Search results for “hypothesis

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28 articles

Neuroscience Theories, Hypothesis and Approaches to ASD Physiopathology. A Review

Aug 2019 DOI 10.14302/issn.2470-5020.jnrt-19-2974
OJ CastejónCorresponding author Instituto de Investigaciones Biológicas “Drs. Orlando Castejón and Haydee Viloria de Castejón” e Instituto de Neurociencias Clínicas, Fundación Castejón, San Rafael Clinical Home. Maracaibo. Venezuela.

According to the results of our laboratory the theory of immune dysfunction, the theory on the genetic architecture of ASD, the disrupted cortical connectivity theory and the theory on the contribution of cerebellum to ASD have shown fundamental experimental evidences to support the core symptoms of the complex and enigmatic physiopathology of autism spectrum disorder. The additional hypothesis about the neurogenesis in the amygdala, the contribution of oxytocin, vasopressin, the mirror neuron network, and mitochondrial dysfunction described are stimulating and interesting approaches that deserve further systematic basic and clinical neuroscience research.

The Pineal Hypothesis for Drug Dependence

Dec 2018 DOI 10.14302/issn.2578-8590.ipj-18-2524
Crespi FrancescoCorresponding author Biology, GSK Verona, Italy

The pineal gland constitutes a major neuroendocrine organ in the brain. By mean of its neurohormone melatonin it transduces exogenous signals such as circadian and seasonal variations of light and temperature into proper hormonal changes which adjust and adapt internal endocrine functions. Alteration of circadian rhythms has been associated with affective disorders, psychosomatic diseases and cancer. It has been observed that light deprivation, which stimulates (the enzymes responsible for) melatonin production in the pineal, enhances the animal's ethanol preference. Similarly, administration of the pineal hormone to rats maintained under normal conditions of constant photoperiod also induced ethanol drinking. Our hypothesis is that in normal conditions melatonin might be acting as a cerebral "pacemaker", sensitive to endogenous as well as exogenous stimuli in the attempt to maintain an equilibrate circadian interaction between the cerebral activities of endogenous aminergic and opiates systems. Abnormal states (i.e. drug abuse) could result in altered pineal activity, then in rhythmically altered functions of cerebral opiates and/or monoamine neurotransmitters. This may led to the development of a “reward - urge for drug rhythm” resulting in craving, ending in addiction.

Raising HLA-E-Restricted HIV-1-Specific Immune Responses Through T Cell Vaccination: A Hypothesis

Jun 2017 DOI 10.14302/issn.2690-4721.ijcm-17-1533
Soon Hoe BSc (Hon) HoCorresponding author Independent Researcher

This essay draws on recent evidences from SIV vaccination studies in rhesus macaques to argue for the potential importance of HIV-1-specific CD8+ T cells restricted by the non-classical major histocompatibility complex, HLA-E, in controlling HIV-1 replication. It then seeks to present a possible method of inducing such responses through the procedure of T cell vaccination using activated autoimmune CD4+ T lymphocytes ‘infected’ with inactivated replication-incompetent structurally intact HIV-1 particles. It is hoped that the argument presented here will interest many of those involved in HIV/AIDS research and others in the general scientific community.

Rescuing Canavan Disease by Redirecting Metabolic Processing: Support for the Astrocyte Hypothesis of Canavan Disease Generation and A Possible Human Cure

Apr 2017 DOI 10.14302/issn.2572-5424.jgm-17-1482
H Baslow MorrisCorresponding author Center for Biomedical Imaging and Neuromodulation, Nathan Kline Institute for Psychiatric Research

Canavan disease (CD) is a globally occurring but rare human spongiform leukodystrophy that is associated with inborn errors affecting the activity of aspartoacylase (ASPA), an enzyme highly expressed in oligodendrocytes that hydrolyzes N-acetylaspartate (NAA). Lack of ASPA activity is associated with the inability of oligodendrocytes to build or maintain axon-enveloping myelin sheaths. The primary source of NAA in brain is neurons, cells that synthesize but cannot catabolize it. Neurons also synthesize N-acetylaspartylglutamate (NAAG) from NAA and glutamate but cannot catabolize this substance as well. For their metabolism, these substances are released to extracellular fluid and are metabolized by oligodendrocyte ASPA and astrocyte NAAG peptidase respectively. A hypothesis developed suggested that the cause of the leukodystrophy component in CD was due to release of NAAG by neurons at white matter nodes of Ranvier, its catabolism by astrocytes forming NAA and increased osmotic-hydrostatic pressure as a result of its buildup at these nodes due to the lack of ASPA activity. In this communication, we provide evidence supporting this hypothesis and comment on the cause and possible cure for human CD.

From Pelvis to Foot: A Functional Approach to Preventing Ankle Sprains in Athletes

Jun 2026 DOI 10.14302/issn.2694-2283.jsem-26-6247
Quintero GabrielCorresponding author

Background Ankle sprains are among the most common injuries in sports, often characterized by high recurrence rates despite appropriate local treatment. Traditional approaches primarily focus on the injured joint, with limited attention to proximal biomechanical factors that may predispose athletes to injury. Objective To propose a functional, longitudinal kinetic chain model in which sacroiliac joint dysfunction may act as a predisposing factor for ankle sprain/strain injuries in athletes. Methods This paper presents a clinical hypothesis based on biomechanical reasoning and observational findings. The proposed model describes how sacroiliac joint dysfunction, particularly posterior innominate rotation (PI), may lead to pelvic obliquity and functional leg length discrepancy. These changes may induce compensatory femoral external rotation and foot toe-out, altering ground contact mechanics during gait and running. Results (Hypothesis) The altered alignment and loading pattern may increase the vertical impact force and modify the ground reaction vector on the functionally shorter limb, resulting in reduced mechanical stability at the ankle during heel strike or foot contact. Over time, this may increase susceptibility to inversion or eversion injuries, manifesting clinically as recurrent sprain/strain. Conclusion Ankle sprains in athletes may, in some cases, represent the distal expression of a proximal biomechanical imbalance. Incorporating assessment of the sacroiliac joint and the longitudinal kinetic chain into routine clinical evaluation may improve injury risk identification and contribute to more effective prevention strategies. Further research is needed to investigate this proposed relationship.

Traumatic Maculopathy (Berlin´S Edema) Treated with Enhancement of Human Photosynthesis®

Nov 2025 DOI 10.14302/issn.2474-7785.jarh-25-5760
Solís Herrera ArturoCorresponding author

Commotio retinae (CR) is a condition frequently observed in clinical practice, particularly following closed globe trauma (CGT) due to sport, labor, or traffic accident injuries. It is the main cause of unilateral vision loss in male patients aged between. It is characterized by transient gray-white retinal coloration and reduction of visual acuity (VA). Symptoms depend mainly on the location and severity (deep) of the injury, with less complains when only the superficial or peripheral retina is affected. It may be confined to the posterior pole, when it is also called Berlin’s edema, after the first hypothesis of Berlin (1873). There is no specific treatment since the treatment depends on the region of the retina and choroid affected. In this work we report a case of Berlin edema, treated with ǪIAPI 1®, to restore the balance of oxygen, which is generated at the intracellular level.

Peripheral Third Cranial Nerve Palsy in A Patient With Pediatric Form of Multiple Sclerosis

Jun 2024
Rahbani AbdallahCorresponding author

Multiple Sclerosis has traditionally been considered an inflammatory and autoimmune disease of the central nervous system. However, peripheral cranial nerve involvement has been described previously in eight cases, raising the hypothesis of a disease spectrum between central and peripheral nervous system. We hereby present a case of a 12 years old girl diagnosed with Multiple Sclerosis who presents with complete unilateral third cranial nerve palsy. Complete clinical, laboratory and radiological work-up was consistent with demyelinating disease. We conclude that demyelination in Multiple Sclerosis can affect in some cases both the central and peripheral nervous system.

The Sweet and Sour of the Sugar-Sweetened Beverage Tax

Apr 2021 DOI 10.14302/issn.2379-7835.ijn-21-3780
Khamis Al-AlawyCorresponding author Mohammad Bin Rashid School of Government, Dubai, UAE

Obesity is a common and preventable Non-Communicable Disease that is of great importance. Population-based interventions are recognised to have a profound effect on improving health outcomes. One of these approaches includes the adoption of the Sugar-Sweetened Beverage (SSB) Tax. Objectives There were three objectives, 1) explore the associations between gender, age, nationality, and change in SSB consumption, 2) explore SSB consumption during Covid-19 lockdown, and 3) inform policy decision making. Methods A cross-sectional survey in the United Arab Emirates. We performed descriptive analysis and chi-square for independence to test the difference between the expected and the observed frequencies in one or more categories. Results Since the introduction of SSB tax, change in SSB consumption by gender, age or nationality was not statistically significant. Further analysis of the proportion of sugar intake per day was statistically significant (P-value <0.001) by nationality. There was no statistically significant change in SSB consumption by age, gender, or nationality during the Covid-19 lockdown. Further analysis within the group that reported change in SSB consumption suggests a majority (80.5%) reported a reduction in SSB consumption. Conclusions Change in SSB consumption by gender, age or nationality was not statistically significant since the introduction of SSB tax, or during Covid-19 lock-down; thus, we accept the Null Hypothesis. Imposing a levy on frequently consumed SSB or revisiting levy by the gram, volume, or type of added sugar (or in combination) may prove to be more effective in reducing SSB consumption. Further research is needed to determine the extent other demographic factors influence SSB consumption as well as the enablers and barriers associated with SSB consumption. 

The Role of Health on Economic Development.

Dec 2020 DOI 10.14302/issn.2997-1969.ijhs-20-3658
Assan JallowCorresponding author PhD student at the rome school of Economics Italy

In this project the main aim is to investigate the role of health on economic development. In doing so my inspiration was derive for the augmented neoclassical theoretical firm work base on the hypothesis that health has a positive impact on economic growth, looking at specification 1 and 4 are basic linear regression model which are used to capture the liner relationship between health and economic development. And looking at the graphs from our “appendix” we will observe a strong positive correlation between the variables. We also used life expectancy as a proxy for health which was positive and significant across all specification, which affirms that’s health have a positive and significant impact on economic growth as well as output per capita. For specification 3 and 6, we ran a “flexmix” which gives a reflection of a conclusion that our data most not be “cluster”, this is also supported by the pair wise plot which actually shows no meaningful cluster at a visual inspection.

Agronomy Research Open Access

UV rays Decrease Foliar pH in Cress (Lepidium Sativum) and Modify NIR Spectrum

Dec 2020 DOI 10.14302/issn.2639-3166.jar-20-3639
Masoero GiorgioCorresponding author Accademia di Agricoltura di Torino, Via A. Doria 10, 10123 Torino (Italy).

An experiment on watercress (Lepidium sativum) 42 d days after sowing was set up to evaluate the effect of UVAB radiation on foliar pH and on NIR tomoscopy. The effect of 8 h of UV exposure (about 500 µWcm-2) was clear, causing a reduction in the foliar pH of 6.0%, compared to the contemporary control group (5.22 vs. 5.56). When the treated leaves were returned to white light, their pH rose by 1.7% (5.31), reaching the same level as leaves grown outdoors (5.33). On the basis of the NIR spectra, the leaves of the plants grown outdoors were recognized 100%, that is, more than the control leaves (87%) and the plants treated with UV on the day of measurement (81%). However, the effect of the UV marking on the leaves is not permanent as, after the UV treatment, the leaves returned to white light were classified at 61%, which is a greater value than the 37% of overlapping between the two groups. The foliar pH was highly correlated with the NIR spectra, with R2 0.43. These results corroborate the hypothesis of the influence of the solar cycle on the variation of the pH of leaves in plants, which we believe may have played a major role in past agricultural pandemics. These results call for the introduction of the pH test for the evaluation of resistance to pathogens. From the environmental point of view, the foliar pH could be enlisted as an in vivo long-time indicator of the response of plants to climate changes.

A Case Report on Challenging Management of Multiple Neoplasms in Elderly

Dec 2020 DOI 10.14302/issn.2474-7785.jarh-20-3628
Syiao Wei NgCorresponding author Hospital Sultanah Aminah, Jalan Persiaran Abu Bakar Sultan, 80100 Johor Bahru, Johor, Malaysia

Multiple primary malignancies especially in the head and neck region is no longer a rare occurrence and the prevalence is increasing. They were described as synchronous when the malignancies present within 6 months of another or metachronous tumors if the subsequent malignancy presents 6 months later. Many etiologies had been hypothesised including similar carcinogens exposure, genetic susceptibility and mutation, immunodeficiency or treatment of the index tumor. Among the hypotheses, the most accepted theory was field cancerisation in which the occurrence of multiple primaries in the aerodigestive tract was due to persistent exposure of similar carcinogens through inhalation or oral intake . However the co-incidence of thyroid and aerodigestive malignancies is relatively low. Hereby we would like to report a case of a 74 years old lady with known esophageal squamous cell carcinoma presented with metachronous laryngeal squamous cell carcinoma and papillary micro carcinoma of thyroid.

Perceived Effect of Knowledge Level and Socio-Demographics on COVID-19 Risk Exposure: the Africa Experience

Nov 2020 DOI 10.14302/issn.2692-1537.ijcv-20-3620
Obioma AzuonwuCorresponding author Department of Medical Laboratory Science, Medical Bacteriology / Virology / Parasitology Unit, Rivers State University, Nkpolu – Oroworukwo, Port Harcourt, Rivers State, Nigeria.

COVID-19 remains a global public health emergency till date. It is eminent that the transmission of the disease is subjective to people’s readiness to implement public health preventative strategies and these are often related to knowledge. Proper public knowledge about COVID-19 plus its predisposing factors is critical to effectively manage the increasing public health risks. However, socio-demographics have been implicated to COVID-19 infection risk and management outcome. Thus, this present study examined the influence of knowledge on COVID-19 risk outcome, the contribution of socio-demographics on the risk of COVID-19 and predicted synergistic effects of knowledge and socio-demographics on the risk of COVID-19. All measured was strictly perception amongst African sampled with an online Google form as the primary data source. The Correlation designed used Zr Statistics of Fisher Transformation to determine the differences between the two correlation coefficients of the prediction variables after an initial test using Pearson Product Moment Correlation between COVID-19 risk and Knowledge plus socio-demographic. The hypothesis was tested using Statistical Package for Social Science version 21 and iStat at varying significant levels of 0.05 and 0.01 respectively. Generally, a significant relationship exists between COVID-19 risk and knowledge level but not with composite socio-demographics. However, specific significant relationship (p<0.05) was noticed between COVID-19 risk and age (r=0.220) as well as marital status (r=-0.158). Educational level, location, and sex showed no correlation (p>0.05) with COVID-19 exposure. Also, the proposition of no significant difference between correlation coefficients of socio-demographics and knowledge was proven otherwise (p<0.05). The regression model (R2=0.420 and adjusted R2=0.404, df=2, 336, F-value=27.012. p=0.00) significantly predicted the synergic contributions of knowledge level and socio-demographics to COVID-19 exposure. 40.04% of the COVID-19 risk exposure can be explained by socio-demographics and knowledge about COVID-19. Synergic contribution of knowledge and socio-demographics proved risk prediction to COVID-19. Traditional factor like age should be decidedly considered and attention should be drawn towards good knowledge about COVID-19 especially its signs and symptoms plus transmission.

Animals in the COVID-19 Era: Between Being a source, Victims, or Maybe our Hope to Overcome it!

Sep 2020 DOI 10.14302/issn.2692-1537.ijcv-20-3481
Gupta ShilpiCorresponding author Division of Molecular Genetics & Biochemistry Lab, National Institute of Cancer Prevention and Research (NICPR), I-7, Sector-39, Noida, India.

The indirect misuse of animals usually correlated to catastrophic consequences like the one we are facing now, novel coronavirus disease-19. However, the source of infection is not fully confirmed yet. But the finger of blame points to bats and pangolins. Hence, understanding and raising awareness about wild animals and the consequences of their misuse are a must to avoid future pandemics. Herein, we threw light on the most animals involved in the current epidemic as well as possible animals in the shadow. Random serological investigations of samples from animals of different species (including asymptomatic animals) are required to understand the prevalence and severity of the infection, the extent of the transmission, and the monitoring of the situation over time. Moreover, alleviating fear associated with the possibility of human infection from their pets, we highlight that there are no reports that confirm this hypothesis; however, the opposite has been reported. Similarly, there is no proof that pigs can become infected amplify or spread novel coronavirus.

DNA And RNA Research Open Access

Molecular Study of Hepcidin HAMP (-582A/G) Gene Polymorphisms and Measurement of Serum Hepcidin Level among Sudanese Patients with Anemia of Chronic Kidney Disease

May 2020 DOI 10.14302/issn.2575-7881.jdrr-20-3343
Hussen Abdelrhman AmgedCorresponding author Assis Professor, Department of Hematology and Immunohematology, Omdurman Islamic university / Sudan

Background Anemia of chronic disease is anemia found in certain chronic disease states, is typically marked by the disturbance of iron homeostasis or hypoferremia. Chronic renal failure is currently known as Chronic Kidney Disease (CKD) or Chronic Renal Insufficiency (CRI) implies long-standing, progressive and irreversible renal parenchyma disease resulting in diminished renal function up to 40 to 60%. Often, chronic kidney disease is diagnosed as a result of screening of people known to be at risk of kidney problems, such as those with high blood pressure or diabetes and those with a blood relative with chronic kidney disease. This disease may also be identified when it leads to one of its recognized complications such as cardiovascular disease, anemia, or pericarditis.                             Methods Sysmex kx21 used to CBC and the Cobase411 used to iron profile. Enzyme-Linked immunoassay (ELISA) was used to determine the level of serum hepcidin.  Sample preparation and PCR detection of HAMP DNA Polymorphisms: Restriction digestion of PCR products was done using Fast Digest. (Figure 1).                                                                                         Results Serum hepcidin levels higher in patients with anemia of chronic kidney disease compared with healthy controls mean. The polymorphisms of the hepcidin gene promoter in Sudanese patients with ACKD showed that the hepcidin HAMP AA genotype 70, AG 23, and GG 7 in 100 patients dialysis-dependent and AA 83, AG 17 and GG 0, and the allele A are more frequent in patients affected by ACKD. Significant statistical association observed between the hepcidin level and end-stage kidney disease. Conclusion This study evaluates for the first time the association between anemia of chronic kidney disease and hepcidin genes promoter polymorphisms and show that the hepcidin HAMP AA genotype and the allele A are more frequent in patients affected by ACKD, further investigation is needed, our data support the hypothesis and hepcidin HAMP are important in the pathophysiology of ACKD.

Skeletal Muscle Open Access

The Mechanism of Decline of Senescent Skeletal Muscle Satellite Cell Self-Renewal and Regenerative Proliferation: The Role of Heparan Sulfate-FGF-2--FGFR1-p38αMAPK Axis, Sprouty1, miR-1, miR-133 and miR-29a

Apr 2020 DOI 10.14302/issn.2832-4048.jsm-20-3211
Papaconstantinou JohnCorresponding author The Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston Texas 77555-0643

Aging mammalian skeletal muscle satellite cells (MuSCs) undergo a decline of stem cell/progenitor cell proliferative and regenerative capacity, and the development of a physiological milieu characteristic of a state of chronic sterile inflammation. p38αMAPK and ERK1/2 are two major signaling pathways that regulate the age-associated decline of MuSC proliferative capacity. In this review we propose the following mechanism that links the p38αMAPK pathway to the decline of self-renewal and regenerative capacity of aged MuSCs: a) the HS-FGF-2-FGFR1-p38αMAPK-Axis, a tightly linked homeostatic signaling complex, is in synchrony with the autoinhibition of FGFR1; b) autoinhibition contributes to the Axis’ regulation of the homeostasis of P-p38αMAPK activity in juvenile MuSC; c) this combination of protein-protein interactions is characteristic of a juvenile cytoplasmic milieu of beneficial P-p38αMAPK activity and d) includes Sprouty1 inhibition that supports the stimulation of FGF-2 --> miR-29a; e) the miR29a dismantles the basement membrane in preparation for the initiation of replication; f) an age-associated impaired, dysregulated, over-sulfated heparan sulfate ligand (HS)-FGF-2 fails to activate FGFR1 in aged MuSCs; g) this uncouples its regulation of p38αMAPK and ERK1/2 pathways and results in desensitization of FGFR1; h) desensitization of FGFR1 and Sprouty1 interaction in aged MuSC uncouples their regulation of P-p38αMAPK in the aged MuSCs; i) this enables a state of chronic sterile inflammation to promote and sustain an increased level of P-p38αMAPK activity; and, j) the increased activity of P-p38αMAPK in aged MuSC stimulates the production of cell cycle inhibitors, miR-1 and miR-133, thereby attenuating the expression of the cell cycle regulators, SP1 and cyclin D1, resulting in a G1/S arrest; j) the increased level of p38αMAPK activity promotes the apoptosis of the aged activated MuSCs. This mechanism involves the synergistic interactions of HS-FGF2-FGFR-1, Sprouty (spry1), miR-1, miR-133 and miR-29a that unify the extracellular niche and intracellular milieu for the juvenile vs age-associated regulation of proliferative capacity of the MuSC. Our hypothesis unifies these interactions with the role of the extracellular niche and intracellular milieu in the stimulation of juvenile proliferation vs age-associated decline of skeletal muscle satellite cell self-renewal and regenerative proliferation. Word Count = 344

Veterinary Healthcare Open Access

Evaluation of cardiorespiratory parameters in dogs undergoing laparoscopic versus open gonadectomy with spontaneous ventilation anaesthesia: a pilot study

Mar 2020 DOI 10.14302/issn.2575-1212.jvhc-20-3256
di Virgilio FabrizioCorresponding author DVM, Clinique Vétérinaire Vet24 – 59700 – Marcq en Baroeul, France

This pilot study aims to compare cardiorespiratory parameters in female dogs that underwent either laparoscopic or open elective gonadectomy with spontaneous ventilation anaesthesia. Records of 77 client-owned female dogs were reviewed. Patients were divided into two groups: laparoscopic surgery (L group, n 47) and open abdominal surgery (O group, n 30). The end-tidal carbon dioxide, respiratory rate, oxygen saturation, heart rate, non-invasive arterial blood pressure and length of procedure were recorded and statistically evaluated. Once normality of the sample data has been assessed, equality between the groups was analysed with two-sample Student’s or Welch’s t-test, whether the hypothesis of variance equality, through an F-test, was verified or not. A value of p <0.05 was considered statistically significant. No statistically significant difference was found between groups regarding the end-tidal carbon dioxide, oxygen saturation, respiratory rate, heart rate, systolic and medium arterial pressure values. Mean diastolic pressure was lower in the L group. The procedure length between the two groups was statistically different: laparoscopy was shorter than open surgery. In spontaneously ventilating female dogs, the cardiorespiratory parameters evaluated seem not to be affected by the presence of pneumoperitoneum when intrabdominal pressure is kept between 8 and 10 mmHg. The pilot nature of the study and the shorter laparoscopic surgery length could bias these results. However, in the author’s opinion, these findings confirm the interest of laparoscopy and the small impact of this mini-invasive technique in healthy patients.

Abelmoschus Esculentus (Moench.) Seed Derived Flavonoids Antioxidant Protect the Heart Against Experimental Oxidative Injury

Mar 2020 DOI 10.14302/issn.2577-2279.ijha-20-3215
O. Atinuke AnjorinCorresponding author Department of Anatomy and Cell Biology

Since oxidative stress impairs the cardiovascular function, the hypothesis from the present study is that the treatment of paraquat-exposed adult Wistar rats with methanolic extract of Abelmoschus esculentusseed would reduce paraquat-induced cardiovascular damage. Thirty healthy female Wistar rats weighing 120-150 g were randomly assigned into 6 groups of 5 rats each (Groups A, B, C, D, E and F). Rats in groups A served as control and received normal saline while groups B, C, D, E and F received a single dose of paraquat (7mgkg-1i.p.). Rats in group B was sacrificed 24hours following paraquat administration while daily administration of 100 mg kg-1and 200 mg kg-1 of methanolic extract of Abelmoschus esculentusseed extract were given orally to groups C and D while group E received daily oral dose of Vitamin E at 100mgkg-1 and group F was left untreated. Histological and biochemical preparations of the heart was made and data were expressed as mean± SEM. Significant difference was set at p<0.05. Results showed no significance difference (p<0.05) in nitric oxide activity, Glutathione reductase activity, and troponin I activity across the paraquat-exposed groups when compared with control. Histological studies reveal distortion of normal cardiac histo-architecture in paraquat-exposed group B compared with control rats while Abelmoschus esculentus reversed these changes in other treated groups. The study concluded that paraquat caused significant distortion of the cardiac histo-architecture and methanolic extract of immature Abelmoschus esculentus seed had antioxidant and ameliorative effects similar to Vitamin E on paraquat-induced myocardial injury.  

Agronomy Research Open Access

Sunspots are Correlated with Foliar pH in Grapevines

Dec 2019 DOI 10.14302/issn.2639-3166.jar-19-3116
Masoero GiorgioCorresponding author Accademia di Agricoltura di Torino, Italy

Foliar pH is a specific multifaceted parameter that is sensitive to a deficit in soil water and to temperature variations. It also represents a tool that can be used to rapidly phenotype the symbiosis induced in several crops by bio-fertilizers containing Arbuscular Mycorrhizal Fungi. Yearly decreases in foliar pH, which dropped from 3.73 in 2015 to 3.15 in 2017 and then stabilized at around 3.13, have been observed in an experimental vineyard near Torino (Italy) in six grapevine cultivars. In this paper, these curious, original results have been paired with the average sunspots of the 24th sun cycle, proximal to its endpoint. The paired values were highly correlated (r 0.95 P< 0.01), with close parabolic patterns. A lowering in foliar pH has been correlated with a modification of the leaf composition, as characterized by the higher hydration and reinforced wall. An increase in the circulating acidity of the plants has been hypothesized to interfere in a diminution in the general predisposition to block parasite attacks. From this perspective, the retrieval of several historic outbreaks and the long-term systematic monitoring of mud and Erwinia amylovora frequencies have suggested that the hypothesis that links the solar minima with dysfunctions of the plant-pest relationships cannot always be rejected. Cosmic influences pertaining to UV variations are poorly understood in plant physiopathology. Foliar pH appears to be a rapid and simple tool to unveil high-level mechanisms. It is this simple parameter that physiologists and geneticists, but also agronomists, are asked to consider.

A Comparative Study of the Impact of Himalayan Singing Bowls and Supine Silence on Stress Index and Heart Rate Variability

Oct 2019 DOI 10.14302/issn.2474-9273.jbtm-19-3027
Y Trivedi GunjanCorresponding author Research Scholar, JJT University, Rajasthan, India and Co-founder, Society for Energy & Emotions, Wellness Space, Ahmedabad, Gujarat, India,

Introduction Sound vibrations have a profound impact on the body and the mind with evidence confirming reduced anxiety and increased wellbeing. The likely reason for driving the benefit is relaxation. The Himalayan Singing Bowls, used for therapeutic intervention to enhance the individual’s emotional & physical wellbeing, may facilitate faster and deeper relaxation as compared to simple, supine relaxation. Aim of the Study The study aimed to validate the hypothesis that short 20 minutes sessions to relax with the help of the Himalayan Singing Bowl (HSB) could provide better depth of relaxation as compared to Supine Silence (SS) based on the objective assessment of physiology parameters i.e. Stress Index & Heart Rate Variability (HRV).  Methods Seven metal Himalayan singing bowls were used in a particular sequence learned from an expert teacher for 16 subjects. The SS group consisted of 17 subjects. The HRV data was measured by the Emwave Pro device and analyzed using Kubios HRV Premium software. The analysis compared key HRV parameters within and between the groups. Result Overall, as expected, both groups achieved relaxation as measured by changes in HRV parameters. However, further analysis confirmed a more consistent relaxation, as measured by a statistically significant reduction in stress index and an increase in HRV, for HSB group. The HSB group achieved more consistent depth of relaxation during each subsequent 5 minutes interval throughout the session as compared to SS group.  Conclusion The study confirms that singing bowls sessions can be leveraged as a tool for inducing good quality relaxation response (increased parasympathetic tone, reduced stress) to facilitate healing and energy recovery in just 20 minutes and achieve significant health benefits. More comprehensive studies must be conducted to further evaluate the findings with more sample size, different methods of relaxation and varied demographics.

Hip Angle Behavior in Landing After Drop Jump in Children; and their Implicance in Prevention Programs

Jul 2019 DOI 10.14302/issn.2694-2283.jsem-19-2949
Hinzpeter JaimeCorresponding author Department of Orthopaedic Surgery, Clinical Hospital, University of Chile, Santos Dumontt # 999, Independencia, Zip Code: 8380456, Santiago, Chile.

Background The Anterior Cruciate Ligament (ACL) injury is uncommon, but constitutes an important percentage of the lesions requiring more than 8 weeks of recovery in sports. Most ACL injuries do not require external contact and are associated with biomechanical risk factors that stress this ligament ACL: like an increase in knee valgus angle (KV) and hip flexion (HF) and a decreased in knee flexion (KF). The ACL requires muscle cooperation to resist the load; however, when there is fatigue, the protective capacity of the musculature would decrease. The objective of the study is to analyze the angular behavior before and after a physical load for HF in children of 14-15 years old. Hypothesis The physical load applied in a single training session is enough to change some biomechanical risk factors of ACL injury. Study Design Experimental study Level of Evidence 2b Methods The sample consisted of 50 students from different soccer schools between 14-15 years old. We analyzed the hip angular behavior of hip flexion before and after a training session. The angles where obtained from inertioal sensor while the students performed a Drop Jump test from a 30 centimeters drawer. Results Statistically significant differences were found in the differences between pre physical load HF / post-load HF (p = 0.00053), right pre physical load HF / right post- load HF (p = 0.0086) and left post- load (p = 0.0248206). Conclusions It was concluded that the angular behavior of HF increases significantly in both post-training limbs, after performing a physical load. Clinical Relevance This study analyzed the importance of using prevention injury programs since early stages, and give importance to the eccentric role of hamstring, gluteus and core exercises.

Women’s Empowerment and the Integration of Traditional Maternal and Child Healthcare with National Health Systems in the Republic of Guinea.

Feb 2019 DOI 10.14302/issn.2641-4538.jphi-19-2589
Ahmadou Diallo AlphaCorresponding author Ministry of Health

Several studies show that policies to improve maternal and infant health must be contextualised within broader questions and commitments concerning women’s empowerment. There are, however, two-way linkages between women’s empowerment and reproductive services. Certain institutional approaches that support women’s reproductive health can themselves be experienced as empowering whereas others, however well-meaning, can be experienced as disempowering, undermining health and broader goals. It is thus important to discern and support those elements of reproductive services that might have empowerment outcomes, and to avoid others that undermine them. This paper is premised on the hypothesis that approaches to reproductive health that are rooted in women’s life worlds, that support women’s social networks and which enhance women’s confidence and control will have very different empowerment effect from those that subordinate women and their networks to external expertise and (often male) authority and undermine women’s preferences or autonomy. We (a) conduct an audit of positive practices concerning maternal and child health and (b) examine how current support to maternal and infant health articulates with this. Analysis seeks to reposition indigenous knowledge, community wisdom and their secular practices in a way that promotes better health provision that is integrated with these existing practices and that is empowering.

Treatment of a Severe Pediatric Lyell Syndrome with Amniotic Membrane: Case Report and Histological Findings

Dec 2018 DOI 10.14302/issn.2640-6403.jtrr-18-2442
Pontini A.Corresponding author Department of Neuroscience Specialties, Plastic Reconstructive Surgery and Burn Unit – Padova University Hospital

Background: Lyell Syndrome (TEN, Toxic epidermal necrolysis) represents a medical emergency particularly in pediatric patients in whom the massive skin damage can quickly lead to multi-organ dysfunction and death. Prompt restoration of the physiologic mucosal/cutaneous barrier is mandatory. The use of amniotic membranes has been described in the treatment of ophthalmic Lyell Syndrome, but its use has not yet been adopted for the management of larger cutaneous wounds. Study Hypothesis: Here we report the use of amniotic membranes in a pediatric case of severe Lyell Syndrome with complete skin surface, ocular and mucosal involvement with life threating presentation. Methods: A 7-year old female was admitted to our Burn Centre for severe cutaneous/mucosal exfoliation (100% Total body surface area, TBSA) as a result of an adverse reaction to ibuprofen administration. Supportive fluid administration, cardiac-pulmonary assistance and pain management were complemented by serial grafting of amniotic membranes on all affected areas to provide coverage of the exfoliated skin/mucosa. Biopsies were obtained to monitor histological skin changes. Results: The patient showed an excellent response to amniotic membrane treatment, with rapid restoration of mucosal and cutaneous layers in the grafted areas. This resulted in a decreased need for dressing changes, avoidance of additional surgeries and a reduced dependence on supportive therapy. Lower pain levels than usually expected led to a reduced need for narcotic pain medications and allowed for early physical rehabilitation and a short hospital stay. Histology confirmed evidence of topical immune-modulation in treated areas (reduction of inflammatory infiltrate). Conclusion: As we tested in numerously TEN and burn pediatric injuries Amniotic membranes with their regenerative and immune-modulatory effects may represent an life saving treatment even in the worst cases of pediatric Lyell syndrome.

Effect of 8 Weeks Exercise on Irisin in Obese Women

Oct 2017 DOI 10.14302/issn.2381-862X.jwrh-17-1750
Niknam ZahraCorresponding author PhD candidate of Exercise Physiology, University of Tabriz

Background The prevalence of obesity and type 2 diabetes is escalating at an alarming rate in many developed as well as developing countries. Irisin is a novel muscle and adipose drived chemokine that is, proteolytically processed from the product of the FNDC5 (fibronectin type ш domain containing 5) gene. The purpose of this study is to examine the effect of three kind of training on irisin in sedentary obese women. METHODSː33 obese women (medium age: 37.99 ± 3.7 year, height: 1.55 ± 0.03 meter, BMI: 34.6 ± 5.07 kg/m2) participated in the study, on three groups, including endurance, resistance and concurrent. Results After 8 weeks exercise we did not find significant differences in fasting glucose, insulin, HOMA-IR and irisin between the groups (P>0.05), but glucose and insulin in resistance groups and irisin in all groups had significant changes (P<0.05). Conclusions In summery in this study in contrast to hypothesis there were no difference between groups of training. It can be hypothesise that the increase of irisin in obese people is one of the preventing ways against of obesity's side effects. Exercise could improve the signaling pathways and consume the fat accumulations, therefore at the end of exercise duration, irisin decreased.

Autism Spectrum Disorders and Gluten/Casein Free Diet Treatment: A Systematic Review (1990-2016)

Aug 2017 DOI 10.14302/issn.2379-7835.ijn-17-1710
Çöpür MazlumCorresponding author Associate Professor in Child and Adolescence Psychiatry. Arel University Faculty of Science and Letters Department of Psychology

Background: High number of patients suffering from autism spectrum disorders utilize dietary intervention methods, especially gluten-free/casein-free diet. In contrast with its’ extensive usage no sufficient and consistent data exist to support its’ efficiency and safety. Objective: The main aim of this systematic review is to provide a general look to the efficiency and safety of gluten-free/casein-free diet treatment for autism spectrum disorders. Method: Studies used in this systematic review are gathered from 3 online databases (PubMed, Embase and the Cochrane Library). Inclusion criteria are established for study selection. Articles published in a peer-reviewed article between 1990 and 2016 in English about our topic of interest and conducted with patients under the age of eighteen (18) are selected and further analyzed (“Level of Evidence” and “Grade of Recommendation” criteria are utilized). Results: Even though some studies with high values of “Level of Evidence” claim that gluten-free/casein-free diet is beneficial for patients suffering from autism spectrum disorders, studies with lower risk of bias demonstrate otherwise. Since studies such as case reports and cohort studies may contain bias associated with small sample size, absence of clear assessment methods, lack of randomization and short treatment period we suggest that there is no sufficient data to support gluten-free/casein-free diet treatment. Conclusion: Due to controversial outcomes from studies that have different “Level of Evidence” we speculate that efficiency of gluten-free/casein-free diet might be related to individual genetic differences. Therefore, studies conducted with large study groups could not provide statistically significant data to support this treatment option. Further studies should be conducted, especially in the field of genetics, in order to test our hypothesis.

Analyzing Students’ Opinions about their Learning Environments and Study Approaches with Bayesian Modeling

Jul 2017 DOI 10.14302/issn.2574-612X.ijpr-17-1543
Kuikka LiisaCorresponding author Clinical teacher, University of Helsinki, Department of General Practice , Finland

Our own long term experiences as clinical teachers among undergraduate medical students have generated the interest to investigate the plausible connection between students’ study orientation and their learning experiences in small groups.The objective of the study was to assess the hypothesis whether learning in small groups may contribute to study motivation. Participants were 52 undergraduate medical students (10-12 in each group) in the primary health care course between 1st and 5th year during the spring term 2012. The questionnaires used were the Inventory of General studies (IGSO) for study orientation and IQ questionnaire for group learning. The data were analyzed by Bayesian network modeling. In this study, the application used was the Bayminer (www.BayMiner.com) non-linear visualization modeling software. Positive atmosphere in a small group increases study motivation and commitment and predicts mutual trust and gives space to new ideas, where contradictive views can raise interesting discussions. Based on Bayesian modeling it seems that the experience of motivational problems in the present studies may be an indicator of study alienation and connected with the perception of small group dysfunctionality.

Frailty and the Immune System

Jun 2017 DOI 10.14302/issn.2474-7785.jarh-17-1578
Wilson DaisyCorresponding author Institute of Ageing and Inflammation, University of Birmingham, Edgbaston, Birmingham, UK, B15 2GW

Frailty describes a medical syndrome that confers increased vulnerability to disproportionate changes in health status following minor stressors. With loss of homeostatic reserve in multiple physiological systems, frailty conveys an increased risk of adverse health outcomes. Despite the lack of a clear universal definition, the utilisation of two landmark operational models has allowed a rapid expansion in frailty-centred research. The pathophysiology of frailty is yet to be elucidated in the literature, but a critical role for a heightened inflammatory state is hypothesised. Raised levels of pro-inflammatory cytokines are associated with frailty, with emerging evidence relating their biochemical action with development of the frailty phenotype. Dysregulation of both the innate and adaptive immune system are key components of the frailty syndrome. Remodelling of the T cell compartment and upregulated inflammatory pathways are theorised to propagate the heightened inflammatory state critical in the frailty syndrome. Increased neutrophil counts, in conjunction with ineffective neutrophil migration associated with age, is theorised to produce tissue damage and secondary inflammation conducive of the inflammatory picture in frailty. Beyond the gold standard of the comprehensive geriatric assessment, management of frailty is a fast-evolving area of research. Exercise interventions have shown promising results, improving functional ability and showing beneficial immunomodulation. Vitamin D supplementation, with proposed anti-inflammatory effects, nutritional support and pharmacological treatments all provide promising areas for future therapeutic intervention.

A Checklist Instrument: Sensory Cues within Assisted Living Facilities

Apr 2017 DOI 10.14302/issn.2474-3585.jpmc-16-1213
Wood-Nartker JeanneaneCorresponding author Department of Human Environmental Studies, Central Michigan University

As people age, environments supporting changing needs can potentially impact their quality of life. The purpose of this exploratory study was to develop and assess the validity of a checklist instrument used to evaluate senior-supportive environmental risk factors within assisted living facilities (ALFs). Aging often leads to a decrease in the ability of a person to interpret sensory cues within his or her environment. This checklist instrument examined the relationship between sensory cue frequency and the influence on fall incidence within ALFs to maximize safety and quality of life. Observers visited 140 ALFs, utilizing the checklist instrument to document the presence or non-presence of 110 sensory cues. Contrary to the original hypothesis, a positive correlation was found between sensory cues and reported falls in each space. As the number of cues increased, the number of falls also increased. Additionally, the frequency of sensory cues within each room increased as facility size increased. Lastly, data revealed that more sensory cues were present in ALFs designed or renovated by design professionals. Although the results were contrary to expectations, the checklist instrument demonstrated face and predictive validity as a future research tool.

Phytochemicals May Arrest HIV-1 Progression

Jan 2014 DOI 10.14302/issn.2324-7339.jcrhap-13-edt.1.3
Sharma B.Corresponding author Department of Biochemistry, Faculty of Science,

This hypothesis‑driven review considers phytochemicals with putative anti‑HIV activity. It summarizes proposed mechanisms, in vitro evidence, and formulation issues, and calls for standardized assays and clinical trials to determine real‑world efficacy and safety.

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