Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

The objective of the research was to analyze the use of mobile learning and technologies based on it as a training tool in the university educational process; and propose uses and applications of m-learning. The study methodology performed descriptive and inferential statistical analysis of the application of a survey applied to 74 university students from four universities (public and private) on the use of mobile devices. The results show that university students use mobile devices for leisure and recreation activities rather than for learning and knowledge. It is concluded that the relative majority of those surveyed are not used to using mobile devices on a daily basis as a learning tool or to search for information.

In different parts of the world, analyses were made on covid-19 positive cases, reaching the conclusion that the percentage of infected men is higher than that of infected women. Cases from 9 years of age to 90 years of age or older were taken into account. Cases studied by covid were taken into account people suffering from other diseases.   ACE2 is the angiotensin-converting enzyme 2, which also acts as a receptor for SARS-CoV 2. This enzyme has a positive correlation with estrogen, this hormone increases the release of acids allowing resistance to this virus. Estrogen was also found to help promote the release of immunoglobulin G and immunoglobulin M. Estrogen also helps release nitric oxide which will help suppress virus replication and acts as a vasodilator, which decreases cardiovascular risk. On the other hand, androgens inhibit the release of immunoglobulin G and immunoglobulin M. This male hormone also has the ability to positively regulate the transcription of transmembrane serine protease 2 which induces the fusion of viral and cell membrane, which is why the virus affects men more severely than women.

Objetive: Evaluate the quality of doctoral theses at the Faculty of Medicine of the Universidad Nacional Mayor de San Marcos. Methods: Descriptive study, which consisted of the review of 114 theses on health topics in all four doctoral programs - Medicine, Nursing, Health Sciences and Neurosciences - from the creation of the first doctoral program in 1999, until 2020. Four quality indicators were used: scientific problem, sample, analysis (comparability) and conclusions, as well as other complementary indicators to evaluate the writing of the thesis and its social relevance, categorizing them into excellent, acceptable and not acceptable. Results: With the quality indicators there were 32 excellent theses (28.1%), 34 (29.8%) acceptable, and 48 (42.1%) not acceptable. On the other hand, 63 theses (55.2%) had good syntax (acceptable) and in 5 (3.4%) did not make good use of scientific terminology (not acceptable). 17.0% of the theses had both indicators - methodological and writing - of good quality. Conclusion: The doctoral theses evaluated were methodologically acceptable for the most part, with the health sciences theses achieving the best results with the methodological indicators. From the point of view of social impact, most of the theses had social relevance.

Passiflora edulis (passion fruit) is a plant whose fruit has a high biological value as it contains a large amount of polyphenols, the most important of which are flavonoids that act as powerful antioxidants against cancer and cardiovascular diseases. Recent studies have highlighted its antihypertensive role, even comparing it to hypotensive drugs. Arterial hypertension is one of the diseases that causes the greatest mortality and the most widespread worldwide. It is caused by endothelial dysfunction between vascular constrictor and relaxant factors, as a result of oxidative stress caused by the overproduction of reactive oxygen species. Flavonoids reduce the formation of free radicals by inhibiting NADPH oxidase; they also increase the activity of nitric oxide synthase (eNOS), increasing the vasodilation promoted by nitric oxide and providing a response capacity to endothelial damage by increasing intracellular calcium, which further stimulates vasodilation. They also exert a diuretic action and significantly increase urine flow, glomerular filtration and Na+ and K+ excretion. This diuretic effect, added to the antioxidant effect, would explain the plant's antihypertensive activity.

The vegan diet refers to nutrition based on a wide variety of plant-based food groups (i.e., fruits, vegetables, grains, legumes, nuts and seeds, spices and herbs, mushrooms, and algae) that also excludes all. to all foods of animal origin (ie meat, fish, dairy and eggs). Various scientific studies on the nutritional contribution of the vegan diet in athletes seek to identify the benefits and limitations of a vegan diet in the nutritional requirement of athletes, compared to an omnivore diet. Sports nutrition is essential for optimal physical and mental performance, reduces the risk of illness and injury; That is why it is necessary to consume the macro and micronutrient requirements according to the type and intensity of exercise performed by the athlete. Vegan diets in general provide an optimal basis for vegan athletes to develop their overall potential, from increased intake of complex carbohydrates, dietary fiber, antioxidant vitamins C and E. However, a plant-based diet reduces intake of exclusive nutrients of animal origin. This influences the performance of endurance and strength, even occasions that female athletes develop diseases such as the female athlete triad (FAT) or the Relative Energy Deficiency in Sport (RED-S) if it is not accompanied by supplements of vitamin B12, creatine and proteins. The present bibliographic review aims to show that with an adequate strategic selection and management of food choices, paying special attention to the achievement of energy, macro and micronutrient recommendations, together with adequate supplementation, a vegan diet can satisfy the needs of most athletes satisfactorily.

The COVID-19 pandemic had a huge impact on the health of the population. The role of nutrition in the context of various infectious diseases has been widely discussed in the scientific literature. It was found that, during the pandemic, there were various changes in eating habits, highlighting the increase in vegetables, fruits, and other foods with higher nutritional value. In addition, studies suggest that nutritional status, the immune system and the presence or absence of comorbidities are factors that predispose to a greater or lesser risk of SARS-CoV-2 infection. Nutritional risk has been involved with the severity of the patient with COVID-19. In this way, the nutritional factors that influence the immune system, added to the change in eating habits during the pandemic, would determine the susceptibility to SARS-CoV-2 infection. According to the available evidence, recommendations regarding a healthy diet in susceptible people could reduce the impact of confinement.

Objetive: To describe the evolution of body mass index, hematocrit and blood pressure in medical students. Methods: Longitudinal and retrospective study. 77 clinical histories were analyzed in medical students, who were attended in service Bienestar Universitario of the UNT, from first academic year (2013) to sixth academic year (2018). Was evaluated the mean and standard deviation, and if exists difference according gender and the totality of students, through statistics test t student, p < 0.05. Results: 29.87% were women and 70.13% men. The mean and standard deviations were respectively: BMI (Body mass index, kg/m2) 23.26 (DE: 3.99) and 24.85 (DE: 3.87), SBP (mmHg) 113.39 (DE: 11.75) and 117.70 (DE: 13.40), DBP (mmHg) 69.90 (DE: 10.36) and 69.19 (DE: 8.10), hematocrit in female group 39.48% (DE: 2.91) and 39.17% (DE: 2.85), hematocrit in male group was 46.74% (DE: 2.55) and 45.43% (DE: 2.86). Mean differences between first and sixth year; in all students, in BMI and SBP were significant (p<0.05), not in DBP; in female gender changes in BMI was significant (p<0.05), but not SBP, DBP and hematocrit; and in male gender BMI, hematocrit and SBP were significant, but not DBP. Conclusion: Over the course of 6 years of study, BMI and SBP in medical students increase; hematocrit in male gender decrease and in female gender doesn’t change.

Autosomal Dominant Polycystic Kidney Disease, known by its acronym ADPKD (Autosomal Dominant Polycystic kidney disease), is a condition of genetic origin characterized by two types of mutations in the PKD1 and PKD2 genes that code for polycystins (PC) 1 and 2, respectively. It is associated with extrarenal manifestations, both cystic and non-cystic; the liver is the most affected organ within the cystic manifestations; as well as cerebral vascular alterations, in non-cystic ones. We report a 44-year-old woman with polycystic hepato-renal disease (PLKD) complicated by intestinal subocclusion.