Coronavirus disease 2019 (COVID-19) is an inflammatory and infectious disease caused by severe acute respiratory syndrome coronavirus 2 virus with a complex pathophysiology. While COVID-19 vaccines and boosters are available, treatment of the disease is primarily supportive and symptomatic. Several research have suggested the potential of herbal medicines as an adjunctive treatment for the disease. A popular herbal medicine approved in the Philippines for the treatment of acute respiratory disease is Vitex negundo L. In fact, the Department of Science and Technology of the Philippines has funded a clinical trial to establish its potential as an adjunctive treatment for COVID-19. Here, we utilized network pharmacology and molecular docking in determining pivotal targets of Vitex negundo compounds against COVID-19. The results showed that significant targets of Vitex negundo compounds in COVID-19 are CSB, SERPINE1, and PLG which code for cathepsin B, plasminogen activator inhibitor-1, and plasminogen, respectively. Molecular docking revealed that α-terpinyl acetate and geranyl acetate have good binding affinity in cathepsin B; 6,7,4-trimethoxyflavanone, 5,6,7,8,3',4',5'-heptamethoxyflavone, artemetin, demethylnobiletin, gardenin A, geranyl acetate in plasminogen; and 7,8,4-trimethoxyflavanone in plasminogen activator inhibitor-1. While the results are promising, these are bound to the limitations of computational methods and further experimentation are needed to completely establish the molecular mechanisms of Vitex negundo against COVID-19.

Objective: Manihot esculenta (Crantz) leaves have been used for the management of diabetes based on cited ethnopharmacological studies. However, scientific evidence to support its efficacy is lacking. The aim of the study was to assess the cytotoxicity of the aqueous leaf extract and fractions of Manihot esculenta and its potential hypoglycemic effect on male Swiss albino mice. Methods: The cytotoxicity assay was necessary to screen which extract and fractions will be used for the in vivo hypoglycemic study. : Phytochemical screening identified the composition of the aqueous crude extract and its fractions. The phytochemical results showed the presence of alkaloids, anthraquinone glycosides, carbohydrates, phenolic glycosides, saponins, and flavonoids. : Cytotoxicity was screened using CytoTox 96® (Promega), a NonRadioactive Cytotoxicity Assay on liver cancer (HepG2) and normal kidney (HK-2) cell lines. Five samples were tagged as highly cytotoxic and were flagged for further assays. These samples were DCM fraction (100 ppm), n-Hexane fraction (1 and 10 ppm), Ethyl acetate fraction (1 ppm), and Aqueous fraction (100 ppm). Results: The hypoglycemic activity was examined in alloxan-induced diabetic mice using in vivo hypoglycemic study. The aqueous crude extract at dose levels of 200 mg/kg and 300 mg/kg body weight showed significant reduction in blood glucose levels compared to the diabetic control but not exceeding the results in the metformin treatment group. A p-value of 0.05 set a priori was used to consider whether the intervention had a statistically significant difference compared to the diabetic control. Conclusion The effectiveness of aqueous crude extract in reduction of blood glucose in mice may be attributed to the synergistic effects of phytochemicals present, especially the alkaloids which were retained in the extract but were undetectable in the fractionated samples. The results of this study also support the findings of existing ethnopharmacological studies on M. esculenta leaf extract as a hypoglycemic agent.
alkaloids ; hypoglycemic agents ; ethnopharmacology

Background and Objectives: Type 2 diabetes mellitus (T2DM) is a global health concern affecting more than 400 million people worldwide. Diabetic neuropathy, nephropathy, retinopathy, and cardiovascular complications lead to debilitating effects to patients. To prevent these, the treatment goal is to lower the blood sugar levels and maintain at a normal range which is achieved through conventional treatments like insulin and oral hypoglycemic agents. However, the high cost of these medications implicates patient treatment outcomes. Hence, alternatives are sought for including the use of herbal medicines. Momordica charantia (MC) and Lagerstroemia speciosa (LS) are common herbal medicines used to manage T2DM. In the Philippines, these herbal preparations are validated for their glucose lowering effects and are commonly found in combination in food supplements. The study aims to screen the possible mechanisms of compounds present in these herbal medicines which can offer possible explanations for their synergistic effects and rationalization of their combination in preparations. Methods: Network pharmacology was employed to determine pivotal proteins that are targeted by MC and LS compounds. Molecular docking was then done to evaluate the favorability of the binding of these compounds toward their target proteins. Results: Our results showed that TNF, HSP90AA1, MAPK3, ALDH2, GCK, AKR1B1, TTR and RBP4 are the possible pivotal targets of MC and LS compounds in T2DM. Conclusion Terpenoids from MC and decanoic acid from LS are the compounds which showed favorable binding towards pivotal protein targets in T2DM. By binding towards the different key proteins in T2DM, they may exhibit their synergistic effects. However, the results of this study are bound to the limitations of computational methods and experimental validation are needed to verify our findings.
Molecular Docking Simulation ; Network Pharmacology ; Momordica charantia

Background and Objective: The University of the Philippines Manila (UPM) subcommittee on students in distress was convened during the COVID-19 pandemic to develop “plans, programs and mechanisms” to deal with students experiencing distress and mental health concerns. This study was conducted as one of the activities of the Subcommittee to inform policy to address the following research objective: to describe the experiences, perceptions, and knowledge of both students and faculty members of UP Manila regarding distress. Methods: An online survey tool was created using the results from seven online focus group discussions among 20 faculty of UP Manila. The survey was conducted for one month among faculty and students sampled from the seven colleges of UP Manila and the three extension campuses of the Schools of Health Sciences. The different categories which were consistently perceived as important by both faculty and students as well as those with disparity in the perceptions between faculty and students were described and discussed. Results: A total of 136 faculty (F) and 290 students (S) participated in the study, representing 39% vs 98% (F vs S) of the target sample, respectively. Results showed that among the effects of stressors for students, avoidance of schoolwork (F79 vs S70.3%) and sleep disturbance (F79.4 vs S72.4%), were perceived by both faculty and students as the most frequently perceived response of students to stress.Among the causes of stress, unclear boundaries between school and home (F73.5 vs S63.1%), family duties (F76.5 vs S50.7%), lack of socialization (F89 vs S57.6%), limited recreational activity (F76.5 vs S64.8%), adapting to new ways of socialization (F67.6 vs S53.8%), and internet signal (F99.3 vs S88.3%) were perceived by both faculty and students as the most frequently perceived causes of stress. Among the coping mechanisms, connecting with friends online (F86.8 vs S69.7%), listening to music (F72.8 vs S78.3%), browsing social media (F82.4 vs S81%), viewing movies (F84.6 vs S74.5%), and sleeping or resting (F67.6 vs S84.1%) were perceived by both faculty and students as the most employed by students to cope with stress.Results also show that there were marked disparities in the perceptions of faculty and students. Among the effects of stressors, the largest disparities were in non-performance in academics (F86 vs S51.7%) and academic failure (F76.5 vs S53.8%). Of the causative factors, the largest disparities were in the areas of death (F94.1 vs S14.5%) or sickness in the family (F66.9 vs S0%), family issues (F82.4 vs S24.5%), financial concerns (F89 vs S36.9%), absence of physical connectedness and interaction, (F94.9 vs S23.8%) lack of socialization (F89 vs S57.6%), owning a gadget (F73.5 vs S22.1%), and lack of funds for the internet (F79.4 vs S22.4%).Among the support systems available in the university (psychosocial, academic and wellness activities of the colleges), 70% of the faculty perceived that the students were aware of the support process offered by the university. In contrast, 28% of students were aware of the support services offered to them. Conclusion This study shows that UP Manila faculty and students perceived stress due to the effects of COVID-19 on teaching, learning, and everyday living. Distress among student respondents was commonly perceived to be caused by family concerns, environmental restrictions, connectivity issues, and experiencing a sense of lack. While support services and mental health programs have been in place within the university, only 28% of students perceive that students in distress were aware of the process in receiving support.
Adaptation, Psychological ; Mental Health ; COVID-19 ; Education