1.Cross-reactive IgE-binding proteins from Philippine allergenic weeds and trees pollen extracts
Maria Katrina Diana M. Cruz ; Mary Anne R. Castor ; Krystal M. Hate ; Gregg Austine M. Balanag ; Roche Dana C. Reyes ; Maria Socorro Agcaoili-de jesus ; Cherie C. Ocampo-cervantes ; Leslie Michelle M. Dalmacio
Acta Medica Philippina 2025;59(Early Access 2025):1-6
BACKGROUND
The Philippines has a wide variety of plant species with potential to produce allergenic pollen grains. Most of the study subjects which are residents in Manila tested positive to Fabaceae and Amaranthaceae. Weeds, especially the Amaranthaceae and Fabaceae families, are relevant triggers of allergy as they are highly adaptive and can grow despite adverse weather conditions. However, only a few allergens have been identified among these families and listed in the International Union of Immunological Societies allergen nomenclature database. Currently, local pollen grains are being processed at the Medical Research Laboratory of our institution to produce crude pollen extracts for use in specific diagnostic skin tests and in subcutaneous immunotherapy of patients with respiratory allergies all over the country. However, these extracts have not been characterized and data of cross-reactivity is limited.
OBJECTIVESThis study aimed to evaluate the IgE binding activity of allergen extracts from Philippine weeds and trees, and determine their cross-reactive components.
METHODSPollen extracts from Amaranthus spinosus (pigweed), Mimosa pudica (makahiya), Tridax procumbens (wild daisy), Albizia saman (acacia), Leucaena leucocephala (ipil-ipil), Mangifera indica (mango), and Cocos nucifera (coconut) were extracted and analyzed for crossreactivity using ELISA and Western blot.
RESULTSCross-reaction was observed between ipil-ipil and coconut, and between makahiya and wild daisy. IgE bound to protein components at ~20, 18, and 15 kDa of the weeds, while for the trees, IgE bound to protein components at ~35 and ~15 kDa which may be responsible for the cross-inhibitions observed.
CONCLUSIONData may contribute to the development of immunotherapeutic strategies and diagnostic applications for respiratory allergies, comprising the production of standardized panel of allergens thus eliminating unwanted side effects and providing patients with safer diagnosis and therapy.
Plants ; Pollen ; Allergens ; Amaranthus ; Arecaceae
2.Early clinical and electrophysiologic predictors of a complicated clinical course in Guillain-Barré syndrome: a 14-year retrospective study
Marvic Joseph S. AMORANTO ; Mark Anthony J. Sta. MARIA
Annals of Clinical Neurophysiology 2025;27(2):52-66
Background:
Electromyography and nerve conduction studies (EMG-NCS) often yield nonspecific findings during the early stage of Guillain-Barré syndrome (GBS). Although useful for diagnosis, EMG-NCS are traditionally of little value in predicting a complicated clinical course, which is critical for timely decisions to initiate immunomodulatory treatment. We aimed to identify the early clinical and electrophysiologic predictors of respiratory failure, a prolonged hospital stay, and moderate-to-severe disability at discharge in GBS.
Methods:
We retrospectively analyzed the clinical and electrophysiologic data of adult GBS patients who were hospitalized during the early course of the disease (<2 weeks from symptom onset).
Results:
Eighty-one patients aged 47.5 ± 16.1 years were analyzed. The most common clinical variants were Miller-Fisher syndrome (30.9%) and classic sensorimotor GBS (25.9%). The clinical variant was not predictive of a complicated clinical course. Instead, specific clinical features such as dysautonomia (p = 0.006) and marked motor deficits (p = 0.002) were predictive of the primary composite outcome of respiratory failure and/or a prolonged hospital stay, with dysautonomia (p = 0.035) also predictive of moderate-to-severe disability at discharge. The most common abnormalities in EMG-NCS were bilateral absence of the H-reflex (86.4%) and F-wave abnormalities (44.4%). The presence of F-wave abnormalities was predictive of both respiratory failure (p = 0.032) and a prolonged hospital stay (p = 0.001).
Conclusions
Early F-wave abnormalities in GBS may serve as an electrophysiologic predictor of a complicated clinical course, suggesting that EMG-NCS can provide prognostic information to guide treatment decisions during the early stage of the disease.
3.Cross-reactive IgE-binding proteins from Philippine allergenic weeds and trees pollen extracts.
Maria Katrina Diana M. CRUZ ; Mary Anne R. CASTOR ; Krystal M. HATE ; Gregg Austine M. BALANAG ; Roche Dana C. REYES ; Maria Socorro AGCAOILI-DE JESUS ; Cherie C. OCAMPO-CERVANTES ; Leslie Michelle M. DALMACIO
Acta Medica Philippina 2025;59(19):53-58
BACKGROUND
The Philippines has a wide variety of plant species with potential to produce allergenic pollen grains. Most of the study subjects which are residents in Manila tested positive to Fabaceae and Amaranthaceae. Weeds, especially the Amaranthaceae and Fabaceae families, are relevant triggers of allergy as they are highly adaptive and can grow despite adverse weather conditions. However, only a few allergens have been identified among these families and listed in the International Union of Immunological Societies allergen nomenclature database. Currently, local pollen grains are being processed at the Medical Research Laboratory of our institution to produce crude pollen extracts for use in specific diagnostic skin tests and in subcutaneous immunotherapy of patients with respiratory allergies all over the country. However, these extracts have not been characterized and data of cross-reactivity is limited.
OBJECTIVESThis study aimed to evaluate the IgE binding activity of allergen extracts from Philippine weeds and trees, and determine their cross-reactive components.
METHODSPollen extracts from Amaranthus spinosus (pigweed), Mimosa pudica (makahiya), Tridax procumbens (wild daisy), Albizia saman (acacia), Leucaena leucocephala (ipil-ipil), Mangifera indica (mango), and Cocos nucifera (coconut) were extracted and analyzed for crossreactivity using ELISA and Western blot.
RESULTSCross-reaction was observed between ipil-ipil and coconut, and between makahiya and wild daisy. IgE bound to protein components at ~20, 18, and 15 kDa of the weeds, while for the trees, IgE bound to protein components at ~35 and ~15 kDa which may be responsible for the cross-inhibitions observed.
CONCLUSIONData may contribute to the development of immunotherapeutic strategies and diagnostic applications for respiratory allergies, comprising the production of standardized panel of allergens thus eliminating unwanted side effects and providing patients with safer diagnosis and therapy.
Plants ; Pollen ; Allergens ; Amaranthus ; Arecaceae
4.Investigating the relationship between acne vulgaris severity and quality of life in young people at a tertiary hospital in the Philippines: A cross-sectional study
Janine May V. Sta. Maria ; Maria Sharlene P. Temblique
Journal of the Philippine Dermatological Society 2024;33(Suppl 1):38-38
BACKGROUND
Acne vulgaris is a common condition among young people affecting body image. Despite being benign, its impact may be underestimated necessitating holistic treatment.
OBJECTIVESThis study aimed to determine the relationship between quality of life (QoL) and acne severity, and its association to demographic characteristics in young people with acne vulgaris. Methods: A cross-sectional study was conducted among 75 patients with acne vulgaris aged 10 24 years seen at a tertiary hospital in the Philippines. Patients completed a self-administered questionnaire, the Cardiff Indeks ng Kapansanan nang may Tigyawat (CIKT), and were assessed using the Global Acne Grading System (GAGS). Statistical analysis examined correlations between acne severity, QoL and demographic factors.
RESULTSThe 75 participants recruited were mainly female, aged 19-24 with monthly family incomes between 9,520 and 43,828 pesos. Many had acne for over three years and were self assessed as moderate. On evaluation, most were classified as having mild acne with moderate QoL impairment. Data analysis revealed a moderate positive correlation between acne severity and QoL, indicating that with increased acne severity, the more significant patients’ QoL scores were affected. Self-evaluation and sex were linked to acne severity, with acne self-evaluation showing a statistical significance in relation to QoL. No significance was seen with sex and QoL
CONCLUSIONA personalized treatment is essential for young patients with acne vulgaris. Factors such as acne severity, self-evaluation, sex and the quality of life should be considered to address the impact of acne on patients’ lives.
Acne ; Acne Vulgaris ; Quality Of Life
5.Effect of Garcinia binucao crude leaf extract supplementation on lifespan of Drosophila melanogaster chronically exposed to alcohol
Joanne Jennifer E. Tan ; Ourlad Alzeus G. Tantengco ; Nicholas Robert C. Tan ; Clyde E. Silverio ; Ana Denise V. Sison ; Joseph P. Sta. Maria Jr. ; Karol Ina G. Tablante ; Joyce Gillian A. Tiam-Lee ; Maria Concepcion C. Sison ; Paul Mark B. Medina
Acta Medica Philippina 2024;58(5):52-56
Background:
Consumption and abuse of alcohol remains a significant cause of concern worldwide. Furthermore, there is evidence of the association between chronic alcohol use and reduced life expectancy.
Objectives:
To study the effects of Garcinia binucao extract (GBE) supplementation on lifespan of Drosophila
melanogaster, in the presence or absence of chronic alcohol exposure.
Methods:
D. melanogaster was mass cultured and given GBE supplementation in high (1 mg/mL) and low (200 µg/mL) sublethal doses. D. melanogaster flies were divided into groups - with and without chronic alcohol exposure, and their respective lifespans were monitored.
Results:
In D. melanogaster without alcohol exposure, mean lifespan was highest in the control flies (38.15 days), followed by high-dose GBE (34.42 days), low-dose GBE (33.24 days), and DMSO (22.29 days). In D. melanogaster chronically exposed to alcohol, the longest mean lifespan was observed in flies treated with high-dose GBE (33.80 days), followed by low-dose GBE (33.63 days), the DMSO group (30.30), and the control group (29.65 days), but the differences were not statistically significant. Comparing groups with and without chronic alcohol exposure, the mean lifespan of the control group chronically exposed to alcohol significantly decreased by 9.51 days (p < 0.05). In GBE treatment groups, mean lifespan significantly decreased by 0.82 days in high-dose set-up (p < 0.05), and significantly increased by 0.39 days in the low-dose set-up (p < 0.05) upon chronic alcohol exposure.
Conclusion
Garcinia binucao extract supplementation ameliorated the observed reduction in lifespan of Drosophila melanogaster chronically exposed to alcohol.
Drosophila melanogaster
;
Longevity
6.Predictive Models for Forecasting Coronavirus Disease 2019 Cases: Relevance to Public Health Services
Alvin O. Cayogyog ; Reynaldo O. Cuizon ; Felix C. Chavez Jr ; Randy A. Tudy
International Journal of Public Health Research 2024;14(no.1):1876-1887
Introduction:
The global impact of the coronavirus disease 2019 (COVID-19) pandemic has continually jeopardized vulnerable populations encompassing children, youth, elders, and individuals with immunodeficiency and comorbidities.
Methods:
In recognizing the crucial role of predictive analytics in shaping public health decisions, this study utilizes a predictive design, drawing on official data from the Department of Health (DOH) in the Davao Region, Philippines, spanning 57 days from March 15 to May 10, 2020. By comparing the Susceptible, Infected, Recovered (SIR) model and the Autoregressive Integrated Moving Average (ARIMA) model, the research aims to provide a scientific foundation for informed decision-making by public health authorities.
Result:
Analysis revealed that the SIR model emerged as the most effective in identifying trends and forecasting future cases. Despite both models indicating a substantial reduction in infection rates, caution is advised against discontinuing control and preventive measures due to the latent potential for another surge. The findings underscore the necessity for scientifically forecasted data to guide decision-makers in enhancing the responsiveness of public health services during similar and potentially worsening conditions.
Conclusions
Hence, this study contributes to the ongoing pandemic preparedness and responsiveness discourse. Its emphasis on predictive analytics, particularly the SIR model, offers valuable insights for authorities tasked with safeguarding public health. The significance lies in addressing the current situation in the Davao region and providing a template for future scenarios. As the world grapples with the unpredictable nature of infectious diseases, informed decision-making based on scientific forecasts becomes imperative for effective public health management.
7.How to conduct and write a cohort study.
Michael Ian N. Sta. Maria ; Nicolas R. Gordo Jr.
The Filipino Family Physician 2024;62(1):42-50
Cohort studies is an epidemiologic study that follows a group of individuals who share a common characteristic at the start of the study to observe the emergence of outcomes. Cohort studies are classified based on the population characteristics from where they were drawn, the way the data collection occurred or if its open or closed. This allows the computation of the absolute risk or the incidence of an outcome. There are several advantages in conducting a cohort study, such as clarity of temporal relationship of the exposure and outcome, permits the computation of incidence, permits multiple effects of a single exposure, and avoids selection bias on admission. While there are advantages, there are also disadvantages in doing this study, such as it requires long follow-up, need of large sample size, maybe costly, and may make it difficult to argue causation due to the presence of confounding. The statistical test that can be used to analyze the results will depend on the type of variable used. Statistical test such as T-test, Chi square test, and Regression can be used. Writing the final report follows the STROBE guidelines.
Cohort Studies ; Epidemiologic Studies
8.Student performance in year 1 undergraduate medical education during traditional, emergency online, online and HyFlex teaching strategy: A single center study
Maria Milagros U. Magat ; Agnes A. Alba ; Maria Lilia Reyes ; Melissa Calilao ; Vinna Marie T. Quiñ ; ones ; Malou Sta. Ana
Health Sciences Journal 2024;13(1):45-54
Background:
The global pandemic caused by COVID-19, the subsequent improvement in health situation
caused by anti- COVID-19 vaccination and the developments in digital technology prompted changes
in undergraduate medical education as to content delivery and assessment. This study determined the
difference in the performance of first year medical students in traditional face-to face, online and Hyflex
teaching strategy.
Methods:
A non-concurrent cohort study was done to determine the performance of students in three
annual subjects in Year 1 undergraduate medical education for school years 2018 to 2023. One-way
ANOVA at p=0.001 determined significance of differences of variables.
Results:
There was no difference in the profile of students as to their sex, pre-medicine course and
scores in the National Medical Admission Test (NMAT). The performance in the written examinations in
Anatomy and Physiology showed significant difference (p=0.001) when the conduct of examinations was
shifted online on an emergency basis. There was no difference (p=0.001) in performance in the laboratory
conference sessions in Physiology, as compared to the focused group discussion sessions in Biochemistry
and practical examinations in Anatomy.
Conclusion
Significant difference in the performance of first year medical students was observed only
during the emergency shift to online examinations, otherwise the performance was similar in traditional
face-to face, online and Hyflex teaching strategy.
9.A descriptive cross-sectional study on the motivation of work-from-home office workers in the National Capital Region.
Clark Anthony Trovela ; Jennifer Marie L. San Juan ; Marian Angelica C. Tria ; Sofia Kairie T. Tria ; Katrina Isabel G. Trinchera ; Albertito Luis V. Tuazon ; Christine Joyce J. Tumabini ; Maria Penafrancia L. Adversario ; Maria Lourdes D. Sta. Ana
Health Sciences Journal 2023;12(1):57-65
INTRODUCTION:
The landscape of work has changed since the start of the COVID-19 pandemic as more
companies shifted from face-to-face to the work-from-home (WFH) setup. This change has affected several
aspects of human life especially the motivation to WFH. The study aimed to determine the motivation
of WFH among office workers in the National Capital Region (NCR) from March 2020 to February 2022
METHODS:
Using a descriptive cross-sectional study design, an online survey of WFH office workers around
the NCR, Philippines was conducted. A 26-item questionnaire on motivation covering dimensions of
availability (flexibility), safety (work-life balance), and meaningfulness (work performance) was used. Data
was analyzed using SPSS version 24.
RESULTS:
A total of 252 respondents were included in the study, with a majority identifying as females
aged 21 to 30, never married, and college graduates. Additionally, respondents reported having one to
five years of work experience and were employed in professional/technical/managerial fields. Regarding
the impact of remote work, the findings indicated that most individuals who worked from home (WFH)
felt motivated by this setup due to its positive effects on availability, time and cost savings from reduced
commuting, and the flexibility it provided for managing their schedules according to personal preferences.
Furthermore, in terms of safety and conducive work environment, WFH office workers expressed agreement
that the remote work setup contributed to a favorable work environment, leading to increased job
satisfaction. This setup allowed them to effectively balance work responsibilities with personal and family
commitments. The study also revealed that WFH office workers perceived a sense of meaningfulness in
their work, as they felt trusted and valued by their employers. This sentiment contributed to their overall
well-being, both physically and mentally
CONCLUSION
Work-from-home office workers are generally always motivated in terms of availability
(flexibility), safety (work-life balance) and meaningfulness (work performance).
motivation
;
flexibility
;
work-life-balance
;
work performance
10.Decisions based on health economic analysis
Michael Ian Sta Maria ; Jane Efflyn Lardizabal-Bunyi
The Filipino Family Physician 2022;60(1):63-69
Family and community practitioners sometimes will decide on what community-oriented interventions to propose and implement. The cost and effectiveness of such interventions are often debated by policy makers. A set of formal, quantitative methods for comparing alternative strategies in resource use and expected outcomes is known as health economic analysis. This article presents a tool to help family and community practitioners decide on the cost and effectiveness of such interventions.
Evidence-Based Practice
;
Economics, Medical


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