Digital Commons Network^™

Impact Of Innate, Adaptive, And Cellular Immunity On Viral Reproductive Cycle: A Stochastic Extinction Analysis, Rahnuma Islam, David Swigon

Biology and Medicine Through Mathematics Conference

No abstract provided.

Modeling Epidemic Dynamics With Renewal Processes And General Lifetime Distributions, Divine Wanduku, Divine Wanduku

Biology and Medicine Through Mathematics Conference

No abstract provided.

Stochastic Invasion And Extinction In Environmentally Transmitted Diseases, Mahmudul Bari Hridoy, Lauren M. Childs

Biology and Medicine Through Mathematics Conference

No abstract provided.

The Making Of An Extremist: How Do We Become Someone Else’S Nightmare?, María Paula Morales

The Confluence

This article explores how ordinary people can be pulled into extremist movements and what psychological forces drive that process. It looks at three perspectives: social identity theory, which explains how group belonging shapes behavior, identity development, which shows how people searching for meaning may find it in extremist causes; and social neuroscience, which connects radicalization to brain activity linked to fear, loyalty, and moral judgement. Together, these approaches show that radicalization is not simply about ideology but about identity, emotion, and belonging. By understanding these dynamics, we can find better ways to prevent extremism and promote healthier, more inclusive communities.

A New Framework For Studying Transient Reactivity In Two-Dimensional Linear Systems., Mary Lou Zeeman, Alanna Haslam-Hyde, James Broda

Biology and Medicine Through Mathematics Conference

No abstract provided.

Modeling Psychological And Demographic Predictors Of Analog Astronaut Mission Participation, Christian Yeara Herrero, Frányerson R. López Ochoa, Mackenzie Thomas, Phoebe Fleshman

Student Research Symposium (SRS)

As plans accelerate to send humans into orbit and to other celestial bodies, whether to lunar outposts, Mars bases, or commercial space stations, it becomes increasingly important to understand how to maintain healthy, cohesive, and productive crews in confined, isolated environments. A practical way to study human adaptation to these conditions is through analog astronaut missions on Earth. Although imperfect, these facilities provide the closest Earth-based simulation of space mission conditions. Currently, over ten analog research centers are operating worldwide, including NASA’s Human Exploration Research Analog (HERA) and the Crew Health and Performance Exploration Analog (CHAPEA) habitats. Selecting and recruiting …

Dynamic Homeostasis In Relaxation And Bursting Oscillations, Christopher J. Ryzowicz

Biology and Medicine Through Mathematics Conference

No abstract provided.

How Human Behavior Shapes Epidemic Dynamics, Leah Lejeune, Navid Ghaffarzadegan, Lauren M. Childs, Omar Saucedo

Biology and Medicine Through Mathematics Conference

No abstract provided.

Dynamics For Complex Quadratic Networks, Templates And Mutations, Anca R. Radulescu, Eva Kaslik, Alexander Fikl, Sarah Muldoon, Johan Nakuci, Mark Comerford

Biology and Medicine Through Mathematics Conference

No abstract provided.

Delineating Differences In Firing Rate Estimates Of Healthy And Parkinsonian Single-Unit Basal Ganglia Recordings, Richard R. Foster, Cheng Ly

Biology and Medicine Through Mathematics Conference

No abstract provided.

Artificial Photosynthesis To Overcome Oxygen Deprivation During Respiratory Disease Crisis-A Mini Review, Devadass Jessy Mercy Ms, Harini Rm Ms, Agnishwar Girigoswami Prof, Koyeli Girigoswami Prof

Chulalongkorn Medical Journal

Respiratory diseases are mainly treated using several symptomatic treatments, supported by oxygen for the patients. During the Coronavirus disease 2019 (COVID-19) pandemic, oxygen concentrators were in high demand, and even after that, many patients lost their lives to this pandemic due to a shortage of oxygen cylinders. This crisis instigated many entrepreneurs to open oxygen plants, which needed a large scale set up. The articles were searched using Google Scholar, Scopus, and Web of Science using appropriate keywords to write this review article. In this review, we have summarized the need for oxygen that can be overcome using artificial photosynthesis. …

Imaging Of The Centromedian Thalamic Nucleus Using 3d Fast Gray Matter Acquisition T1 Inversion Recovery Sequence In 3t Mri In Epilepsy, Tunchanok Paprad, Thanyachat Yutthakasaemsan, Supada Prakkamakul

Chulalongkorn Medical Journal

Background:

The centromedian thalamic nucleus (CM) is an emerging deep brain stimulation (DBS) target for neurological disorders, including drug-resistant epilepsy. Traditional DBS localization relies on predefined stereotactic coordinates, which may be imprecise. Novel MRI sequences enhance gray-white matter contrast, potentially allowing direct CM visualization, improving accuracy in DBS planning and targeting.

Objective:

This study evaluates the 3D Fast Gray Matter Acquisition T1 Inversion Recovery (FGATIR) MRI sequence for the visualization of the CM in epilepsy patients.

Methods:

This prospective IRB-approved descriptive study included adult epilepsy patients who underwent 3D FGATIR MRI sequence at 3 Tesla. Two neuroradiologists independently assessed CM …

Association Of Mirnas As Biomarkers For Severe Liver Dysfunction In Severe Dengue Infection, Napat Pas-Arj, Nattachai Srisawat, Umaporn Limothai, Sasipha Tachaboon, Janejira Dinhuzen

Chulalongkorn Medical Journal

Background: Identification early biomarkers for predicting severe liver dysfunction in severe dengue patients is essential. Currently, there is no any data on circulating microRNAs to predict this important complication.

Objectives: This study aimed to explore the role of circulating microRNAs in prediction severe liver dysfunction in dengue infection by identifying and validating predictive microRNAs via Nanostring and RT-qPCR.

Methods: On the initial day of admission, serum samples were gathered from patients with dengue infection. These patients were monitored for 14 days post-admission to ascertain their final diagnosis. Following the WHO 2009 criteria, participants were categorized into severe liver dysfunction and …

Psychosocial Predictors Of Depression And Anxiety In Thai Stroke Caregivers, Chanatip Tongyonk, Sorawit Wainipitapong, Chavit Tunvirachaisakul, Aurauma Chutinet, Michael Maes, Thitiporn Supasitthumrong

Chulalongkorn Medical Journal

Background: Caregivers of stroke survivors often face significant psychological challenges, yet limited research in Thailand has explored how patient and caregiver characteristics jointly influence caregiver mental health outcomes.

Objective: To identify characteristics of ischemic stroke patients and their caregivers that may predict distress, sadness, and anxiety symptoms in the caregivers.

Method: To measure caregivers' burden, stress, depression, and anxiety symptoms, the Hospital Anxiety and Depression Scale (HADS), Zarit Burden Interview (22-item ZBI), and Perceived Stress Scale (PSS-10) were utilized. To define a multi-step mediation model, we used partial least squares structural equation modelling (PLS-SEM).

Result: 97 stroke patients and their …

The Use Of Electronic Notifications To Improve Guideline Adherence In Amiodarone Adverse Reaction Monitoring, Naruepat Sangpornsuk, Teetouch Ananwattanasuk

Chulalongkorn Medical Journal

Background: Amiodarone is an antiarrhythmic drug that can cause side effects on the thyroid, liver, lungs, vision, and nervous system. Guidelines for monitoring and surveillance of these side effects have been established since 2000, but adherence to them is low in many countries including Thailand. An electronic alert system was implemented to remind physicians of the monitoring guideline at Vajira Hospital, Navamindradhiraj University, Thailand since 23 August 2023.

Objective: This study aimed to compare adherence with the amiodarone guideline before and after implementing an electronic notification system (primary outcome) and to assess the incidence of amiodarone-related adverse reactions (secondary outcome). …

The Association Between Sarcopenia And Functional Outcomes After Bipolar Hemiarthroplasty In Elderly Patients With Displaced Femoral Neck Fracture. Structural Equation Modeling., Sanzhar Artykbay, Stephen J. Kerr, Saran Tantavisut

Chulalongkorn Medical Journal

Background: Sarcopenia is an underrecognized condition that may impair recovery after hip fracture surgery in older adults.

Objectives: This study aimed to assess the impact of sarcopenia on functional outcomes and hip muscle strength in elderly individuals with femoral neck fractures while accounting for other potential confounding factors through a structural equation model (SEM).

Methods: Between January 2023 and October 2024, a prospective cohort study at a tertiary university hospital enrolled patients aged 60 and older undergoing bipolar hemiarthroplasty for displaced femoral neck fractures. Functional recovery was evaluated at 3-months follow-up using the Barthel Index (BI), Short Physical Performance Battery …

Clinical Outcomes Between Transradial And Transfemoral Primary Percutaneous Coronary Intervention In St-Segment Elevation Myocardial Infarction Patients In Chonburi Hospital: A Retrospective Study, Artit Torpongpun, Pornchai Ngamjanyaporn, Woravit Tantisiriwat, Chanadda Rutnuntamongkon, Gahn Nakornchai, Paramaporn Suttirut

Chulalongkorn Medical Journal

Background: According to recent global data, transradial primary PCI in ST-elevation myocardial infarction (STEMI) patients has demonstrated better procedural outcomes compared to transfemoral PCI.

Objective: To compare the clinical outcomes between transradial and transfemoral primary PCI in STEMI patients at Chonburi Hospital.

Methods: Patients diagnosed with STEMI who underwent PCI at Chonburi Hospital between October 1, 2016, and September 30, 2023, were enrolled. Clinical data were obtained through a retrospective review of medical records and the Chonburi Hospital STEMI registry database.

Results:A total of 913 patients were eligible for statistical analysis, with 532 and 381 patients undergoing PCI via …

Factors Influencing Outcomes In Neonatal Abdominal Surgery: Surgeons’ Perspectives, Nimmita Srisan, Kanyarat Olarachin, Pattamon Sutthatarn, Katawaetee Decharun, Prapapan Rajatapiti, Somboon Reukvibunsi, Paisarn Vejchapipat

Chulalongkorn Medical Journal

Neonatal abdominal surgery was often indicated by congenital conditions, presenting significant risks of morbidity and mortality. However, comprehensive surgical data and identification of complication-related risk factors still receive little attention.

Purpose: Our objectives were to characterize neonatal patients undergoing abdominal surgery and to identify prognostic factors influencing complications and mortality in those patients.

Methods: A retrospective study was conducted on newborn patients aged between 0-30 days undergoing index surgery at a university hospital from 2013 to 2021. Categorical data were compared between the without-complication group and the with-complication group using the Chi-square tests and Fisher-Exact tests. Continuous data were analyzed …

Discharge Rates From Pediatric Emergency Departments Against Medical Advice Can Be Reduced By Improving Service Quality, Sounira Mehri, Josef Finsterer

Saudi Medical Journal

No abstract provided.

Integrating The Private Sector Into Surgical Residency Training: Insights From Dr. Sulaiman Al Habib Medical Group, Saudi Arabia, Nuha A. Alsaleh

Saudi Medical Journal

No abstract provided.

Covid-19–Associated Rhabdomyolysis In Hospitalized Patients: Retrospective Cohort Study, Paula Esquerdo-Serrano, Silvia Otero-Rodriguez, Hector Pinargote-Celorio, Sergio Reus, Esperanza Merino, José-Manuel Ramos-Rincón

Saudi Medical Journal

Objectives: To determine the frequency of rhabdomyolysis in patients hospitalized with COVID-19 and to characterize their clinical features and outcomes. Methods: All adults admitted to the hospital were included in this single-center retrospective cohort study with COVID-19 at a tertiary care institution in Alicante, Spain, between March 2020 and March 2024. A creatine kinase (CK) threshold of 1000 U/L or higher was used to define rhabdomyolysis. Demographic, clinical, laboratory, treatment, and outcome data were collected. Patients with and without rhabdomyolysis were compared, and factors associated with in-hospital mortality (IHM) were analyzed. Results: Among 7,590 hospitalized COVID-19 patients, 20 developed rhabdomyolyses …

Coronary Artery Ectasia: A 10-Year Experience At A Single Center In Saudi Arabia, Talal F. Aljabbary, Meshal S. Alhamed, Mohamed H. Ismaeel, Abdulrahman O. Alhaqbani, Abdullah S. Alhumimidi, Nouf A. Alanazi, Ayman M. Alsaleh, Khalid M. Aljohani, Waleed M. Alharbi, Mostafa Q. Alshamiri

Saudi Medical Journal

Objective: To assess the incidence of coronary artery ectasia (CAE) and its associated clinical characteristics and outcomes over a long follow-up period in Saudi Arabia. Methods: We retrospectively analyzed all coronary angiography procedures performed between January 2013 and June 2023. Patients with CAE were included in the final analysis. Results: During the 10-year period, 10,397 patients underwent coronary angiography. The CAE was diagnosed in 242 patients, yielding an incidence of 2.3%. The majority were male (92.6%). The average age was 57.15 ± 11.76 years. The right coronary artery (RCA) was the most involved vessel (65.2% of all patients). The most …

Tumor Markers And Pancreatic Enzymes Reflect Early Pancreatic Dysfunction In Type 2 Diabetes, Walaa Mohammedsaeed, Suliman Alharbi, Lama Alraddadi, Saja Aljohani, Talat Almehmadi, Sarah Alawfi

Saudi Medical Journal

Objective: To evaluate whether pancreatic enzymes and tumor markers reflect early pancreatic dysfunction in patients with type 2 diabetes mellitus (T2DM). Methods: In this cross-sectional study conducted between January 2023 and January 2024, 300 Saudi adults with T2DM were assessed for serum CA19-9, CA125, amylase, and lipase. Associations with glycemic control, insulin resistance (homeostatic model assessment for insulin resistance [HOMA-IR]), and metabolic parameters were examined using multivariable linear and logistic regression adjusted for age, sex, body mass index, diabetes duration, lipid profile, and medication use. Receiver-operating characteristic analyses evaluated biomarker performance for identifying poor glycemic control (HbA1c >8.5%). Exploratory analyses …

Male Pelvic Health In Saudi Arabia: Knowledge–Practice Gap In Pelvic Floor Muscle Exercises And Implications For Preventive Physiotherapy And Health Policy, Wael A. S. Alghamdi

Saudi Medical Journal

No abstract provided.

Demographic Profiles, Clinical Characteristics, And Meteorological Context Of Heat-Related Illnesses Among Hajj Pilgrims In 2023, Ghadah Alsaleh, Majed Alsalamah, Fahad Alamri, Fatemah Alsaleh, Anas Khan

Saudi Medical Journal

Objective: To describe the demographic profiles, clinical characteristics, and meteorological context of heat-related illnesses among Hajj pilgrims in 2023.

Methods: A retrospective cross-sectional study was conducted using data from 1,129 pilgrims diagnosed with HRIs across healthcare facilities in Mecca, Mina, and Arafat. Demographic and clinical data were extracted from the Hajj Health Information System, while temperature, humidity, wind speed, and rainfall records were obtained from the National Center for Meteorology.

Results: Heat exhaustion (48.2%) and heatstroke (37.4%) were the most common diagnoses, with 24.9% of the cases requiring hospitalization. Males represented 55.4% of cases and accounted for 51.2% of …

Obesity's Role In Stroke Incidence Among Smokers: An Assessment Of Confounding, Interaction, And Mediation Effects, Saeed Awad M. Alqahtani, Moutasem Salih Aboonq

Saudi Medical Journal

Objectives: To examine the association between body mass index (BMI) category and history of stroke among current smokers, while assessing potential confounding, effect modification by age, and mediation by cardiovascular comorbidities. Methods: Data were analyzed from 53,939 current adult smokers participating in the 2021 Behavioral Risk Factor Surveillance System (BRFSS). Survey-weighted logistic regression estimated the association between BMI categories (underweight, normal, overweight, obese) and self-reported stroke history. The study assessed multicollinearity and adjusted for sociodemographic and health variables. Interaction terms were tested to evaluate effect modification by age, and exploratory decomposition analysis was used to assess mediation by conditions such …

Prevalence And Antimicrobial Susceptibility Patterns Of Nosocomial Bacteria Across Different Units At King Faisal Complex Hospital, Taif, Kingdom Of Saudi Arabia, Nahed Hawsawi, Renad N. Al-Jaiud, Layal L. Khyyat, Kholoud Alsulimany, Manhal Shabat

Saudi Medical Journal

Objectives: Nosocomial infections significantly impact patient morbidity, mortality, and healthcare costs. To determine the prevalence, bacteriological profiles, antimicrobial susceptibility patterns, and resistance distribution of pathogens causing nosocomial infections at King Faisal Medical Complex, Taif, Kingdom of Saudi Arabia. Methods: This cross-sectional study was conducted between September 2023 and March 2024 at different hospital units following ethical approval. Samples (n = 667) were collected from patients (both genders; all ages) exhibiting infection symptoms ≥ 48 h post-admission and pre-antibiotic administration. Bacterial identification involved culture, Gram staining, and biochemical tests. Antimicrobial susceptibility was tested using the Phoenix100 system. Results: Of 667 patients, …

From Early Adversity To Adult Health: Quality-Of-Life Consequences In A Mental Illness In Saudi Arabia, Rawan Saad Alghamdi, Ahmad A. Mirza, Ibrahim Fae Asiri, Fatemah Samir Alghamdi, Nawaf Abdulaziz Alharthi, Shaymaa A. Abdalal, Iman K. Ramadan

Saudi Medical Journal

Objectives: Childhood trauma (CT) is prevalent among bipolar disorder (BD) patients and exacerbates clinical outcomes, which may impact the quality of life (QoL). This study explores the prevalence of CT and its association with QoL among BD patients in Saudi Arabia. Methods: Cross-sectional study conducted among adults with BD during the euthymic phase. Sample size was estimated using a single-proportion approach (target n=141), and participants recruited by convenience sampling of eligible outpatients. CT was assessed using the Childhood Trauma Questionnaire (CTQ), and QoL using the the Brief Quality of Life in Bipolar Disorder (Brief QoL.BD). Results: The CT prevalence was …

Re-Emergence Of Pertussis In The Pediatric Population: A Tertiary Care Center's Experience, Haya S. Alshaibani, Tahir K. Hameed, Khaled H. Alsager, Mohammed A. Alshaalan, Syed F. Jamil

Saudi Medical Journal

Objectives: To describe the 2024 surge in pertussis cases in the pediatric population in a large tertiary care center in Riyadh, Saudi Arabia. Methods: A retrospective observational study was conducted on children aged 0–14 years with PCR-confirmed Bordetella pertussis infection diagnosed at a tertiary hospital in Riyadh between January and December 2024. Patients older than 14 years, with negative or indeterminate PCR results, or diagnosed outside the study period were excluded, and demographic, immunization, clinical, and outcome data were analyzed. Results: A total of 36 children were diagnosed with pertussis, with 35 (97.2%) requiring hospital admission. The median age was …

A Retrospective Cohort Study Of Uterine Cancer Epidemiological Analysis And Age-Based Disparities In Saudi Arabian Population Across 32 Years, Sallwa M. Alshehre, Mohammad A. Althubiti

Saudi Medical Journal

Objectives: To investigate the burden of uterine tumour in Saudi Arabia during the past 32 years (1990–2021), with an emphasize on the prevalence, incidence, mortality, and disability-adjusted life years (DALYs). Knowing these patterns strengthen the national aims of cancer control under Kingdom of Saudi Arabia (KSA) Vision 2030. Methods: A retrospective study was performed using data retrieved from the Global Burden of Disease (GBD) database. The work included population from Saudi Arabia between 1990 and 2021 and tested standardization age-specific metrics, involving uterine tumour incidence, prevalence, mortality, and DALYs. Results: Uterine tumour cases raised from 507 in 1990 to 6,366 …