Digital Commons Network^™

Sub-Regional Motor–Somatosensory Connectivity And Lifespan Plasticity In Functional Networks, Adnan A. S. Alahmadi

Neurosciences

Objectives: To determine how cytoarchitectonically defined subdivisions of the primary motor cortex, somatosensory cortex, and supplementary motor area (SMA) reorganize their integration with large-scale brain networks during healthy aging. This study investigated the lifespan trajectories of functional connectivity within cytoarchitectonically defined subregions of the primary motor cortex, somatosensory cortex, and supplementary motor area (SMA).

Methods: We conducted a cross-sectional analysis of resting-state fMRI data from 150 healthy individuals (aged 23–80 years), stratified into young, middle-aged, and older groups. Data were sourced from the Southwest University Adult Lifespan Dataset (SALD) and analyzed between June 2024 and June 2025. Using the Jülich …

Clinical Characteristics Of Multiple Sclerosis And Association Of Ms Severity With Vitamin D Level In The Madinah Region Of Saudi Arabia: A Cross-Sectional Study, Majed M. Alluqmani

Neurosciences

Objective: To determine the prevalence of multiple sclerosis (MS) in the western region of Saudi Arabia and correlate it with its predictors among a cohort of patients. The prevalence of MS is increasing in Saudi Arabia, and is attributed to various factors such as recent lifestyle changes, improved disease recognition, and parental consanguinity. Knowing the exact prevalence of the disease may enhance disease management.

Methods: This cross-sectional study was conducted among individuals diagnosed with MS at clinics in the Madinah region.

Results: The study found that the prevalence of multiple sclerosis is lower in the Madinah region. Additionally, …

Wearable Sensor Technology And Biomechanical Gait Analysis In Post-Stroke Rehabilitation: A Review With Implications For The Saudi Healthcare System, Abdullah H. Alzahrani

Neurosciences

Stroke remains a major cause of disability worldwide, with gait impairment affecting up to 80% of survivors and contributing to long-term dependence, fall risk, and reduced quality of life. In Saudi Arabia, stroke incidence is rising, with a significant burden on younger populations and disparities in access to post-stroke rehabilitation services. Conventional gait analysis tools rely on expensive, specialized laboratory equipment, which limits their availability in low-resource and rural settings. Recent advances in wearable sensor technologies, including inertial measurement units, pressure insoles, and electromyography systems, offer portable, scalable, and cost-efficient options for assessing gait in real-world environments. These systems can …

Investigating The Patent Foramen Ovale–Migraine Link In Southern Saudi Arabia, Al-Amir Bassiouny Mohamed, Maeed Alkathiri, Saad Mushabab Ali Alqahtani, Naif H. Ali, Saima Kashif, Saad A. Alshahrani, Mohammed S. Alqahtani, Mohamed Gaber Mahmoud Gabr, Eltohami Zydan Dafalla, Basharat Hameed Zargar, Wael Qenawi, Ali Mohammed A. Alshehri, Fatimah Asiri, Ahmed Borai

Neurosciences

Objective: Migraine is a highly disabling neurological condition, and increasing attention has focused on a possible connection with patent foramen ovale (PFO).

Methods: This single-center observational study enrolled 45 individuals from January to April 2024: 30 migraine patients with PFO (Group 1) and 15 migraine patients without PFO serving as controls (Group 2). All subjects underwent transthoracic echocardiography and completed standardized instruments including the Migraine Disability Assessment (MIDAS), Headache Impact Test (HIT-6), Migraine Symptom Severity Scale (MSSS), Allodynia Symptom Checklist (ASC-12), Visual Aura Rating Scale (VARS), and Migraine Treatment Optimization Questionnaire (mTOQ-6).

Results: The participant's mean age was 37.3 ± …

Plasma Gdf15 Affects Long-Term Dementia Risk And Alters Neuroimmune Signaling, Cassandra O Blew, Michael R Duggan, Dimitrios Tsitsipatis, Gabriela T Gomez, Zulema Rodriguez-Hernandez, Luke C Pilling, Jingsha Chen, Eva Jacobsen, Heather E Dark, Yifei Lu, Shannon M Drouin, Cassandra M Joynes, Minhao Yao, Murat Bilgel, Abhay Moghekar, Qu Tian, Julián Candia, Mary Kaileh, Aditi Gupta, Krystyna Mazan-Mamczarz, Myriam Gorospe, Alexey Lyashkov, Yevgeniya Lukyanenko, Mika Kivimaki, Philipp Frank, Lori L Jennings, Valborg Gudmundsdottir, Vilmundur Gudnason, Lenore J Launer, Naoto Kaneko, Shintaro Kato, Makio Furuichi, Masaki Shibayama, Masahisa Katsuno, Keita Hiraga, Yukiko Nishita, Rei Otsuka, James R Pike, Mary R Rooney, Pascal Schlosser, Yuhan Cui, Guray Erus, Christos Davatzikos, Rebecca F Gottesman, Iwao Waga, Priya Palta, Christie Ballantyne, Michael Griswold, Zhonghua Liu, Luigi Ferrucci, Allison B Herman, Keenan A Walker

Faculty, Staff and Students Publications

Growth/differentiation factor-15 (GDF15) is a secreted cytokine strongly associated with dementia risk. However, the extent to which GDF15 represents a biomarker and driver of dementia risk remains unclear. Across multiple cohorts, we demonstrated that plasma GDF15 is associated with greater dementia risk over 15- to 25-year follow-up periods when measured in midlife, with stronger associations observed for vascular, compared to Alzheimer's disease (AD), dementia. Two-sample Mendelian randomization supported plasma GDF15's mechanistic role in AD and related dementias, while cohort studies linked it to cerebral small vessel disease, neurodegeneration, phosphorylated tau, and a cerebrospinal fluid proteomic signature indicative of neuroimmune activation. …

Evaluating The Reproducibility And Verifiability Of Nutrition Research: A Case Study Of Studies Assessing The Relationship Between Potatoes And Colorectal Cancer, Yasaman Jamshidi-Naeini, Colby J Vorland, Pranav Kapoor, Bailey Ortyl, Jocelyn Mineo, Luke Still, Korlu Sorsor, Shelby Rodney, Xander Tooze, Brent Flickinger, Beate Henschel, Stephanie L Dickinson, David B Allison

Faculty, Staff and Students Publications

The credibility of nutritional research is dependent on the rigor with which studies are conducted and the ability for independent assessment to be performed. Despite the importance of these, more work is needed in the field of nutrition to buttress the trustworthiness of nutrition research. To develop and apply a process for evaluating the rigor, reproducibility, and verifiability of nutritional research, using the relationship between potato consumption and Colorectal Cancer (CRC) as a case study. We updated existing systematic reviews to include studies on potatoes and CRC, assessing their design, execution, and reporting quality. We attempted to reproduce and verify …

Microglial Swell1 Deficiency Drives Male-Specific Seizure Vulnerability But Paradoxical Neuroprotection Through Impaired Phagocytosis, Abhijeet S Barath, Aastha Dheer, Laura Montier, Mekenzie M Peshoff, Emily Dale, Flavia Goche, Thanh Thanh Le Nguyen, Mastura Akter, Fangfang Qi, Dimitrios Kleidonas, Lauren Harris, Sarah A Jewanee, Anthony D Umpierre, Dale B Bosco, Koichiro Haruwaka, Rajan Sah, Long-Jun Wu, Rongzhuo Hua, Tejaswani Datla

The Brown Foundation: Institute of Molecular Medicine

The discovery of genes encoding the volume-regulated anion channel (VRAC) has enabled detailed exploration of its cell type-specific roles in the brain. LRRC8A (SWELL1) is the essential VRAC subunit. We observed seizure-induced, subunit-specific changes in microglial VRAC expression and investigated its function using conditional KO (cKO) of LRRC8A in microglia. SWELL1 cKO mice exhibited a male-specific increase in kainate-induced seizure severity, yet showed paradoxical neuroprotection against seizure-associated neuronal loss. Mechanistically, SWELL1 deletion led to a cell-autonomous reduction in microglial density and decreased release of VRAC-permeable neuroactive metabolites, including taurine, GABA, and glutamate in culture. Additionally, impaired phagocytic kinetics and reduced …

An Inf2-Dependent Actin-Mediated Step In Inositol 1,4,5-Trisphosphate Receptor Cluster Formation And Activity, Maite R. Zavala, Amrapali Ghosh, Suresh K. Joseph, Rajarshi Chakrabarti

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

Intracellular calcium signaling plays a vital role in regulating various cellular processes including gene regulation, motility, metabolism, and cell death. Inositol 1,4,5-trisphosphate receptors (IP3Rs) on the endoplasmic reticulum (ER) are a major cation channel that regulates stimulus-induced calcium release from the ER. While several molecular players regulate the activity of IP3R, its regulation by actin filaments was uncharacterized. Here, we show that actin filaments polymerized by the specific actin nucleator INF2 facilitate agonist-induced IP3R activity. Our results demonstrate that INF2-mediated actin filaments regulate the formation and/or stability of IP3R clusters on the ER that have been previously shown to be …

Sirt1 And Ifi16 Cooperatively Regulate Hbv Replication Via Epigenetic Modulation And Innate Immune Activation, Zahra Zahid Piracha, Umar Saeed, Neelam Abid, Syed Shahan Gilani, Hafiz Ahmad Bilal Akhtar Chughtai, Areesha Wasti, Muhammad Waseem, Dilber Uzun Ozsahin, Andromeda M. Nauli, Surya M. Nauli

Pharmacy Faculty Articles and Research

Background

Hepatitis B virus (HBV) establishes persistent infection through the formation of a covalently closed circular DNA (cccDNA) minichromosome, which enables immune evasion and sustained viral replication. While SIRT1, IFI16, and STING are known to modulate antiviral pathways, their cooperative role in regulating HBV transcription and host immunity remains poorly defined.

Methods

We investigated the functional interplay between SIRT1, IFI16, and STING using confocal microscopy, chromatin immunoprecipitation (ChIP), gene silencing, and quantitative PCR in HBV-replicating cell models. Interactions with HBV cccDNA and effects on viral transcription and interferon-stimulated gene (ISG) expression were analyzed. Northern blotting and RT-qPCR were used to …

Neddylation Maintains Oocyte Quality By Stabilizing Mitochondrial Transcription, Avery A Ahmed, Tessa E Steenwinkel, Bethany K Patton, Peixin Jiang, Matthew D Meyer, Jaspreet K Rishi, Mei Leng, Alexander B Saltzman, Elizabeth S Anaya, Momal Sharif, Laurie J Mckenzie, Laura Detti, Anna Malovannaya, Sean M Hartig, Stephanie A Pangas

Faculty, Staff and Students Publications

Age-related decline in oocyte quality increases the risk of infertility, miscarriage, and birth defects. Mitochondrial dysfunction is a key contributor to this decline. Here, we report that oocyte-specific deletion of Uba3, which encodes the catalytic subunit of the E1 NEDDylation-activating complex, causes sterility in mice. Fully grown, germinal vesicle–stage Uba3 conditional knockout oocytes exhibit mitochondrial dysfunction, including elevated reactive oxygen species, impaired oxidative phosphorylation, and depletion of mitochondrially encoded RNA transcripts. Proteomic analysis identified alterations in mitochondrial-associated proteins, including enrichment of mitochondrial matrix and respiratory chain components and reduced abundance of electron transport chain complexes. These defects were associated …

Conformational Cycling Of The Wntless Transporter Drives Trafficking And Secretion Of Wnt Morphogens, Yunhui Ge, Taciani De Almeida Magalhaes, Hongjiang Wu, Dick J H Van Den Boomen, Thu Uyen Nguyen, Tongyi Dou, Gaya P Yadav, Sukyeong Lee, Zhao Wang, Andrew Lemoff, Xuemei Luo, Sumitha S Menon, Min Zhang, Jin Wang, Zhicheng Jin, Jiansen Jiang, Adrian Salic, Pengxiang Huang

Faculty, Staff and Students Publications

Wnt proteins are lipid-modified morphogens fundamental in development and disease. During Wnt biogenesis, the G-protein-coupled receptor (GPCR)-like transporter Wntless (WLS) escorts lipidated Wnts from the endoplasmic reticulum to the plasma membrane, then transfers them to extracellular carriers, forming active and soluble morphogen-carrier complexes. To dissect the mechanisms involved, we solve cryo-EM structures of Wnt-bound WLS and unliganded WLS, and perform structure-guided functional experiments. Wnts engage WLS via three conserved hairpins, which are all required for Wnt trafficking to the cell surface and carrier-mediated secretion. Wnt release from cells is driven by dramatic conformational changes in the WLS transmembrane domain, reminiscent …

Centralized Review Of Alzheimer's Disease And Related Dementias Biomedical Repositories And Computational Methods, Johaan Kathilankal, Kewei Chen, Chen Zhao, Lingtao Chen, Seyedamin Pouriyeh, Zongxing Xie, Yixin Xie

Faculty Articles

lzheimer’s disease and related dementias (ADRD) are neurodegenerative conditions characterized by progressive cognitive and functional decline. AD pathology is associated with extracellular amyloid-β plaques, intracellular tau neurofibrillary tangles, synaptic dysfunction, and neuronal loss. AD accounts for approximately 60–80% of dementia cases globally. In 2022, AD was the seventh leading cause of death in the United States, and the number of Americans aged 65 and older living with Alzheimer’s dementia is projected to increase substantially by 2060. Despite decades of research, AD/ADRD data resources remain fragmented across clinical, imaging, genetic, genomic, and therapeutic domains. This paper addresses that gap by providing …

Detection, Persistence, And Rising Prevalence Of Oncogenic Viruses Revealed By Wastewater Metagenomics, Harihara Prakash, Ryan K Perez, Matt Ross, Michael Tisza, Sara J Javornik Cregeen, Jennifer Deegan, Joseph F Petrosino, Eric Boerwinkle, Justin R Clark, Anthony W Maresso

Faculty, Staff and Students Publications

Oncogenic viruses cause high-risk cancers in humans and are responsible for nearly 20% of all cancer cases worldwide. Currently, very limited data exist in the realm of wastewater-based viral epidemiology (WBE) for cancer-causing viruses, with existing studies using targeted approaches (i.e., PCR-based approaches) that lack genomic resolution. In this study, we used a hybrid-capture approach to detect, filter, and sequence all known oncogenic virus signals from wastewater samples collected over 3 years (May 2022-May 2025) in 16 Texas cities, covering nearly 25% of the state's population. Once sequenced, we used custom computational tools designed for wastewater metagenomics to assign reads …

Anatomy And Function Of Vasopressin Receptor 1a-Expressing Neurons In The Limbic Thalamus, David Joseph Kahn

Theses and Dissertations

The vasopressin (Avp) system modulates social behavior through region-specific and sex-dependent mechanisms, yet the role of Avp receptor 1a (Avpr1a) signaling in the thalamus has remained largely unexplored. This dissertation examined the distribution and functional contributions of Avpr1a-expressing neurons across the mouse thalamus using a combination of genetic labeling, anatomical quantification, and chemogenetic manipulation. Mapping of Avpr1a-expressing neurons revealed a presence in most thalamic nuclei, with highest densities in the anterior thalamic nuclei and midline nuclei. Notably, Avpr1a-expressing neuron densities did not mirror previously described patterns of Avp innervation, and no sex differences in Avpr1a-expressing neuron density were observed. Chemogenetic …

Long-Term Outcomes Of Lamellar Crescentic Wedge Resection On Corneal Astigmatism And Optical Aberrations In Patients With Advanced Pellucid Marginal Degeneration, Ayşe Burcu, Hande Hüsni̇ye Telek, Hakan Mert, Yaprak Arzu Özdemi̇r, Züleyha Yalniz Akkaya, Evi̇n Şi̇ngar, Selma Özbek Uzman

Turkish Journal of Medical Sciences

Background/aim: The present study investigates the long-term changes in corneal astigmatism and aberrations following lamellar wedge resection in cases with advanced pellucid marginal degeneration (PMD).

Materials and methods: Patients with advanced PMD whose visual acuity did not improve with glasses or contact lenses underwent lamellar crescentic wedge resection. Pre- and postoperative assessments at 3, 6, 12, and 24 months using Pentacam HR were conducted to identify changes in corrected visual acuity, corneal astigmatism, and higher-order aberrations (HOAs) following the procedure, and compared with a control group.

Results: Statistically significant postoperative improvements in corrected visual acuity were observed at 6 and …

Effects Of Repetitive Peripheral Magnetic Stimulation On Poststroke Ankle Spasticity: A Double-Blind Randomized Controlled Trial, Hüseyi̇n Oğuzhan Aslantaş, Şehi̇m Kutlay, Haydar Gök, Semra Özkan, Seçi̇lay Güneş, Ati̇lla Hali̇l Elhan

Turkish Journal of Medical Sciences

Background/aim: Repetitive peripheral magnetic stimulation (rPMS) is a noninvasive, painless therapy aimed at improving spasticity, with a proposed mechanism that involves neuromodulation through somatosensory and proprioceptive afferent stimulation. The present study evaluates the effectiveness of rPMS on ankle plantar flexor spasticity in participants with stroke.

Materials and methods: Included in this prospective, double-blind, randomized, sham-controlled study were 50 participants with poststroke ankle plantar flexor spasticity graded 1–3 according to Modified Ashworth Scale (MAS). Participants were randomized into rPMS (n = 25) and sham (n = 25) groups. All participated in a conventional rehabilitation program, while the rPMS group received 10 …

Comparison Of Ultrasound-Guided Serratus Posterior Superior Intercostal Plane Block And Thoracic Paravertebral Block For Postoperative Analgesia After Breast Surgery: A Prospective Randomized Noninferiority Trial, Mustafa Sirri Kotanoğlu, Musa Zengi̇n, Onur Küçük, Atakan Sezgi̇, İbrahi̇m Topcu, Aras Meti̇n, Zeynep Ersoy, Jüli̇de Ergi̇l

Turkish Journal of Medical Sciences

Background/aim: This noninferiority trial aimed to evaluate whether the serratus posterior superior intercostal plane block (SPSIPB) provides noninferior postoperative analgesia compared with the thoracic paravertebral block (TPVB) after unilateral mastectomy.

Materials and methods: This prospective, randomized, assessor-blinded, parallel-group noninferiority trial enrolled 60 female patients scheduled for elective unilateral mastectomy. Patients received either ultrasound-guided SPSIPB (n = 30) or TPVB (n = 30) with 30 mL of 0.25% bupivacaine before induction. The primary outcome was visual analogue scale (VAS) pain scores (0–100 mm) at rest and during coughing over 24 h. Noninferiority was assessed using the Hodges–Lehmann median difference with 95% …

Bridging The Methodological Gap In Multitrauma Literature: A Competency-Based Educational Framework And Clinical Appraisal Filter, Şaki̇r Hakan Aksu, Burcu Doğan, Merve Yazla

Turkish Journal of Medical Sciences

Background/aim: The statistical complexity of contemporary multitrauma literature has increased considerably in recent years, which may pose challenges for clinicians seeking to interpret high-impact research and apply evidence-based practices. Characterizing this methodological landscape and exploring education-oriented approaches may help to improve the interpretability of the literature and support informed clinical decision-making.

Materials and methods: A cross-sectional analysis was conducted on the 100 most-cited multitrauma studies published in Science Citation Index Expanded journals indexed in the Web of Science database between January 2018 and November 2025. The statistical methods used in each article were categorized into the three competency levels of …

Clinical Outcomes Of Injectable And Conventional Pulmonary Valve Replacement In Severe Pulmonary Regurgitation, Sercan Tak, Murat Koç, Ali̇ Kutsal, Vehbi̇ Doğan

Turkish Journal of Medical Sciences

Background/aim: Pulmonary regurgitation following tetralogy of Fallot repair is a common long-term complication requiring pulmonary valve replacement. Injectable bioprosthetic valves offer a less invasive alternative to conventional surgical replacement, but comparative data in pediatric populations remain limited. This study aimed to evaluate short-term and long-term clinical outcomes of injectable pulmonary valve replacement and conventional pulmonary valve replacement in pediatric patients with severe pulmonary regurgitation following tetralogy of Fallot repair.

Materials and methods: This retrospective study included 22 pediatric patients who underwent pulmonary valve replacement. Patients were divided into injectable (n = 9) and conventional (n = 13) groups based on …

Omega-3–Rich Fish Oil Lipid Emulsions Significantly Prevent Sepsis-Driven Mesenteric Hypoperfusion And Multi-Organ Injury In Murine Models, Gökşen Öz, Esi̇n Özçelebi̇, Ayşe Yeşi̇m Göçmen, Cenk Sükmensüer, Selma Yildirim, Arzu Topeli̇, Alper Bektaş İski̇t

Turkish Journal of Medical Sciences

Background/aim: Parenteral feeding is used in critically ill patients when enteral nutrition is inadequate or intolerable, and the gastrointestinal tract is not functioning properly. Lipid emulsions play a major role in parenteral nutrition because they supply necessary fatty acids and a high-calorie density. We investigated the effects of parenteral lipid emulsions on mesenteric perfusion, inflammation-induced oxidation, and organ damage in lipopolysaccharide-induced mice endotoxemia model.

Materials and methods: In septic mice, organ damage induced by lipopolysaccharide was assessed by histopathology and biochemical examination. Additionally, an ultrasonic blood flowmeter was used to measure the impact of lipid emulsions on mesenteric blood flow. …

Vnotes High Uterosacral Ligament Suspension Versus Laparoscopic Lateral Suspension In The Management Of Vaginal Vault Prolapse: Initial Experience In A Single Tertiary Center, Ramazan Adan, Fati̇h Şahi̇n, Ulya Üskent, Mehmet Gökhan Çulha, Arzu Bi̇lge Teki̇n

Turkish Journal of Medical Sciences

Background/aim: The optimal technique for vaginal vault prolapse correction has yet to be identified. This study aimed to evaluate the anatomic and functional outcomes of women who underwent vaginal natural orifice transluminal endoscopic high uterosacral ligament suspension (vNOTES HUSLS) or laparoscopic lateral suspension (LLS).

Materials and methods: This retrospective study included symptomatic women with stage ≥2 vault prolapse who underwent vNOTES HUSLS or LLS between January 2019 and June 2022 at a tertiary center. The surgical efficacy, postoperative outcomes, complication rates, and recurrence frequencies of these procedures were compared. The primary outcomes of the study included anatomical success, patient-reported (subjective) …

Letter To The Editor: Telemedicine Versus Conventional Care For Nonspecific Neck Pain: A Randomized Controlled Study, Gülsemi̇n Ertürk Çeli̇k

Turkish Journal of Medical Sciences

No abstract provided.

Impact Of Transforaminal Epidural Steroid Injection On Pain, Disability, And Kinesiophobia In Lumbar Disc Herniation With Radicular Pain, Hande Ece Öz, Rumeysa Çeti̇nkaya Bulutoğlu, Furkan Çeti̇n, Ezgi̇ Can, Alp Eren Çelenli̇oğlu, Ender Si̇r

Turkish Journal of Medical Sciences

Background/aim: The aim was to evaluate the effect of single-level transforaminal epidural steroid injection (TFESI) on kinesiophobia (KP) in patients with lumbar radicular pain (RP) caused by single-root, single-level lumbar disc herniation (LDH).

Materials and methods: A total of 63 patients diagnosed with unilateral single-level radicular pain due to LDH and treated with single-level TFESI were included. The Numeric Rating Scale (NRS), modified Oswestry Disability Index (MODI), Tampa Scale of Kinesiophobia (TSK), and Neuropathic pain (NP)-Douleur Neuropathique 4 Questionnaire (DN4) were used before the procedure and at 3 weeks and 3 months postoperatively.

Results: At baseline, 76.19% (n = 48) …

Impact Of Race-Based And Race-Free Ckd-Epi Equations On Estimated Glomerular Filtration Rate In A Multicenter Retrospective Cohort Of Autosomal Dominant Polycystic Kidney Disease, Özgür Akin Oto, Abdulmeci̇t Yildiz, İsmai̇l Koçyi̇ği̇t, Hali̇l Yazici, Sai̇de Eli̇f Güllülü Boz, Yi̇ği̇t Kurtuluş, Alparslan Demi̇ray, Müge Doksan, Vafa Suleymanova, Ece Ük, Alper Akin, Bahar Bastani, John C. Edwards, Krista Leigh Lentine, Yaşar Kerem Çalişkan

Turkish Journal of Medical Sciences

Background/aim: The 2021 revision of the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation, which eliminates race-based coefficients, may significantly influence disease staging and treatment in autosomal dominant polycystic kidney disease (ADPKD). This study was designed to evaluate the impact of the 2021 race-free CKD-EPI equation on estimated glomerular filtration rate (eGFR) and chronic kidney disease (CKD) staging in a multi-ethnic ADPKD population.

Materials and methods: In this multicenter, retrospective cohort study, 597 ADPKD patients were evaluated, including 515 self-identified as Caucasian and 82 as African-American. eGFR values at baseline and final follow-up were calculated using both the 2009 and 2021 …

Preliminary Population Genetic Analysis Of 12 X-Str Loci In A Sample From Türkiye: Allele Frequencies, Haplotype Diversity, And Linkage Disequilibrium​, Hizir Asliyüksek, Esra Güzel Tanoğlu, Abdulkadi̇r Can, Muhammed Fevzi̇ Esen, Yusuf Atan

Turkish Journal of Medical Sciences

Background/aim: X-chromosomal short tandem repeats (X-STRs) are informative genetic markers in kinship testing and specific forensic contexts, particularly when standard autosomal approaches are less informative. This study aimed to provide preliminary allele frequency, haplotype diversity, and linkage disequilibrium (LD) data for 12 X-STR loci in a sample from Türkiye.

Materials and methods: A total of 136 unrelated individuals from Türkiye were genotyped for 12 X-STR loci. Inferential analyses of X-linked loci require diploid genotypes; therefore, allele frequencies, Hardy–Weinberg equilibrium (HWE), LD, and regional comparisons were based primarily on female samples (n = 115), whereas male haplotypes (n = 21) were …

Pediatric Mr Cholangiopancreatography: Comparison Of 3d Fast Spin-Echo And Single-Shot Fast Spin-Echo Thick-Slab Techniques For Pancreaticobiliary Anatomy, Seda Kaynak Şahap, Suat Fi̇toz

Turkish Journal of Medical Sciences

Background/aim: This study compared thick-slab and three-dimensional (3D) T2-weighted magnetic resonance cholangiopancreatography (MRCP) sequences in pediatric patients with respect to image quality and visualization of the pancreaticobiliary anatomy.

Materials and methods: The MRCP examinations of 62 pediatric patients evaluated for suspected pancreaticobiliary pathology were retrospectively reviewed, comprising a total of 69 studies. Thick-slab single-shot fast spin-echo and 3D fast spin-echo MRCP sequences were compared. The visualization of pancreaticobiliary structures was assessed using a qualitative visual scoring system. Image quality was graded as good, moderate, poor, or nondiagnostic. Biliary anatomical variations were also evaluated. Statistical analysis was performed using appropriate nonparametric …

Postoperative Normocalcemic Hyperparathyroidism: A Comprehensive Analysis Of 510 Cases, Alparslan Ertenli̇ce, İbrahi̇m Kilinç, Mustafa Oruç

Turkish Journal of Medical Sciences

Background/aim: Postoperative normocalcemic hyperparathyroidism (NC-HPT) is defined as elevated parathyroid hormone (PTH) levels despite normal calcium levels after parathyroidectomy for primary hyperparathyroidism (PHPT). This study investigates the demographic, biochemical, and histopathological factors associated with NC-HPT in a large patient cohort and presents the follow-up outcomes.

Materials and methods: The initial study sample included 571 patients who underwent surgery for PHPT between January 2018 and January 2024, 510 of whom were analyzed retrospectively after the application of the exclusion criteria. Preoperative and postoperative biochemical parameters, bone mineral density, pathological findings, and follow-up data were evaluated. NC-HPT was defined as postoperative PTH …

A Caveat Regarding The Unfolding Argument: Implications Of Plasticity, Viknas N. O'Reilly-Shah, Alessandro Maria Selvitella, Aaron Schurger

Psychology Faculty Articles and Research

The unfolding argument in the neuroscience of consciousness posits that causal structure cannot account for consciousness because any recurrent neural network (RNN) can be “unfolded” into a functionally equivalent feedforward neural network (FNN) with identical input–output behavior. Subsequent debate has focused on dynamical properties and philosophy of science critiques. We examine a boundary condition on the unfolding argument for RNN systems with rapid plasticity in their connection weights. We demonstrate through rigorous mathematical proofs that rapid plasticity negates the functional equivalence between the RNN and the FNN. Our proofs address history-dependent plasticity, dynamical systems analysis, information-theoretic considerations, perturbational stability, complexity …

Autophagic Flux Blockade Under Hypocapnia Reveals Co2-Sensitive Regulation Of Autophagy-Lysosome Homeostasis, Naghmana Ashraf, Zhen Sun, Jeanine L Van Nostrand

Faculty, Staff and Students Publications

Hypocapnia, a reduction in partial pressure of carbon dioxide (CO2), commonly occurs in clinical contexts such as mechanical ventilation, panic disorder, and brain injury, yet its impact on cellular homeostasis remains poorly understood. Given the central role of autophagy in stress adaptation, we investigated how low CO2 influences autophagic flux and lysosomal function. We found that hypocapnia induces autophagosome accumulation while impairing cargo degradation, indicating a blockade in autophagic flux. This response was accompanied by increased lysosome biogenesis but, paradoxically, reduced autophagosome-lysosome fusion and lysosomal proteolytic activity. Mechanistically, hypocapnia promoted TFE3 dephosphorylation and nuclear translocation, driving transcriptional activation of lysosomal …

Deciphering Small Sequence Differences In T Cell Receptor-Antigen Pairing, Yi Han, Yuqiu Yang, James Zhu, Farjana J Fattah, Mitchell S Von Itzstein, Minying Zhang, Casey Bermack, Peixin Jiang, Shailbala Singh, Yanhua Tian, Yifei Hu, Yafang Deng, Xiongbin Kang, Donghan M Yang, Jialiang Liu, Yaming Xue, Chaoying Liang, Indu Raman, Chengsong Zhu, Olivia Xiao, Jonathan E Dowell, Jade Homsi, Sawsan Rashdan, Ke Pan, Shengjie Yang, Mary E Gwin, David Hsiehchen, Yvonne Gloria-Mccutchen, Fangjiang Wu, John V Heymach, Don Gibbons, Junzhou Huang, Chao Cheng, Jianjun Zhang, Cassian Yee, Alexandre Reuben, David E Gerber, Tao Wang

Faculty, Staff and Students Publications

T cells have important functions in development and disease processes through T cell receptor (TCR)-dependent activities. Many tools were developed to predict the binding between TCRs and antigens. However, one of the uncertainties is whether such tools can decipher how small changes in the TCRs or antigenic peptides contribute to binding. We develop a deep learning model, pMTnet-omni, which not only predicts the binding vs. non-binding of TCRs towards pMHCs, but also distinguishes the stronger vs. weaker binding of TCRs similar in sequence. We leverage this capability to interpret the biological rules that govern TCR-antigen pairing. This also enables pMTnet-omni …