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Articles 421 - 450 of 4649

Full-Text Articles in Anatomy

Adopting An International Human Rights Approach In The U.S. To Combat Sizeism And Related Racism And Sexism In Healthcare, Public Health Efforts, And Food Advertising Policy, Kristina Bergman, Denisse Cordova Montes May 2025

Adopting An International Human Rights Approach In The U.S. To Combat Sizeism And Related Racism And Sexism In Healthcare, Public Health Efforts, And Food Advertising Policy, Kristina Bergman, Denisse Cordova Montes

Journal of Food Law & Policy

Evidence of size stigma in U.S. food and health industries is overwhelming. Many policies affecting consumer and patient health and care look to patient Body Mass Index (BMI), a ratio of patient weight to height that anthropologists describe has roots in eugenics, scientific racism, and sexism, and that even the American Medical Association describes as being used for racist exclusion and not encompassing of sex-based differences. Many healthcare policies, public health messages, and food advertising strategies boast goals of reducing BMI in hopes of improving health status, but, in addition to having abhorrent origins, BMI has been shown to be …


Assessing Sleep Quality In A Preclinical Model Of Low Back Pain Through Novel Noninvasive Methods, Lydia C. Saltz May 2025

Assessing Sleep Quality In A Preclinical Model Of Low Back Pain Through Novel Noninvasive Methods, Lydia C. Saltz

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Chronic low back pain (LBP) has widespread negative impacts on quality of life. Current treatments for chronic LBP fail to provide long-term efficacy and motivate the need to understand key drivers of poor patient outcomes. Mounting evidence indicates that sleep disturbances and chronic LBP have a strong reciprocal relationship. Women may be particularly vulnerable to the negative impacts of the sleep-pain axis, exhibiting greater prevalence in both conditions. However, the relationship between sleep, pain, and sex remains understudied. Preclinical models can be used to parse out characteristic sleep features that degrade with pain, which can be further broken out by …


Developing A Small Molecule To Inhibit Hsf1 Expression In Cancer And Evaluating Natural Genetic Variation In Small Molecule Toxicity., Michaela Kendal Foley May 2025

Developing A Small Molecule To Inhibit Hsf1 Expression In Cancer And Evaluating Natural Genetic Variation In Small Molecule Toxicity., Michaela Kendal Foley

Theses and Dissertations

Each year cancer affects nearly 20 million people worldwide and genetic differences across populations can impact cancer onset and progression. Specifically, tumors with high levels of HSF1, the master regulator of the cytoprotective heat shock response (HSR), are correlated with poor patient outcomes in multiple cancers such as prostate, breast, and melanoma. Subsequently, the development of pharmacological inhibitors of HSF1 represents a promising strategy for anticancer therapeutics. Using a luciferase-based transcriptional reporter, two small molecule libraries were screened for inhibitors of HSF1 expression in human embryonic kidney cells, yielding ten compounds that decrease HSF1 expression. To identify if cancer lines …


Investigating Prefrontal Cortex Neuronal Signatures Of Opioid-Induced Risk-Taking Behavior, Cana Quave May 2025

Investigating Prefrontal Cortex Neuronal Signatures Of Opioid-Induced Risk-Taking Behavior, Cana Quave

Dissertations and Theses (Open Access)

Opioid use disorder occurs alongside impaired risk-related decision-making, but the underlying neural correlates are unclear. We developed an approach-avoidance conflict task using a modified conditioned place preference procedure to study neural signals of risky opioid seeking in the prefrontal cortex, a region implicated in executive decision-making. Following morphine conditioned place preference, rats underwent a conflict test in which fear-inducing cat odor was introduced in the previously drug-paired side of the apparatus. While the saline-exposed control group avoided cat odor, the morphine group included two subsets of rats that either maintained a preference for the paired side despite the presence of …


The Digital Glow: Effects Of Blue Light On Children And The Development Of A Children's Book To Raise Awareness On Eye Health, Mallory Easland May 2025

The Digital Glow: Effects Of Blue Light On Children And The Development Of A Children's Book To Raise Awareness On Eye Health, Mallory Easland

Honors Program: Senior Projects (Public)

As digital screen use continues to rise among children, concerns about the effects of blue light on eye health, sleep patterns, and overall well-being have grown. Research suggests that prolonged exposure to blue light can contribute to digital eye strain, disrupt circadian rhythms, and impact cognitive development. This thesis explores scientific literature on the biological effects of blue light, specifically on children, examining both the risks associated with excessive exposure and strategies for mitigating its impact.

In addition to conducting a comprehensive literature review, this project applies research findings to the creation of an educational children’s book aimed at promoting …


Gonadotropin-Releasing Hormone Ii And Its Receptor: Novel Regulators Of Semen Quality And Follicular Function In Swine, Caitlin Elizabeth Ross May 2025

Gonadotropin-Releasing Hormone Ii And Its Receptor: Novel Regulators Of Semen Quality And Follicular Function In Swine, Caitlin Elizabeth Ross

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Pigs are the only mammalian livestock species encoding functional proteins for the second form of gonadotropin-releasing hormone (GnRH-II) and its receptor (GnRHR-II). In the first study, GnRHR-II localized to developing germ cells and the connecting piece of ejaculated spermatozoa. Concurrently, GnRH-II was most abundantly produced in the testis compared with other reproductive tract organs and was present within seminal plasma. Moreover, treatment of extended semen with GnRHR-II analogues altered sperm motility, morphology, and kinematics. For remaining studies, we utilized a swine line with ubiquitous knockdown of GnRHR-II (GnRHR-II KD) developed in our laboratory. The second study demonstrated that circulating GnRH-II …


Successful Flexible Bronchoscopic Extraction Of A Dental Foreign Body Aspirated Into The Left Mainstem Bronchus, Alexys Bolden, Hayden Cooper, Lynnetta Payne, Mark Coomes, Mark Cooper Apr 2025

Successful Flexible Bronchoscopic Extraction Of A Dental Foreign Body Aspirated Into The Left Mainstem Bronchus, Alexys Bolden, Hayden Cooper, Lynnetta Payne, Mark Coomes, Mark Cooper

Marshall Journal of Medicine

Foreign body aspiration (FBA) is a potentially life-threatening emergency that commonly occurs in children but varies widely in clinical presentation. Rapid diagnosis and intervention are of the utmost importance to prevent complications such as airway obstruction, infection, and lung injury. While uncommon in adults, most encountered causes occur in the setting of intoxication, neuromuscular weakness, or iatrogenic dental work. Those with dental prostheses are especially susceptible due to the partially attached nature, rendering the risk of accidental dislodgement. This report discusses an uncommon case wherein an 82-year-old male aspirated a dental bridge into his left mainstem bronchus during routine dental …


From Molars To Bronchus; The Tale Of An Aspirated Dental Instrument, Yisroel Grabie, Sudeep Acharya, Fasih Sami Siddiqui, Gabriel A. Chavez Reyna, Michel Chalhoub Apr 2025

From Molars To Bronchus; The Tale Of An Aspirated Dental Instrument, Yisroel Grabie, Sudeep Acharya, Fasih Sami Siddiqui, Gabriel A. Chavez Reyna, Michel Chalhoub

HCA Healthcare Journal of Medicine

Background

Aspiration of dental instruments is a rare event that carries potentially serious complications when it occurs, especially in older patients, where protective reflexes are diminished. Clinical management may be difficult because of the risk of granulation tissue and different retrieval strategies according to the object’s characteristics. In this report, we describe the case of an 84-year-old man who aspirated a dental bur during a routine dental procedure, necessitating immediate intervention. Timely and precise management was essential to avert severe complications.

Case Presentation

During a routine dental procedure, an 84-year-old man aspirated a bud-shaped cross-cut carbide dental bur. Despite initial …


One Pulse At A Time: Exploring Spinal Cord Stimulator Anatomy To Enhance M1 Medical Education, Matthew Tufts, Sruthi Shriram, Arush Rao, Ariel Banks, Ragad Almsaddi, Gabrielle Abdelmessih, Varna Taranikanti Apr 2025

One Pulse At A Time: Exploring Spinal Cord Stimulator Anatomy To Enhance M1 Medical Education, Matthew Tufts, Sruthi Shriram, Arush Rao, Ariel Banks, Ragad Almsaddi, Gabrielle Abdelmessih, Varna Taranikanti

Posters

No abstract provided.


A Mean Field Theory For Pulse-Coupled Neural Oscillators Based On The Spike Time Response Curve, Carmen C. Canavier Apr 2025

A Mean Field Theory For Pulse-Coupled Neural Oscillators Based On The Spike Time Response Curve, Carmen C. Canavier

School of Medicine Faculty Publications

A mean field method for pulse-coupled oscillators with delays used a self-connected oscillator to represent a synchronous cluster of N - 1 oscillators and a single oscillator assumed to be perturbed from the cluster. A periodic train of biexponential conductance input was divided into a tonic and a phasic component representing the mean field input. A single cycle of the phasic conductance from the cluster was applied to the single oscillator embedded in the tonic component at different phases to measure the change in the cycle length in which the perturbation was initiated, that is, the first-order phase response curve …


Interactive Module For Medical Student Education In Type I Renal Tubular Acidosis, Het Patel, Emelie-Jo Nappo, Akshata Naik, Suzan Elsayed Apr 2025

Interactive Module For Medical Student Education In Type I Renal Tubular Acidosis, Het Patel, Emelie-Jo Nappo, Akshata Naik, Suzan Elsayed

Posters

No abstract provided.


Case Report And Review Of The Literature: Cholesterol Granuloma Masquerading As A Recurring Craniopharyngioma In A 66-Year-Old Male, Ethan Dimock, James Burmeister, Forrest Bohler, Adam Folbe Apr 2025

Case Report And Review Of The Literature: Cholesterol Granuloma Masquerading As A Recurring Craniopharyngioma In A 66-Year-Old Male, Ethan Dimock, James Burmeister, Forrest Bohler, Adam Folbe

Posters

No abstract provided.


Survey Of Medical Student Attitudes Regarding Uterine Transplant For Cisgender And Transgender Women, Oakland University William Beaumont School Of Medicine Medical School Medical Student, Deidre Hurse, Abram Brummett Apr 2025

Survey Of Medical Student Attitudes Regarding Uterine Transplant For Cisgender And Transgender Women, Oakland University William Beaumont School Of Medicine Medical School Medical Student, Deidre Hurse, Abram Brummett

Posters

No abstract provided.


Anatomy Podcast Presents Course Content In Novel Way, Anna Vanderlaan, Aishwarya Ramaswami, Jickssa Gemechu, Malli Barremkala Apr 2025

Anatomy Podcast Presents Course Content In Novel Way, Anna Vanderlaan, Aishwarya Ramaswami, Jickssa Gemechu, Malli Barremkala

Posters

No abstract provided.


Can Formative Assessments Pave The Way For Summative Success?: Correlating Anatomy Clinical Integration Laboratories With Examination Performance, Christopher Ramus, Stefanie Attardi Apr 2025

Can Formative Assessments Pave The Way For Summative Success?: Correlating Anatomy Clinical Integration Laboratories With Examination Performance, Christopher Ramus, Stefanie Attardi

Posters

No abstract provided.


Inequities In The Rehabilitation Process Of Musculoskeletal Injuries In Maine, Devon A. Grant Apr 2025

Inequities In The Rehabilitation Process Of Musculoskeletal Injuries In Maine, Devon A. Grant

Thinking Matters Symposium

Since 2016, Maine’s population has grown as a result of migration and a welcoming of refugees. Changes in state demographics influence the population’s and individuals’ social determinants of health (SDOH) (ie., “where people live, learn, work, and play”) and health literacy (ie., a person’s ability to find, understand, and use information to inform health-related decisions). This project aims to identify the health inequities or disparities throughout Southern Maine in the care of injuries to the lower extremity, such as the knee or ankle, as well as explore factors that influence the healthcare outcomes of athletes in surrounding communities. This study …


Forearm Muscle Alterations During Maximal Voluntary Isometric Contraction, Jacob Hutchison, Mark Timmons, Brandon Jones Apr 2025

Forearm Muscle Alterations During Maximal Voluntary Isometric Contraction, Jacob Hutchison, Mark Timmons, Brandon Jones

Appalachian Student Healthcare Research Review

Background: This study evaluated the relationship between grip strength and forearm skeletal muscle architecture during maximal grip contractions. Grip strength is a gauge for many different health related attributes, yet research on muscle architecture has been primarily completed in lower limb studies. This study aims to develop a better understanding of how biomechanical architecture of muscle operates to produce force during maximal isometric contractions of the forearms.

Methods: Sixteen individuals participated in this investigation (12 males, 4 females, mean age: 20.6 ± 2.5 years, mean height: 177.8 ± 8.3cm, mean weight: 79.2 ± 17.6Kg). Participants tested grip strength by performing …


The Role Of Occupational Therapy In Bladder And Bowel Management For Individuals With Spinal Cord Injuries: An Educational Video Series, Julia Ryan Apr 2025

The Role Of Occupational Therapy In Bladder And Bowel Management For Individuals With Spinal Cord Injuries: An Educational Video Series, Julia Ryan

Student Capstone Papers

Occupational therapy (OT) practitioners are uniquely positioned to support individuals with spinal cord injury (SCI) in developing effective bowel and bladder management (BBM) routines. However, most existing literature approaches BBM from a medical perspective, offering limited guidance on how to translate occupation-based strategies into OT practice. This lack of discipline-specific resources contributes to reduced confidence among generalist practitioners and hinders the consistent implementation of BBM interventions across inpatient and community settings. To address this gap, a nine-part educational video series was developed to enhance OT practitioners’ knowledge, clinical reasoning, and confidence in delivering BBM interventions for clients with SCI. The …


Diabetic Retinopathy: A Pathophysiological Discussion, Nathanael C. Nicholls Apr 2025

Diabetic Retinopathy: A Pathophysiological Discussion, Nathanael C. Nicholls

Senior Honors Theses

Diabetic retinopathy is a severe complication of diabetes that is capable of causing vision loss or blindness. As a result of hyperglycemia, the disease increases oxidative stress and activates biochemical processes such as the Hippo pathway and the complement system to cause significant damage to the retina. Overexpression of BTG1 and microRNA-183 enables activation of biochemical pathways that lead to negative effects on the retinal vascular endothelium including angiogenesis and inflammation. Conventional methods of diagnosis for diabetic retinopathy include fundus examination, nucleoside detection, and optical coherence tomography angiography. Photocoagulation and hormonal intravitreal injection are the most popular current treatments, while …


Robust Sex Determination In The Caenorhabditis Nigoni Germ Line, Jonathan P Harbin, Yongquan Shen, Shin-Yi Lin, Kevin Kemper, Eric S Haag, Erich M Schwarz, Ronald E Ellis Apr 2025

Robust Sex Determination In The Caenorhabditis Nigoni Germ Line, Jonathan P Harbin, Yongquan Shen, Shin-Yi Lin, Kevin Kemper, Eric S Haag, Erich M Schwarz, Ronald E Ellis

Rowan-Virtua School of Osteopathic Medicine Departmental Research

Sexual characteristics and reproductive systems are dynamic traits in many taxa, but the developmental modifications that allow change and innovation are largely unknown. A leading model for this process is the evolution of self-fertile hermaphrodites from male/female ancestors. However, these studies require direct analysis of sex-determination in male/female species, as well as in the hermaphroditic species that are related to them. In Caenorhabditis nematodes this has only become possible recently, with the discovery of new species. Here, we use gene editing to characterize major sex-determination genes in C. nigoni, a sister to the widely studied hermaphroditic species C. briggsae. These …


Gray Matter Morphology And Pain-Related Disability In Young Adults With Low Back Pain, Jo Armour Smith, Rongwen Tain, Isaac Chrisman, Kelli G. Sharp, Laura M. Glynn, Linda R. Van Dillen, Jesse V. Jacobs, Steven C. Cramer Apr 2025

Gray Matter Morphology And Pain-Related Disability In Young Adults With Low Back Pain, Jo Armour Smith, Rongwen Tain, Isaac Chrisman, Kelli G. Sharp, Laura M. Glynn, Linda R. Van Dillen, Jesse V. Jacobs, Steven C. Cramer

Physical Therapy Faculty Articles and Research

Structural neuroplasticity in the brain may contribute to the persistence of low back pain (LBP) symptoms and the disability associated with them. It is not known if structural adaptations are evident early in the lifespan in young adults with LBP. This study compared gray matter in cortical sensorimotor regions in young adults with and without persistent LBP and identified gray matter and clinical predictors of pain-related disability. Eighty-two individuals with and without a history of LBP participated. Peak and average gray matter density in cortical sensorimotor regions of interest was quantified using voxel-based morphometry. Pain-related disability, pain intensity, pain duration, …


Phosphotungstic Acid Staining To Visualize The Vagus Nerve Perineurium Using Micro-Ct, Aniruddha R. Upadhye, Jennifer Coleman, Michael W. Jenkins, David Wilson, Andrew J. Shoffstall Apr 2025

Phosphotungstic Acid Staining To Visualize The Vagus Nerve Perineurium Using Micro-Ct, Aniruddha R. Upadhye, Jennifer Coleman, Michael W. Jenkins, David Wilson, Andrew J. Shoffstall

Faculty Scholarship

Background and Purpose: Peripheral nerve stimulation is approved by the US Food and Drug Administration for treating various disorders, but it is often limited by side effects, highlighting the need for a clear understanding of fascicular and fiber organization to design selective therapies. Micro-CT imaging of contrast-stained nerves enables the visualization of tissue microstructures, such as the fascicular perineurium and vasculature. In this work, we evaluated phosphotungstic acid (PTA) as a contrast agent and assessed its compatibility with downstream histology. Methods: Human vagus nerve samples were collected from three embalmed cadavers and subjected to three different staining methods, followed by …


A Hypoxia Research-Driven Path Led To Identifying Neuroprotection Mediators: An Interview With Dr. Nicolas G. Bazan, Nicolas G. Bazan Apr 2025

A Hypoxia Research-Driven Path Led To Identifying Neuroprotection Mediators: An Interview With Dr. Nicolas G. Bazan, Nicolas G. Bazan

School of Medicine Faculty Publications

No abstract provided.


Using A Cadaveric Model Of Lumbar Scoliosis To Determine Optimal Patient Positioning For Reliable Bone Mineral Density Measures Using A Hologic Dexa Scanner, Caleb B. Schuring, Alexander H.K. Montoye Apr 2025

Using A Cadaveric Model Of Lumbar Scoliosis To Determine Optimal Patient Positioning For Reliable Bone Mineral Density Measures Using A Hologic Dexa Scanner, Caleb B. Schuring, Alexander H.K. Montoye

The Journal of Integrative Physiology

Introduction: Osteoporosis and osteopenia affect roughly 10 million and 43 million older adults, respectively, in the United States. The primary way to detect osteoporosis and osteopenia is through a bone mineral density (BMD) scan, as is often done using dual energy x-ray absorptiometry (DEXA). However, previous research shows DEXA to be unreliable when assessing BMD in individuals with lumbar scoliosis. The purpose of this study was to test the effect of spine orientation on the DEXA scanning bed on lumbar BMD measures, using a cadaver spine as a model. Methods: One female cadaver was dissected to the skeletal …


Complete Closure Of Chronic Ankle Ulcerations In The Presence Of Lymphadema With Use Of Adipose Stem Cell Injectable Allograft, A Case Report, Orlexia Thomas Dpm, Francois M. Lokenye Dpm, Jasmine Sheikh Bs, Lady Paula Dejesus Dpm, Facfas, Facpm, Dwsp Apr 2025

Complete Closure Of Chronic Ankle Ulcerations In The Presence Of Lymphadema With Use Of Adipose Stem Cell Injectable Allograft, A Case Report, Orlexia Thomas Dpm, Francois M. Lokenye Dpm, Jasmine Sheikh Bs, Lady Paula Dejesus Dpm, Facfas, Facpm, Dwsp

Posters

This case illustrates the promising role of adipose stem cell injectable allografts in the management of complex chronic wounds, particularly in patients presenting with lymphedema and fat pad atrophy.


Triangular Fibrocartilage Complex: An Anatomical And Medical Illustration Study., Hallie Tiburzi, Carlos A G Machado, Massimo S D'Antoni, R Shane Tubbs Apr 2025

Triangular Fibrocartilage Complex: An Anatomical And Medical Illustration Study., Hallie Tiburzi, Carlos A G Machado, Massimo S D'Antoni, R Shane Tubbs

Rowan-Virtua School of Osteopathic Medicine Departmental Research

Recent advances in small-joint arthroscopy and cutting-edge magnetic resonance imaging systems have enabled orthopedic surgeons to perform more complex repairs of the wrist. Such repairs can include those of the triangular fibrocartilage complex (TFCC) of the wrist that necessitates a reappraisal of its morphometry with special emphasis on the relationship between its articular disc (AD) and surrounding tissues. The TFCC AD is a fibrocartilaginous, biconcave structure located between the ulnar styloid process and the carpal bones of the wrist. We carefully dissected and measured the ADs of 58 wrists from 34 embalmed cadavers (20 females, 14 males) and fabricated three-dimensional …


Adipose Injectable Filler With Use Of Meshed Dermal Matrix And Porcine Urinary Bladder Matrix For The Management Of A Complex Achilles Wound, Francois M. Lokenye Dpm, Orlexia Thomas Dpm, Mariam Kamil Bs, Lady Paula Dejesus Dpm, Facfas, Facpm, Dwsp Apr 2025

Adipose Injectable Filler With Use Of Meshed Dermal Matrix And Porcine Urinary Bladder Matrix For The Management Of A Complex Achilles Wound, Francois M. Lokenye Dpm, Orlexia Thomas Dpm, Mariam Kamil Bs, Lady Paula Dejesus Dpm, Facfas, Facpm, Dwsp

Posters

Chronic Achilles wounds present a significant clinical challenge due to limited vascularity, high mechanical stress, and the complex anatomy of the posterior lower leg.

Regenerative medicine offers a promising alternative to traditional wound management through the use of advanced biologic materials.

This case highlights a novel approach utilizing a combination of adipose-derived injectable filler, acellular dermal matrix, and porcine urinary bladder matrix to enhance tissue regeneration, provide structural support, and promote wound healing.


Investigating Mercury Contamination In Urban Fish: Atomic Absorption Spectroscopy And Histological Analysis For Environmental And Human Health, Indy L. Cockrill, Ross Andrew Apr 2025

Investigating Mercury Contamination In Urban Fish: Atomic Absorption Spectroscopy And Histological Analysis For Environmental And Human Health, Indy L. Cockrill, Ross Andrew

SPARK Symposium Presentations

Mercury contamination in aquatic ecosystems is a pressing environmental and public health concern, particularly in urban areas where industrial runoff and wastewater contribute to heavy metal accumulation. This study investigates mercury presence in fish from Richland Creek in Nashville, TN, by analyzing histological changes in liver and muscle tissues. Mercury bioaccumulates in aquatic food chains, potentially leading to physiological damage in fish and posing health risks to humans who consume contaminated seafood. While prior research has established mercury’s toxic effects, there is a need for localized studies assessing its presence in urban waterways. The hope is to find histological abnormalities …


Brain Endothelial Cells As Phagocytes: Mechanisms And Implications, Rudy T. Chang, Mark J. Fisher, Rachita K. Sumbria Apr 2025

Brain Endothelial Cells As Phagocytes: Mechanisms And Implications, Rudy T. Chang, Mark J. Fisher, Rachita K. Sumbria

Pharmacy Faculty Articles and Research

Brain microvascular endothelial cells (BECs) lining the brain capillaries form the anatomical site of the blood-brain barrier (BBB), providing a highly selective barrier to support brain homeostasis and function. While the BBB acts as a barrier to immune cells and pathogens under normal conditions, BECs can facilitate their entry into the CNS via a phagocytosis-like mechanism. A similar process is now increasingly reported for a diverse set of cargos, resulting in the categorization of BECs as “non-professional” phagocytes and redefining the conventional view that these cells are functionally non-phagocytic. This review aims to summarize research demonstrating the capacity of BECs …


Investigating The Drug Response Of Pdac Cells To Pan-Kras Inhibitor, Jalyn De La Fuente, Yi Xu, Jun Liu, Angel Dominquez, Ava Sanchez, Pei Wang Apr 2025

Investigating The Drug Response Of Pdac Cells To Pan-Kras Inhibitor, Jalyn De La Fuente, Yi Xu, Jun Liu, Angel Dominquez, Ava Sanchez, Pei Wang

Posters - 2025

Pancreatic ductal adenocarcinoma (PDAC) is an exocrine pancreatic cancer. It is one of the most lethal types of cancer and is projected to become the second leading cause of cancer-related deaths by 20401 . One major challenge in treating PDAC is drug resistance and the lack of effective treatments. Oncogenic KRAS mutation and loss of function mutation in tumor suppressor genes including P16, TP53, and SMAD4 are found in most PDAC patients. It is unclear whether the different driver mutations can affect the tumor responses to chemo- and targeted therapy. Gemcitabine, a chemotherapy drug, is a cytotoxic agent that has …