Medical Physiology Commons^™

The Importance Of Serial 12-Lead Ecgs In The Prehospital Setting: A Case Of Transient St Elevation Myocardial Infarction (Tstemi), Zachary J. Blickley Nrp, Fp-C, Matthew E. Kent Nrp, Fp-C, Benjamin J. Lawner Do, Emt-P

Tower Health Research Day

No abstract provided.

Piriformis Syndrome With A Variant Presentation, Roberto Chuapoco, Ryan E. Linford

Annual Research Symposium

Piriformis syndrome has long been a diagnostic quandary due to its tendency to present as other nerve-related conditions. Piriformis syndrome is commonly caused by entrapment of the sciatic nerve as it travels through the greater sciatic foramen due to hypertrophy of the piriformis muscle. However, its constellation of symptoms, including radiating pain down the thigh, can easily be mistaken for lumbosacral radiculopathy. This case report aims to address the misdiagnosis of piriformis syndrome which has prolonged pain for many patients and increased the cost of medical care. It demonstrates a 76-year-old female with a confounding presentation of piriformis syndrome: buttock …

Change In Basic Pulmonary Function In Response To Altitude Change, Holly Radke, Mitchell Rush

Annual Research Symposium

Purpose: This study aims to determine if there is a lasting effect in lung function when an individual relocates from an area of low elevation to an area of high elevation.

Methods: Our study monitored changes in pulmonary function over time after individuals moved from a region of low elevation (1,000 feet above sea level or lower) to a higher elevation area (4,500 feet above sea level in Provo, Utah). We followed incoming students to Noorda College of Osteopathic Medicine from places of elevation lower than 1,000 feet. Spirometry was used to assess forced vital capacity (FVC) and peak expiratory …

Early Renal Denervation Attenuates Cardiac Dysfunction In Heart Failure With Preserved Ejection Fraction, Jake E. Doiron, Zhen Li, Xiaoman Yu, Kyle B. Lapenna, Heather Quiriarte, Timothy D. Allerton, Kashyap Koul, Andrew Malek, Sanjiv J. Shah, Thomas E. Sharp, Traci T. Goodchild, Daniel R. Kapusta, David J. Lefer

School of Graduate Studies Faculty Publications

BACKGROUND: The renal sympathetic nervous system modulates systemic blood pressure, cardiac performance, and renal function. Pathological increases in renal sympathetic nerve activity contribute to the pathogenesis of heart failure with preserved ejection fraction (HFpEF). We investigated the effects of renal sympathetic denervation performed at early or late stages of HFpEF progression. METHODS AND RESULTS: Male ZSF1 obese rats were subjected to radiofrequency renal denervation (RF-RDN) or sham procedure at either 8 weeks or 20 weeks of age and assessed for cardiovascular function, exercise capacity, and cardiorenal fibrosis. Renal norepinephrine and renal nerve tyrosine hydroxylase staining were performed to quantify denervation …

Effects Of Metformin On Glucose Metabolism And Mitochondrial Function In Patients With Obstructive Sleep Apnea: A Pilot Randomized Trial, Elizabeth R.M. Zunica, Elizabeth C. Heintz, Wagner S. Dantas, R. Caitlin Hebert, Ma Kayla Tanksley, Robbie A. Beyl, Edward C. Mader, John P. Kirwan, Christopher L. Axelrod, Prachi Singh

School of Medicine Faculty Publications

Obstructive sleep apnea (OSA) is associated with increased risk for diabetes, and standard treatment with positive airway pressure (PAP) device shows inconsistent effects on glucose metabolism. Metformin is known to treat and prevent diabetes, but its effects on skeletal muscle mitochondrial function are not completely understood. Here, we evaluate the effects of metformin on glucose metabolism and skeletal muscle mitochondrial function in patients with OSA. Sixteen adults with obesity (50.9 ± 6.7 years, BMI: 36.5 ± 2.9 kg/m2) and moderate-to-severe OSA were provided with PAP treatment and randomized to 3 months of placebo (n = 8) or metformin (n = …

Share Cannabidiol Exposure During Gestation Leads To Adverse Cardiac Outcomes Early In Postnatal Life In Male Rat Offspring., Daniel B. Hardy, Steven R. Laviolette, Kendrick Lee, David Rc Natale

Physiology and Pharmacology Publications

Introduction: Studies indicate that *7% of pregnant individuals in North America consume cannabis in pregnancy. Pre-clinical studies have established that maternal exposure to D9-tetrahydrocannabinol (THC; major psychoactive component in cannabis) leads to fetal growth restriction and impaired cardiac function in offspring. However, the effects of maternal exposure to cannabidiol (CBD; major non-euphoric constituent) on cardiac outcomes in offspring remain unknown. Therefore, our objective is to investigate the functional and underlying molecular impacts in the hearts of offspring exposed to CBD in pregnancy. Methods: Pregnant Wistar rats were exposed to either 3 or 30mg/kg CBD or vehicle control i.p. daily from …

Cannabidiol Exposure During Rat Pregnancy Leads To Labyrinth-Specific Vascular Defects In The Placenta And Reduced Fetal Growth, Daniel B. Hardy, David R C Natale, Kendrick Lee

Physiology and Pharmacology Publications

Introduction: Cannabis use is increasing among pregnant people, and cannabidiol (CBD), a constituent of cannabis, is often perceived as ‘‘natural’’ and ‘‘safe’’ as it is non-intoxicating. In utero, cannabis exposure is associated with negative health outcomes, including fetal growth restriction (FGR). The placenta supplies oxygen and nutrients to the fetus, and alterations in placental development can lead to FGR. While there has been some investigation into the effects of D9-THC, there has been limited investigation into the impacts of in utero gestational CBD exposure on the placenta. Methods: This study used histological and transcriptomic analysis of embryonic day (E)19.5 rat …

Ogilvie's Syndrome: Acute Colonic Pseudoobstruction. A Review For Residents., Tyler Bayliss, Caleb Clark, Errington C. Thompson

Marshall Journal of Medicine

Ogilvie's syndrome (acute colonic pseudoobstruction) was first described in 1948. Acute colonic pseudoobstruction can occur in a variety of clinical settings, including postsurgical, obstetrics, pelvic surgery, critical care and sepsis. Clinicians need to recognize the syndrome early. Colonic distention without evidence of obstruction can be seen on plain films of the abdomen or CT scan. Successful therapies, including bowel rest, neostigmine and colonoscopic decompression, have been used. Avoiding respiratory compromise from abdominal distention and colonic perforation of the primary goals of treatment. Surgical intervention should be reserved for patients who are refractory to medical treatment or develops signs and symptoms …

Formulation Of Preservation Solutions For Model Generation With In Vivo Tissue Morphology, Holly Pickett

The Journal of Purdue Undergraduate Research

No abstract provided.

Activation Of Renal Epithelial Na+ Channels (Enac) In Infants With Congenital Heart Disease, Laura Ortmann, Shyam Sundar Nandi, Yulong Li, Hong Zheng, Kaushik K. Patel

Journal Articles: Cellular & Integrative Physiology

INTRODUCTION: This study was designed to measure the concentration and activity of urinary proteases that activate renal epithelial sodium channel (ENaC) mediated Na

METHODS: Urine samples from infants undergoing cardiac surgery were collected at three time points: T1) pre-operatively, T2) 6-8 h after surgery, and T3) 24 h after diuretics. Urine was collected from five heathy infant controls. The urine was tested for four proteases and whole-cell patch-clamp testing was conducted in renal collecting duct M-1 cells to test whether patient urine increased Na

RESULTS: Heavy chain of plasminogen, furin, and prostasin were significantly higher in cardiac patients prior to …

Innate And Adaptive Immune System Consequences Of Post-Traumatic Stress Disorder, Tatlock H. Lauten, Tamara Natour, Adam J. Case

Journal Articles: Cellular & Integrative Physiology

In the field of psychiatry, biological markers are rarely, if ever, used in the diagnosis of mental health disorders. Clinicians rely primarily on patient histories and behavioral symptoms to identify specific psychopathologies, which makes diagnosis highly subjective. Moreover, therapies for mental health disorders are aimed specifically at attenuating behavioral manifestations, which overlooks the pathophysiological indices of the disease. This is highly evident in posttraumatic stress disorder (PTSD) where inflammation and immune system perturbations are becoming increasingly described. Further, patients with PTSD possess significantly elevated risks of developing comorbid inflammatory diseases such as autoimmune and cardiovascular diseases, which are likely linked …

Validating Osteological Correlates For The Hepatic Piston In The American Alligator (Alligator Mississippiensis), Clinton A. Grand Pre, William Thielicke, Raul E. Diaz, Brandon P. Hedrick, Ruth M. Elsey, Emma R. Schachner

School of Graduate Studies Faculty Publications

Unlike the majority of sauropsids, which breathe primarily through costal and abdominal muscle contractions, extant crocodilians have evolved the hepatic piston pump, a unique additional ventilatory mechanism powered by the diaphragmaticus muscle. This muscle originates from the bony pelvis, wrapping around the abdominal viscera, extending cranially to the liver. The liver then attaches to the caudal margin of the lungs, resulting in a sub-fusiform morphology for the entire ‘‘pulmo-hepatic-diaphragmatic’’ structure. When the diaphragmaticus muscle contracts during inspiration, the liver is pulled caudally, lowering pressure in the thoracolumbar cavity, and inflating the lungs. It has been established that the hepatic piston …

Editorial; Biophysics Approaches To Investigate Multi-Organ Alcohol-Induced Damage, Janos Paloczi, Youngchan Kim

School of Graduate Studies Faculty Publications

No abstract provided.

Abstinence Restores Cardiac Function In Mice With Established Alcohol-Induced Cardiomyopathy, Joshua M. Edavettal, Nicholas R. Harris, Sarah E. Cohen, Janos Paloczi, Bysani Chandrasekar, Jason D. Gardner

School of Graduate Studies Faculty Publications

Alcohol-induced cardiomyopathy (ACM) has a poor prognosis with up to a 50% chance of death within four years of diagnosis. There are limited studies investigating the potential of abstinence for promoting repair after alcohol-induced cardiac damage, particularly in a controlled preclinical study design. Here, we developed an exposure protocol that led to significant decreases in cardiac function in C57BL6/J mice within 30 days; dP/dt max decreased in the mice fed alcohol for 30 days (8054 ± 664.5 mmHg/s compared to control mice: 11,188 ± 724.2 mmHg/s, p < 0.01), and the dP/dt min decreased, as well (−7711 ± 561 mmHg/s compared to control mice: −10,147 ± 448.2 mmHg/s, p < 0.01). Quantitative PCR was used to investigate inflammatory and fibrotic biomarkers, while histology was used to depict overt changes in cardiac fibrosis. We observed a complete recovery of function after abstinence (dP/dt max increased from 8054 ± 664 mmHg/s at 30 days to 11,967 ± 449 mmHg/s after abstinence, p < 0.01); further, both inflammatory and fibrotic biomarkers decreased after abstinence. These results lay the groundwork for future investigation of the molecular mechanisms underlying recovery from alcohol-induced damage in the heart.

Using Noninvasive Calibrated Cuff Plethysmography To Observe The Effects Of Cold-Water Immersion On Arterial Compliance, Rita M. Grigorian

Biomedical Engineering: Graduate Reports and Projects

As the prevalence of cardiovascular diseases continues to exponentially grow in populations across the globe, the necessity of determining underlying factors, effective methods of diagnoses, and universally available preventive measures also grows. Early detection of endothelial dysfunction, a proven precursor of cardiovascular diseases, can be extremely impactful in encouraging preventative measures and early intervention before medical conditions become chronic. In recent years, ice plunging, a form of cryotherapy involving full body immersion in cold water, has gained popularity within circles of fitness and health practitioners, gaining the interest of people of all backgrounds. Certain parallels observed between the human physiological …

Prefrontal Cortex Glutamatergic Adaptations In A Mouse Model Of Alcohol Use Disorder, Mahum T. Siddiqi, Dhruba Podder, Amanda R. Pahng, Alexandria C. Athanason, Tali Nadav, Chelsea Cates-Gatto, Max Kreifeldt, Candice Contet, Amanda J. Roberts, Scott Edwards, Marisa Roberto, Florence P. Varodayan

School of Graduate Studies Faculty Publications

Alcohol use disorder (AUD) produces cognitive deficits, indicating a shift in prefrontal cortex (PFC) function. PFC glutamate neurotransmission is mostly mediated by α-amino-3‑hydroxy-5-methyl-4-isoxazolepropionic acid-type ionotropic receptors (AMPARs); however preclinical studies have mostly focused on other receptor subtypes. Here we examined the impact of early withdrawal from chronic ethanol on AMPAR function in the mouse medial PFC (mPFC). Dependent male C57BL/6J mice were generated using the chronic intermittent ethanol vapor-two bottle choice (CIE-2BC) paradigm. Non-dependent mice had access to water and ethanol bottles but did not receive ethanol vapor. Naïve mice had no ethanol exposure. We used patch-clamp electrophysiology to measure …

Human Alcohol-Microbiota Mice Have Increased Susceptibility To Bacterial Pneumonia, Kelly C. Cunningham, Deandra R. Smith, Daniel N. Villageliú, Christi M. Ellis, Amanda E. Ramer-Tait, Jeffrey D. Price, Todd A. Wyatt, Daren L. Knoell, Mystera M. Samuelson, Patricia E. Molina, David A. Welsh, Derrick R. Samuelson

School of Medicine Faculty Publications

Preclinical studies have shown that chronic alcohol abuse leads to alterations in the gastrointestinal microbiota that are associated with behavior changes, physiological alterations, and immunological effects. However, such studies have been limited in their ability to evaluate the direct effects of alcohol-associated dysbiosis. To address this, we developed a humanized alcohol-microbiota mouse model to systematically evaluate the immunological effects of chronic alcohol abuse mediated by intestinal dysbiosis. Germ-free mice were colonized with human fecal microbiota from individuals with high and low Alcohol Use Disorders Identification Test (AUDIT) scores and bred to produce human alcohol-associated microbiota or human control-microbiota F1 progenies. …

Impact Of Strokes: The Burden Of Care, Post-Cva Fatigue & Caregiver Role Strain, Tanya G. Schlemmer

Nursing Faculty Publications and Presentations

Strokes and cerebral vascular accidents (CVAs) and related disease events are an unfortunate circumstance that inflicts individuals around the world and impacts people every day as individuals and their caregivers. The consequences of these strokes or CVA events are life-changing for all those involved. As a result of long-term disability related to strokes, the caregiver may undergo many emotional, psychological, and physical factors that impact their daily lives. There is a relatively short period of time to react to the necessary change and as a result there may be differences in coping associated with these unexpected health circumstances. Many stoke …

Mediation Of Bmi On 25-Hydroxyvitamin D Levels In U.S. Adults With Sugar-Sweetened Beverages Consumption, Wei Ting Lin, Gabrielle V. Gonzalez, Yu Hsiang Kao, Hui Yi Lin, Mirandy S. Li, David W. Seal, Chien Hung Lee, Chih Yang Hu, Lei Shih Chen, Tung Sung Tseng

School of Public Health Faculty Publications

Body mass index (BMI) as well as sugar-sweetened beverages (SSB) has been suggested to independently decrease 25-hydroxyvitamin D (25(OH)D). However, the relationship between SSB, BMI, and 25(OH)D is uncertain. This study aimed to investigate the potential mediating role of BMI in the association between SSB intake and 25(OH)D. A total of 4505 representative U.S. adults aged above 20 years and without liver conditions were selected from the 2013–2014 NHANES. All analyses were performed under survey modules with appropriate sampling weights. The prevalence of 25(OH)D insufficiency and deficiency was 37.8% and 24.1% in U.S. adults, respectively. Compared with non-SSB consumers, an …

Peran Penting Inflamasom Nlrp3 Pada Aterosklerosis, Dewi Sukmawati

Jurnal Penyakit Dalam Indonesia

Cardiovascular diseases (CVDs) still contribute as the main cause of mortality and premature mortality worldwide. In Indonesia, CVDs contribute to 35% of the main cause of death in non-communicable diseases followed by diabetes at 6%. The ischemic heart disease and acute ischemic stroke is the main cause of death in Indonesia due to atherosclerosis. Atherosclerosis is a multifactorial cause, with chronic inflammation which causes myocardial infarction and acute ischemic stroke. Research demonstrated that one of the underlying mechanisms of atherosclerosis is inflammation. The current research suggested that inflammation could activate a complex of cytosol proteins, namely nucleotide-binding oligomerization domain-like receptor …