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Articles 1 - 30 of 150
Full-Text Articles in Anatomy
Ontogenetic Scaling Patterns And Functional Anatomy Of The Pelvic Limb Musculature In Emus (Dromaius Novaehollandiae), Luis P. Lamas, Russell P. Main, John R. Hutchinson
Ontogenetic Scaling Patterns And Functional Anatomy Of The Pelvic Limb Musculature In Emus (Dromaius Novaehollandiae), Luis P. Lamas, Russell P. Main, John R. Hutchinson
Department of Basic Medical Sciences Faculty Publications
Emus (Dromaius novaehollandiae) are exclusively terrestrial, bipedal and cursorial ratites with some similar biomechanical characteristics to humans. Their growth rates are impressive, as their body mass increases eighty-fold from hatching to adulthood whilst maintaining the same mode of locomotion throughout life. These ontogenetic characteristics stimulate biomechanical questions about the strategies that allow emus to cope with their rapid growth and locomotion, which can be partly addressed via scaling (allometric) analysis of morphology. In this study we have collected pelvic limb anatomical data (muscle architecture, tendon length, tendon mass and bone lengths) and calculated muscle physiological cross sectional area …
Subcellular Metabolite And Lipid Analysis Of Xenopus Laevis Eggs By Laesi Mass Spectrometry, Bindesh Shrestha, Prabhakar Sripadi, Brent R. Reschke, Holly D. Henderson, Matthew J. Powell, Sally Ann Moody, Akos Vertes
Subcellular Metabolite And Lipid Analysis Of Xenopus Laevis Eggs By Laesi Mass Spectrometry, Bindesh Shrestha, Prabhakar Sripadi, Brent R. Reschke, Holly D. Henderson, Matthew J. Powell, Sally Ann Moody, Akos Vertes
Anatomy and Regenerative Biology Faculty Publications
Xenopus laevis eggs are used as a biological model system for studying fertilization and early embryonic development in vertebrates. Most methods used for their molecular analysis require elaborate sample preparation including separate protocols for the water soluble and lipid components. In this study, laser ablation electrospray ionization (LAESI), an ambient ionization technique, was used for direct mass spectrometric analysis of X. laevis eggs and early stage embryos up to five cleavage cycles. Single unfertilized and fertilized eggs, their animal and vegetal poles, and embryos through the 32-cell stage were analyzed. Fifty two small metabolite ions, including glutathione, GABA and amino …
Cyclooxygenase-2, Prostaglandin E2, And Prostanoid Receptor Ep2 In Fluid Flow Shear Stress-Mediated Injury In The Solitary Kidney., Tarak Srivastava, Uri S. Alon, Patricia A. Cudmore, Belal Tarakji, Alexander Kats, Robert E. Garola, R Scott Duncan, Ellen T. Mccarthy, Ram Sharma, Mark L. Johnson, Lynda F. Bonewald, Ashraf El-Meanawy, Virginia J. Savin, Mukut Sharma
Cyclooxygenase-2, Prostaglandin E2, And Prostanoid Receptor Ep2 In Fluid Flow Shear Stress-Mediated Injury In The Solitary Kidney., Tarak Srivastava, Uri S. Alon, Patricia A. Cudmore, Belal Tarakji, Alexander Kats, Robert E. Garola, R Scott Duncan, Ellen T. Mccarthy, Ram Sharma, Mark L. Johnson, Lynda F. Bonewald, Ashraf El-Meanawy, Virginia J. Savin, Mukut Sharma
Manuscripts, Articles, Book Chapters and Other Papers
Hyperfiltration subjects podocytes to increased tensile stress and fluid flow shear stress (FFSS). We showed a 1.5- to 2.0-fold increase in FFSS in uninephrectomized animals and altered podocyte actin cytoskeleton and increased synthesis of prostaglandin E2 (PGE2) following in vitro application of FFSS. We hypothesized that increased FFSS mediates cellular changes through specific receptors of PGE2. Presently, we studied the effect of FFSS on cultured podocytes and decapsulated isolated glomeruli in vitro, and on solitary kidney in uninephrectomized sv129 mice. In cultured podocytes, FFSS resulted in increased gene and protein expression of cyclooxygenase (COX)-2 but not COX-1, prostanoid receptor EP2 …
The Effect Of Chronic Sleep Deprivation On Tumor Necrosis Factor Alpha And Bone Health In Peri-Menopausal Rats, Megan Robertson, Derek Booth, Erin Wainwright, Cody Arbuckle, Frank Frisch
The Effect Of Chronic Sleep Deprivation On Tumor Necrosis Factor Alpha And Bone Health In Peri-Menopausal Rats, Megan Robertson, Derek Booth, Erin Wainwright, Cody Arbuckle, Frank Frisch
Student Scholar Symposium Abstracts and Posters
Post-menopausal osteoporosis is a common syndrome in the United States. The cessation of estrogen signaling coupled with the production of pro-inflammatory cytokines from sleep deprivation leads to an even greater risk of post-menopausal osteoporosis by creating an imbalance between osteoblasts and osteoclasts. With estrogen no longer present to regulate the concentration of osteoclasts and pro-inflammatory cytokines increasing production of osteoclasts, bone is degraded at a faster rate than it is formed. One of the most common treatments for osteoporosis is Zolendronate (a nitrogenous bisphosphonate), which decreases the number of osteoclasts in bone. This preliminary study looked at the effects on …
Rare Presentation Of Pancreatitis Secondary To Intussusception Of Duodenal Duplication Cyst, A Pediatric Case Report, Valentina Shakhnovich, Jennifer Colombo, Amita A. Desai, Shawn D. St Peter
Rare Presentation Of Pancreatitis Secondary To Intussusception Of Duodenal Duplication Cyst, A Pediatric Case Report, Valentina Shakhnovich, Jennifer Colombo, Amita A. Desai, Shawn D. St Peter
Manuscripts, Articles, Book Chapters and Other Papers
No abstract provided.
Induction Of Differentiation Of Dental Pulp-Derived Mesenchymal Stem Cells (Dpsc), Aubrey Young
Induction Of Differentiation Of Dental Pulp-Derived Mesenchymal Stem Cells (Dpsc), Aubrey Young
UNLV Theses, Dissertations, Professional Papers, and Capstones
Mesenchymal stem cells are derived from a variety of human tissues and are being bioengineered and studied for possible uses in the advancement of medicine. Recent efforts are being focused on Dental Pulp Stem Cells (DPSC's) due to the accessibility of this tissue. Many factors influence DPSC quality and quantity, including the specific methods used to isolate, collect, concentrate, and store these isolates once they are removed. Ancillary factors, such as the choice of media, the selection of early versus late passage cells, and cryopreservation techniques may also influence the differentiation potential and proliferative capacity of DPSC isolates.
The objective …
Boundary Contour Based Surface Representation., Yong Su
Boundary Contour Based Surface Representation., Yong Su
Electronic Theses and Dissertations
We receive most information about our surrounding space and objects through the eyes. To reconstruct the 3D space and objects in the visual system from the 2D retinal images, surface representation must be a critical intermediate stage in the visual processing stream. It is hypothesized in the dissertation that the visual system represents textured surface by a border-to-interior strategy: boundary contours would be encoded first and then border-ownership assignments would be resolved. This process would solve the related problems such as figure-ground segregation, surface depth relationship, occlusion, transparency, etc. As a result, the boundary contours of the surfaces would be …
Signaling Mechanisms In Regenerative Myogenesis., Sajedah M. Hindi 1986-
Signaling Mechanisms In Regenerative Myogenesis., Sajedah M. Hindi 1986-
Electronic Theses and Dissertations
Skeletal muscle constitutes a highly plastic and malleable tissue that rapidly and profoundly adapts to various environmental and physiological stimuli. This response takes place by means of regulated signaling transduction which elicits changes in gene expression, biochemical, and metabolic properties. Adult muscle is composed by alignment of multinucleated, post mitotic muscle fibers formed during embryonic and neonatal development. Residing in the niche of mature muscle fibers is a small population of undifferentiated muscle progenitors termed satellite cells. Satellite cells are muscle stem cells that carry out regenerative response in adult myofibers. Coordinated signaling emitting from terminally differentiated muscle fibers and …
Effects Of Step Training On The Kidneys Following Spinal Cord Injury In Rats., Pradeepa Poudyal
Effects Of Step Training On The Kidneys Following Spinal Cord Injury In Rats., Pradeepa Poudyal
Electronic Theses and Dissertations
Detrusor-sphincter dyssynergia after chronic spinal cord injury (SCI) leads to over-distention, high bladder pressures and vesico-ureteric reflux into the kidney, resulting in repeated infections and pyelonephritis. Given the importance/limited knowledge of SCI effects on the upper urinary tract, this study assessed expression of two proteins in the kidneys of contused (T9) male rats relative to controls that are indicative of tissue stress/damage (TGFβ, CD11b). The impact of two therapeutic rehabilitation strategies, 60 minutes of step training and general exercise, was then assessed on these protein levels relative to non-trained SCI controls, plus the effectiveness of a shorter training duration (30 …
Gene Electro Transfer Of Plasmid Encoding Vascular Endothelial Growth Factor For Enhanced Expression And Perfusion In The Ischemic Swine Heart, Barbara Y. Hargrave, Robert Strange Jr., Sagar Navare, Michael Stratton, Niculina Burcus, Len Murray, Cathryn Lundberg, Anna A. Bulysheva, Fanying Li, Richard Heller
Gene Electro Transfer Of Plasmid Encoding Vascular Endothelial Growth Factor For Enhanced Expression And Perfusion In The Ischemic Swine Heart, Barbara Y. Hargrave, Robert Strange Jr., Sagar Navare, Michael Stratton, Niculina Burcus, Len Murray, Cathryn Lundberg, Anna A. Bulysheva, Fanying Li, Richard Heller
Bioelectrics Publications
Myocardial ischemia can damage heart muscle and reduce the heart's pumping efficiency. This study used an ischemic swine heart model to investigate the potential for gene electro transfer of a plasmid encoding vascular endothelial growth factor for improving perfusion and, thus, for reducing cardiomyopathy following acute coronary syndrome. Plasmid expression was significantly greater in gene electro transfer treated tissue compared to injection of plasmid encoding vascular endothelial growth factor alone. Higher gene expression was also seen in ischemic versus non-ischemic groups with parameters 20 Volts (p
Formulating Effective And Accessible Population-Based Colorectal Cancer Screening Programs, Danielle Luffman
Formulating Effective And Accessible Population-Based Colorectal Cancer Screening Programs, Danielle Luffman
Independent Study Project (ISP) Collection
Colorectal cancer, a type of carcinoma originating in cells of the colon or rectum, continues to rank as the third most prevalent cancer worldwide with 1.36 million cases and the fourth most fatal with 693,881 deaths during 2012. In an attempt to alleviate the burden of colorectal cancer throughout society, governments and non-governmental organizations continue to implement population-based cancer screening programs. These programs, typically designed by a federal authority, offer free screening tests to a given population for a certain type of cancer on a routine basis. National systematic screening programs have effectively reduced the incidence of and mortality from …
Pupillometry: A Non-Invasive Technique For Pain Assessment In Paediatric Patients., Mark A. Connelly, Jacob T. Brown, Gregory L. Kearns, Rawni A. Anderson, Shawn D. St Peter, Kathleen A. Neville
Pupillometry: A Non-Invasive Technique For Pain Assessment In Paediatric Patients., Mark A. Connelly, Jacob T. Brown, Gregory L. Kearns, Rawni A. Anderson, Shawn D. St Peter, Kathleen A. Neville
Manuscripts, Articles, Book Chapters and Other Papers
OBJECTIVE: Pupillometry has been used to assess pain intensity and response to analgesic medications in adults. The aim of this observational study was to explore proof of concept for the use of this technique in paediatric patients. Changes in pupil parameters before and after opioid exposure also were evaluated.
DESIGN AND SETTING: This was a single-centre, prospective study conducted at an academic paediatric medical centre.
PATIENTS: Children 9-17 years of age undergoing elective surgical correction of pectus excavatum were enrolled into a protocol approved by the human ethical committee (institutional review board).
INTERVENTIONS: Pupil size and reactivity were measured using …
The Omega-3 Fatty Acid Docosahexaenoic Acid Attenuates Organic Dust-Induced Airway Inflammation., Tara M. Nordgren, Taylor D. Friemel, Art J. Heires, Jill A. Poole, Todd A. Wyatt, Debra J. Romberger
The Omega-3 Fatty Acid Docosahexaenoic Acid Attenuates Organic Dust-Induced Airway Inflammation., Tara M. Nordgren, Taylor D. Friemel, Art J. Heires, Jill A. Poole, Todd A. Wyatt, Debra J. Romberger
Journal Articles: Pulmonary & Critical Care Med
Workers exposed to organic dusts from concentrated animal feeding operations (CAFOs) are at risk for developing airway inflammatory diseases. Available preventative and therapeutic measures for alleviating dust-induced lung disease are inadequate. Because omega-3 fatty acids can mitigate inflammatory processes, we aimed to determine whether nutritional supplementation with the omega-3 fatty acid docosahexaenoic acid (DHA) could reduce the airway inflammatory consequences of exposures to organic dust. Aqueous extracts of organic dusts from swine CAFOs (ODE) were utilized. In DHA-pretreated human bronchial epithelial cells, lung fibroblasts, monocyte cell cultures, and precision-cut murine lung slices, we found that DHA pretreatment dose-dependently decreased ODE-induced …
Structure-Based Network Analysis Of Activation Mechanisms In The Erbb Family Of Receptor Tyrosine Kinases: The Regulatory Spine Residues Are Global Mediators Of Structural Stability And Allosteric Interactions, Kevin A. James, Gennady M. Verkhivker
Structure-Based Network Analysis Of Activation Mechanisms In The Erbb Family Of Receptor Tyrosine Kinases: The Regulatory Spine Residues Are Global Mediators Of Structural Stability And Allosteric Interactions, Kevin A. James, Gennady M. Verkhivker
Mathematics, Physics, and Computer Science Faculty Articles and Research
The ErbB protein tyrosine kinases are among the most important cell signaling families and mutation-induced modulation of their activity is associated with diverse functions in biological networks and human disease. We have combined molecular dynamics simulations of the ErbB kinases with the protein structure network modeling to characterize the reorganization of the residue interaction networks during conformational equilibrium changes in the normal and oncogenic forms. Structural stability and network analyses have identified local communities integrated around high centrality sites that correspond to the regulatory spine residues. This analysis has provided a quantitative insight to the mechanism of mutation-induced ‘‘superacceptor’’ activity …
A Ventilator Strategy Combining Low Tidal Volume Ventilation, Recruitment Maneuvers, And High Positive End-Expiratory Pressure Does Not Increase Sedative, Opioid, Or Neuromuscular Blocker Use In Adults With Acute Respiratory Distress Syndrome And May Improve Patient Comfort, Sangeeta Mehta, Deborah J. Cook, Yoanna Skrobik, John Muscedere
A Ventilator Strategy Combining Low Tidal Volume Ventilation, Recruitment Maneuvers, And High Positive End-Expiratory Pressure Does Not Increase Sedative, Opioid, Or Neuromuscular Blocker Use In Adults With Acute Respiratory Distress Syndrome And May Improve Patient Comfort, Sangeeta Mehta, Deborah J. Cook, Yoanna Skrobik, John Muscedere
Anatomy and Cell Biology Publications
Background: The Lung Open Ventilation Study (LOV Study) compared a low tidal volume strategy with an experimental strategy combining low tidal volume, lung recruitment maneuvers, and higher plateau and positive end-expiratory pressures (PEEP) in adults with acute respiratory distress syndrome (ARDS). Herein, we compared sedative, opioid, and neuromuscular blocker (NMB) use among patients managed with the intervention and control strategies and clinicians' assessment of comfort in both groups. Methods: This was an observational substudy of the LOV Study, a randomized trial conducted in 30 intensive care units in Canada, Australia, and Saudi Arabia. In 16 centers, we recorded daily doses …
Vascular Ehlers-Danlos Syndrome: A Rare Disorder Presenting With Focal Convulsions, Shakeel Ahmed, Syed Rehan Ali, Naila Nadeem, Muhammad Hamid
Vascular Ehlers-Danlos Syndrome: A Rare Disorder Presenting With Focal Convulsions, Shakeel Ahmed, Syed Rehan Ali, Naila Nadeem, Muhammad Hamid
Department of Paediatrics and Child Health
Vascular Ehlers-Danlos Syndrome (VEDS), previously called Ehlers-Danlos syndrome type-IV, is a heterogeneous group of heritable connective tissue disorders characterized by thin, translucent skin, easy bruising, arterial, intestinal, and/or uterine fragility. There is large vessel involvement that leads to arterial rupture often preceded by aneurysm, arteriovenous fistulae, or dissection. Noninvasive imaging studies such as CT angiography and MR angiography are preferred as diagnostic studies for this condition. We are reporting a 4 years old girl who was presented with right sided unilateral convulsions and hypertension. CT angiogram showed stenosis with post-stenotic dilatation of coeliac and superior mesenteric arteries. There were extensive …
Role Of A Genetic Variant On The 15q25.1 Lung Cancer Susceptibility Locus In Smoking-Associated Nasopharyngeal Carcinoma, Xuemei Ji, Weidong Zhang, Jiang Gui, Xia Fan, Weiwei Zhang, Yafang Li, Guangyu An, Dakai Zhu, Qiang Hu
Role Of A Genetic Variant On The 15q25.1 Lung Cancer Susceptibility Locus In Smoking-Associated Nasopharyngeal Carcinoma, Xuemei Ji, Weidong Zhang, Jiang Gui, Xia Fan, Weiwei Zhang, Yafang Li, Guangyu An, Dakai Zhu, Qiang Hu
Dartmouth Scholarship
Background: The 15q25.1 lung cancer susceptibility locus, containing CHRNA5, could modify lung cancer susceptibility and multiple smoking related phenotypes. However, no studies have investigated the association between CHRNA5 rs3841324, which has been proven to have the highest association with CHRNA5 mRNA expression, and the risk of other smoking-associated cancers, except lung cancer. In the current study we examined the association between rs3841324 and susceptibility to smoking-associated nasopharyngeal carcinoma (NPC).
Methods: In this case-control study we genotyped the CHRNA5 rs3841324 polymorphism with 400 NPC cases and 491 healthy controls who were Han Chinese and frequency-matched by age (±5 years), gender, and …
Induction Of Acute Lung Inflammation In Mice With Hemorrhagic Shock And Resuscitation: Role Of Hmgb1, Raymond L. C. Kao, Xuemei Xu, Anargyros Xenocostas, Neil Parry, Tina Mele, Claudio M. Martin, Tao Rui
Induction Of Acute Lung Inflammation In Mice With Hemorrhagic Shock And Resuscitation: Role Of Hmgb1, Raymond L. C. Kao, Xuemei Xu, Anargyros Xenocostas, Neil Parry, Tina Mele, Claudio M. Martin, Tao Rui
Anatomy and Cell Biology Publications
Background: Hemorrhagic shock and resuscitation (HS/R) can induce multiple organ failure which is associated with high mortality. The lung is an organ commonly affected by the HS/R. Acute lung injury is a major cause of dysfunction in other organ systems. The objective of this study is to test the hypothesis that HS/R causes increased gut permeability which results in induction of high mobility group box1 protein (HMGB1) and further leads to the development of acute lung inflammation. Materials and methods: A mouse model of HS/R was employed in this study. Gut permeability and bacterial translocation were assessed with circulating FD4 …
Targeting The Small- And Intermediate Conductance Ca2+- Activated Potassium Channels: The Drug Binding Pocket At The Channel/Calmodulin Interface, Meng Cui, Guangrong Qin, Kunqian Yu, M. Scott Bowers, Miao Zhang
Targeting The Small- And Intermediate Conductance Ca2+- Activated Potassium Channels: The Drug Binding Pocket At The Channel/Calmodulin Interface, Meng Cui, Guangrong Qin, Kunqian Yu, M. Scott Bowers, Miao Zhang
Pharmacy Faculty Articles and Research
The small- and intermediate-conductance Ca 2+ -activated potassium (SK/IK) channels play important roles in the regulation of excitable cells in both the central nervous and cardiovascular systems. Evidence from animal models has implicated SK/IK channels in neurological conditions such as ataxia and alcohol use disorders. Further, genome-wide association studies have suggested that cardiovascular abnormalities such as arrhythmias and hypertension are associated with single nucleotide polymorphisms that occur within the genes encoding the SK/IK channels. The Ca 2+ sensitivity of the SK/IK channels stems from a constitutively bound Ca 2+ -binding protein: calmodulin. Small-molecule positive modulators of SK/IK channels have been …
Olfactory Dysfunction Predicts 5-Year Mortality In Older Adults, Jayant M. Pinto, Kristen E. Wroblewski, David W. Kern, L Phillip Schumm, Martha K. Mcclintock
Olfactory Dysfunction Predicts 5-Year Mortality In Older Adults, Jayant M. Pinto, Kristen E. Wroblewski, David W. Kern, L Phillip Schumm, Martha K. Mcclintock
Psychology & Gerontology Faculty Publications
Prediction of mortality has focused on disease and frailty, although antecedent biomarkers may herald broad physiological decline. Olfaction, an ancestral chemical system, is a strong candidate biomarker because it is linked to diverse physiological processes. We sought to determine if olfactory dysfunction is a harbinger of 5-year mortality in the National Social Life, Health and Aging Project [NSHAP], a nationally representative sample of older U.S. adults. 3,005 community-dwelling adults aged 57–85 were studied in 2005–6 (Wave 1) and their mortality determined in 2010–11 (Wave 2). Olfactory dysfunction, determined objectively at Wave 1, was used to estimate the odds of 5-year, …
Effects Of Yoga On Arm Volume Among Women With Breast Cancer Related Lymphedema: A Pilot Study, Mary Insana Fisher, Betsy Donahoe-Fillmore, Laura Leach, Colleen O'Malley, Cheryl Paeplow, Tess Prescott, Harold L. Merriman
Effects Of Yoga On Arm Volume Among Women With Breast Cancer Related Lymphedema: A Pilot Study, Mary Insana Fisher, Betsy Donahoe-Fillmore, Laura Leach, Colleen O'Malley, Cheryl Paeplow, Tess Prescott, Harold L. Merriman
Physical Therapy Faculty Publications
Lymphedema affects 3–58% of survivors of breast cancer and can result in upper extremity impairments. Exercise can be beneficial in managing lymphedema. Yoga practice has been minimally studied for its effects on breast cancer related lymphedema (BCRL). The purpose of this study was to determine the effect of yoga on arm volume, quality of life (QOL), self-reported arm function, and hand grip strength in women with BCRL. Six women with BCRL participated in modified Hatha yoga 3×/week for 8 weeks. Compression sleeves were worn during yoga sessions. Arm volume, QOL, self-reported arm function, and hand grip strength were measured at …
Neural Transcription Factors: From Embryos To Neural Stem Cells, Hyun-Kyung Lee, Hyun-Shik Lee, Sally Ann Moody
Neural Transcription Factors: From Embryos To Neural Stem Cells, Hyun-Kyung Lee, Hyun-Shik Lee, Sally Ann Moody
Anatomy and Regenerative Biology Faculty Publications
The early steps of neural development in the vertebrate embryo are regulated by sets of transcription factors that control the induction of proliferative, pluripotent neural precursors, the expansion of neural plate stem cells, and their transition to differentiating neural progenitors. These early events are critical for producing a pool of multipotent cells capable of giving rise to the multitude of neurons and glia that form the central nervous system. In this review we summarize findings from gain- and loss-of-function studies in embryos that detail the gene regulatory network responsible for these early events. We discuss whether this information is likely …
Effect Of Age On Uterine And Ovarian Morphology With Polycystic Ovaries, Ambreen Usmani, Rehana Rehman, Aisha Qamar
Effect Of Age On Uterine And Ovarian Morphology With Polycystic Ovaries, Ambreen Usmani, Rehana Rehman, Aisha Qamar
Department of Biological & Biomedical Sciences
Abstract
Objective: To measure the outcome of age on ovarian and uterine morphology in primary infertile women with
polycystic ovaries.
Methods: The observational cross-sectional study was conducted from January 2009 to March 2010, and the
subjects were recruited from Ziauddin Hospital, Nazimabad, Karachi. The primary infertile subjects with polycystic
ovaries were subdivided into two age groups:20-30 years (group I), and 31-40 years (group II). Both groups had equal
number of subjects. The ovarian volume, follicles count and size, uterine area and endometrial thickness were
determined by transabdominal and transvaginal scans. Shapiro-Wilk's test and Mann-Whitney test were applied,
with p<0.05 being significant.
Results: …
0.05>Regulation Of Peripheral Molecular Clocks In Mammalian Tissues And In Vitro Skeletal Muscle Activation Of Amp-Activated Protein Kinase Via Aicar, Alex C. Lupolt, Daniel P. Moorhead, Josef Brandauer
Regulation Of Peripheral Molecular Clocks In Mammalian Tissues And In Vitro Skeletal Muscle Activation Of Amp-Activated Protein Kinase Via Aicar, Alex C. Lupolt, Daniel P. Moorhead, Josef Brandauer
Student Publications
Most organisms possess a common molecular machinery that governs cellular and tissue circadian rhythmicity through a roughly 24-hour transcription-translation feedback loop. It is estimated that up to 15 percent of human genes are influenced by the core clock machinery. It is likely, however, that the metabolic networks affected by the molecular clock differ according to body tissue.
Recent evidence suggests that peripheral molecular clocks are governed to a greater extent by energy availability than by light and dark cycles. AMP-activated protein kinase (AMPK) acts as a cellular fuel gauge within the cell and is activated in response to exercise and …
Unique Functional Abnormalities In Youth With Combined Marijuana Use And Depression: An Fmri Study, Kristen A. Ford, Michael Wammes, Richard W. Neufeld, Derek Mitchell, Jean Theberge, Peter Williamson, Elizabeth A. Osuch
Unique Functional Abnormalities In Youth With Combined Marijuana Use And Depression: An Fmri Study, Kristen A. Ford, Michael Wammes, Richard W. Neufeld, Derek Mitchell, Jean Theberge, Peter Williamson, Elizabeth A. Osuch
Anatomy and Cell Biology Publications
Prior research has shown a relationship between early onset marijuana (MJ) use and depression; however, this relationship is complex and poorly understood. Here, we utilized passive music listening and fMRI to examine functional brain activation to a rewarding stimulus in 75 participants [healthy controls (HC), patients with major depressive disorder (MDD), frequent MJ users, and the combination of MDD and MJ (MDD?+?MJ)]. For each participant, a preferred and neutral piece of instrumental music was determined (utilizing ratings on a standardized scale), and each completed two 6-min fMRI scans of a passive music listening task. Data underwent pre-processing and 61 participants …
Inpp4b Suppresses Prostate Cancer Cell Invasion, Myles C. Hodgson, Elena I. Deryugina, Egla Suarez, Sandra M. Lopez, Dong Lin, Hui Xue, Ivan P. Gorlov
Inpp4b Suppresses Prostate Cancer Cell Invasion, Myles C. Hodgson, Elena I. Deryugina, Egla Suarez, Sandra M. Lopez, Dong Lin, Hui Xue, Ivan P. Gorlov
Dartmouth Scholarship
INPP4B and PTEN dual specificity phosphatases are frequently lost during progression of prostate cancer to metastatic disease. We and others have previously shown that loss of INPP4B expression correlates with poor prognosis in multiple malignancies and with metastatic spread in prostate cancer.
We demonstrate that de novo expression of INPP4B in highly invasive human prostate carcinoma PC-3 cells suppresses their invasion both in vitro and in vivo. Using global gene expression analysis, we found that INPP4B regulates a number of genes associated with cell adhesion, the extracellular matrix, and the cytoskeleton. Importantly, de novo expressed INPP4B suppressed the proinflammatory chemokine …
Atypical Multisensory Integration In Niemann-Pick Type C Disease – Towards Potential Biomarkers, Gizely N. Andrade, Sophie Molholm, John S. Butler, Alice Brown Brandwein, Steven U. Walkley, John J. Foxe
Atypical Multisensory Integration In Niemann-Pick Type C Disease – Towards Potential Biomarkers, Gizely N. Andrade, Sophie Molholm, John S. Butler, Alice Brown Brandwein, Steven U. Walkley, John J. Foxe
Publications and Research
Background: Niemann-Pick type C (NPC) is an autosomal recessive disease in which cholesterol and glycosphingolipids accumulate in lysosomes due to aberrant cell-transport mechanisms. It is characterized by progressive and ultimately terminal neurological disease, but both pre-clinical studies and direct human trials are underway to test the safety and efficacy of cholesterol clearing compounds, with good success already observed in animal models. Key to assessing the effectiveness of interventions in patients, however, is the development of objective neurobiological outcome measures. Multisensory integration mechanisms present as an excellent candidate since they necessarily rely on the fidelity of long-range neural connections between the …
Cardiac Fibroblasts Contribute To Myocardial Dysfunction In Mice With Sepsis: The Role Of Nlrp3 Inflammasome Activation, Wenbo Zhang, Xuemei Xu, Raymond Kao, Tina Mele, Peter Kvietys, Claudio M. Martin, Tao Rui
Cardiac Fibroblasts Contribute To Myocardial Dysfunction In Mice With Sepsis: The Role Of Nlrp3 Inflammasome Activation, Wenbo Zhang, Xuemei Xu, Raymond Kao, Tina Mele, Peter Kvietys, Claudio M. Martin, Tao Rui
Anatomy and Cell Biology Publications
Myocardial contractile dysfunction in sepsis is associated with the increased morbidity and mortality. Although the underlying mechanisms of the cardiac depression have not been fully elucidated, an exaggerated inflammatory response is believed to be responsible. Nucleotide-binding oligomerization domain-like receptor containing pyrin domain 3 (NLRP3) inflammasome is an intracellular platform that is involved in the maturation and release of interleukin (IL)-1 beta. The aim of the present study is to evaluate whether sepsis activates NLRP3 inflammasome/caspase-1/IL-1 beta pathway in cardiac fibroblasts (CFs) and whether this cytokine can subsequently impact the function of cardiomyocytes (cardiac fibroblast-myocyte crosstalk). We show that treatment of …
What Are The Best Skeletal Indicators Of Handedness?, Margret B. White, Anne Su
What Are The Best Skeletal Indicators Of Handedness?, Margret B. White, Anne Su
Undergraduate Research Posters 2014
Previous research indicates that there are asymmetries in limb bone structure and dimensions. It is hypothesized that these asymmetries are the result of hand preference, or repeated unilateral mechanical loading. The aim of this study was to first identify the best skeletal indicators of handedness by means of a comprehensive literature search. Based on the previous findings of other researchers, we examined non-pathological male individuals (N=19, aged 20-35) from the Hamann-Todd Skeletal Collection at the Cleveland Museum of Natural History for asymmetry of paired second metacarpals, by measuring the difference between right and left diameters at mid-shaft. We also tested …
Comparing Moral Judgments Of Patients With Frontotemporal Dementia And Frontal Stroke, Sandra Baez, Blas Couto, Teresa Torralva, Luciano A. Sposato, David Huepe, Patricia Montañes, Pablo Reyes, Diana Matallana, Nora S. Vigliecca, Andrea Slachevsky, Facundo Manes, Agustin Ibanez
Comparing Moral Judgments Of Patients With Frontotemporal Dementia And Frontal Stroke, Sandra Baez, Blas Couto, Teresa Torralva, Luciano A. Sposato, David Huepe, Patricia Montañes, Pablo Reyes, Diana Matallana, Nora S. Vigliecca, Andrea Slachevsky, Facundo Manes, Agustin Ibanez
Anatomy and Cell Biology Publications
Importance Several clinical reports have stated that patients with prefrontal lesions or patients with the behavioral variant of frontotemporal dementia share social cognition impairments. Moral reasoning is impaired in both conditions but there have been few investigations that directly compare this domain in the 2 groups.
Observations This work compared the moral judgments of these patient groups using a task designed to disentangle the contributions of intentions and outcomes in moral judgment. For both disorders, patients judged scenarios where the protagonists believed that they would cause harm but did not as being more permissible than the control group. Moreover, patients …