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Sox11 Expression Is Highly Specific For Mantle Cell Lymphoma And Identifies The Cyclin D1-Negative Subtype., Ana Mozos, Cristina Royo, Elena Hartmann, Daphne De Jong, Cristina Baró, Alexandra Valera, Kai Fu, Dennis D. Weisenburger, Jan Delabie, Shih-Sung Chuang, Elaine S. Jaffe, Carmen Ruiz-Marcellan, Sandeep Dave, Lisa Rimsza, Rita Braziel, Randy D. Gascoyne, Francisco Solé, Armando López-Guillermo, Dolors Colomer, Louis M. Staudt, Andreas Rosenwald, German Ott, Pedro Jares, Elias Campo

Journal Articles: Pathology and Microbiology

BACKGROUND: Cyclin D1-negative mantle cell lymphoma is difficult to distinguish from other small B-cell lymphomas. The clinical and pathological characteristics of patients with this form of lymphoma have not been well defined. Overexpression of the transcription factor SOX11 has been observed in conventional mantle cell lymphoma. The aim of this study was to determine whether this gene is expressed in cyclin D1-negative mantle cell lymphoma and whether its detection may be useful to identify these tumors.

DESIGN AND METHODS: The microarray database of 238 mature B-cell neoplasms was re-examined. SOX11 protein expression was investigated immunohistochemically in 12 cases of cyclin …

Aging Influences The Neural Correlates Of Lexical Decision But Not Automatic Semantic Priming, Brian T. Gold, Anders H. Andersen, Greg A. Jicha, Charles D. Smith

Neuroscience Faculty Publications

Human behavioral data indicate that older adults are slower to perform lexical decisions (LDs) than young adults but show similar reaction time gains when these decisions are primed semantically. The present study explored the functional neuroanatomic bases of these frequently observed behavioral findings. Young and older groups completed unprimed and primed LD tasks while functional magnetic resonance imaging (fMRI) was recorded, using a fully randomized trial design paralleling those used in behavioral research. Results from the unprimed task found that age-related slowing of LD was associated with decreased activation in perceptual extrastriate regions and increased activation in regions associated with …

Analysis Of Globule Types In Malignant Melanoma, Jin Xu, Kapil Kumar Gupta, William V. Stoecker, Yamini Krishnamurthy, Harold S. Rabinovitz, Austin Bangert, David A. Calcara, Margaret C. Oliviero, Joseph M. Malters, Rhett J. Drugge, R. Joe Stanley, Randy Hays Moss, Mehmed Emre Celebi

Chemistry Faculty Research & Creative Works

Objective: To identify and analyze subtypes of globules based on size, shape, network connectedness, pigmentation, and distribution to determine which globule types and globule distributions are most frequently associated with a diagnosis of malignant melanoma. Design: Retrospective case series of dermoscopy images with globules. Setting: Private dermatology practices. Participants: Patients in dermatology practices. Intervention: Observation only. Main Outcome Measure: Association of globule types with malignant melanoma. Results: The presence of large globules (odds ratio [OR], 5.25) and globules varying in size (4.72) or shape (5.37) had the highest ORs for malignant melanoma among all globule types and combinations studied. Classical …

Dysfunctional Attitudes Scale Perfectionism: A Predictor And Partial Mediator Of Acute Treatment Outcome Among Clinically Depressed Adolescents., Rachel H. Jacobs, Susan G. Silva, Mark A. Reinecke, John F. Curry, Golda S. Ginsburg, Christopher J. Kratochvil, John S. March

Journal Articles: Psychiatry

The effect of perfectionism on acute treatment outcomes was explored in a randomized controlled trial of 439 clinically depressed adolescents (12-17 years of age) enrolled in the Treatment for Adolescents with Depression Study (TADS) who received cognitive behavior therapy (CBT), fluoxetine, a combination of CBT and FLX, or pill placebo. Measures included the Children's Depression Rating Scale-Revised, the Suicidal Ideation Questionnaire-Grades 7-9, and the perfectionism subscale from the Dysfunctional Attitudes Scale (DAS). Predictor results indicate that adolescents with higher versus lower DAS perfectionism scores at baseline, regardless of treatment, continued to demonstrate elevated depression scores across the acute treatment period. …

An Exploratory Analysis Of The Impact Of Family Functioning On Treatment For Depression In Adolescents., Norah C. Feeny, Susan G. Silva, Mark A. Reinecke, Steven Mcnulty, Robert L. Findling, Paul Rohde, John F. Curry, Golda S. Ginsburg, Christopher J. Kratochvil, Sanjeev M. Pathak, Diane E. May, Betsy D. Kennard, Anne D. Simons, Karen C. Wells, Michele Robins, David Rosenberg, John S. March

Journal Articles: Psychiatry

This article explores aspects of family environment and parent-child conflict that may predict or moderate response to acute treatments among depressed adolescents (N = 439) randomly assigned to fluoxetine, cognitive behavioral therapy, their combination, or placebo. Outcomes were Week 12 scores on measures of depression and global impairment. Of 20 candidate variables, one predictor emerged: Across treatments, adolescents with mothers who reported less parent-child conflict were more likely to benefit than their counterparts. When family functioning moderated outcome, adolescents who endorsed more negative environments were more likely to benefit from fluoxetine. Similarly, when moderating effects were seen on cognitive behavioral …

Adding Dental Therapists To The Health Care Team To Improve Access To Oral Health Care For Children, David A. Nash

Oral Health Science Faculty Publications

Oral Health in America: A Report of the Surgeon General, and the subsequent National Call to Action to Promote Oral Health, contributed significantly to raising awareness regarding the lack of access to oral health care by many Americans, especially minority and low-income populations, with resulting disparities in oral health. The problem is particularly acute among children. The current dental workforce in the United States is inadequate to meet the oral health care needs of children. It is inadequate in terms of numbers of dentists, as well as their geographic distribution, ethnicity, education, and practice orientation. Dental therapists, paraprofessionals …

Addressing The Lack Of Male Elementary School Teachers: Factors That Influence Grade-Level Preference, Michael David Patrick

Doctoral Dissertations and Projects

The purpose of this study was to determine which, if any, specific factors are deterring male teachers from pursuing elementary education. The number of male elementary teachers in America's public school systems had continued to decline, and this survey sought to discover what specific factors had contributed to this. This study surveyed 231 male public school teachers from six different school districts in Tennessee, Georgia, and Missouri. Male participants recorded their viewpoints regarding male elementary teachers while at the same time they provided personal information concerning factors which contributed to their own personal grade level selection. Participants were surveyed to …

Parent- Versus Child-Reported Functional Health Status After The Fontan Procedure., Linda M. Lambert, L Luann Minich, Jane W. Newburger, Minmin Lu, Victoria L. Pemberton, Ellen A. Mcgrath, Andrew M. Atz, Mingfen Xu, Elizabeth Radojewski, Darlene Servedio, Brian W. Mccrindle, Pediatric Heart Network Investigators, Girish S. Shirali

Manuscripts, Articles, Book Chapters and Other Papers

OBJECTIVE: We sought to compare perceptions of functional health status between children who had undergone a Fontan procedure and their parents.

METHODS: Fontan procedure survivors 10 to 18 years of age were included in the study if the child completed the Child Health Questionnaire (CHQ) and the parent completed the parent form to assess the child's functional health status. Comparisons were made between raw domain scores for the parent- and child-completed CHQs.

RESULTS: Between March 2003 and April 2004, 1078 Fontan survivors were screened. Of the 546 eligible and consented patients, 354 were 10-18 years of age and 328 parent/child …

Accurate Molecular Classification Of Cancer Using Simple Rules., Xiaosheng Wang, Osamu Gotoh

Journal Articles: Genetics, Cell Biology & Anatomy

BACKGROUND: One intractable problem with using microarray data analysis for cancer classification is how to reduce the extremely high-dimensionality gene feature data to remove the effects of noise. Feature selection is often used to address this problem by selecting informative genes from among thousands or tens of thousands of genes. However, most of the existing methods of microarray-based cancer classification utilize too many genes to achieve accurate classification, which often hampers the interpretability of the models. For a better understanding of the classification results, it is desirable to develop simpler rule-based models with as few marker genes as possible.

METHODS: …

Intracranial Eeg Reveals A Time- And Frequency-Specific Role For The Right Inferior Frontal Gyrus And Primary Motor Cortex In Stopping Initiated Responses, Nicole Swann, Nitin Tandon, Ryan Canolty, Timothy M Ellmore, Linda K Mcevoy, Stephen Dreyer, Michael Disano, Adam R Aron

Faculty, Staff and Student Publications

Inappropriate response tendencies may be stopped via a specific fronto/basal ganglia/primary motor cortical network. We sought to characterize the functional role of two regions in this putative stopping network, the right inferior frontal gyrus (IFG) and the primary motor cortex (M1), using electocorticography from subdural electrodes in four patients while they performed a stop-signal task. On each trial, a motor response was initiated, and on a minority of trials a stop signal instructed the patient to try to stop the response. For each patient, there was a greater right IFG response in the beta frequency band ( approximately 16 Hz) …

Antidepressant-Induced Mania With Concomitant Mood Stabilizer In Patients With Comorbid Substance Abuse And Bipolar Disorder., Daniel Z Lieberman, George Kolodner, Suena H Massey, Kenneth P Williams

Psychiatry and Behavioral Sciences Faculty Publications

Antidepressant use in the treatment of bipolar disorder is controversial due the risks of affective switching and cycle acceleration. Studies of non-comorbid samples suggest that the risk can be mitigated with the use of a concomitant mood stabilizer. However, the majority of patients with bipolar disorder will experience a comorbid substance use disorder and little is known about these individuals because they are typically excluded from clinical trials. Patients entering a substance abuse treatment program who had a history of bipolar disorder were interviewed to evaluate antidepressant-induced affective switching with and without concomitant mood stabilizer. Among 41 comorbid participants, the …

The Pars Triangularis In Dyslexia And Adhd: A Comprehensive Approach., Michelle Y. Kibby, Judith M Kroese, Hillery Krebbs, Crystal E Hill, George W Hynd

Publications

Limited research has been conducted on the structure of the pars triangularis (PT) in dyslexia despite functional neuroimaging research finding it may play a role in phonological processing. Furthermore, research to date has not examined PT size in ADHD even though the right inferior frontal region has been implicated in the disorder. Hence, one of the purposes of this study was to examine the structure of the PT in dyslexia and ADHD. The other purposes included examining the PT in relation to overall expressive language ability and in relation to several specific linguistic functions given language functioning often is affected …

Treatment Response In Depressed Adolescents With And Without Co-Morbid Attention-Deficit/Hyperactivity Disorder In The Treatment For Adolescents With Depression Study., Christopher J. Kratochvil, Diane E. May, Susan G. Silva, Vishal Madaan, Susan E. Puumala, John F. Curry, John Walkup, Hayden Kepley, Benedetto Vitiello, John S. March

Journal Articles: Psychiatry

OBJECTIVE: In the Treatment for Adolescents with Depression Study (TADS), fluoxetine (FLX) and the combination of fluoxetine with cognitive-behavioral therapy (COMB) had superior improvement trajectories compared to pill placebo (PBO), whereas cognitive-behavioral therapy (CBT) was not significantly different from PBO. Because attention-deficit/hyperactivity disorder (ADHD) and major depressive disorder (MDD) frequently co-exist, we examined whether ADHD moderated these outcomes in TADS.

METHOD: A total of 439 adolescents with MDD, 12-17 years old, were randomized to FLX, CBT, COMB, or PBO. Random coefficients regression models examined depression improvement in 377 depressed youths without ADHD and 62 with ADHD, including 20 who were …

Spontaneous Left Main Coronary Artery Dissection, Possibly Due To Cystic Medial Necrosis Found In The Internal Mammary Arteries., Hitoshi Hirose, Iwao Matsunaga, Waqas Anjun, Michael D Strong

Department of Surgery Faculty Papers

A 55-year-old male without previous medical history developed chest pain. Coronary catheterization showed left main coronary dissection. Coronary artery bypass grafting was performed using bilateral internal mammary arteries, which were very fragile. The specimens of the internal mammary arteries sent for pathology showed cystic medial necrosis.

Sour Ageusia In Two Individuals Implicates Ion Channels Of The Asic And Pkd Families In Human Sour Taste Perception At The Anterior Tongue., Taufiqul Huque, Beverly J Cowart, Luba Dankulich-Nagrudny, Edmund A Pribitkin, Douglas L Bayley, Andrew I Spielman, Roy S Feldman, Scott A Mackler, Joseph G Brand

Department of Otolaryngology - Head and Neck Surgery Faculty Papers

BACKGROUND: The perception of sour taste in humans is incompletely understood at the receptor cell level. We report here on two patients with an acquired sour ageusia. Each patient was unresponsive to sour stimuli, but both showed normal responses to bitter, sweet, and salty stimuli.

METHODS AND FINDINGS: Lingual fungiform papillae, containing taste cells, were obtained by biopsy from the two patients, and from three sour-normal individuals, and analyzed by RT-PCR. The following transcripts were undetectable in the patients, even after 50 cycles of amplification, but readily detectable in the sour-normal subjects: acid sensing ion channels (ASICs) 1a, 1beta, 2a, …

Euroscore Predicts Postoperative Mortality, Certain Morbidities, And Recovery Time., Hitoshi Hirose, Hirotaka Inaba, Chiaki Noguchi, Keiichi Tambara, Taira Yamamoto, Motoshige Yamasaki, Keita Kikuchi, Atsushi Amano

Department of Surgery Faculty Papers

EuroSCORE (European System for Cardiac Operative Risk Evaluation) used for calculating the risk of the postoperative mortality rate for patients undergoing open-heart surgery may be able to predict postoperative complications as well. Consecutive cases of isolated on-pump coronary artery bypass grafting (CABG) (n=1552) performed between 1991 and 2006 at our hospital group were placed into a systematic database. Patients were stratified using additive EuroSCORE. Incidence of postoperative mortality, morbidity (bleeding, heart failure, mediastinitis, pneumonia, myocardial infarction, renal failure, and stroke), and recovery time (intubation time, ICU stay, and postoperative length of stay) was assessed in each EuroSCORE group. EuroSCORE was …

Ethnic Differences In Do-Not-Resuscitate Orders After Intracerebral Hemorrhage, Darin B Zahuranec, Devin L Brown, Lynda D Lisabeth, Nicole R Gonzales, Paxton J Longwell, Melinda A Smith, Nelda M Garcia, Lewis B Morgenstern

Faculty, Staff and Student Publications

OBJECTIVE: To explore ethnic differences in do-not-resuscitate orders after intracerebral hemorrhage.

DESIGN: Population-based surveillance.

SETTING: Corpus Christi, Texas.

PATIENTS: All cases of intracerebral hemorrhage in the community of Corpus Christi, TX were ascertained as part of the Brain Attack Surveillance in Corpus Christi (BASIC) project.

INTERVENTIONS: None.

MEASUREMENTS AND MAIN RESULTS: Medical records were reviewed for do-not-resuscitate orders. Unadjusted and multivariable logistic regression were used to test for associations between ethnicity and do-not-resuscitate orders, both overall ("any do-not-resuscitate") and within 24 hrs of presentation ("early do-not-resuscitate"), adjusted for age, gender, Glasgow Coma Scale, intracerebral hemorrhage volume, intraventricular hemorrhage, infratentorial hemorrhage, …

Role Of Mammalian Ecdysoneless In Cell Cycle Regulation., Jun Hyun Kim, Channabasavaiah B. Gurumurthy, Mayumi Naramura, Ying Zhang, Andrew T. Dudley, Lynn Doglio, Hamid Band, Vimla Band

Journal Articles: Genetics, Cell Biology & Anatomy

The Ecdysoneless (Ecd) protein is required for cell-autonomous roles in development and oogenesis in Drosophila, but the function of its evolutionarily conserved mammalian orthologs is not clear. To study the cellular function of Ecd in mammalian cells, we generated Ecd(lox/lox) mouse embryonic fibroblast cells from Ecd floxed mouse embryos. Cre-mediated deletion of Ecd in Ecd(lox/lox) mouse embryonic fibroblasts led to a proliferative block due to a delay in G(1)-S cell cycle progression; this defect was reversed by the introduction of human Ecd. Loss of Ecd led to marked down-regulation of E2F target gene expression. Furthermore, Ecd directly bound to Rb …

Bridging The Care Continuum: Patient Information Needs For Specialist Referrals., Carol L. Ireson, Svetla Slavova, Carol L. Steltenkamp, F. Douglas Scutchfield

Preventive Medicine and Environmental Health Faculty Publications

BACKGROUND: Information transfer is critical in the primary care to specialist referral process and has been examined extensively in the US and other countries, yet there has been little attention to the patient's perspective of the information transfer process. This cross-sectional study examined the quality of the information received by patients with a chronic condition from the referring and specialist physician in the specialist referral process and the relationship of the quality of information received to trust in the physicians.

METHODS: Structured telephone interviews were conducted with a random sample of 250 patients who had experienced a referral to a …

Adapting To Dynamic Stimulus-Response Values: Differential Contributions Of Inferior Frontal, Dorsomedial, And Dorsolateral Regions Of Prefrontal Cortex To Decision Making., Derek G V Mitchell, Qian Luo, Shelley B Avny, Tomasz Kasprzycki, Karanvir Gupta, Gang Chen, Elizabeth C Finger, R James R Blair

Brain and Mind Institute Researchers' Publications

Dorsomedial prefrontal cortex (dmPFC), dorsolateral prefrontal cortex (dlPFC), and inferior frontal gyrus (IFG) have all been implicated in resolving decision conflict whether this conflict is generated by having to select between responses of similar value or by making selections following a reversal in reinforcement contingencies. However, work distinguishing their individual functional contributions remains preliminary. We used functional magnetic resonance imaging to delineate the functional role of these systems with regard to both forms of decision conflict. Within dmPFC and dlPFC, blood oxygen level-dependent responses increased in response to decision conflict regardless of whether the conflict occurred in the context of …

Human Amniotic Fluid Stem Cells Do Not Differentiate Into Dopamine Neurons In Vitro Or After Transplantation In Vivo., Angela E Donaldson, Jingli Cai, Ming Yang, Lorraine Iacovitti

Farber Institute for Neuroscience Faculty Papers

Although embryonic stem (ES) cells can generate dopamine (DA) neurons that are potentially useful as a cell replacement therapy in Parkinson's disease (PD), associated ethical and practical concerns remain major stumbling blocks to their eventual use in humans. In this study, we examined human amniotic fluid stem (hAFS) cells derived from routine amniocenteses for their potential to give rise to DA neurons in vitro and following transplantation into the 6-hydroxydopamine-lesioned rat brain. We show that undifferentiated hAFS cells constitutively expressed mRNAs and proteins typical of stem cells but also cell derivatives of all three germ layers, including neural progenitors/neurons (nestin, …

The Effects Of Shoe Traction And Obstacle Height On Lower Extremity Coordination Dynamics During Walking., Leslie Decker, Jeremy J. Houser, John M. Noble, Gregory M. Karst, Nicholas Stergiou

Journal Articles: Physical Therapy

This study aims to investigate the effects of shoe traction and obstacle height on lower extremity relative phase dynamics (analysis of intralimb coordination) during walking to better understand the mechanisms employed to avoid slippage following obstacle clearance. Ten participants walked at a self-selected pace during eight conditions: four obstacle heights (0%, 10%, 20%, and 40% of limb length) while wearing two pairs of shoes (low and high traction). A coordination analysis was used and phasing relationships between lower extremity segments were examined. The results demonstrated that significant behavioral changes were elicited under varied obstacle heights and frictional conditions. Both decreasing …

The Medicine Wheel Nutrition Intervention: A Diabetes Education Study With The Cheyenne River Sioux Tribe, Kendra K. Kattelmann, Kibbe Conti, Cuirong Ren

Health and Nutritional Sciences Faculty Publications

OBJECTIVE: The Northern Plains Indians of the Cheyenne River Sioux Tribe have experienced significant lifestyle and dietary changes over the past seven generations that have resulted in increased rates of diabetes and obesity. The objective of this study was to determine if Northern Plains Indians with type 2 diabetes mellitus who are randomized to receive culturally adapted educational lessons based on the Medicine Wheel Model for Nutrition in addition to their usual dietary education will have better control of their type 2 diabetes than a nonintervention, usual care group who received only the usual dietary education from their personal providers. …

Sexuality And Persons With Down Syndrome. A Study From Brazil, Bruna Marques Bononi, Maria José Carvalho Sant'anna, André Chao Vasconcellos De Oliveira, Tadeu Silveira Renattini, Carla Franchi Pinto, Maria Lúcia Passarelli, Verônica Coates, Hatim A. Omar

Pediatrics Faculty Publications

In recent years, important gains and changes have been observed in the life of teenagers with Down syndrome (DS) with increased inclusion into society. This review will discuss adolescence and sexuality in teenagers with DS from a descriptive study of 50 patients with DS between the ages of 10 and 20 years. The mean age was 13.5 years, 50% females; 86% went to school with 62.2% in school for over six years. Of the patients that attended school, 60% went to special education school and only 10% read and wrote correctly. In an evaluation of autonomy, 66% took showers, 78% …

The Devil Is In The Third Year: A Longitudinal Study Of Erosion Of Empathy In Medical School., Mohammadreza Hojat, Michael J. Vergare, Kaye Maxwell, George Brainard, Steven K. Herrine, Gerald A. Isenberg, John Veloski, Joseph S. Gonnella

Department of Psychiatry and Human Behavior Faculty Papers

PURPOSE: This longitudinal study was designed to examine changes in medical students' empathy during medical school and to determine when the most significant changes occur.

METHOD: Four hundred fifty-six students who entered Jefferson Medical College in 2002 (n = 227) and 2004 (n = 229) completed the Jefferson Scale of Physician Empathy at five different times: at entry into medical school on orientation day and subsequently at the end of each academic year. Statistical analyses were performed for the entire cohort, as well as for the "matched" cohort (participants who identified themselves at all five test administrations) and the "unmatched" …

Low-Dose Arsenic Compromises The Immune Response To Influenza A Infection In Vivo, Courtney D. Kozul, Kenneth H. Ely, Richard I. Enelow, Joshua W. Hamilton

Dartmouth Scholarship

Background:

Arsenic exposure is a significant worldwide environmental health concern. We recently reported that 5-week exposure to environmentally relevant levels (10 and 100 ppb) of As in drinking water significantly altered components of the innate immune response in mouse lung, which we hypothesize is an important contributor to the increased risk of lung disease in exposed human populations.

Objectives:

We investigated the effects of As exposure on respiratory influenza A (H1N1) virus infection, a common and potentially fatal disease.

Methods:

In this study, we exposed C57BL/6J mice to 100 ppb As in drinking water for 5 weeks, followed by intranasal …

Effects Of Genetic Deficiency Of Cyclooxygenase-1 Or Cyclooxygenase-2 On Functional And Histological Outcomes Following Traumatic Brain Injury In Mice, Matthew L. Kelso, Stephen W. Scheff, James R. Pauly, Charles D. Loftin

Pharmaceutical Sciences Faculty Publications

BACKGROUND: Neuroinflammation contributes to the pathophysiology of acute CNS injury, including traumatic brain injury (TBI). Although prostaglandin lipid mediators of inflammation contribute to a variety of inflammatory responses, their importance in neuroinflammation is not clear. There are conflicting reports as to the efficacy of inhibiting the enzymes required for prostaglandin formation, cyclooxygenase (COX) -1 and COX-2, for improving outcomes following TBI. The purpose of the current study was to determine the role of the COX isoforms in contributing to pathological processes resulting from TBI by utilizing mice deficient in COX-1 or COX-2.

RESULTS: Following a mild controlled cortical impact injury, …

Jnk1 Activation Predicts The Prognostic Outcome Of The Human Hepatocellular Carcinoma, Qingshan Chang, Jianguo Chen, Kevin J. Beezhold, Vince Castranova, Xianglin Shi, Fei Chen

Toxicology and Cancer Biology Faculty Publications

BACKGROUND: Hepatocellular carcinoma (HCC) is one of the most common cancers worldwide with an extremely poor prognosis. The classification of HCC based on the molecular signature is not well-established.

RESULTS: In the present study, we reported HCC signature genes based on the JNK1 activation status in 31 HCC specimens relative to the matched distal noncancerous liver tissue from 31 patients. The HCCs with high JNK1 (H-JNK1) and low JNK1 (L-JNK1) were sub-grouped. Two different signature gene sets for both H-JNK1 and L-JNK1 HCC were identified through gene expression profiling. A striking overlap of signature genes was observed between the H-JNK1 …

Aging And Environmental Exposures Alter Tissue-Specific Dna Methylation Dependent Upon Cpg Island Context, Brock C. Christensen, E Andres Houseman, Carmen J. Marsit, Shichun Zheng, Margaret R. Wrensch, Joseph L. Wiemels, Heather H. Nelson, Margaret R. Karagas

Dartmouth Scholarship

Epigenetic control of gene transcription is critical for normal human development and cellular differentiation. While alterations of epigenetic marks such as DNA methylation have been linked to cancers and many other human diseases, interindividual epigenetic variations in normal tissues due to aging, environmental factors, or innate susceptibility are poorly characterized. The plasticity, tissue-specific nature, and variability of gene expression are related to epigenomic states that vary across individuals. Thus, population-based investigations are needed to further our understanding of the fundamental dynamics of normal individual epigenomes. We analyzed 217 non-pathologic human tissues from 10 anatomic sites at 1,413 autosomal CpG loci …

Manipulating Testosterone To Assess Links Between Behavior, Morphology, And Performance In The Brown Anole Anolis Sagrei, Robert M. Cox, Derek S. Stenquist, Justin P. Henningsen, Ryan Calsbeek

Dartmouth Scholarship

Survival and reproductive success are determined by the complex interplay between behavior, physiology, morphology, and performance. When optimal trait combinations along these various phenotypic axes differ between sexes or across seasons, regulatory mechanisms such as sex steroids can often facilitate sex‐specific and/or seasonal trait expression. In this study, we used surgical castration and replacement of exogenous testosterone in adult male brown anoles (Anolis sagrei) to simultaneously examine the effects of testosterone on a suite of morphological (dewlap area, body size), physiological (immune function), behavioral (dewlap, head bob, and push‐up displays), and performance (stamina, sprint speed, bite force) traits. …