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Denise hemmings

Mahdi Malekpour, Jabran M Younus, Kathryn Jaap, Nina Neuhaus, Kenneth Widom, Megan Rapp, James Dove, Marie Hunsinger, Joseph Blansfield, Mohsen Shabahang, Denise Torres, Jeffrey Wild
Helicopter Emergency Medical Services (HEMS) is presumably an effective way of patient transport in rural trauma, yet the literature addressing its effectiveness is scarce. In this study, we compared the clinical outcome of rural trauma patients between Ground Emergency Medical Services (GEMS) and HEMS transportation from the beginning of 2006 to the end of 2012. Focus was placed on identifying factors associated with survival to discharge in these patients. Over the seven-year study period, 4492 patients met the inclusion criteria with 2414 patients (54%) being transferred by GEMS and 2078 patients (46%) being transferred by HEMS...
December 1, 2017: American Surgeon
Amanda T Cao, Martina Mackova, Daniel Kerage, David N Brindley, Denise G Hemmings
Elderly people often suffer adverse health because of inflammation associated with poor metabolism and cardiovascular dysfunction, but these conditions present differently in men and women. We performed experiments in aged male and female mice to understand this sexual dimorphism. We focused on sphingosine 1-phosphate (S1P) signaling, which has both protective and detrimental effects on vascular and metabolic function. We examined vascular function of mesenteric (resistance) arteries from aged male and female wild-type (WT) mice compared to littermate S1P receptor 3 (S1PR3) knockouts (KO)...
December 1, 2017: Experimental Gerontology
Crystalyn B Legg-St Pierre, Martina Mackova, Ewa I Miskiewicz, Denise G Hemmings, Suraj Unniappan, Daniel J MacPhee
The placenta is the physiological bridge between mother and fetus and has life-sustaining functions during pregnancy, including metabolic regulation, fetal protection and hormone secretion. Nucleobindin-2 (NUCB2) is a calcium- and DNA-binding protein and precursor of nesfatin-1, a signalling peptide with multiple functions, including regulation of energy homeostasis and glucose transport. These are also key functions of the placenta, yet NUCB2/nesfatin-1 expression has never been comprehensively studied in this organ...
March 2018: Reproduction, Fertility, and Development
Guanmin Meng, Xiaoyun Tang, Zelei Yang, Matthew G K Benesch, Alison Marshall, David Murray, Denise G Hemmings, Frank Wuest, Todd P W McMullen, David N Brindley
We have previously established that adipose tissue adjacent to breast tumors becomes inflamed by tumor-derived cytokines. This stimulates autotaxin (ATX) secretion from adipocytes, whereas breast cancer cells produce insignificant ATX. Lysophosphatidate produced by ATX promotes inflammatory cytokine secretion in a vicious inflammatory cycle, which increases tumor growth and metastasis and decreases response to chemotherapy. We hypothesized that damage to adipose tissue during radiotherapy for breast cancer should promote lysophosphatidic acid (LPA) signaling and further inflammatory signaling, which could potentially protect cancer cells from subsequent fractions of radiation therapy...
September 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Christopher Lineker, Paul M Kerr, Patricia Nguyen, Ian Bloor, Stuart Astbury, Nikhil Patel, Helen Budge, Denise G Hemmings, Frances Plane, Michael E Symonds, Rhonda C Bell
Maternal carbohydrate intake is one important determinant of fetal body composition, but whether increased exposure to individual sugars has long-term adverse effects on the offspring is not well established. Therefore, we examined the effect of fructose feeding on the mother, placenta, fetus and her offspring up to 6 months of life when they had been weaned onto a standard rodent diet and not exposed to additional fructose. Dams fed fructose were fatter, had raised plasma insulin and triglycerides from mid-gestation and higher glucose near term...
October 2016: Reproduction, Fertility, and Development
Matthew G K Benesch, Xiaoyun Tang, Jay Dewald, Wei-Feng Dong, John R Mackey, Denise G Hemmings, Todd P W McMullen, David N Brindley
Compared to normal tissues, many cancer cells overexpress autotaxin (ATX). This secreted enzyme produces extracellular lysophosphatidate, which signals through 6 GPCRs to drive cancer progression. Our previous work showed that ATX inhibition decreases 4T1 breast tumor growth in BALB/c mice by 60% for about 11 d. However, 4T1 cells do not produce significant ATX. Instead, the ATX is produced by adjacent mammary adipose tissue. We investigated the molecular basis of this interaction in human and mouse breast tumors...
September 2015: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Veronika M Berghold, Martin Gauster, Denise G Hemmings, Gerit Moser, Julia Kremshofer, Monika Siwetz, Monika Sundl, Berthold Huppertz
A crucial factor for effective villous trophoblast fusion in the human placenta is the transient deregulation of plasma membrane phospholipid asymmetry leading to externalization of phosphatidylserine to the outer membrane leaflet. Screening of scramblase family members implicated in the collapse of phospholipid asymmetry revealed that phospholipid scramblase 1 (PLSCR1) is strongly expressed in villous trophoblast. Therefore, we assessed the putative role of PLSCR1 in villous trophoblast fusion. Spatio-temporal analysis in first trimester and term placenta showed abundant expression of PLSCR1 in syncytiotrophoblast, macrophages and endothelial cells, while it was virtually absent in villous cytotrophoblasts...
April 2015: Histochemistry and Cell Biology
Amy Maghera, Paul Kahlke, Amanda Lau, Yiye Zeng, Chris Hoskins, Tom Corbett, Donna Manca, Thierry Lacaze-Masmonteil, Denise Hemmings, Piush Mandhane
BACKGROUND: Recruitment is a challenge in developing population-representative pregnancy and birth cohorts. METHODS: We developed a collaborative recruitment infrastructure (CRI) to recruit pregnant women for 4 pregnancy cohorts using: faxes from obstetrical offices, in-clinic recruiters, university and funder-driven free-media events, paid-media, and attendance at relevant tradeshows. Recruitment rates and demographic differences were compared between recruitment methods...
September 27, 2014: BMC Medical Research Methodology
Dongmei Yu, Carol A Mathews, Jeremiah M Scharf, Benjamin M Neale, Lea K Davis, Eric R Gamazon, Eske M Derks, Patrick Evans, Christopher K Edlund, Jacquelyn Crane, Jesen A Fagerness, Lisa Osiecki, Patience Gallagher, Gloria Gerber, Stephen Haddad, Cornelia Illmann, Lauren M McGrath, Catherine Mayerfeld, Sampath Arepalli, Cristina Barlassina, Cathy L Barr, Laura Bellodi, Fortu Benarroch, Gabriel Bedoya Berrió, O Joseph Bienvenu, Donald W Black, Michael H Bloch, Helena Brentani, Ruth D Bruun, Cathy L Budman, Beatriz Camarena, Desmond D Campbell, Carolina Cappi, Julio C Cardona Silgado, Maria C Cavallini, Denise A Chavira, Sylvain Chouinard, Edwin H Cook, M R Cookson, Vladimir Coric, Bernadette Cullen, Daniele Cusi, Richard Delorme, Damiaan Denys, Yves Dion, Valsama Eapen, Karin Egberts, Peter Falkai, Thomas Fernandez, Eduardo Fournier, Helena Garrido, Daniel Geller, Donald L Gilbert, Simon L Girard, Hans J Grabe, Marco A Grados, Benjamin D Greenberg, Varda Gross-Tsur, Edna Grünblatt, John Hardy, Gary A Heiman, Sian M J Hemmings, Luis D Herrera, Dianne M Hezel, Pieter J Hoekstra, Joseph Jankovic, James L Kennedy, Robert A King, Anuar I Konkashbaev, Barbara Kremeyer, Roger Kurlan, Nuria Lanzagorta, Marion Leboyer, James F Leckman, Leonhard Lennertz, Chunyu Liu, Christine Lochner, Thomas L Lowe, Sara Lupoli, Fabio Macciardi, Wolfgang Maier, Paolo Manunta, Maurizio Marconi, James T McCracken, Sandra C Mesa Restrepo, Rainald Moessner, Priya Moorjani, Jubel Morgan, Heike Muller, Dennis L Murphy, Allan L Naarden, Erika Nurmi, William Cornejo Ochoa, Roel A Ophoff, Andrew J Pakstis, Michele T Pato, Carlos N Pato, John Piacentini, Christopher Pittenger, Yehuda Pollak, Scott L Rauch, Tobias Renner, Victor I Reus, Margaret A Richter, Mark A Riddle, Mary M Robertson, Roxana Romero, Maria C Rosário, David Rosenberg, Stephan Ruhrmann, Chiara Sabatti, Erika Salvi, Aline S Sampaio, Jack Samuels, Paul Sandor, Susan K Service, Brooke Sheppard, Harvey S Singer, Jan H Smit, Dan J Stein, Eric Strengman, Jay A Tischfield, Maurizio Turiel, Ana V Valencia Duarte, Homero Vallada, Jeremy Veenstra-VanderWeele, Susanne Walitza, Ying Wang, Mike Weale, Robert Weiss, Jens R Wendland, Herman G M Westenberg, Yin Yao Shugart, Ana G Hounie, Euripedes C Miguel, Humberto Nicolini, Michael Wagner, Andres Ruiz-Linares, Danielle C Cath, William McMahon, Danielle Posthuma, Ben A Oostra, Gerald Nestadt, Guy A Rouleau, Shaun Purcell, Michael A Jenike, Peter Heutink, Gregory L Hanna, David V Conti, Paul D Arnold, Nelson B Freimer, S Evelyn Stewart, James A Knowles, Nancy J Cox, David L Pauls
OBJECTIVE: Obsessive-compulsive disorder (OCD) and Tourette's syndrome are highly heritable neurodevelopmental disorders that are thought to share genetic risk factors. However, the identification of definitive susceptibility genes for these etiologically complex disorders remains elusive. The authors report a combined genome-wide association study (GWAS) of Tourette's syndrome and OCD. METHOD: The authors conducted a GWAS in 2,723 cases (1,310 with OCD, 834 with Tourette's syndrome, 579 with OCD plus Tourette's syndrome/chronic tics), 5,667 ancestry-matched controls, and 290 OCD parent-child trios...
January 2015: American Journal of Psychiatry
Lea K Davis, Dongmei Yu, Clare L Keenan, Eric R Gamazon, Anuar I Konkashbaev, Eske M Derks, Benjamin M Neale, Jian Yang, S Hong Lee, Patrick Evans, Cathy L Barr, Laura Bellodi, Fortu Benarroch, Gabriel Bedoya Berrio, Oscar J Bienvenu, Michael H Bloch, Rianne M Blom, Ruth D Bruun, Cathy L Budman, Beatriz Camarena, Desmond Campbell, Carolina Cappi, Julio C Cardona Silgado, Danielle C Cath, Maria C Cavallini, Denise A Chavira, Sylvain Chouinard, David V Conti, Edwin H Cook, Vladimir Coric, Bernadette A Cullen, Dieter Deforce, Richard Delorme, Yves Dion, Christopher K Edlund, Karin Egberts, Peter Falkai, Thomas V Fernandez, Patience J Gallagher, Helena Garrido, Daniel Geller, Simon L Girard, Hans J Grabe, Marco A Grados, Benjamin D Greenberg, Varda Gross-Tsur, Stephen Haddad, Gary A Heiman, Sian M J Hemmings, Ana G Hounie, Cornelia Illmann, Joseph Jankovic, Michael A Jenike, James L Kennedy, Robert A King, Barbara Kremeyer, Roger Kurlan, Nuria Lanzagorta, Marion Leboyer, James F Leckman, Leonhard Lennertz, Chunyu Liu, Christine Lochner, Thomas L Lowe, Fabio Macciardi, James T McCracken, Lauren M McGrath, Sandra C Mesa Restrepo, Rainald Moessner, Jubel Morgan, Heike Muller, Dennis L Murphy, Allan L Naarden, William Cornejo Ochoa, Roel A Ophoff, Lisa Osiecki, Andrew J Pakstis, Michele T Pato, Carlos N Pato, John Piacentini, Christopher Pittenger, Yehuda Pollak, Scott L Rauch, Tobias J Renner, Victor I Reus, Margaret A Richter, Mark A Riddle, Mary M Robertson, Roxana Romero, Maria C Rosàrio, David Rosenberg, Guy A Rouleau, Stephan Ruhrmann, Andres Ruiz-Linares, Aline S Sampaio, Jack Samuels, Paul Sandor, Brooke Sheppard, Harvey S Singer, Jan H Smit, Dan J Stein, E Strengman, Jay A Tischfield, Ana V Valencia Duarte, Homero Vallada, Filip Van Nieuwerburgh, Jeremy Veenstra-Vanderweele, Susanne Walitza, Ying Wang, Jens R Wendland, Herman G M Westenberg, Yin Yao Shugart, Euripedes C Miguel, William McMahon, Michael Wagner, Humberto Nicolini, Danielle Posthuma, Gregory L Hanna, Peter Heutink, Damiaan Denys, Paul D Arnold, Ben A Oostra, Gerald Nestadt, Nelson B Freimer, David L Pauls, Naomi R Wray, S Evelyn Stewart, Carol A Mathews, James A Knowles, Nancy J Cox, Jeremiah M Scharf
The direct estimation of heritability from genome-wide common variant data as implemented in the program Genome-wide Complex Trait Analysis (GCTA) has provided a means to quantify heritability attributable to all interrogated variants. We have quantified the variance in liability to disease explained by all SNPs for two phenotypically-related neurobehavioral disorders, obsessive-compulsive disorder (OCD) and Tourette Syndrome (TS), using GCTA. Our analysis yielded a heritability point estimate of 0.58 (se = 0...
October 2013: PLoS Genetics
Tye E Arbuckle, William D Fraser, Mandy Fisher, Karelyn Davis, Chun Lei Liang, Nicole Lupien, Stéphanie Bastien, Maria P Velez, Peter von Dadelszen, Denise G Hemmings, Jingwei Wang, Michael Helewa, Shayne Taback, Mathew Sermer, Warren Foster, Greg Ross, Paul Fredette, Graeme Smith, Mark Walker, Roberta Shear, Linda Dodds, Adrienne S Ettinger, Jean-Philippe Weber, Monique D'Amour, Melissa Legrand, Premkumari Kumarathasan, Renaud Vincent, Zhong-Cheng Luo, Robert W Platt, Grant Mitchell, Nick Hidiroglou, Kevin Cockell, Maya Villeneuve, Dorothea F K Rawn, Robert Dabeka, Xu-Liang Cao, Adam Becalski, Nimal Ratnayake, Genevieve Bondy, Xiaolei Jin, Zhongwen Wang, Sheryl Tittlemier, Pierre Julien, Denise Avard, Hope Weiler, Alain Leblanc, Gina Muckle, Michel Boivin, Ginette Dionne, Pierre Ayotte, Bruce Lanphear, Jean R Séguin, Dave Saint-Amour, Eric Dewailly, Patricia Monnier, Gideon Koren, Emmanuel Ouellet
BACKGROUND: The Maternal-Infant Research on Environmental Chemicals (MIREC) Study was established to obtain Canadian biomonitoring data for pregnant women and their infants, and to examine potential adverse health effects of prenatal exposure to priority environmental chemicals on pregnancy and infant health. METHODS: Women were recruited during the first trimester from 10 sites across Canada and were followed through delivery. Questionnaires were administered during pregnancy and post-delivery to collect information on demographics, occupation, life style, medical history, environmental exposures and diet...
July 2013: Paediatric and Perinatal Epidemiology
Randi B Gombos, Jana Teefy, Albert Lee, Denise G Hemmings
Cytomegalovirus (CMV) infections are associated with vascular diseases in the human population. We have previously shown vascular dysfunction in systemic and uterine arteries dissected from nonpregnant (NP) mouse CMV (mCMV)-infected mice that was further impaired during late pregnancy (LP). CMV attachment alone through glycoprotein B (GB) can generate signals that impact vascular tone regulation. However, the contribution of direct virus interactions with endothelium to the vascular dysfunction we previously observed after in vivo mCMV infection is not known...
October 2012: Biology of Reproduction
Radda Rusinova, Karl F Herold, R Lea Sanford, Denise V Greathouse, Hugh C Hemmings, Olaf S Andersen
The thiazolidinediones (TZDs) are used in the treatment of diabetes mellitus type 2. Their canonical effects are mediated by activation of the peroxisome proliferator-activated receptor γ (PPARγ) transcription factor. In addition to effects mediated by gene activation, the TZDs cause acute, transcription-independent changes in various membrane transport processes, including glucose transport, and they alter the function of a diverse group of membrane proteins, including ion channels. The basis for these off-target effects is unknown, but the TZDs are hydrophobic/amphiphilic and adsorb to the bilayer-water interface, which will alter bilayer properties, meaning that the TZDs may alter membrane protein function by bilayer-mediated mechanisms...
August 2011: Journal of General Physiology
Ashley Davey, Lauren Eastman, Priyanka Hansraj, Denise G Hemmings
Human cytomegalovirus (HCMV) is the leading cause of congenital disease in the developed world. Transmission of HCMV to the fetus can occur through the villous placenta. Previously, we have shown that although syncytiotrophoblast (ST) can be productively infected, it is more likely that HCMV reaches the fetus through breaks in the ST than through basal release of progeny virus from infected ST. Progeny virus released on the maternal side could interact back with the ST and accumulate. In pregnancy, the organ distribution of disease burden is dramatically shifted, with the placenta reported as a reservoir for some pathogens...
July 2011: Biology of Reproduction
Randi B Gombos, Denise G Hemmings
Chronic cytomegalovirus (CMV) infections are implicated in vascular diseases. Recently, we showed that an active mouse CMV (mCMV) infection in nonpregnant mice increased endothelial-dependent vasodilation in isolated mesenteric and uterine arteries. In late pregnancy, while increased vasodilation was found in mesenteric arteries from infected mice, there was a dramatic decrease in uterine arteries. Understanding the mechanisms for these vascular changes during CMV infections is important for pregnancy outcomes and long-term consequences of this chronic infection...
October 2010: American Journal of Physiology. Heart and Circulatory Physiology
Yuka Yamamoto, David M Olson, Martine van Bennekom, David N Brindley, Denise G Hemmings
An appropriate balance between uterine quiescence and activation during pregnancy is essential for a successful outcome. Sphingosine 1-phosphate (S1P), a bioactive lipid, increases cell survival, proliferation, and angiogenesis, all important to maintain the pregnancy. Indeed progesterone increases sphingosine kinase 1 (SPHK1) mRNA, which produces S1P. In contrast, induction of prostaglandin endoperoxide synthase 2 by S1P and stimulation of SPHK1 by estradiol and cytokines suggests a role for S1P in the termination of pregnancy...
March 2010: Biology of Reproduction
Alan Reed, Jill Boylston Herndon, Nail Ersoz, Takahisa Fujikawa, Denise Schain, Paul Lipori, Alan Hemming, Qin Li, Elizabeth Shenkman, Bruce Vogel
We sought to determine whether the prophylactic use of amphotericin B products (conventional amphotericin B and liposomal amphotericin B) reduces the incidence of fungal infections in high-risk liver transplant recipients, and if so, whether this lowers the cost of care. The study sample comprised 232 adult orthotopic liver transplants performed from 1994 to 2005 at a single center for patients classified as being at high risk for fungal infections. High-risk patients who received transplants with a prophylaxis regimen of amphotericin B (n=58 transplants) were compared with high-risk patients who received no prophylaxis (n=174 transplants)...
December 2007: Liver Transplantation
Shugo Mizuno, Ivan-R Zendejas, Alan-I Reed, Robin-D Kim, Richard-J Howard, Alan-W Hemming, Denise-C Schain, Consuelo Soldevila-Pico, Roberto-J Firpi, Shiro Fujita
Listeria monocytogene is a well-recognized cause of bacteremia in immunocompromised individuals, including solid organ transplant recipients, but has been rarely reported following orthotopic liver transplantation. We describe a case of listeria meningitis that occurred within a week after liver transplantation. The patient developed a severe headache that mimicked tacrolimus encephalopathy, and was subsequently diagnosed with listeria meningitis by cerebrospinal fluid culture. The infection was successfully treated with three-week course of intravenous ampicillin...
August 28, 2007: World Journal of Gastroenterology: WJG
Nicola K Hudson, Maureen O'Hara, Helen A Lacey, Jemma Corcoran, Denise G Hemmings, Mark Wareing, Philip Baker, Michael J Taggart
Sphingosine-1-phosphate (S1P) is a potent bioactive lipid that has been implicated in cardiovascular disease. The objective of the present study was to determine the vasoactive effects and underlying mechanisms of S1P on adult human maternal arteries. The isometric tensions of the omental and myometrial arteries isolated from normal pregnant women at term were assessed in response to incremental doses of S1P in the presence or absence of the nitric oxide (NO) synthase inhibitor N(G)-nitro-L-arginine methyl ester (L-NAME)...
July 2007: Biology of Reproduction
Denise G Hemmings
Two related lysosphingolipids, sphingosine 1-phosphate (S1P) and sphingosylphosphorylcholine (SPC) mediate diverse cellular responses through signals transduced by either activation of G-protein coupled receptors or possibly by acting intracellularly. Vascular responses to S1P and SPC measured both in vivo and in dissected vessels show predominantly vasoconstriction with some evidence for vasodilation. Although stimulation with S1P or SPC generally leads to similar vascular responses, the signalling pathways stimulated to produce these responses are often distinct...
April 2006: Naunyn-Schmiedeberg's Archives of Pharmacology
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