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https://www.readbyqxmd.com/read/28428867/adaptative-evolution-of-the-vkorc1-gene-in-mus-musculus-domesticus-is-influenced-by-the-selective-pressure-of-anticoagulant-rodenticides
#1
Joffrey Goulois, Véronique Lambert, Lionel Legros, Etienne Benoit, Virginie Lattard
Anticoagulant rodenticides are commonly used to control rodent pests worldwide. They specifically inhibit the vitamin K epoxide reductase (VKORC1), which is an enzyme encoded by the Vkorc1 gene, involved in the recycling of vitamin K. Therefore, they prevent blood clotting. Numerous mutations of Vkorc1 gene were reported in rodents, and some are involved in the resistant to rodenticides phenotype. Two hundred and sixty-six mice tails were received from 65 different locations in France. Coding sequences of Vkorc1 gene were sequenced in order to detect mutations...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28425496/3-4-methylenedioxymethamphetamine-increases-affiliative-behaviors-in-squirrel-monkeys-in-a-serotonin-2a-receptor-dependent-manner
#2
Elizabeth G Pitts, Adelaide R Minerva, Erika B Oliver, Jordan N Kohn, Meghan T Logun, Agnieszka Sulima, Kenner C Rice, Leonard L Howell
3,4-methylenedioxymethamphetamine (MDMA) increases sociality in humans and animals. Release of serotonin (5-HT) is thought to play an important role in the increase in social behaviors, but the mechanisms underlying these effects are poorly understood. Despite the advantages of nonhuman primate models, no studies have examined the mechanisms of the social effects of MDMA in nonhuman primates. The behavior and vocalizations of four group-housed squirrel monkeys were examined following administration of MDMA, its enantiomers, and methamphetamine...
April 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28422070/one-year-follow-up-risk-assessment-in-skh-1-mice-and-wounds-treated-with-an-argon-plasma-jet
#3
Anke Schmidt, Thomas von Woedtke, Jan Stenzel, Tobias Lindner, Stefan Polei, Brigitte Vollmar, Sander Bekeschus
Multiple evidence in animal models and in humans suggest a beneficial role of cold physical plasma in wound treatment. Yet, risk assessment studies are important to further foster therapeutic advancement and acceptance of cold plasma in clinics. Accordingly, we investigated the longterm side effects of repetitive plasma treatment over 14 consecutive days in a rodent full-thickness ear wound model. Subsequently, animals were housed for 350 days and sacrificed thereafter. In blood, systemic changes of the proinflammatory cytokines interleukin 1β and tumor necrosis factor α were absent...
April 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28418764/disease-surveillance-of-california-ground-squirrels-spermophilus-beecheyi-in-a-drive-through-zoo-in-oregon-usa
#4
Julia Ter Beest, Andrew Cushing, Modesto McClean, Wendy Hsu, Robert Bildfell
Rodents and other small wild mammals are often considered to be pests and vectors for disease in zoos that house small populations of valuable threatened and endangered animals. In 2005, three nonhuman primates at a drive-through zoo in Oregon, USA, acquired tularemia from an unknown source. Due to an abundance of California ground squirrels ( Spermophilus beecheyi ) on zoo grounds, we instituted serosurveillance of this species from July through September 2008 to determine the prevalence of antibodies against pathogens considered to be potentially transmissible to collection animals...
April 18, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28418312/exposure-characteristics-of-hantavirus-pulmonary-syndrome-patients-united-states-1993-2015
#5
Annabelle de St Maurice, Elizabeth Ervin, Mare Schumacher, Hayley Yaglom, Elizabeth VinHatton, Sandra Melman, Ken Komatsu, Jennifer House, Dallin Peterson, Danielle Buttke, Alison Ryan, Del Yazzie, Craig Manning, Paul Ettestad, Pierre Rollin, Barbara Knust
Those at highest risk are persons in occupations with potential for rodent exposure and American Indian women 40--64 years of age.
May 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28407853/effects-of-environmental-enrichment-on-reproductive-performance-and-quantity-and-morphology-of-cumulus-oocyte-complexes-obtained-from-rattus-norvegicus
#6
Joana Fisch, Iáskara Vieira de Oliveira, Juliana Fank, Lia Mara Gomes Paim, Marília Remuzzi Zandoná, Eliana Franco Lopes, Fernanda Bastos de Mello, Alexandre Tavares Duarte de Oliveira
Several researchers have observed that environmental enrichment (EE) can be effective in reducing stressful conditions and abnormal behavior and may provide better reproductive performance in rodents. In this context, this study aimed to evaluate the reproductive performance of Wistar rats reared in three different housing conditions. Animals were separated into breeding pairs, one pair per cage and pairs randomly assigned to three experimental groups (ten couples per group): control group were provided cages without any environmental enrichment; PVC group with PVC pipe; and cardboard roll group with a commercially available cardboard tube...
May 2017: Theriogenology
https://www.readbyqxmd.com/read/28399925/human-serum-rnase-l-level-is-inversely-associated-with-metabolic-syndrome-and-age
#7
Yi-Ting Wang, Ping-Huei Tseng, Chi-Ling Chen, Der-Sheng Han, Yu-Chiao Chi, Fen-Yu Tseng, Wei-Shiung Yang
BACKGROUND: Ribonuclease-L (RNase-L) was known to be a ubiquitous enzyme involved in several cellular functions, especially innate immunity. It was recently shown to participate in adipogenesis in rodents. Here, we developed a method to measure serum levels of RNase-L and analyzed the relationship between RNase-L and metabolic syndrome (MetS). METHODS: A total of 396 subjects were recruited from a health check-up program. An in-house RNase-L immunoassay was developed...
April 11, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28397512/evaluation-of-perlite-wood-shavings-and-corncobs-for-bedding-material-in-rats
#8
Fatih Yildirim, Betül A Yildirim, Ahmet Yildiz, Kübra A Kapakin Terim, Seyda Cengiz, Selçuk Özdemir
Bedding material, which is a significant part of rodent housing, affects the health and well-being of laboratory animals. The aim of this study was to evaluate perlite as a bedding material for rodents and to compare it with wood shavings, expanded perlite and corncobs. The animals used in this experiment were 48 male and 48 female Sprague-Dawley rats. The bedding materials collected from experimental groups were analysed microbiologically. Blood samples from rats were subjected to biochemical analysis for catalase, glutathione, glutathione peroxidase, malondialdehyde, superoxide and dismutase, and foot pad skins of rats were subjected to histopathological examination...
March 30, 2017: Journal of the South African Veterinary Association
https://www.readbyqxmd.com/read/28378204/a-schizophrenia-relevant-5-choice-serial-reaction-time-task-for-mice-assessing-broad-monitoring-distractibility-and-impulsivity
#9
Huiping Huang, Simone Guadagna, Maddalena Mereu, Mariasole Ciampoli, Giacomo Pruzzo, Theresa Ballard, Francesco Papaleo
The 5-Choice Serial Reaction Time Task (5-CSRTT) is an automated test for rodents allowing the assessment of multiple cognitive measures. Originally designed to assess cognitive deficits relevant to attention deficit hyperactivity disorder, it has been widely used in the investigation of neural systems of attention. In the current study, we have set up a modified version, which reduced the training phase to only 8-9 days with minimal food deprivation and without single-housing. Furthermore, based on evidence that patients with schizophrenia are more impaired in broad monitoring abilities than in sustained attention, we successfully developed a protocol replicating the Spatial Attentional Resource Allocation Task (SARAT), used in humans to assess broad monitoring...
April 5, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28377259/effects-of-social-deprivation-on-social-and-depressive-like-behaviors-and-the-numbers-of-oxytocin-expressing-neurons-in-rats
#10
Yaminah D Gilles, Eva K Polston
Social isolation is a known stressor that negatively impacts the well-being of social species. In rodents, social deprivation experienced either before or after weaning profoundly impacts adult behavioral and neuroendocrine profiles. This study compared the effects of post-natal and post-weaning social deprivation on behavioral profiles and hypothalamic oxytocin (OT) neurons. Male and female Sprague-Dawley rats were assigned to two post-natal groups, maternally separated (MS) or non-MS. MS pups were separated from their mothers for 4h daily during post-natal days 2-21 while non-MS litters remained undisturbed...
April 1, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28363078/plasma-thyroxine-t4-concentration-in-zoo-kept-black-tailed-prairie-dogs-cynomys-ludovicianus
#11
David Eshar, Melissa R Nau, Lisa M Pohlman
This study was conducted to determine plasma thyroxine (T4) concentrations in zoo-kept black-tailed prairie dogs ( Cynomys ludovicianus ). Thirty-one healthy prairie dogs of both sexes were studied as part of their annual clinical health evaluation, performed under general isoflurane anesthesia. Each animal underwent a complete physical examination, complete blood count, plasma biochemistry, and venous blood gas analysis. Heparinized venous blood samples were collected individually and processed for plasma T4 analysis using a veterinary biochemistry analyzer...
March 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28353686/genetic-structure-and-invasion-history-of-the-house-mouse-mus-musculus-domesticus-in-senegal-west-africa-a-legacy-of-colonial-and-contemporary-times
#12
C Lippens, A Estoup, M K Hima, A Loiseau, C Tatard, A Dalecky, K Bâ, M Kane, M Diallo, A Sow, Y Niang, S Piry, K Berthier, R Leblois, J-M Duplantier, C Brouat
Knowledge of the genetic make-up and demographic history of invasive populations is critical to understand invasion mechanisms. Commensal rodents are ideal models to study whether complex invasion histories are typical of introductions involving human activities. The house mouse Mus musculus domesticus is a major invasive synanthropic rodent originating from South-West Asia. It has been largely studied in Europe and on several remote islands, but the genetic structure and invasion history of this taxon have been little investigated in several continental areas, including West Africa...
March 29, 2017: Heredity
https://www.readbyqxmd.com/read/28350867/dissociation-between-skin-test-reactivity-and-anti-aeroallergen-ige-determinants-among-urban-brazilian-children
#13
Neuza M Alcantara-Neves, Rafael V Veiga, João C M Ponte, Sérgio S da Cunha, Silvia M Simões, Álvaro A Cruz, Maria Yazdanbakhsh, Sheila M Matos, Thiago Magalhães Silva, Camila A Figueiredo, Lain C Pontes-de-Carvalho, Laura C Rodrigues, Rosemeire L Fiaccone, Philip J Cooper, Maurício L Barreto
BACKGROUND: The dissociation between specific IgE and skin prick test reactivity to aeroallergens, a common finding in populations living in low and middle-income countries, has important implications for the diagnosis and treatment of allergic diseases. Few studies have investigated the determinants of this dissociation. In the present study, we explored potential factors explaining this dissociation in children living in an urban area of Northeast Brazil, focusing in particular on factors associated with poor hygiene...
2017: PloS One
https://www.readbyqxmd.com/read/28338428/a-surgical-device-to-study-the-efficacy-of-bioengineered-skin-substitutes-in-mice-wound-healing-models
#14
Marc G Jeschke, Ali-Reza Sadri, Cassandra Belo, Saeid Amini-Nik
Due to the poor regenerative capacity of adult mammalian skin, there is a need to develop effective skin substitutes for promoting skin regeneration after a severe wound. However, the complexity of skin biology has made it difficult to enable perfect regeneration of skin. Thus, animal models are being used to test potential skin substitutes. Murine models are valuable but their healing process involves dermal contraction. We have developed a device called a dome that is able to eliminate the contraction effect of rodent skin while simultaneously housing a bioengineered skin graft...
April 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28331347/environmental-triggers-and-avoidance-in-the-management-of-asthma
#15
REVIEW
Clarisse Gautier, Denis Charpin
Identifying asthma triggers forms the basis of environmental secondary prevention. These triggers may be allergenic or nonallergenic. Allergenic triggers include indoor allergens, such as house dust mites (HDMs), molds, pets, cockroaches, and rodents, and outdoor allergens, such as pollens and molds. Clinical observations provide support for the role of HDM exposure as a trigger, although avoidance studies provide conflicting results. Molds and their metabolic products are now considered to be triggers of asthma attacks...
2017: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/28315647/a-device-that-allows-rodents-to-behaviorally-thermoregulate-when-housed-in-vivariums
#16
Christopher J Gordon, Earl T Puckett, Elizabeth S Repasky, Andrew F M Johnstone
Laboratories and vivariums typically are maintained at ambient temperatures of 20 to 24 °C, leading to cold stress in mice. When mice are inactive and sleeping during the light phase, their zone of thermoneutrality associated with a basal metabolic rate is 30 to 32 °C. If given a choice, mice will use thermoregulatory behavior to seek out thermoneutral temperatures during the light phase. The cold stress of a vivarium can be problematic to researchers requiring an animal model that is not stressed metabolically...
March 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28279169/effect-of-skilled-reaching-training-and-enriched-environment-on-generation-of-oligodendrocytes-in-the-adult-sensorimotor-cortex-and-corpus-callosum
#17
Silke Keiner, Fanny Niv, Susanne Neumann, Tanja Steinbach, Christian Schmeer, Katrin Hornung, Yvonne Schlenker, Martin Förster, Otto W Witte, Christoph Redecker
BACKGROUND: Increased motor activity or social interactions through enriched environment are strong stimulators of grey and white matter plasticity in the adult rodent brain. In the present study we evaluated whether specific reaching training of the dominant forelimb (RT) and stimulation of unspecific motor activity through enriched environment (EE) influence the generation of distinct oligodendrocyte subpopulations in the sensorimotor cortex and corpus callosum of the adult rat brain...
March 9, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28278315/biochemical-effects-of-exercise-on-a-fasciocutaneous-flap-in-a-rat-model
#18
Edita Aksamitiene, Adam L Baker, Sudeep Roy, Salini Hota, Li-Hui Zhang, Julianna Rodin, Kealan Hobelmann, Jan B Hoek, Edmund A Pribitkin
Importance: An overwhelming amount of data suggest that cardiovascular exercise has a positive effect on the mind and body, although the precise mechanism is not always clear. Objective: To assess the clinical and biochemical effects of voluntary cardiovascular exercise on pedicled flaps in a rodent model. Design, Setting, and Participants: Eighteen adult Sprague-Dawley male rats were randomized into a resting animal group (RAG) (n=9) and an exercise animal group (EAG) (n=9) for 14 days (July 23, 2013, through July 30, 2013)...
March 9, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/28276805/the-protective-effects-of-social-bonding-on-behavioral-and-pituitary-adrenal-axis-reactivity-to-chronic-mild-stress-in-prairie-voles
#19
Neal McNeal, Katherine M Appleton, Alan Kim Johnson, Melissa-Ann L Scotti, Joshua Wardwell, Rachel Murphy, Christina Bishop, Alison Knecht, Angela J Grippo
Positive social interactions may protect against stress. This study investigated the beneficial effects of pairing with a social partner on behaviors and neuroendocrine function in response to chronic mild stress (CMS) in 13 prairie vole pairs. Following 5 days of social bonding, male and female prairie voles were exposed to 10 days of CMS (mild, unpredictable stressors of varying durations, for instance, strobe light, white noise, and damp bedding), housed with either the social partner (paired group) or individually (isolated group)...
March 5, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28270754/interaction-effect-of-social-isolation-and-high-dose-corticosteroid-on-neurogenesis-and-emotional-behavior
#20
Jackie N-M Chan, Jada C-D Lee, Sylvia S P Lee, Katy K Y Hui, Alan H L Chan, Timothy K-H Fung, Dalinda I Sánchez-Vidaña, Benson W-M Lau, Shirley P-C Ngai
Hypercortisolemia is one of the clinical features found in depressed patients. This clinical feature has been mimicked in animal studies via application of exogenous corticosterone (CORT). Previous studies suggested that CORT can induce behavioral disturbance in anxious-depressive like behavior, which is associated with suppressed neurogenesis. Hippocampal neurogenesis plays an important role in adult cognitive and behavioral regulation. Its suppression may thus lead to neuropsychiatric disorders. Similar to the effects of CORT on the animals' depression-like behaviors and neurogenesis, social deprivation has been regarded as one factor that predicts poor prognosis in depression...
2017: Frontiers in Behavioral Neuroscience
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