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  1. Article ; Online: Studying the Brain Monoaminergic Systems and Neurotrophic Factors in Minipigs with High and Low Tolerance to the Presence of Human.

    Bazovkina, Darya / Illarionova, Nina B / Kulikova, Elizabeth A / Bazhenova, Ekaterina Yu / Sinyakova, Nadezhda A / Khotskin, Nikita V / Nikitin, Sergey / Lankin, Vasily S / Terenina, Elena E / Trapezov, Oleg V / Kulikov, Aleksandr V

    Brain, behavior and evolution

    2023  Volume 98, Issue 3, Page(s) 148–159

    Abstract: Here, we present the first evidence for brain adaptation in pigs tolerant to the human presence, as a behavioral trait favoring domestication. The study was carried out on minipiglets from population bred at the Institute of Cytology and Genetics ( ... ...

    Abstract Here, we present the first evidence for brain adaptation in pigs tolerant to the human presence, as a behavioral trait favoring domestication. The study was carried out on minipiglets from population bred at the Institute of Cytology and Genetics (Novosibirsk, Russia). We compared the behavior, metabolism of monoaminergic neurotransmitter systems, and functional activity of the hypothalamic-pituitary-adrenal system, as well as neurotrophic markers in the brain of minipigs differing by tolerance to human presence (HT and LT - high and low tolerance). The piglets did not differ in the levels of activity in the open field test. However, the concentration of cortisol plasma was significantly higher in minipigs with a low tolerance to the presence of humans. Moreover, LT minipigs demonstrated a decreased level of serotonin in the hypothalamus and augmented levels of serotonin and its metabolite 5-HIAA in the substantia nigra as compared to HT animals. In addition, LT minipigs showed increased content of dopamine and its metabolite DOPAC in the substantia nigra and decreased dopamine level in the striatum as well as reduced content of noradrenaline in the hippocampus. Increased mRNA levels of two markers of the serotonin system - TPH2 and HTR7 genes - in the raphe nuclei and in the prefrontal cortex, respectively, were associated in minipigs with a low tolerance to human presence. However, the expression of genes regulating a dopaminergic system (COMT, DRD1, and DRD2) in HT and LT animal groups varied depending on brain structure. In addition, a decrease in the expression of genes encoding BDNF (brain-derived neurotrophic factor) and GDNF (glial cell line-derived neurotrophic factor) was revealed in LT minipigs. The results may contribute to our understanding of the initial stage of domestication in pigs.
    MeSH term(s) Humans ; Animals ; Swine ; Dopamine/metabolism ; Swine, Miniature/metabolism ; Serotonin/metabolism ; Brain/metabolism ; Norepinephrine
    Chemical Substances Dopamine (VTD58H1Z2X) ; Serotonin (333DO1RDJY) ; Norepinephrine (X4W3ENH1CV)
    Language English
    Publishing date 2023-03-13
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1199-x
    ISSN 1421-9743 ; 0006-8977
    ISSN (online) 1421-9743
    ISSN 0006-8977
    DOI 10.1159/000530116
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  2. Article ; Online: Pathogen exposure influences immune parameters around weaning in pigs reared in commercial farms.

    Hervé, Julie / Haurogné, Karine / Buchet, Arnaud / Bacou, Elodie / Mignot, Grégoire / Allard, Marie / Leblanc-Maridor, Mily / Gavaud, Solenn / Lehébel, Anne / Terenina, Elena / Mormède, Pierre / Merlot, Elodie / Belloc, Catherine / Bach, Jean-Marie / Lieubeau, Blandine

    BMC immunology

    2022  Volume 23, Issue 1, Page(s) 61

    Abstract: Background: Multiple antigenic stimulations are crucial to immune system training during early post-natal life. These stimulations can be either due to commensals, which accounts for the acquisition and maintenance of tolerance, or to pathogens, which ... ...

    Abstract Background: Multiple antigenic stimulations are crucial to immune system training during early post-natal life. These stimulations can be either due to commensals, which accounts for the acquisition and maintenance of tolerance, or to pathogens, which triggers immunity. In pig, only few works previously explored the influence of natural exposition to pathogens upon immune competence. We propose herein the results of a multicentric, field study, conducted on 265 piglets exposed to contrasted pathogen levels in their living environment. Piglets were housed in 15 different commercial farms, sorted in two groups, low (HS
    Results: Using animal-based measures, we compared the immune competence and growth performances of HS
    Conclusions: Altogether, our data, obtained in field conditions, provide evidence that early exposure to pathogens shapes the immune competence of piglets. They also document the negative impact of an overstimulation of the immune system on piglets' growth.
    Language English
    Publishing date 2022-12-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 2041500-X
    ISSN 1471-2172 ; 1471-2172
    ISSN (online) 1471-2172
    ISSN 1471-2172
    DOI 10.1186/s12865-022-00534-z
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  3. Article ; Online: On an association between fear-induced aggression and striatal-enriched protein tyrosine phosphatase (STEP) in the brain of Norway rats.

    Moskaliuk, Vitalii S / Kozhemyakina, Rimma V / Bazovkina, Darya V / Terenina, Elena / Khomenko, Tatyana M / Volcho, Konstantin P / Salakhutdinov, Nariman F / Kulikov, Alexander V / Naumenko, Vladimir S / Kulikova, Elizabeth

    Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

    2022  Volume 147, Page(s) 112667

    Abstract: Striatal-enriched protein tyrosine phosphatase (STEP) is a signal transduction protein involved in the pathogenesis of neuropathologies. A STEP inhibitor (TC-2153) has antipsychotic and antidepressant effects. Here, we evaluated the role of STEP in fear- ... ...

    Abstract Striatal-enriched protein tyrosine phosphatase (STEP) is a signal transduction protein involved in the pathogenesis of neuropathologies. A STEP inhibitor (TC-2153) has antipsychotic and antidepressant effects. Here, we evaluated the role of STEP in fear-induced aggression using Norway rats selectively bred for 90 generations for either high aggression toward humans (aggressive rats) or its absence (tame rats). We studied the effects of acute administration of TC-2153 on behavior and STEP expression in the brain of these animals and the influence of chronic treatment with TC-2153 on the behavior and STEP expression in aggressive rats in comparison with classic antidepressant fluoxetine, which is known to exert antiaggressive action. Acute TC-2153 administration decreased the aggressive reaction to humans in aggressive rats, while having no impact on the friendly behavior of tame rats. Moreover, in the elevated plus-maze test, the drug had an anxiolytic effect on both aggressive and tame rats. Aggressive rats demonstrated elevated levels of a STEP isoform (STEP46) as compared to tame animals, whereas acute TC-2153 administration significantly reduced STEP46 protein concentration in the brain of aggressive rats. Chronic treatment of aggressive rats with either TC-2153 or fluoxetine attenuated fear-induced aggression. Chronic administration of fluoxetine enhanced the exploratory activity in the elevated plus-maze test and decreased the STEP46 protein level in aggressive rats' hippocampus, whereas chronic TC-2153 administration did not affect these parameters. Thus, STEP46 can play an important role in the mechanisms of aggression and may mediate antiaggressive effects of TC-2153 and fluoxetine.
    MeSH term(s) Aggression/drug effects ; Animals ; Anti-Anxiety Agents/pharmacology ; Behavior, Animal/drug effects ; Benzothiepins/pharmacology ; Brain/drug effects ; Fear/drug effects ; Fluoxetine/pharmacology ; Hippocampus/drug effects ; Male ; Protein Tyrosine Phosphatases, Non-Receptor/antagonists & inhibitors ; Rats
    Chemical Substances 8-(trifluoromethyl)-1,2,3,4,5-benzopentathiepin-6-amine ; Anti-Anxiety Agents ; Benzothiepins ; Fluoxetine (01K63SUP8D) ; Protein Tyrosine Phosphatases, Non-Receptor (EC 3.1.3.48)
    Language English
    Publishing date 2022-01-29
    Publishing country France
    Document type Journal Article
    ZDB-ID 392415-4
    ISSN 1950-6007 ; 0753-3322 ; 0300-0893
    ISSN (online) 1950-6007
    ISSN 0753-3322 ; 0300-0893
    DOI 10.1016/j.biopha.2022.112667
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  4. Article: Genetic Factors Mediate the Impact of Chronic Stress and Subsequent Response to Novel Acute Stress.

    Terenina, Elena E / Cavigelli, Sonia / Mormede, Pierre / Zhao, Wenyuan / Parks, Cory / Lu, Lu / Jones, Byron C / Mulligan, Megan K

    Frontiers in neuroscience

    2019  Volume 13, Page(s) 438

    Abstract: Individual differences in physiological and biobehavioral adaptation to chronic stress are important predictors of health and fitness; genetic differences play an important role in this adaptation. To identify these differences we measured the biometric, ...

    Abstract Individual differences in physiological and biobehavioral adaptation to chronic stress are important predictors of health and fitness; genetic differences play an important role in this adaptation. To identify these differences we measured the biometric, neuroendocrine, and transcriptional response to stress among inbred mouse strains with varying degrees of genetic similarity, C57BL/6J (B), C57BL/6NJ (N), and DBA/2J (D). The B and D strains are highly genetically diverse whereas the B and N substrains are highly similar. Strain differences in hypothalamic-pituitary-adrenal (HPA) axis cross-sensitization were determined by plasma corticosterone (CORT) levels and hippocampal gene expression following 7-weeks of chronic mild stress (CMS) or normal housing (NH) and subsequent exposure to novel acute restraint. Fecal CORT metabolites and body and organ weights were also measured. All strains exposed to CMS had reduced heart weights, whereas body weight gain was attenuated only in B and N strains. Acute stress alone produced larger plasma CORT responses in the D and N strains compared to the B strain. CMS paired with acute stress produced cross-sensitization of the CORT response in the N strain. The N strain also had the largest number of hippocampal transcripts with up-regulated expression in response to stress. In contrast, the D strain had the largest number of transcripts with down-regulated expression following CMS and acute stress. In summary, we observed differential responses to CMS at both the physiological and molecular level among genetically diverse strains, indicating that genetic factors drive individual differences in experience-dependent regulation of the stress response.
    Language English
    Publishing date 2019-05-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2411902-7
    ISSN 1662-453X ; 1662-4548
    ISSN (online) 1662-453X
    ISSN 1662-4548
    DOI 10.3389/fnins.2019.00438
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  5. Article ; Online: Impact of Genetic Variation on Stress-Related Ethanol Consumption.

    Mulligan, Megan K / Lu, Lu / Cavigelli, Sonia A / Mormède, Pierre / Terenina, Elena / Zhao, Wenyuan / Williams, Robert W / Jones, Byron C

    Alcoholism, clinical and experimental research

    2019  Volume 43, Issue 7, Page(s) 1391–1402

    Abstract: Background: The effect of stress on alcohol consumption in humans is highly variable, and the underlying processes are not yet understood. Attempts to model a positive relationship between stress and increased ethanol (EtOH) consumption in animals have ... ...

    Abstract Background: The effect of stress on alcohol consumption in humans is highly variable, and the underlying processes are not yet understood. Attempts to model a positive relationship between stress and increased ethanol (EtOH) consumption in animals have been only modestly successful. Our hypothesis is that individual differences in stress effects on EtOH consumption are mediated by genetics.
    Methods: We measured alcohol consumption, using the drinking-in-the-dark (DID) paradigm in females from 2 inbred mouse strains, C57BL/6J (B6) and DBA/2J (D2), and 35 of their inbred progeny (the BXD family). A control group was maintained in normal housing and a stress group was exposed to chronic mild stress (CMS), consisting of unpredictable stressors over 7 weeks. These included predator, social, and environmental perturbations. Alcohol intake was measured over 16 weeks in both groups during baseline (preceding 5-week period), CMS (intervening 7-week period), and post-CMS (final 4-week period).
    Results: We detected a strong effect of CMS on alcohol intake. A few strains demonstrated CMS-related increased alcohol consumption; however, most showed decreased intake. We identified 1 nearly significant quantitative trait locus on chromosome 5 that contains the neuronal nitric oxide synthase gene (Nos1). The expression of Nos1 is frequently changed following alcohol exposure, and variants in this gene segregating among the BXD population may modulate alcohol intake in response to stress.
    Conclusions: The results we present here represent the first study to combine chronic stress and alcohol consumption in a genetic reference population of mice. Differences in susceptibility to the effects of stressful environments vis-à-vis alcohol use disorders would suggest that the differences have at least some basis in genetic constitution. We have also nominated a likely candidate gene underlying the large individual differences in effects of stress on alcohol consumption.
    MeSH term(s) Alcohol Drinking/genetics ; Alcohol Drinking/psychology ; Animals ; Chromosome Mapping ; Chromosomes/genetics ; Female ; Genetic Variation ; Mice ; Mice, Inbred C57BL ; Mice, Inbred DBA ; Nitric Oxide Synthase Type I/genetics ; Nitric Oxide Synthase Type I/metabolism ; Predatory Behavior ; Quantitative Trait Loci ; Social Environment ; Species Specificity ; Stress, Psychological/genetics ; Stress, Psychological/psychology
    Chemical Substances Nitric Oxide Synthase Type I (EC 1.14.13.39) ; Nos1 protein, mouse (EC 1.14.13.39)
    Language English
    Publishing date 2019-05-21
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 428999-7
    ISSN 1530-0277 ; 0145-6008
    ISSN (online) 1530-0277
    ISSN 0145-6008
    DOI 10.1111/acer.14073
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  6. Article ; Online: Exploring the involvement of Tac2 in the mouse hippocampal stress response through gene networking.

    Hook, Mike / Xu, Fuyi / Terenina, Elena / Zhao, Wenyuan / Starlard-Davenport, Athena / Mormede, Pierre / Jones, Byron C / Mulligan, Megan K / Lu, Lu

    Gene

    2019  Volume 696, Page(s) 176–185

    Abstract: Tachykinin 2 (Tac2) is expressed in a number of areas throughout the brain, including the hippocampus. However, knowledge about its function has been only well explored in the hypothalamus in the context of reproductive health. In this study, we ... ...

    Abstract Tachykinin 2 (Tac2) is expressed in a number of areas throughout the brain, including the hippocampus. However, knowledge about its function has been only well explored in the hypothalamus in the context of reproductive health. In this study, we identified and validated increased hippocampal Tac2 mRNA expression in response to chronic mild stress in mice. Expression quantitative trait locus (eQTL) analysis showed Tac2 is cis-regulated in the hippocampus. Using a systems genetics approach, we constructed a Tac2 co-expression network to better understand the relationship between Tac2 and the hippocampal stress response. Our network identified 69 total genes associated with Tac2, several of which encode major neuropeptides involved in hippocampal stress signaling as well as critical genes for producing neural plasticity, indicating that Tac2 is involved in these processes. Pathway analysis for the member of Tac2 gene network revealed a strong connection between Tac2 and neuroactive ligand-receptor interaction, calcium signaling pathway, as well as cardiac muscle contraction. In addition, we also identified 46 stress-related phenotypes, specifically fear conditioning response, that were significantly correlated with Tac2 expression. Our results provide evidence for Tac2 as a strong candidate gene who likely plays a role in hippocampal stress processing and neural plasticity.
    MeSH term(s) Animals ; Conditioning, Psychological/physiology ; Fear/physiology ; Female ; Gene Expression Regulation/physiology ; Gene Regulatory Networks/physiology ; Hippocampus/physiology ; Mice ; Mice, Inbred C57BL ; Models, Animal ; Neuronal Plasticity/physiology ; Protein Precursors/physiology ; RNA, Messenger/metabolism ; Stress, Psychological/genetics ; Stress, Psychological/physiopathology ; Tachykinins/physiology
    Chemical Substances Protein Precursors ; RNA, Messenger ; Tachykinins ; preprotachykinin
    Language English
    Publishing date 2019-02-12
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 391792-7
    ISSN 1879-0038 ; 0378-1119
    ISSN (online) 1879-0038
    ISSN 0378-1119
    DOI 10.1016/j.gene.2019.02.013
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  7. Article: Effects of divergent selection upon adrenocortical activity on immune traits in pig

    Hervé, Julie / Terenina, Elena / Haurogné, Karine / Bacou, Elodie / Kulikova, Elizaveta / Allard, Marie / Billon, Yvon / Bach, Jean-Marie / Mormède, Pierre / Lieubeau, Blandine

    BMC veterinary research. 2019 Dec., v. 15, no. 1

    2019  

    Abstract: BACKGROUND: The sustainability of farming and animal welfare requires the reconsideration of current selection schemes. In particular, implementation of new selection criteria related to animal health and welfare should help to produce more robust ... ...

    Abstract BACKGROUND: The sustainability of farming and animal welfare requires the reconsideration of current selection schemes. In particular, implementation of new selection criteria related to animal health and welfare should help to produce more robust animals and to reduce anti-microbial use. The hypothalamo-pituitary-adrenocortical (HPA) axis plays a major role in metabolic regulation and adaptation processes and its activity is strongly influenced by genetic factors. A positive association between HPA axis activity and robustness was recently described. To explore whether selecting pigs upon HPA axis activity could increase their robustness, a divergent selection experiment was carried out in the Large White pig breed. This allowed the generation of low (HPAlo) and high (HPAhi) responders to adrenocorticotropic hormone administration. RESULTS: In this study, we compared 23 hematologic and immune parameters of 6-week-old, HPAlo and HPAhi piglets and analysed their response to a low dose of lipopolysaccharide (LPS) two weeks later. At six weeks of age, HPAhi piglets displayed greater red blood cell and leucocyte number including CD8α+ γδ cells, cytotoxic T lymphocytes, naive T helper (Th) cells and B lymphocytes as compared to HPAlo individuals. The ability of blood cells to secrete TNFα in response to LPS ex vivo was higher for HPAhi pigs. At week eight, the inflammatory response to the LPS in vivo challenge was poorly affected by the HPA axis activity. CONCLUSIONS: Divergent selection upon HPA axis activity modulated hematologic and immune parameters in 6-week-old pigs, which may confer an advantage to HPAhi pigs at weaning. However, HPAlo and HPAhi piglets did not exhibit major differences in the parameters analysed two weeks later, i. e. in 8-week-old pigs. In conclusion, chronic exposure to high cortisol levels in HPAhi pigs does not negatively impact immunity.
    Keywords B-lymphocytes ; CD4-positive T-lymphocytes ; Large White ; animal health ; animal welfare ; chronic exposure ; corticotropin ; cortisol ; cytotoxic T-lymphocytes ; erythrocytes ; genetic factors ; immunity ; inflammation ; leukocyte count ; lipopolysaccharides ; piglets ; selection criteria ; tumor necrosis factor-alpha ; weaning
    Language English
    Dates of publication 2019-12
    Size p. 71.
    Publishing place BioMed Central
    Document type Article
    ISSN 1746-6148
    DOI 10.1186/s12917-019-1809-9
    Database NAL-Catalogue (AGRICOLA)

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  8. Article: Exploring the involvement of Tac2 in the mouse hippocampal stress response through gene networking

    Hook, Mike / Xu, Fuyi / Terenina, Elena / Zhao, Wenyuan / Starlard-Davenport, Athena / Mormede, Pierre / Jones, Byron C / Mulligan, Megan K / Lu, Lu

    Gene. 2019 May 15, v. 696

    2019  

    Abstract: Tachykinin 2 (Tac2) is expressed in a number of areas throughout the brain, including the hippocampus. However, knowledge about its function has been only well explored in the hypothalamus in the context of reproductive health. In this study, we ... ...

    Abstract Tachykinin 2 (Tac2) is expressed in a number of areas throughout the brain, including the hippocampus. However, knowledge about its function has been only well explored in the hypothalamus in the context of reproductive health. In this study, we identified and validated increased hippocampal Tac2 mRNA expression in response to chronic mild stress in mice. Expression quantitative trait locus (eQTL) analysis showed Tac2 is cis-regulated in the hippocampus. Using a systems genetics approach, we constructed a Tac2 co-expression network to better understand the relationship between Tac2 and the hippocampal stress response. Our network identified 69 total genes associated with Tac2, several of which encode major neuropeptides involved in hippocampal stress signaling as well as critical genes for producing neural plasticity, indicating that Tac2 is involved in these processes. Pathway analysis for the member of Tac2 gene network revealed a strong connection between Tac2 and neuroactive ligand-receptor interaction, calcium signaling pathway, as well as cardiac muscle contraction. In addition, we also identified 46 stress-related phenotypes, specifically fear conditioning response, that were significantly correlated with Tac2 expression. Our results provide evidence for Tac2 as a strong candidate gene who likely plays a role in hippocampal stress processing and neural plasticity.
    Keywords calcium signaling ; fearfulness ; gene expression ; genes ; hippocampus ; hypothalamus ; messenger RNA ; mice ; muscle contraction ; myocardium ; neuropeptides ; phenotype ; quantitative trait loci ; stress response
    Language English
    Dates of publication 2019-0515
    Size p. 176-185.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 391792-7
    ISSN 1879-0038 ; 0378-1119
    ISSN (online) 1879-0038
    ISSN 0378-1119
    DOI 10.1016/j.gene.2019.02.013
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  9. Article ; Online: Effects of divergent selection upon adrenocortical activity on immune traits in pig.

    Hervé, Julie / Terenina, Elena / Haurogné, Karine / Bacou, Elodie / Kulikova, Elizaveta / Allard, Marie / Billon, Yvon / Bach, Jean-Marie / Mormède, Pierre / Lieubeau, Blandine

    BMC veterinary research

    2019  Volume 15, Issue 1, Page(s) 71

    Abstract: Background: The sustainability of farming and animal welfare requires the reconsideration of current selection schemes. In particular, implementation of new selection criteria related to animal health and welfare should help to produce more robust ... ...

    Abstract Background: The sustainability of farming and animal welfare requires the reconsideration of current selection schemes. In particular, implementation of new selection criteria related to animal health and welfare should help to produce more robust animals and to reduce anti-microbial use. The hypothalamo-pituitary-adrenocortical (HPA) axis plays a major role in metabolic regulation and adaptation processes and its activity is strongly influenced by genetic factors. A positive association between HPA axis activity and robustness was recently described. To explore whether selecting pigs upon HPA axis activity could increase their robustness, a divergent selection experiment was carried out in the Large White pig breed. This allowed the generation of low (HPA
    Results: In this study, we compared 23 hematologic and immune parameters of 6-week-old, HPA
    Conclusions: Divergent selection upon HPA axis activity modulated hematologic and immune parameters in 6-week-old pigs, which may confer an advantage to HPA
    MeSH term(s) Adrenocorticotropic Hormone/pharmacology ; Animals ; Blood Cell Count/veterinary ; Female ; Hypothalamo-Hypophyseal System/drug effects ; Lipopolysaccharides/toxicity ; Pituitary-Adrenal System/drug effects ; Selection, Genetic ; Sus scrofa/blood ; Sus scrofa/genetics ; Sus scrofa/immunology ; Tumor Necrosis Factor-alpha/blood ; Tumor Necrosis Factor-alpha/metabolism
    Chemical Substances Lipopolysaccharides ; Tumor Necrosis Factor-alpha ; Adrenocorticotropic Hormone (9002-60-2)
    Language English
    Publishing date 2019-03-04
    Publishing country England
    Document type Journal Article
    ISSN 1746-6148
    ISSN (online) 1746-6148
    DOI 10.1186/s12917-019-1809-9
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  10. Article: Genetic Contribution to Initial and Progressive Alcohol Intake Among Recombinant Inbred Strains of Mice.

    Mulligan, Megan K / Zhao, Wenyuan / Dickerson, Morgan / Arends, Danny / Prins, Pjotr / Cavigelli, Sonia A / Terenina, Elena / Mormede, Pierre / Lu, Lu / Jones, Byron C

    Frontiers in genetics

    2018  Volume 9, Page(s) 370

    Abstract: We profiled individual differences in alcohol consumption upon initial exposure and during 5 weeks of voluntary alcohol intake in female mice from 39 BXD recombinant inbred strains and parents using the drinking in the dark (DID) method. In this paradigm, ...

    Abstract We profiled individual differences in alcohol consumption upon initial exposure and during 5 weeks of voluntary alcohol intake in female mice from 39 BXD recombinant inbred strains and parents using the drinking in the dark (DID) method. In this paradigm, a single bottle of 20% (v/v) alcohol was presented as the sole liquid source for 2 or 4 h starting 3 h into the dark cycle. For 3 consecutive days mice had access to alcohol for 2 h followed by a 4th day of 4 h access and 3 intervening days where alcohol was not offered. We followed this regime for 5 weeks. For most strains, 2 or 4 h alcohol intake increased over the 5-week period, with some strains demonstrating greatly increased intake. There was considerable and heritable genetic variation in alcohol consumption upon initial early and sustained weekly exposure. Two different mapping algorithms were used to identify QTLs associated with alcohol intake and only QTLs detected by both methods were considered further. Multiple suggestive QTLs for alcohol intake on chromosomes (Chrs) 2, 6, and 12 were identified for the first 4 h exposure. Suggestive QTLs for sustained intake during later weeks were identified on Chrs 4 and 8. Thirty high priority candidate genes, including
    Language English
    Publishing date 2018-09-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2606823-0
    ISSN 1664-8021
    ISSN 1664-8021
    DOI 10.3389/fgene.2018.00370
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