16p11.2 Deletion Syndrome Mice Display Sensory and Ultrasonic Vocalization Deficits During Social Interactions / Mu YANG in Autism Research, 8-5 (October 2015)  

Public ISBD [article]  inAutism Research > 8-5 (October 2015) . - p.507-521 Titre : 16p11.2 Deletion Syndrome Mice Display Sensory and Ultrasonic Vocalization Deficits During Social Interactions Type de document : Texte imprimé et/ou numérique Auteurs : Mu YANG, Auteur ; Elena J. MAHRT, Auteur ; Freeman LEWIS, Auteur ; Gillian FOLEY, Auteur ; Thomas PORTMANN, Auteur ; Ricardo E. DOLMETSCH, Auteur ; Christine V. PORTFORS, Auteur ; Jacqueline N. CRAWLEY, Auteur Article en page(s) : p.507-521 Langues : Anglais (eng) Mots-clés : mouse model of autism  16p11.2 deletion  ultrasonic vocalization  social Interaction  autism Index. décimale : PER Périodiques Résumé : Recurrent deletions and duplications at chromosomal region 16p11.2 are variably associated with speech delay, autism spectrum disorder, developmental delay, schizophrenia, and cognitive impairments. Social communication deficits are a primary diagnostic symptom of autism. Here we investigated ultrasonic vocalizations (USVs) in young adult male 16p11.2 deletion mice during a novel three-phase male–female social interaction test that detects vocalizations emitted by a male in the presence of an estrous female, how the male changes its calling when the female is suddenly absent, and the extent to which calls resume when the female returns. Strikingly fewer vocalizations were detected in two independent cohorts of 16p11.2 heterozygous deletion males (+/?) during the first exposure to an unfamiliar estrous female, as compared to wildtype littermates (+/+). When the female was removed, +/+ emitted calls, but at a much lower level, whereas +/? males called minimally. Sensory and motor abnormalities were detected in +/?, including higher nociceptive thresholds, a complete absence of acoustic startle responses, and hearing loss in all +/? as confirmed by lack of auditory brainstem responses to frequencies between 8 and 100 kHz. Stereotyped circling and backflipping appeared in a small percentage of individuals, as previously reported. However, these sensory and motor phenotypes could not directly explain the low vocalizations in 16p11.2 deletion mice, since (a) +/? males displayed normal abilities to emit vocalizations when the female was subsequently reintroduced, and (b) +/? vocalized less than +/+ to social odor cues delivered on an inanimate cotton swab. Our findings support the concept that mouse USVs in social settings represent a response to social cues, and that 16p11.2 deletion mice are deficient in their initial USVs responses to novel social cues. Autism Res 2015, 8: 507–521. © 2015 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1465 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=270 [article] 16p11.2 Deletion Syndrome Mice Display Sensory and Ultrasonic Vocalization Deficits During Social Interactions [Texte imprimé et/ou numérique] / Mu YANG, Auteur ; Elena J. MAHRT, Auteur ; Freeman LEWIS, Auteur ; Gillian FOLEY, Auteur ; Thomas PORTMANN, Auteur ; Ricardo E. DOLMETSCH, Auteur ; Christine V. PORTFORS, Auteur ; Jacqueline N. CRAWLEY, Auteur . - p.507-521. Langues : Anglais (eng) in Autism Research > 8-5 (October 2015) . - p.507-521 Mots-clés : mouse model of autism  16p11.2 deletion  ultrasonic vocalization  social Interaction  autism Index. décimale : PER Périodiques Résumé : Recurrent deletions and duplications at chromosomal region 16p11.2 are variably associated with speech delay, autism spectrum disorder, developmental delay, schizophrenia, and cognitive impairments. Social communication deficits are a primary diagnostic symptom of autism. Here we investigated ultrasonic vocalizations (USVs) in young adult male 16p11.2 deletion mice during a novel three-phase male–female social interaction test that detects vocalizations emitted by a male in the presence of an estrous female, how the male changes its calling when the female is suddenly absent, and the extent to which calls resume when the female returns. Strikingly fewer vocalizations were detected in two independent cohorts of 16p11.2 heterozygous deletion males (+/?) during the first exposure to an unfamiliar estrous female, as compared to wildtype littermates (+/+). When the female was removed, +/+ emitted calls, but at a much lower level, whereas +/? males called minimally. Sensory and motor abnormalities were detected in +/?, including higher nociceptive thresholds, a complete absence of acoustic startle responses, and hearing loss in all +/? as confirmed by lack of auditory brainstem responses to frequencies between 8 and 100 kHz. Stereotyped circling and backflipping appeared in a small percentage of individuals, as previously reported. However, these sensory and motor phenotypes could not directly explain the low vocalizations in 16p11.2 deletion mice, since (a) +/? males displayed normal abilities to emit vocalizations when the female was subsequently reintroduced, and (b) +/? vocalized less than +/+ to social odor cues delivered on an inanimate cotton swab. Our findings support the concept that mouse USVs in social settings represent a response to social cues, and that 16p11.2 deletion mice are deficient in their initial USVs responses to novel social cues. Autism Res 2015, 8: 507–521. © 2015 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1465 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=270

Behavioral Evaluation of Genetic Mouse Models of Autism / Mu YANG

Public ISBD in Autism Spectrum Disorders / David G. AMARAL Titre : Behavioral Evaluation of Genetic Mouse Models of Autism Type de document : Texte imprimé et/ou numérique Auteurs : Mu YANG, Auteur ; Maria Luisa SCATTONI, Auteur ; Kathryn K. CHADMAN, Auteur ; Jill L. SILVERMAN, Auteur ; Jacqueline N. CRAWLEY, Auteur Année de publication : 2011 Importance : p.906-934 Langues : Anglais (eng) Index. décimale : AUT-B AUT-B - L'Autisme - Ouvrages généraux et scientifiques Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=140 in Autism Spectrum Disorders / David G. AMARAL Behavioral Evaluation of Genetic Mouse Models of Autism [Texte imprimé et/ou numérique] / Mu YANG, Auteur ; Maria Luisa SCATTONI, Auteur ; Kathryn K. CHADMAN, Auteur ; Jill L. SILVERMAN, Auteur ; Jacqueline N. CRAWLEY, Auteur . - 2011 . - p.906-934. Langues : Anglais (eng) Index. décimale : AUT-B AUT-B - L'Autisme - Ouvrages généraux et scientifiques Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=140

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Haploinsufficiency of the autism-associated Shank3 gene leads to deficits in synaptic function, social interaction, and social communication / Ozlem BOZDAGI in Molecular Autism, (December 2010)  

Public ISBD [article]  inMolecular Autism > (December 2010) . - 47 p. Titre : Haploinsufficiency of the autism-associated Shank3 gene leads to deficits in synaptic function, social interaction, and social communication Type de document : Texte imprimé et/ou numérique Auteurs : Ozlem BOZDAGI, Auteur ; Takeshi SAKURAI, Auteur ; Danae PAPAPETROU, Auteur ; Xiaobin WANG, Auteur ; Dara L. DICKSTEIN, Auteur ; Nagahide TAKAHASHI, Auteur ; Yuji KAJIWARA, Auteur ; Mu YANG, Auteur ; Adam M. KATZ, Auteur ; Maria Luisa SCATTONI, Auteur ; Mark J. HARRIS, Auteur ; Roheeni SAXENA, Auteur ; Jill L. SILVERMAN, Auteur ; Jacqueline N. CRAWLEY, Auteur ; Qiang ZHOU, Auteur ; Patrick R. HOF, Auteur ; Joseph D. BUXBAUM, Auteur Année de publication : 2010 Article en page(s) : 47 p. Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : SHANK3 is a protein in the core of the postsynaptic density (PSD) and has a critical role in recruiting many key functional elements to the PSD and to the synapse, including components of alpha-amino-3-hydroxyl-5-methyl-4-isoxazole-propionic acid (AMPA), metabotropic glutamate (mGlu) and N-methyl-D-aspartic acid (NMDA) glutamate receptors, as well as cytoskeletal elements. Loss of a functional copy of the SHANK3 gene leads to the neurobehavioral manifestations of 22q13 deletion syndrome and/or to autism spectrum disorders. The goal of this study was to examine the effects of haploinsufficiency of full-length Shank3 in mice, focusing on synaptic development, transmission and plasticity, as well as on social behaviors, as a model for understanding SHANK3 haploinsufficiency in humans. Methods We used mice with a targeted disruption of Shank3 in which exons coding for the ankyrin repeat domain were deleted and expression of full-length Shank3 was disrupted. We studied synaptic transmission and plasticity by multiple methods, including patch-clamp whole cell recording, two-photon time-lapse imaging and extracellular recordings of field excitatory postsynaptic potentials. We also studied the density of GluR1-immunoreactive puncta in the CA1 stratum radiatum and carried out assessments of social behaviors. Results In Shank3 heterozygous mice, there was reduced amplitude of miniature excitatory postsynaptic currents from hippocampal CA1 pyramidal neurons and the input-output (I/O) relationship at Schaffer collateral-CA1 synapses in acute hippocampal slices was significantly depressed; both of these findings indicate a reduction in basal neurotransmission. Studies with specific inhibitors demonstrated that the decrease in basal transmission reflected reduced AMPA receptor-mediated transmission. This was further supported by the observation of reduced numbers of GluR1-immunoreactive puncta in the stratum radiatum. Long-term potentiation (LTP), induced either with theta-burst pairing (TBP) or high-frequency stimulation, was impaired in Shank3 heterozygous mice, with no significant change in long-term depression (LTD). In concordance with the LTP results, persistent expansion of spines was observed in control mice after TBP-induced LTP; however, only transient spine expansion was observed in Shank3 heterozygous mice. Male Shank3 heterozygotes displayed less social sniffing and emitted fewer ultrasonic vocalizations during interactions with estrus female mice, as compared to wild-type littermate controls. Conclusions We documented specific deficits in synaptic function and plasticity, along with reduced reciprocal social interactions in Shank3 heterozygous mice. Our results are consistent with altered synaptic development and function in Shank3 haploinsufficiency, highlighting the importance of Shank3 in synaptic function and supporting a link between deficits in synapse function and neurodevelopmental disorders. The reduced glutamatergic transmission that we observed in the Shank3 heterozygous mice represents an interesting therapeutic target in Shank3-haploinsufficiency syndromes. En ligne : http://dx.doi.org/10.1186/2040-2392-1-15 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=114 [article] Haploinsufficiency of the autism-associated Shank3 gene leads to deficits in synaptic function, social interaction, and social communication [Texte imprimé et/ou numérique] / Ozlem BOZDAGI, Auteur ; Takeshi SAKURAI, Auteur ; Danae PAPAPETROU, Auteur ; Xiaobin WANG, Auteur ; Dara L. DICKSTEIN, Auteur ; Nagahide TAKAHASHI, Auteur ; Yuji KAJIWARA, Auteur ; Mu YANG, Auteur ; Adam M. KATZ, Auteur ; Maria Luisa SCATTONI, Auteur ; Mark J. HARRIS, Auteur ; Roheeni SAXENA, Auteur ; Jill L. SILVERMAN, Auteur ; Jacqueline N. CRAWLEY, Auteur ; Qiang ZHOU, Auteur ; Patrick R. HOF, Auteur ; Joseph D. BUXBAUM, Auteur . - 2010 . - 47 p. Langues : Anglais (eng) in Molecular Autism > (December 2010) . - 47 p. Index. décimale : PER Périodiques Résumé : SHANK3 is a protein in the core of the postsynaptic density (PSD) and has a critical role in recruiting many key functional elements to the PSD and to the synapse, including components of alpha-amino-3-hydroxyl-5-methyl-4-isoxazole-propionic acid (AMPA), metabotropic glutamate (mGlu) and N-methyl-D-aspartic acid (NMDA) glutamate receptors, as well as cytoskeletal elements. Loss of a functional copy of the SHANK3 gene leads to the neurobehavioral manifestations of 22q13 deletion syndrome and/or to autism spectrum disorders. The goal of this study was to examine the effects of haploinsufficiency of full-length Shank3 in mice, focusing on synaptic development, transmission and plasticity, as well as on social behaviors, as a model for understanding SHANK3 haploinsufficiency in humans. Methods We used mice with a targeted disruption of Shank3 in which exons coding for the ankyrin repeat domain were deleted and expression of full-length Shank3 was disrupted. We studied synaptic transmission and plasticity by multiple methods, including patch-clamp whole cell recording, two-photon time-lapse imaging and extracellular recordings of field excitatory postsynaptic potentials. We also studied the density of GluR1-immunoreactive puncta in the CA1 stratum radiatum and carried out assessments of social behaviors. Results In Shank3 heterozygous mice, there was reduced amplitude of miniature excitatory postsynaptic currents from hippocampal CA1 pyramidal neurons and the input-output (I/O) relationship at Schaffer collateral-CA1 synapses in acute hippocampal slices was significantly depressed; both of these findings indicate a reduction in basal neurotransmission. Studies with specific inhibitors demonstrated that the decrease in basal transmission reflected reduced AMPA receptor-mediated transmission. This was further supported by the observation of reduced numbers of GluR1-immunoreactive puncta in the stratum radiatum. Long-term potentiation (LTP), induced either with theta-burst pairing (TBP) or high-frequency stimulation, was impaired in Shank3 heterozygous mice, with no significant change in long-term depression (LTD). In concordance with the LTP results, persistent expansion of spines was observed in control mice after TBP-induced LTP; however, only transient spine expansion was observed in Shank3 heterozygous mice. Male Shank3 heterozygotes displayed less social sniffing and emitted fewer ultrasonic vocalizations during interactions with estrus female mice, as compared to wild-type littermate controls. Conclusions We documented specific deficits in synaptic function and plasticity, along with reduced reciprocal social interactions in Shank3 heterozygous mice. Our results are consistent with altered synaptic development and function in Shank3 haploinsufficiency, highlighting the importance of Shank3 in synaptic function and supporting a link between deficits in synapse function and neurodevelopmental disorders. The reduced glutamatergic transmission that we observed in the Shank3 heterozygous mice represents an interesting therapeutic target in Shank3-haploinsufficiency syndromes. En ligne : http://dx.doi.org/10.1186/2040-2392-1-15 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=114

Social peers rescue autism-relevant sociability deficits in adolescent mice / Mu YANG in Autism Research, 4-1 (February 2011)  

Public ISBD [article]  inAutism Research > 4-1 (February 2011) . - p.17-27 Titre : Social peers rescue autism-relevant sociability deficits in adolescent mice Type de document : Texte imprimé et/ou numérique Auteurs : Mu YANG, Auteur ; Kayla PERRY, Auteur ; Michael D. WEBER, Auteur ; Adam M. KATZ, Auteur ; Jacqueline N. CRAWLEY, Auteur Année de publication : 2011 Article en page(s) : p.17-27 Langues : Anglais (eng) Mots-clés : autism  BTBR inbred strain  mouse model  peer enrichment  social enrichment  behavioral intervention Index. décimale : PER Périodiques Résumé : Behavioral therapies are currently the most effective interventions for treating the diagnostic symptoms of autism. We employed a mouse model of autism to evaluate components of behavioral interventions that improve sociability in mice. BTBR T+tf/J (BTBR) is an inbred mouse strain that exhibits prominent behavioral phenotypes with face validity to all three diagnostic symptom categories of autism, including robust and well-replicated deficits in social approach and reciprocal social interactions. To investigate the role of peer interactions in the development of sociability, BTBR juvenile mice were reared in the same home cage with juvenile mice of a highly social inbred strain, C57BL/6J (B6). Subject mice were tested as young adults for sociability and repetitive behaviors. B6 controls reared with B6 showed their strain-typical high sociability. BTBR controls reared with BTBR showed their strain-typical lack of sociability. In contrast, BTBR reared with B6 as juveniles showed significant sociability as young adults. A 20-day intervention was as effective as a 40-day intervention for improving social approach behavior. High levels of repetitive self-grooming in BTBR were not rescued by peer-rearing with B6, indicating specificity of the intervention to the social domain. These results from a robust mouse model of autism support the interpretation that social enrichment with juvenile peers is a beneficial intervention for improving adult outcome in the social domain. This novel paradigm may prove useful for discovering factors that are essential for effective behavioral treatments, and biological mechanisms underlying effective behavioral interventions. En ligne : http://dx.doi.org/10.1002/aur.163 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=118 [article] Social peers rescue autism-relevant sociability deficits in adolescent mice [Texte imprimé et/ou numérique] / Mu YANG, Auteur ; Kayla PERRY, Auteur ; Michael D. WEBER, Auteur ; Adam M. KATZ, Auteur ; Jacqueline N. CRAWLEY, Auteur . - 2011 . - p.17-27. Langues : Anglais (eng) in Autism Research > 4-1 (February 2011) . - p.17-27 Mots-clés : autism  BTBR inbred strain  mouse model  peer enrichment  social enrichment  behavioral intervention Index. décimale : PER Périodiques Résumé : Behavioral therapies are currently the most effective interventions for treating the diagnostic symptoms of autism. We employed a mouse model of autism to evaluate components of behavioral interventions that improve sociability in mice. BTBR T+tf/J (BTBR) is an inbred mouse strain that exhibits prominent behavioral phenotypes with face validity to all three diagnostic symptom categories of autism, including robust and well-replicated deficits in social approach and reciprocal social interactions. To investigate the role of peer interactions in the development of sociability, BTBR juvenile mice were reared in the same home cage with juvenile mice of a highly social inbred strain, C57BL/6J (B6). Subject mice were tested as young adults for sociability and repetitive behaviors. B6 controls reared with B6 showed their strain-typical high sociability. BTBR controls reared with BTBR showed their strain-typical lack of sociability. In contrast, BTBR reared with B6 as juveniles showed significant sociability as young adults. A 20-day intervention was as effective as a 40-day intervention for improving social approach behavior. High levels of repetitive self-grooming in BTBR were not rescued by peer-rearing with B6, indicating specificity of the intervention to the social domain. These results from a robust mouse model of autism support the interpretation that social enrichment with juvenile peers is a beneficial intervention for improving adult outcome in the social domain. This novel paradigm may prove useful for discovering factors that are essential for effective behavioral treatments, and biological mechanisms underlying effective behavioral interventions. En ligne : http://dx.doi.org/10.1002/aur.163 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=118

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