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Comparison of the neuron bodies number in different gyrus of brain cortex of malnourished dogs | Efeitos comportamentais da exposição aguda ao gliposato em camundongos Balb/c machos e fêmeas
2013
Andréia de Oliveira Joaquim | Helenice de Souza Spinosa | Daclé Juliane Macrini | Paula Andreotti Rodrigues | Esther Lopes Ricci | Thais Spaggiari Artiolli | Natália Moreira | Ivana Barbosa Suffredini | Maria Martha Bernardi
<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG /> </o:OfficeDocumentSettings> </xml><![endif]--> <p class="MsoNormal" style="text-align: justify;"><span style="mso-ansi-language: EN-US;" lang="EN-US">The aim of this study was to verify the quantitative alterations of the neurons bodies in the brain cortex of malnourished dogs. Seven brains of mongrel male dogs that were previously diagnosticated as malnourished were collected. The dogs had similar constitutionalist characteristics of cranium (mesaquicefalus). It was chosen different gyrus of the brain cortex to been study; those gyrus were sampled, prepared according to conventional histological technique and stained by modified cresil violet, for becoming evident the neurons bodies. The slides were analyzed with the 20x ocular. Our results indicate an expressive reduction in the number of neuron bodies in malnourished dogs (10,8), when compared with dogs in normal nutrition conditions (16,35). In conclusion, it’s possible that the malnutrition leads to a reduction of neurons bodies in brain cortex of dogs, when compared to those with normal condition of nutrition.</span></p> <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:HyphenationZone>21</w:HyphenationZone> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>PT-BR</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:EnableOpenTypeKerning /> <w:DontFlipMirrorIndents /> <w:OverrideTableStyleHps /> </w:Compatibility> 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mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-fareast-language:EN-US;} </style> <![endif]--> | <p>Neste trabalho investigou-se em camundongos BALB/c, machos e fêmeas, os efeitos comportamentais da exposição aguda a uma formulação comercial do glifosato (GF) em uma dose duas vezes maior que a dose sem efeito observado(NOAEL). A neurotoxicidade aguda ao GF foi determinada por meio da análise da atividade geral, de parâmetros sensoriais, psicomotores, do sistema nervoso central e autônomo em machos e fêmeas. Os efeitos exploratório, de ansiedade e depressão induzidos pelo GF foram observados no campo aberto, labirinto em cruz elevado e no teste da suspensão da cauda, respectivamente. O GF promoveu poucos sinais de neurotoxicidade. A capacidade exploratória de fêmeas foi reduzida no campo aberto. Nenhum sinal de ansiedade foi detectado tanto em machos como em fêmeas no labirinto em cruz elevado, porém, notou-se redução da exploratória neste aparelho. No teste de suspensão da cauda tanto as fêmeas como machos mostraram aumento no tempo de imobilidade. Não foi observado neste caso interação entre sexo e tratamento. Concluiu-se que a exposição ao dobro da dose da NOAEL do GF induziu poucos sinais de neurotoxicidade e poucos efeitos sexualmente dimórficos em camundongos machos e fêmeas.</p>
Show more [+] Less [-]Efeitos comportamentais da exposição aguda ao gliposato em camundongos Balb/c machos e fêmeas
2012
Andréia de Oliveira Joaquim | Helenice de Souza Spinosa | Daclé Juliane Macrini | Paula Andreotti Rodrigues | Esther Lopes Ricci | Thais Spaggiari Artiolli | Natália Moreira | Ivana Barbosa Suffredini | Maria Martha Bernardi
Neste trabalho investigou-se em camundongos BALB/c, machos e fêmeas, os efeitos comportamentais da exposição aguda a uma formulação comercial do glifosato (GF) em uma dose duas vezes maior que a dose sem efeito observado(NOAEL). A neurotoxicidade aguda ao GF foi determinada por meio da análise da atividade geral, de parâmetros sensoriais, psicomotores, do sistema nervoso central e autônomo em machos e fêmeas. Os efeitos exploratório, de ansiedade e depressão induzidos pelo GF foram observados no campo aberto, labirinto em cruz elevado e no teste da suspensão da cauda, respectivamente. O GF promoveu poucos sinais de neurotoxicidade. A capacidade exploratória de fêmeas foi reduzida no campo aberto. Nenhum sinal de ansiedade foi detectado tanto em machos como em fêmeas no labirinto em cruz elevado, porém, notou-se redução da exploratória neste aparelho. No teste de suspensão da cauda tanto as fêmeas como machos mostraram aumento no tempo de imobilidade. Não foi observado neste caso interação entre sexo e tratamento. Concluiu-se que a exposição ao dobro da dose da NOAEL do GF induziu poucos sinais de neurotoxicidade e poucos efeitos sexualmente dimórficos em camundongos machos e fêmeas.
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