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1.
Braz. j. med. biol. res ; 52(5): e8334, 2019. graf
Article in English | LILACS | ID: biblio-1001529

ABSTRACT

Studies have shown that an injection with the histamine H4 receptor agonist VUF-8430 modulates emotional memory processes. In the present study, the aim was to verify if intraperitoneal (ip) injection of VUF-8430 (500 ng/kg) in mice affects the synthesis of proteins required for memory consolidation processes by activating the phosphorylation of CREB (pCREB) in classical structures linked to emotional memory (prefrontal cortex, amygdala, and hippocampus) and the cerebellar vermis, a structure that has also been recently implicated in emotional memory. The results obtained using western blot analysis demonstrated that VUF-8430 induced a decrease in CREB and pCREB levels in the cerebellar vermis and prefrontal cortex, suggesting that this dose impaired the activation of cell signaling pathways in these structures. There was no change in protein expression in the amygdala and hippocampus. Our results are preliminary, and further investigations are needed to investigate the role of the H4 receptors in the central nervous system.


Subject(s)
Animals , Male , Rabbits , Prefrontal Cortex/metabolism , Cerebellar Vermis/metabolism , Receptors, Histamine H4/metabolism , Memory/physiology , Phosphorylation , Stress, Physiological , Prefrontal Cortex/drug effects , Disease Models, Animal , Emotions , Cerebellar Vermis/drug effects , Memory Consolidation/physiology , Hippocampus , Histamine Antagonists/pharmacology
2.
J. bras. ginecol ; 101(11/12): 535-9, nov.-dez. 1991. ilus, graf
Article in Portuguese | LILACS | ID: lil-196826

ABSTRACT

Os autores estudaram os efeitos da administraçäo do promestriene por via vaginal em mulheres na pós-menopausa. Um grupo de 14 pacientes recebeu a droga em regime de administraçäo diária, contínua, por 60 dias. Um segundo grupo, com 16 pacientes, foi tratado em regime de administraçäo diária, contínua, por 20 dias e, a seguir, três vezes por semana por mais 40 dias. Analisaram a evoluçäo da colpocitologia hormonal e dos níveis de gonadotrofinas, bem como a tolerabilidade e eficácia da medicaçao ao longo do estudo. Concluem ser o promestriene um agente antiatrófico vaginal efetivo, sem produzir alteraçöes dos níveis plasmáticos de gonadotrofinas e estradiol. Nao observaram diferenças estatísticas nos dois regimes de administraçäo estudados.


Subject(s)
Humans , Female , Adult , Middle Aged , Estradiol Congeners/pharmacology , Estradiol/analogs & derivatives , Gonadotropins/blood , Menopause , Steroids/pharmacology , Vagina/drug effects , Administration, Intravaginal , Atrophy/drug therapy , Drug Tolerance , Estradiol Congeners/administration & dosage , Estradiol Congeners/therapeutic use , Estradiol/blood , Steroids/administration & dosage , Steroids/therapeutic use , Treatment Outcome , Vagina/pathology , Vaginitis/drug therapy
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