ABSTRACT
Melatonin is an indolamine produced by the pineal gland and it can exert a potent antioxidant effect. Its free radical scavenger properties have been used to advantage in different organ transplants in animal experiments. Several concentrations and administration pathways have been tested and melatonin has shown encouraging beneficial results in many transplants of organs such as the liver, lungs, heart, pancreas, and kidneys. The objective of the present study was to review the scientific literature regarding the use of melatonin in ovary transplantation. A systematic review following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement was carried out using the Cochrane and Pubmed databases and employing the terms 'melatonin' AND 'ovary' AND 'transplantation.' After analysis, 5 articles were extracted addressing melatonin use in ovary transplants and involving 503 animals. Melatonin enhanced various graft aspects like morphology, apoptosis, immunological reaction, revascularization, oxidative stress, and survival rate. Melatonin's antioxidative and antiapoptotic properties seemingly produce positive effects on ovarian graft activity. Despite the promising results, further studies in humans need to be conducted to consolidate its use, as ovary transplantation for fertility preservation is gradually being moved from the experimental stage to a clinical setting.
Subject(s)
Melatonin/metabolism , Organ Transplantation , Ovary/metabolism , Ovary/transplantation , Animals , Antioxidants/metabolism , Antioxidants/pharmacology , Apoptosis/drug effects , Female , Graft Survival/drug effects , Humans , Melatonin/pharmacology , Neovascularization, Physiologic/drug effects , Ovary/drug effects , Oxidative Stress/drug effectsABSTRACT
Apresenta-se uma proposta pedagógica, não habitual nas escolas médicas tradicionais, que introduz precocemente o aluno de graduação em um estágio de observação da prática médica. Alunos do segundo semestre do curso médico preparados para fazer uma observação participativa do atendimento aos pacientes e entrevistas com profissionais de saúde, desenvolveram a aprendizagem e a reflexão sobre comunicação do profissional de saúde com sua clientela a partir dos fatos observados. Resultados indicam que a experiência com a disciplina propiciou aos alunos um estilo próprio de entrevistar e abordar o paciente, que enfatiza a integridade do ser e as representações do seu mundo, em contraposição à comunicação médico-paciente que acontece durante a anamnese estruturada e na consulta médica feita na rotina ambulatorial com grande demanda.
Subject(s)
Humans , Male , Female , Curriculum/trends , Education, Medical , Interviews as TopicABSTRACT
Subcapsular hematoma of the graft is an underreported complication of liver transplantation (LT). Among 408 LT performed from September 1, 1985, to September 1, 2000, eight patients developed a subcapsular hematoma within 30 days after LT (8/408 = 2.0%). Among the six early cases observed, five required further surgical approaches due to hematoma progression, rupture, and hemorrhage. One patient underwent liver retransplantation due to uncontrollable hepatic hemorrhage. The two more recent cases were successfully treated by early opening of the Glisson's capsule with hemostasis of the hepatic raw bleeding surface. The five patients who developed acute renal failure required dialysis. Three patients died during hospitalization. Among the survivors, two were discharged on the postoperative (PO) day 15; the others on PO day 37, 38, and 56. In conclusion, subcapsular hematoma of the graft is a potentially serious complication of LT that may produce severe hemorrhage, shock, and in extreme cases, graft loss or even death. The severity of the complication is related to the extension of the decapsulated area of the graft. An early surgical approach with intentional opening of the hematoma before progression of the lesion seems to facilitate hemostasis and improve results.