Résumé
This study examined the mechanism of action of a local anesthetic, lidocaine.HCl. Energy transfer between the surface fluorescent probe, 1-anilinonaphthalene-8-sulfonic acid, and the hydrophobic fluorescent probe, 1,3-di(1-pyrenyl) propane, was used to determine the effect of lidocaine.HCl on the thickness (D) of the synaptosomal plasma membrane vesicles (SPMV) isolated from the bovine cerebral cortex, and liposomes of the total lipids (SPMVTL) and phospholipids (SPMVPL) extracted from the SPMV. The thickness (D) of the intact SPMV, SPMVTL and SPMVPL were 1.044+/-0.008, 0.914+/-0.005 and 0.890+/-0.003 (arbitrary units, n=5) at 37degrees C (pH 7.4), respectively. Lidocaine.HCl decreased the thickness of the neuronal and model membrane lipid bilayers in a dose-dependent manner with a significant decrease in the thickness, even at 0.1 mM. The decreasing effect of lidocaine.HCl on the membrane thickness might be responsible for some, but not all of its anesthetic action.
Sujets)
Anilino-naphtalènesulfonates , Membrane cellulaire , Cortex cérébral , Transfert d'énergie , Double couche lipidique , Liposomes , Membranes , Neurones , Phospholipides , PropaneRésumé
Peripartum cardiomyopahty(PPCM) is an uncommon myocardial disease arising in the last month of pregnancy or within 5 months after delivery, in the absence of obvious cause and without prior evidence of heart disease. The risk of recurrence of PPCM is considered low when left ventricular size and function return to normal. But we experienced a case of peripartum cardiomyopathy recurred in subsequent pregnancy despite the return to normal heart size and function. This case was summarized here with a brief review of the related literatures.
Sujets)
Grossesse , Cardiomyopathies , Coeur , Cardiopathies , Période de péripartum , RécidiveRésumé
A 35-year-old multigravida woman received triple marker screening tests in 16weeks 2days of gestation. MSAFP and MShCG values were increased, whereas MSuE3 value was decreased. So we performed amniocentesis for karyotyping and confirmed male fetus with 47,XYY,inv(9)(p11:q13). A neonatal survey showed the incidence of XYY male to be approximately 1:1000, the majority of cases are phenotypically normal. XYY males are taller than normal and show delayed mental development. A pericenteric inversion of chromosome 9 that extends from p11 to q13 is considered a normal chromosome variant, but the carrier is at high risk to produce abnormal offspring. As she did not want to terminate her pregnancy, she delivered vaginally in 39weeks 6days of gestation. As a result of physical examination, the neonate showed a normal phenotype. We report it with brief review.
Sujets)
Adulte , Femelle , Humains , Nouveau-né , Mâle , Grossesse , Amniocentèse , Chromosomes humains de la paire 9 , Foetus , Incidence , Caryotypage , Dépistage de masse , Phénotype , Examen physiqueRésumé
Cervical pregnancy is a rare life-threatening form of ectopic pregnancy. The exact etiology of cervical pregnancy is not known, but several contributing factors have been considered. Probably a combination of factors leads to cervical pregnancy. The first case was required hysterectomy. The second case was successfully treated with a unique combination of precurettage cerclage, suction curettage and postcurettage balloon tamponade. Conservative treatment has evolved in recent years, with a considerable reduction in the number of hysterectomies. We present two cases of cervical pregnancy associated with multiple risk factors in elderly gravida, with brief reviews.
Sujets)
Sujet âgé , Femelle , Humains , Grossesse , Occlusion par ballonnet , Hystérectomie , Grossesse extra-utérine , Facteurs de risque , Curetage aspiratifRésumé
Cystic lymphangioma of the broad ligament is very rare benign cystic lesion. They rarely present in adult life. We present the case of a 37-year-old female with a history of chronic recurrent left lower abdominal dull pain over a period of several months. Clinical presentation of these tumors varies greatly from an asymptomatic mass to serious complications. The therapy of choice is a complete excision, unless vital structures were involved. Once excised, the prognosis is excellent. Our patient had complete excision of her lesion with a good outcome.