兔髓核内注射TGF-β_1对退变软骨终板组织形态学影响的实验研究

目的探讨兔髓核内注射转化生长因子-β1(TGF-β1)对椎间失稳后软骨终板组织形态学的影响。方法选6月龄日本大耳白兔36只,体重(2.5±0.2)kg,雌雄不限。随机分为预防组(18只)、对照组(18只)。全部实验动物均通过分离骶棘肌、切断L5～6、L6～7棘上、棘间韧带、关节囊及两侧关节突关节后外1/2,造成L5～6、L6～7椎间失稳模型。预防组动物在完成椎间失稳手术后立即经侧后方入路显露L5～6、L6～7椎间盘,髓核内注射规格为0.01 mg/ml TGF-β1 25～30μl。于术后第3、6个月分别对两组白兔各取8只采集其软骨终板组织,进行HE染色及Mankin评分,并用SPSS 15.0软件进行统计学分析。结果术后第3、6个月,预防组较对照组软骨终板软骨细胞分布均匀,潮线清晰;Mankin评分降低(P<0.05)。结论兔髓核内注射TGF-β1对椎间失稳后软骨终板退变具有明显的预防作用。     

Follicular variant of seborrheic dermatitis: is it identical to Malassezia folliculitis?

Follicular accentuation in some patients with seborrheic dermatitis of the back and chest has been recognized for more than a century. The recognition of Malassezia folliculitis in recent decades has led to some confusion regarding categorization of these cases. The author proposes that there is sufficient clinical variation between the typical case of Malassezia folliculitis and patients with follicular seborrheic dermatitis to justify continued separation of these entities until further study provides more clarification.     

Recent intimate partner violence as a prenatal predictor of maternal depression in the first year postpartum among Latinas

The study aims to determine if recent intimate partner violence (IPV) is a prenatal risk factor for postpartum depression (PPD) among pregnant Latinas seeking prenatal care. A prospective observational study followed Latinas from pregnancy through 13 months postpartum. Prenatal predictors of PPD included depression, recent IPV exposure, remote IPV exposure, non-IPV trauma history, poverty, low social support, acculturation, high parity, and low education. Postpartum depression was measured at 3, 7, and 13 months after birth with the Beck's Depression Inventory—Fast Screen. Strength of association was evaluated using bivariate and multivariable odds ratio analysis. Subjects were predominantly low income, monolingual Spanish, and foreign-born, with mean age of 27.7. Recent IPV, prenatal depression, non-IPV trauma, and low social support were associated with greater likelihood of PPD in bivariate analyses. Recent IPV and prenatal depression continued to show significant association with PPD in multivariate analyses, with greater odds of PPD associated with recent IPV than with prenatal depression (adjusted OR = 5.38, p < 0.0001 for recent IPV and adjusted OR = 3.48, p< 0.0001 for prenatal depression). Recent IPV exposure is a strong, independent prenatal predictor of PPD among Latinas. Screening and referral for both IPV and PPD during pregnancy may help reduce postpartum mental health morbidity among Latinas.