Both monovular twins suffered from chronic actinic dermatitis: a survey in a four-generation family / 中华皮肤科杂志

Objective To investigate the clinical feature and prevalence of chronic actinic dermatitis in a four-generation family with both monovular twins affected by chronic actinic dermatitis.Methods The clinical and laboratory findings from monovular twins simultaneously affected by chronic actinic dermatitis and their four-family members were analyzed.Results There were 76 members in the four-generation family,with 22 members (including 14 males and 8 females) diagnosed with chronic actinic dermatitis.No positive results were found from laboratory examinations or environmental survey.Conclusion Chronic actinic dermatitis was inherited in an autosomal mode in this family.

Intestinal absorption of aloe-emodin using single-passintestinal perfusion method in rat / 中国中药杂志

The intestinal absorption of aloe-emodin was investigated using the single pass intestinal perfusion (SPIP) technique in S/D rats. SPIP was performed in each isolated segment of the intestine (i.e., duodenum, jejunum, ileum and colon) and the different concentrations inhibitor group of P-glycoprotein (P-gp) and multidrug resistance-associated protein (MRP2) with the concentrations of aloe-emodin (0.238 mg x L(-1)) at a flow rate of 0.28 mL x min(-1). The effective absorption rate constant (Ka) and apparent absorption coefficient (Papp) of aloe-emodin for each segment were determined before and after treated with different concentrations of inhibitors of P-gp and MRP2 respectively. Aloe-emodin exhibits a high intestinal permeability except the the ileum, indicative that the compounds are well absorbed. Decreases of Ka and Papp values in the duodenum, jejunum, colon and ileum, furthermore, the duodenum has significant increased compared with the ileum, there are have no significant difference in other isolated region of the intestine. Compared with the group which have no inhibitor of P-gp, the Ka and Papp were significantly increased in inhibitor of P-gp groups. Compared with the group of no inhibitor of MRP2, the Ka and Papp were significantly increased in inhibitor of MRP2 groups with the highest and the middle concentration. The results suggested that the inhibitors of P-gp and MRP2 all can promote the intestinal absorption of aloe-emodin.