Research progress on prevention of recurrence of venous leg ulcer (下肢静脉溃疡再复发预防的国内外应用研究进展)

Venous leg ulcers (VLU) associated with chronic venous insufficiency have a high rate of recurrence, reinforcing the chronic ulcer and causing a potentially vicious cycle. In this paper, the risk factors and nursing care of VLU relapse were reviewed. Based on evaluation of risk of recurrence, targeted measures were carried out to reduce the risk factors of recurrence in primary prevention, to prevent venous disease from causing VLU recurrence in secondary prevention, and to taking various means of treatment to actively treat patients with existing VLU. (下肢静脉溃疡(VLU)治愈后复发率及复发次数高, 甚至形成溃疡-愈合-复发的恶性循环, 且可能伴随终身。本文通过对VLU再复发各个阶段的危险因素及预防措施进行综述, 包括: 一级预防针对再复发高危因素采取相应措施; 二级预防主要防止静脉疾病造成VLU复发; 三级预防采用各种手段治疗积极治疗患者现有VLU, 杜绝其再复发。

番茄灰霉生防菌CQ的分子鉴定及其生防效果研究

菌株CQ是一株分离自云南省保山市昌宁县烟草根部的对番茄灰霉病具有较好防治效果的拮抗细菌。通过对该菌株进行形态特征观察、16S r DNA序列分析鉴定,确定菌株CQ为枯草芽孢杆菌Bacillus subtilis。拮抗试验结果表明,菌株CQ能够显著抑制番茄灰霉菌的菌丝生长,使菌丝出现异常分枝和囊泡状畸形。1‰CQ发酵滤液即可显著抑制番茄灰霉菌孢子的形成。室内生测结果表明,相比对照组,48 h无菌发酵滤液原液在离体叶片上对番茄灰霉病的防效可达100%,而其10、100倍稀释滤液则使发病率分别降低28.5%和21.3%,病情指数分别降低44.01和37.86