The epidemiological survey of hypertension among the elderly population in Shanxi Province / 中华老年医学杂志

Objective To investigate the prevalence rate of hypertension among the elderly population in Shanxi Province. Methods According to the random sampling, 41 residents committees of city blocks and villages of 9 areas (including Taiyuan, Datong, Jinzhong, Yuncheng, et al) of Shanxi Province were extracted as the investigative spots. All the people were older than 55years, and risk factors for hypertension were identified. Results A total of 3702 people were surveyed, including 1,782 men and 1,920 women. The total hypertension prevalence rate was 39.0%(the standardized rate: 39. 5 %), with 38. 7 % in men (the standardized rate: 38. 5%), 39.3 % in women (the standardized rate: 41.2%), and no statistic significance was found between men and women (χ2= 0. 143, P>0. 05). Aging, lacking of knowledge, and obesity were risk factors for hypertension. Conclusions The hypertension in Shanxi Province has a high prevalence rate among the elderly population, a comprehensive intervention should be taken in the prevention of hypertension.

Dynamic Observation of Attachment and Invasion of Toxoplasma gondii Tachyzoites to Intestinal Mucosa in BALB/c Mice by Chromogenic In Situ Hybridization Targeting SAG2 mRNA / 中国寄生虫学与寄生虫病杂志

Objective To observe dynamically the location and time of attachment and invasion of Toxoplasma gondii tachyzoites to murine intestinal mucosa by chromogenic in situ hybridization targeting SAG2 mRNA. Methods Thirty 7- to 8-week-old BALB/c mice were randomly divided into experiment group(24 mice)and control group(6 mice). Each animal in the experiment group was given 2?104 tachyzoites of RH stain in 0.2 ml PBS by intragastric administration and that in the control group was given 0.2 ml PBS. Four mice in the experiment group and one in the control group were sacrificed at 15 min,30 min,1 h,2 h,4 h and 8 h after infection,respectively,and paraffin sections of duodenum,jejunum and ileum were prepared to perform the in situ hybridization with Dig-labeled oligonucleotide probe complementary to SAG2 mRNA of T. gondii. Results Tachyzoites were found on the striated border of small intestine epithelial cells (absorptive cells,goblet cells and endocrine cells),in or between two absorptive cells or in the lamina propria. At 15 min-2 h after infection,there was significant difference in the number of attachment on jejunum and ileum (P