Radial artery recurrent branch of styloid process bone flap transfer for treatment of scaphoid nonunion / 中国骨伤

<p><b>OBJECTIVE</b>To investigate the clinical efficacy of radial artery recurrent branch of the styloid process bone flap transfer for treatment of scaphoid nonunion.</p><p><b>METHODS</b>From 2002 to 2007, 18 patients with scaphoid nonunion included 12 males and 16 females with an average age of 31.2 years old ranging from l8 to 51 years. Time from injury to operation was 8 to 26 months (averaged 12.5 months). Radial bone flap blood supply by radial artery recurrent branch of styloid process was embedded in retrograde scaphoid shift distance at both ends, Kirschner wire fixed on the bone flap and bone fractures, and the radial styloid process was resected. Cast gypsum immobilization in a neutral place of wrist were performed for 6 to 8 weeks, the rehabilitation of physical therapy and functional exercise were performed after removal. Kirschner wire were removed after X-ray showed fracture healing.</p><p><b>RESULTS</b>Among them, 15 cases were followed-up for from 8 to 25 months (means 13 months). All fractures healed. The healing time was 8 to 12 weeks. According to adult forearm fracture evaluation of Anderson the results were excellent in 14 cases, good in 1.</p><p><b>CONCLUSION</b>The radial artery recurrent branch of styloid process bone flap has a wealth of blood circulation, can make free grafting of the creeping substitution process directly into the healing process.</p>

Epidemiologic study on the relationship between smoking and sleep apnea/hypopnea syndrome / 中华流行病学杂志

<p><b>OBJECTIVE</b>To investigate how smoking was affecting the prevalence of sleep apnea/ hypopnea syndrome (SAHS) among adults aged over 30 years in Chengde city of Hebei province.</p><p><b>METHODS</b>1168 subjects, over 30 years of age were derived from a random sample from a community-based population in Shuangqiao district of Chengde city. All subjects responded to a questionnaire at their own houses regarding their habits of snoring and smoking. 1168 subjects (95.2%) answered the questions satisfactorily.</p><p><b>RESULTS</b>(1) Among the smoking groups, the prevalence of snoring was 69.09%, higher than that in the nonsmoking groups 45.07% (P = 0.000). (2) In males, the smoking group had a higher prevalence (69.72%) of snoring than in the nonsmoking group (60.80%, P = 0.033). (3) Females in the smoking group had a higher prevalence of snoring (61.80%) than in the nonsmoking group (39.70%, P = 0.011). (4) The prevalence of snoring in males (60.80%) was significantly higher than that in females (39.70%, P = 0.000). (5) The prevalence (69.72%) of snoring in smoking males was similar to that in smoking females (61.80%, P = 0.336). (6) Data from logistic regression analysis indicated that smoking was one of the factors affecting snoring. (7) According to the degree of snoring, 127 moderate and severe snorers were measured by portable PSG for a whole night and the prevalence of SAHS was estimated. According to the AHI > or = 5 and the ESS > or = 9 cutoff-points, the prevalence rates of SAHS in smoking groups were both significantly higher than that in nonsmoking groups (P < 0.001).</p><p><b>CONCLUSION</b>Smoking and snoring among adults aged over 30 years had correlation in our city.</p>

DEVELOPMENT OF AN INDUCIBLE EXPRESSION AND SECRETION SYSTEM FOR ALKALINE PROTEINASE EN BACILLUS SUBTILIS / 微生物学通报

The regulatory region and the signal peptide sequence of the sacB gene has been amplified by PCR using Bacillus subtilis chromosomal DNA as template, and an inducible secretion vector has been developed based on this sequence, which was ligated with Bacillus subtilis alkaline proteinase gene. Transform Bacillus subtilis DB403 with this vector, and the expression of the inserted Bacillus subtilis alkaline proteinase gene can be induced by addition of sucrose into the medium.