ObjectiveTo investigate the possible mechanism affecting liver cirrhosis by splenectomy. MethodsBy subcutaneous administration of 20% carbon tetrachloride(CCl4), liver cirrhosis models were established in splenectomy and nonsplenectomy groups. After HE staining, special staining and immunohistochemical staining, mast cell, Kupffer’s cell and Ito cell were counted under optical microscope. Liver pathological sections and the dynamic changes of these cells in mice were studied respectively in comparison with the normal group.ResultsThe incidence of liver cirrhosis in nonsplenectomy group was significantly higher than that in splenectomy group after the 16th injection of CCl4 (P＜0.05). The count of mast cell was much higher than that in splenectomy group after the 4th and the 8th injection (P＜0.05). Kupffer’s cell and Ito cell significantly increased after the 12th and the 16th injection in nonsplenectomy group compared with splenectomy group (P＜0.05). ConclusionSplenectomy may decline the incidence of hepatic cirrhosis caused by multifactors. In the early stage, splenectomy influences the migration, maturation and accumulation of mast cell. In the middle and late stage, it influences the proliferation of Kupper’s cell and cytokine secretion, thus the Ito cells are activated and proliferation is inhibited, in which extracellular matrix decreases in amount and the degree of hepatic fibrosis is reduced.
Objective To investigate the cl inical directive significance of three-dimensional reconstruction of CT in treating mandibular angle hypertrophy. Methods Between March 2009 and January 2011, 18 patients with mandibular angle hypertrophy were treated using the three-dimensional reconstruction technology of CT. All patients were female, aged20-36 years with an average of 25 years. Eighteen patients included: 14 single mandibular angle hypertrophy, 3 mandibular angle hypertrophy with masseter hypertrophy, and 1 mandibular angle hypertrophy with bilateral asymmetry; 6 cases of ptosis of mandibular angle, 9 cases of prominent mandibular angle, and 3 cases of introversive mandibular angle. According to the types of mandibular angle hypertrophy, the surgical methods could be correctly chosen. The procedure was planned and simulated; the osteotomy l ine was marked and the osteotomy was measured on the workstations of three-dimensional reconstruction. Results No fracture of mandible occurred in the operation. Facial nerve temporary attack occurred in 1 case and recovered at 3 months after operation. All patients were followed up 6-12 months (mean, 7.6 months). After 6 months of operation, the effectiveness was satisfactory in 15 cases, basically satisfactory in 2 cases, and unsatisfactory in 1 case (bilateral asymmetry). Conclusion Based on three-dimensional reconstruction technology of CT, surgical design performed on the model will promote the accuracy of operation. Basically symmetrical appearances can be achieved with satisfactory results.
Objective To investigate the effect of myoblast transplantation on duchenne muscular dystrophy (DMD) and to explore the method and feasibil ity of applying gene therapy to DMD. Methods Myoblast of C57/BL10 mice were cultured using multiple-step enzyme digestion method and differential velocity adherent technique. The morphology of the cells was observed with inverted phase contrast microscope. The cells at passage 4 were labeled with 5-BrdU. Twenty-four DMDmodel mice (mdx mice: aged 4-6 weeks, male, 13.8-24.6 g) were randomly divided into two groups (n=12 per group): group A, 1 × 106/mL labeled myoblast were injected via ven caudal is twice at an interval of 2 weeks; group B: 1 mL DMEM/F12 was injected in the same manner serving as a control group. The mice were killed 4 weeks after operation and the motor abil ity of the mice was detected by one-time exhaustive swimming before their death. HE staining and immunohistochemistry staining observation for 5-BrdU, desmin, and dystrophin (Dys) were preformed, and the imaging analysis was conducted. Results The primary myoblast could be sub-cultured 5-7 days after culture, providing stable passage and sufficient cells. The time of onetime exhaustive swimming was (60.72 ± 5.76) minutes in group A and (47.77 ± 5.40) minutes in group B, there was significant significance between two groups (P lt; 0.01). At 4 weeks after injection, HE staining showed that in group A, there were round and transparent-stained myocytes and the percentage of centrally nucleated fibers (CNF) was 67%; while in group B, there were uneven muscle fiber with such pathological changes as hypertrophia, atrophia, degeneration, and necrosis, and the percentage of CNF was above 80%. Immunohistochemistry staining revealed that the expression of 5-BrdU, desmin, and Dys was positive in group A; while in group B, those expressions were l ittle or negative. Image analysis result displayed that integral absorbency (IA) value of desmin was 489.70 ± 451.83 in group A and 71.15 ± 61.14 in group B (P lt; 0.05) and the ratio of positive area to thetotal vision area was 0.314 3 ± 0.197 3 in group A and 0.102 8 ± 0.062 8 in group B (P lt; 0.05); the Dys IA value was 5 424.64 ± 2 658.01 in group A and 902.12 ± 593.51 in group B (P gt; 0.05) and the ratio of positive area to the total vision area was 0.323 7 ± 0.117 7 in group A and 0.035 2 ± 0.032 9 in group B (P lt; 0.05). Conclusion Myoblast transplantation has certain therapeutic effect on DMD of mice.
Objective To evaluate the effect of the combined method of l iposuction and semicircular periareolar incision glandular organ partial resection in the treatment of gynecomastia. Methods From June 2004 to June 2006, 40 patients, aged 11-41 years old, were treated, with no-nodule (n=10), nodule (n=22) and female-breast-l ike with nodules (n=8). Three patients were unilateral and 37 ones were bilateral. The levels of serum prolactin, luteinizing hormone, foll icle stimulating hormone, estradiol, testosterone and cortisol were normal in 38 patients, while in the other 2 patients, the levels ofserum prolactin, luteinizing hormone, foll icle stimulating hormone and estradiol were higher than normal, and the testosterone level was lower. Li posuction alone was performed in 10 no-nodule patients (lei po-type), and combined l i posuction and semicircular periareolar incision glandular organ partial resection were conducted in the other 30 patients (lei po-glandular type). Results Except for 2 cases in which hematoma and a small amount of effusion were found on the first and second day postoperatively and then obtained heal ing by first intention right after hematoma removal in time, all the other patients’ incisions obtained heal ing by first intention. Ni pple numbness occurred in 3 cases on the first day postoperatively and no special treatment was conducted. There was still nipple hypesthesia in these 3 cases after 6-month follow-up. There were no compl ications such as hematoma, effusion, nipple and mammary areola necrosis, and nipple hypesthesia in other patients. All the 40 patients were followed up for 6-24 months (13 months on average). They were satisfied with their chest figures and no recurrence was observed. Conclusion The combined method of l iposuction and semicircular periareolar incision glandular organ partial resection in the treatment of gynecomastia has many advantages, such as safe, micro-scars, natural and beautiful male breast figures as well as high patients’ satisfaction.
OBJECTIVE: To investigate the diagnostic criteria and therapeutic method of the Klippel-Trenaunay syndrome. METHODS: Among 5 cases, there were 2 males and 3 females aged from 11 days to 73 years. Vasography was carried out in all five patients and MRA was performed in one patients. RESULTS: After operation, the symptoms improved in 4 cases: the portine-like erythemas on their limbs got unclear; the focuses diminished obviously; the circumferences of the suffered limbs shrank and the ulcer healed. For following-up period was not long enough, the long term therapeatic result was still uncertain. CONCLUSION: Once the diagnosis of the Klippel-Trenaunay syndrome was made, operation should be performed as early as possible. If the surgical time is selected in prepuberty, optimal result can be expected.
【摘要】 目的 研究肥大细胞膜稳定剂色甘酸二钠（disordium cromoglycate，DC）对葡聚糖硫酸钠（dextran sulfate sodium，DSS）诱导的大鼠急性结肠炎的影响。 方法 出生80~100 d的雄性SD清洁级大鼠30只，体重180~250 g。30只大鼠随机分为3组:正常对照组（A组）、溃疡性结肠炎组（B组）和DC组（C组），每组各10只。B组和C组自由饮用40 g/L DSS溶液（4%） 7 d诱发急性结肠炎，同时C组每天按100 mg/kg腹腔注射DC 1次，A组和B组每天腹腔注射等量的生理盐水。7 d后，处死各组大鼠。对各组大鼠行疾病活动指数评分，结肠组织行大体评分、组织学评分，检测门静脉血一氧化氮浓度，结肠组织髓过氧化物酶活性。 结果 疾病活动指数评分、大体评分、组织学评分、一氧化氮浓度及髓过氧化物酶活性均表现为B组gt;C组gt;A组（Plt;0.05）。 结论 肥大细胞膜稳定剂DC对DSS诱导的大鼠急性结肠炎有一定的保护作用。【Abstract】 Objective To observe the influence of the mast cell memebrane stabilizer, disordium cromoglycate (DC), on dextran sulfate sodium (DSS)-induced colitis in rats. Methods Thirty male Sprague-Dawley (SD) rats aged 80 to 100 days with their weight ranged from 180 to 250 g were randomly divided into 3 groups: normal control group (group A), dextran sulfate sodium group (group B) and disordium cromoglycate group (group C), with 10 rats in each. Rats in group B and C drank 40 g/L DSS solution (4%) for 7 days to induce acute colitis. At the same time, intraperitoneal administration of DC (100 mg/kg) to rats in group C was carried out once a day, while the other two groups of rats were given the same amount of normal saline solution. Disease activity index (DAI), gross and histological evaluation were analyzed. NO concentration of blood from portal vein was measured. Myeloperoxidase (MPO) activity of colonic tissue was detected. Results The experimental data of group C, including DAI, gross evaluation, histological assessment, NO concentration and MPO activity, were all significantly higher than those of group A (Plt;0.05), but lower than those of group B (Plt;0.05). Conclusion Disordium cromoglycate can protect the colon of rats with DSS-induced acute colitis.