Objective To investigate the expression of KAI1 protein in tissues of papillary thyroid cancer (PTC) and follicular thyroid cancer,and the effect of KAI1 protein in invasion and metastasis of PTC.Methods The clinical data of 58 patients with PTC (PTC group),17 patients with follicular thyroid cancer (follicular cancer group) and 30 patients with benign thyroid tumor (control group) were retrospectively analyzed from January 2006 to August 2009.The expression of KAI1 protein in PTC tissues,follicular thyroid cancer tissues and benign thyroid tumor tiasues were detected by immunohistochemistry method.Results The positive expression rate of KAI1 protein in PTC group was 48.3％(28/58),in follicular cancer group was 47.1％(8/17),in control group was 86.7 ％(26/30).There was significant difference between PTC group,follicular cancer group and control group (P＜ 0.01).There was no significant difference between PTC group and follicular cancer group (P ＞ 0.05).There was no significant difference in the positive expression rate of KAI1 protein of PTC tissues among the different sex,age and size of the primary lesion (P＞ 0.05).The positive expression rate of KAI1 protein in the TNM Ⅰ was 88.9％(8/9),the TNM Ⅱ was 60.9％(14/23)and the TNM Ⅲ-Ⅳ was 23.1％ (6/26),there was significant difference in the positive expression rate of KAI1 protein among the different TNM stage (P ＜ 0.01).The positive expression rate of KAI1 protein in the lymph node metastasis patients was 32.3％ (10/31),the non-lymph node metastasis patients was 66.7％ (18/27),there was significant difference (P ＜ 0.05).Conclusion The expression of KAI1 protein may reflect the PTC metastasis and the clinical evolution of tumors,the KAI1 protein may inhibit the invasion and metastasis of PTC.

Objective To investigate the effect of carboxyl methyl chitosan on hypertrophic scars by establishing a hypertrophic scar model on the ventral side of rabbit ears.Methods Full-thick-ness excisional wounds,1 cm in diameter,were made in the ears of 12 adult New Zealand white rabbits,and 123 hypertrophic sears were made in all.Then the rabbits were divided into 3 groups:group A was an experimental group (carboxyl methyl chitosan,500μg/ml),group B was a control group 1 (triamcinolone),and group C was control group 2 (physiological saline).All the scars were injected with drugs on the 30th and 40th days after operation,and then the samples were collected on the 35th and 45th day and analyzed.Results Compared with group C,group A appeared to be flatter,softer,and lighter in color;the area density of fibroblast decreased using HE stain and masson stain (P<0.05),and hydroxyproline content and hypertrophic index were also lower than group C (P<0.05).There were no significant differences of those criteria between group A and group B (P>0.05).Conclusion Injection of carboxyl methyl chitosan into Iocal hypertrophic scars On rabbit ears has similar effects to triamcinolone,and both of them can prevent and cure hypertrophic scars in proliferative stage.

Objective:To investigate the association of body mass index (BMI), blood lipid, serum leptin, adiponectin with papillary thyroid carcinoma.Methods:A total of 120 patients including 40 cases of papillary thyroid carcinoma (papillary thyroid carcinoma group), 40 cases of nodular goiter (nodular goiter group) and 40 cases diagnosed without thyroid diseases or other metabolic diseases during the corresponding period (the control group) in Inner Mongolia People's Hospital from April 2015 to January 2016 were enrolled. The BMI of all subjects was calculated. The levels of blood lipid, serum leptin and adiponectin were detected.Results:The number of females was more than that of males in nodular goiter group and papillary thyroid carcinoma group, and the difference in gender distribution of three groups was statistically significant (χ 2 = 19.024, P < 0.01). The level of BMI, leptin, triglyceride and total cholesterol of papillary thyroid carcinoma group was higher than that of the control group [(24.86±3.26) kg/m 2 vs. (20.79±2.15) kg/m 2, (0.68±0.07) ng/ml vs. (0.61±0.39) ng/ml, (1.42±0.53) mmol/L vs. (1.05±0.36) mmol/L, (4.76±0.57) mmol/L vs.(4.28±0.46) mmol/L], and the differences were statistically significant ( t values were 4.302, 3.296, 1.993 and 2.177, respectively, all P < 0.05). The level of total cholesterol and low-density lipoprotein [(4.97±0.55) mmol/L, (2.72±0.58) mmol/L] in the nodular goiter group was higher than that in the control group [(4.28±0.46) mmol/L, (2.18±0.69) mmol/L], and the differences were statistically significant ( t values were 2.954 and 2.148, respectively; all P < 0.05). The level of adiponectin [(4.21±0.34) ng/ml, (4.30±0.27) ng/ml] in papillary thyroid carcinoma and nodular goiter group was lower than that in the control group [(4.87±0.27) ng/ml], and the differences were statistically significant ( t values were 7.631 and 7.416, respectively; all P < 0.05). Conclusion:The increase of BMI, triglyceride, total cholesterol, serum leptin and the decrease of serum adiponectin may be related to the occurrence of papillary thyroid carcinoma.