Objective To evaluate the effect of metformin treatment on the thyroid hormone profile in patients with polycystic ovary syndrome (PCOS).Methods A total of 148 patients with PCOS was specifically selected for either being diagnosed of hypothyroidism or subclinically hypothyroid or euthyroid without levothyroxine treatment before the starting of metformin.The serum levels of thyroid stimulating hormone (TSH) and free thyroxine (FT4) were measured before and after a 6-month period of metformin therapy.Results Thyroid function parameters did not change after starting metformin therapy in euthyroid patients with PCOS.In the 9 hypothyroid patients and 38 subclinical hypothyroid patients with PCOS,the basal median serum levels of TSH (P ＜ 0.05) decreased after a 6-month course of mefformin treatment [(2.77 ±1.47) μIU/ml vs (6.77 ± 2.46) μIU/ml;(2.90 ± 1.08) μIU/ml vs (4.05 ± 0.94) μIU/ml,P ＜ 0.05].No significant change in the serum levels of FT4 was observed in these patients (P ＞ 0.05).Conclusions Mefformin treatment has no effect on thyroid hormone,but has a TSH-lowering effect in hypothyroid and subclinically hypothyroid patients with PCOS.

Objective To investigate the CT findings of orbital inflammatory pseudotumor in different types and to improve the diagnosis and differential diagnosis of this disease.Methods CT findings of orbital inflammatory pseudotumor in 58 cases confirmed by clinic or pathology were analysed retrospectively.Results This disease could be categorized five types according to CT findings: ①mass type in 5 cases (8.6%), the characteristic CT findings were soft-tissue masses in intraorbit; ②diffusion type in 5 cases (8.6%) showed retrobulbar fat interspace of high-density without masses; ③myositis type in 22 cases(37.9%) showed the enlargement of entire muscles including the tendinous insertion;④lacrimal galnd type in 6 cases(10.3%) showed enlargement of lacrimal gland on CT; ⑤the mixed type in 20 cases (34.5%) showed hypertrophy of the extra-ocular muscles adjacent to mass and high-density of surrounding fat ,or hypertrophy of the extra-ocular muscles adjacent to enlarged lacrimal gland.There were in different degree of paranasal sinusitis such as maxillary sinusitis and/or ethmoid sinusitis in 22 cases(37.9%).Conclusion CT scan is of important role in diagnosing and differential diagnosing orbital inflammatory pseudotumor.

Objective To explore the clinical effect of sitagliptin combined insulin compared to those patients whose sugars were not well controlled by insulin alone.Methods The eighty type 2 Diabetes patients whose BMI≥24 kg/m2 and used insulin alone were randomly divided into sitagliptin combined insulin group (40 cases) who were given sitagliptin 100mg/d allied with insulin,an insulin group (40 cases) who were given insulin alone.After 12 weeks,the change of body mass index (BMI),fasting plasma glucose (FPG),2 h postprandial blood glucose (2 h PBG),glycosylated hemoglobin (HbA1 c),β-cell function index(HOMA-β),insulin resistance index (HOMA-IR),insulin quantities,and hypoglycemia rates were observed in two groups.Results Compared with pretherapy,the levels of FPG,2 h BG,HbAlc,HOMA-IR,and hypoglycemia rates were significantly decreased (P ＜0.05) ; BMI was increased in insulin group,while was not increased in sitagliptin combined insulin group.After the treatment,the insulin quantities were decreased in the combined group while increased in the control group (P ＜ 0.05).Conclusions Sitagliptin combined insulin can effectively control glucose levels of type 2 diabetes patients,decrease the insulin quantities and the risk of hypoglycemia,and does not increase the weight.

Objective: To establish a triple-color pseudovirion-based neutralization assay (PBNA) and evaluate its capability of detecting immunogenicity of the sera generated by the immunization of HPV 9-valent vaccine. Methods: HPV pseudovirus (PsVs) 6/11/16/18/31/33/45/52/58 with the encapsidated fluorescence expressing red fluorescent plasmid N31-MCHREEY, green fluorescent N31-EGFP or blue fluorescent N31-mTagBFP were generated. The concentration of HPV PsVs and the infection titers of HPV PsVs were detected by double-antibody sandwich ELISA and TCID₅₀, respectively. The single- and triple color HPV 16/33/45 PsVs were used to detect the neutralization titers of mice sera immunized with HPV 9-valent vaccine and confirmed the accuracy and specificity of the triple-color PBNAs. Then, the single- and triple color HPV 6/11/18/31/33/45/52/58 PsVs were employed to detect the neutralization titers of cynomolgus macaques sera immunized with HPV 9-valent vaccine and determined whether the triple-color PBNAs could be applied to evaluate the immunogenicity of the sera generated by the immunization of HPV9-valent vaccine. Results: The concentration of HPV16 PsVs encapsulating green, red or blue fluorescent plasmid was 5.0 to 6.0 μg/ml and HPV6/11/18/31/33/45/52/59 triple-color HPV PsVs was about 1.0 to 3.0 μg/ml. 9 types HPV PsVs containing EGFP, Mcherry or mTagBFP reporter plasmid were obtained and the concentration can meet the need of neutralization detection. 9 types single-color fluorescent HPV PsVs had similar infectivity against 293FT cells with the infection titer values between 1×10⁴ and 1×10⁵. The results of PBNAs showed that there was no significant difference in the anti-HPV neutralization titers of mice sera induced by HPV 9-valent vaccine between single-color and triple-color HPV16/33/45 PsVs (P>0.05). Similarly, there was also no significant difference in the anti-HPV neutralization titers of cynomolgus macaques sera induced by HPV 9-valent vaccine between single-color and triple-color HPV6/11/18/31/33/45/52/58 PsVs (P>0.05). Conclusion We successfully established the triple-color PBNAs and verified the accuracy and specificity of triple-color PBNAs consistent with single-color PBNAs. The triple-color PBNAs can be applied to evaluate the immunogenicity of HPV 9-valent vaccine's immune serum.