Objective To analyze the typing and clinical characteristics of neurosyphilis and provide evidences to improve early diagnostic.Methods Retrospective study of 18 cases of neurosyphilis was performed.Results Acute or subacute onset was observed in most cases; The interstitial neurosyphilis was the commonest, of which the clinical features varied widely and arose primarily from corresponding vascular infarctions; CSF examination revealed increase in pressure, protein and cells.TPHA and RPR were of the highest specificity among the serologic indexes;CT/MRI findings of brain revealed multiple, asymmetrical lesions which were different from those of infarctions caused by hypertension or arteriosclerosis.Conclusion Misdiagnosis rate is high at the initial reception.The clinical manifestations of neurosyphilis are closely related to pathological types. The lab tests and radiological findings are important clues to early diagnosis.

Objective To investigate the effects of exendin-4 (exenatide) on insulin sensitivity and adipocytokine in high-fat-fed rats. Methods Rats were divided randomly into normal-chow group (NC), high-fat group (HF) and high-fat+exendin treated group (HE). HE rats were given exenatide (2 μg/kg) twice daily for 6 wk. The insulin sensitivity was evaluated by intravenous insulin tolerance test (IVITT). Insulin-stimulated changes in insulin signal transduction, visfatin and adiponectin mRNA expressions as well as their plasma levels were also observed in these rats. Results Plasma free fatty acids (FFA), triglyceride (TG), total cholesterol (TC) levels were significantly reduced after exenatide treatment (in HE rats all P<0.01). And IVITT parameters were also improved in these rats. Insulin-stimulated IRS-1 tyrosine phosphorylation was slightly increased in exenatide-treated rats as compared with HF rats (P<0.05). In addition,plasma visfatin level was significantly reduced in HF and HE groups as compared with controls (P<0.05 and P<0.01). The adiponectin mRNA expression in adipose tissues and circulating adiponectin level were significantly elevated in exenatide-treated rats as compared with untreated rats and controls (P<0.01). Conclusions Chronic exenatide treatment improves insulin resistance in high-fat-fed rats, and the changes of IRS-1 tyrosine phosphorylation and adiponectin may be related to the role of exenatide in elevating insulin sensitivity