Objective To investigate the clinical value of susceptibility weighted imaging (SWI)combined with three dimensional pseudo continuous arterial spin labeling (3D-PCASL)on the prognosis analysis of acute cerebral infarction.Methods Thirty cases with acute cerebral infarction (< 72 h)underwent conventional MRI,MRA,3D-PCASL and SWI.NIHSS scores were performed at the time of examination and 3 months later.The correlation between the collateral blood vessels,regional cerebral blood flow (rCBF)detected by combination of SWI and 3D-PCASL with clinical prognosis were analyzed.Results Twenty-three cases showed collateral blood vessels in the lesions with 1 grade in 14,and 2 grade in 9.The average rCBFs in grade 0,1,2 infarction areas were (22.69±11.94)mL·100 g-1 ·min-1 ,(25.10±16.55)mL·100 g-1 ·min-1 and (33.04±24.24)mL·100 g-1 ·min-1 ,respectively.Collateral blood vessels,rCBF were positive correlated with the NIHSS scores (r=0.989,P< 0.01).18 cases showed multiple vessels around the lesions. The average rCBFs in the infarction area with or not with periphery collateral blood vessles were (28.33±24.24)mL·100 g-1 ·min-1 and (22.69±11.94)mL·100 g-1 ·min-1 ,respectively.There was a positive correlation between rCBF and NIHSS scores (r=0.897,P<0.01). Of 30 cases of acute cerebral infarction,the average CBFs in the infarct areas and the contralateral mirror areas were (26.92±18.22)mL·100 g-1 · min-1 and (34.22±12.37)mL·100 g-1 ·min-1 .There was significant difference (t=8.093,P<0.01).Conclusion The combination of SWI and 3D-PCASL can display the collateral blood vessels in the lesions and soft meninges,and provide the quantitative analysis of rCBF,which has important clinical significance for prediction of the prognosis of acute cerebral infarction.

Objective: To investigate the effects of ureaplasma urealyticum(Uu) infection on male sperm quality, nitric oxide(NO) concentration and cytokine interleukin (IL)-17, IL-18 and tumor necrosis factor alpha(TNF-α) concentrations, the mechanism of its action in male infertility was analyzed at the molecular level. Methods: From September 2015 to December 2017, 53 male infertility patients who admitted in the outpatient clinic of the Second People's Hospital of Lianyungang were selected.According to whether the patients were infected Uu, they were divided into two groups: male infertility without Uu infection group (B group) and male infertility with Uu infection group (C group, Uu≥10⁷CCU/L). The content of NO in seminal plasma was determined by nitrate reductase method.The contents of cytokines IL-17, IL-18 and TNF-α were detected by flow cytometry microsphere capture chip technique (CBA), and the spermate-related parameters were analyzed in conjunction with the computer-aided semen analysis system(CASA). Results: The concentration of NO in the male infertility group with Uu infection group[(145.98±32.28)μmol/L] was significantly higher than that in the male infertility without Uu infection group [(60.93±16.62)μmol/L] and the control group [(35.92±1.73)μmol/L](F=200.987, P<0.01). The semen pH(6.09±0.14), sperm concentration [(26.64±8.34)×10⁶/mL], and forward movement rate(a+ b) [(21.46±6.88)%], sperm survival rate [(28.92±9.17)%] and sperm morphology normal rate [(10.12±4.97)%] in the male infertility group with Uu infection were significantly lower than those in the male infertility without Uu infection group and the control group(all P<0.01). And the concentration of NO in the semen of males waspositively correlated with the concentrations of IL-17, IL-18 and TNF-α(R²=0.916 8, 0.863 0, 0.878 9, all P<0.01). The concentrations of IL-17 and IL-18 were positively correlated(R²=0.934 4, P<0.01). Conclusion Uu infection in infertility patients can cause high NO concentration.The levels of cytokines IL-17, IL-18 and TNF-α are positively correlated with the concentration of NO.The imbalance of various cytokines may be one of the causes of male infertility.

Objective To explore the diagnostic value of helical CT,fluid attenuated inversion recovery(FLAIR),magnetic resonance angiography (MRA)and susceptibility weighted imaging (SWI)at 3.0T MR for acute ischemic stroke (AIS).Methods 48 cases of AIS(<72 h)underwent conventional CT,MRI,MRA and SWI.The correlations between hyperdense middle cerebral artery sign (HMCAS),proximal hyperintense vessel sign(HVS),magnetic sensitive spatially-integrated susceptibility vessel sign(SVS),vascular dot middle cerebral artery sign(DMCAS),distal HVS and collateral circulation of the blood vessels surrounding leptomeninges expansion degree were analyzed.Results In 48 AIS cases,HMCAS were showed in 18(37.5%),DMCAS 12(25.0%),proximal HVS 33(68.7%), distal HVS 40(83.3%),SVS 43(89.6%)and surrounding soft meningeal vascular 39(81.2%).The difference between spatially-integrated SVS and HVS was statistically significant (P<0.05);For HVS and HMCAS responsibility blood vessels at the bottom,the difference was statistically significant(P<0.01).For pia mater lesions around the blood vessel and distal HVS display degree,the responsibility of the blood vessels was high consistency(P=0.789).The difference between MCA distal HVS and DMCAS was statistically significant (P<0.01).Conclusion It has obvious consistency for SVS,proximal HVS and HMCAS of MCA on the responsibility of AIS.SWI is better than FLAIR and CT.It has obvious statistical sighificance between DMCAS,HVS and surrounding leptomenings vasodilatiov.