Objective To evaluate the value of p504S,CK34?E12 and p63 immunostaining for the diagnosis of benign and malignant lesions of the prostate. Methods Expression of p504S、CK34?E12 and p63 in benign and malignant lesions of the prostate was observed by microwave SP immunohistochemical method. Results Continuous positive expression of CK34?E12 and p63 was found in the acini and ducts of most benign prostatic hyperplasia, and few cases showed interrupted expression, but p504S staining presented negative reaction; Interrupted expression of CK34?E12 and p63 was found in high prostatic intraepithelial neoplasia cases, and was weekly positive or negative for p504S; CK34?E12 and p63 staining was positive in five atypical adenomatous hyperplasia cases, one case presented focally positive reaction by p504S; CK34?E12 and p63 staining was negative in forty prostatic carcinoma, but positive by p504S;The gleason histologic grading of prostate carcinoma was negatively related to expression of p504S. Conclusion Combined detection of p504S、CK34?E12 and p63 can be most helpful for diagnosis of prostate carcinoma, especially in needle biopsy specimen.

Humans ; Medicine ; Medicine, Chinese Traditional ; methods

Arrhythmias, Cardiac ; physiopathology ; Electromyography ; methods ; Female ; Humans ; Infant, Newborn ; Male

OBJECTIVE: To investigate the impurity profile of cloxacillin sodium for injection and study the source of major impurities. METHODS: The impurities in samples from seven manufacturers were profiled by an optimized reversed-phase HPLC method and a newly established normal-phase HPLC method. The major impurities were prepared by semi preparation technology and identified by LC-QTOF-MS, 1H-NMR and 13C-NMR. RESULTS: Two new impurities relating with the salt-forming reaction and the purification process respectively, and four other new impurities were all successfully identified in this study. CONCLUSION: The study is suitable for profiling the impurities in cloxacillin sodium for injection and is quite useful for enhancing the quality control.

Objective To investigate the expression of NDRG1 and its relationship to differentiation level and metastasis in prostate cancer. Methods The expression NDRG1 was examined by immunohistochemistry LSAB method in 86 samples of prostate cancer and benigh prostate hyperplasia. Results The NDRG1 was shown to be highly expressed in 30(73.3%)of prostate cancer and 70.0%of benign prostate hyperplasia.There were no evident difference between prostate cancer and prestate hyperplasia(P＞0.05).The expression of NDRG1 was gradually reduction with the Gleason score from 2-4 to 5-7 to 8-10 in prostate cancer, which was statistical significance(P＜0.05).The expression of NDRG1 in lymph node or bone metastasis was significantly lower than that in no metastasis of prostate cancer. There was a negative correlation between the expression of NDRG1 and lymph node or bone metastasis. The age had no correlation with the expression of NDRG1(P＞0.05).Conclusion NDRG1 is involved in the genesis and development of prostate cancer, which may be related to the differentiation level of prostate cancer and serve as a useful marker for early diagnosis of cancer and metastasis.

AIM: To investigate the effects of irbesartan on acute myocardial ischemia-reperfusion injury and on expression of ICAM-1 and VCAM-1 in myocardial ischemia-reperfusion areas in rabbits. METHODS: Anterior descending branch of left coronary artery (LAD) was ligated in ischemia-reperfusion (IR) group but not in the sham group. Rabbits of IR group were subjected to 60 min of LAD occlusion, and 360 min of reperfusion. In the treated group, the rabbits were given irbesartan until the trial ended. Then, all rabbits were killed and tissue samples were removed from IR areas. After disposed with routine histological methods and stained with hematoxylin and eosin (HE), these samples were examined by light microscopy. The expression of ICAM-1 and VCAM-1 were also investigated by employing immunohistochemical SP method in the tissue samples. RESULTS: Degree of damage in cardiocytes and of neutrophil infiltration were more serious in IR group than those in sham group (P

Objective To quantify aqueous flare and cells in the eyes of healthy subjects and to evaluate the effect of age and sex on the blood aqueous barrier. Design Prospective case series. Participants Four hundred and forty-two eyes of 221 healthy sub- jects. Methods Aqueous flare and cells of 442 eyes were evaluated with FC-2000 laser flare cell meter (LFCM). Main Outcome Mea- sures Aqueous flare and cells. Results The mean flare values of all of eyes was 4.7?2.9 pc/ms, it was 3.1 pc/ms in the age group of less than 10 years, 3.8 pc/ms in the age group of 40-49 years and 11.0 pc/ms in the age group of 80 years or over. The mean flare val- ues in the age groups of 50 years or over were significantly higher than that in the age group of 40-49 years (P

By using whole blood selenium, 24 hr urinary selenium and hair selenium contents as the indices of assessing human selenium status, it was found that the populations in the endemic areas of Keshan disease were practically in a selenium poor status. The selenium contents in locally grown staple grains and daily diets in the endemic areas were also lower than those in the non-endemic areas. In an area covering a cross section of Keshan disease geographic belt in our country, the hair selenium contents of agricultural populations were measured. The results indicated that all the hair selenium contents in the endemic sites were always at a lower level, whereas those in the non-endemic sites distant from the endemic areas were generally at a higher level; they decreased gradually until the endemic areas were reached; and finally, along the contiguous region of the endemic and non-endemic areas they were insignificantly different.The hair selenium contents among the agricultural populations were significantly lower than those among the non-agricultural ones in the same endemic areas. However, no regular correlation had been observed between the seasonal prevalence of Keshan disease and the variation of hair selenium contents in the same populations living in the same endemic sites.It is considered that the endemic areas of the disease seem to be a Se-deficiency belt, and Se-deficiency probably might be a pathogenic geo-gen in the prevalence of Keshan disease.

Objective To analyze the factors that influence the disease-free survival time after radical prostatectomy for prostate adenocarcinoma and to study the expression and significance of Bcl-2,C-erbB-2,Ki-67 in prostate adenocarcinoma. Methods A total of 51 cases of prostate adenocarcinoma undergoing radical prostatectomy were reviewed.Cox proportional hazard model was used to investigate the impact and co-impacts of the factors,which included age, preoperative PSA level,Gleason scores of biopsies and operative specimens,EPE,MR,SVI,LN,PAT,PRT and having testes or not during follow-up.Immunohistochemical staining was used in biopsies and resected specimens to evaluate the positivity of Bcl-2,C-erbB-2,Ki-67 in 15 of the 51 cases. Results In stepwise Cox proportional hazards model, the prognostic factors for recurrence were age(P=0.011),maximal androgen blockade(P=0.017), positive margin of resection(P=0.000),postoperative Gleason score(P=0.002),having testes or not after operation(P=0.040).The expressions of 3 types of proteins showed negative correlation with the prognosis of prostate carcinoma. Conclusions Among clinicopathologic factors,positive resected margin is the most powerful prognostic factor.Patients will benefit from maximal androgen blockage before radical prostatectomy.Disease-free survival after radical prostatectomy is not influenced by not having pelvic lymphadenectomy after finding no enlarged lymph nodes intraoperatively.Not preserving testes after prostatectomy is a favorable factor.The prognosis of prostate carcinoma can be predicted with the expressions of Bcl-2,C-erbB-2 and Ki-67 in biopsies or resected specimens.

[ ABSTRACT] AIM: To investigate the effect of chronic intermittent hypoxia on AMP-activated protein kinase ( AMPK) pathway in the brain of young rats.METHODS:Part one:SD mice (3~4 weeks old) were randomly divided into 4 groups (n=8): simulated air control group for 2 weeks (2AC), chronic intermittent hypoxia group for 2 weeks (2IH), simulated air control group for 4 weeks (4AC) and chronic intermittent hypoxia group for 4 weeks (4IH).Part two:SD mice (3~4 weeks old) were randomly divided into 2 groups (n=8): chronic intermittent hypoxia group for 4 weeks (4IH) and chronic intermittent hypoxia group treated with AMPK inhibitor for 4 weeks (4IHI).After modeling, the eight-arm maze test was performed.TUNEL method was used to detect the neuronal apoptosis in the hippocampal and pre-frontal cortical tissues.The mRNA expression of adenosine A2a receptor was examined by RT-qPCR, and the protein levels of phosphorylated AMPK (p-AMPK) and mammalian target of rapamycin (p-mTOR) were determined by Western blot.
RESULTS:Compared with control group, the numbers of reference memory error ( RME) , working memory error ( WME) and total error (TE) in 2IH group and 4IH group significantly increased (P<0.01).Compared with 2IH group, the num-bers of errors in 4IH group also increased significantly (P<0.01).Compared with 4IH group, the values in 4IHI group significantly decreased.Compared with control group, the neuronal apoptosis of hippocampus and prefrontal cortex in 2IH group and 4IH group increased, and that in 4IH group was more evident (P<0.05).In 4IHI group, the neuronal apopto-sis decreased.The mRNA expression of adenosine A2a receptor in the hippocampal and cortical tissues in 2IH group and 4IH group was higher than that in control group.The protein level of p-AMPK was higher, and p-mTOR was lower in 2IH group and 4IH group, and those in 4IH group were more evident (P<0.05).Compared with 4IH group, the protein level of p-AMPK was lower, and p-mTOR was higher in 4IHI group.CONCLUSION: Chronic intermittent hypoxia induces neuronal apoptosis, resulting in impairment of learning and memory in a time-dependent manner by upregulating adenosine A2a receptor, activating AMPK activity, and inhibiting mTOR phosphorylation in rats.