Cystatin Cystatin(CST)is a class of proteins that inhibit cysteine proteases and are widely distributed in human body fluid and secretion.The present study shows that the CST superfamily is closely related to the tumor,in which the cysteine protease inhibitor SN is the product expressed by the CST1 gene and is abnormal expression in various tumors.However,its occurrence and development of tumor as well as effects of invasion and metastasis on the specific mechanism is not yet clear.In this paper,we retrospectively analyze the related studies in recent years and review the progress of CST1 gene in tumor.

BACKGROUND: Modern neuroradiological imaging techniques such as CT, MRI, and ultrasound help clinicians idenitify the location and volume of an infarct at present. At present, a widely available and easy laboratory examination for acute cerebral infarction is absent.OBJECTIVE: To investigate the relationship between the content S100-β in serum and infarct volume, and prognosis in patients with acute cerebral infarction.DESIGN: Case-control study.SETTING:Department of Neurology of Shandong Provincial Hospital of Shandong University.PARTICIPANTS: From September 2004 to August 2005, 58 patients with acute ischemic brain infarction less than 24 hours after symptom onset were hospitalized in the Department of Neurology of Shandong Provincial Hospital for evaluation and management and enrolled in case group. With the age of 36-86 years and a mean of (68±14) years. 21 were female and 37 were male. Included criteria: The diagnostic criteria was consistent with that of the Second China Cerebrovascular Disease Conference. Every patient who participated in the study underwent the examination of MRI or CT of the brain on admission, the patients were confirmed to be ones with cerebral infarction. Exclusion criteria: A history of a previous stroke and/or existing disability. 50 healthy participants in the control group were from Health Examination Center, including 32 male and 18 female aged 43-89 years and a mean of (68±9) years. Age means and gender were not significantly different between the case group and the control group (P＞0.05).METHODS:① Venous blood samples (2 mL) were drawn in case group at baseline, 1, 2, 3, 4, 6 and 10 days after symptom onset, and the same agent of samples were drawn in control group only at baseline. Enzymelinked immunosorbent assay was used for S100-β measurement. ② Infarct volume of patient was measured by Simes Somatom sensation cardiac wizard workstation volume for CT on day 7 after symptom onset. Neurological outcome was assessed at 3 months after the onset of symptom with modified Rankin scale (MRS) score.MAIN OUTCOME MEASURES: ① Level of S100-β in serum of the subject in the two groups. ② Final infarct volume of patients in case group on day 7 after symptom onset and functional outcome 3 months after symptom onset.RESULTS: 58 patients and 50 healthy control subjects were enrolled in the study. 6 patients in case group developed complete loss of brain stem reflexes and died within 2 months. The others entered the result analysis.①The level of S100-β protein: The level of S100-β protein increased gradually in the case group, peaked at day 3 [(0.61±0.13) μg/L], and decreased at day 10. The levels of S100-β in 6 days after symptom onset were significantly higher than that in control group. The level of S100-β at day 10 in the case group was similar with the control group. ② The level of serum S100-β content in patients of case group: The serum S100-β content were obviously correlated with the infarct volume at 1, 2, 3, 4, 6days after the symptom onset. S100-β value at day 3 provided the highest correlation coefficients (r=0.937, P ＜ 0.001) ③ The status of the cerebral infarction of patients after 3 months: S100-βmeasures and the MRS scores that were obtained 3 months after cerebral infarction revealed highly significant coefficients ranging by bivariate correlations (r=0.507, P ＜ 0.01).CONCLUSION: The content S100-β in serum and infarct volume of the patients with acute cerebral infarction revealed positive correlation. The content S100-β in serum can help to calculate neurological outcome of patients after acute cerebral infarction.

Five hundred and twelve patients with psudohypertrophic muscular dystrophy underwent rapidly minimally invasive muscle biopsy with TZ semi-automatic biopsy needle under intravenous anesthesia. Three hundred and seventy nine samples were taken from quadriceps femoris muscle, while other 133 samples were taken from the deltoid muscle. The pathological diagnosis was obtained in all patients and there were no complications after biopsy. The results indicated that this method was simple, safe, effective, indolent, and minimally invasive. The obtained muscle samples can meet the request of histopathological and immunohistochemical examination and the method should be recommended for clinical applicatioa.

OBJECTIVE: To investigate the sleep monitoring feature of the MSMS in elderly patients with OSAHS. METHOD: One hundred and ninety patients diagnosed with OSAHS were divided into elderly group and non elderly group according to age, then the results of MSMS were analyzed. RESULT: Majority elderly patients were with mild to moderate OSAHS. The nocturnal mean blood oxygen and the lowest oxygen were higher than non elderly group, coupled with higher percentage of the total oxygen saturation < 90% monitoring time (TS90). There was no significant difference in sleep structure between two groups, but the total sleep time of elderly group is lower than the non elderly group, the difference is statistically significant. CONCLUSION The elderly patients with OSAHS were less severe in nature, but the nocturnal hypoxia last longer in the elderly group. There is no significant difference in the sleep structure between the two groups. But the total sleep time decrease in elderly group. With smaller interference, the MSMS is closer to the natural sleep stustus of the subjects.
Aged ; Humans ; Hypoxia ; diagnosis ; Oxygen ; physiology ; Polysomnography ; Sleep ; Sleep Apnea, Obstructive ; diagnosis

Objective To appraise and compare protein expression profiles in sera of patients without or with recurrence following liver transplantation for hepatocellular carcinoma (HCC) using SELDI-TOF-MS technique,and establish the diagnostic and predictive model. Methods A total of 76 sera (41 from disease free survival patients and 35 from recurrence individuals) were collected pretransplantation and differentially expressed proteins were identified by SELDI-TOF-MS. The intensity values for each peak were analyzed by Biomarker Wizard Software to screen serum proteome biomarkers related to the recurrence post-transplantation. By using Biomarker Patterns Software, the classification trees were generate. from randomly selected samples (30 fingerprints obtained from each group). The sensitivity and specificity of best decision tree were then chosen for blind test with 16 samples (5 from recurrence individuals and 11 from recurrence-free survival patients). Results There were significant differences only in tumor size and the presence of vascular invasion between recurrence group and recurrence-free survival group (P＜0.05). According to serum protein fingerprints, a total of 368 protein peaks were identified at the mass-to-charge ratio (M/Z) value ranging from 2000 to 300 00. There were 22 significant differential proteins between two groups. Among them, 9 proteins were up-regulated and 13 proteins were down-regulated -espectively in recurrence group. The intensity values of differential proteins were input into BPS for classification tree analysis and the best performing tree could distinguish two groups successfully. As a result of blind assessment for this model,a sensitivity of 80.0 % (4/5) and specificity of 72.7 % (8/11) were obtained. Conclusion Some of differential proteins screened by SELDI-TOF-MS technique in the serum may be correlated with the prognoses of liver transplantation patients with HCC. The decision tree may be useful for the clinical application of formulating the indication for liver transplantation, detecting extrahepatic micrometastasis and setting up the diagnostic and treatment strategies.

Objective:To investigate the expression of annexin 5 in rat testis after removing submandibular gland in rats. Methods:On day 14,28 and 42 after the operation,the changes of annexin 5 expression in rat testis were analyzed by Western blot and Immunohistochemistry.Results:Western blot showed that there was a 27.5% and a 35.2% significant increase(P

Objective To report a familial dentinogenesis imperfecta type Ⅱ (DGI type Ⅱ) with a novel splicing mutation in DSPP (dentin sialophosphoprotein) gene.Methods Based on the result of linkage analysis performed previously to map the candidate gene DSPP in the family, the promoter,the first four exons and exon-intron boundaries of DSPP were directly sequenced for the members of the DGI type Ⅱ family. Denaturing high performance liquid chromatography (DHPLC) analysis was performed to confirm the results of sequencing.Results A novel splicing mutation of 23 bp deletion in intron 2 of DSPP gene was identified by DNA sequence analysis. The mutation changed acceptor site sequence from CAG to AAG, and might result in functional abolition of possible branch point site in intron 2. DHPLC result was consistent with that of sequencing. The mutation may be identified in all affected individuals, but not found in normal members of the family and 50 controls.Conclusion These results suggest the deleted mutation of DSPP gene causes DGI type Ⅱ in the family. The mutation has not been reported before.

Objective: To report a case of azoospermia with a karyotype of 45,X,der(Y)t(Y;13)(q11.2;q12),-13,accompanied with slight bilateral gynecomastia and multiple nodules.Methods: The karyotype was identified by karyotyping and FISH,and the breakpoints of the Y chromosome and the copy number of the BRCA2 gene in 13q12 determined by PCR-STS and DNA polymorphic analysis.The testis and nodule tissues of the patient were obtained for biopsy.Results: FISH confirmed SRY and centromere of the Y chromosome on the questionable 13 chromosome and the karyotype to be 45,X,der(Y)t(Y;13)(q11.1;q12),-13.ish der(Y)(SRY+,DYZ3+,wcp13+).PCR-STS showed the deletion of regions AZFa,b and C,with a breakpoint located inYq11.1 below sY82.No deletion of the BRCA2 gene was observed.The patient was diagnosed with Sertoli cell-only syndrome by testicular biopsy and with angiolipomata by pathological examination of the nodule tissue.Conclusion: The patient's phenotype of complete masculinization could be attributed to presence of the SRY gene,and his azoospermia with small testis to the absence of a fragment from Yq11.1 to Yqter.However,the molecular mechanism of angiolipoma remains unknown.

Objective:To assess the validity and reliability of the Chinese version of the eleven-item Kutcher Adolescent Depression Scale (KADS-11)in Chinese adolescents,calculate its optimal cut-off value and the sensi-tivity and specificity,and explore the possibility of providing a useful tool to assess the severity of adolescent de-pressive symptoms.Methods:Totally 3180 students aged 11 -17 years were selected from schools in 6 provinces and Shanghai.All of them were asked to complete the KADS-11 and Children Depression Inventory (CDI). Students whose CDI scores were above 19 (including 19)were diagnosed with the DSM-IV criteria of depressive disorder,73 students from Shanghai sample were assessed with KADS-11 and CDI to analyze the test-retest reliabil-ity 1 month later.Results:Exploratory factor analysis showed that KADS-11 had 2 factors,and confirmatory factor analysis tested proved the 2-factor model fit better than the one-factor model.The KADS-11 total scores were posi-tively correlated with CDI total scores (r =0.74,P <0.01 ),and the KADS-11 scores were higher in depressive group than those in non-depressive group.The mean area under the curve (AUC)of KADS-11was 0.94,the mean area under the curve of each item ranged from 0.7 to 0.9.The optimal cut-off point of KADS-11 was total score≥9,sensitivity and specificity were 89% and 90% respectively.The Cronbach's alpha coefficient of the KADS-11 was 0.84,the spilt-half reliability coefficient was 0.71 (P <0.01),and the test-retest coefficient was 0.77 (P <0.01).Conclusion:The KADS-11 is appropriate for Chinese adolescents because of its good validity,reliability and diagnosis accuracy,it could be used to assess depressive symptoms for adolescents.

Objective:To discuss the characteristics of ultrasound diagnosis of optic disc capillary hemangioma.Methods:The study analyzed retrospectively 7 cases of optic disc capillary hemangioma diagnosed in the Beijing Tongren Hospital from 2015 to 2018. The size, morphology, internal echo, and secondary changes of the lesion were analyzed during ultrasound examination.Color Doppler flow imaging was used to check the blood flow in the lesion.Results:Pre-optic disc occupying lesions could be detected in the ultrasound images of the 7 cases. Lesion size: average base diameters (5.39±1.90)mm×(4.79±1.28)mm, average height (3.61±1.37)mm. Lesion morphology: 5 cases were round, and 2 cases were irregular. Echo within the lesion: 3 cases had medium echo inside the lesion, and 4 cases had high echo inside the lesion. Internal echo characteristics: 5 cases had uniform echo, and 2 cases had uneven echo. Secondary changes: 6 cases had secondary retinal detachment and vitreous opacity, and 1 cases was accompanied by retinal hemangioma in other parts. In all cases, blood flow signals could be detected inside the space-occupying lesions, which were in the form of branches, stripes or spots, and the blood flow spectrum showed a parallel spectrum of arteries and veins.Conclusions:Ultrasound examination of optic disc capillary hemangioma has certain characteristics, which can provide a valuable follow-up basis for clinical diagnosis.