Accidents, Occupational ; statistics & numerical data ; Adolescent ; Adult ; Aged ; Female ; Follow-Up Studies ; Hand Injuries ; epidemiology ; etiology ; Humans ; Male ; Middle Aged ; Prognosis ; Retrospective Studies ; Young Adult

AIM To determine the antagonistic activities of new endothelin receptor antagonist CPU0214 on the left ventricle membranes and the aorta ring contraction in normal rat and its reduction effect on the mean arterial pressure in conscious DOCA salt hypertensive rats. METHODS Left ventricle membranes of normal rat hearts achieved for competition binding assay was used to investigate the antagonistic effects of CPU0214. Aorta ring contraction induced by ET 1 in normal rat was used to investigate the antagonistic activity of CPU0214. DOCA salt hypertensive rats were induced by injection of deoxycorticosterone acetate (DOCA, sc) following with 1% NaCl as drinking for 4 wk. A multiple physiological recorder was used to record the mean arterial pressure of femoral artery. The endothelin receptor change in the left ventricle membranes of DOCA salt hypertensive rat was measured by binding assays. Intraperitoneal injection of CPU0214 was used to investigate its effect on reduction of mean arterial pressure. RESULTS In the left ventricle the IC 50 of endothelin receptor antagonist CPU0214 is 16 nmol?L -1 and CPU0214 (10 ?mol?L -1 ) inhibited the ET 1 induced isolated aorta rings contraction in normal rats. Mean arterial pressure as well as B max and K d of left ventricle were increased significantly in DOCA salt hypertensive rat. CPU0214 (60 mg?kg -1 ip) significantly reduced the mean arterial pressure of conscious DOCA salt hypertensive rats especially during 60～90 min after administration. CONCLUSIONS CPU0214 has significantly antagonistic effects on the left ventricle membrane and the isolated aorta ring contraction in normal rat, which is verified by CPU0214 as a strong endothelin receptor antagonist. Furthermore its effect on the mean blood pressure reduction in conscious DOCA salt hypertensive rats, which is manifested as an abnormal endothelin system, shows its prosperity of drug development value as a new endothelin receptor antagonist.

? AIM: To explore the curative effect of dacryocystorhinostomy under endoscopy with mitomycin for the treatment of chronic dacryocystitis.?METHODS: Totally 73 cases ( 78 eyes ) with chronic dacryocystitis were treated with dacryocystorhinostomy under endoscopy with mitomycin and followed up for 6-12mo.?RESULTS: In the 73 patients, 66 cases with 70 eyes (90%) were cured, 2 cases with 3 eyes (4%) improved, 5 cases with 5 eyes ( 6%) not changed. In the recurrent 5 eyes, 2 eyes were treated under endoscopy to remove granulation, enlarge the opening, then anesthetic tube was placed after cotton sheet with 0. 4g/L mitomycin was put on the incision for 5min. The rest 3 eyes were treated in superior hospital with laser, and all were successful. There was no severe complication observed.?CONCLUSION:Dacryocystorhinostomy under endoscopy with mitomycin for chronic dacryocystitis is effective.

Objective There is little population-based data on the prevalence and the environmental or genetic determinants of left ventricular hypertrophy (LVH) in China. The purpose of this paper is to study LVH in relation to systolic blood pressure and the angiotensin converting enzyme (ACE) insertion/deletion(I/D) polymorphism in Chinese. Methods We recorded 12-lead ECG (CardioSoft, v4.2) in 1365 residents in the Jingning County, Zhejiang Province, China. LVH was defined according to the gender-specific Sokolow-Lyon and Comell product ECG criteria. Results Regardless of whether the Sokolow-Lyon or Comell product ECG criteria was used, the prevalence of LVH (20.7% and 4.8%, respectively) significantly (P<0.0001) increased with male gender (odds ratio [OR] 2.33 and 7.15) and systolic blood pressure (per 10 mm Hg increase, OR 1.46 and 1.33). If the Sokolow-Lyon criteria was used, the prevalence of LVH was also influenced by alcohol intake (OR 1.44, P=0.03) and body mass index (OR 0.83, P=0.0005). The association between the Sokolow-Lyon voltage amplitude and the ACE I/D polymorphism was dependent on antihypertensive therapy (P=0.01). In 1262 untreated subjects, but not 103 patients on antihypertensive medication, the ACE DD compared with Ⅱ subjects had significantly higher Sokolow-Lyon voltage amplitudes (29.8±0.6 vs. 28.0±20.5 mV, P=0.02) and higher risk of LVH (OR 1.74, 95% CI: 1. 12-2.69, P=0.01). Conclusion LVH is prevalent in Chinese, and is associated with systolic blood pressure and the ACE D allele. The genetic association might be modulated by antihypertensive therapy.

Adenocarcinoma, Clear Cell ; Female ; Humans ; Middle Aged ; Nasal Cavity ; Nose Neoplasms

BACKGROUND:Hereditary factor occupies a certain position in suicidal behavior of depression. The researches in the past are focused on the hereditary effect on bipolar depression suicide.How do hereditary patterns and effects work in suicidal behavior in unipolar depression?OBJECTIVE: To probe into hereditary patterns and effects on suicidal behavior in unipolar depression.DESIGN:Retrospective investigation.SETTING:A municipal psychiatric hygienic centerPARTICIPANTS:Unipolar depression group included 115 outpatients and inpatients diagnosed in Wuxi Psychiatric Hygienic Center from June 1st 1983 to May 31st 2002.The diagnosis tallied with Standards on Depression Onset in Categories and Diagnostic Standards on Psychiatric Disturbance in China of 3rd Edition and with Standards on Severe Depression Onset in Manual of Diagnosis and Statistics of Psychiatric Disturbance in America of 4th Edition.The attack frequency of all the cases ≥ 3 times or the cases had been relieved ≥8 years after a couple of attacks.METHODS:The patients who tallied with the standards on unipolar depression received the investigation in every family tree under the instruction of 2 physicians-in-charge and more than 2 physicians and filled up the self-made investigation form of psychiatric family tree,including mainly the data of social demography of patients and their first grade relatives,characters of disease onset,frequency of attack,history of treatment and suicide. After re-diagnosed by 2 physicians-incharge and more than 2 physicians and checked by one physician-incharge,the cases were collected in patient group. The interview was carried on for the patients with suicidal behavior among all of the survived patients (107 cases) and first grade relatives (14 cases).The interview (337 cases) and investigation with letter (380 cases) were carried on for the first grade relatives without suicidal behavior. The investigation forms of 13 dead cases (8 cases of patients, 5 cases of first-grade relatives) were provided and filled-up by one or two first grade relatives. Two researchers interviewed the cases in the control,inquired the first grade relatives and filled up the investigation form of family tree.Single factor analysis was used for all the data and Falconer pattern of polygenetic threshold-value theory was used to estimate hereditary rate and standard error in suicidal behavior.Separation analysis in medical hereditary mathematic method and polygenetic threshold-value theory were applied to discuss the hereditary patterns.MAIN OUTCOME MEASURES:Hereditary effects and patterns of suicidal behavior in unipolar depressed patients.RESULTS:Suicidal risk of unipolar depressed patients(51.30%,59/115)was higher than their first grade relatives (2.58%,19/736) (x2=283.16,P ＜ 0.01).Suicidal risk of the first grade relatives (2.58%,19/736) of unipolar depressed patients was higher than the control (0.12%,3/2469)(x2=50.36,P ＜ 0.01).Suicidal risk of the first grade relatives of the patients with suicidal behavior (3.8%,14/372) was higher than that of the first grade relatives of the patients without suicidal behavior (1.4%,5/363)(x2=4.14,P＜ 0.05).The weighted average hereditary rate and standard error was (70.16±0.79)% for suicidal behavior in unipolar depression.The predictive morbidity of suicidal behavior in the first grade relatives was 3.1% and the real morbidity was 2.6%,which did not indicate significant difference (u =0.766, P ＞ 0.05).CONCLUSION:Suicidal behavior of unipolar depression presents obvious hereditary effects and its hereditary patterns tally with polygenetic inheritance.

Aim To study the effects of cycle arrest and molecular mechanism in human leukemia HL-60 cells induced by diallyl disulfide ( DADS ) . Methods Cell count, colony formation in soft agar experiments and flow cytometry analysis were employed to observe the DADS-induced cell growth inhibition and the effect of cycle arrest in HL-60 cells. The expressions of Chk1/2 and its downstream element in HL-60 cells were detected by Western blot. Results Cell count revealed that population doubling time increased to 35. 03 h and 71. 82 h, respectively, from 19. 14 h in HL-60 cells treated with 60 and 120 μmol·L-1 DADS ( P<0. 05 ) . Colony formation in soft agar experiments showed that colony formation inhibition rate of HL-60 cells exposed to 30, 60, 90 and 120μmol·L-1 DADS increased to 35. 06%, 62. 10%, 93. 79% and 99. 35%, respectively ( P<0. 05 ) . Flow cytometry a-nalysis exhibited that HL-60 cells treated with 60 and 120 μmol · L-1 DADS for 24 h and 48 h arrested in G2/M phase in a concentration-and time-dependent manner ( P <0. 05 ) . Western blot disclosed that the expression of p-Chk1 increased in a time-dependent manner ( P <0. 05 ); however, Chk1, Chk2 and p-Chk2 were not changed in HL-60 cells treated with 60μmol·L-1 DADS (P >0. 05). The expression of Cdc25C, CyclinB1 and CDK1 decreased after treated with 60 μmol·L-1 DADS in a time-dependent manner ( P<0. 05 ) , but the expression of 14-3-3 protein did not change ( P>0. 05 ) . Conclusion DADS can in-hibit the proliferation of HL-60 cells, and induce G2/M arrest through Chk1/Cdc25 C/CyclinB1/CDK1 path-way.

To remedy the limitations of traditional numerical classification softwares,a new application,X-Cluster,was developed by using various design patterns.X-Cluster had powerful functions to support the researching of numerical classification,and testified by some classify studying about Bacillus spp..

OBJECTIVETo investigate the protective effect of mouse astrocyte-conditioned medium (ACM) on hypoxic and mechanically injured neurons by a cell model in vitro, and to explore the possible mechanism.

METHODSThe model of hypoxic neuronal injury was caused by 3% O2 in three-gas incubator. Neurons were cultured with ordinary medium or 20% ACM respectively and randomly divided into hypoxic group (hypoxia for 4, 8, 24 h and marked as H4R0, H8R0, H24R0) and hypoxia reoxygenation group (H4R24, H8R24, H24R24). Mechanical injury model was developed by scratching neurons cultured in 20% ACM or ordinary medium to different degrees. Neurons in both medium were divided into normal control group, mild, moderate and severe injury groups. The 20% ACM was added 24 h before hypoxia/reoxygenation or mechanical injury. The morphology and survival of neurons were observed and counted by trypan blue staining. The concentration of NO, lactic dehydrogenase (LDH) and membrane ATPase activity were detected by corresponding kits.

RESULTSIt was showed that 20% ACM can obviously promote the survival rate of hypoxia/reoxygenated neurons and scratched neurons as well. The morphology and number of neurons exposed to hypoxia or scratch injury showed great difference between groups with or without ACM treatment. Compared with control group, the concentration of NO and LDH was much lower in hypoxic/reoxygenated neurons treated with 20% ACM, and the ATPase activity was higher. For the mechanical injury model, neurons with moderate injury also revealed a lower NO and LDH concentration than the control group. All the differences were statistically significant (P less than 0.05).

CONCLUSIONACM can promote the survival and functional recovery of neurons following hypoxia or scratching to a certain degree. The mechanism may be associated with reducing the synthesis and release of NO and LDH as well as increasing the activity of membrane ATPase.

Animals ; Astrocytes ; physiology ; Cell Hypoxia ; Cell Survival ; Cells, Cultured ; Culture Media, Conditioned ; Mice ; Nerve Growth Factors ; physiology ; Neurons ; physiology

OBJECTIVETo investigate the polymorphism of human cytomegalovirus (HCMV) UL150 open reading frame (ORF) in low-passaged clinical isolates, and to study the relationship between the polymorphism and different pathogenesis of congenital HCMV infection.

METHODSPCR was performed to amplify the entire HCMV UL150 ORF region of 29 clinical isolates, which had been proven containing detectable HCMV-DNA using fluorescence quantitative PCR. PCR amplification products were sequenced directly, and the data were analyzed.

RESULTSTotally 25 among 29 isolates were amplified, and 18 isolates were sequenced successfully. HCMV UL150 ORF sequences derived from congenitally infected infants were high variability. The UL150 ORF in all 18 clinical isolates shifted backward by 8 nucleotides leading to frame-shift, and contained a single nucleotide deletion at nucleotide position 226 compared with that of Toledo strain. The nucleotide diversity was 0.1% to 6.8% and the amino acid diversity was 0.2% to 19.2% related to Toledo strain. However, the nucleotide diversity was 0.1% to 6.4% and amino acid diversity was 0.2% to 8.3% by compared with Merlin strain. Compared with Toledo, 4 new cysteine residues and 13 additional posttranslational modification sites were observed in UL150 putative proteins of clinical isolates. Moreover, the UL150 putative protein contained an additional transmembrane helix at position of 4-17 amino acid related to Toledo.

CONCLUSIONHCMV UL150 ORF and deduced amino acid sequences of clinical strains are hypervariability. No obvious linkage between the polymorphism and different pathogenesis of congenital HCMV infection is found.

Amino Acid Sequence ; Base Sequence ; Cytomegalovirus ; genetics ; isolation & purification ; Cytomegalovirus Infections ; congenital ; virology ; DNA, Viral ; genetics ; Genes, Viral ; Genetic Variation ; Humans ; Infant ; Infant, Newborn ; Molecular Sequence Data ; Open Reading Frames ; Polymorphism, Single Nucleotide ; Sequence Homology, Amino Acid ; Viral Proteins ; chemistry ; genetics