Objective To investigate the effect of silment information regulator factor related enzymes 1 (SIRT1) on the apoptosis of retinal ganglion cells (RGCs) in rats with diabetic retinopathy and its downstream molecular mechanisms.Methods Together 60 healthy male Sprague-Dawley rats were collected and randomly divided into normal group,diabetic group,SIRTI activator-resveratrol treatment group (treatment group),and diabetic rat model was induced by intraperitoneal injection of streptozotocin at 60 mg · kg-1 in the latter two group rats,while the normal group was injected with sodium citrate buffer at 60 mg · kg-1.Then,after 72 h,rats with blood glucose ＞ 16.7 mmol · L-1 were designated as diabetic rats by blood glucose test.Then each rat in the treatment group was treated with SIRT1 activator-resveratrol at 20 g · kg-1 once a day at the 2nd day after the success of the model,and the normal group and diabetic group were given methylene chloride.Finally,after immunohistochemical staining for retina,TUNEL assay was used to evaluate the apoptosis of RGCs,while the expression of SIRTI,p38 MAPK and Caspase-3 protein was detected by Western blot.Results The apoptotic index of RGCs in the normal group,diabetic group and treatment group was (0.848+0.131)％,(19.038 + 1.327)％,(10.461 + 1.089)％ respectively at 8 weeks,and the difference among the three groups was statistically significant (F =670.497,P =0.000),while the differences between each two groups were also statistically significant (all P =0.000).Furthermore,when compared with the normal group (0.132 ± 0.043),the expression of SIRT1 protein in the diabetic group (0.060 ± 0.028) and the treatment group (0.073 ± 0.026) was significantly decreased,and the overall difference among the three groups was statistically significant (F =1 310.663,P =0.000),while the differences between each two groups were also statistically significant (all P =0.000).The expression levels of p38 MAPK and Caspase-3 were increased in diabetic group (1.121 ± 0.082,0.266 ± 0.005) and treatment group (0.574 ± 0.012,0.190 ±0.060) respectively,and the overall difference and pairwise comparison in the three groups approached statistically significance (all P =0.000,0.000).Conelusion Up-regulation of SIRT1,can inhibit the apoptosis of RGCs,and protect RGCs against apoptosis in rat model of diabetic retinopathy,which may be correlated with the downregulation of p38 MAPK signal pathway.

Objective To investigate the effect of ZnO nanoparticles on the expressions of plasma membrane calcium ATPasel (PMCA1) of human lens epithelial cell B-3 (HLEB-3) at both mRNA and protein levels in the presence and absence of ultraviolet B (UVB) irradiation.Methods HLEB-3 was cultured in RPMI 1640 medium,and the cytotoxic effect of different concentrations of ZnO (0 μg · mL-1,2.5 μg · mL-1,5.0μg · mL-1,10.0 μg · mL-1) on HLEB-3 was investigated in the presence and absence of UVB irradiation.DAPI staining was used to monitor the effect of ZnO on HLECB-3 nuclei,and cell apoptosis was evaluated using annexin V-FITC/PI staining in the presence and absence of UVB irradiation.In addition,the intracellular calcium ion (Ca2 +)levels were assayed using Fluo-3/AM staining,and the expression levels of both PMCA1 mRNA and protein within HLEB-3 were detected by real-time PCR and Western blot,respectively.Results DAPI staining showed that the ZnO-treated HLEB-3 displayed a concentration-dependent apoptosis,and UVB irradiation could further aggravate the cytotoxic effect of ZnO on HLEB-3.In addition,in the presence of UVB irradiation,concentration gradient of ZnO (2.5 μg · mL-1,5.0 μg · mL-1,10.0 μg · mL-1) increased the intracellular calcium ion levels [from (156.34 ±4.59) nmol · L-1 to (173.88 ±7.17)umol · L-1,(289.02 ± 9.09) nmol · L-1,(488.36 ± 48.16) nmol · L 1,respectively] and upregulated HLEB-3 apoptosis,with statistical difference (all P ＜ 0.05).Moreover,the expression level of PMCA1 in the 2.5 μg · mL-1,5.0 μg · mL-1,10.0 μg · mL-1 ZnO-treated epithelial cells was accordingly 0.75,0.57 and 0.41 as much as that in the 0μg · mL-1 ZnO-treated cells in the absence of UVB irradiation (all P ＜ 0.05),and was accordingly 0.64,0.24 and 0.09 in the present of UVB irradiation,with significant difference (all P ＜ 0.05).Conclusion Both ZnO nanoparticle and UVB irradiation can exert cosuppression effect on HLEB-3 via calcium-mediated signaling pathway,indicating it has great potential for the treatment of posterior capsular opacification with UVB irradiation.

OBJECTIVETo identify and analyse the different species, same species in different regions and confusion species.

METHODNear-infrared diffuse reflectance spectrometry was used.

RESULTClustering analysis showed that clustering relations were far among different Gryllotalpa species and close among the same species from different regions, and there were close relations among the same species from near regions and between Teleogryllus emmus and G. orientalis.

CONCLUSIONNear-infrared diffuse reflectance spectrometry method can be used in classification and identification of Gryllotalpa.

Animals ; Cluster Analysis ; Drug Contamination ; Gryllidae ; chemistry ; classification ; Materia Medica ; chemistry ; classification ; Pharmacognosy ; Species Specificity ; Spectroscopy, Near-Infrared

OBJECTIVETo identify the epidemical characteristics of suicidal tendency among middle-school students in cities of China and to explore the main factors leading to suicidal tendency in adolescents.

METHODSMulti-stage cluster sampling method was used to select 9015 students in grades 1, 2, 3 and 4 respectively from 25 general middle schools in Beijing, Hangzhou, Wuhan and Urumqi of China in June 2006 and field investigation was carried out through "China Global School-based Student Health Survey (GSHS) Questionnaire".

RESULTSAmong the students in the four cities, the incidence rates of suicidal ideation were from 14.4% to 20.8% with an average of 17.4%. The incidence rates of suicidal plan were from 6.8% to 9.7% with an average of 8.2% and were different among cities. 15.0% of the boys had suicidal ideation and 6.7% of them made a suicidal plan comparing to 19.7% of girls having had suicidal ideation and 9.5% of them made a suicidal plan. The two kinds of suicidal tendency in girls were all higher than those in boys. City, age, gender, grade, days and type of being bullied, depression, close friends and having received health education on coping with stresses were factors influencing suicidal tendency of students. Days of being bullied and suicidal tendency showed a dose-response relation.

CONCLUSIONSuicidal tendency seemed common in middle-school students. Training on 'coping the issue' should be strengthened and harmonious environment should be improved in middle-schools.

Adolescent ; China ; epidemiology ; Data Collection ; Female ; Humans ; Incidence ; Male ; Students ; psychology ; Suicide ; psychology ; statistics & numerical data ; Urban Population

BACKGROUNDMultiple recurrences are common in non-muscle invasive bladder cancer, but the risk of multiple recurrences has not been fully described. Identifying patients at high risk of multiple recurrences will help to select an optimal therapeutic strategy and to improve prognosis. This study was conducted to identify the risk factors for multiple recurrences of non-muscle invasive bladder cancer.

METHODSWe reviewed the clinical data of all patients with non-muscle invasive bladder cancer in our hospital between January 2003 and February 2010. Patients with at least one recurrence were included. Multivariate analysis was performed for theorized risk factors (age, gender, tumor stage, grade, size, location, number of lesions, adjuvant intra-vesical chemotherapy after transurethral resection, and recurrence-free survival after each resection) to clarify risk factors for multiple recurrences of non-muscle invasive bladder cancer.

RESULTSOf the 278 patients with non-muscle invasive bladder cancer, 84 were with at least one recurrence and a total of 222 recurrences among them were followed up for 6 - 70 months (mean, 36.1 months). Recurrence-free survival after initial resection predicted the overall frequency of bladder cancer recurrence (risk ratio (RR) = 37.83, 95% confidence interval (CI) = 3.45 - 396.13, P = 0.001) and second recurrence (RR = 6.15, 95%CI = 1.28 - 29.57, P = 0.023). Similarly, recurrence-free survival after a second resection was the only significant risk factor for third recurrence (RR = 31.08, 95%CI = 2.53 - 381.47, P = 0.007). Moreover, recurrence-free survival after initial resection was the only significant factor to predict later progression to muscle invasive bladder cancer (RR = 8.62, 95%CI = 1.47 - 58.34, P = 0.001).

CONCLUSIONSRecurrence-free survival after resection is an independent predictor of multiple recurrences of non-muscle invasive bladder cancer. The shorter the period between resection and recurrence is, the higher the risk of multiple recurrences.

Adult ; Aged ; Aged, 80 and over ; Cystectomy ; methods ; Female ; Humans ; Male ; Middle Aged ; Neoplasm Recurrence, Local ; etiology ; Retrospective Studies ; Risk Factors ; Time Factors ; Urethra ; Urinary Bladder Neoplasms ; mortality ; pathology ; surgery

Adolescent ; Adult ; Drugs, Chinese Herbal ; adverse effects ; Female ; Hepatic Veins ; diagnostic imaging ; pathology ; Hepatic Veno-Occlusive Disease ; diagnosis ; etiology ; pathology ; Humans ; Image Processing, Computer-Assisted ; methods ; Liver ; diagnostic imaging ; pathology ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Portal Vein ; diagnostic imaging ; pathology ; Retrospective Studies ; Tomography, X-Ray Computed ; methods ; Young Adult

OBJECTIVEThe study was designed to investigate the clinical characteristics and the effects of therapeutic proposal on Kawasaki disease (KD).

METHODSClinical features, diagnosis and treatment for totally 942 patients with KD hospitalized during Jan, 2000 to Dec, 2004 were reviewed. Clinical features of typical and incomplete KD were compared. Also, influential factors for KD resistant to intravenous immune globulin (IVIG) therapy were analyzed. Five hundred and ten cases were followed up for analyzing the prognosis of coronary artery lesion (CAL).

RESULTS(1) 774 cases were diagnosed as typical KD, and 168 cases as incomplete KD. The incidence of infants with incomplete KD was higher than that of infants with typical KD (18.5% vs. 10.1%, P < 0.01). As compared with typical KD, the cases of incomplete KD had a long duration of fever before final diagnosis [(7.7 +/- 2.9) d vs. (7.0 +/- 2.4) d, P < 0.01], high hemoglobin level [Hb, (106.6 +/- 13.4) g/L vs. (103.5 +/- 12.3) g/L, P < 0.01], high hematocrit [Hct, (32.0 +/- 4.3)% vs. (31.0 +/- 4.0)%, P < 0.01], and high prevalence of CAL (23.8% vs. 16.8%, P < 0.05), respectively. The occurrence rate and emerging time of clinical manifestations in incomplete KD and in typical KD were presented, respectively: non-exudative conjunctivitis [occurrence rate, 64.9% vs. 93.5%; emerging time, (4.4 +/- 1.4) d vs. (4.0 +/- 1.6) d, respectively (P < 0.05 or P < 0.01)], erythema and cracking of lips [occurrence rate, 50.6% vs. 94.8%; emerging time, (4.9 +/- 1.4) d vs. (4.5 +/- 1.6) d, respectively (P < 0.05 or P < 0.01)], rash [occurrence rate, 35.1% vs. 87.7%; emerging time, (3.9 +/- 1.9) d vs. (3.4 +/- 1.7) d, respectively (P < 0.05 or P < 0.01)], erythema and edema of extremity [occurrence rate, 26.8% vs. 71.4%; emerging time, (6.7 +/- 1.5) d vs. (5.3 +/- 1.7) d, respectively (P < 0.01)], cervical lymphadenopathy [occurrence rate, 34.5% vs. 68.0%; emerging time, (4.3 +/- 2.5) d vs. (3.6 +/- 2.2) d, respectively (P < 0.05 or P < 0.01)], strawberry tongue [occurrence rate, 31.0% vs. 59.8%; emerging time, (5.6 +/- 2.2) d vs. (4.9 +/- 1.8) d, respectively (P < 0.05 or P < 0.01)], membranous desquamation of fingertips [occurrence rate, 34.5% vs. 56.3%; emerging time, (11.7 +/- 3.3) d vs. (10.3 +/- 2.7) d, respectively (P < 0.01)], and desquamation peri-anus [occurrence rate, 42.9% vs. 50.0%; emerging time, (6.7 +/- 2.7) d vs. (6.9 +/- 2.5) d, respectively (P > 0.05)]. Except for peri-anus desquamation, other clinical manifestations in incomplete KD were sporadical as compared to typical KD. (2) Six per cent (51/857) of cases were resistant to the IVIG therapy. As compared to the group responding to IVIG therapy, high prevalence of CAL (31.4% vs. 17.1%, P < 0.05), long fever duration [(10.6 +/- 3.9) d vs. (7.5 +/- 2.3) d, P < 0.01], low Hb level [(99.9 +/- 14.1) g/L vs. (104.3 +/- 12.4) g/L, P < 0.01], low Hct [(30.1 +/- 4.5)% vs. (31.2 +/- 4.0)%, P < 0.05], low platelet [PLT, (256.9 +/- 142.4) x 10(9)/L vs. (309.7 +/- 131.5) x 10(9)/L, P < 0.05], and low albumin level [ALB, (27.8 +/- 8.4) g/L vs. (33.5 +/- 6.7) g/L, P < 0.01] were found in the group resistant to IVIG therapy, respectively. (3) In patients who received IVIG 1 g/kg and 2 g/kg, the recovery rates from CAL were 83.1% and 89.7% (P > 0.05), respectively. The prevalence of CAL in those without CAL in acute and subacute stages was 0.9% and 3.5% (P > 0.05), respectively, during 2 year-follow-up period.

CONCLUSION(1) Infants appeared to have more chances to suffer from incomplete KD. Incomplete KD had high prevalence of CAL. The peri-anus desquamation might be an important clue for early diagnosis of incomplete KD. (2) In acute stage, the influential factors for KD resistance to IVIG therapy included prolonged fever, non-elevated PLT, and persistent decrease in Hb, Hct and ALB levels. (3) Children receiving IVIG 1 g/kg and 2 g/kg had the similar effects on recovery and prevention from CAL within the first two years after KD onset.

Adolescent ; Blood Platelets ; drug effects ; Child ; Child, Preschool ; China ; Coronary Aneurysm ; drug therapy ; epidemiology ; etiology ; prevention & control ; Coronary Artery Disease ; complications ; diagnosis ; drug therapy ; physiopathology ; Dose-Response Relationship, Drug ; Female ; Fever ; drug therapy ; physiopathology ; Follow-Up Studies ; Humans ; Immunoglobulins, Intravenous ; administration & dosage ; therapeutic use ; Immunologic Factors ; Infant ; Infant, Newborn ; Male ; Prognosis ; Retrospective Studies ; Risk Factors ; Treatment Outcome

Tripterygium glycosides tablet(TGT),the classical commercial drug of Tripterygium wilfordii Hook.F.has been effectively used in the treatment of rheumatoid arthritis,nephrotic syndrome,leprosy,Behcet's syndrome,leprosy reaction and autoimmune hepatitis.However,due to its narrow and limited treatment window,TGT-induced organ toxicity(among which liver injury accounts for about 40％of clinical reports)has gained increasing attention.The present study aimed to clarify the cellular and molecular events underlying TGT-induced acute liver injury using single-cell RNA sequencing(scRNA-seq)technology.The TGT-induced acute liver injury mouse model was constructed through short-term TGT exposure and further verified by hematoxylin-eosin staining and liver function-related serum indicators,including alanine aminotransferase,aspartate aminotransferase,alkaline phosphatase and total bilirubin.Using the mouse model,we identified 15 specific subtypes of cells in the liver tissue,including endothelial cells,hepatocytes,cholangiocytes,and hepatic stellate cells.Further analysis indicated that TGT caused a significant inflammatory response in liver endothelial cells at different spatial locations;led to marked inflammatory response,apoptosis and fatty acid metabolism dysfunction in hepatocytes;activated he-patic stellate cells;brought about the activation,inflammation,and phagocytosis of liver capsular macrophages cells;resulted in immune dysfunction of liver lymphocytes;disturbed the intercellular crosstalk in liver microenvironment by regulating various signaling pathways.Thus,these findings elaborate the mechanism underlying TGT-induced acute liver injury,provide new insights into the safe and rational applications in the clinic,and complement the identification of new biomarkers and ther-apeutic targets for liver protection.

OBJECTIVETo assess the role of transrectal ultrasonography (TRUS) in the etiological diagnosis of male obstructive azoospermia.

METHODSWe retrospectively analyzed the clinical data and TRUS findings of 695 patients with obstructive azoospermia from January 2007 to May 2009.

RESULTSConcerning the etiology of obstructive azoospermia, the main TRUS findings included ejaculatory duct abnormality (29.2%), seminal vesicle abnormality (25.4%) and prostate midline cyst (18.5%). TRUS revealed 203 cases of ejaculatory duct dilation, 177 cases of seminal vesicle abnormality (including 108 with absence or agenesis and 51 with dilation of the seminal vesicle), and 128 cases of prostate midline cyst (including 75 with ejaculatory duct cyst and 39 with Müllerian cyst). Calcification of the verumontanum or ejaculatory duct was suspected to be the causes of obstructive azoospermia in 34 cases. However, no significant etiological abnormality was found in 153 cases. Obvious etiology was shown by TRUS in 78.0% of the patients.

CONCLUSIONTRUS can clearly display the structural abnormality of the ejaculatory duct and seminal vesicle, and provide important information on the etiology of male obstructive azoospermia.

Adult ; Azoospermia ; diagnostic imaging ; etiology ; Humans ; Male ; Middle Aged ; Rectum ; diagnostic imaging ; Retrospective Studies ; Ultrasonography

Objective To investigate the attributable risk(AR)of Acinetobacter baumannii(AB)infection in criti-cally ill patients.Methods A multicenter retrospective cohort study was conducted among adult patients in inten-sive care unit(ICU).Patients with AB isolated from sterile body fluid and confirmed with AB infection in each cen-ter were selected as the infected group.According to the matching criteria that patients should be from the same pe-riod,in the same ICU,as well as with similar APACHE Ⅱ score(±5 points)and primary diagnosis,patients who did not infect with AB were selected as the non-infected group in a 1:2 ratio.The AR was calculated.Results The in-hospital mortality of patients with AB infection in sterile body fluid was 33.3％,and that of non-infected group was 23.1％,with no statistically significant difference between the two groups(P=0.069).The AR was 10.2％(95％CI:-2.3％-22.8％).There is no statistically significant difference in mortality between non-infected pa-tients and infected patients from whose blood,cerebrospinal fluid and other specimen sources AB were isolated(P＞0.05).After infected with AB,critically ill patients with the major diagnosis of pulmonary infection had the high-est AR.There was no statistically significant difference in mortality between patients in the infected and non-infec-ted groups(P＞0.05),or between other diagnostic classifications.Conclusion The prognosis of AB infection in critically ill patients is highly overestimated,but active healthcare-associated infection control for AB in the ICU should still be carried out.