The corneal transparency is one of the important basic conditions for realizing normal physiological functions of visual organs. Also corneal endothelial cells are important conditions for maintaining normal corneal transparency. Therefore, only to ensure the morphology and physiological integrity of the corneal endothelial, can have normal vision. However, intraocular surgeries inevitably cause damage to corneal endothelial cells. This paper will review the effects of glaucoma surgery on corneal endothelial cells.

AIM:To study the visual acuity and refractive status of students pupils and middle school students in Shenzhen, and to provide a scientific basis for the prevention and control of myopia.
METHODS:A cluster sampling method was used to select five primary school students(6 737) and three junior middle school students(1 925) from Shenzhen. The visual acuity, anterior segment, fundus, eye position, and refractive status were measured. Information on associated factors for poor vision were also obtained using a questionaire. The risk factors of poor vision and the rate of myopia between grade or gender were analysed by Chi-square test.
RESULTS:The rate of poor vision was 67. 0%. Female, family history of high myopia, long time of continuous look near, short time of outdoor activities were the main risk factors. The rate of emmetropia, hyperopia, astigmatism and myopia were 15. 1%, 11. 3%, 11. 0% and 62. 6% respectively. Emmetropia, hyperopia and astigmatism incidenece rate decreased with age growing, but myopia incidence rate was increased. There were significant differences between adjacent two grades in myopia(χ2=7. 338-45. 018, P<0. 05 ) except the primary grade six and the junior grade one. There were significant differences between boys ( 61. 0%) and girls ( 65. 5%) in myopia(χ2=17. 180, P<0. 05).
CONCLUSION:The rate of poor vison is pretty high in students of Shenzhen aged between 5 to 16 years old, and myopia is the main reason. The development rate of myopia is increased with age. Early management of myopia may play an important role in controlling poor vision in students.

Aged ; Female ; Fluorobenzenes ; therapeutic use ; Humans ; Hyperlipidemias ; blood ; drug therapy ; genetics ; Polymorphism, Genetic ; genetics ; Pyrimidines ; therapeutic use ; Rosuvastatin Calcium ; Sulfonamides ; therapeutic use

Objective To investigate the expression change of inhibitory member of the ASPP family(iASPP) and its relationship with clinicopathological features and prognosis in the patients with nasopharyngeal carcinoma(NPC).Methods One hundred and thirty-three cases of nasopharyngeal carcinoma confirmed by pathology in the hospital were selected,at the same time 30 cases of nasopharyngeal chronic mucositis biopsy paraffin blocks previously collected in the pathology department served as the control group.The immunohistochemical staining was used to compare the expression of iASPP protein in the two groups and the relationship between the expression of iASPP with the clinicopathologic characteristics and prognosis in the patients with NPC was analyzed.Results The positive expression of iASPP protein in the nasopharyngeal carcinoma tissue was 72.18％,which was higher than 20.00％ in the control group(P＜0.05);the positive expression of iASPP protein in the nasopharyngeal carcinoma tissue had a certain relationship with the primary tumor range and lymph node metastasis(P＜0.05);92 cases of nasopharyngeal carcinoma were followed up,including 63 cases of iASPP protein positive expression and 29 cases of iASPP protein negative expression,the 5-year survival rate in the patients with iASPP protein positive expression was 71.43％,which in the patients with iASPP protein negative expression was 86.21％,the difference was not statistically significant(P＞0.05).Conclusion The iASPP expression in the nasopharyngeal carcinoma tissue is up-regulated,which is related to the lymph node metastasis and the primary tumor range,but its influence on the patient's prognosis is not significant.

Objective To study the relationship between psychological healthy status and stress origins among new nurses from grade A class 3 hospital of Beijing so as to provide relevance evidence for nursing management.Methods Totals of 155 new nurses that working time less than one year in three grade A hospitals were investigated with Nurses Stress Origins (NJSI) and Self-rating Symptom Scale (SCL-90).Results The main stress origin of new nurses was the allocation between working time and workload,with the score (2.71±0.71 ),and the problem of nursing specialty and work was followed with the score (2.51±0.61 ).The average score of psychological healthy was (53.03±46.33 ) and that of normal sample was ( 129.96±38.76),and the difference was statistically significant (t=1.631,P＜0.05 ).Every factor of nurses stress origins was positively correlated with psychological healthy status.The night shift was positively correlated with nurses stress origins.The difference was statistically significant between the numbers of work shift along with workload and nurses stress origins from speciality.There were statistically difference in work load,working environment,managements and interpersonal relationship between different departments ( F=3.06,0.7254,2.920,2.920,respectively; P＜0.01 ).Conclusions New nurses' stress origins have important influence on their psychological healthy status.Nurses managers should take relevance measures to relieve their work stress and pay attention to psychological need of new nurses to keep their health.

OBJECTIVETo discuss the urine biomarkers in 1,3-butadiene exposed workers, and to provide basement for establishing biological limit value.

METHODS44 BD exposed workers as exposure group and 25 BD non-exposed people as control group including 12 workers in boiler workshop in the same factory and 13 people in one public institute, we collected their in-end-of shift urine, then detected urine BD-derived mercapturic metabolites [3,4-dihydroxybutyl mercapturic acid (DHBMA),1- and 2-monohydroxy-3-butenyl mercapturic acid (MHBMA)] concentrations using UPLC-MS/MS method. Meanwhile, we detected air BD concentration with GC-FID in the workplace, and compared their relationship.

RESULTSlgDHBMA and lg (MHBMA + DHBMA) levels in exposed group (lgDHBMA: 2.51 ± 0.44) µg/L, lg [MHBMA + DHBMA: (2.68 ± 0.27) µg/L] were higher than which in control group (lgDHBMA: (2.20 ± 0.25) µg/L, lg(MHBMA + DHBMA: (2.49 ± 0.34) µg/L), and the differences were significant (P < 0.01). Urine DHBMA was obviously influenced by air BD concentrations (r = 0.539, P = 0.001). The equation of Multiple Regression Analysis was y = 2.417 + 0.520x (x represents air BD dose, and represents urinary DHBMA level). Adjusted R(2) of this model was 0.262. Urinary MHBMA was not affected by smoking, alcohol and years of works.

CONCLUSIONUrine metabolite DHBMA in BD-exposed workers might be major biological exposure indice.

Adult ; Biomarkers ; urine ; Butadienes ; Female ; Humans ; Male ; Middle Aged ; Occupational Exposure ; adverse effects ; Surveys and Questionnaires

0.05).Conclusion The distribution of G990R CASR genotype in PHPT patients is different from healthy women,and R allele is higher in PHPT group.Among PHPT patients,A986S and G990R polymorphisms are associated with serum calcium and ICa levels.Patients with S or G allele have lower levels of serum calcium and ICa.A986S genotype is also associated with serum PTH level and patients with S allele have relatively lower level of PTH.

This study was purposed to investigate the apoptosis-inducing effect of 8-bromo-7-methoxychrysin (BrMChR) on leukemia K562 cells as well as the variation of caspase-3 activity and phosphorylated Akt (p-Akt) expression of K562 cells during the process of apoptosis. MTT assay was used to determine the inhibitory effect of BrMChR on proliferation of K562 cells. Cell apoptosis was assayed by AO/EB staining under fluorescent microscope and flow cytometry with Annexin V-FITC/PI staining. The expression level of p-Akt was measured by Western blot. The results showed that BrMChR had the inhibitory effect on proliferation of K562 cells and could induce apoptosis of these cells in dose-dependent manner, and these effects were significantly stronger than ChR. After treatment of K562 cells with 3 µmol/L ChR for 12 hours, the apoptosis rate was only 3.68%, but the apoptosis rate of K562 cells treated with 3 µmol/L BrMChR was 21.8%. In the same time, the caspase-3 activity significantly increased (p < 0.05), but the expression of p-Akt was down-regulated (p < 0.01). It is concluded that BrMChR can induce apoptosis of K562 cells and with effect stronger than chR. P-Akt may participate in the apoptosis process of K562 cells induced by BrMChR.
Apoptosis ; drug effects ; Caspase 3 ; metabolism ; Cell Proliferation ; drug effects ; Flavonoids ; pharmacology ; Gene Expression Regulation, Leukemic ; Humans ; K562 Cells ; Proto-Oncogene Proteins c-akt ; metabolism

BACKGROUND: High-volume hemofiltration (HVHF) is technically possible in severe acute pancreatitis (SAP) patients complicated with multiple organ dysfunction syndrome (MODS). Continuous HVHF is expected to become a beneficial adjunct therapy for SAP complicated with MODS. In this study, we aimed to explore the effects of fluid resuscitation and HVHF on alveolar-arterial oxygen exchange, the Acute Physiology and Chronic Health Evaluation II (APACHE II) score in patients with refractory septic shock. METHODS: A total of 89 refractory septic shock patients, who were admitted to ICU, the Provincial Hospital affiliated to Shandong University from August 2006 to December 2009, were enrolled in this retrospective study. The patients were randomly divided into two groups: fluid resuscitation (group A, n=41), and fluid resuscitation plus high-volume hemofiltration (group B, n=48). The levels of O2 content of central venous blood (CcvO2), arterial oxygen content (CaO2), alveolar-arterial oxygen pressure difference P(A-a)DO2, ratio of arterial oxygen pressure/alveolar oxygen pressure (PaO2/PAO2), respiratory index (RI) and oxygenation index (OI) were determined. The oxygen exchange levels of the two groups were examined based on the arterial blood gas analysis at different times (0, 24, 72 hours and 7 days of treatment) in the two groups. The APACHE II score was calculated before and after 7-day treatment in the two groups. RESULTS: The levels of CcvO2, CaO2 on day 7 in group A were significantly lower than those in group B (CcvO2: 0.60±0.24 vs. 0.72±0.28, P<0.05; CaO2: 0.84±0.43 vs. 0.94±0.46, P<0.05). The level of oxygen extraction rate (O2ER) in group A on the 7th day was significantly higher than that in group B ( 28.7±2.4 vs. 21.7±3.4, P<0.01). The levels of P(A-a)DO2 and RI in group B on the 7th day were significantly lower than those in group A. The levels of PaO2/PAO2 and OI in group B on 7th day were significantly higher than those in group A (P<0.05 or P<0.01). The APACHE II score in the two groups reduced gradually after 7-day treatment, and the APACHE II score on the 7th day in group B was significantly lower than that in group A (8.2±3.8 vs. 17.2±6.8, P<0.01). CONCLUSION: HVHF combined with fluid resuscitation can improve alveolar- arterial-oxygen exchange, decrease the APACHE II score in patients with refractory septic shock, and thus it increases the survival rate of patients.

Objective To observe the effects of mutant hypoxia-inducible factor-1α ( HIF-1α) adenovirus ( Adeno-HIF-1α-Ala402-Ala564 ) on cardiomyocytes ( CMCs ) differentiation from the mesenchymal stem cells ( MSCs) co-cultured with CMCs. Methods Following groups were studied: HIF-1α group ( MSCs + CMCs + Ad-HIF-1α), LacZ group ( MSCs + CMCs + Ad-LacZ) , Sham group (MSCs + CMCs + PBS) and MSC + HIF-la Group ( MSCs + Ad-HIF-1α). MSCs were co-cultured with myocardial cells in proportion of MSCs: CMCs 1:2, after 24 hours, cells were infect with virus (MOI = 100) or treated with PBS, cardiac troponin (cTnT) expression in MSCs was detected 7 days post infection by immunochemical analysis, mRNA expression of HIF-la, TGF-B,, Smad4, NKx2.5, GATA-4 was also detected by RT-PCR. Results HIF-la increased MSCs differentiation to myocardial cells (differentiation rate 32. 68%±6. 52% vs. 8. 28% ± 0.09% in the LacZ group and 10. 25 % ±2. 20% in the Sham group and 0.32% ±0.05% in the MSC group (all P< 0.05 vs. HIF-la group). mRNA expression of HIF, TGF-β1, Smad4, NKx2. 5 and GATA-4 was also significantly upregulated in HIF-1α group all P <0. 05 vs. Sham group). Conclusion HIF-1α promoted MSCs, co-cultured with myocardial cells, differentiating to cardiomyocytes via upregulating TGF-β1/Smad4 signaling pathway.