Effect of lacrimal duct laser with lacrimal drainage tubes and stents for complexity dacryagogatresia / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To explore the effect of lacrimal duct laser with lacrimal drainage tubes and stents implantation for complexity dacryagogatresia. METHODS: There were 65 patients ( 82 eyes ) with compound tears nasolacrimal duct obstruction who received lacrimal drainage tubes and stents implantation after laser. The lacrimal duct stents were removed through nasal cavity after 1mo. Lacrimal drainage tubes were removed after 3-6mo. Follow-up periods were 6mo to 1a. RESULTS: In the 65 patients (82 eyes), 71 eyes were cured, 5 eyes improved, the efficient rate was 93%; there were 6 eyes (7%) with epiphora. CONCLUSION: Lacrimal duct laser with lacrimal drainage tubes and stents implantation was efficient for complexity dacryagogatresia.

Hyperammonemia-induced hepatic injury in rats: characterization of a new animal model / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To establish an accurate new rat model of hyperammonemia-induced liver injury for use in studies of the molecular mechanisms underlying acute liver failure (ALF).</p><p><b>METHODS</b>Twenty-six Sprague-Dawley rats were administered D-galactosamine (400 mg/kg) and endotoxin (50 mug/kg) via intraperitoneal injection to induce ALF and sacrificed at 12 h post-injection (ALF-12 group, n = 10) or 24 h post-injection (ALF-24 group, n = 16). Ten rats administered physiological saline served as the control group. In addition, 20 rats were given serial oral administrations of 10% NH4Cl solution (10 ml/kg, every 8 hrs) to establish the hyperammonemia-induced liver injury model; an additional 20 rats were prepared in parallel to serve as the ALF control group (n = 10; D-galactosamine at 800 mg/kg every 6 d for 30 days) and the physiological saline control group (n = 10). Serum samples were collected from each mouse and used to detect markers of liver function, including alanine aminotransferase (ALT), aspartate aminotransferase (AST), alpha-fetal protein (AFP), and gamma-glutamyltransferase (GGT), as well as blood ammonia (BA) level and prothrombin time activity (PT-A). Affects on liver histology was assessed by hematoxylin and eosin staining of resected liver tissues, and on apoptosis by TUNEL assay and calculating the apoptotic index (AI).</p><p><b>RESULTS</b>ALF rats showed elevated levels of ALT (1202.51+/-282.00 U/L), AST (1560.14+/-298.98 U/L), and BA (165.9+/-23.6 mumol/L) as early as 6 hrs after model establishment; these levels peaked at 12 hrs after model establishment (ALT: 774.40+/-207.65 U/L; AST: 967.60+/-121.94 U/L; BA: 143.4+/-18.1 mumol/L; P less than 0.05). No significant variations were detected in the levels of AFP (except for the ALF-24 group) or GGT. Liver tissues of the ALF-12 and ALF-24 groups showed large or diffuse hemorrhagic necroses with sinusoidal congestion or spotty bleeding, as well as increased AI. Hyperammonemia-induced liver injury rats showed elevated levels of ALT and BA as early as 6 hrs after model establishment. Similar to the ALF rats, AFP and GGT were unaffected and AI increased. However, in contrast to the ALF rats, the liver tissues of the hyperammonemia-induced liver injury rats showed no signs of hepatocyte swelling, necrosis, or inflammatory cell invasion.</p><p><b>CONCLUSION</b>ALF rats and hyperammonemia-induced liver injury rats have elevated BA and marked hepatocyte necrosis. Given that reducing the level of ammonemia can improve the animal's biochemistry indexes, it is likely that hyperammonemia plays a role in acute liver injury or ALF consequent to repeated injury. The pathogenic mechanisms of repeated injury may involve promotion of hepatocyte apoptosis in conjunction with inhibition of cellular regeneration.</p>

Influence of humic acid fertilizer on biomass accumulation and quality of Angelica sinensis / 中国中药杂志

<p><b>OBJECTIVE</b>To study the influence of humic acid fertilizer on plant growth, assimilation base, dried biomass accumulation, yield, quality and disease infection of Angelica sinensis.</p><p><b>METHOD</b>Three kinds of humic acid fertilizer and an amino acid liquid fertilizer were tested in randomized groups at 1 level with 3 times repeat.</p><p><b>RESULT</b>T1 promoted plant and root growth effectively, increased dried biomass accumulation and fresh root average weight remarkably, the yield was increased, the content of ethanol extract was increased by 11.31%. T3 promoted plant and root growth quickly, enlarged leaves area and increased dried plant weight, but effect lasted shortly, the content of ethanol extract was increased by 5.23%. T4 increased more leaves in late growth period, enlarged leaves area, the yield was increased, the content of ethanol extract was increased by 3.09%. T2 increased fresh root average weight remarkably, the yield was increased.</p><p><b>CONCLUSION</b>Humic acid fertilizer and amino acid liquid fertilizer could effectively promote plant growth, enlarge leaves area, promote dried biomass accumulation and transformation to root and increase yield and content of ethanol extract effectively.</p>

Ethnic differences in body mass index and prevalence of obesity in school children of Urumqi City, Xinjiang, China / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To investigate the prevalence of obesity and distribution of body mass index (BMI) in school children of four ethnic groups in Urumqi, Xinjiang, China.</p><p><b>METHODS</b>A total of 55508 school children of Han, Hui, Uygur and Kazak nationalities aged 8-18 years were selected by a cluster sampling from a districts of Urumqi City for anthropometric measurement and demographic survey. Prevalence of obesity and overweight and distribution of body mass index (BMI) by gender, age, and nationality were analyzed and compared. Cutoff points of BMI for defining obesity and overweight were based on the proposal set by the Working Group on Obesity in China (WGOC) to assess age-, gender- and nationality-specific prevalence of obesity and overweight.</p><p><b>RESULTS</b>Prevalence of obesity was 5.34%, 6.78%, 3.39 %, and 1.22% for boys and 2.61%, 1.83%, 1.78%, and 1.40% for girls of Han, Hui, Uygur and Kazak nationalities, respectively. Prevalence of obesity tended to decrease with age overall, whereas that of overweight increased with age in Han children.</p><p><b>CONCLUSIONS</b>Prevalence of obesity in school children in Urumqi varies with their nationalities and is lower than that of an average national level and a level of western countries. Obesity is more prevalent in boys than in girls of Urmuqi overall, which is just the opposite in Kazak children. Han boys and Hui girls have the highest prevalence of obesity and Kazak boys and girls have the lowest ones. Prevalence of obesity decreases with age, but that of overweight shows a different trend.</p>