Objective: To investigate the effects of Shengmai drink(生脉饮) on nitric oxide(NO) and inducible nitric oxide synthase(iNOS) in rats with acute lung injury(ALI) induced by lipopolysaccharide(LPS).Methods: The male Wistar rats were randomly divided into four groups: control group,ALI group,Shengmai drink group and dexamethasone group.LPS was injected into the sublingual vein of rats to prepare ALI models.Macroscopic and histopathological examinations were performed and biological indexes including lung wet weight/dry weight,the ratio of neutrophils and protein content in the bronchoalveolar lavage fluid((BALF),) pulmonary vascular permeability and pulmonary alveolar permeability index were detected.(Meanwhile),the activities of serum NO and lung tissue homogenate iNOS were measured.Results: Lung histopathological examination showed the injury and cellular infiltration in the pulmonary stroma and alveoli were more prominent in the ALI group than that in the control group.Lung wet weight/dry weight,the(ratio) of neutrophils and protein content in BALF,pulmonary alveolar(permeability) index,pulmonary vascular(permeability) were significantly increased,NO and iNOS were also markedly elevated in the ALI group((P

AIM: To approach the relationship between the expression of intercellular adhesion (ICAM-1 mRNA) and acute lung injury (ALI) as well as the mechanisms of rhubarb in the prevention and treatment of the lung injury. METHODS: ALI animal model was performed by Lipopolysaccharide (LPS). The rats were divided into 4 groups: LPS group, control group, rhubarb+LPS group and dexamethasone+LPS group. Histopathological examination and biological markers were measured for the lung specimens. Molecular hybridization method was used to determine the expression of ICAM-1 mRNA. RESULTS: The ICAM-1 mRNA expression in the lung tissues of LPS group significantly increased compared with control group ( P

AIM:To study the inhibitory effect and its mechanisms of the extract of Oratosquilla oratoria (EOS) on the activity of telomerase in human nasopharyngeal carcinoma cell line CNE-2Z. METHODS:MTT assay was used to determine the effect of different doses of EOS on the proliferation of CNE -2Z cells. The activity of telomerase was analyzed by TRAP-ELISA. The mRNA expression of hTERT was determined by RT-PCR,and the protein expression of c-Myc was detected by Western blotting. RESULTS:EOS inhibited the proliferation of CNE-2Z cells in a dose-dependent manner (P

According to teaching practice,the authors discuss the problems on teaching exploratory experiment of experimental physiology sciences and propose some reflection and suggestions.

Objective:To investigate the dietary iodine intake of people in different areas of Qinghai Province, and to provide the basis for scientific iodine supplementation and continuous elimination of iodine deficiency hazards.Methods:From 2018 to 2019, according to administrative division, natural geographical regions, population distribution and economic development level of Qinghai Province, a total of 14 survey sites were selected. One village was selected from each survey site, and 20 households were selected from each village, the salt samples and 24 h urine samples of all family members were collected to detect salt iodine and urinary iodine. One drinking water sample was collected at the five directions of east, west, south, north and middle of each village to detect water iodine. Salt iodine was detected by direct titration, urinary iodine and water iodine were detected by arsenic-cerium catalytic spectrophotometry. At the same time, the 3-day weighing method was used to investigate the diet, the daily dietary iodine intake per capita (the result was expressed as average) and the proportion of dietary iodine in urinary iodine were calculated, the daily dietary iodine intake per capita of different production modes (agricultural region and pastoral region), different geographical environment (Hehuang Valley, Qaidam Basin, Qilian Mountain and Qingnan Plateau), different nationalities (Han, Tibetan, Hui, Mongolian, Tu, Salar) and different economic levels (< 8 000, 8 000 -, 10 000 -, ≥12 000 Yuan) were compared.Results:A total of 999 people from 280 families were surveyed, including 511 males and 488 females. The median water iodine of each survey site was less than 10 μg/L, all of which were environmentally iodine-deficient areas. A total of 280 salt samples were collected, the median salt iodine was 26.0 mg/kg, and the consumption rate of qualified iodized salt was 100% (280/280). A total of 999 urine samples were tested, and the median urinary iodine of people was 192.5 μg/L, which was at an appropriate level of iodine. There was no statistically significant difference ( t =-1.599, P > 0.05) in the daily dietary iodine intake per capita (28.53, 33.44 μg) of people in agricultural region ( n = 643) and pastoral region ( n = 356). The daily dietary iodine intake per capita (25.38, 33.30, 32.98, 34.79 μg) of people in Hehuang Valley ( n = 448), Qaidam Basin ( n = 125), Qilian Mountain ( n = 157), and Qingnan Plateau ( n = 269) were compared, the difference was statistically significant ( F = 2.883, P < 0.05); among them, the daily dietary iodine intake per capita in Hehuang Valley was lower than that in Qingnan Plateau ( P < 0.05). The daily dietary iodine intake per capita of different nationalities were compared, the difference was statistically significant ( F = 3.647, P < 0.05), Salar ( n = 68) and Tibetan ( n = 239) were higher (37.21 and 32.21 μg). The daily dietary iodine intake per capita (38.97, 17.01, 30.86, 33.14 μg) of annual per capita disposable income < 8 000 ( n = 194), 8 000-( n = 221), 10 000-( n = 302), ≥12 000 Yuan ( n = 282) were compared, the difference was statistically significant ( F = 9.407, P < 0.05). The proportions of dietary iodine in urinary iodine of various population ranged from 5.35% to 15.54%. Conclusions:The iodine nutrition of people in Qinghai Province is suitable, the dietary iodine intake of people is closely related to geographical environment, nationality and economic level. But the proportion of dietary iodine in urinary iodine is relatively low, the consumption of iodized salt is still the main way for people to intake iodine, and it is also the main measure to continuously eliminate the harm of iodine deficiency in Qinghai Province.

Objective To understand the pathway of iodine intaking among Tibetan, and provide basic data for prevention and control of iodine deficiency disorders (IDD). Methods Through the method of random sampling, the boarding and day student aged 8 - 10 and women of childbearing age were conducted dietary survey to understand the condition of food intaking via the 24 h review method in 2015. Samples of urine, drinking water, dried beef, milk, Qula and fried noodles were collected and tested iodine level. Results Due to taking iodized salt three times a day with meals, the median of urinary iodine among 492 investigated boarding students was 179.2 μg/L;differently, the median of urinary iodine among 298 day students in this investigation was 79.6 μg/L who taking iodized salt only at lunch at school;and in the study, the median of urinary iodine among 158 women of childbearing age who took iodine-free salt daily was 33.7 μg/L. The iodine contents in 51 drinking water samples, 66 dried beef samples, 48 milk samples, 20 Qula samples and 37 fried noodle samples were quantified respectively, and the average iodine contents of each food were 0.8 μg/L in drinking water, 59.1 μg/kg in dried beef, 61.5 μg/kg in milk, 226.4 μg/kg in Qula and 17.0 μg/kg in fried noodles. The acceptable daily intake (ADI) of iodine of the boarding and day students aged from 8 to 10 and women of child bearing age were 234.0, 126.4 and 76.7 μg/d, respectively, among which the ADI of iodine with iodized salt were 208.0, 78.0 and 0.0 μg/d. Conclusion Consuming iodized salt is a main method to get iodine among Tibetans in Nangqian County, so that it is significant to carried out this measure for a long time for free to let them have iodized salt every day instead of iodine-free one.

Objective:To seek any correlation between and prognosis and hospitalization costs of stroke survivors with dysphagia.Methods:The records of 1370 stroke survivors admitted to the rehabilitation departments of 3 public hospitals in Weifang were studied. Of them, 499 (36.4%) were diagnosed with dysphagia and 871 were not. Binary logistic regression and multiple linear regression were employed to analyze the correlation between dysphagia and the occurrence of pneumonia, modified Rankin Scale (mRS) scores, modified Barthel index (MBI) scores, length of stay and total hospitalization cost.Results:After adjusting for confounding factors, the risk of pneumonia in the dysphagia group was 2.4 times higher. At discharge, the risk of an mRS≥3 was 3.3 times greater and that of an MBI score <60 was 1.7 times greater with dysphagia. Multiple stepwise linear regression showed that dysphagia was significantly associated with higher mRS scores at discharge, lower MBI scores, and longer hospital stays. The standardized regression coefficients predict that after the length of stay, dysphagia is the strongest predictor of the cost of hospitalisation, followed by ADL ability, pneumonia, supratentorial, haemorrhagic stroke and CCI.Conclusions:Dysphagia is a significant predictor of the hospitalization costs of stroke patients. It is recommended to identify and treat dysphagia as early as possible to improve the prognosis of such patients and reduce the economic burden.

A bromoperoxidase from Gracilaria lemaneiformis was purified to homogeneity using a multi-step process of ammonium sulfate precipitation (AS), dialysis, and DEAE-cellulose 52 anion exchange chromatography. The bromoperoxidase activity was unstable or undetectable in crude extract solution. However, it became stable with electrophoretic purity after this multiple purification process. The anion exchange chromatography purification was a critical step in the purification process, which effectively eliminated the phycobiliprotein and smucilaginous polysaccharides. The purified bromoperoxidase was a monomeric enzyme with the relative molecular masses of 66 kD as determined by denaturing and native gradient gel electrophoresis. The optimal pH for bromoination was 6.0 and bromoperoxidase activity was stable as stored at a broad pH range of 3.0-9.0. Of a range of compounds tested, only vanadium enhanced bromoperoxidase activity. Kinetic studies for the bromination of monochlorodimedone (MCD) showed that the Km values of Br- and H2O2 are 53.5 micromol/L, 38 micromol/L respectively.
Chromatography, Ion Exchange ; methods ; Enzyme Stability ; Gracilaria ; enzymology ; Hydrogen-Ion Concentration ; Kinetics ; Peroxidases ; isolation & purification ; metabolism

Objective To investigate the relationship between thyroid volume and multiple body indexes such as urinary iodine level,height,and weight,respectively,in order to provide a theoretical basis for evaluation of goiter disease in the future. Methods The height and weight were measured, and urine samples were collected from children aged 8 to 10 years old from 10 township schools of Nangqian County in Qinghai Province in 2014 and urinary iodine was tested via the As (Ⅲ)-Ce4+catalytic spectrophotometry method. Meanwhile, the thyroid volume was immediately measured via the B-ultrasound method. Statistical analyses were employed finally to assess the difference and correlation between thyroid volume and multiple physiological indexes including urinary iodine level, height, weight, gender and age. Results The thyroid volume of 773 children aged 8 to 10 years old showed skewed distribution (W = 0.088, P < 0.05), with median of 3.53 ml and quartile of 3.05, 4.15 ml. The thyroid volume was not significantly different between different urinary iodine levels (H = 1.644, P > 0.05). There were significant differences of the thyroid volume among different height groups, weight groups and age groups (H=59.845,64.888,28.590,P<0.05),and the thyroid volume was positively correlated with height weight and age,respectively(r = 0.389, 0.359, 0.155, P < 0.05). Conclusions The thyroid volume is related to the level of children's physiological parameters, such as age, height, weight. Therefore, the diagnosis of thyroid volume via the B-ultrasound method for a individual child should not only take age,but also height and weight into account, to reduce the diagnostic error of goiter disease.

Objective:To analyze the assessment results of the external quality control in iodine deficiency disorders laboratories at all levels in Qinghai Province so as to provide quality assurance for monitoring and control effect evaluation of iodine deficiency disorders.Methods:The results of urinary iodine, salt iodine, and water iodine quality control assessments at the provincial, city (state) and county-level iodine deficiency disorders laboratories were analyzed in Qinghai Province from 2013 to 2018 (sourced from the annual evaluation results issued by National Reference Laboratory for Iodine Deficiency Disorders). Among them, there were 1 provincial, 8 city (state) and 43 county-level (2017, 2018) laboratories participated in the urinary iodine assessment; 1 provincial, 8 city (state) and 30 county-level (43 in 2017 and 2018) laboratories participated in the salt iodine assessment; 1 provincial and 8 city (state)-level laboratories participated in the water iodine assessment.Results:From 2013 to 2018, the feedback rates and qualified rates of provincial and city (state)-level laboratories participated in the urinary iodine external quality control assessment were 100.0%; the feedback rates of 43 county-level laboratories (2017 and 2018) were 100.0%, and the qualified rates were 93.0%(40/43) and 88.4%(38/43), respectively. The feedback rates and qualified rates for salt iodine assessment in provincial and city (state)-level laboratories were 100.0%; the county-level laboratories feedback rates were 100.0%, and the qualified rates were > 90.0% except for 2014. And the feedback rates of provincial and city (state)-level laboratories for water iodine assessment were 100.0%; the qualified rate of provincial-level laboratory was 100.0%, and the city (state)-level laboratories were 100.0% except 2016 (7/8).Conclusions:The quality control network of Qinghai Province's iodine deficiency disorders laboratories has fully covered all city (state) and county-level laboratories. Provincial, city (state)-level laboratories have stable and reliable levels of urinary iodine, salt iodine, and water iodine; some individual county-level laboratories testing capabilities still need to be improved.