Objective·To analyze the clinical characteristics of decompensated cirrhosis patients with intestinal obstruction and related risk factors.Methods·Clinical data of 1 783 decompensated cirrhosis patients treated between March 2010 and March 2016 were collected.Of them,128 (7.18％) patients with intestinal obstruction were screened as the observation group and 128 patients without intestinal obstruction were randomly selected as the control group.Clinical data of two groups were retrospectively investigated,clinical characteristics were compared and analyzed,and related risk factors were analyzed with the Logistic regression analysis.Results·The clinical symptoms of decompensated cirrhosis patients with intestinal obstruction were hidden and misdiagnoses or delayed diagnoses were common.The incidences of abdominal pain,abdominal distension,vomiting,stop exhaust defecate,ascites,electrolyte disorders,fever,and spontaneous peritonitis were significantly higher in the observation group than in the control group (P ＜ 0.05).The results of univariate analysis showed that age,history of abdominal surgery,white blood cell count,serum sodium,serum potassium,neutrophil percentage,and serum albumin were risk factors for decompensated cirrhosis patients with intestinal obstruction.The results of multivariate analysis indicated that age,history of abdominal surgery,white blood cell count,serum sodium,serum potassium,neutrophil percentage,and serum albumin were independent risk factors for decompensated cirrhosis patients with intestinal obstruction.Conclusion·Decompensated cirrhosis patients with age ≥ 50 years old,a history of abdominal surgery,the abdominal cavity infection,low potassium,hyponatremia,and lower serum albumin are likely to develop the intestinal obstruction.

This study was aimed to develop a simultaneous determination of zinc and cadmium with carbon fiber electrode by linear sweep stripping voltammetry. Effects of analytical base solution, accumulation potential, ac-cumulation time and scanning velocity were also investigated on the determination. The results showed that in 1 mol·L-1 H2SO4 medium solution, zinc and cadmium had good electrochemical response on the carbon fiber electrode and appeared sensitive anodic stripping peaks at-0.97 V and-0.77 V, respectively. The anodic stripping peak cur-rents and concentrations of zinc and cadmium showed good linear relationships, with correlation coefficients R2 of 0.996 5 and 0.995 4, respectively. The detection limits of zinc and cadmium (S/N=3) were 1.5×10-9 mol·L-1 and 1.0×10-10 mol·L-1, respectively. The average recoveries of zinc and cadmium were 98.9%and 98.1%with the rela-tive standard deviations (RSD) of 2.72%and 2.45%(n=6), respectively. It was concluded that the method of simul-taneous determination of zinc and cadmium with carbon fiber electrode was simple, sensitive and accurate.

According to the results of quantum chemistry calculation and the present research status in the relationship between the structures and the functions of DT, the E154 in DT catalyzing domain was mutated to aspartic acid and arginine in order to study the effects of the alteration on the biological activities. By means of gene site-direct mutation, two mutated genes were prepared and the high performance expression was obtained in E.coli system. The results of toxcity studies indicated that the acute toxicity in guinea pig and cytotoxicities of mutant E154D increased slightly in compared with those of recombination wild toxin, and contrarily, those of E154R decreased obviously.

Objective To assess the characteristic of normal tension glaucoma (NTG) patients with mild cogni?tive impairment (MCI). Methods This study included twenty-six cases of normal tension glaucoma patients who were diagnosed at ophthalmology department of Peking University Third Hospital. All the participants were examined by us?ing the scales of Montreal Cognitive Assessment (MoCA), mini-mental state examination(MMSE), clinical dementia rat?ing (CDR), activities of daily living (ADL), Hamilton anxiety scale (HAMA), Hamilton depression scale (HAMD), Pitts?burgh Sleep Quality Index (PSQI) and polysomnography (PSG). The patients were then divided into Group with MCI (16 cases) and Group without MCI (19 cases). Results There was no difference between the two groups in gender, age, edu?cation, depression, anxiety and body mass index (BMI) (P>0.05), but significant difference in MoCA scores (P<0.05). The incidence rate of sleep disorder of PSQI in was 28.6%(10/35 patients) of total NTG patients, 43.8%(7/16 patients) in Group with MCI, and 15.8% (3/19 patients) in Group without MCI, respectively. The PSQI score was higher in Group with MCI than in Group without MCI (P<0.05). Sleep efficiency was higher in Group without MCI than in Group with MCI (P<0.05), but no difference was found between the two groups in six other indexes of PSQI (P>0.05). The in?cidence rate of sleep structure disorder of PSG in all the NTG patients was 85.7%(30/35 patients), 87.5%(14/16 pa?tients) in Group with MCI, and 84.2%(16/19 patients) in Group without MCI. Sleep time of NREM-N3 was significant?ly shorter in Group with MCI than in Group without MCI (P<0.05), but no difference was found between those groups in total sleep time, sleep efficiency, sleep latency and REM time (P>0.05). Conclusion NTG patients with mild cogni?tive impairment are more prone to sleep disorders, especially sleep structure disturbance and short NREM-N3 time may affect cognitive function.

Vampire bat saliva contains a plasminogen activator that presumably assists these hematophagous animals during feeding. Bat-PA (H), the full-length form of Vampire Bat Salivary Plasminogen Activator (DSPAalpha1), is homologous and similar efficacy to tissue-type plasminogen activator (t-PA). The strict fibrin dependence of activity is a characteristic which could be desirable in the fibrinolytic therapy. It is a unique fibrinolytic enzyme that does not promote neurodegeneration. In this study, according to the reported gene sequence (GenBank Accession No. J05082) of Vampire bat (D. rotundus) plasminogen activator. It was the first time to synthesize the full sequence of DSPAalpha1 in vitro and clone it into the expression vector pPIC9K, the recombinant plasmid was linearized and transformed into Pichia pastoris GS115 strain. Secreted expression of recombinant DSPAalpha1 was attained by methanol induction and its molecular mass is 47 kD. To get recombinant GS115 with high amount of protein, hundreds of His+ transformants had been screened to isolate clones resistant to high levels G418 (2-4 mg/mL), the selected clones mini-expressed in Pichia pastoris, and tested their fibrinolytic activities and expressed protein bands by fibrin plate assay and SDS-PAGE. DSPAalpha1 was determined by optical density after SDS-PAGE, the yield is about 30 mg per liter of fermentation culture. DSPAalpha1 derived often from mammalian cells: Chinese hamster ovary (CHO) cells, Baby hamster kidney (BHK) cells, COS cells, which might be produced at high cost. In Pichia pastoris, it is expected to higher yield and lower cost, thus it might be able to serve as new thrombolytic candidate.
Animals ; Base Sequence ; Chiroptera ; genetics ; Genetic Vectors ; genetics ; Molecular Sequence Data ; Pichia ; genetics ; metabolism ; Plasminogen Activators ; biosynthesis ; genetics ; Recombinant Proteins ; biosynthesis ; genetics ; Recombination, Genetic ; Sequence Analysis, DNA

The phosphatase and tensin homolog deleted on chromosome ten (PTEN) is a common oncogene located in the 10q23.3 region on the long arm of human chromosome l0, which regulates a variety of biological processes such as proliferation, survival, cell structure, motility, energy metabolism and genomic stability. Inactivation of PTEN is prevalent in almost all malignancies and correlates with tumor progression. Thyroid malignancies are among the most common endocrine malignancies, and PTEN has been shown to be critically associated with their development. The aim of this review is to describe the structural function of PTEN, as well as to summarize and discuss the recent findings of PTEN in thyroid malignancies.

Objective To explore the fall prevention bundle management strategy among tumour inpatients and to evaluate its application effects.Methods Data of 139 tumour patients with fall events in Cancer Center of Guangzhou Medical University between 2014 to 2016 was analyzed based on data analysis.The root cause analysis (RCA) and Plato management tool was used to find the primary cause.We built a fall prevention bundle management team,revised the fall scale,established prevention programs for grading nursing,information setting as well as quality monitoring for implementation process to form bundle management strategy.The fall incidence before and after the implement of the bundle strategy was compared.Results After implementing fall prevention bundle management strategy,the incidence of fall decreased from 0.185‰ (2016) to 0.107‰ (2017) with a significant difference (P=0.004).Conclusions Fall prevention bundle management strategy based on data analysis can effectively reduce the incidence of fall to guarantee patient safety.

Objective To investigate the self-care and its influencing factors in chemotherapy patients with PICC. Methods A total of 88 chemotherapy patients with PICC were recruited by convenience sampling from October 2013 to January 2014 in two cancer specialty hospitals in Guangzhou. Patients were investigated by the general situation questionnaire, exercise of self-care agency scale ( ESCA) , the degree of adverse reactions to chemotherapy questionnaire, the questionnaire of PICC self-care knowledge and profile of mood state-short form ( POMS-SF) . Results A total of 80 valid questionnaires were collected finally. The total score of self-care agency among chemotherapy patients with PICC was (118. 79 ± 20. 85), and 58. 8% patients were at advanced level. The score of dimension of “self-concept” (26. 28 ± 4. 90) was the highest while “health knowledge”(39. 90 ± 7. 65) was the lowest. Multiple regression analysis showed that chemotherapy regimen, emotional state, the self-care knowledge of PICC, family relationships, education level were the main influencing factors in patients′self-care (P<0. 05), and the variation which can be explained by the five independent variables accounted for 54. 5%. Conclusions Though the self-care of the chemotherapy patients with PICC is at advanced level, the patients′ health knowledge should be improved. Nursing staff should adopt individual nursing according to patients′ personal characteristics along with paying more attention to the adjustment of patients′mental state and improving of knowledge related to PICC in the clinical work.

Objective:To investigate the effects of neonatal respiratory distress syndrome(NRDS)on thymus of premature infants.Methods:We collected baseline data from premature infants with gestational age of 28~32 weeks in neonatal intensive care unit of Union Hospital, Tongji Medical College, Huazhong University of Science and Technology from January 1, 2019 to December 31, 2019.The largest transverse diameter and the sagittal of thymus were measured by ultrasonography within 24 h of birth, then, the thymic index(TI)and thymic weight index(TWI)were calculated to assess the size of thymus.The preterm neonates were divided into NRDS group and non-NRDS group according to the diagnosic criteria of NRDS, and the two groups were then divided into antenatal corticosteroid administration(ACS)group and non-ACS group according to ACS exposure.We then compared the TI and TWI between these groups.Results:One hundred and sixty-three preterm neonates were enrolled in our study, including 98 NRDS preterm neonates and 65 non NRDS preterm neonates.After matching gestational age and birth weight of the preterm neonates from two groups, 65 preterm neonates with NRDS comprised the NRDS group, and 65 preterm neonates without NRDS served as controls.Preterm neonates in NRDS group had significantly smaller TI[(1.788 ± 0.803)cm 3 vs.(2.420±1.068)cm 3, t=3.818, P<0.01] and TWI[(1.278 ± 0.380)cm 3/kg vs.(1.695 ± 0.491)cm 3/kg, t=5.401, P<0.01] than those in non-NRDS group.Besides, preterm neonates in NRDS group had smaller lymphocytes count[(3.729 ± 1.263)×10 9/L vs.(4.437 ± 1.608)×10 9/L, t=2.789, P<0.01] than that in non-NRDS group.For NRDS preterm neonates, TI[(1.487 ± 0.515)cm 3 vs(2.185 ± 0.942)cm 3, t=3.542, P<0.01] ]and TWI[(1.134± 0.311)cm 3/kg vs(1.469± 0.385)cm 3/kg, t=3.882, P<0.01] in ACS group were significantly smaller than those in non-ACS group.For non-NRDS preterm neonates, TI and TWI in ACS group also were significantly smaller than those in non-ACS group( t=2.676、3.659, P<0.05). Conclusion:NRDS is associated with thymic involution of preterm neonates, and ACS exposure affected the size of thymic in premature infants.

Objective: To explore the life quality of decompensated cirrhosis complicated with intestinal obstruction patients and analyze its influencing factors, and provide basis for clinical intervention. Methods: In Affiliated People′s Hospital of Hubei University of Medicine, a retrospective collection of 39 patients with decompensated cirrhosis complicated with intestinal obstruction from August 2018 to August 2019 were included in the observation group, including 25 males and 14 females, aged (52.34±2.64) years old, ranging from 39 to 64 years old. A total of 42 patients with decompensated cirrhosis not complicated with intestinal obstruction were selected as the control group by random number table method in simple random sampling, including 30 males and 12 females, aged (51.34±3.45), ranging from 37 to 68 years old. The patients in the two groups were investigated by using the chronic liver disease patient quality of life scale- chronic liver disease questionnaire. The abdominal symptoms, fatigue, systemic symptoms, activity, emotion, anxiety, and the total score of quality of life of the patients in the two groups were compared, and the influencing factors were analyzed. Among them, measurement data of normal distribution were expressed as (Mean±SD), and comparison between groups was evaluated by t test; Comparison of count data was evaluated by chi- square test. Factors affecting quality of life were analyzed by multiple linear regression. Results: The scores of abdominal symptoms, fatigue, systemic symptoms, activity, emotion, anxiety and the total score of the observation group were (5.58±1.79), (4.23±1.74), (4.93±1.39), (5.36±1.36), (4.74±1.05), (4.26±1.25), (31.06±6.53), respectively. The scores of the control group were(6.27±1.12), (5.47±1.26), (6.14±0.78), (5.88±0.93), (5.45±0.82), (4.96±0.94), (33.79±4.01), respectively. The difference between the two groups was statistically significant (P< 0.05). Multiple linear regression results showed that disease course, child-pugh classification of liver function, discomfort symptoms such as abdominal pain, abdominal distension and fatigue, nutrition status, gender, age, medical expenses payment method, family per capita monthly income and anxiety were influencing factors. Conclusions Decompensated cirrhosis complicated with intestinal obstruction patients life quality is lower than decompensated cirrhosis not complicated with intestinal obstruction patients, and the influencing factors include disease-related factors and non-disease-related factors. Medical staff should give patients corresponding intervention according to their conditions to improve the quality of life of patients as much as possible.