To solve separating problem of natural soda, fifty-seven strains screened from soil, floul water and activated mud were of flocculating activity. Two strains of bacteria, which were screened from above mentioned strains have higher activity and better steady than the whole culture liquid of bacteria was observed that its flocculating use to natural soda was strong and the mean flocculating rate of two strains were 79.80% and 87.% respectively.

OBJECTIVETo investigate molding technology of total alkaloids from Sophora alopecuroides freeze-dried powders and observe its inhibition effects on liver transplantation tumor in mice.

METHODWith color, clarity, water-soluble and formability as indexes, single factor tests were adopted to screen type and amount of filler, the concentration of total alkaloids in drug liquid, pH in order to determine optimum prescription of total alkaloids from S. alopecuroides freeze-dried powders, the lowest melting point was determined and freeze drying curve was drafted. Mice hepatoma H22 ascites tumor strain was sterile inoculated in right axillary subcutaneous of mice, and antitumor effect of total alkaloids from S. alopecuroides freeze-dried powders on liver transplantation tumor H22 in mice.

RESULTWhen selected 80 g x L(-1) as mannitol as filler, the concentration of total alkaloids in drug liquid was 25 g x L(-1) and pH 6.5-7.5, freeze-dried effect was optimum with fast reconstitute speed. Average inhibition rate of the big (120 mg x kg(-1)) and medium (60 mg x kg(-1)) dose group of total alkaloids from S. alopecuroides freeze-dried powders on liver transplantation tumor H22 in mice were 56.08% and 35.49%, respectively.

CONCLUSIONPreparation technology was reasonable, reproducible and stable, total alkaloids from S. alopecuroides freeze-dried powders had significant antitumor effect and showed a dose-effect relationship.

Alkaloids ; chemistry ; pharmacology ; Animals ; Antineoplastic Agents, Phytogenic ; chemistry ; pharmacology ; Cell Line, Tumor ; Color ; Freeze Drying ; Humans ; Liver Neoplasms ; drug therapy ; Mice ; Powders ; chemistry ; Sophora ; chemistry ; Tumor Burden ; drug effects

[Summary] According to urinary albumin excretion rates ( UAER) , 256 patients with type 2 diabete mellitus (T2DM) were divided into normal albuminuria (NA), microalbuminuria (MA), and clinical nephropathy (CN) groups while 108 healthy subjects as control group. The analysis of variance of single factor was applied to examine lipoprotein(a), triglyceride, total cholesterol(TC), low-density lipoprotein cholesterol(LDL-C), cystatin C, and homocysteine. The correlations of lipoprotein ( a ) with urinary albumin excretion rate ( UAER ) and glomerular filtration rate ( eGFR ) were analyzed by Pearson correlation analysis. The sensitivities of lipoprotein ( a ) were evaluated in diagnosis of diabetic nephropathy ( DN) by receiver operating characteristic curve. The results showed that lipoprotein ( a) levels in NA, MA, and CN groups were gradually increased, with a significant increase in CN group(P<0. 05). Pearson correlation analysis revealed that lipoprotein (a) was positively correlated with systolic pressure, TC, cystatin C, and UAER(all P<0. 05) and negatively correlated with fasting blood glucose and eGFR (P<0. 05). The area under the ROC curve of lipoprotein(a) was 0. 639, with the sensitivity 66. 4% and specificity 55. 9% in the optimal cutoff value of 8. 41 mg/dl. These results suggest that lipoprotein(a) may serve as an index for monitoring DN based on its better correlation with UAER and eGFR.

Objective: To observe the effect of the (p)ppGpp synthase gene (relA) on the heteroresistance of colistin against Acinetobacter baumannii. Methods: The relA gene in Acinetobacter baumannii ATCC19606 was knocked out by Red homologous recombination technique. The biofilm formation of Acinetobacter baumannii was observed by crystal violet staining. The change of heterogeneous colonies of Acinetobacter baumannii under the action of colistin was detected by population analysis profiles (PAP) and the heterogeneity was calculated. The killing curve was used to detect the formation of persistent bacteria in Acinetobacter baumannii under the action of colistin. Results: The relA gene in Acinetobacter baumannii was successfully knocked out, and the relA knockout strain ATCC19606-ΔrelA was obtained. After relA gene knockout, the biofilm formation of Acinetobacter baumannii decreased significantly. After relA gene knockout, Acinetobacter baumannii significantly reduced the heterogeneous colonies and persistent bacteria formation under the action of colistin. Conclusion: The bacterial stringent reaction (p) ppGpp synthase relA may be an important factor affecting the heteroresistance of Acinetobacter baumannii to colistin.

Objective:To observe the effect of fluid therapy on volume and coagulation function in patients with severe postpartum hemorrhage during cesarean section of placenta accreta under the guidance of inferior vena cava diameter (IVCD) and inferior vena cava collapse index (IVC-CI).Methods:A prospective randomized controlled study was conducted in 60 pregnant women with severe postpartum hemorrhage (blood loss ≥ 1 000 mL) who were hospitalized for delivery or referred for delivery in the Peking University Third Hospital from December 2018 to July 2019. The patients were divided into routine fluid replacement group and goal-oriented fluid resuscitation group (goal-oriented fluid replacement therapy was given) according to the different ways of fluid replacement. The hemodynamics, blood gas analysis, coagulation function, total fluid replacement, urine volume, prognosis, intraoperative vasoactive drugs utilization rate and postoperative adverse events were recorded before skin incision, after the fetus delivered, postpartum hemorrhage and at the end of operation, and the differences of these indices between the two groups were compared.Results:① Hemodynamics: the heart rate (HR) of the two groups were reached the peak during postpartum hemorrhage, but there was no significant difference in HR at each time point between the two groups. The mean arterial pressure (MAP) was decreased at first and then increased in both groups, and reached the trough at postpartum hemorrhage, but the MAP in the goal-oriented fluid resuscitation group was significantly higher than that in the routine fluid replacement group [mmHg (1 mmHg = 0.133 kPa): 75.6±10.7 vs. 69.2±8.9, P < 0.05]. In the goal-oriented fluid resuscitation group, the central venous pressure (CVP) was increased slightly after the fetus delivered and then stabilized, while in the routine fluid replacement group, the CVP was increased at first and then decreased, and reached the peak in postpartum hemorrhage. During postpartum hemorrhage, CVP in the goal-oriented fluid resuscitation group was significantly lower than that in the routine fluid replacement group [cmH 2O (1 cmH 2O = 0.098 kPa): 9.5±3.9 vs. 11.4±3.4, P < 0.05]. ② Arterial blood gas: partial pressure of oxygen (PaO 2) and partial pressure of carbon dioxide (PaCO 2) in arterial blood at the end of operation in both groups were higher than those in postpartum hemorrhage. There was no significant difference in PaO 2 at the end of operation between the goal-oriented fluid resuscitation group and routine fluid replacement group (mmHg: 189.3±100.5 vs. 240.2±126.3, P > 0.05). The PaCO 2 in the goal-oriented fluid resuscitation group was significantly lower than that in the routine fluid replacement group (mmHg: 34.6±4.6 vs. 36.8±4.1, P < 0.05). The lactic acid (Lac) at the end of operation of the goal-oriented fluid resuscitation group was significantly lower than that of the routine fluid replacement group (mmol/L: 2.2±0.6 vs. 2.6±1.1, P < 0.05). ③ Liquidintake and output volume: the total infusion volume, crystal fluid infusion volume and suspended red blood cell infusionvolume in the goal-oriented fluid resuscitation group were significantly less than those in the routine fluid replacement group [total infusion volume (mL): 3 385.9±1 144.1 vs. 4 448.3±1 194.4, crystal infusion volume (mL): 2 635.6±789.7 vs. 3 160.0±860.3, suspended red blood cell input volume (mL): 695.6±366.2 vs. 911.1±284.7, all P < 0.05], and the utilization rate of vasoactive drugs in the goal-oriented fluid resuscitation group was decreased significantly during operation [13.3% (4/30) vs. 60.0% (18/30), P < 0.05]. The amount of bleeding in the goal-oriented fluid resuscitation group was also significantly less than that in the routine fluid replacement group (mL: 1 451.7±373.8 vs. 1 725.9±372.8, P < 0.05), but there was no significant difference in urine volume between the goal-oriented fluid resuscitation group and the routine fluid replacement group (mL: 369.0±262.7 vs. 485.0±286.8, P > 0.05). ④ Coagulation function: at the end of operation, the prothrombin time (PT) in the goal-oriented fluid resuscitation group was significantly shorter than that in the routine fluid replacement group (s: 10.9±0.6 vs. 11.2±0.6), and the fibrinogen (Fib) in the goal-oriented fluid resuscitation group was significantly higher than that in the routine fluid replacement group (g/L: 3.7±0.5 vs. 2.9±0.8), and the differences were statistically significant (both P < 0.05).⑤ Prognostic index: compared withthe routine fluid replacement group, the proportion of patients transferred to intensive care unit (ICU) at the end of operation in the goal-oriented fluid resuscitation group was significantly lower [16.7% (5/30) vs. 66.7% (20/30), P < 0.05], and ICU length-of-stay was significantly shorter [hours: 0 (0, 24) vs. 24 (0, 24), P < 0.05], but there was no significant difference in the incidence of disseminated intravascular coagulation (DIC), acute renal injury (AKI) or hysterectomy between the goal-oriented fluid resuscitation group and the routine fluid replacement group [the incidence of DIC: 0% (0/30) vs. 6.7% (2/30), the incidence of AKI: 0% (0/30) vs. 3.3% (1/30), the hysterectomy rate: 10.0% (3/30) vs. 26.7% (8/30), all P > 0.05]. Conclusion:Fluid resuscitation guided by IVC-CI can effectively reduce the volume of blood and fluid transfusion and blood loss in patients with severe postpartum hemorrhage and improve their blood coagulation function.

OBJECTIVETo evaluate the protective effect of licoflavone on gastric mucosa in rats with chronic superficial gastritis and explore the possible mechanism.

METHODSSD rat models of chronic superficial gastritis was established by intragastric administration of 0.02% ammonia and long-term irregular diet. The rat models were then randomized into model group, vitacoenzyme group and 3 licoflavone groups of high, medium, and low doses. After 30 days of treatment, the gastric histopathology, mucosal lesions, scanning electron microscopy, mucin function production by the gastric mucosa epithelial cells, serum PGE(2) level and gastric microcirculation were assessed to evaluate the protective effect of licoflavone on gastric mucosa.

RESULTSCompared with normal control rats, the rat models of chronic superficial gastritis showed significantly higher gastric mucosal injury rate, histopathological scores and gastric mucin content. Licoflavone significantly ameliorated gastric pathology and increased serum PGE(2) level, enhanced acidic mucin secretion by the epithelial cells, and improved gastric microcirculation in the rat models.

CONCLUSIONLicoflavone feeding suppresses gastric mucosa injury, protects and restores the injured mucosa in rats with chronic superficial gastritis, and these effects are related with the up-regulation of serum PGE(2) level.

Animals ; Chronic Disease ; Dinoprostone ; blood ; Epithelial Cells ; secretion ; Female ; Flavones ; pharmacology ; Gastric Mucosa ; drug effects ; pathology ; Gastritis ; pathology ; Male ; Microcirculation ; Mucins ; secretion ; Rats ; Rats, Sprague-Dawley

To explore the effect and mechanism of Guhong injection against cerebral ischemia reperfusion injury, SD rats were randomly divided into the sham-operated group, the model group, the nimodipine group, and high, medium and low-dose Guhong injection groups, with 10 rats in each group. The middle cerebral artery embolization (MCAO) model was established to observe neurological deficit symptoms, infarct volume, SOD activity, MDA content, GSH-Px and CAT activity in rats, as well as the contents of t-PA, PAI, TXB2 and 6-keto-PGF1α in serum. The results showed that Guhong injection could obviously promote the recovery of neurological deficit symptoms, narrow the brain infarct volume in rats after surgery, significantlyincrease the activities of SOD, GSH-Px and CAT and decrease the content of MDA. Meanwhile, it also could obviously increase the contents of t-PA and 6-keto-PGF1α and decrease the contents of PAI and TXB2 in serum, indicating that Guhong injection have better antioxidant and antithrombus effects, as well as a significant protective effect against cerebral ischemia reperfusion injury in rats.
Animals ; Antioxidants ; pharmacology ; Brain Ischemia ; drug therapy ; Catalase ; metabolism ; Drugs, Chinese Herbal ; pharmacology ; Injections ; Male ; Malondialdehyde ; metabolism ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; drug therapy ; Superoxide Dismutase ; metabolism

Objective To explore the present condition of endemic arsenism, the implementation of control measures and the effect of the monitored county (Tongyu County) and the monitoring spot (Baiyintuhai Village) in 2006 and 2007. Methods According to the National Survey Scheme of Endemic Arsenism, the progress of anti-arsenic water in Tongyu, and the management and running of all engineering projects and the arsenic content in water were surveyed. The patients with endemic arsenism in Tongyu were generally surveyed. The arsenic content of the improved drinking water in Tongyu and the arsenic in urine of children aged 8-12 and adults over 18 years of age were determinted. The causes of resident death in the monitoring spot from the year of 2006 and 2007 were investigated. Arsenic content of drinking water and the urine of local residents was examined with "Model AFS-930 Double-Channel Atomic Fluorescence Spectrometer". Results There were 30 endemic arsenism areas, 157 areas with high arsenic content and all population of 57 576 in Tongyu. Six areas had improved water till 2006, where 20.0% of water had improved, and six water-improving projects were all running normally, benefiting a population of 1670. Eight high arsenic areas changed water, in a rate of 5.09%. Eight water-improving projects were functioning well, benefiting a population of 4350. Until 2007, 28 areas had improved water in Tongyu, accounting for 93.33%. These 28 projects were well running, covering a population of 7980. One hundred and fouty-eight high arsenic areas had changed water, reaching a rate of 94.27%. One hundred and fouty-eight projects changedg water were running normally, benefiting a population of 46 214. In the surveyed spots, arsenic content was between 0.004 mg/L and 0.005 mg/L in 2006 and between 0.010 mg/L and 0.021 mg/L in 2007, all in the normal range to the time being. The arsenic contents in urine of the children aged 8-12 in the monitoring spots were determinted, averaging at 0.024 mg/L in 15 samples, fluctuating between 0.005 mg/L and 0.048 mg/L in 2006. The average content in urine from adults was 0.019 mg/L in 53 samples, fluctuating between 0.005 mg/L and 0.087 mg/L in 2007. The arsenic contents in urine were all in the normal range in 2006 and 2007. In 2006 14 endemic arsenism patients, all in light symptoms, had been checked out, the morbidity being 6.19%. In 2007, 17 patients who were all in light symptoms were identified in a rate of 6.94%. There was no significant difference of morbidity between the two years(χ2=0.1059, P>0.05). Two patients died, unrelating with drinking high arsenic water in 2006 and 2007. Conclusions The prevention and control measures are well implemented in Tongyu. The water-improving projects are functioning well. The condition of endemic arsenism is slight and hasn't changed so much in these two years. The arsenic contents in urine of children and adults within the normal range, showing that improving water can control the occurrence and the development of endemic arsenism.

OBJECTIVETo study the genotype distribution of extended-spectrum beta-lactamases (ESBLs) in ESBLs-producing Escherichia coli (E. coli) isolates from posthepatitic cirrhosis' patients with bloodstream infection.

METHODSE. coli were isolated in bloodstream from patients with posthepatitic cirrhosis between January and December in 2011. The strains were identified by VITEK-II. The antibiol susceptibility tests were performed with K-B method. beta-lactamases genes were detected multi-PCR, PCR, sequence and blast.

RESULTSA total of 79 non-duplicate clinical isolates of E coli were consecutively collected from liver cirrhosis' patients with bloodstream infection. There were 20 isolates produced TEM-1 type beta-lactamases and 1 isolate produced SHV-1 typebeta-lactamases. 40 clinical isolates were detected to produce CTX-M type ESBLs, there were 20 CTX-M-1 group and 26 CTX-M-9 group, including 6 stains habouring both CTX-M-1 and CTX-M-9 group. Eight CTX-M genotypes were confirmed by sequencing of the PCR products, including CTX-M-3, CTX-M-14, CTX-M-15, CTX-M-24, CTX-M-28, CTX-M-31, CTX-M-65 and CTX-M-79.

CONCLUSIONCTX-M genotype ESBLs was the most popular extended-spectrum beta-lactamases in E. coli isolated from liver cirrhosis' patients with bloodstream infection. The CTX-M-14 is the dominant epidemic type.

Bacteremia ; microbiology ; Cross Infection ; microbiology ; Drug Resistance, Bacterial ; Escherichia coli ; drug effects ; enzymology ; genetics ; isolation & purification ; Escherichia coli Infections ; microbiology ; Escherichia coli Proteins ; genetics ; Genotype ; Hospitalization ; statistics & numerical data ; Humans ; Liver Cirrhosis ; therapy ; Microbial Sensitivity Tests ; beta-Lactamases ; genetics ; metabolism