Based on the strain breeding theory and metabolic engineering theory, A high-yield mutant of Lactobacillus Thermophilus ATCC8317 was obtained through the compound inducements by the original Acetic acid-Sodium acetate plate and the productivity increased 210%.The best media components included saccharifying corn,malt powder 30g/L,peptone 5g/L.Based on the variety of specific cell growth rate and specific L-lactic acid production rate at different temperatures, the strategy of temperature control was obtained. The total product of L-lactic acid reached 135g/L besides the rate of glucose consumed and the average L-lactic acid productivity were up to 95% and 2.25g/(L?h) respectively.

Thirty-five patients with ketosis-prone diabetes (KPD) and 38 patients with newly-diagonosed common type 2 diabetes mellitus (DM) were treated with insulin for 3 months.The results showed that the existing insulin resistance in patients with KPD was mild as compared with common type 2 DM, and the recovery of insulin sensitivity was less marked in patients with KPD after blood glucose was well controlled.

Herbicides ; poisoning ; Humans ; Paraquat ; poisoning ; Poisoning ; metabolism ; pathology ; therapy

OBJECTIVETo investigate the semen quality and its influencing factors in preconception males in Nanjing area so as to provide some evidence for working out effective intervention measures.

METHODSTotally 687 men receiving preconceptional physical examination were enrolled in this study. A questionnaire survey was conducted among the subjects along with an analysis of their semen quality.

RESULTSThe median of sperm concentration was 63.3 x 10(6)/ml (95% CI [19.88-119] x 10(6)/ml). The median of grade a sperm was 33.03% (95% CI [19.38-55.05]%), that of grade a + b sperm was 52.08% (95% CI [39.53-69.37]%), and that of teratosperm was 91.75% (95% CI [69-100]%). The median concentration of seminal plasma PMN-elastase was 195.55 ng/ml (95% CI [76.16-3330.38] ng/ml) and that of seminal plasma zinc was 7.62 μmol/L (95% CI [1.5-23, 45] μmol/L). The positive rates of Ureaplasma urealyticum (UU), Chlamydia trachomatis (CT), and Gardnerella vaginalis (GV) were 42.4%, 0.3%, and 2.4%, respectively. The median of sperm DNA fragmentation index (DFI) of those whose wives had a history of adverse pregnancy was 20.25% (95% CI [2.15-68.25]%). Multivariate logistic regression analysis suggested that mental stress (OR 1.567, 95% CI [1.081-2.27]) and sedentariness (OR 1.772, 95% CI [1.211-2.592]) were independent risk factors for asthenospermia.

CONCLUSIONThe sperm quality of preconception males in Nanjing area is not encouraging, and it can be improved by changing undesirable lifestyle and reducing mental stress.

Adult ; Asthenozoospermia ; etiology ; China ; Chlamydia trachomatis ; isolation & purification ; DNA Fragmentation ; Gardnerella vaginalis ; isolation & purification ; Humans ; Leukocyte Elastase ; analysis ; Male ; Preconception Care ; Semen ; microbiology ; Semen Analysis ; statistics & numerical data ; Sperm Count ; statistics & numerical data ; Spermatozoa ; Ureaplasma urealyticum ; isolation & purification

T,P=0.008; Genotype:P=0.031)of DISC1 gene were significantly associated with schizophrenia.The haplotypes constructed by these two markers were significantly associated with schizophrenia,such as AT(?2=7.065,P=0.008,OR=1.42,95%CI=1.10~1.83)and GA(?2=6.009,P=0.014,OR=0.80,95%CI=0.68~0.96).When the subjects examined with the positive and negative syndrome scale(PANSS),the risk haplotype AT was not significantly correlated with positive,negative,excitement,depression and cognitive impairment factors of PANSS. Conclusion:These findings provide further evidence for DISC1 as a predisposing gene involved in schizophrenia in the Chinese Han Population.However,no positive association is found between DISC1 polymorphisms with schizophrenia clinical symptoms.

Objective To explore the relationship between the degree of intraplaque neovascularization in carotid artery and the level of serum homocysteine.Methods Contrast-enhanced ultrasound were performed on 72 carotid atherosclerotic plaques of 48 patients.Contrast-enhancement within the plaque was categorizde as grade 1 to grade 3.The level of serum homocysteine were detected in the fasting state during the same period.Results According to the degree of contrast enhancement(grade 1 to 3),patients were divided into 3 groups.The more new vessels in plaque,the higher the level of homocysteine.The levels of homocysteine in three groups increased in turn.There were distinct differences among the three groups(F =18.49,P ＜0.05),and there was significant difference between every two groups (P ＜0.05).The linear correlation analysis showed that the level of homocysteine was positively correlated with the degree of carotid plaque enhancement (r =0.66,P ＜ 0.01).Conclusions Contrastenhanced ultrasonography could semi-quantitate new vessles in plaque.There was positive correlation between the degree of intraplaque neovascularization with the level of serum homocysteine.Combine with the level of serum homocysteine based on intraplaque neovascularization detected by contrast-enhanced ultrasound,the plaque stability could be more accurately evaluated.

OBJECTIVETo investigate the pathogenicity of Leptospira interrogans fliR gene to J774A.1 cells.

METHODSfliR gene from L. interrogans serogroup Icterohaemorrhagiae serovar lai strain 56601 and kana gene from plasmid pET42a were amplified by PCR. Suicide plasmid of fliR gene was constructed; and specific siRNA for fliR gene was designed and synthesized. fliR gene mutants were constructed by gene knock-out with suicide plasmid (56601fliR-Kana) and gene silencing with siRNA (56601siRNA-R2). The mutants were identified by PCR, sequencing and semi-quantitative RT-PCR. Adhesion to mouse mononuclear-macrophage J774A.1 and induction of cell necrosis and apoptosis by 56601fliR-Kana and 56601siRNA-R2 were examined by adhesion test and flow cytometry, respectively.

RESULTThe nucleotide and putative amino acid sequences of cloned fliR gene had 99.9% and 100% similarities to those of reported sequences in GenBank. The nucleotide sequence of the cloned kana gene was identical to the corresponding sequence in pET42a map. The results of PCR and sequencing confirmed that kana gene was inserted in the sequence of 56601fliR-Kana fliR gene. The mRNA level of fliR gene in 56601fliR-Kana was remarkably decreased (P<0.01) while the mRNA level of fliR gene in 56601siRNA-R2 was much lower than that in wild strain 56601 (P<0.05). 56601fliR-Kana and 56601siRNA-R2 lost the ability to adhere J774A.1 cells; and their ability to induce cell necrosis and apoptosis was markedly weakened (P<0.01).

CONCLUSIONfliR is a virulence-associated gene of L. interrogans and the function of the gene is closely related to adhesion, induction of cell necrosis and apoptosis of the microbe.

Animals ; Apoptosis ; Bacterial Adhesion ; Bacterial Proteins ; genetics ; metabolism ; Cell Line ; Leptospira interrogans ; genetics ; pathogenicity ; Macrophages ; microbiology ; pathology ; Membrane Proteins ; genetics ; metabolism ; Mice ; RNA, Messenger ; genetics ; metabolism ; RNA, Small Interfering ; genetics

OBJECTIVE: To explore the effect of ulinastain on the expression of hemeoxy genase-1 (HO-1) in oil acid-induced acute lung injury in rats. METHODS: The animal model of acute lung injury was established by oil acid. Thirty SD rats were randomly divided into 3 groups: the blank control group (A), the acute lung injury group (B) and the acute lung injury group (C) followed by injecting 100 mL/kg ulinastatin. Each group consisted of 10 rats. Group A were given 0.2 mL/kg natural solution through the trial vein; Group B and C were given 0.2 mL/kg oil-acid through trial vein, while group C were injected 100mL/kg ulinastatin by the peritoneal cavity after injecting oil acid. After 4 hours, the rates of respiration were counted and blood samples were cramped out through the heart puncture for blood gas analysis. The expressions of hemeoxygenase-1 and the pathologic construction changes were determined by HE staining in the lower right lung of rats in the 3 groups. RESULTS: The respiration dysfunction caused by oil acid could be prominently improved by ulinastain. There was only a little expression of hemeoxygenase-1 in the lung of Group A, but the expression increased in Group B and significatively increased in Group C. CONCLUSION Ulinastatin may protect the rats from acute lung injury through increasing the expression of HO-1.
Acute Lung Injury ; chemically induced ; metabolism ; Animals ; Glycoproteins ; pharmacology ; Heme Oxygenase (Decyclizing) ; metabolism ; Lung ; drug effects ; metabolism ; Male ; Oleic Acid ; adverse effects ; Rats ; Rats, Sprague-Dawley

BACKGROUNDEmerging evidence suggests that stem cells can be used to improve cardiac function in patients after acute myocardial infarction. In this randomized trial, we aimed to use Doppler tissue tracking and strain imaging to assess left ventricular segmental function after intracoronary transfer of autologous bone-marrow stem cells (BMCs) for 6 months' follow up.

METHODSTwenty patients with acute myocardial infarction and anterior descending coronary artery occlusion proven by angiography were [corrected] randomized into intracoronary injection of bone-marrow cell (treated, n = 9) or diluted serum (control, n = 11) groups. GE vivid 7 and Q-analyze software were used to perform echocardiogram in both groups 1 week, 3 months and 6 months after treatment. Three apical views of tissue Doppler imaging were acquired to measure peak systolic displacement (Ds) and peak systolic strain (epsilonpeak) from 12 segments of LV walls. Left ventricular ejection fraction (LVEF), end-diastolic volume (EDV) and end-systolic volume (ESV) were obtained by Simposon's biplane method.

RESULTS(1) 3 months later, Ds and epsilonpeak over the infract-related region clearly increased in the BMCs group [Ds: (4.49 +/- 2.71) mm vs (7.56 +/- 2.95) mm, P < 0.01; epsilonpeak: (-13.40 +/- 6.00)% vs (-17.06 +/- 6.05)%, P < 0.01], but not in the control group [Ds: (4.74 +/- 2.67) mm vs (5.01 +/- 3.23) mm, P > 0.05; epsilonpeak: (-13.84 +/- 6.05)% vs (-15.04 +/- 6.75)%, P > 0.05]. At the same time, Ds over the normal region also increased, but the Ds enhancement was markedly higher in the BMCs group than that in the control group [(3.21 +/- 3.17) mm vs (0.76 +/- 1.94) mm, P < 0.01]. Parameters remained steady from the 3rd to 6th month in either group (P > 0.05). (2) LVEF in treated and control groups were almost the same at baseline (1st week after PCI) [(53.37 +/- 8.92)% vs (53.51 +/- 5.84)%, P > 0.05]. But 6 months later, LVEF in the BMCs group were clearly higher than that in the control group [(59.33 +/- 12.91)% vs (50.30 +/- 8.30)%, P < 0.05]. (3) There were no evident difference in EDV or ESV between two groups at baseline [EDV: (113.74 +/- 23.24) ml vs (129.94 +/- 32.72) ml, P > 0.05; ESV: (57.12 +/- 18.66) ml vs (62.09 +/- 17.68) ml, P > 0.05]. Three months later, EDV and ESV in the control group were markedly greater than those in the BMCs group [EDV: (154.89 +/- 46.34) ml vs (104.85 +/- 33.21) ml, P < 0.05; ESV: (82.91 +/- 35.79) ml vs (49.54 +/- 23.32) ml, P < 0.05]. But EDV and ESV did not change much from 3rd to 6th month in either group (P > 0.05).

CONCLUSIONSEmergency transplantation of autologous BMCs in patients with acute myocardial infarction helps to improve global and regional contractility and attenuate post-infarction left ventricular remodeling. Tissue tracking and strain imaging provide quick, simple and noninvasive methods for quantifying left ventricular segmental function in humans.

Aged ; Double-Blind Method ; Female ; Hematopoietic Stem Cell Transplantation ; Humans ; Male ; Middle Aged ; Myocardial Infarction ; physiopathology ; therapy ; Transplantation, Autologous ; Ventricular Function, Left ; Ventricular Remodeling

Naringenin (1) was transformed to three metabolites (2-4) by Mucor sp. Based on LCMS(n)-IT-TOF and NMR spectroscopic data, 2-4 were identified as naringenin-7-O-sulphate, naringenin-4'-O-sulphate, and naringenin-5-O-sulphate, respectively. These results might provide hints to the mammalian/human metabolism of naringenin.
Biotransformation ; Drugs, Chinese Herbal ; chemistry ; metabolism ; Flavanones ; chemistry ; metabolism ; Magnetic Resonance Spectroscopy ; Molecular Structure ; Mucor ; metabolism ; Sulfates ; metabolism