By using cup culture, influence of different strains (ammonium-resistant N2-fixing type, wild type, none N2-fixing type) of Klebsiella oxytoca on the growth of rice seedling was compared. It was discovered that ammonium-resistant N2 -fixing bacteria could excrete some plant growth promoting substance, which could be adsorbed by cation resin. It' s activity wouldn't be affected at 80℃. At optimal concentration, the weight of rice root and seedling were increased by

Based on the physiological properties of ammonium-resistant N2-fixingbacterium ( Klebsiella oxytoca NG13/pMC73A), the fermentation technology of it was studied. The basic medium of high-density culture was established, with glucose as carbon source coupled with appropriate nitrogen source and inorganic salts. At the middle and late phase of culture, glucose and ammonia were added to supply carbon source and nitrogen source, stabilizing the pHat 6.5 ~ 6.8. Optimal level of dissolved oxygen was kept by controlling aeration and stirring rate. Bacterium number of Klebsiella oxytoca NG13/pMC73A reached 600 ~ 700 x 10s cfu/mL at the end of culture. Compared with previous technology, bacterium number was increased by more than ten-fold with a comparable culture period.

BACKGROUND: This study aimed to observe the effect of early goal directed therapy (EGDT) on tissue perfusion, microcirculation and tissue oxygenation in patients with septic shock. METHODS: Patients with early septic shock (<24 hours) who had been admitted to the ICU of Zhongda Hospital Affiliated to Southeast University from September 2009 through May 2011 were enrolled (research time: 12 months), and they didn't meet the criteria of EGDT. Patients who had one of the following were excluded: stroke, brain injury, other types of shock, severe heart failure, acute myocardial infarction, age below 18 years, pregnancy, end-stage disease, cardiac arrest, extensive burns, oral bleeding, difficulty in opening the mouth, and the onset of septic shock beyond 24 hours. Patients treated with the standard protocol of EGDT were included. Transcutaneous pressure of oxygen and carbon dioxide (PtcO2, PtcCO2) were monitored and hemodynamic measurements were obtained. Side-stream dark field (SDF) imaging device was applied to obtain sublingual microcirculation. Hemodynamics, tissue oxygen, and sublingual microcirculation were compared before and after EGDT. If the variable meets the normal distribution, Student's t test was applied. Otherwise, Wilcoxon's rank-sum test was used. Correlation between variables was analyzed with Pearson's product-moment correlation coefficient method. RESULTS: Twenty patients were involved, but one patient wasn't analyzed because he didn't meet the EGDT criteria. PtcO2 and PtcCO2 were monitored in 19 patients, of whom sublingual microcirculation was obtained. After EGDT, PtcO2 increased from 62.7±24.0 mmHg to 78.0±30.9 mmHg (P<0.05) and tissue oxygenation index (PtcO2/FiO2) was 110.7±60.4 mmHg before EGDT and 141.6±78.2 mmHg after EGDT (P<0.05). The difference between PtcCO2 and PCO2 decreased significantly after EGDT (P<0.05). The density of perfused small vessels (PPV) and microcirculatory flow index of small vessels (MFI) tended to increase, but there were no significant differences between them (P>0.05). PtcO2, PtcO2/FiO2, and PtcCO2 were not linearly related to central venous saturation, lactate, oxygen delivery, and oxygen consumption (P>0.05). CONCLUSION: Peripheral perfusion was improved after EGDT in patients with septic shock, and it was not exactly reflected by the index of systemic perfusion.

OBJECTIVETo study the effect of acupuncture on the immune function of sepsis patients.

METHODSNinety sepsis patients were assigned to the control group, the thymosin a1 group, and the acupuncture treatment group according to random digit table, 30 patients in each group. Patients in the control group were treated according to the guideline of Surviving Sepsis Campaign (SSC). Patients in the control group received routine treatment. Those in the thymosin alpha1 group additionally received subdermal injection of thymosin alpha1 (1.6 mg), once per day for 6 successive days. Needling at related points such as Zusanli (ST36), Yanglingquan (GB34), Neiguan (PC6), Guanyuan (RN4), and so on, was performed in patients of the acupuncture treatment group, once per day for 6 successive days. T cell subgroups (CD3+, CD4+, CD8+, CD4+ /CD8+) and immunoglobulin levels (IgG, IgA, IgM) were detected. The length of ICU hospital stay, hospital readmission rate, and 28-day mortality were compared among the three groups.

RESULTSAfter six days of treatment, CD3+, CD4+, CD8+, IgG, IgA, IgM, and CD4+ /CD8+ ratio of three groups were all significantly increased (P < 0.01). Of them, CD3+, CD4+, CD8+, IgG, IgA, and IgM increased more significantly in the thymosin alpha1 group and the acupuncture treatment group (P < 0.01). Compared with the control group, the ICU hospitalization length was significantly shortened, the hospital readmission rate and the 28-day mortality were lower in the thymosin alpha1 group and the acupuncture treatment group (P < 0.05, P < 0.01). There was no statistical difference in each index between the thymosin alpha1 group and the acupuncture treatment group (P > 0.05).

CONCLUSIONAcupuncture could adjust the immune function of sepsis patients, improve their immunological indicators and prognoses.

Acupuncture Therapy ; CD4-CD8 Ratio ; Humans ; Length of Stay ; Prognosis ; Sepsis ; diagnosis ; immunology ; therapy ; T-Lymphocyte Subsets ; Thymosin ; analogs & derivatives

BACKGROUND: When the teeth affected abnormal biting force, tooth absorption and periodontium would be greatly damaged. OBJECTIVE: To study whether periodontal membrane fibroblast affected apoptosis following cyclic tensile stress stimulation and whether p38MAPK signaling pathway participated in apoptosis. METHODS: Fibroblasts at passages from 4 to 7 were randomly assigned to control, loading and SB203580 groups after synchronization. In the loading and SB203580 groups, 12% strain was applied at a loading frequency of 6 cycles per minute, i.e. 5 seconds for tension and 5 seconds for relaxation. In the SB203580 group, cells were treated with 20 mmol/L p38MAPK inhibitor SB203580 at 1 hour before loading. At 6, 12 and 24 hours after loading, cells from each group were harvested, and cell apoptosis was detected using a flow cytometry. Expression of bax mRNA was determined using reverse transcription-polymerase chain reaction. RESULTS AND CONCLUSION: Compared with the control group, apoptotic rate of fibroblasts and bax mRNA expression were increased after loading (P < 0.05), and enhanced over time, and peaked at 12 hour following loading, and then decreased gradually. Compared with the loading group, cell apoptosis was reduced at corresponding time points in the SB203580 group (P < 0.05), and bax mRNA expression was diminished. These results indicated that cells affected apoptosis after mechanics stimulation, and mitogen activated protein kinase p38MAPK signaling pathway participates in the process of apoptosis.

AIM: To discuss the relationship between prostate specific membrane antigen(PSMA) and prostate cancer and to seek a target for diagnosis and therapy of prostate cancer.METHODS: A pair of primers was designed according to the published PSMA mRNA sequence.Total RNA was extracted from prostate cancer tissues and was reversely transcribed into cDNA,which was used as a template for PCR to amplify the PSMA gene.The recombinant was sequenced and the result was analyzed by BLAST.The PSMA5 gene specific primers were designed to identify its expression in different cells and prostate tissues.RESULTS: A new alternatively spliced variant of PSMA named PSMA5 was discovered when sequencing the recombinant.PSMA5 showed well pathological tissue-specificity,and its expression rate in prostate cancer,benign prostatic hyperplasia of prostate,and normal prostate tissue were 92.6%,78.8% and 10.0%,respectively.It expressed specifically in Pca cell line LNCaP,not in cell lines of PC3,bladder carcinoma,renal carcinoma,or hepatoma.CONCLUSION: A new alternative spliced variant of PSMA named PSMA5 was discovered,which was well correlated with prostate cancer and benign prostatic hyperplasia.This finding may give a new clue to the evolution of prostate cancer and may provide a target for the diagnosis and therapy of prostate cancer.

AIM: To find out the gene structure and diversity of protate specific membrane antigen(PSMA) alternative spliced variants, and probe into the pathogenesis of prostate cancer.METHODS: 5'-RACE and 3'-RACE methods were used to amplify the 5' and 3'end of alternative spliced variant and then those viariants were sequenced for analyzing the gene stucture and diversity of PSMA alternative spliced variants of prostate cancer tissues.RESULTS: Four new alternative spliced variants of PSMA were discovered from prostate cancer tissues.Compared with reported PSMA alternative spliced variants,different insertions and deletions existed in different sites of those new variants.CONCLUSION: The discovery of the new variants confirms the diversity of PSMA spliced variants and provides the clues for seeking the target of diagnosis and therapy of prostate cancer.

Objective To localize the sinoatrial node (SAN) of the newborn rabbits in vivo and cut it for purifying cultivation and study the morophologic characters of primary cultured pacemaker cells of SAN under light microscope and transmissional electron microscope. Methods Hearts of the newborn rabbits were embedded in paraffin for HE-staining and observed the location, form of SAN under optical microscope; SAN cells isolated from neonatal rabbits cultured and purified with the method of differential attachment and BrdU-treatment.Results SAN localized in the anterior wall of the superior vena cava and the posterior-lateral atrial wall.There was about 0.32 mm between its lowest point and sulcus terminalis. Three distinctly different types of cells were observed among the cultured cells of SAN: spindle, araneiform and polygon. The spindle cells covered the greatest proportion of the cultured cells of SAN (59.6%?7.3%). The frequency of spontaneous contraction of spindle cells was the highest among the constrcting cells (145 ?9)time/min. The results of ultrastructure observation showed that myofibrils and other organelles in spindle cells were poorly organized and significantly decreased in number compared with araneiform cells. There was no significant difference between araneiform cells isolated from SAN and from atrial muscle.Conclusion Among the cultured cells from neonatal rabbits SAN, the spindle cells are the pacemaker cells of SAN.

Objective To investigate the clinical states of enuresis children companied with spina bifida occulta(SBO)and study the efficient way of treatment.Methods The children with SBO were check out by X ray from a total of 121 children with bedwetting.Their parents were asked to complete the enuresis questionnaires.Urine routine test and B-ultrasound examination about kidney,bladder and ureter were also asked to be done.The clinic data of the 49 children were attained and analyzed.They were randomly divided into 2 groups,and given the controlled treatment.Group A[used 1-deamino-8-D-arginine vas-opressin(DDAVP)only] and group B(used DDAVP plus oxybutynin plus bladder training)treated for 12 weeks.Results There were totally 49 bedwetting children companied with SBO,and most of them(44 cases,89.8%)were severe type(bedwetting times≥7 times/week).Some of them coexisted with frequency,urgency,gentle urgency incontinence and microscopic hematuria(22 cases).Thirty cases were found the functional bladder capacity(FBC)decrease by B-ultrasound.The cure rates were 58.3%(group A)and 88.0%(group B)respectively.The relapse rates were 36.8%(group A)and 12.5%(group B)respectively after stopping treatment for 3 months.Conclusions SBO accounts for considerably higher rate in enuretic children.It might cause the disability of bladder function.The treatment plan with DDAVP plus oxybutynin plus bladder training can not only increase the cure rate but also lower the relapse rate.

OBJECTIVETo observe the clinical effect of acupuncture on acute heart failure (AHF) patients.

METHODSTotally 60 patients who were diagnosed as AHF were assigned to the acupuncture group and the control group, 30 in each group. Those in the control group received inotropic agents, preload and afterload reducing therapy, anti-infection and so on. Besides, those in the acupuncture group received needling at relative points, once daily for 5 consecutive days. The mean arterial pressure (MAP), heart rate (HR), cardiac index (CI), stroke volume index (SI), left ventricle working index (LCWI) were monitored by thermodilution pulse-indicated continuous cardiac output (PiCCO) technique. Changes of the aforesaid data were compared between before and after treatment. The ICU length of stay, readmission rate,and the 28-day mortality were also compared between the two groups.

RESULTSAfter 5 days of the treatment, CI, SI, and LCWI increased more obviously (P < 0.01), HR and MAP decreased significantly (P < 0.05). Of them, CI, SI, and LCWI increased more obviously in the acupuncture group (P < 0.05).There was no obvious difference in HR or MAP between the two groups (P > 0.05). Compared with the first day of admission in the same group, CI, SI, and LCWI obviously increased in the acupuncture group from the second day (P < 0.05). HR started to decrease since the fourth day (P < 0.05), and MAP began to decrease until the fifth day (P < 0.05). CI, SI, and LCWI started to increase in the control group from the third day (P < 0.05); HR and MAP both began to decrease since the fifth day (P < 0.05). Compared with the control group, the ICU length of stay was obviously shortened in the acupuncture group (P < 0.05). The readmission rate and the 28-day mortality rate were lower than those of the control group (P < 0.05).

CONCLUSIONThe combination of acupuncture and Western medical therapy might strengthen acute heart failure patients' heart functions, elevate the therapeutic effect, and improve the prognosis.

Acupuncture Therapy ; Adult ; Aged ; Aged, 80 and over ; Female ; Heart Failure ; physiopathology ; therapy ; Heart Rate ; Humans ; Male ; Middle Aged ; Stroke Volume