Objective The distribution and drug resistance of pathogenic bacteria of the twin pregnancy with puerperal infection were analyzed.Methods 41 twin pregnancy cases with puerperal infection were screened out and the clinical data were retrospectively analyzed.Results A total of 48 main pathogenic bacteria were detected,including 21 Gram-positive bacteria:9 Staphylococcus aureus (18.8％),7 Streptococcus hemolyticus (14.6％) and 5 Enterococcus faecalis (10.4％);27 Gram-negative bacteria:12 Escherichia coli (25.0％),8 Aerogenic Enterobacter (16.7％) and 7 Gardnerella vaginalis (14.6％).Drug resistance:3 kinds of Gram-positive bacteria were strongly resistant to ceftazidime,and were sensitive to piperacillin sulbactam.Staphylococcus aureus and Streptococcus hemolytic streptococcus were sensitive to clindamycin,and Enterococcus faecalis was strongly resistant to penicillin.3 kinds of Gram-negative bacteria were sensitive to gentamicin and were strongly resistant to ampicillin and cefazolin.Escherichia coli and Enterobacteriaceae were sensitive to cefepime,and Gardnerella vaginalis were sensitive to levofloxacin,and were strongly resistant to cefepime.The main pathogenic bacteria were sensitive to meropenem and vancomycin.Conclusions According to the distribution and drug resistance of pathogens,we should rationally choose antimicrobial agents to prevent and cure puerperal infection of twin pregnancy.

Objective:To investigate the efficacy and safety of nano-particle albumin bound paclitaxel in the treatment of patients with advanced and relapsed cervical cancer.Methods:A retrospective cohort study was conducted. Among the cervical cancer patients who were diagnosed and treated in Affiliated Hospital of Yan'an University from January 2013 to January 2018, 52 advanced and relapsed cases were selected as the research objects. The chemotherapy protocol of nano-particle albumin bound paclitaxel and cisplatin was used, and the efficacy and toxicity of chemotherapy were analyzed.Results:The total objective remission rate of 52 patients with advanced or relapsed cervical cancer was 67.3% (35/52), the disease control rate was 88.5% (46/52), and the progression-free survival time was (11.7±3.6) months. The objective remission rate in patients who had received radiotherapy and with a time interval of > 12 months since their last chemotherapy was higher than that in patients who had not received radiotherapy and with a time interval of ≤ 12 months since their last chemotherapy [76.9% (30/39) vs. 46.2% (6/13), χ2 = 4.333, P = 0.037; 78.9% (15/19) vs. 43.8% (7/16), χ2 = 4.609, P = 0.032]. Late stage, relapse, whether received radiotherapy, whether received chemotherapy and the time from the previous chemotherapy had no effect on the disease control rate (all P > 0.05). The progression-free survival time in patients who underwent radiotherapy and with a time interval of > 12 months since their last chemotherapy was longer than that in patients who had not received radiotherapy and with a time interval of ≤12 months since their last chemotherapy [(13.0±4.4) months vs.(8.7±2.9) months, t = 3.029, P = 0.004; (12.8±3.1) months vs. (9.6±4.0) months, t = 2.665, P = 0.012]. The highest incidence rates of adverse reactions were myelosuppression (82.7%, 43/52) and gastrointestinal reaction (65.4%, 34/52), and the most common grade Ⅲ-Ⅳ adverse reaction was myelosuppression (20 cases). Conclusion:The efficacy and safety of nano-particle albumin bound paclitaxel combined with cisplatin in the treatment of advanced and relapsed cervical cancer are reliable.

OBJECTIVETo investigate the effect of D-AP5 (D-2-amino-5-phosphonopentanoate, a specific NMDA-antagonist) on the increase of intracellular free Ca2+ concentration ([Ca2+]i) induced by glutamate in isolated cochlear inner hair cells (IHCs), and to detect the autoreceptors of the IHC membrane.

METHODSWhen a laser scanning confocal microscope (LSCM) was used, the exogenous glutamate (Glu)-induced changes in [Ca2+]i of isolated IHCs and OHCs of guinea pig cochlea were observed with fluo-3, a fluorescent probe for [Ca2+]i. After D-AP5 or CNQX (6--cyano--7--nitroguinoxaline--2, 3--dione, a specific AMPA- antagonist) was administered, the exogenous glutamate (Glu)-induced changes in [Ca2+]i of isolated IHCs were recorded.

RESULTSIn the presence of a low concentration Glu (3.85 mumol/L), there was an increase of [Ca2+]i in IHCs, whereas there was no change in OHCs. When 50 mumol/L of D-AP5 was administrated in advance, Glu did not induce a corresponding increase in [Ca2+]i in IHCs, and 50 mumol/L of CNQX did not completely block the increase of [Ca2+]i in IHCs.

CONCLUSIONSThese results suggest that the autoreceptors existing in the IHC membrane are mainly of NMDA type, while there are relatively few AMPA receptors. Exogenous Glu is capable of increasing [Ca2+]i in IHCs by acting on the NMDA autoreceptor of IHCs in a positive feedback manner.

2-Amino-5-phosphonovalerate ; pharmacology ; 6-Cyano-7-nitroquinoxaline-2,3-dione ; pharmacology ; Animals ; Calcium ; metabolism ; Excitatory Amino Acid Antagonists ; pharmacology ; Glutamic Acid ; pharmacology ; Guinea Pigs ; Hair Cells, Auditory, Inner ; drug effects ; metabolism ; In Vitro Techniques ; Receptors, N-Methyl-D-Aspartate ; antagonists & inhibitors

Objective To investigate the clinical efficacy of neoadjuvant chemoradiotherapy in the treatment of locally advanced low and middle rectal cancer,and evaluate the effect of related clinical factors upon the long-term survival. Methods Clinical data of 101 patients with locally advanced low and middle rectal cancer admitted to our hospital from January 1,2010 to December 31,2014 were collected. All patients completed the preoperative intensity-modulated radiation therapy DT45-50. 4 Gy,synchronized with oxaliplatin+capecitabine/5-fluorouracil or single drug capecitabine chemotherapy,and total mesorectal excision) was performed 4-13 weeks after the end of the neoadjuvant therapy. The short-term efficacy and long-term prognosis of these patients were evaluated. Kaplan-Meier method was used for survival analysis,and Cox’s regression model for multivariate analysis. Results The total sphincter preservation rate was 53. 5%.The decrease rates of T,N staging and TNM total staging were 73. 26%,67. 32% and 72. 3%,respectively. The pathological complete response ( pCR) rate was 16. 8%.The median follow-up time was 41 months. The 3-year overall survival (OS), desease-free survival (DFS),local recurrence and distant metastases rates were 82. 2%,80. 7%,7. 2% and 12. 1%,respectively. The single factor analysis demonstrated that ypT and ypN stages were the risk factors affecting the 3-year OS,DFS anddistant metastases ( all P＜0. 05).Multivariate analysis revealed that ypT stage was an independent factor affecting the 3-year OS,and ypT and ypN stages were the independent factors of the 3-year DFS ( all P＜ 0. 05 ). ConclusionsNeoadjuvant chemoradiotherapy combined with TME in the treatment of locally advanced middle and low rectal cancer can partially decrease the tumor staging,enhance the sphincter preservation rate and improve long-term clinical prognosis. Both ypT and ypN stages are correlated with the clinical prognosis of patients.