ABSTRACT
Objective Nicotinamide phosphoribosyltransferase (Nampt) is a new therapeutic target for ischemic stroke. The aim of this study was to investigate protective effect of liver-derived Nampt on ischemic stroke. Methods Liver-specific Nampt knockout mice were generated using the Cre/loxP system. NamptloxP/loxP mice were crossed with liver-specific Cre recombinase expression mice (Alb-Cre), and the progeny genotypes were identified by polymerase chain reaction. Body weight of knockout mice and control mice were measured. Nampt in liver and brain was determined by Western blot assay. Middle cerebral artery occlusion (MCAO), a classical ischemic stroke model, was generated in liver-specific Nampt knockout mice and control mice by electrocoagulation. After 24 h of modeling, neurological deficit scores of each group were evaluated and TTC staining was performed to determine the cerebral infarction volume. The level of plasma Nampt in each group was determined by ELISA. Results Liver-specific Nampt knockout mice with the genotype of NamptloxP/loxPAlb-Cre were successfully constructed. The hepatic Nampt expression in knockout mice was significantly decreased by 74.2% compared to control mice, while there was no significant difference in the expression of brain Nampt protein between the knockout group and the control group. Specific knockout of liver Nampt gene expression had no effect on the body weight of mice. Under normal physiological conditions, there was no significant difference in plasma Nampt levels between liver-specific Nampt knockout mice and control mice of the same gender. 24 h after MCAO modeling, there were no significant differences in neurological deficit scores, cerebral infarct volume and plasma Nampt concentration between liver-specific Nampt knockout group and control group. Conclusion Liver-specific Nampt knockout mice are successfully constructed. Liver-derived Nampt has no significant protective effects on ischemic stroke.
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Objective To conduct a retrospective study about drug-induced hyperthermia (DIH) based on DIH data obtained in medical practice,and elucidate the relationship between DIH incidence and antibacterials overuse.Methods To investigate successively the medical records of inpatients from orthopaedics department in Fudan university affiliated Jinshan hospital at two different periods,and data of DIH cases were extracted to perform a comparative study.The period for 229 effective cases of group Ⅰ was from Feb.1 to Apr.30,2011,before significant improvement on antibacterials use.The period for 342 effective cases of group Ⅱ was from Jul.1 to Sep.30,2012,after the effective enforcements of regulation on antibacterials use.Inclusion criteria for DIH were:①an oral temperature ≥37.6 ℃ since postoperative day 4,②no evidence of infection,③a time relationship between fever and the administration of causative drugs:a fever occurring with drug administration and disappearing after drug cessation within 3 days,④no other causes for the fever,⑤oral temperature ≤ 37.6 ℃ until leaving hospital.Exclusion criteria for DIH were listed below:①possible pathological fever,e.g.,in cancer,②hospitalization within 3 days,③no surgery,④severe trauma,for example,visceral or central nervous system injury.Results All causative drugs were for injection.By comparison,duration of antibacterial administration is significantly shorter in group Ⅱ than in group Ⅰ (1.7 ± 1.7 vs.4.6-± 1.8days,P ＜ 0.01),and total DIH incidence and antibacterials related DIH incidence were significantly lower in group Ⅱ than in group Ⅰ (7.3％ vs.30.1％,1.5％ vs.25.3％,both P ＜0.01).Conclusion DIH incidence is related with drug type especially with antibacterials overuse,and changed with drug program.DIH was more serious for injection of antibacterials than injection of traditional Chinese medicine.Decrease of antibacterials usage is positively associated with the decreased DIH incidence.Safe medication should begin from safe usage of antibacterials.
ABSTRACT
OBJECTIVE:To provide reference for the rational use of narcotic drugs. METHODS:The utilization of narcotic drugs for inpatients in our hospital during 2012-2014 were collected from HIS,and analyzed statistically in respects of consumption amount,consumption sum,DDDs,B/A,DDC and consumption amount of the different departments,and so on. RESULTS:The quantity and consumption amount of Morphine sulfate sustained-release tablets,Oxycodone hydrochloride sustained-release tablets and Codeine phosphate tablet ranked the first 3 places during 2012-2014. Morphine sulfate sustained-release tablets,Oxycodone hy-drochloride sustained-release tablets and Fentanyl transdermal patch(8.4 mg)steadily occupied the first 3 places in the list of con-sumption sum. In the list of DDDs,Fentanyl transdermal patch and Morphine sulfate sustained-release tablets took up the first 3 places;Morphine hydrochloride injection,Bucinnazine hydrochloride injection and Meperidine hydrochloride injection occupied the last 3 places. B/A value of Morphine sulfate sustained-release tablets and Fentanyl transdermal patch(8.4 mg) in 2012,Oxycodo-ne hydrochloride sustained-release tablets in 2014,Fentanyl transdermal patch(2.5 mg)in 2013 and 2014 were all equal to 1 and synchronized well. Others were all biased. DDC of narcotic drugs kept stable in 3 years,and DDC of Oxycodone hydrochloride sus-tained-release tablets took up the first place,followed by Fentanyl transdermal patch (8.4 mg). Narcotic drugs were consumed in 19 departments,but mainly in the department of oncology and general surgery. In the department of oncology,the consumption amount and sum of oral formulation were both significantly higher than other dosage forms,accounting for more than 88% and 52% respectively. CONCLUSIONS:The variety and dosage form of narcotic drugs could meet the clinical needs and its application is basically reasonable. Besides,the utilization of narcotic drugs in the department of oncology consistent with the basic principles of WHO three steps cancer analgesia treatments.