Objective To study the drug resistance of neonatal sepsis caused by Klebsiella pneumoniae and provide evidence for drug treatment. Method Retrospectively analysis was conducted on the clinical data and antibiotic resistance of Klebsiella pneumoniae in 50 neonates with sepsis. Results The majority of the 50 cases were infected in hospital. There were 13 ESBLs strains in 50 Klebsiella pneumoniae strains (26%), and the others were negative ESBLs starins (74%). All the strains were multidrug-resistance to the β-lactam antibiotics and only sensitive to few antibiotics such as Imipenem and Amikacin. The sensitive rate was 100%. Conclusions The first selected antibiotic for the treatment of neonatal sepsis caused by Klebsiella pnemoniae was Imipenem or Amikacin.

Originating from Treatise on Cold Damage （ZHANG Zhongjing）， Wumeiwan is a representative prescription for pungent dispersing and bitter descending， upper clearing and warm purging， and combining cold and warm， which can be used to treat abdominal pain， enduring diarrhea， and syncope caused by cold and heat in complexity and asthenia in origin and sthenia in superficiality. Owing to the remarkable clinical efficacy， it is widely applied to the treatment of various internal injuries and external-contraction diseases. In recent years， the incidence of diseases of large intestine such as ulcerative colitis， Crohn's disease， and colorectal cancer has been on the rise， threatening the quality of life and health of patients. Major headway has been made in the clinical research on the treatment of the above diseases with Wumeiwan and on the mechanisms. However， no relevant summary is available， leading to the failure of further excavation and utilization of the value of this prescription in the treatment of the above diseases in time. Therefore， this paper reviews the theoretical basis， clinical research， and mechanism research of Wumeiwan and its modified formulas in the treatment of diseases of large intestine in recent years. The literature research suggests that Wumeiwan can effectively relieve clinical symptoms and reduce recurrence rate of large intestine diseases （including ulcerative colitis， Crohn's disease， diarrhea-predominant irritable bowel syndrome， colorectal cancer， chemotherapy-induced intestinal mucositis， and postoperative colorectal adenoma） with little adverse reactions. At the moment， the mechanisms of Wumeiwan against the above diseases are anti-inflammatory response， regulating immune function， repairing intestinal mucosal barrier， anti-tumor， regulating intestinal flora， anti-oxidative damage， analgesia， and inhibiting colonic epithelial cell apoptosis， but the specific molecular mechanism should be further explored. Through literature research， this paper comprehensively analyzes the theoretical basis， clinical research， and mechanisms of Wumeiwan in the treatment of diseases of large intestine， which is expected to serve as a reference for the further research on Wumeiwan in the prevention and treatment of diseases of large intestine and the mechanisms.

OBJECTIVE To study the safety of Shuangshu decoction in rats and its efficacy in improving functional dyspepsia （FD） in rats. METHODS In safety test， 40 rats were divided into blank control group， Shuangshu decoction low-dose， medium- dose and high-dose groups [108， 216， 324 g/（kg·d）， calculated by raw medicine， the same applies below]； they were given relevant medicine intragastrically， for continuous 14 days. The mortality and toxic reactions of rats were recorded， and the organ indexes of the liver， kidney， spleen， lung and heart of rats were calculated； the pathological morphological changes in the liver， kidney， spleen， lung， heart， stomach， duodenum， and colon were observed to evaluate the acute toxicity of Shuangshu decoction. Another 40 rats were grouped and administered in the same way for 30 consecutive days. The mortality and toxic reactions of the rats were recorded， and the corresponding organ indexes were calculated. The pathological morphological changes in the corresponding organs were observed， and blood routine and serum biochemical indicators were measured， in order to assess the subacute toxicity of Shuangshu decoction. In pharmacodynamic experiments: 50 rats were divided into blank control group， model group， and Shuangshu decoction low-， medium-， and high-dose groups （9.45， 18.9， 37.8 g/kg）， with 10 rats in each group. Except for blank control group， rats in all other groups were used to establish the FD rat model by subcutaneous injection of loperamide （3.5 mg/kg）. Rats in each group were administered the corresponding drug solution/normal saline intragastrically， once a day， for 14 consecutive days. After the last medication， fecal moisture content， intestinal propulsion rate， gastric emptying rate and serum level of motilin were all detected， and interstitial cell of Cajal （ICC） ultrastructure of rats was observed in colon tissue. RESULTS The safety experiments showed that no death occurred in each dose group， and no significant difference was found in organ coefficient， routine blood and serum biological index， compared to blank control group （P＞0.05）； no abnormality was found in organ appearance and pathological sections. The results of the pharmacodynamic experiments showed that， compared with the blank control group， the fecal moisture content， gastric emptying rate， intestinal propulsion rate， and serum motilin levels in the model group were significantly decreased （P＜0.05）； in the colonic tissue， the mitochondria in the ICC exhibited severe swelling with the disappearance of cristae， and the endoplasmic reticulum was dilated. Compared with model group， the rats in Shuangshu decoction high-dose group showed significant increases in the above quantitative indicators （P＜ 0.05）； additionally， there was a large number of mitochondria in the ICC of the colonic tissue， with clear cristae and regular arrangement. CONCLUSIONS Shuangshu decoction is safe and has a beneficial improving effect on FD rats； its mechanism of action may be related to the regulation of gastrointestinal hormone expression to promote gastric emptying and intestinal propulsion， as well as the repair of mitochondrial structure in ICCs to restore gastrointestinal function.