Objective:To investigate the microbial contamination status of Chinese herbal pieces from Guangxi regions and provide reference for the microbial limit standard. Methods:According to Chinese Pharmacopoeia (2015 edition), the herbal pieces were analyzed for the total number of aerobe microbial, yeasts, molds, thermophilic bacteria and bile-resistant gram-negative bacteria,and salmonella was also detected. Results:In 90 batches of Chinese herbal pieces,the lg average value of the total number of aerobe microbial was 3.7,and that of the total yeasts and molds was 1.7,that of thermophilic bacteria was 0.9 and that of bile-resistant gram-negative bacteria was 1.1,and Salmonella was not detected out. There were statistically significant differences (P < 0.05) in the microbial contamination levels of herbal pieces with different processing techniques and packaging materials. Conclusion:According to different processing methods and administration, microbial limit standard should be established for classification in order to guide the standardized production of Chinese herbal pieces and improve their quality gradually.

Objective To discuss key points of prevention and treatment of perioperative pulmonary hypertensive crisis in patients with serious pulmonary arterial hypertension associated with ventricular septal defect. Methods Retrospectively analyzed the nursing experience of perioperative pulmonary hypertensive crisis on 31 patients with serious pulmonary arterial hypertension associated with ventricular septal defect from March to December during 2016.Among these patients,7 patients occurred pulmonary hypertensive crisis.The prevention contained avoiding oxygen lack,keeping pH alkaloid in the body, application of pulmonary vasodilator, deep sedation. Results A total of 30 cases survived the perioperative period, and were discharged from the hospital, one died. Conclusions The patients with serious pulmonary arterial hypertension had more risks during the perioperative period,the main cause of death was pulmonary hypertensive crisis during this time.So prevention of pulmonary hypertension crisis is the key point of postoperative nursing.

Objective To observe the effects of Banxia Xiexin Decoction on intestinal microbes and 5-HT in ulcerative colitis(UC)model mice induced by drinking sodium dextran sulfate(DSS),and to analyze the mechanism of Banxia Xiexin Decoction in treating UC from the perspective of brain-gut axis.Methods 40 male C57BL6/J mice were randomly divided into control group,model group,positive drug(mesalazine)group and Banxia Xiexin decoction group.All mice except control group were induced by 2.5%DSS solution for 7 days to establish UC model.From the 8th day,mice in the above groups were given intragastric administration of sterilized water,mesalazine aqueous solution and Banxia Xiexin decoction aqueous solution.HE staining was used to observe histopathological changes of colon,ELISA to detect 5-HT content in serum,colon and brain tissues,and 16S rRNA sequencing to further detect the changes of fecal flora in model mice.Results Compared with model group,DAI index of experimental mice model group was significantly decreased after Banxia Xiexin Decoction intervention(P<0.05);IL-2,IL-4 and IFN-γ were significantly recovered(P<0.05).The histopathological score of proximal and distal colon was significantly decreased(P<0.01).Moreover,the peripheral 5-HT level was significantly decreased(P<0.05),but the central had an increasing trend.Results of intestinal flora showed that the relative abundance of Clostridium_sensu_stricto_1,unclassified_p__Firmicutes increased(P<0.05),while Lachnospiraceae_NK4A136_group,Lachnoclostridium,norank_f__Oscillospiraceae and Eubacterium_xylanophilum_group decreased(P<0.05).It was also found that there were significant correlations between intestinal microflora and peripheral and central 5-HT levels.Conclusion Banxia Xiexin Decoction could play a role in treating ulcerative colitis by improving the intestinal microbial composition structure of UC mice to reduce peripheral 5-HT levels and increase central 5-HT levels,thereby improving intestinal inflammatory response and relieving anxiety.

Whether direct manipulation of Parkinson's disease (PD) risk genes in the adult monkey brain can elicit a Parkinsonian phenotype remains an unsolved issue. Here, we used an adeno-associated virus serotype 9 (AAV9)-delivered CRISPR/Cas9 system to directly co-edit PINK1 and DJ-1 genes in the substantia nigras (SNs) of two monkey groups: an old group and a middle-aged group. After the operation, the old group exhibited all the classic PD symptoms, including bradykinesia, tremor, and postural instability, accompanied by key pathological hallmarks of PD, such as severe nigral dopaminergic neuron loss (>64%) and evident α-synuclein pathology in the gene-edited SN. In contrast, the phenotype of their middle-aged counterparts, which also showed clear PD symptoms and pathological hallmarks, were less severe. In addition to the higher final total PD scores and more severe pathological changes, the old group were also more susceptible to gene editing by showing a faster process of PD progression. These results suggested that both genetic and aging factors played important roles in the development of PD in the monkeys. Taken together, this system can effectively develop a large number of genetically-edited PD monkeys in a short time (6-10 months), and thus provides a practical transgenic monkey model for future PD studies.
Animals ; Brain ; CRISPR-Cas Systems/genetics* ; Dependovirus/genetics* ; Haplorhini ; Phenotype ; Protein Kinases/genetics*

Whether direct manipulation of Parkinson’s disease (PD) risk genes in the adult monkey brain can elicit a Parkinsonian phenotype remains an unsolved issue. Here, we used an adeno-associated virus serotype 9 (AAV9)-delivered CRISPR/Cas9 system to directly co-edit PINK1 and DJ-1 genes in the substantia nigras (SNs) of two monkey groups: an old group and a middle-aged group. After the operation, the old group exhibited all the classic PD symptoms, including bradykinesia, tremor, and postural instability, accompanied by key pathological hallmarks of PD, such as severe nigral dopaminergic neuron loss (>64%) and evident α-synuclein pathology in the gene-edited SN. In contrast, the phenotype of their middle-aged counterparts, which also showed clear PD symptoms and pathological hallmarks, were less severe. In addition to the higher final total PD scores and more severe pathological changes, the old group were also more susceptible to gene editing by showing a faster process of PD progression. These results suggested that both genetic and aging factors played important roles in the development of PD in the monkeys. Taken together, this system can effectively develop a large number of genetically-edited PD monkeys in a short time (6–10 months), and thus provides a practical transgenic monkey model for future PD studies.