Objective To apply a one-step loop-mediated isothermal amplification(LAMP) assay for rapid detection of Escherichiaco-li .Methods According to the Genbank of Escherichiacoli lacZ(accession number:M74750) ,a set of four specific primers were designed for the Escherichiacoli LAMP assay and optimized the reaction .The results were judged with naked eyes and electrophoretic analysis .Results Genomic DNAs from 13 bacterial strains including Escherichia coli strains were amplified using LAMP ,and no amplicon was observed in the other bacterial strains .The detection limits of LAMP assay was 15 cfu/mL .Conclusion LAMP assay is extremely rapid ,cost-effective , specific and highly sensitive and has potential usefulness for clinical application .

Objective To evaluate left ventricular regional systolic myocardial function quantitatively before and after coronary artery bypass graft(CABG) in patients with coronary artery disease(CAD) by strain rate imaging(SRI),and determine the effect of CABG.The diagnostic value of two-dimensional echocardiography(2-DE) method and SRI parameter method was compared.Methods The values of systolic strain rate(SRs) at 9 segments supplied by left anteior descending were measured in study group(20 patients with CAD) at 1 d before and 10 d,1 month,3 months and 6 months after CABG.The regional myocardial function befose CABG was analyzed and compared with that of controls,and abnormal segments were found.Then the values of these abnormal segments before and after CABG were compared.Results In control group,SRs displayed a wide and negative peak and was homogeneous in every segments.The SRs peak values decreased,and the homogeneity disappeared in study group.Beginning from 1 month after CABG,the SRs peak values at the graft segments increased in varying degrees,and there was significant difference at basal segments of anterior wall,middle segments of anteroseptal,and middle segments of posteroseptal in the different periods(P

Objective To establish a rapid ,sensitive direct method for detecting Escherichia coli (E .coli) in the positive blood culture bottles by using the loop‐mediated isothermal amplification (LAMP) .Methods Based on the lacZ (accession number :M74750) gene sequence of E .coli in the gene sequence GenBank by the National Institutes of Health (NIH) ,4 specific primers (2 inner primers and outer primers) were designed ,the lacZ gene was amplified and the amplification reaction was optimized .The sen‐sitivity and specificity of this method were verified and its comparison with the traditional culture method was conducted .Results Sixty‐eight strains of E .coli were detected in 300 positive blood culture bottles by adopting the LAMP method .The designed prim‐ers had good sensitivity and good specificity for the amplification of E .coli .The sensitivity and specificity of LAMP all reached 100% compared with the traditional method ,but the traditional method needed 3 d to get the results ,while LAMP only needed 1 h . Conclusion LAMP is extremely rapid for detecting E .coli with low cost ,strong specificity and high sensitivity and is suitable for clinical application .

This paper aims to analyze Professor Guo Rongjuan's medication experience on insomnia therapy based on the Traditional Chinese Medicine (TCM) Inheritance Support Plat. First, TCM formulae prescribed by Professor Guo for insomnia therapy were collected from the TCM Inheritance Support Plat. Next, unsupervised data mining algorithms, including apriori, modified mutual-information, and entropy clustering of complex system were applied to obtain the frequencies for different herbs and identify the association rules among the herbs. Accordingly, we can gain new insights into Professor Guo's medication experience on insomnia therapy. Based on analysis of 3 084 formulae, we determined the frequencies for herbs in the formulae and identified the association rules among these herbs. At last, 41 core combinations and 7 new formulae were obtained. The identified medication experience conform with Professor Guo's views on the etiology and pathogenesis of insomnia: "pathogenic fire derived from stagnation of liver-QI (Gan Yu Hua Huo)" is the core pathogenesis of insomnia; "liver stagnation and spleen deficiency" and "chronic illness transferred to kidney" are the main features for insomnia. The TCM Inheritance Support Plat is of great practical value for mining clinical experience of famous TCM doctors.
Algorithms ; Data Mining ; Databases, Bibliographic ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; administration & dosage ; chemistry ; Humans ; Sleep Initiation and Maintenance Disorders ; drug therapy

Abstract: Chigger mites belong to the phylum Arthropoda, class Arachnida, sub-class Acari, order Parasitiformes, family Trombiculidae and Leeuwenhoekiidae, with a wide range of species. There are more than 3 700 known species of mites globally, of which 531 species in 46 genera from three sub-families have been recorded in China, and 320 species of chigger mites recorded from 3 subfamilies and 32 genera in Yunnan Province. At this stage, chigger mites are the only vectors of scrub typhus, with about 60 species worldwide being potential vectors. Six vectorial mite species have been confirmed in China, including Leptotrombidium deliense, L.scutellare, L.rubellum, L.sialkotense, L.kaohuense, L.insulare. Yunnan Province has reported five vectorial mite species, including the previously-mentioned five species except for L.sialkotense. The zoogeographic study divided Yunnan Province into 5 zoogeographic areas, namely, Central Hengduan Mountains subregion, Southern Hengduan Mountains subregion, Eastern Yunnan Plateau subregion, Western Yunnan Plateau subregion, Southern Yunnan Mountainous subregion. The Southern Hengduan Mountains subregion has the highest number of known genera and species of scrub typhus and the highest number of scrub typhus cases, with 216 species in 22 genera from 3 subfamilies, and all 5 species of vector scrub typhus were distributed. Southern Yunnan Mountain subregion has the least number of mite species, with 91 species in 12 genera from three sub-families, with L. scutellare being the dominant vectorial mite species across the province. Due to suitable natural geographic conditions in Yunnan Province, vectorial mites can propagate rapidly, leading to a large number of scrub typhus cases. According to statistics, the number of scrub typhus cases in Yunnan Province has rapidly increased, with 15.40 times, 20.64 times and 28.91 times more cases in 2016, 2017 and 2018 respectively than in 2006. Scrub typhus remains a serious public health problem in Yunnan Province, posing a threat to the health of the local population. Therefore, prevention and control efforts should continue to focus on the affected areas and the general public.

Drugs, Chinese Herbal ; therapeutic use ; Humans ; Renal Insufficiency, Chronic ; drug therapy

Objective To study a safe method to dissect cystic duct under laparoscope. Methods Clinical data of 300 cases of posterior Calot's triangle approach laparoscopic cholecystectomy (LC) from November 2000 to April 2003 were analyzed respectively. Results Posterior Calot's triangle approach LC was successfully carried out in 282 cases while a conversion to open surgery was required in 18 cases (6%, 18/300). Postoperative complications were observed in 2 cases (0.7%, 2/300). Conclusions Posterior Calot's triangle approach LC is a safe procedure and simple to operate.

Objective To explore the effective way to decrease serious complications and to minimize the mortality following transcatheter hepatic arterial chemoembolization (TACE).Methods In 265 liver cancer patients experiencing TACE,the causes of death in 19 (20 days after TACE) were analyzed.Results 9 cases died of liver failure,4 died of the rupture of liver tumors, and 2 died of upper digestive tract bleeding.Gastroduodenal perforation,pulmonary embolism,myocardial infarction,and hyperkalemia resulted in death in one case,respectively.The mortality rates of primary liver cancer and liver metastasis were 9.2% and 1.4%,respectively (P

The heel vessel belongs to the eight extra meridians in human meridian system, which is closely related to the human motion function. Balance function plays an essential role in successful completion of activities in daily life, so the physiological function and pathology of heel vessel as well as human balance function are analyzed, and from the aspect of running course of heel vessel and syndrome, the correlation between heel vessel and human balance function is explored, and the application status of acupoints related to heel vessel for balance dysfunction is introduced. It is believed that heel vessel is closely related to human balance function, especially the motion regulation mechanisms of balance function, and it is hoped that new ideas and methods can be provided for acupuncture treatment for the balance function disorders.
Acupuncture Points ; Acupuncture Therapy ; Humans ; Meridians ; Postural Balance

OBJECTIVETo modify biomacromolecules, such as chitosan and collagen, to synthesize a mineralized template that will induce self-growing remineralization of tooth enamel.

METHODSNatural polycation polysaccharide chitosan was modified through phosphorylation to synthesize the polyanion derivative ofphosphorylated chitosan. Parent hydrogels com- bined with chitosan and collagen I were built through peptide binding reaction using genipin as a crosslinker. The gels self- assembled on the tooth's inert surface, which was stimulated by ultraviolet radiation. The bionic saliva provided mineralized ion, and then the hydroxyapatite assembled and grew in situ on the tooth.

RESULTSThe functional group P04(3-) (3,446 cm(-1)) was grafted on chitosan as confirmed by the Fourier transform infrared spectroscopy. The porous polyelectrolyte complex hydrogel formed by the interaction between the polycation chitosan and the polyanion phosphorylated chitosan could induce hydroxyapatite crystal nucleation and growth on the hydrogel fiber surfaces. The neonatal crystal was hydroxyapatite as confirmed by X-ray diffraction and was tightly connected to the tooth. A continuous structure of column crystals with sizes ranging from 30 nm to 60 nm was observed. The structure was in parallel direction similar to the direction of the enamel rod, and its hardness was close to dentin.

CONCLUSIONThe parent hydrogels that were easily obtained and controlled could mimic the template of the enamel mineralization and induce a self-growing hydroxyapatite, which is an important step in the structural bionics of enamel.

Biocompatible Materials ; Chitosan ; Collagen ; Dental Enamel ; Durapatite ; Microscopy, Electron, Scanning ; Polymers ; Spectroscopy, Fourier Transform Infrared ; Tooth ; Tooth Remineralization ; Ultraviolet Rays ; X-Ray Diffraction