Vacuum sealing drainage (VSD) is frequently used in abdominal surgeries. However, relevant guidelines are rare. Chinese Trauma Surgeon Association organized a committee composed of 28 experts across China in July 2017, aiming to provide an evidence-based recommendation for the application of VSD in abdominal surgeries. Eleven questions regarding the use of VSD in abdominal surgeries were addressed: (1) which type of materials should be respectively chosen for the intraperitoneal cavity, retroperitoneal cavity and superficial incisions? (2) Can VSD be preventively used for a high-risk abdominal incision with primary suture? (3) Can VSD be used in severely contaminated/infected abdominal surgical sites? (4) Can VSD be used for temporary abdominal cavity closure under some special conditions such as severe abdominal trauma, infection, liver transplantation and intra-abdominal volume increment in abdominal compartment syndrome? (5) Can VSD be used in abdominal organ inflammation, injury, or postoperative drainage? (6) Can VSD be used in the treatment of intestinal fistula and pancreatic fistula? (7) Can VSD be used in the treatment of intra-abdominal and extra-peritoneal abscess? (8) Can VSD be used in the treatment of abdominal wall wounds, wound cavity, and defects? (9) Does VSD increase the risk of bleeding? (10) Does VSD increase the risk of intestinal wall injury? (11) Does VSD increase the risk of peritoneal adhesion? Focusing on these questions, evidence-based recommendations were given accordingly. VSD was strongly recommended regarding the questions 2-4. Weak recommendations were made regarding questions 1 and 5-11. Proper use of VSD in abdominal surgeries can lower the risk of infection in abdominal incisions with primary suture, treat severely contaminated/infected surgical sites and facilitate temporary abdominal cavity closure.
Abdomen ; surgery ; China ; Drainage ; methods ; Evidence-Based Medicine ; Humans ; Practice Guidelines as Topic ; Societies, Medical ; organization & administration ; Surgical Wound Infection ; prevention & control ; Traumatology ; organization & administration ; Vacuum

Objective: To analyze perioperative serum high mobility group box-1 protein (HMGB1) levels in patients with acute cholangitis and its clinical significance. Methods: 118 cases of choledocholithiasis with acute cholangitis were retrospectively analyzed, admittd in Minhang Hospital from Jan 2017 to Dec 2017. Enzyme linked immunosorbent assay (ELISA) was used to detect serum HMGB1 levels before and after ERCP. The relationship between serum HMGB1 levels and severity of the disease was analyzed. Results: The serum HMGB1 levels in the healthy controls, mild cholangitis group, moderate cholangitis group and severe cholangitis group were(1.74±0.79) μg/L, (9.19±4.86) μg/L, (12.62±4.13) μg/L, (18.02±3.84) μg/L, respectively. The serum HMGB1 levels were significantly different in these four groups (F=63.348, P<0.05). The serum HMGB1 levels in the three groups after ERCP were significantly lower than those before ERCP(t=10.978, t=35.682, t=42.649; P<0.05). The serum HMGB1 levels were positively correlated with WBC, CRP, total bilirubin, direct bilirubin and alanine aminotransferase. Conclusion Serum HMGB1 levels were significantly higher in patients with acute cholangitis, and the more serious the disease, the higher the HMGB1 levels. After ERCP, serum HMGB1 levels were significantly lower than before. HMGB1 is an effective parameter for evaluating the severity of acute cholangitis.

Student contacts of tuberculosis (TB) cases are susceptible to latent tuberculosis infection (LTBI), and chemo-prophylaxis can reduce the risk of active TB among them. This study aimed to assess the acceptance of chemo-prophylaxis for LTBI among students, and their concerns regarding TB and its preventive treatment. A total of 560 students contacts were included in the investigation. The extent of contact was categorized from high to low (4 levels) with 12.9% of the students being close contacts. About 87.0% of the students were willing to receive chemo-prophylaxis if diagnosed with, LTBI, whereas 73 students declined. Students with a higher level of knowledge about TB (aOR = 1.11) or close contact with TB patients (aOR = 4.30) were more likely to accept treatment. To conclude, education regarding TB transmission is necessary. Moreover, LTBI detection should be integrated into the current school-based TB contact investigation.
Adolescent ; Adult ; Antitubercular Agents ; administration & dosage ; therapeutic use ; China ; epidemiology ; Contact Tracing ; Female ; Humans ; Latent Tuberculosis ; drug therapy ; epidemiology ; Male ; Students ; Tuberculosis, Pulmonary ; drug therapy ; epidemiology ; prevention & control ; transmission ; Universities ; Young Adult

Objective To obtain the environmental gamma radiation dose and the radioactivity level of environment medium in the Ninghai areas adjacent to Sanmen Nuclear Power Station before the Station running, and to establish the baseline data for environmental background radiation. Methods The environmental gamma radiation rate and cumulative dose was measured by sodium iodide scintillation detection and cumulative dose of thermoluminescence method.The total αand total βof water source in the monitoring areas was detected by low background αor βdetector, and the radionuclide in the food samples was detected byγ-ray spectrometer. Results Annual effective dose per residents in surveillance areas was 0.928 mSv.γ-ray of field external radiation dose rate was (98.32 ±21.08) nGy/h, and the annual cumulative environmental radiation dose was ( 1.040 ±0.044 ) mSv.There were seasonal differences in theγ-ray of field external radiation dose rate and cumulative environmental radiation dose.γ-ray of external radiation dose rate and the annual environmental cumulative dose in the range of 20 km was higher than in the range of 10 km and 30 km, but there were no statistical significance.Radioactive detection value of food samples were much less than the national standards, and the total radioactivity index of water source samples can be up to the national standard of drinking water. Conclusion Radioactive background in Ninghai areas adjacent to the Sanmen Nuclear Power Station was in the normal range, and there was seasonal variations.The study established baseline data for environmental background radiation before the Sanmen Nuclear Power Station running.In the future, the food sample monitoring should be focused on the artificial radionuclide 90 Sr, 137 Cs, 131 I , etc.

Bats are considered as important animal reservoirs for many pathogenic viruses to humans. The viral metagenomic analysis was performed to study gut and lung tissues of 30 insectivorous bats collected in Yunnan Province and 26 reads were noted to group A rotavirus (RVA). Further RT-PCR screening on bat samples and in vitro viral isolation on cell cultures confirmed the presence of a novel RVA, named as RVA/Bat-tc/MYAS33/2013/G3P[10], in one of 30 Stoliczka's trident bats. The VP7 gene of this strain MYAS33 was closely related to that of an equine RVA strain from Argentina and the nucleotide sequence similarity was 93%, while its VP4 gene was a rare P[10] type and obtained the maximum sequence identity (94.8%) with that of a human strain from Thailand. The present study highlights the potential role of bats as reservoirs for RVAs.
Animals ; China ; Chiroptera ; virology ; Humans ; Molecular Sequence Data ; Phylogeny ; Rotavirus ; classification ; genetics ; isolation & purification ; ultrastructure ; Rotavirus Infections ; veterinary ; virology ; Viral Proteins ; genetics

OBJECTIVETo study the feasibility and the characteristics of recombinant baculovirus as spiral ganglion cells (SGC) gene transfer vector.

METHODSAfter the generation of baculovirus- green fluorescent protein( Bac-GFP) according to Bac-to-Bac baculovirus expression system, SGC were infected by Bac-GFP with different multiplicities of infection (MOI) and different concentrations of sodium butyrate. The transfection cell rate and mean fluorescence strength (MFS) were detected by fluorescence microscopy and flow cytometry. Toxicity effects of recombinant baculovirus vectors and sodium butyrate on SGC were determined by spectroscopic measurement of 3-(4, 5)-dimethylthiahiazo (-z-y1)-3, 5-diphenytetrazoliumromide (MTF).

RESULTSBaculovirus was able to infect primary SGC cultures. The dose-response characteristics of Bac-GFP were determined on SGC, and the expression level could be up-regulated by sodium butyrate. Infection with Bac-GFP in the absence or presence of sodium butyrate (< or =10 mmol/L) was considered to be non-cytotoxic to primary SGC. GFP had been expressed in SGC at 6 h post-infection and the highest numbers of cells expressing GFP were observed at approximately 48 h post-infection.

CONCLUSIONSBaculovirus is a novel and promising tool for gene transferring into the cochlear nervous system both for studies of the function of foreign genes and the development of gene therapy strategies.

Animals ; Baculoviridae ; genetics ; Cells, Cultured ; Gene Transfer Techniques ; Genetic Vectors ; Green Fluorescent Proteins ; genetics ; Rats ; Rats, Sprague-Dawley ; Spiral Ganglion ; cytology ; Transfection