In the present study, the genomic sequence characteristics of HN-JY40 strains of the hepatitis E virus (HEV) isolated from pigs in Henan Province, China, were analyzed and the evolutionary relationship between HN-JY40 and other sequenced strains examined. The whole genome of HN-JY40 was sequenced and analyzed by reverse transcription-polymerase chain reaction, 3' rapid amplification of cDNA ends (3' RACE) and 5' RACE. Bioinformatic analyses were carried out with Megalign, Expasy, clustal x, and MEGA 4 software. The genome of HN-JY40 was 7 223 bp in size upon removal of polyA sequences. Sizes were 9 bp and 69 bp at 5' and 3' noncoding regions, respectively. The genome of HN-JY40 was predicted to contain three open reading frames (ORFs): ORF1 (5 124 bp) encoding 1 707 amino acids; ORF2 (2 025 bp) encoding 674 amino acids; ORF3 (345 bp) encoding 114 amino acids. Phylogenetic-tree analyses indicated that HN-JY40 is a typical type-IV virus that belongs to a new subgenotype of HEV genotype 4. We sequenced and analyzed the whole genome of HN-JY40. This strategy elicited the genomic characteristics of the HEV isolated from pigs in Henan Province as well as the evolutionary relationships between HN- JY40 and other HEV isolates from pigs. We revealed that the ORF1 of HN-JY40 (153-432 nt) and human HK 104-2004 had high similarity, which offers molecular evidence for uncovering the interspecies transmission of the HEV.
Amino Acid Sequence ; Animals ; Base Sequence ; China ; Cloning, Molecular ; Genome, Viral ; Hepatitis E ; veterinary ; virology ; Hepatitis E virus ; classification ; genetics ; isolation & purification ; Humans ; Molecular Sequence Data ; Open Reading Frames ; Phylogeny ; Sequence Homology, Amino Acid ; Swine ; Swine Diseases ; virology

Objective:To study the role of adhesion molecules in the pathogenesis of polymyositis. Methods:The abnormal expression of adhesion molecules on T cells in peripheral blood and muscle fibers from patients with myositis was analyzed by two colour immunofluoresence and RT PCR methods respectively. Results:The expression of adhesion molecules including lymphocyte function associated antigen 1(LFA 1 ),very late antigen 4(VLA 4) on T cells in peripheral blood and intercellular adhesion molecule l(ICAM 1) on muscle fibers from patients with myositis was markedly higher than that in the healthy control group. Conclusion: These findings suggested that adhesion molecules may be responsible for the migration of T cells and destraction of muscle fibers.

In this report, we utilized N-Acetylmuraminidase (AcmA) to develop a whole-cell catalyst of endo-beta-1, 3-1, 4-glucanase in Lactococcus lactis. The PCR-amplified full-length acmA gene from L. lactis MB191 was fused with the green fluorescent gene (gfp), followed by ligating the chimeric acmA-gfp into the Escherichia coli-L. lactis shuttle expression vector pMG36k, yielding the recombinant plasmid pMB137. SDS-PAGE analysis showed that the constitutive expression of AcmA-GFP fusion protein in the L. lactis AS1.2829 construct harboring pMB137 (named MB137), with the predicted Mr of 74 kD. Western blotting, GFP specific fluorescence intensity assays and flow cytometry analysis confirmed that AcmA-GFP was immobilized on the outer membrane, which constituted approx. 35% of the total intracellular fusion protein. Furthermore, acmA was fused with a PCR-amplified encoding fragment of the endo-beta-1, 3-1, 4-glucanase gene (gls) from Bacillus sublitis BF7658, resulting in the recombinant plasmid pMB138. By transferring pMB138 into L. lactis AS1.2829, the derived L. lactis MB138 expressing the AcmA-GLS fusion enzyme exhibited a distinct whole-cell glucanase activity (by 12 U/mL) compared to the control strain, indicating AcmA had served as a functional anchoring motif to immobilize the heterologous enzyme on the cell surface of L. lactis.
Electroporation ; Endo-1,3(4)-beta-Glucanase ; genetics ; metabolism ; Escherichia coli ; genetics ; metabolism ; Glycoside Hydrolases ; genetics ; metabolism ; Green Fluorescent Proteins ; genetics ; metabolism ; Lactococcus lactis ; enzymology ; genetics ; Recombinant Fusion Proteins ; genetics ; metabolism ; Recombination, Genetic

Objective:To investigate the risk factors related to choledocholithiasis in gallstone patients.Methods:The clinical data of 140 patients with gallstones or gallstones complicated with choledocholithiasis treated at our hospital from Jan 2017 to Dec 2019 were analyzed retrospectively.Results:The results showed gallstones≥ 10 mm (χ 2=7.896, P=0.019), parapapillary diverticulum (χ 2=10.849, P=0.013), the number of gallstones (single vs. multiple) (χ 2=9.760, P=0.080), age ( t=2.767, P=0.006), diameter of common bile duct ( t=8.068, P=0.000), total bilirubin level ( t=2.372, P=0.019), alkaline phosphatase ( t=2.448, P=0.016), significantly related to the formation of common bile duct stones. Logistic regression analysis showed that gallstone ≥ 10 mm, common bile duct dilatation, parapapillary diverticulum and multiple gallstones were all independent risk factors for choledocholithiasis in gallstone patients. Conclusion:A variety of risk factors were responsible for the formation of choledocholithiasis in gallstone patients.

Objective:To study the impact of selective occlusion of hepatic arterial blood flow in external capsule excision for hepatic cystic echinococcosis.Methods:A retrospective analysis was conducted on the data of 80 patients with hepatic cystic echinococcosis who underwent surgical treatment from January 2017 to January 2019 in the First Affiliated Hospital of Xinjiang Medical University. There were 36 males and 44 females, with an average age of 47 years. All patients underwent external capsule excision of hepatic cystic echinococcosis. According to the type of intraoperative blood flow occlusion, the patients were divided into: group A ( n=42), selective occlusion of hepatic artery; group B ( n=38), Pringle’s maneuvre. The hospitalization stay, intraoperative blood loss, postoperative ventilation time and complications were compared between the two groups. The postoperative alanine aminotransferase (ALT), aspartate aminotransferase (AST), albumin, and total bilirubin were compared between the two groups. Results:The intraoperative blood loss (215.7±29.6) ml, postoperative ventilation time (2.3±0.1)d, and hospital stay (11.6±1.0) d in group A were better than those in group B (254.8±20.6) ml, (3.2±0.2) d, (12.7±0.7) d, the differences were significant (all P<0.05). There were 4 patients (9.5%) who developed postoperative complications in group A and 5 patients (13.2%) in group B. There was no significant difference between the two groups ( P>0.05). Group A had better ALT, AST, albumin, and total bilirubin on day 3 after operation, and the differences were significant (all P<0.05). The ALT (62.8±5.2) U/L, AST (32.7±2.6) U/L, albumin (39.1±0.3) g/L, total bilirubin (12.1±0.5) μmol/L in Group A were better than group B (121.9±5.6) U/L, (53.9±8.0) U/L, (32.2±0.6) g/L, (19.3±0.9) μmol/L on day 5 after operation, the differences were significant (all P<0.05). Conclusion:Selective occlusion of the hepatic artery in external capsule excision for hepatic cystic echinococcosis was superior to the traditional Pringle’s maneuver in controlling intraoperative bleeding and postoperative liver function recovery.

Objective:To analyze the treatment and the impact of brain metastases on patients with hepatic alveolar hydatid disease.Methods:The data of 11 patients with hepatic alveolar hydatidosis with brain metastases treated at the First Affiliated Hospital of Xinjiang Medical University from January 2014 to December 2019 were retrospectively analyzed. There were 7 males and 4 females. The age range was 19~49 years, with an average of 34 years. Of 11 patients, 7 were treated with surgery combined with drugs and 4 with drugs only. Analyze the treatment and results of patients.Results:Of the 7 patients who were treated with surgery and drugs, 2 patients underwent hepatectomy. They were treated with regular postoperative oral medication and were well on follow-up. Three patients underwent only brain surgery. On follow-up from 1 to 3 years, one patient developed pneumonia with atelectasis, another patient developed ascites and jaundice with physical decline. The third patient was stable and had an independent life. Two patients underwent partial hepatectomy and hydatidectomy, with one patient requiring repeated hydatidectomies. On follow-up for one of these 2 patients for 5 years, the patient was home bound and could not take care of himself. The other patient was followed up for 3 years and was stable, alive and able of self-care. Four patients were treated with albendazole liposome, including one patient who developed ascites, a second one with weight loss, physical decline, limb edema and a third one with pleural effusion, pelvic effusion and pneumonia. These patients were still alive with improvement of symptoms on supportive treatment.Conclusion:The treatment of hepatic alveolar hydatidosis with brain metastases is still mainly surgery and anti-hydatid drugs. The prognosis of most patients was poor. The surgical principle is neurosurgery first, followed by surgery on liver, lung, spleen and other organs involved by hydatid disease.

Objective: To invastigate how to differentiate the single cystic hepatic hydatidosis from single hepatic cysts. Methods: From Apr 2014 to Aug 2018 at the First Affiliated Hospital of Xinjiang Medical University, 30 cases of liver single cystic diseases were misdiagnosed·Relevant clinical data were compared including medical history, imaging features, immunological examination etc. Results: 18 cases of echinococcosis were misdiagnosed as hepatic cysts before operation, and 12 patients with hepatic cysts were misdiagnosed as hepatic cystic echinococcosis before operation.There were no significant differences between the two groups in eosinophil count (Eo#)(t=1.35, P>0.05), albumin (t=0.38, P>0.05), aspartate aminotransferase (t=0.99, P>0.05), and CT values(t=0.85, P>0.05). The results suggest that anti-EgCF antibody(χ²=4.26, P<0.05) and EgB antibody (χ²=7.26, P<0.05) are of significantly differential value in the identification of the two diseases. Conclusion Levels of anti-EgB and anti-EgCF antibodies to hepatic cystic echinococcosis are higher than that to single hepatic cysts.

Objective: To describe the dermoscopic features of extramammary Paget′s disease (EMPD) and chronic eczema of the vulva, and to explore the value of dermoscopy in the diagnosis and differential diagnosis of the above diseases. Methods: Dermoscopic images were collected from 20 patients with histopathologically confirmed vulvar EMPD and 16 patients with clinically confirmed chronic eczema of the vulva in Hospital for Skin Diseases, Chinese Academy of Medical Sciences and Pekin Union Medical College from January 2017 to April 2018, and retrospectively analyzed. Fisher′s exact test was used to compare the prevalence of dermoscopic features between the two groups. Results: As dermoscopy showed, the milky red background was observed in 19 EMPD patients and in only 1 patient with chronic eczema, and there was a significant difference in the prevalence of milky red background between the two groups (P < 0.001) . White scales were the most common desquamation, and were observed in 9 EMPD patients and 13 patients with chronic eczema (P = 0.128) . Blood vessels were uniformly distributed in EMPD patients, including dotted-globular vessels in 19 and linear vessels in 14, while blood vessels were distributed in a patchy or clustered pattern in the patients with chronic eczema, including dotted-globular vessels in 16 and linear vessels in 7. There was a significant difference in the prevalence of different distribution patterns of blood vessels between the two groups (P < 0.001) . Bright white streaks, bright white structureless area and reticular structure were observed in 19, 20 and 19 EMPD patients respectively, and in 1, 1 and 1 patient with chronic eczema respectively, and there were significant differences in the prevalence of the above 3 structures between the two diseases (all P < 0.001) . Conclusion Vulvar EMPD and chronic eczema both show characteristic dermoscopic features, and dermoscopy is of great value to the diagnosis and differential diagnosis of EMPD.