Objective:To analyze the clinical features, treatment efficacy and prognosis of cavernous lymphangioma.Methods:The clinical manifestations, laboratory findings, imaging examinations and treatment of 8 patients with pathology-diagnosed cavernous lymphangioma admitted in Peking Union Medical College Hospital from January 1990 to July 2020 were retrospectively analyzed.Results:All the patients were female. The onset age ranged from 0 to 58 years, with a course of 24 (5,78) months. There were 2 cases of abdominal mass, 2 cases of axillary mass, 1 case of neck mass, 1 case of inguinal mass, 1 case of mandibular mass and 1 case of pleural and peritoneal effusion. Seven cases had adult onset and 1 case had congenital onset. Two patients had had history of surgery adjacent to lesion sites. Contrast-enhanced CT scan showed a low-density round mass with no significant enhancement in 5 patients. Seven patients underwent complete resection of the mass, 1 patient received partial resection and intervention with medium-chain fatty-acid diet. During the follow-up, 4 patients were stable after 3.5 (1.3-17.8) years, while 2 patients relapsed 1 and 13 year after surgery, respectively. Additionally, one patient was diagnosed with Bowen disease.Conclusion:Cavernous lymphangioma can be congenital or acquired and usually occurs in female. The body mass is the common clinical manifestation; and surgery is the most common treatment, but it is prone to relapse and requires long-term follow-up.

Objective To study the biofilm-forming ability and the distribution of biofilm-related genes in Acinetobacter baumannii clinical isolates as well as antimicrobial resistance,to analyze their relationships with the bacterial resistance phenotype.Methods A prospective study was conducted.Biofilm models of 70 strains Acinetobacter baumannii collected in Chengwu County People's Hospital from October 2012 to October 2013 were constructed using 96-well polystyrene plate.In order to analyze the biofilm-forming ability,a qualitative and quantitative analysis was conduct by crystal violet staining assay.And the antimicrobial resistance of different biofilm-forming ability strains was compared including imipenem,amikacin,meropenem,cefepime,sulbactam cefoperazone,trimethoprim,levofloxacin,gentamicin,ciprofloxacin,cefotaxime,ceftizoxime,aztreonam,piperacillin,ceftriaxone,cefuroxime.In addition,the expressions of biofilm-related gene Bap,bfs and intI1 were tested with polymerase chain reaction (PCR) assay.Results Among 70 strains Acinetobacter baumannii,40 strains were multi-drug resistant (57.14％) and 6 strains were pan-drug resistant (8.57％); 68 strains had biofilm-forming ability (97.14％),14 of which were weakly positive,20 were positive and 34 were strongly positive.The antimicrobial resistant rate of Acinetobacter baumannii to imipenem,amikacin,meropenem and cefepime was decreased,it was 30.00％,32.86％,38.57％ and 41.43％,respectively.However,the antimicrobial resistant rates to other commonly used antibiotics were all higher than 50％.The drug resistance of Acinetobacter baumannii to levofloxacin (85.71％,45.00％,38.24％,x2=9.225,P=0.010),cefepime (71.43％,45.00％,29.41％,x2=7.222,P=0.027),gentamicin (78.57％,55.00％,38.24％,x2 =6.601,P=0.037) was significantly decreased when biofilm-forming ability reinforced (weakly positive,positive,hadro-positive).Bap gene positive rate of weakly positive,positive and strong positive biofilm-forming strains Acinetobacter baumannii was 50.00％,65.00％ and 79.41％ (x2=4.244,P=0.120),respectively.Bfs gene positive rate was 35.71％,65.00％ and 88.24％,respectively (x2=13.602,P=0.001) and intI1 gene positive rate was 42.86％,75.00％ and 91.18％,respectively (x2 =12.902,P=0.002).Moreover,the antimicrobial resistances of biofilm-related gene positive strains were higher than the negative,of which the drug resistance of intI1 positive group to amikacin was significantly higher than the negative group (40.38％ vs.11.11％,x 2=5.194,P=0.023).Conclusions The Acinetobacter baumannii collected from the hospital had strong multi-drug resistance as well as strong biofilm-forming ability.The drug resistance of Acinetobacter baumannii decreased when biofilm-forming ability reinforced.In addition,genes,such as Bap,bfs,and intI1,contributed to biofilm formation.

Objective To explore the survival rate and early-term effects of sensory reconstruction of the modified first dorsal metacarpal artery (FDMCA) flap in treatment of thumb distal soft tissue defect.Methods From March 2004 to October 2007, 65 patients with soft tissue defects of the thumb underwent the FDMCA flap in our department. Forty-nine cases with complete data were included in the study. There were 37 males and 12 females, with an average age of 32 years (ranged, 18-65 years). The conventional surgical methods were used in 18 cases while the improved surgical methods were in 31 cases. The distal necrosis, the vascular crisis rate and the sensory recovery were recorded. Results The mean follow-up period was 2 years (ranged, 20 months to 3 years). Forty-six flaps survived completely. Vascular crisis occurred in five cases harvested by the conventional methods. Eventually, three of them had a partial distal necrosis.Improved FDMCA flap survived well in all 31 patients. Flaps in these patients with nerve anastomosis restored satisfied sense and all sense were located in the thumb. Eighteen cases of nerve transfer group had different levels of mixed feelings (33%) or ectopic sensory (62%). Sense was located in the thumb completely in 1 case. Conclusion The modified FDMCA flap significantly increased the survival rate. Neurorrhaphy could make the sense of the flap locate in the thumb; however it had not been proved that its impact on the recovery of two-point discrimination and stereognosis.

Objective To investigate the protective effects of Erqi Decoction(EQD; mainly composed of Radix Aristolochiae Kaempferi, Radix Rhizoma Seu Flos Cypripedii, Cortex Fraxini, Cortex Phellodendri, Radix et Rhizoma Rhei) on the intestinal tract in rats with acute radiation intestinal injury and its mechanism. Methods Sixty SD rats were randomly divided into normal group, model group, EQD group and Baitouweng Decoction group (BD group), 15 rats in each group. The acute radiation enteritis model was established by exposing the whole abdomen to a total dose of 10 Gy of 6 MV higher-energy X-rays. EQD group and BD group were given intragastrical administration with corresponding medicine of EQD at the dose of 8.85 g·kg-1·d-1, BD at the dose of 4.69 g·kg-1·d-1 respectively, and the normal group and the model group were given intragastrical administration with the same volume of normal saline. The treatment lasted for 7 continuous days. After modeling, the morphological change of the proximal ileum tissue was observed under light microscope. Villus height, crypt depth, and thickness of the ileal mucosa and entire wall were measured by image analysis system. The myeloperoxidase (MPO) content in ileum tissue was determined by spectrophotometer, and the expression levels of caspase -3 and proliferating cell nuclear antigen (PCNA) in ileum tissue were determined by immunohistochemistry. Results EQD group and BD group had milder injuries of the ileal structure, and had higher villus height, crypt depth, and thickness of mucosa and entire wall than those in the model group (P <0.05), but there were no differences between the two medication groups(P > 0.05). MPO content in EQD group and BD group was decreased(P<0.05 compared with that in the model group), and MPO content in EQD group was lower than that in BD group. The expression levels of caspase-3 and PCNA were increased in EQD group and BD group(P < 0.05 compared with those in the model group), but there were no statistical differences between the two medication groups (P>0.05). Conclusion EQD has certain protective effects against radiation-induced intestinal damage, which mechanism is probably associated with relieving the local intestinal inflammatory reaction, accelerating intestinal epithelial cell proliferation, and inhibiting intestinal epithelial cell apoptosis.

Post-stroke aphasia refers to acquired language disorder caused by cerebrovascular disease.As part of cognitive function,language is closely related with other non-linguistic cognitive function.In recent years,many scholars have begun to pay attention to the relationship between language disorder and non-verbal cognitive function in patients with post-stroke aphasia.This paper describes the epidemiology of cognitive impairment in patients with post-stroke aphasia,and summarizes the relationship between language obstruction and the non-language-based cognitive function in patients with aphasia after stroke (such as working memory,attention,execution,etc.) to provide a direction for further research.

Objective To explore the relation between plasmocytoid dentritic cells (pDCs) and cerebral immune-inflammation reaction following ischemic stroke. Methods Circulating pDCs were measured by flow cytometry in 62 patients with acute ischaemic stroke (AIS), 26 healthy controls, 12 patients with asymptomatic cerebral infarction stenosis (ACI-S), and 14 patients with transient ischaemic attack (TIA). The sizes of infarct lesions were assessed by DWI scanning. AIS group was further divided into lacunar infarction group, small infarction group,and large infarction group according to the infarction area. The correlation between the number of pDCs and NHISS score and CRP level was also analyzed in AIS group. Results The labsolute number of pDCs and the percentage of pDCPs to circulating blood white cells were significantly lower in AIS group than in the healthy control group (P<0.001). As compared with lacunar infarction group, the number of pDCPs decreased significantly in large infarction group. The number of pDCPs was negatively correlated with the levels of CRP and the NIHSS score. Conclutions Patients with AIS has a decreased level of circulating pDCs, which may be involved in the gathering of circulating pDCs in the infarcted brain to trigger cerebral immune reaction.

Objective To evaluate the efficacy and safety of a superpulse-mode fractional carbon dioxide(CO2) laser for the treatment of onychomycosis. Methods Patients with typical clinical manifestations of onychomycosis and positive for direct microscopic examinations of fungi were enrolled into this study, and treated with a superpulse-mode fractional CO2 laser for eight sessions. The scoring clinical index for onychomycosis (SCIO)and onychomycosis severity index (OSI)were calculated according to patients′ age, clinical type of onychomycosis, thickness of nails, area and length of nail involvement before the treatment, at the end of treatment, 1 month and 3 months after completion of treatment. Mycological clearance was also evaluated according to direct microscopy and fungal culture results. Adverse reactions to laser therapy were recorded. Statistical analysis was carried out by using the chi-square test and Wilcoxon signed-rank sum test with the SPSS 17.0 software. Results Totally, 20 patients with onychomycosis were enrolled into this study, and 75 affected nails were treated. Finally, 18 patients with 71 target nails completed the treatment and follow-up. The SCIO and OSI were 13.07 ± 6.47 and 21.11 ± 11.94 in these patients at baseline respectively, both significantly different from those at the end of treatment(9.03 ± 6.14 and 13.63 ± 12.10, respectively, both P < 0.05), 1 month((8.51 ± 6.99 and 14.18 ± 13.65, respectively, both P < 0.05)and 3 months(7.89 ± 7.26 and 13.70 ± 13.93 respectively, both P <0.05)after completion of treatment. No significant differences were observed in mycological clearance rates between the posttreatment time points(57.75%(41/71)at the end of treatment vs. 59.15%(42/71)at 1 month vs. 61.97%(44/71) at 3 months after completion of treatment, P > 0.05). The SCIO and OSI decreased from 12.48 ± 5.41 and 16.44 ± 9.89 at the baseline to 5.01 ± 5.56 and 6.44 ± 8.26 at 3 months after the treatment, respectively, in patients with distal and lateral subungual onychomycosis (DLSO), and from 17.86 ± 3.98 and 34.05 ± 2.56 to 15.88 ± 4.10 and 31.00 ± 7.28 respectively in patients with total dystrophic onychomycosis (TDO). During the treatment, several patients felt transient mild pain, but no subungual hemorrhage or other adverse reactions occurred. Conclusions The fractional CO2 laser in superpulse mode shows a reliable efficacy for the treatment of mild to moderate onychomycosis such as DLSO, especially when the nail plate is superficially invaded and grows rapidly. It directly inhibits and kills fungi, and treatment duration should be prolonged according to conditions.

BACKGROUND:B-lymphocytes are an important participant in the immunity system. Currently, magnetic beads and complement methods are mainly used to isolate and purify B-lymphocytes. However, these methods are costly or cause large cel damage and low purity, which need further improvement. OBJECTIVE: To explore the isolation and culture methods of B-lymphocytes from mouse spleen and to study suitable conditions for B-lymphocyte isolation and culture in vitro by using interleukin-4, lipopolysaccharide, CD3 monoclonal antibody or their combination. METHODS:B-lymphocytes from mouse spleen were isolated and randomly divided into seven groups, respectively treated with interleukin-4, CD3 monoclonal antibody, lipopolysaccharide, interleukin-4+CD3, interleukin-4+lipopolysaccharide, CD3+lipopolysaccharide, and no stimulation (control group). Flow cytometry was used to detect the changes in the number and proportion of T-lymphocytes, B lymphocytes, and their subpopulations under different culture conditions. RESULTS AND CONCLUSION:The number of lymphocytes peaked at 3-5 days after addition of interleukin-4. In the lipopolysaccharide group, the number of lymphocytes began to increase at 3 days, and then peaked at 5 days. T-lymphocytes disappeared after addition of CD3 monoclonal antibody, so relatively pure B-lymphocytes could be obtained after 2 days and the number of B-lymphocytes reached the peak at 3 days. The number of mature B-lymphocytes (B220+IgD+) increased significantly after addition of CD3 antibody. In al the conditions we tested, transitional B cel subset (B220+CD93+) disappeared completely after 24 hours of culture. Experimental results indicate that after addition of CD3 monoclonal antibody and interleukin-4, T-lymphocytes can be removed in mouse spleen cels cultured, but mature B-lymphocytes remain to survive and proliferate.

Objective To establish a molecular technique of internal transcribed spacer (ITS) sequencing to identify pathogenic fungi species from the fungal sinusitis tissues. Methods Total 270 sinusitis tissues samples were collected by endoscopic surgery from 2006 to 2008. The histopathology, organize spring clip culturation and ITS region (ITS region region of fungal rRNA, including ITS1-5. 8S rRNA-ITS2) sequencing were employed simultaneously. And then to evaluate the ITS sequencing as the tool for identification of pathogenic fungi directly from clinical samples. Results Of the 270 samples, histopathology positive rate was 80.0% (216/270) , organize spring clip positive rate was 80.0% (216/ 270), fungal culturation positive rate was 53.0% (143/270) , ITS region sequencing positive rate was 63. 0% [ (134 +28 +8)/270], There were 22 species and 6 genera identified by fungal culturation, and 32 species identified by ITS region sequencing. Conclusion ITS region sequencing will become a applicable tool in clinical laboratory in future.

BACKGROUND: Some studies have showed that after indirect co-culture, bone marrow mesenchymal stem cells can differentiate into myocardial cells and hepatocypte-like cells. OBJECTIVE: To investigate the possibility of human umbilical cord blood mesenchymal stem cells (UCB-MSCs) to differentiate into hepatocytes by co-culture with human hepatocyte line LO2 in vitro.METHODS: Full-term umbilical cord blood samples were obtained sterilely. The UCB-MSCs were isolated by density gradient centrifugation and directly adherence growth, then passaged with trypsin digestion at 80% cell fusion. By utilizing cell culture plate insets with microporous membrane combined with 6-well plate, the LO2-/UCB-MSCs co-culture system was established. UCB-MSCs were plated into the wells of 6-well plate at a density of 1×10~7/L. LO2 cells were plated into the cell culture plate insert at a density of 1×10~5/L. UCB-MSCs were plated in both layers in the control group. Surface markers of adhered cells were detected by flow cytometry. Morphological changes of UCB-MSCs were observed by inverted phase contrast microscopy. mRNA expression was detected by reverse transcriptase PCR. RESULTS AND CONCLUSION: HUCB MSCs expressed CD44 and CD29 strongly, but CD34 and CD45 were expressed negatively. After 5 days, fusiform-shaped cells were reduced in the co-culture group; while, the time passing by, cells shaped irregular round or polygonal were increased, which were similar to hepatocytes. At 4 weeks after culture, UCB-MSCs were still fusiform-shaped in the control group. At day 5 after culture, alpha fetoprotein mRNA expressed positively, but other expressed negatively in the co-culture group; at day 14 after culture, cytokeratin-19 mRNA and albumin mRNA expressions were observed; moreover, with the time passing by, the expression of albumin mRNA was increased, but the expression of alpha fetoprotein-19 mRNA was decreased. Antigenic expressions in the control group were negative. This suggested that UCB-MSCs could differentiate into hepatocypte-like cells by co-culture with human hepatocyte line LO2 in vitro.