Objective To study the expression of p53,p16,PCNA protein in esophageal carcinoma and its relationship to sexual distinction,the location of disease,the biological level,the depth of invasion and lymph node metastasis.Methods 118 patients with esophageal carcinoma were included in the study,all of them were treated for the first time.p53,p16 and PCNA protein in the 118 cases of esophageal carcinoma were detected by immunohistochemical assay(SP technique). Results The positive expression of p53, p16, PCNA protein in 118 patients was 80 %(92/118),42%(50/118)and 97%(115/118),respectively.The positive expression of p53,PCNA protein were irrelated to the sexual distinction,the location of disease,the biological level,the depth of invasion and the lymph node metastasis.The loss of p16 was significantly related to the depth of invasion and the lymph node metastasis(P

OBJECTIVETo observe the clinical efficiency of curettage combining circumcision on giant condyloma acuminata(CA) in male external genitalia, the relationship between recurrence and curettage depth, the possibility of HPV infection in PBMC after operation.

METHODSCurettage combining circumcision was carried out on 50 cases with CA. The removed wart and wound surface tissues were examined under light microcope and for HPV-DNA detection by PCR. HPV-DNA was detected in PBMC during < or =1 and > or =2 weeks after operation.

RESULTS(1) 46 cases were cured completely after one treating (once the cure rate is 92%), 4 cases twice(twice the cure rate is 8%); (2) The tissues were proved to be HPV-DNA positive by PCR amplification and CA relapse occurred; (3) HPV-DNA was detected in PBMC only within the week after curettage in the 19 cases.

CONCLUSIONS(1) The clinical efficiency of curettage combining circumcision on giant condyloma acuminata in male external genitalia is sure; (2) Cure rate and relapse rate are related with curettage depth; (3) Transient positive HPV-DNA in PBMC may be detected.

Adolescent ; Adult ; Aged ; Circumcision, Male ; Condylomata Acuminata ; surgery ; Curettage ; methods ; Humans ; Male ; Middle Aged ; Young Adult

OBJECTIVETo investigate the expression of LTF mRNA in several nasopharyngeal cancer (NPC) cell lines, and analyze the relationship between the genetic and epigenetic changes and expression of LTF gene.

METHODSThe expression level of LTF was detected in NPC cell lines HNE1, HNE2, HNE3, CNE1, CNE2, 5-8F, 6-10B cells and tissues of 15 cases of chronic nasopharyngitis by RT-PCR. The LTF protein level was analyzed by Western blotting in 6-10B cells. Then LOH, mutation and methylation status of LTF was examined by microsatellites analysis, PCR-SSCP, MSP and bisulfite genomic sequencing, respectively.

RESULTS15 chronic nasopharyngitis tissues showed stable LTF expression, while there were weak expression in 6-10B cells and absent expression in remaining detected NPC cell lines. There was a significantly lower LTF expression in chronic nasopharyngitis tissues (Z = -3.738, P = 0.000). No LTF protein expression was observed in 6-10B cells. LOH analysis demonstrated that allele loss of LTF wasn't found in NPC cell lines. LTF mutation was noted in 14.3% (1/7) of NPC cell lines. DNA sequencing confirmed the mutation point in the promoter region (-305 bp to -50 bp) was at -218 bp (del T) of LTF gene in the HNE1 cell line. Methylation of LTF gene was not found in chronic nasopharyngitis. However, methylation of LTF promoter was detected in all NPC cell lines. LTF mRNA expression was increased in 5-8F and 6-10B cell lines after treatment with 5-aza-2-deoxycytidine.

CONCLUSIONThere is an inactivation of expression of LTF gene in the NPC cell lines. Its molecular mechanism may be related with methylation of promoter region and deletion mutation.

Antimetabolites, Antineoplastic ; pharmacology ; Azacitidine ; analogs & derivatives ; pharmacology ; Cell Line, Tumor ; DNA Methylation ; Epigenesis, Genetic ; Gene Deletion ; Humans ; Lactoferrin ; genetics ; metabolism ; Loss of Heterozygosity ; Nasopharyngeal Neoplasms ; genetics ; metabolism ; pathology ; Nasopharyngitis ; genetics ; metabolism ; Promoter Regions, Genetic ; genetics ; RNA, Messenger ; metabolism

BackgroundThe quest to look for seed cells is a hot spot of cornea transplant research in solving the problem of the lack of donor. Bone marrow mesenchymal stem cells(BMSCs) have been successfully induced into retinal ganglion cells(RGCs) in vivo,but the successful induction of BMSCs into corneal endothelial cells has not been reported.Objective This experiment was to study the transplantation of BMSCs on corneal endothelial surface using the splitting Descemet's membrane. MethodsFour healthy adult rhesus monkeys were divided into the experimental group ( 3 monkeys) and control group ( 1 monkey). Mesenchymal stem cells (MSCs) were isolated from bone marrow by density gradient centrifugation combined with adhering means. The cultured cells were identified by flow cytometry and its ability to differentiate was determined by allowing them to differentiate into adipocytes in vitro and labeled by 5-bromodeoxyuridine ( BrdU ) for subsequent identification. Corneal grafts of 7 mm in size with tearing of the Descemet' s membrane were prepared in the experimental group and control group. After labeling by 5-bromodeoxyuridine( BrdU ) ,cultured cells were transplanted onto the endothelial surface of cornea grafts in the experimental group, but no cultured cells were seeded in the graft of the control group. The corneal grafts were then sutured in situ, and were removed 1,2 or 3 months after operation to examine the distribution and connection between transplanted cells and their morphologic changes under the electron microscope. Results High purity MSCs were harvested by density gradient centrifugation combined with adhering method. Cultured cells reached confluency after 12 to 16 days, presenting with a spindle shape and parallel or swirling arrangement. Flow cytometry analysis showed that 94.26％ of cells were positive for CD29,7. 51％ for CD34 and 4. 02％ for CD45. Larger nuclei filled with plastosomes, golgiosomes and rough endoplasmic reticula were found on the graft under the transmission electron microscope( TEM ). After 3 weeks, MSCs were differentiated into adipocytes where Oil Red O staining resulted in an orange-red staining in the cytoplasm and blue staining in the nuclei. The transplanted cells attached loosely on the endothelial surface of the corneal graft and came in contact with each other in one month. The shape of the cells appeared as spindle-shaped and polygonal after 2 months and became tightly packed after 3 months. The positive cells retained the BrdU label and presented with brown nuclei. No endothelia cells grew in the cornea graft in the control group, with an absence of BrdU labeling. Conclusions Mesenchymal stem cells can be transplanted onto the corneal endothelial surface successfully and form a monolayer using the centrifugation method, and present with good survival and proliferation ability.

Objective - （ ） To evaluate the effect of job rotation on pain in wrist work related musculoskeletal disorders WMSDs （ ）Methods of physical therapists PTs . A total of 100 PTs from nine medical institutions were selected as the research subjects ， using judgment sampling method and they were divided into control group and intervention group by stratified random sampling ， method with 50 person in each group. The individuals in control group perform routine works. People in the intervention group were rotated between posts or added mobile shift replacements in daily work for 30 minutes. The duration of intervention was ， ， （ ） once a day five days a week for ten weeks. Visual Analogue Scale VAS score and pain duration were used as the evaluation ， indexes of intervention effect. The changes of indexes before intervention five weeks and ten weeks after intervention were Results ， compared between the two groups. Before intervention there was no significant difference in the VAS score and pain （ P ） duration between the control group and the intervention group all >0.05 . There was no significant difference in VAS score （ P ） and pain duration among the control group at three time points after intervention all >0.05 . The VAS score of PTs in the （P ）， intervention group at ten weeks was lower than that in the control group at the same time point <0.05 and it was lower than （ P ） that before intervention and at five weeks of intervention in the same group all <0.05 . The pain duration of PTs in the （ P ）， intervention group was lower than that in the control group at five and ten weeks after intervention all <0.05 and was lower （ P ） Conclusion ， than that before intervention at the same group all <0.05 . Rotating schedule can relieve WMSDs of PTs and the effect of intervention for ten weeks is more effective than that of intervention for five weeks.

Objective To explore a better method for treatment atrophic rhinitis.Methods 56 patients with atrophic rhinitis(96 lateral)were treated by nasal submucou pediculated bone-suberiosteal muscle flap extracted from anterior wall of sinus maxillaries.Results All patients were followed 2 to 10 years,total effective rate was 100 %, with 49 cases(87.5 %)showing prominent effect.Conclusion The grafted flap cannot be assimilated,felled off and necrosis,because the flap has rich blood supply.This methods has obvious short-term effective and stable long-term effective.No complications were found.

BACKGROUNDTo investigate the immunological and virological efficacy of the therapeutic vaccine HBV CS1, a recombinant fusion protein which is composed of HBV core aa 1-155 plus PreS1 aa 3-55,against chronic HBV infection.

METHODSHBV transgenic mice were immunized with HBV CS1(5 ug) emulsified in equal volume of complete Freund adjuvant on day 0, followed by a second vaccination with HBV CS1(5 ug) emulsified with incomplete Freund adjuvant on days 21. Mice of control group were mock-vaccinated with PBS plus complete Freund adjuvant/incomplete Freund adjuvant. The splenocytes of individual mouse were subjected to T cell proliferation assays by using 3Hg thymidine, HBsAg and HBV DNA in sera of mice were detected by ELISA and quantitative PCR, respectively.

RESULTSHBV CS1 specific T cell response were induced in mice immunized with HBV CS1, with the titer of HBsAg and the level of HBV DNA decreased significantly after twice immunization with HBV CS1, while the control group almost remained the same.

CONCLUSIONHBV CS1 has the immunological and virological efficacy against chronic HBV infection in HBV transgenic mice; HBV CS1 could represent candidate vaccine for further studies on its role as therapeutic vaccine against HBV chronic infection in human.

Animals ; Female ; Hepatitis B Antibodies ; blood ; Hepatitis B Core Antigens ; genetics ; immunology ; therapeutic use ; Hepatitis B Surface Antigens ; genetics ; immunology ; therapeutic use ; Hepatitis B Vaccines ; genetics ; immunology ; therapeutic use ; Hepatitis B virus ; genetics ; immunology ; Hepatitis B, Chronic ; drug therapy ; immunology ; Humans ; Immunization ; Male ; Mice ; Mice, Transgenic ; Protein Precursors ; genetics ; immunology ; therapeutic use ; Random Allocation ; Recombinant Fusion Proteins ; genetics ; immunology ; therapeutic use

OBJECTIVEThe objective of this study was to observe the interventional effect of cod liver oil supplementation on re-vaccination to hepatitis B virus (HBV) among infants and young children.

METHODSAll 7-36 months old infants and young children, who had been vaccinated with obligatory HBV vaccines routinely by the national technical and administrative procedures for HBV vaccination on children of China, were convened among villages in Linyi, Shandong province, from October 2008 to March 2009. After detection of serum anti-HBV, one hundred children with lower serum anti-HBV were picked out for the randomized, double blinded, placebo controlled vitamin A supplementation study. The children in the intervention group (50 subjects) took 0.5 g condensed cod liver oil (containing 25 000 IU vitamin A and 2500 IU vitamin D(2)) every 15 days for six times. The children in the control group (50 subjects) were given corn oil with same volume. All children were re-vaccinated at the 30th and the 60th day of the experiment. The serum samples were collected from each child at the 90th day of the experiment. Retinol concentration in serum samples was analyzed with HPLC method before and after the intervention. The levels of serum anti-HBs were detected by the electro-chemi-luminescence immunoassay (ECLIA).

RESULTSTotal 74 children finished the supplemental experiment and blood collection, 37 subjects in each group, respectively. After intervention, the serum retinol level in the experimental and control group were (404.1 ± 123.1) and (240.8 ± 92.8) µg/L (t = 6.441, P < 0.01), respectively. The serum anti-HBs levels in the experimental and control group were (2737.2 ± 2492.6) and (1199.7 ± 2141.6) U/L (t = 2.846, P < 0.01), respectively. The rate of weak or no-answer case in experimental and control groups was 0.00% (0/37) and 10.81% (4/37) (χ(2) = 4.229, P = 0.040), respectively.

CONCLUSIONThe results showed that vitamin A supplementation might enhance the re-vaccination reaction against HB vaccine in infants and young children.

Child, Preschool ; Cod Liver Oil ; therapeutic use ; Dietary Supplements ; Double-Blind Method ; Hepatitis B ; prevention & control ; Hepatitis B Antibodies ; blood ; immunology ; Hepatitis B Vaccines ; immunology ; Hepatitis B virus ; immunology ; Humans ; Immunity, Active ; Infant ; Vitamin A ; therapeutic use ; Vitamins ; therapeutic use

Pharmaceutical cocrystals is an advanced technology to improve the physicochemical and biological properties of drugs. However, there are few studies on the in vivo metabolism of pharmaceutical cocrystals. In this study, the pharmacokinetics of wogonin cocrystal in normal rats was further studied on the basis of the previous preparation of wogonin-aloperine cocrystal. Firstly, an ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was established for simultaneous determination of wogonin and its metabolite wogonoside in rat plasma, and to investigate the methodology. The method was applied to the pharmacokinetic study of wogonin-aloperine cocrystal (Wog-Alop) in rats. The results showed that wogonin and its metabolite wogonoside had a good linear relationship in the range of 1-800 ng·mL^-1, and the precision, accuracy, matrix effect and stability in this range met the requirements of biological analysis. Compared with direct administration of wogonin, the C_max of wogonin and its metabolite in rats increased to 7.44-fold and 9.15-fold, AUC_0-t increased to 1.67-fold and 3.72-fold, and oral bioavailability of wogonin increased to 187.66% after cocrystal administration. Wog-Alop cocrystal can significantly improve the C_max, AUC, and oral bioavailability of wogonin and its metabolite, which provides a new perspective for the clinical application of wogonin. This study was approved by the Experimental Animal Ethics Review Committee of Beijing University of Chinese Medicine (approval number: BUCM-2023032307-1148).

DNA, Viral ; blood ; isolation & purification ; False Negative Reactions ; Hepatitis B virus ; genetics ; Humans ; Indicators and Reagents ; classification ; Polymerase Chain Reaction ; methods