Aged ; Antigens, CD34 ; metabolism ; Breast Neoplasms ; metabolism ; pathology ; therapy ; Chemotherapy, Adjuvant ; Combined Modality Therapy ; Epithelioid Cells ; pathology ; Female ; Follow-Up Studies ; Hemangiosarcoma ; metabolism ; pathology ; Humans ; Immunohistochemistry ; Mastectomy, Radical ; Neoplasms, Second Primary ; metabolism ; pathology ; Radiotherapy, Adjuvant ; Vimentin ; metabolism

Adult ; Hamartoma ; pathology ; Humans ; Lung ; pathology ; Lung Neoplasms ; pathology

OBJECTIVETo further verify the efficacy and safety of locally manufactured lamivudine on patients with chronic hepatitis B (CHB).

METHODS2200 patients with CHB were recruited and received lamivudine orally 100 mg once daily for 12 months. The efficacy assessments included virologic response rate (defined by the absence of serum HBV DNA, HBeAg loss and HBeAg/HBeAb seroconversion), percentage of patients with normalization of alanine aminotransferase (ALT). Meanwhile improvement of quality of life (QOL) measured by mos SF-36 QOL questionnaire and liver histology evaluation were conducted in some patients. The safety assessments included adverse events, serious adverse events and laboratory abnormalities. All 2200 patients received at least one dose of medication and were all included in the safety population.

RESULTSNinety seven percent of patients (2137/2200) recruited were HBV DNA positive by dot blot (sensitivity GRT or equal to 1.0 pg/ml) at baseline. At the end of 12 months treatment, HBV DNA was undetectable in 80% patients (1538/1920) with HBV DNA positive before treatment. Among the 79%(1744/2200) of the patients recruited had positive HBV DNA accompanied abnormal ALT levels at baseline, 72% patients became ALT normal. And among the 84% (1843/2200) of the patients recruited were HBV DNA and HBeAg positive, anti-HBe negative, 16% (269/1650) patients achieved HBeAg/HBeAb seroconversion after 12 months of lamivudine treatment. The HBeAg/HBeAb seroconversion rate was positive correlation to the ALT level before treatment. A total of 304 patients completed the health-related QOL questionnaire. After 12 months treatment, lamivudine improved both their physical and mental health, especially for their mental health. 133 evaluable, paired liver biopsies were obtained for histological assessment, among whom 115 patients had abnormal ALT levels at baseline. Compared with pre-treatment most of their liver injury got alleviated (51.9%) or no further deterioration (36%), only 12% worsening. During the 12 months treatment, 9% patients withdrew from the study and 17% patients showed at least one adverse event, mild or moderate. There were no obvious difference between this study and the previously reported lamivudine Phase II or III study with regard to the kinds, incidence and severity of adverse events.

CONCLUSIONThe efficacy and safety profile of the locally manufactured lamivudine 100 mg tablets are similar with those of the previously reported available lamivudine tablets imported in treating Chinese chronic hepatitis B patients.

Adolescent ; Adult ; Aged ; Antiviral Agents ; therapeutic use ; Child ; DNA, Viral ; blood ; Hepatitis B e Antigens ; blood ; Hepatitis B, Chronic ; drug therapy ; psychology ; virology ; Humans ; Lamivudine ; adverse effects ; therapeutic use ; Liver ; pathology ; Middle Aged ; Quality of Life

Adult ; Aged ; Bacterial Infections ; diagnosis ; immunology ; Female ; Hepatitis B, Chronic ; diagnosis ; immunology ; microbiology ; Humans ; Male ; Middle Aged ; Prognosis ; T-Lymphocyte Subsets ; immunology ; Young Adult

Adenine ; administration & dosage ; analogs & derivatives ; therapeutic use ; Adolescent ; Adult ; Alanine Transaminase ; blood ; Antiviral Agents ; administration & dosage ; therapeutic use ; DNA, Viral ; blood ; Drug Resistance, Viral ; Drug Therapy, Combination ; Female ; Hepatitis B e Antigens ; blood ; Hepatitis B virus ; drug effects ; genetics ; Hepatitis B, Chronic ; blood ; drug therapy ; Humans ; Lamivudine ; administration & dosage ; therapeutic use ; Male ; Middle Aged ; Organophosphonates ; administration & dosage ; therapeutic use ; Treatment Outcome ; Young Adult

Adult ; Female ; Hepatitis B e Antigens ; blood ; Hepatitis B, Chronic ; blood ; diagnosis ; Humans ; Male ; Middle Aged ; Prognosis

OBJECTIVETo investigate the biological characteristics of xenogenic acellular dermal matrix( Xeno-ADM) incorporated with silver, and to observe its effect in grafting.

METHODSXeno-ADM was prepared with 0. 25% trypsin and 0. 5% triton X-100 , and then it was immersed in 2 g/L silver nitrate solution to prepare xeno-ADM incorporated with silver. The bacterial inhibitory effect of two kinds of xeno-ADM on burn wound was determined, and the histological characteristic of the wounds was observed with optical microscope, transmission electron microscope and scanning electron microscope. The Ag+ content in the xeno-ADM incorporated with silver was measured with atomic absorption spectrometer. Twenty-seven rabbits with full-thickness skin defects on the back were randomly divided into three groups, i. e. split-thickness skin autograft only( group A, n = 9) , xeno-ADM with overlying split-thickness skin autograft( group B, n = 9) , xeno-ADM incorporated with silver with overlying split-thickness skin autograft ( group C, n = 9). The skin specimens from grafted area in each group were harvested at 2,4 and 6 post-operation weeks( POW) and examined under light microscope and transmission electron microscope. The condition of the graft, the contraction degree of the grafts and the historical changes in grafting area were observed at 2,4,6 POW. The survival rate of the grafts was calculated and the proliferative activity of the lymphocyte in each group was determined at 2 POW.

RESULTS1. Compared with xeno-ADM, the anti-bacterial effect of xeno-ADM incorporated with silver was much better ( P < 0. 05). No epidermis was seen in both types of xenografts ,and the collagen fibers were even in size and arranged regularly, with no obvious degeneration, and the dermis was also devoid of cells and cellular components. The Ag + content in xeno-ADM incorporated with silver measured (2. 7+/-0. 7) mg/g. 2. The grafts in B and C groups presented similar color to that of normal skin at 6 POW, and it was smooth, with fine texture and no scarring. The collagen fibers was arranged regularly, and conjunction between epidermis and dermis, the structure of basal cell desmosome and semi-desmosome were well reconstructed. The grafts in A group was in dark red color, with obvious contraction, and easily broken. The contraction rate in A group at 2,4 and 6 POW were obviously higher than those in B and C groups( P < 0. 05), while no obvious difference was observed between B and C groups. ( P >0. 05). The overall survival rate of the grafts in C group at 2 POW was 91.7% , which was evidently higher than that in A (77.8%) and B (80. 6% ) groups. The lymphocyte proliferative activity exhibited no difference among A, B and C groups( P >0.05).

CONCLUSIONThe xeno-ADM incorporated with silver has good anti-bacterial effect. In addition, it preserves the basic tissue structure and integral collagen fiber scaffold, without cells to induce rejection, so that it can be used as an ideal dermal substitute.

Animals ; Dermis ; transplantation ; ultrastructure ; Rabbits ; Silver ; therapeutic use ; Skin Transplantation ; Skin, Artificial ; Swine ; Transplantation, Heterologous ; Wound Healing

OBJECTIVETo explore possible mechanism of electroacupuncture (EA) for regulating immune function in anxiety disorder (AD) rats by observing the effect of acupuncture on the histology of thymus and expressions of atrial natriuretic peptide (ANP) and natriuretic peptide receptor type A (NPR- A) in thymus.

METHODSTotally 34 SD healthy rats were randomly divided into the blank control group (n = 10), the model group (n = 12), the EA group (n = 12). Anxiety model was established in rats of the model group and the EA group by using chronic unpredictable stress (CUS) stimulation. EA (15/25 Hz) at Neiguan (PC6) and Shenmen (HT7) was performed in the EA group, with 15-min needle retaining, once every other day, 15 days in total. Needle was fixed at same acupoints for 15 min without electric stimulus in the other two groups. Anxiety-like behavior was measured by elevated plus-maze (EPM) test. Pathological changes of thymus tissue were observed by optical microscope. Expressions of ANP and NPR-A in thymus were measured by immunohistochemical assay.

RESULTSThe thymus tissue in the model group was severely atrophied, with unclear structure of thymic lobules, unclear margin of thymic medulla, loosely arranged lymphocytes ,and obviously enlarged volume of thymic corpuscle. The thymus tissue in the EA group was mildly atrophied, with existent structure of thymic lobules, clear margin of thymic medulla, densely arranged lymphocytes in cortical region, and widened medullary area. Com- pared with the blank control group, the percentage of open-arms entries (OE%) in the total QE times ob- viously decreased in the model group (P < 0.05), ANP expression obviously increased (P < 0.05), and NPR-A expression obviously decreased (P < 0.01). Compared with the model group, OE% was obviously elevated (P < 0.05), ANP expression obviously decreased (P < 0.05), and NPR-A expression obviously increased (P < 0.01) in the EA group.

CONCLUSIONEA not only could reduce anxiety of rats, but also could improve chronic stress induced thymus injury through intervening synthesis and secretion of ANP, as well as the expression of NPR-A (a specific receptor of ANP).

Acupuncture Points ; Animals ; Anxiety Disorders ; therapy ; Atrial Natriuretic Factor ; metabolism ; Electroacupuncture ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Receptors, Atrial Natriuretic Factor ; metabolism ; Thymus Gland ; pathology

OBJECTIVETo observe the effects of ganglioside GM1 on reduction of brain edema and amelioration of cerebral metabolism after traumatic brain injury (TBI).

METHODSAn acute experimental closed TBI model in rats was induced by a fluid-percussion brain injury model. At five and sixty minutes after TBI, the animals were intraperitoneally injected by ganglioside GM1 (30 mg/kg) or the same volume of saline. At the 6th hour after TBI, effects of ganglioside GM1 or saline on changes of mean arterial pressure (MAP), contents of water, lactic acid (LA) and lipid peroxidation (LPO) in the injured cerebral tissues were observed.

RESULTSAfter TBI, MAP decreased and contents of water, LA and LPO increased in brain injury group; however, MAP was back to normal levels and contents of water, LA and LPO decreased in ganglioside GM1 treated group, compared with those in brain injury group (P < 0.05). No significant difference between the saline treated group and the brain injury group (P > 0.05) was observed.

CONCLUSIONSGanglioside GM1 does have obvious neuroprotective effect on early TBI.

Animals ; Brain ; metabolism ; Brain Edema ; etiology ; prevention & control ; Brain Injuries ; complications ; metabolism ; Disease Models, Animal ; Hexosyltransferases ; therapeutic use ; Lactic Acid ; analysis ; Lipid Peroxidation ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo explore the benefit of neoadjuvant chemotherapy in advanced gastric cancer patients treated by laparoscopy.

METHODSFifteen patients with histologically proved gastric adenocarcinomas (stages II(, III(, IIII(M(0)) were treated with FOLFOX7 neoadjuvant chemotherapy followed by laparoscopy between June 2005 and March 2007( trial group). Thirty patients were assigned to the control group with only laparoscopic treatment in the same period. The clinicopathological data were compared between two groups.

RESULTSAll the patients in trial group accepted four cycles of preoperative chemotherapy and the toxicity was less than grade 3. Two of them achieved complete response, 10 achieved partial response and 3 kept stable disease. Ten patients of trial group underwent laparoscopic-assisted radical gastrectomy. The rates of R(0)-resection(80.0%) and pN(0) (60.0%) in trial group were significantly higher than those in control group(46.7% and 20.0%), while the rate of positive lymph node 11.0%(34/309) was significantly lower than that of control group 23.8%(142/596). The operation time and postoperative complication were similar in two groups.

CONCLUSIONSAdvanced gastric cancer after neoadjuvant chemotherapy can be down-regulated in the stage, increase the rate of R(0)-resection, diminish the infiltration extent of tumor, decrease the metastasis of lymph node, and increase the possibility of laparoscopic radical gastrectomy.

Adult ; Aged ; Chemotherapy, Adjuvant ; Combined Modality Therapy ; Female ; Gastrectomy ; methods ; Humans ; Laparoscopy ; Male ; Middle Aged ; Neoadjuvant Therapy ; Neoplasm Staging ; Stomach Neoplasms ; pathology ; therapy ; Treatment Outcome