Objective To understand the gene characteristics of envelope region of human T lymphotropic virus type Ⅰ(HTLV Ⅰ)from Shantou region of China. Methods The gene of proviral envelope region of HTLV Ⅰ Shantou strain (named HTLV Ⅰ WHP)was amplified by PCR,using 4 designed primers,and then was sequenced,meanwhile it was compared with that of various HTLV Ⅰ representative strains from all around the world,and subsequently it was analyzed to construct its phylogenetic tree.Results The nucleotide sequence of complete envelope region of HTLV Ⅰ WHP provirus we have obtained was 1466 bp.There no deletion and insertion in the deducted amino acid sequence.The results of phylogenetic tree analysis showed that the HTLV Ⅰ WHP strain was most closed to some of the strains from Japan and Caribbean,and like the latter,belonged to the subtypea of cosmopolitan group.Conclusion The HTLV Ⅰ strains either from the coastal region of Southeast China or from Japan,Caribbean and so on have the common origin of evolution.

Objective cyclin D1 gene plays a significant role in regulating cell cycle progression.Suppression of cyclin D1 protcin expression can effect on cellular proliferation,distribution of cell cycle and apoptosis.This study was to determine whether this effect also existed in chronic leukemia ceil line K562 by inhibiting the expression of cyclin D1 protein through RNA interference in vetro.Methods Plasmid vectors expressing small hairpin RNA (shRNA) targeting at cyclin D1 gene were constructed and transfected into K562 cells by chitosan,cyclin D1 protein was examined by using Western blot analysis.Inhibition of cellular proliferation was evaluated hy soft agar colony formation assay.The cell cycle and apoptosis were determined by flow cytometry.Results Expression of cyclin D1 protein was markedly down-regulated and capability of colony formation was suppressed after transfection with pshRNA-419 and pshRNA-575 at 48h.Down-regulation of cyclin D1 protein could effect on distribution of cell cycle arrested at G_0/G_1 phase and markedly induce apoptosis of K562 cells.But there had no above biological effects ob- served after transfection with blank vector and control vector of m-pshRNA-790.Conclusion Down-regulation of cyclin D1 expression can inhibit growth of K562 cells,and effect on distribution of cell cycle arrested at G_0/G_1 phase.The primary results suggest that cyclin D1 gene might serve as an effective target for the treatment of leukemia.

Transforming growth factor-?_1 (TGF-?_) mRNA or protein expression in renal cortex of diabetic rats was assessed by real-time quantitative RT-PCR with SYBR Green,immunohistochemistry or Western blot.After melatonin treatment,the expressions of TGF-?_1 mRNA and protein were decreased,suggesting that beneficial effect of melatonin may result from its antioxidative property and inhibiting TGF-?_1 expressions.

Objective To apply autoimplantation technique in the treatment of verruca plana, and to investigate the mechanisms of it. Methods The changes of T cell subsets and IL-2 level in the peripheral blood of the patients with verruca plana, in conjunction with histopathological and immunohistochemical features of verruca plana tissue at reactive stage were studied by APAAP and radioimmunoassay, respectively. The tissue specimens were studied by H.E stain and immunohistochemical techniques. Results Significantly decreased CD4+ cell numbers, CD4+/CD8+ ratio and IL-2 level were found before treatment, compared with those in healthy controls (P 0.05). Lymphocytic infiltration, epidermal edema and dissolution were shown in the histopathological study. There were CD45RO+, CD6+, CD4+ and CD8+ cells in the lymphocytic infiltration, but no CD20+ and Mac387- cells. Langerhans cells with positive S-100 protein were observed in basal layer of the epidermis and reaction area. Conclusions T cell-mediated immune responses could be improved in autoimplantation, the warts are rejected mainly by of CD8+ subset cytotoxicity.

Objective To evaluate the effectiveness of one-stage debridement for cervical tuberculosis at different segments.Methods Clinical data of 54 patients (male 20,female 34) with cervical tuberculosis treated by one-stage debridement from Jan 1998 to Dec 2011 were reviewed retrospectively.The average age of these patients was 45.4 years (range,26-75 years).Among them,12 cases were involved in single level (C2 1 case,C4 2 cases,C5 3 cases,C6 4 cases,C7 2 cases); 36 cases in the adjacent two levels (C1,2 3 cases,C2,3 2 cases,C3,4 5 cases,C4,5 6 cases,C5,6 14 cases,C6,7 5 cases,C7T1 1 case); 5 cases in three levels(C4 6 2 cases,C5-7 2 cases,C3,5,6 1 case)and 1 case in four levels (C4-7).Five cases were involved in other spinal levels (T6 1 case,T 3 cases,L3,4 1 case).Comorbidity of cervical ossification of the posterior longitudinal ligament was found in 1 case.Before surgery,the mean VAS and JOA scores were 5.9 (range,4-9) and 10.5 (range,7-12) respectively and the mean Cobb angle of lesion segment was 26.7°± 9.1°.All cases underwent regular anti-TB treatment preoperatively,and surgical treatment were performed when blood sedimentation (ESR) was lower than 50 mm/1 h.According to the segmental involvement,different surgical approaches were performed including anterior debridement with anterior or anterior-posterior internal fixation and fusion,submandibular approach debridement with posterior occipital cervical fusion or atlantoaxial fusion.Results Mean follow-up duration was 27.3 months (range,13-52 months).Symptoms were improved significantly in all cases.Mean time of union was 3.2 months (range,2-4 months).At the last follow-up,the mean VAS and JOA scores were 5.9 (range,4-9)and 10.5 (range,7-12) respectively,and the mean Cobb angle of lesion segment was 6.8°.Regular anti-TB treatment was performed postoperatively for 18 to 20 months.Intraoperative esophageal injury was found in one case of upper cervical tuberculosis which was cured uneventfully after gastrointestinal tubation for 1 week.No cervical tuberculosis recurrence,graft loosening or pseudarthrosis was found in follow-up.Conclusion With preoperative anti-TB treatment,cervical tuberculosis can be treated by one-stage foci debridement according to the segmental involvement and deformity.Postoperative regular anti-TB treatment is a crucial factor for the final recovery of cervical tuberculosis.

AIM:To study the effect and the molecular mechanism of CDX 2 over-expression on the prolifera-tion, growth and cell cycle of human gastric cancer cell line SGC-7901.METHODS:The SGC-7901 cells in LV-CDX2-GFP group were transfected with the recombinant lentivirus vector LV-CDX2-GFP, the cells in LV-GFP group were trans-fected with the negative control lentiviral vector for the negative control , and the cells in blank control group were without any treatment.The cell proliferation was detected by CCK-8 assay.The cell cycle distribution was analyzed by flow cytome-try.The expression of CDX2, Bax, Bcl-2, cyclin D1 and survivin was determined by semi-quantitative RT-PCR and Wes-tern blotting .RESULTS:Compared with LV-GFP group and blank control group , the proliferation activity of the SGC-7901 cells was significantly lower (P<0.05), the G0/G1 phase proportion increased (P<0.05), the mRNA and protein levels of Bcl-2, cyclin D1 and survivin were reduced (P<0.05), and the mRNA and protein levels of Bax were up-regula-ted (P<0.05) in LV-CDX2-GFP group.No statistically significant difference of the above indexes was observed (P>0.05) between LV-GFP group and blank control group .CONCLUSION:Over-expression of CDX2 mediated by lentivirus inhibits the proliferation and growth of human gastric cancer SGC-7901 cells and arrestes the cell cycle at G 0/G1 phase, which may be related to down-regulation of Bcl-2, cyclin D1 and survivin and up-regulation of Bax .

OBJECTIVETo study the differences in the toxicity of vinegar-processed Kansui Radix on normal and cancerous ascites model rats.

METHODNormal and cancerous ascites model rats were taken as the research objects and orally administered with different doses of vinegar-processed Kansui Radix for 7 d. Pathological sections were prepared to observe the damages in liver, stomach, intestinal tissues in rats and detect the impacts on serum, liver, stomach and intestinal tissues and the oxidative damage index.

RESULTCompared with the blank group, all of normal administration groups and model groups showed significant damages in liver, stomach and intestinal tissues. Compared with the model groups, all of normal administration groups revealed notable alleviation in damages. Compared with the blank group, the model groups showed significant increases in AST, ALT and MDA in serum and liver (P < 0.01) and a significant decrease in GSH in serum and liver, stomach, intestinal tissues (P < 0.01). Compared with the blank group, the results showed significant decreases in ALT, AST in serum and ALT in liver in model low, medium and high dose groups and AST activity in liver tissues in the normal high dose group (P < 0.05, P < 0.01); significant decreases in GSH in serum and stomach tissues in normal low, medium and high dose groups and GSH content in liver and intestinal tissues in normal medium and high dose groups (P < 0.05, P < 0.01); notable rises in MDA in liver tissues in normal low, medium and high dose groups and MDA content in serum and stomach and intestinal tissues in normal medium and high dose groups (P < 0.05, P < 0.01). Compared with model groups, data revealed significant decreases in ALT, AST in serum in model low, medium and high dose groups, AST in liver tissues of model medium and high dose groups and ALT activity in liver in the model high dose group (P < 0.05, P < 0.01); significant increases in GSH content in serum and stomach tissues of model low, medium and high dose groups, GSH in liver tissues in model medium and high dose groups and GSH in intestinal tissues in the high dose groups (P < 0.05, P < 0.01); and notable declines in MDA content in serum in model low, medium and high dose groups, MDA in liver tissues of model medium and high dose groups and MDA in stomach and intestinal tissues the high dose group (P < 0.05, P < 0.01).

CONCLUSIONAccording to the study, vinegar-processed Kansui Radix showed a significant lower toxicity liver, stomach, and intestines of cancerous ascites model rats, which provided a basis for clinical safe application of vinegar-processed Kansui Radix based on symptom-based prescription theory.

Acetic Acid ; chemistry ; Animals ; Chemistry, Pharmaceutical ; methods ; Drug Prescriptions ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; toxicity ; Euphorbia ; chemistry ; toxicity ; Intestines ; drug effects ; pathology ; Liver ; drug effects ; metabolism ; pathology ; Male ; Neoplasms ; drug therapy ; metabolism ; pathology ; Oxidative Stress ; drug effects ; Plant Roots ; chemistry ; toxicity ; Rats ; Rats, Sprague-Dawley

Poly(ADP-ribose)polymerase-1 (PARP-1) plays a significant role in the DNA repair process by catalyzing the transfer of ADP-ribose from NAD+ to its receptors. It is a promising anticancer drug target and many PARP-1 inhibitors have been developed and used in the clinical trial. In this work, a series of 3-(2-oxo-2-substituted acetamido)benzamides have been synthesized and their inhibitory activities against PARP-1 were evaluated. Of all the tested compounds, six compounds displayed inhibitory activities with IC50 values ranging from 0.23 to 5.78 µmol.L-1 . The binding pose of compound 5a was predicted using molecular docking to facilitate further structural modification.
Antineoplastic Agents ; Benzamides ; chemistry ; DNA Repair ; Drug Design ; Humans ; Molecular Docking Simulation ; Poly(ADP-ribose) Polymerase Inhibitors ; chemical synthesis ; chemistry ; Poly(ADP-ribose) Polymerases

To study the function of expelling water retention with drastic purgative of different polarities of Kansui Radix stir-baked with vinegar on the cancerous ascites model rats, the furosemide was taken as positive control drug, and the cancerous ascites model rats were respectively orally administered with different polarities of Kansui Radix stir-baked with vinegar for 7 d. The amount of urine and ascites, the level of urinary sodium, potassium, chloride ion and pH, and the content of PRL1, AII, ALD in serum were investigated. Compared with model groups, ethyl acetate extract group showed a decreasing trend in ascites; the amount of urine of showed a significant increase (P < 0.05); the level of urinary sodium, potassium, chloride ion (P < 0.05, P < 0.01), pH (P < 0.05), and the content of PRL1, AII, ALD in serum all showed a significant decrease (P < 0.01). The effects of petroleum ether extract and n-butanol extract were weaker than that of ethyl acetate extract. The water exact was the weakest. The results showed that ethyl acetate extract is the active part of Kansui Radix stir-baked with vinegar on the function of expelling water retention with drastic purgative on the cancerous ascites model rats, alleviating the water-electrolyte disorder and body fluid acid-base imbalance, regulating the renin angiotensin aldosterone system.
Animals ; Ascites ; drug therapy ; metabolism ; Cathartics ; administration & dosage ; chemistry ; isolation & purification ; Chemistry, Pharmaceutical ; Drugs, Chinese Herbal ; administration & dosage ; chemistry ; isolation & purification ; Euphorbia ; chemistry ; Humans ; Male ; Plant Roots ; chemistry ; Potassium ; urine ; Rats ; Rats, Sprague-Dawley ; Sodium ; urine ; Water ; metabolism

Objective As brucellosis epidemic is constantly rising in Harbin in recent years,we analyze the epidemic and surveillance results at municipal surveillance spots of brucellosis from 2008 to 2012,to find out the epidemic characteristics of Harbin brucellosis,and to provide scientific evidences for development of countermeasures.Methods Brucellosis surveillance data which were collected from the National Diseases Surveillance Information Management System from 2008 to 2010,the epidemic characteristics of Harbin brucellosis (including regional,time and population distribution) and the municipal surveillance results in Harbin (including epidemiological investigation and serological surveillance) were analyzed.Results A total of 1348 cases of brucellosis were reported in Harbin from 2008 to 2012,and the incidence of brucellosis increased from 1.79 per 100 000 to 4.62 per 100 000; in addition to Pingfang District (2008-2011) and Fangzheng County(2009 and 2011),all eighteen districts (counties or cities) in Harbin had reported epidemic in the past five years,the highest incidence was in Yilan (382 cases),and the incidence was significantly increased in Shuangcheng(111 cases) and Binxian(73 cases) in 2012; the time of onset focused on March to July,which accounted for 62.54％(843/1348) of annual incidence; age distribution,mainly young adults aged 30 to 60(71.59％,965/1348); gender distribution predominantly male (75.45％,1017/1348) ; occupational distribution farmers(84.87％,1144/1348),and the number of infected students and house workers were also high in the past five years(4.23％,57/1348 and 2.52％,34/1348).In the municipal surveillance spots from 2008 to 2012,13 010 cases were surveyed,of which 2695 cases received serological test,the positive rate was 3.93％ (106/2695),and the positive rate was increasing year by year.Conclusions The incidence of Harbin brucellosis is increasing year by year,onset season mainly in the spring and summer,young men with a high incidence,and farmers are main professional people.Brucellosis has also occurred among students,domestic workers,which should be vigilant.Therefore,we should further strengthen surveillance,timely analyze and report the epidemic,and provide a scientific basis to ensure each measure of eliminating the sources of infection put in place,vigorously develop health education,strengthen inter-departments cooperation,and control the spread of epidemic.