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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Iranian Journal of Immunology
- نوع مقاله: Journal Article
- کلمات کلیدی: ELISA,Serodiagnosis,Hydatidosis,Native Antigen,CCIEP,Antigen B
- چکیده:
- چکیده انگلیسی: Background: Hydatidosis is one of the cosmopolitan parasitic zoonoses caused by the larval stage of Echinococcus granulosus. Diagnosis of hydatidosis is still an unresolved problem. Serological tests using crude antigens for diagnosis of E. granulosus are sensi-tive, however their specificity are not satisfactory. Therefore, WHO recommended spe-cific serological methods using specific antigens, specially native AgB for proper diagno-sis.
Objectives: This study was designed to evaluate the ELISA and counter current im-munoelectrophresis (CCIEP) method using native antigen B (Ag B) for serodiagnosis of human hydatidosis in Fars Province, Iran, an endemic area for this parasitic disease.
Methods: Native AgB was purified from sheep hydatid fluid. Serum samples obtained from 40 pathologically confirmed cases of hydatidosis along with samples from patients with fascioliasis, toxocariasis, taeniasis and cancer patients and sera from healthy indi-viduals were tested by ELISA using native antigen B or tested by countercurrent immu-noelectrophresis (CCIEP) using crude sheep hydatid cyst fluid.
Results: Sensitivity of the ELISA system was determined to be 92.5% and the specificity was found to be 97.3%. Positive and negative predictive values of the system were 92.5% and 97.3%, respec-tively. For countercurrent immunoelectrophresis the sensitivity of the assay was 97.5% and its specificity was 58.18%. This ELISA system is much more specific in detecting anti hydatid cyst antibody than CCIEP, while CCIEP is more sensitive in detecting anti hydatid cyst antibody.
Conclusion: The new ELISA system using native antigen B is a suitable method and preferable to CCIEP for immunodiagnosis of human hydatidosis.- انتشار مقاله: 17-05-1395
- نویسندگان: Seyed Mahmoud Sadjjadi,Hassan Abidi,Bahador Sarkari,Ahmad Izadpanah,Sakineh Kazemian
- مشاهده
- جایگاه : پژوهشی
- مجله: Annals of Colorectal Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Disease free survival,Rectal Cancer,Adjuvant chemoradiation,Overall Survival
- چکیده:
- چکیده انگلیسی: Abstract
Background: Colorectal cancer causes many deaths worldwide and rectal cancer includes one-third of them. Surgical mesorectal excision along with preoperative neoadjuvant chemoradiotherapy is known as the standard treatment for rectal cancer. However, inaccurate preoperative staging is a main concern which leads to large number of patients not being treated with neoadjuvant therapy. Selection of the best treatment approach for these patients is controversial. Although significant better survival was observed is patients who received postoperative adjuvant chemoradiation compared with patients who treated with surgery alone, other studies did not find such results. Due to these contradictory results, this study was designed to further evaluate the survival outcomes in rectal cancer patients who received adjuvant chemoradiotherapy without neoadjuvant therapy. Methods: Totally 197 rectal cancer patients who received adjuvant chemoradiation were included in this study. The demographic and clinico-pathological characteristics of the patients were evaluated by statistical analysis. Results: Based on the univariate cox regression, poor disease free survival (DFS) was significantly associated with male sex and T3 stage. Poor overall survival (OS) was also associated with stage II/III, T3/T4, NI/NII, grade II/III, positive node number (> 3), perineural invasion, lymphovascular invasion, and margin involvement. According to the multivariate cox regression, independent predictive factors for DFS were T3 andT4 stage, and for OS were also T3/ T4 stage, grade II/ III and lymphovascular invasion. Conclusions: Taken together, obtained results indicated that combined adjuvant chemoradiation contributes to improve survival outcomes in the rectal cancer patients who did not received neoadjuvant therapy.- انتشار مقاله: 06-09-1398
- نویسندگان: Ahmad Izadpanah,Seyed Vahid Hosseini,Maytham Hameed Al-Qanbar,Mozhdeh Zamani,Behnam Kadkhodaei
- مشاهده
- جایگاه : پژوهشی
- مجله: Annals of Colorectal Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Anal sphincter,Healing,Platelet-Rich plasma,sphincterotomy,Sphincteroplasty
- چکیده:
- چکیده انگلیسی: Background: Inability to manage of stool release, fecal incontinence, is a condition with sever negative effects on the patients’ quality of life. Use of platelet-rich plasma in healing of anal sphincter might improve outcomes. The current study investigated the healing effects of PRP application after surgical repair of sphincter in rabbits as an animal model for human studies.
Methods: Twenty-four New Zealand rabbits were randomly allocated into 4 groups based on the time of healing at one and three weeks after sphincteroplasty and using of PRP. Sphincterotomy and then sphincteroplasty were performed in all animals and autologous PRP was prepared and used as dose as 0.5 ml per animal. The healing scores of sphincter were compared between four groups using histological scoring system.
Results: The histological healing score in PRP used group was significantly higher than not PRP used group after one week (18.6 ± 0.8 vs. 13.0 ± 1.8 respectively, P = 0.01) but no significant difference was detected between healing score of PRP used and not PRP used groups after three weeks (19.0 ± 0.0 vs. 18.5 ± 0.8 respectively, P = 0.17).
Conclusion: Our findings indicated that although PRP had an accelerator role in wound healing of sphincter repair, but it has not significant effects over time especially after 3 weeks.- انتشار مقاله: 20-08-1398
- نویسندگان: Ahmad Izadpanah,Habibollah Nikzad Jamnani,Alireza Safarpour,Ahad Izadpanah,Seyed Mohammad Kazem Tadayon
- مشاهده