Evaluation of Immunogenic Effect of Toxoplasma gondii RecombinantSAG-1 Antigen with Propranolol as Adjuvant in BALB/c Mice
Message:
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Purpose

Propranolol as a novel adjuvant, was used to evaluate the immunogenic effect of threedoses of recombinant SAG-1 (rSAG-1) antigen of Toxoplasma gondii in BALB/c mice for findingthe optimal dose, and was compared with efficacy of tachyzoite lysate antigen (TLA).

Methods

Eight different groups of 15 BALB/c mice received different volumes of theimmunogenic material (three doses of r SAG-1 and one dose of TLA antigens), with or withoutpropranolol adjuvant, subcutaneously. The control group mice received only PBS. Three weeksafter the last immunization, the serum levels of IgG2a, IgG1 and IgG total antibodies againstTLA, splenic interleukin-5 (IL-5) and Interferon-gamma (IFN-γ) (produced against TLA) and thesplenic lymphocyte proliferation after adding TLA were measured to evaluate humoral andcellular immune responses. Challenge test was performed by subcutaneously injection of 1000alive and active tachyzoites in to five mice per each group and survival days for each group ofmice were recorded.

Results

The mice group that received propranolol adjuvant and 20 μg of r SAG-1 antigenper dose of injection showed significantly more IFN-γ production, more proliferation ofsplenic lymphocytes and higher anti-TLA-specific IgG2a production (three main indexes forcell mediated immunity) in comparison with other groups. Moreover, in the challenge test,this group of mice had a significantly increased survival time, indicating the positive effect ofpropranolol in the more stimulating of cellular immunity that is necessary for toxoplasmosisprevention or suppress.

Conclusion

Our results showed that T. gondii rSAG-1 antigen in combination with propranololas adjuvant (which can induce Th1 related responses) are good candidates for further study toa vaccine design.

Language:
English
Published:
Advanced Pharmaceutical Bulletin, Volume:9 Issue: 4, Oct 2019
Pages:
632 to 639
magiran.com/p2047621  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!