Parasites, Hosts and Diseases

"Joung-Ho Moon"

Brief Communications

Resistance to Toxoplasma gondii Infection in Mice Treated with Silk Protein by Enhanced Immune Responses: Joung-Ho Moon, Kyoung-Ho Pyo, Bong-Kwang Jung, Hyang Sook Chun, Jong-Yil Chai, Eun-Hee Shin; Korean J Parasitol 2011;49(3):303-308.
Published online September 30, 2011; DOI: https://doi.org/10.3347/kjp.2011.49.3.303

Abstract
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This study investigated whether elevated host immune capacity can inhibit T. gondii infection. For this purpose, we used silk protein extracted from Bombyx mori cocoons as a natural supplement to augment immune capacity. After silk protein administration to BALB/c mice for 6 weeks, ratios of T lymphocytes (CD4⁺ and CD8⁺ T-cells) and splenocyte proliferative capacities in response to Con A or T. gondii lysate antigen (TLA) were increased. Of various cytokines, which regulate immune systems, Th1 cytokines, such as IFN-γ, IL-2, and IL-12, were obviously increased in splenocyte primary cell cultures. Furthermore, the survival of T. gondii (RH strain)-infected mice increased from 2 days to 5 or more days. In a state of immunosuppression induced by methylprednisolone acetate, silk protein-administered mice were resistant to reduction in T-lymphocyte (CD4⁺ and CD8⁺ T-cells) numbers and the splenocyte proliferative capacity induced by Con A or TLA with a statistical significance. Taken together, our results suggest that silk protein augments immune capacity in mice and the increased cellular immunity by silk protein administration increases host protection against acute T. gondii infection.

Citations

Citations to this article as recorded by

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Pharmaceutical Biology.2019; 57(1): 369. CrossRef
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Sun-Hee Jang, Mi-Sun Oh, Hyang-Im Baek, Ki-Chan Ha, Jeong-Yong Lee, Yong-Suk Jang
Immune Network.2018;[Epub] CrossRef
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ACS Biomaterials Science & Engineering.2017; 3(2): 126. CrossRef
STAT6 Expression and IL-13 Production in Association with Goblet Cell Hyperplasia and Worm Expulsion of Gymnophalloides seoi from C57BL/6 Mice
Jin-Joo Lee, Donghee Kim, Kyoung-Ho Pyo, Min-Ki Kim, Hyo-Jin Kim, Jong-Yil Chai, Eun-Hee Shin
The Korean Journal of Parasitology.2013; 51(5): 589. CrossRef

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PCR Diagnosis of Entamoeba histolytica Cysts in Stool Samples: Joung-Ho Moon, Shin-Hyeong Cho, Jae-Ran Yu, Won-Ja Lee, Hyeng-Il Cheun; Korean J Parasitol 2011;49(3):281-284.
Published online September 30, 2011; DOI: https://doi.org/10.3347/kjp.2011.49.3.281

Abstract
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Amebiasis is a protozoan disease caused by Entamoeba histolytica and a potential health threat in areas where sanitation and hygiene are inappropriate. Highly sensitive PCR methods for detection of E. histolytica in clinical and environmental samples are extremely useful to control amebiasis and to promote public health. The present study compared several primer sets for small subunit (SSU) rDNA and histone genes of E. histolytica cysts. A 246 bp of the SSU rDNA gene of pure cysts contained in phosphate-buffered saline (PBS) and in stool samples was successfully amplified by nested PCR, using the 1,147-246 bp primer set, of the primary PCR products which were pre-amplified using the 1,147 bp primer as the template. The detection limit of the nested PCR using the 1,147-246 primer set was 10 cysts in both groups (PBS and stool samples). The PCR to detect histone gene showed negative results. We propose that the nested PCR technique to detect SSU rDNA can be used as a highly sensitive genetic method to detect E. histolytica cysts in stool samples.

Citations

Citations to this article as recorded by

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