PMID- 26070945 OWN - NLM STAT- MEDLINE DCOM- 20160310 LR - 20181113 IS - 1756-3305 (Electronic) IS - 1756-3305 (Linking) VI - 8 DP - 2015 Jun 14 TI - L-Arginine supplementation in mice enhances NO production in spleen cells and inhibits Plasmodium yoelii transmission in mosquitoes. PG - 326 LID - 10.1186/s13071-015-0940-0 [doi] LID - 326 AB - BACKGROUND: The life cycle of Plasmodium is complex, requiring invasion of two different hosts, humans and mosquitoes. In humans, initiation of an effective Th1 response during early infection is critical for the control of parasite multiplication. In mosquitoes, inhibition of the development of sexual-stage parasites interrupts the parasite transmission. In this study, we aim to investigate whether dietary supplementation of L-arginine (L-Arg) in mice affects Plasmodium yoelii 17XL (Py17XL) transmission in mosquitoes. METHODS: BALB/c mice were orally administered with 1.5 mg/g L-Arg daily for 7 days and infected with Py17XL. The mRNA levels of inducible nitric oxide synthase (iNOS) and arginase 1 in spleen cells were determined by real-time RT-PCR. The amount of nitric oxide (NO) released by spleen cells in vitro was determined by the Griess method. The effect of L-Arg supplementation on subsequent development of P. yoelii gametocytes was evaluated by an in vitro ookinete culture assay and mosquito feeding assay. RESULTS: Pretreatment of mice with L-Arg significantly increased the transcript level of iNOS in spleen cells and the amount of NO synthesized. Dietary L-Arg supplementation also significantly reduced the number of zygotes and ookinetes formed during in vitro culture and the number of oocysts formed on mosquito midguts after blood feeding. CONCLUSIONS: L-Arg enhances host immunity against blood-stage parasites as well as suppressing subsequent parasite development in mosquitoes. L-Arg as an inexpensive and safe supplement may be used as a novel adjunct treatment against malarial infection. FAU - Zheng, Li AU - Zheng L AD - Department of Immunology, College of Basic Medical Sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, P. R. China. zhengli@mail.cmu.edu.cn. FAU - Pan, Yanyan AU - Pan Y AD - Department of Immunology, College of Basic Medical Sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, P. R. China. 66848464@qq.com. FAU - Feng, Yonghui AU - Feng Y AD - Department of Immunology, College of Basic Medical Sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, P. R. China. 156815643@qq.com. FAU - Cui, Liwang AU - Cui L AD - Department of Immunology, College of Basic Medical Sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, P. R. China. luc2@psu.edu. AD - Department of Entomology, Pennsylvania State University, University Park, PA, USA. luc2@psu.edu. FAU - Cao, Yaming AU - Cao Y AD - Department of Immunology, College of Basic Medical Sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, P. R. China. ymcao@mail.cmu.edu.cn. LA - eng GR - R01 AI099611/AI/NIAID NIH HHS/United States GR - U19 AI089672/AI/NIAID NIH HHS/United States GR - R01AI099611/AI/NIAID NIH HHS/United States GR - U19AI089672/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20150614 PL - England TA - Parasit Vectors JT - Parasites & vectors JID - 101462774 RN - 31C4KY9ESH (Nitric Oxide) RN - 94ZLA3W45F (Arginine) SB - IM MH - Animals MH - Anopheles/parasitology/*physiology MH - Arginine/*metabolism MH - Female MH - Humans MH - Insect Vectors/parasitology/*physiology MH - Malaria/*metabolism/parasitology/transmission MH - Male MH - Mice MH - Mice, Inbred BALB C MH - Nitric Oxide/*metabolism MH - Plasmodium yoelii/growth & development/*physiology MH - Spleen/*metabolism PMC - PMC4468801 EDAT- 2015/06/14 06:00 MHDA- 2016/03/11 06:00 PMCR- 2015/06/14 CRDT- 2015/06/14 06:00 PHST- 2015/04/08 00:00 [received] PHST- 2015/06/05 00:00 [accepted] PHST- 2015/06/14 06:00 [entrez] PHST- 2015/06/14 06:00 [pubmed] PHST- 2016/03/11 06:00 [medline] PHST- 2015/06/14 00:00 [pmc-release] AID - 10.1186/s13071-015-0940-0 [pii] AID - 940 [pii] AID - 10.1186/s13071-015-0940-0 [doi] PST - epublish SO - Parasit Vectors. 2015 Jun 14;8:326. doi: 10.1186/s13071-015-0940-0.