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Parchim NF, Wang W, Iriyama T, Ashimi OA, Siddiqui AH, Blackwell S, Sibai B, Kellems RE, Xia Y. Neurokinin 3 receptor and phosphocholine transferase: missing factors for pathogenesis of C-reactive protein in preeclampsia. Hypertension 2014; 65:430-9. [PMID: 25452470 DOI: 10.1161/hypertensionaha.114.04439] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
C-reactive protein (CRP), an innate immune mediator, is elevated in the circulation before symptoms in patients with preeclampsia, a severe hypertensive pregnancy disorder with high mortality and morbidity. However, the specific sources underlying increased CRP and the role of elevated CRP in preeclampsia are undefined. Here, we report that circulating CRP levels are significantly increased in a large cohort of normotensive pregnant individuals when compared with nulligravid women and is further increased in patients with preeclampsia. These findings led us to discover further that placental syncytiotrophoblasts are previously unrecognized cellular sources of CRP and underlie elevated CRP in normotensive pregnant women and the additional increase in patients with preeclampsia. Next, we demonstrated that injection of CRP induces preeclampsia features, including hypertension (157 mm Hg CRP treated versus 119 mm Hg control), proteinuria (35.0 mg/μg CRP treated versus 14.1 mg/μg control), kidney, and placental damage and increased levels of sFlt-1 in pregnant mice but not in nonpregnant mice. Our study implicates that phosphocholine transferase, a placental-specific enzyme post-translationally modifying neurokinin B, is essential for the pathogenic role of CRP in preeclampsia through activation of the neurokinin 3 receptor. Overall, our studies have provided significant new insight on the pathogenic role of CRP in preeclampsia and highlighted innovative therapeutic strategies.
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Affiliation(s)
- Nicholas F Parchim
- From the Departments of Biochemistry and Molecular Biology (N.F.P., W.W. T.I., A.H.S., R.E.K., Y.X.), Obstetrics, Gynecology, and Reproductive Sciences (O.A.A., S.B., B.S.), Graduate School of Biomedical Science (N.F.P., R.E.K. Y.X.), University of Texas, Houston; Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China (W.W., Y.X.); Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan (T.I.); and School of Medical Sciences, University of Hyderabad, Gachibowli, Hyderabad, India (A.H.S.)
| | - Wei Wang
- From the Departments of Biochemistry and Molecular Biology (N.F.P., W.W. T.I., A.H.S., R.E.K., Y.X.), Obstetrics, Gynecology, and Reproductive Sciences (O.A.A., S.B., B.S.), Graduate School of Biomedical Science (N.F.P., R.E.K. Y.X.), University of Texas, Houston; Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China (W.W., Y.X.); Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan (T.I.); and School of Medical Sciences, University of Hyderabad, Gachibowli, Hyderabad, India (A.H.S.)
| | - Takayuki Iriyama
- From the Departments of Biochemistry and Molecular Biology (N.F.P., W.W. T.I., A.H.S., R.E.K., Y.X.), Obstetrics, Gynecology, and Reproductive Sciences (O.A.A., S.B., B.S.), Graduate School of Biomedical Science (N.F.P., R.E.K. Y.X.), University of Texas, Houston; Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China (W.W., Y.X.); Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan (T.I.); and School of Medical Sciences, University of Hyderabad, Gachibowli, Hyderabad, India (A.H.S.)
| | - Olaide A Ashimi
- From the Departments of Biochemistry and Molecular Biology (N.F.P., W.W. T.I., A.H.S., R.E.K., Y.X.), Obstetrics, Gynecology, and Reproductive Sciences (O.A.A., S.B., B.S.), Graduate School of Biomedical Science (N.F.P., R.E.K. Y.X.), University of Texas, Houston; Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China (W.W., Y.X.); Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan (T.I.); and School of Medical Sciences, University of Hyderabad, Gachibowli, Hyderabad, India (A.H.S.)
| | - Athar H Siddiqui
- From the Departments of Biochemistry and Molecular Biology (N.F.P., W.W. T.I., A.H.S., R.E.K., Y.X.), Obstetrics, Gynecology, and Reproductive Sciences (O.A.A., S.B., B.S.), Graduate School of Biomedical Science (N.F.P., R.E.K. Y.X.), University of Texas, Houston; Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China (W.W., Y.X.); Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan (T.I.); and School of Medical Sciences, University of Hyderabad, Gachibowli, Hyderabad, India (A.H.S.)
| | - Sean Blackwell
- From the Departments of Biochemistry and Molecular Biology (N.F.P., W.W. T.I., A.H.S., R.E.K., Y.X.), Obstetrics, Gynecology, and Reproductive Sciences (O.A.A., S.B., B.S.), Graduate School of Biomedical Science (N.F.P., R.E.K. Y.X.), University of Texas, Houston; Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China (W.W., Y.X.); Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan (T.I.); and School of Medical Sciences, University of Hyderabad, Gachibowli, Hyderabad, India (A.H.S.)
| | - Baha Sibai
- From the Departments of Biochemistry and Molecular Biology (N.F.P., W.W. T.I., A.H.S., R.E.K., Y.X.), Obstetrics, Gynecology, and Reproductive Sciences (O.A.A., S.B., B.S.), Graduate School of Biomedical Science (N.F.P., R.E.K. Y.X.), University of Texas, Houston; Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China (W.W., Y.X.); Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan (T.I.); and School of Medical Sciences, University of Hyderabad, Gachibowli, Hyderabad, India (A.H.S.)
| | - Rodney E Kellems
- From the Departments of Biochemistry and Molecular Biology (N.F.P., W.W. T.I., A.H.S., R.E.K., Y.X.), Obstetrics, Gynecology, and Reproductive Sciences (O.A.A., S.B., B.S.), Graduate School of Biomedical Science (N.F.P., R.E.K. Y.X.), University of Texas, Houston; Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China (W.W., Y.X.); Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan (T.I.); and School of Medical Sciences, University of Hyderabad, Gachibowli, Hyderabad, India (A.H.S.)
| | - Yang Xia
- From the Departments of Biochemistry and Molecular Biology (N.F.P., W.W. T.I., A.H.S., R.E.K., Y.X.), Obstetrics, Gynecology, and Reproductive Sciences (O.A.A., S.B., B.S.), Graduate School of Biomedical Science (N.F.P., R.E.K. Y.X.), University of Texas, Houston; Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China (W.W., Y.X.); Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan (T.I.); and School of Medical Sciences, University of Hyderabad, Gachibowli, Hyderabad, India (A.H.S.).
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