PMID- 37645383 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230901 IS - 2692-3106 (Electronic) IS - 2692-3106 (Linking) VI - 3 IP - 1 DP - 2022 TI - Placental CD4(+) T cells from preeclamptic patients cause autoantibodies to the angiotensin II type I receptor and hypertension in a pregnant rat model of preeclampsia. PG - 99-111 LID - 10.37349/emed.2022.00077 [doi] AB - Preeclampsia (PE) is a hypertensive disorder of pregnancy associated with activated CD4(+) T cells and autoantibodies to angiotensin II type 1 receptor (AT1-AA). We have previously shown that CD4(+) T cells isolated from women with PE cause hypertension, increased tumor necrosis factor alpha (TNF-alpha), endothelin-1, and soluble fms-like tyrosine kinase-1 (sFlt-1) when injected into pregnant nude-athymic rats compared to CD4(+) T cells from normal pregnant (NP) women. However, the role of PE CD4(+) T cells to cause AT1-AA as a mechanism of hypertension is not known. Aim: Our goal was to determine if PE CD4(+) T cells stimulate AT1-AA in pregnant nude-athymic rats. CD4(+) T cells were isolated from human NP and PE placentasand injected into nude-athymic rats on gestational day (GD) 12. In order to examine the role of the PE CD4(+) T cells to stimulate B cell secretion of AT1-AA, a subset of the rats receiving PE CD4(+) T cells were treated with rituximab on GD 14 or anti-CD40 ligand (anti-CD40L) on GD 12. On GD 19, mean arterial pressure (MAP) and tissues were obtained MAP [114 +/- 1 mmHg (n = 9)] and AT1-AA [19.8 +/- 0.9 beats per minute (bpm, n = 4)] were increased in NP nude + PE CD4(+) T cells compared to NP nude + NP CD4(+) T cells [98 +/- 2 mmHg (n = 7, P < 0.05) and 1.3 +/- 0.9 bpm (n = 5, P < 0.05)]. Rituximab (103 +/- 2 mmHg, n = 3, P < 0.05) and anti-CD40L (102 +/- 1 mmHg, n = 3, P < 0.05) lowered MAP compared to NP nude + PE CD4(+) T cells. Circulating a proliferation-inducing ligand (APRIL) and placental angiotensin-converting enzyme 2 (ACE-2) activity was increased in response to PE CD4(+) T cells. These results show that placental CD4(+) T cells play an important role in the pathophysiology of PE, by activating B cells secreting AT1-AA to cause hypertension during pregnancy. FAU - Reeve, Kristin E AU - Reeve KE AD - Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson, MS 39216, USA. FAU - Deer, Evangeline AU - Deer E AD - Department of Pharmacology, University of Mississippi Medical Center, Jackson, MS 39216, USA. FAU - Amaral, Lorena M AU - Amaral LM AD - Department of Pharmacology, University of Mississippi Medical Center, Jackson, MS 39216, USA. FAU - Cornelius, Denise C AU - Cornelius DC AD - Department of Pharmacology, University of Mississippi Medical Center, Jackson, MS 39216, USA. AD - Department of Emergency Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA. FAU - Herrock, Owen AU - Herrock O AD - Department of Pharmacology, University of Mississippi Medical Center, Jackson, MS 39216, USA. FAU - Harmon, Ashlyn C AU - Harmon AC AD - Department of Pharmacology, University of Mississippi Medical Center, Jackson, MS 39216, USA. FAU - Campbell, Nathan AU - Campbell N AD - Department of Pharmacology, University of Mississippi Medical Center, Jackson, MS 39216, USA. FAU - Fitzgerald, Sarah AU - Fitzgerald S AD - Department of Pharmacology, University of Mississippi Medical Center, Jackson, MS 39216, USA. FAU - Ibrahim, Tarek AU - Ibrahim T AD - Department of Pharmacology, University of Mississippi Medical Center, Jackson, MS 39216, USA. FAU - Wallukat, Gerd AU - Wallukat G AD - Experimental and Clinical Research Center, Max-Delbruck-Centrum fur Molekulare Medizin, 13092 Berlin, Germany. FAU - Dechend, Ralf AU - Dechend R AD - Experimental and Clinical Research Center, Max-Delbruck-Centrum fur Molekulare Medizin, 13092 Berlin, Germany. FAU - LaMarca, Babbette AU - LaMarca B AD - Department of Pharmacology, University of Mississippi Medical Center, Jackson, MS 39216, USA. LA - eng GR - R01 HD067541/HD/NICHD NIH HHS/United States GR - P20 GM121334/GM/NIGMS NIH HHS/United States GR - U54 GM115428/GM/NIGMS NIH HHS/United States GR - R01 HL151407/HL/NHLBI NIH HHS/United States GR - T32 HL105324/HL/NHLBI NIH HHS/United States PT - Journal Article DEP - 20220225 PL - United States TA - Explor Med JT - Exploration of medicine JID - 101765387 PMC - PMC10465114 MID - NIHMS1875586 OTO - NOTNLM OT - Adaptive immunity OT - CD4+ T cells OT - hypertensions OT - pre-eclampsia COIS- Conflicts of interest The authors declare they have no conflict of interest. EDAT- 2022/01/01 00:00 MHDA- 2022/01/01 00:01 PMCR- 2023/08/29 CRDT- 2023/08/30 03:50 PHST- 2022/01/01 00:01 [medline] PHST- 2022/01/01 00:00 [pubmed] PHST- 2023/08/30 03:50 [entrez] PHST- 2023/08/29 00:00 [pmc-release] AID - 10.37349/emed.2022.00077 [doi] PST - ppublish SO - Explor Med. 2022;3(1):99-111. doi: 10.37349/emed.2022.00077. Epub 2022 Feb 25.