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Gajić Bojić M, Đukanović Đ, Marinković S, Jovičić S, Stojiljković MP, Djuric DM, Škrbić R. Methodological challenges in using human umbilical artery as a model for in vitro studies. Exp Physiol 2023; 108:1569-1578. [PMID: 37837634 PMCID: PMC10988505 DOI: 10.1113/ep091374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 09/27/2023] [Indexed: 10/16/2023]
Abstract
NEW FINDINGS What is the central question of this study? What are the biggest challenges in performing in vitro studies on isolated human umbilical arteries? What is the main finding and its importance? The protocols presented in this study indicate some potential outcomes important for interpretation of the vascular responsivities of human umbilical arteries and could be useful for planning future in vitro studies with human umbilical arteries. ABSTRACT Human umbilical artery (HUA) preparations are of particular importance for in vitro studies on isolated blood vessels because their sampling is not risky for the patient, and they can provide the closest possible impression of changes related to the uteroplacental circulation during pre-eclampsia. Using organ bath techniques, useful experimental protocols are provided for measuring some pathophysiological phenomena in the vascular responses of HUAs. Several vasoconstrictors (serotonin, prostaglandin F and phenylephrine) and vasodilators (acetylcholine and minoxidil) were seleted for determination of their vasoactivity in HUAs. The role of L-type voltage-operated calcium channels and different types of potassium channels (KATP , BKCa and KV ) were assessed, as was the impact of homocysteine. Serotonin was confirmed to be the most potent vasoconstrictor, while acetylcholine and phenylephrine caused variability in the relaxation and contraction response of HUA, respectively. The observed increase in serotonin-induced contraction and a decrease in minoxidil-induced relaxation in the presence of homocysteine suggested its procontractile effect on HUA preparations. Using selective blockers, it was determined that KATP and KV channels participate in the minoxidil-induced relaxation, while L-type voltage-dependent Ca2+ channels play an important role in the serotonin-induced contraction. The presented protocols reveal some of the methodological challenges related to HUA preparations and indicate potential outcomes in interpreting the vascular effects of the investigated substances, both in physiological conditions and in the homocysteine-induced pre-eclampsia model.
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Affiliation(s)
- Milica Gajić Bojić
- Centre for Biomedical Research, Faculty of MedicineUniversity of Banja LukaBanja Luka The Republic of SrpskaBosnia and Herzegovina
| | - Đorđe Đukanović
- Centre for Biomedical Research, Faculty of MedicineUniversity of Banja LukaBanja Luka The Republic of SrpskaBosnia and Herzegovina
| | - Sonja Marinković
- Department of PaediatricsUniversity Clinical Centre of the Republic of SrpskaBanja Luka The Republic of SrpskaBosnia and Herzegovina
| | - Sanja Jovičić
- Department of Histology and Embryology, Faculty of MedicineUniversity of Banja LukaBanja Luka The Republic of SrpskaBosnia and Herzegovina
| | - Miloš P. Stojiljković
- Centre for Biomedical Research, Faculty of MedicineUniversity of Banja LukaBanja Luka The Republic of SrpskaBosnia and Herzegovina
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of MedicineUniversity of Banja LukaBanja Luka The Republic of SrpskaBosnia and Herzegovina
| | - Dragan M. Djuric
- Centre for Biomedical Research, Faculty of MedicineUniversity of Banja LukaBanja Luka The Republic of SrpskaBosnia and Herzegovina
- Faculty of Medicine, Institute of Medical Physiology ‘Richard Burian’University of BelgradeBelgradeSerbia
| | - Ranko Škrbić
- Centre for Biomedical Research, Faculty of MedicineUniversity of Banja LukaBanja Luka The Republic of SrpskaBosnia and Herzegovina
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of MedicineUniversity of Banja LukaBanja Luka The Republic of SrpskaBosnia and Herzegovina
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Tang J, Qi L, He Y, Li N, Zhang Z, Zhou X, Su H, Zheng Q, Zhang Y, Tao J, Xu Z. In vitro fertilization with frozen embryo transfer increased histamine-mediated contractile sensitivity via PKCβ in human umbilical vein. Reprod Biol Endocrinol 2023; 21:54. [PMID: 37312191 DOI: 10.1186/s12958-023-01103-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 05/16/2023] [Indexed: 06/15/2023] Open
Abstract
OBJECTIVE In vitro fertilization-embryo transfer (IVF-ET) technologies (especially frozen ET) have been widely used, which might affect maternal and fetal health. Information regarding influence of IVF-ET on the vasoconstriction of human umbilical vein (HUV) is limited. This study determined effects of frozen ET on histamine-mediated vascular responses in HUV and related mechanisms. METHODS AND RESULTS HUVs were collected from frozen ET conceived pregnancy and spontaneously conceived pregnancy (control). Histamine concentration in umbilical plasma was higher in frozen ET group than the control. Histamine-mediated contractile response curve was left-shifted in the frozen ET group when comparing with the control. In isolated HUV rings, H1R showed a critical role in regulating vascular constriction, while H2R played little roles in regulating vessel tone. Iberiotoxin and 4-aminopyridine didn't significantly change histamine-mediated constriction in HUVs. Histamine-induced vasoconstrictions were significantly decreased by nifedipine, KN93, or GF109203X, while the inhibitory effects were significantly greater in the frozen ET group in comparison to the control. The constrictions by Bay K8644, phenylephrine, or PDBu were stronger in frozen ET, respectively. There was a decrease in the protein expressions of H1R and H2R, an increase in protein expressions of BKCaα and PKCβ. CONCLUSIONS Histamine-induced constriction in HUV was mainly via H1R. The increased sensitivity to histamine in HUV following frozen ET cycles were linked to the enhanced PKCβ protein expression and function. The new data and findings in this study provide important insight into influences of frozen ET on fetal vessel development and potential influence in long-term.
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Affiliation(s)
- Jiaqi Tang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, Jiangsu, China.
| | - Linglu Qi
- Women's Hospital School of Medicine Zhejiang University, Zhejiang, China
| | - Yun He
- Department of Obstetrics and Gynecology, Taixing People's Hospital, Taixing, Jiangsu, China
| | - Na Li
- Maternal and Child Health Care Hospital of Wuxi, Wuxi, Jiangsu, China
| | - Ze Zhang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Xiuwen Zhou
- Institute for Fetology, First Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Hongyu Su
- Institute for Fetology, First Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Qiutong Zheng
- Institute for Fetology, First Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Yumeng Zhang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Jianying Tao
- Suzhou Municipal Hospital, the Affiliated Suzhou Hospital of Nanjing Medical University, Jiangsu, China.
| | - Zhice Xu
- Institute for Fetology, First Hospital of Soochow University, Suzhou, Jiangsu, China.
- Maternal and Child Health Care Hospital of Wuxi, Wuxi, Jiangsu, China.
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3
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Tang J, Zhang Y, Zhang Z, Tao J, Wu J, Zheng Q, Xu T, Li N, Xu Z. Specific dilation pattern in placental circulation and the NO/sGC role in preeclampsia placental vessels. Front Endocrinol (Lausanne) 2023; 14:1182636. [PMID: 37293496 PMCID: PMC10244738 DOI: 10.3389/fendo.2023.1182636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/09/2023] [Indexed: 06/10/2023] Open
Abstract
Objective Endothelial functions in controlling blood flow in placental circulation are still unclear. The present study compares vascular dilations between placental circulation and other vessels, as well as between normal and preeclampsia placental vessels. Methods Placental, umbilical, and other vessels (cerebral and mesenteric arteries) were collected from humans, sheep, and rats. Vasodilation was tested by JZ101 and DMT. Q-PCR, Western blot, and Elisa were used for molecular experiments. Results Endothelium-dependent/derived vasodilators, including acetylcholine, bradykinin, prostacyclin, and histamine, mediated no or minimal dilation in placental circulation, which was different from that in other vessels in sheep and rats. There were lower mRNA expressions of muscarinic receptors, histamine receptors, bradykinin receptor 2, endothelial nitric oxide synthesis (eNOS), and less nitric oxide (NO) in human umbilical vessels when compared with placental vessels. Exogenous NO donors (sodium nitroprusside, SNP) and soluble guanylate cyclase (sGC) activators (Bay41-2272) decreased the baseline of vessel tone in placental circulation in humans, sheep, and rats, but not in other arteries. The sGC inhibitor ODQ suppressed the reduced baseline caused by the SNP. The decreased baseline by SNP or Bay41-2272 was higher in placental vessels than in umbilical vessels, suggesting that the role of NO/sGC is more important in the placenta. NO concentrations in preeclampsia placental vessels were lower than those in control, while no significant change was found in umbilical plasma between the two groups. eNOS expression was similar between normal and preeclampsia placental vessels, but phosphorylated eNOS levels were significantly lower in preeclampsia. Following serotonin, SNP or Bay41-2272-mediated dilations were weaker in preeclampsia placental vessels. The decreased amplitude of SNP- or Bay41-2272 at baseline was smaller in preeclampsia. The decreased amplitudes of ODQ + SNP were comparable between the two groups. Despite higher beta sGC expression, sGC activity in the preeclampsia placenta was lower. Conclusion This study demonstrated that receptor-mediated endothelium-dependent dilation in placental circulation was significantly weaker than other vessels in various species. The results, showed firstly, that exogenous NO played a role in regulating the baseline tone of placental circulation via sGC. Lower NO production and decreased NO/sGC could be one of the reasons for preeclampsia. The findings contribute to understanding specific features of placental circulation and provide information about preeclampsia in placental vessels.
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Affiliation(s)
- Jiaqi Tang
- Institute for Fetology, First Affiliated Hospital of Soochow University, Jiangsu, China
| | - Yumeng Zhang
- Institute for Fetology, First Affiliated Hospital of Soochow University, Jiangsu, China
| | - Ze Zhang
- Institute for Fetology, First Affiliated Hospital of Soochow University, Jiangsu, China
| | - Jianying Tao
- Suzhou Municipal Hospital, the Affiliated Suzhou Hospital of Nanjing Medical University, Jiangsu, China
| | - Jue Wu
- Obstetrics and Gynecology, Dushu Lake Hospital Affiliated to Soochow University, Jiangsu, China
| | - Qiutong Zheng
- Institute for Fetology, First Affiliated Hospital of Soochow University, Jiangsu, China
| | - Ting Xu
- Institute for Fetology, First Affiliated Hospital of Soochow University, Jiangsu, China
| | - Na Li
- Maternal and Child Health Care Hospital of Wuxi, Jiangsu, China
| | - Zhice Xu
- Institute for Fetology, First Affiliated Hospital of Soochow University, Jiangsu, China
- Maternal and Child Health Care Hospital of Wuxi, Jiangsu, China
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Tsen LC, Gelman S. The Venous System during Pregnancy, Part 2: Clinical Implications of the Venous System. Int J Obstet Anesth 2022; 50:103274. [DOI: 10.1016/j.ijoa.2022.103274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/17/2022] [Indexed: 10/19/2022]
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5
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Li H, An JR, Seo MS, Kang M, Heo R, Park S, Mun SY, Bae YM, Han ET, Han JH, Chun W, Na SH, Park WS. Downregulation of large-conductance Ca 2+-activated K + channels in human umbilical arterial smooth muscle cells in gestational diabetes mellitus. Life Sci 2022; 288:120169. [PMID: 34822796 DOI: 10.1016/j.lfs.2021.120169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/10/2021] [Accepted: 11/18/2021] [Indexed: 11/25/2022]
Abstract
AIMS We investigated the changes in large-conductance Ca2+-activated K+ (BKCa) channels from human umbilical arterial smooth muscle cells experiencing gestational diabetes mellitus (GDM). MAIN METHODS Whole-cell patch-clamp technique, arterial tone measurement, RT-PCR, Quantitative real-time PCR, western blot were performed in human umbilical arterial smooth muscle cells. KEY FINDINGS Whole-cell BKCa current density was decreased in the GDM group compared with the normal group. The vasorelaxant effects of the synthetic BKCa channel activator NS-1619 (10 μM) were impaired in the GDM group compared with the normal group. Reverse-transcription polymerase chain reaction (RT-PCR), real-time RT-PCR, and western blot analyses suggested that the mRNA, total RNA, and protein expression levels of the BKCa channel were decreased in the GDM group relative to the normal group. In addition, the expression levels of protein kinase A and protein kinase G, which regulate BKCa channel activity, remained unchanged between the groups. Applying the BKCa channel inhibitor paxilline (10 μM) induced vasoconstriction and membrane depolarization of isolated umbilical arteries in the normal group but showed less of an effect on umbilical arteries in the GDM group. SIGNIFICANCE Our results demonstrate for the first time impaired BKCa current and BKCa channel-induced vasorelaxation activities that were not caused by impaired BKCa channel-regulated protein kinases, but by decreased expression of the BKCa channels, in the umbilical arteries of GDM patients.
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Affiliation(s)
- Hongliang Li
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, Jiangsu, China
| | - Jin Ryeol An
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon 24341, South Korea
| | - Mi Seon Seo
- Department of Physiology, Konkuk University School of Medicine, Chungju 27478, South Korea
| | - Minji Kang
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon 24341, South Korea
| | - Ryeon Heo
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon 24341, South Korea
| | - Seojin Park
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon 24341, South Korea
| | - Seo-Yeong Mun
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon 24341, South Korea
| | - Young Min Bae
- Department of Physiology, Konkuk University School of Medicine, Chungju 27478, South Korea
| | - Eun-Taek Han
- Department of Medical Environmental Biology and Tropical Medicine, Kangwon National University School of Medicine, Chuncheon 24341, South Korea
| | - Jin-Hee Han
- Department of Medical Environmental Biology and Tropical Medicine, Kangwon National University School of Medicine, Chuncheon 24341, South Korea
| | - Wanjoo Chun
- Department of Pharmacology, Kangwon National University School of Medicine, Chuncheon 24341, South Korea
| | - Sung Hun Na
- Institute of Medical Sciences, Department of Obstetrics and Gynecology, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon 24341, South Korea.
| | - Won Sun Park
- Institute of Medical Sciences, Department of Physiology, Kangwon National University School of Medicine, Chuncheon 24341, South Korea.
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Shi Y, Liu J, Zhu D, Lu L, Zhang M, Li W, Zeng H, Yu X, Guo J, Zhang Y, Zhou X, Gao Q, Xia F, Chen Y, Li M, Sun M. Methylation-reprogrammed CHRM3 results in vascular dysfunction in the human umbilical vein following IVF-ET. Biol Reprod 2021; 106:687-698. [PMID: 34935917 DOI: 10.1093/biolre/ioab234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 11/08/2021] [Accepted: 12/15/2021] [Indexed: 11/13/2022] Open
Abstract
Assisted reproductive technology (ART) has been used globally among infertile couples. However, many epidemiological investigations have indicated that ART is associated with a range of long-term adverse health outcomes in offspring, including cardiovascular disease, obesity and increased plasma lipid levels. Until now, direct evidence has been limited regarding the pathological changes in vascular function in fetuses with ART. In this study, human umbilical cords were collected from healthy normal pregnancies and IVF-ET pregnancies. Vascular functional studies involving acetylcholine (ACh), antagonists of its specific receptors, and L-type calcium channel/PKC-MLC20 phosphorylation pathway specific inhibitors were conducted. Quantitative real-time PCR, Western blotting and methylation analyses were performed on umbilical vein samples. We found that the umbilical vein constriction induced by ACh in the IVF-ET group was significantly attenuated compared with that in the healthy normal pregnancy group, which was not only associated with the hypermethylation of ACh muscarinic receptor subtype 3 (CHRM3) and decreased expression of CHRM3, PKCβ and CaV1.2, but was also related to the reduced phosphorylation of MLC20. The present study revealed that the hypermethylation of CHRM3, leading to a reduction in CHRM3 expression and downregulation of the CaV1.2/PKC-MLC20 phosphorylation pathway, was responsible for the decreased sensitivity to ACh observed in the umbilical vein under IVF-ET conditions. The hypermethylation of CHRM3 caused by IVF-ET might play an important role in altered vasoconstriction and impact cardiovascular systems in the long run.
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Affiliation(s)
- Yajun Shi
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Jingliu Liu
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Dan Zhu
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Likui Lu
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Mengshu Zhang
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China.,Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, 215002, China
| | - Weisheng Li
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Hongtao Zeng
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Xi Yu
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Jun Guo
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Yingying Zhang
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Xiuwen Zhou
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Qinqin Gao
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Fei Xia
- Reproductive Medicine Center of the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Youguo Chen
- Department of Obstetrics and Gynecology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Min Li
- Department of Obstetrics and Gynecology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
| | - Miao Sun
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, 215006, China
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7
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Pinna C, Sala A. Citrus flavonoids effects on human umbilical vein. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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8
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Krause BJ. Novel insights for the role of nitric oxide in placental vascular function during and beyond pregnancy. J Cell Physiol 2021; 236:7984-7999. [PMID: 34121195 DOI: 10.1002/jcp.30470] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 05/28/2021] [Accepted: 06/01/2021] [Indexed: 01/02/2023]
Abstract
More than 30 years have passed since endothelial nitric oxide synthesis was described using the umbilical artery and vein endothelium. That seminal report set the cornerstone for unveiling the molecular aspects of endothelial function. In parallel, the understanding of placental physiology has gained growing interest, due to its crucial role in intrauterine development, with considerable long-term health consequences. This review discusses the evidence for nitric oxide (NO) as a critical player of placental development and function, with a special focus on endothelial nitric oxide synthase (eNOS) vascular effects. Also, the regulation of eNOS-dependent vascular responses in normal pregnancy and pregnancy-related diseases and their impact on prenatal and postnatal vascular health are discussed. Recent and compelling evidence has reinforced that eNOS regulation results from a complex network of processes, with novel data concerning mechanisms such as mechano-sensing, epigenetic, posttranslational modifications, and the expression of NO- and l-arginine-related pathways. In this regard, most of these mechanisms are expressed in an arterial-venous-specific manner and reflect traits of the fetal systemic circulation. Several studies using umbilical endothelial cells are not aimed to understand placental function but general endothelial function, reinforcing the influence of the placenta on general knowledge in physiology.
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Affiliation(s)
- Bernardo J Krause
- Instituto de Ciencias de la Salud, Universidad de O'Higgins, Rancagua, Chile
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9
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Xiong J, Liang G, Hu L, Chen W, Deng J, Gu J, Li Y, Wang G, Sun Y. Transient visual acuity loss after spine surgery in the prone position: a case report and literature review. J Int Med Res 2021; 48:300060520952279. [PMID: 32883134 PMCID: PMC7479872 DOI: 10.1177/0300060520952279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Visual loss after spine surgery in the prone position is a disastrous postoperative
complication because it is almost irreversible. Additionally, the optimal treatments and
recommended professional guidelines for visual loss after spine surgery are deficient. A
43-year-old man developed visual loss after spine surgery in the prone position. Immediate
ophthalmic consultation confirmed central retinal artery occlusion. Therefore, combined
therapies were administered, including neurotrophy, anticoagulation, vasodilation, and
adequate fluid infusion, followed by hyperbaric oxygen treatment. After active treatment,
his visual acuity gradually recovered from 5 hours postoperatively and continued to
improve thereafter. We reviewed the literature on postoperative visual loss with a focus
on spine surgery in the prone position. Because the etiology of this complication is
complex and has few effective treatments, the best method for its avoidance is to pay
close attention to preventing it during surgery.
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Affiliation(s)
- Jun Xiong
- Department of Anesthesiology, Sanbo Brain Hospital, Capital Medical University, Beijing, China
| | - Guiling Liang
- Department of Anesthesiology, Korla Hospital, The Second Division of Xinjiang Production and Construction Corps. Jiaotong Xilu, Korla, Bayingol Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region of China, Xinjiang, China
| | - Liang Hu
- Department of Anesthesiology, Korla Hospital, The Second Division of Xinjiang Production and Construction Corps. Jiaotong Xilu, Korla, Bayingol Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region of China, Xinjiang, China
| | - Wei Chen
- Department of Anesthesiology, Korla Hospital, The Second Division of Xinjiang Production and Construction Corps. Jiaotong Xilu, Korla, Bayingol Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region of China, Xinjiang, China
| | - Jie Deng
- Department of Ophthalmology, Korla Hospital, The Second Division of Xinjiang Production and Construction Corps. Jiaotong Xilu, Korla, Bayingol Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region of China, Xinjiang, China
| | - Jun Gu
- Department of Neurosurgery, Korla Hospital, The Second Division of Xinjiang Production and Construction Corps. Jiaotong Xilu, Korla, Bayingol Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region of China, Xinjiang, China
| | - Yushi Li
- Department of Anesthesiology, Korla Hospital, The Second Division of Xinjiang Production and Construction Corps. Jiaotong Xilu, Korla, Bayingol Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region of China, Xinjiang, China
| | - Guoyi Wang
- Department of Anesthesiology, Korla Hospital, The Second Division of Xinjiang Production and Construction Corps. Jiaotong Xilu, Korla, Bayingol Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region of China, Xinjiang, China
| | - Yongxing Sun
- Department of Anesthesiology, Sanbo Brain Hospital, Capital Medical University, Beijing, China
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10
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Feng X, Zhang Y, Zhang Y, Yang X, Man D, Lu L, Xu T, Liu Y, Yang C, Li H, Qi L, Su H, Zhou X, Xu Z. Prostaglandin I2 mediates weak vasodilatation in human placental microvessels. Biol Reprod 2020; 103:1229-1237. [PMID: 32902654 DOI: 10.1093/biolre/ioaa156] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 08/20/2020] [Accepted: 09/04/2020] [Indexed: 01/14/2023] Open
Abstract
Human placental vessels (HPVs) play important roles in the exchange of metabolites and oxygen in maternal-fetal circulation. Endothelial-derived prostacyclin (prostaglandin I2, PGI2) is a critical endothelial vasodilator in the body. However, the physiological and pharmacological functions of endothelial PGI2 in the human placenta are still unclear. Human, sheep, and rat blood vessels were used in this study. Unlike non-placental vessels (non-PVs), the PGI2 synthesis inhibitor tranylcypromine (TCP) did not modify 5-hydroxytryptamine (5-HT)-induced vascular contraction, indicating that endothelial-derived PGI2 was weak in PVs. Vascular responses to exogenous PGI2 showed slight relaxation followed by a significant contraction at a higher concentration in HPV, which was inhibited by the thromboxane-prostanoid (TP) receptors antagonist SQ-29,548. Testing PVs and non-PVs from sheep also showed similar functional results. More TP receptors than PGI2 (IP) receptors were observed in HPVs. The whole-cell K+ current density of HPVs was significantly weaker than that of non-PVs. This study demonstrated the specific characteristics of the placental endogenous endothelial PGI2 system and the patterns of placental vascular physiological/pharmacological response to exogenous PGI2, showing that placental endothelial PGI2 does not markedly contribute to vascular dilation in the human placenta, in notable contrast to non-PVs. The results provide crucial information for understanding the endothelial roles of HPVs, which may be helpful for further investigations of potential targets in the treatment of diseases such as preeclampsia.
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Affiliation(s)
- Xueqin Feng
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China.,Department of Obstetrics, Affiliated Hospital of Jining Medical University, Jining, China
| | - Yingying Zhang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Yumeng Zhang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Xiaojun Yang
- Department of Obstetrics and Gynecology, First Hospital of Soochow University, Suzhou, China
| | - Dongmei Man
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Jining, China
| | - Likui Lu
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Ting Xu
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Yanping Liu
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Chunli Yang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Huan Li
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Linglu Qi
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Hongyu Su
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Xiuwen Zhou
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Zhice Xu
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
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Britto-Júnior J, Jacintho FF, Figueiredo Murari GM, Campos R, Moreno RA, Antunes E, Mónica FZ, De Nucci G. Electrical field stimulation induces endothelium-dependent contraction of human umbilical cord vessels. Life Sci 2020; 243:117257. [PMID: 31917992 DOI: 10.1016/j.lfs.2020.117257] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 12/22/2019] [Accepted: 12/31/2019] [Indexed: 11/24/2022]
Abstract
Electrical field stimulation (EFS) has been used for decades in classical pharmacological preparations in order to characterize the mediators released by neural endings involved in smooth muscle contraction or relaxation. Since most of the human umbilical cord has no innervation, EFS has never been used in this preparation. This study aimed to investigate the effect of EFS on vascular responsiveness from human umbilical cord. Segments of the human umbilical cord were obtained from normotensive parturients and the human umbilical artery (HUA) and the human umbilical vein (HUV) were isolated and mounted in organ bath chambers. Electrical field stimulation-induced contractions in both HUA (2.35 ± 1.31 mN and 3.77 ± 2.31 mN for 8 Hz and 16 Hz respectively, n = 24) and HUV (3.81 ± 2.54 mN and 6.26 ± 4.51 mN for 8 Hz and 16 Hz respectively, n = 25). The addition of tetrodotoxin (1 μM) did not alter the EFS-induced contractions in both tissues (n = 5). Pre-incubation with atropine (10 and 100 μM), glibenclamide (10 μM) and indomethacin (10 μM) did not affect the EFS-induced contractions in both tissues. The contractions of both vessels were significantly reduced by pre-incubation of the tissues with phentolamine (10 and 100 μM). The endothelium removal almost abolished the EFS- induced contractions in both vessels (n = 5). In sandwich preparation, donor tissue (with endothelium) released a factor (s) that promoted contraction of the recipient tissue (endothelium removal) in both HUA and HUV (n = 5, respectively). Our findings indicate a potential role of endothelium-derived catecholamines in modulating HUA and HUV reactivities.
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Affiliation(s)
- José Britto-Júnior
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (Unicamp), Campinas, Brazil.
| | - Felipe Fernandes Jacintho
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (Unicamp), Campinas, Brazil
| | | | - Rafael Campos
- Superior Institute of Biomedical Sciences, Ceará State University (UECE), Fortaleza, Brazil
| | - Ronilson Agnaldo Moreno
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (Unicamp), Campinas, Brazil
| | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (Unicamp), Campinas, Brazil
| | - Fabiola Z Mónica
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (Unicamp), Campinas, Brazil
| | - Gilberto De Nucci
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (Unicamp), Campinas, Brazil; Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo, Brazil; Metropolitan University of Santos (UNIMES), Santos, Brazil
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12
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Lorca RA, Lane SL, Bales ES, Nsier H, Yi H, Donnelly MA, Euser AG, Julian CG, Moore LG. High Altitude Reduces NO-Dependent Myometrial Artery Vasodilator Response During Pregnancy. Hypertension 2019; 73:1319-1326. [PMID: 31006328 DOI: 10.1161/hypertensionaha.119.12641] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The chronic hypoxia of high-altitude (HA) residence reduces uterine artery blood flow during pregnancy, likely contributing to an increased frequency of preeclampsia and intrauterine growth restriction. We hypothesized that this lesser pregnancy blood flow rise was due, in part, to reduced vasodilation of myometrial arteries (MAs). Here, we assessed MA vasoreactivity in healthy residents of high (2902±39 m) or low altitude (LA; 1669±10 m). MA contractile responses to potassium chloride, phenylephrine, or the thromboxane A2 agonist U46619 did not differ between LA and HA women. Acetylcholine vasodilated phenylephrine or U466119 preconstricted MAs at LA, yet had no effect on HA MAs. In contrast, another vasodilator, bradykinin, relaxed MAs from both altitudes similarly. At LA, the NO synthase inhibitor L-NG-nitroarginine methyl ester decreased both acetylcholine and bradykinin vasodilation by 56% and 33%, respectively. L-NG-nitroarginine methyl ester plus the COX (cyclooxygenase) inhibitor indomethacin had similar effects on acetylcholine and bradykinin vasodilation (68% and 42% reduction, respectively) as did removing the endothelium (78% and 50% decrease, respectively), suggesting a predominantly NO-dependent vasodilation at LA. However, at HA, L-NG-nitroarginine methyl ester did not change bradykinin vasodilation, whereas indomethacin or endothelium removal decreased it by 28% and 72%, respectively, indicating impaired NO signaling at HA. Suggesting that the impairment was downstream of eNOS (endothelial NO synthase), HA attenuated the vasodilation elicited by the NO donor sodium nitroprusside. We concluded that reduced NO-dependent MA vasodilation likely contributes to diminished uteroplacental perfusion in HA pregnancies.
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Affiliation(s)
- Ramón A Lorca
- From the Division of Reproductive Sciences (R.A.L., S.L.L., E.S.B., L.G.M.), University of Colorado Denver, Aurora
| | - Sydney L Lane
- From the Division of Reproductive Sciences (R.A.L., S.L.L., E.S.B., L.G.M.), University of Colorado Denver, Aurora
| | - Elise S Bales
- From the Division of Reproductive Sciences (R.A.L., S.L.L., E.S.B., L.G.M.), University of Colorado Denver, Aurora
| | - Hisham Nsier
- BA/BS-MD Program, College of Liberal Arts and Sciences (H.N., H.Y.), University of Colorado Denver, Aurora
| | - HeaMi Yi
- BA/BS-MD Program, College of Liberal Arts and Sciences (H.N., H.Y.), University of Colorado Denver, Aurora
| | - Meghan A Donnelly
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology (M.A.D., A.G.E.), University of Colorado Denver, Aurora
| | - Anna G Euser
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology (M.A.D., A.G.E.), University of Colorado Denver, Aurora
| | - Colleen G Julian
- Division of Bioinformatics and Personalized Medicine, Department of Medicine (C.G.J.), University of Colorado Denver, Aurora
| | - Lorna G Moore
- From the Division of Reproductive Sciences (R.A.L., S.L.L., E.S.B., L.G.M.), University of Colorado Denver, Aurora
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13
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Gao Q, Tang J, Li N, Zhou X, Li Y, Liu Y, Wu J, Yang Y, Shi R, He A, Li X, Zhang Y, Chen J, Zhang L, Sun M, Xu Z. A novel mechanism of angiotensin II-regulated placental vascular tone in the development of hypertension in preeclampsia. Oncotarget 2018; 8:30734-30741. [PMID: 28430615 PMCID: PMC5458163 DOI: 10.18632/oncotarget.15416] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 02/06/2017] [Indexed: 12/03/2022] Open
Abstract
The present study tested the hypothesis that angiotensin II plays a role in the regulation of placental vascular tone, which contributes to hypertension in preeclampsia. Functional and molecular assays were performed in large and micro placental and non-placental vessels from humans and animals. In human placental vessels, angiotensin II induced vasoconstrictions in 78.7% vessels in 155 tests, as referenced to KCl-induced contractions. In contrast, phenylephrine only produced contractions in 3.0% of 133 tests. In non-placental vessels, phenylephrine induced contractions in 76.0% of 67 tests, whereas angiotensin II failed to produce contractions in 75 tests. Similar results were obtained in animal placental and non-placental vessels. Compared with non-placental vessels, angiotensin II receptors and β -adrenoceptors were significantly increased in placental vessels. Compared to the vessels from normal pregnancy, angiotensin II-induced vasoconstrictions were significantly reduced in preeclamptic placentas, which was associated with a decrease in angiotensin II receptors. In addition, angiotensin II and angiotensin converting enzyme in the maternal-placenta circulation in preeclampsia were increased, whereas angiotensin I and angiotensin1-7 concentrations were unchanged. The study demonstrates a selective effect of angiotensin II in maintaining placental vessel tension, which may play an important role in development of hypertension in preeclampsia.
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Affiliation(s)
- Qinqin Gao
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Jiaqi Tang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Na Li
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Xiuwen Zhou
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Yongmei Li
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Yanping Liu
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Jue Wu
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Yuxian Yang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Ruixiu Shi
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Axin He
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Xiang Li
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Yingying Zhang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Jie Chen
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Lubo Zhang
- Center for Perinatal Biology, Loma Linda University, Loma Linda, California, USA
| | - Miao Sun
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China
| | - Zhice Xu
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China.,Center for Perinatal Biology, Loma Linda University, Loma Linda, California, USA
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14
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Gao Q, Tang J, Li N, Zhou X, Zhu X, Li W, Liu B, Feng X, Tao J, Han B, Zhang H, Sun M, Xu Z. New conception for the development of hypertension in preeclampsia. Oncotarget 2018; 7:78387-78395. [PMID: 27861155 PMCID: PMC5346647 DOI: 10.18632/oncotarget.13410] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 11/14/2016] [Indexed: 12/27/2022] Open
Abstract
Placental vascular dysfunction was suggested to be critical for placental ischemia-initiated hypertension in preeclampsia, although the contributions of endothelium involved are unclear. The present study found, unlike non-placental vessels, acetylcholine showed no vasodilatation effect on placental vessels, indicating that endothelial-derived nitric oxide (NO) was extremely weak in placental vessels. Placental vascular responses to exogenous NO from sodium nitroprusside (SNP) were significantly different from non-placental vessels. These results were further confirmed in sheep, and rat vessels. In preeclamptic placental vessels, acetylcholine also showed no vasodilatation effects, while vascular responses to SNP were suppressed, associated with impaired cGMP/sGC pathway in vascular smooth muscle cells (VSMCs). The current theory on placental ischemia-initiated hypertension in preeclampsia focused on changes in placental vascular functions, including endothelial dysfunction. This study found the placental endothelium contributed very poorly to vasodilatation, and altered vascular functions in preeclampsia mainly occurred in VSMCs instead of endothelial cells. The findings contribute importantly to understanding the special feature of placental vascular functions and its pathophysiological changes in the development of hypertension in preeclampsia.
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Affiliation(s)
- Qinqin Gao
- Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jiaqi Tang
- Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Na Li
- Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiuwen Zhou
- Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiaolin Zhu
- Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Weisheng Li
- Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Bailin Liu
- Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xueqin Feng
- Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jianying Tao
- Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, China.,Department of Obstetrics and Gynecology, First and Second Affiliated Hospital of Soochow University, Municipal Hospital, Suzhou, China
| | - Bing Han
- Department of Obstetrics and Gynecology, First and Second Affiliated Hospital of Soochow University, Municipal Hospital, Suzhou, China
| | - Hong Zhang
- Department of Obstetrics and Gynecology, First and Second Affiliated Hospital of Soochow University, Municipal Hospital, Suzhou, China
| | - Miao Sun
- Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhice Xu
- Institute for Fetology, First Affiliated Hospital of Soochow University, Suzhou, China.,Center for Perinatal Biology, Loma Linda University, California, USA
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15
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Li X, Zhang M, Pan X, Xu Z, Sun M. “Three Hits” Hypothesis for Developmental Origins of Health and Diseases in View of Cardiovascular Abnormalities. Birth Defects Res 2017; 109:744-757. [PMID: 28509412 DOI: 10.1002/bdr2.1037] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 03/24/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Xiang Li
- Institute for Fetology; First Hospital of Soochow University; Suzhou China
| | - Mengshu Zhang
- Institute for Fetology; First Hospital of Soochow University; Suzhou China
| | - Xinghua Pan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences
- Key Laboratory of Biochip Technology in Guangdong province; Southern Medical University; Guangzhou China
- Department of Genetics; Yale University School of Medicine; New Haven Connecticut
| | - Zhice Xu
- Institute for Fetology; First Hospital of Soochow University; Suzhou China
| | - Miao Sun
- Institute for Fetology; First Hospital of Soochow University; Suzhou China
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16
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Zhu X, Hou L, Zhang J, Yao C, Liu Y, Zhang C, Xu Y, Cao J. The structural and functional effects of fine particulate matter from cooking oil fumes on rat umbilical cord blood vessels. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:16567-16578. [PMID: 27178289 DOI: 10.1007/s11356-016-6821-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 05/02/2016] [Indexed: 06/05/2023]
Abstract
A growing body of epidemiological evidence has supported the association between maternal exposure to airborne fine particulate matter (PM2.5) during pregnancy and adverse pregnancy outcomes. However, the specific biological mechanisms implicated in the causes of adverse pregnancy outcomes are not well defined. In this study, a pregnant rat model of exposure to different doses of cooking oil fumes (COFs)-derived PM2.5 by tail intravenous injection in different pregnant stages was established. The results indicated that exposure to COFs-derived PM2.5 was associated with adverse pregnancy outcomes, changed the structure of umbilical cord blood vessels, decreased the diameter and lumen area, and increased wall thickness. What's more, a significant increase of maximum contraction tension was observed in the early pregnancy high-dose exposure group and pregnant low-dose exposure group compared to the control group. Based on the maximum contraction tension, acetylcholine (ACh) did not induce vasodilation but caused a dose-dependent constriction, and there were significant differences in the two groups compared to the control group. Exposure to COFs-derived PM2.5 impaired the vasomotor function of umbilical veins by affecting the expression of NO and ET-1. This is the first study that evaluated the association of risk of adverse pregnancy outcomes and pregnant rats exposed to COFs-derived PM2.5 and primarily explored the potential mechanisms of umbilical cord blood vessels injury on a rat model. More detailed vitro and vivo studies are needed to further explore the mechanism in the future.
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Affiliation(s)
- Xiaoxia Zhu
- Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China
| | - Lijuan Hou
- Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China
| | - Jian Zhang
- Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China
| | - Cijiang Yao
- Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China
| | - Ying Liu
- Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China
| | - Chao Zhang
- Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China
| | - Yachun Xu
- Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China
| | - Jiyu Cao
- The Teaching Center for Preventive Medicine, School of Public Health, Anhui Medical University, Meishan Road 81, Hefei, 230032, Anhui, China.
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17
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Zhu Z, Tang J, Zhou X, Xiang S, Zhu X, Li N, Shi R, Zhong Y, Zhang L, Sun M, Xu Z. Roles of ion channels in regulation of acetylcholine-mediated vasoconstrictions in umbilical cords of rabbit/rats. Reprod Toxicol 2016; 65:95-103. [PMID: 27421582 DOI: 10.1016/j.reprotox.2016.07.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 05/31/2016] [Accepted: 07/08/2016] [Indexed: 12/25/2022]
Abstract
We recently demonstrated that acetylcholine (ACh) produced reliable vasoconstrictions in the umbilical cords. This study investigated the possible mechanisms with different antagonists. ACh-mediated vasoconstrictions were decreased by voltage-operated calcium (Ca2+) channels antagonist nifedipine or inositol-1,4,5-trisphosphate-mediated Ca2+ release antagonist 2-aminoethyl diphenylborinate, indicating that both extracellular and intracellular calcium modulated the ACh-stimulated umbilical contraction. Intracellular Ca2+ concentrations were increased simultaneously with vasoconstrictions by ACh in the umbilical vessels. Inhibiting large-conductance calcium-dependent potassium (BK) channels enhanced ACh-mediated contraction, whereas inhibiting voltage dependent potassium (K+), inward rectifier K+ and ATP-sensitive K+ channels had no effects. Incubation with specific K+ channel inhibitors showed that ACh suppressed BK currents rather than 4-aminopyridine-sensitive K+ channels currents. The results suggested that blood vessels in umbilical cords had special characteristics in response to cholinergic signals. ACh-stimulated umbilical vasoconstrictions were mediated via muscarinic receptor subtype 1/3-protein kinase C/cyclooxygenase-BK channel pathways.
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Affiliation(s)
- Zhoufeng Zhu
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Jiaqi Tang
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Xiuwen Zhou
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Sharon Xiang
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China; Center for Perinatal Biology, Loma Linda University, Loma Linda, CA, USA
| | - Xiaolin Zhu
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Na Li
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Ruixiu Shi
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Yuan Zhong
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Lubo Zhang
- Center for Perinatal Biology, Loma Linda University, Loma Linda, CA, USA
| | - Miao Sun
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China.
| | - Zhice Xu
- Institute for Fetology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China; Center for Perinatal Biology, Loma Linda University, Loma Linda, CA, USA.
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