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Jacob H, Braekow P, Hofmann B, Kirchhefer U, Forster L, Mönnich D, Humphrys LJ, Pockes S, Neumann J, Gergs U. Ergometrine stimulates histamine H 2 receptors in the isolated human atrium. Naunyn Schmiedebergs Arch Pharmacol 2023; 396:3809-3822. [PMID: 37354215 PMCID: PMC10643397 DOI: 10.1007/s00210-023-02573-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 06/11/2023] [Indexed: 06/26/2023]
Abstract
Ergometrine (6aR,9R)-N-((S)-1-hydroxypropan-2-yl)-7-methyl-4,6,6a,7,8,9-hexa-hydro-indolo-[4,3-fg]chinolin-9-carboxamide or lysergide acid β-ethanolamide or ergonovine) activates several types of serotonin and histamine receptors in the animal heart. We thus examined whether ergometrine can activate human serotonin 5-HT4 receptors (h5-HT4R) and/or human histamine H2 receptors (hH2R) in the heart of transgenic mice and/or in the human isolated atrium. Force of contraction or beating rates were studied in electrically stimulated left atrial or spontaneously beating right atrial preparations or spontaneously beating isolated retrogradely perfused hearts (Langendorff setup) of mice with cardiac specific overexpression of the h5-HT4R (5-HT4-TG) or of mice with cardiac specific overexpression of the hH2R (H2-TG) or in electrically stimulated human right atrial preparations obtained during cardiac surgery. Western blots to assess phospholamban (PLB) phosphorylation on serine 16 were performed. Ergometrine exerted concentration- and time-dependent positive inotropic effects and positive chronotropic effects in atrial preparations starting at 0.3 µM and reaching a plateau at 10 µM in H2-TGs (n = 7). This was accompanied by an increase in PLB phosphorylation at serine 16. Ergometrine up 10 µM failed to increase force of contraction in left atrial preparations from 5-HT4-TGs (n = 5). Ten micrometer ergometrine increased the force of contraction in isolated retrogradely perfused spontaneously beating heart preparations (Langendorff setup) from H2-TG but not 5-HT4-TG. In the presence of the phosphodiesterase inhibitor cilostamide (1 µM), ergometrine at 10 µM exerted positive inotropic effects in isolated electrically stimulated human right atrial preparations, obtained during cardiac surgery, and these effects were eliminated by 10 µM of the H2R antagonist cimetidine but not by 10 µM of the 5-HT4R antagonist tropisetron. Furthermore, ergometrine showed binding to human histamine H2 receptors (at 100 µM and 1 mM) using HEK cells in a recombinant expression system (pKi < 4.5, n = 3). In conclusion, we suggest that ergometrine is an agonist at cardiac human H2Rs.
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Affiliation(s)
- Hannes Jacob
- Institute for Pharmacology and Toxicology, Medical Faculty, Martin Luther University Halle-Wittenberg, Magdeburger Straße 4, 06097, Halle (Saale), Germany
| | - Pauline Braekow
- Institute for Pharmacology and Toxicology, Medical Faculty, Martin Luther University Halle-Wittenberg, Magdeburger Straße 4, 06097, Halle (Saale), Germany
| | - Britt Hofmann
- Department of Cardiac Surgery, Mid-German Heart Center, University Hospital Halle, Ernst Grube Straße 40, 06097, Halle (Saale), Germany
| | - Uwe Kirchhefer
- Institute for Pharmacology and Toxicology, Medical Faculty, Westfälische Wilhelms- Universität Münster, Domagkstraße 12, 48149, Münster, Germany
| | - Lisa Forster
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, 93040, Regensburg, Germany
| | - Denise Mönnich
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, 93040, Regensburg, Germany
| | - Laura J Humphrys
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, 93040, Regensburg, Germany
| | - Steffen Pockes
- Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, 93040, Regensburg, Germany
| | - Joachim Neumann
- Institute for Pharmacology and Toxicology, Medical Faculty, Martin Luther University Halle-Wittenberg, Magdeburger Straße 4, 06097, Halle (Saale), Germany.
| | - Ulrich Gergs
- Institute for Pharmacology and Toxicology, Medical Faculty, Martin Luther University Halle-Wittenberg, Magdeburger Straße 4, 06097, Halle (Saale), Germany
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Ryan GA, Crankshaw DJ, Morrison JJ. Effects of maternal parity on response of human myometrium to oxytocin and ergometrine in vitro. Eur J Obstet Gynecol Reprod Biol 2019; 242:99-102. [PMID: 31580965 DOI: 10.1016/j.ejogrb.2019.09.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/09/2019] [Accepted: 09/12/2019] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The aim of this study was to compare the effects of oxytocin and ergometrine on the intrinsic contractile parameters of human uterine smooth muscle at term between primiparous and multiparous women. STUDY DESIGN Myometrial biopsies were obtained from women undergoing planned caesarean section at term. The biopsies were dissected into eight uniform strips and mounted in tissue baths for isometric recording. The strips were challenged with increasing concentrations of oxytocin and ergometrine. Parameters of contractile activity, including mean contractile force (MCF) and maximum amplitude of contractions (MAMP) were recorded and analysed. Results were compared between primiparous (Group 1) and multiparous (Group 2) women. RESULTS Myometrial biopsies were obtained from n = 11 donors (88 tissue strips), of which n = 5 were Group 1 and n = 6 were Group 2. In relation to oxytocin, the MAMP value observed was significantly greater in Group 2 than in Group 1 (151 ± 18mN vs 67 ± 14mN, P < 0.01). Regarding ergometrine, the MCF response was greater in Group 2 samples (24 ± 10 mN) than that in Group 1 (18 ± 2mN) (P < 0.05). CONCLUSION Our findings highlight that women in a first pregnancy have a decreased response to both oxytocin and ergometrine in an in vitro setting when compared with women in a subsequent pregnancy, and this may have clinical implications regarding the management of postpartum haemorrhage in this cohort.
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Affiliation(s)
- Gillian A Ryan
- Department of Obstetrics and Gynaecology, National University of Ireland Galway, Galway University Hospital, Ireland; Lambe Institute for Translational Research, National University of Ireland, Galway, Ireland.
| | - Denis J Crankshaw
- Department of Obstetrics and Gynaecology, National University of Ireland Galway, Galway University Hospital, Ireland; Lambe Institute for Translational Research, National University of Ireland, Galway, Ireland
| | - John J Morrison
- Department of Obstetrics and Gynaecology, National University of Ireland Galway, Galway University Hospital, Ireland; Lambe Institute for Translational Research, National University of Ireland, Galway, Ireland
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García-Laínez G, Sancho M, García-Bayarri V, Orzáez M. Identification and validation of uterine stimulant methyl ergometrine as a potential inhibitor of caspase-1 activation. Apoptosis 2018; 22:1310-1318. [PMID: 28755170 PMCID: PMC5630661 DOI: 10.1007/s10495-017-1405-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Inflammasomes are intracellular multiprotein complexes of the innate immune system. Upon an inflammatory insult, such as infection or intracellular damage, a nucleotide-binding oligomerization domain-like receptor (NLR) sensor protein and the adaptor protein ASC (apoptosis-associated speck-like protein containing a caspase activation and recruitment domain) are assembled to activate protease procaspase-1. This protease processes pro-IL-1β and pro-IL-18 cytokines, which are released to induce the inflammatory response. De-regulation of inflammasome contributes to the progression of several diseases, such as Alzheimer’s disease, diabetes, cancer, inflammatory and autoimmune disorders. We herein describe the identification of methylergometrine (MEM), a drug currently used as a smooth muscle constrictor during postpartum hemorrhage, as an inhibitor of the inflammasome complex in ASC-mediated procaspase-1 activation screening. MEM inhibits the activation of the nucleotide-binding oligomerization domain-like receptor protein 1 (NLRP1) and nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3) inflammasomes in cellular models upon different pro-inflammatory stimuli. Our results suggest that MEM has the potential to reposition in the treatment of inflammatory diseases with the advantages of established safety and clinical data.
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Affiliation(s)
- Guillermo García-Laínez
- Laboratory of Peptide and Protein Chemistry, Centro de Investigación Príncipe Felipe, C/ Eduardo Primo Yúfera, 3, 46012, Valencia, Spain
| | - Mónica Sancho
- Laboratory of Peptide and Protein Chemistry, Centro de Investigación Príncipe Felipe, C/ Eduardo Primo Yúfera, 3, 46012, Valencia, Spain.
| | - Vanessa García-Bayarri
- Laboratory of Peptide and Protein Chemistry, Centro de Investigación Príncipe Felipe, C/ Eduardo Primo Yúfera, 3, 46012, Valencia, Spain
| | - Mar Orzáez
- Laboratory of Peptide and Protein Chemistry, Centro de Investigación Príncipe Felipe, C/ Eduardo Primo Yúfera, 3, 46012, Valencia, Spain.
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Nowak J, Woźniakiewicz M, Klepacki P, Sowa A, Kościelniak P. Identification and determination of ergot alkaloids in Morning Glory cultivars. Anal Bioanal Chem 2016; 408:3093-102. [PMID: 26873205 DOI: 10.1007/s00216-016-9322-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/17/2015] [Accepted: 01/11/2016] [Indexed: 11/02/2022]
Abstract
Seeds of plants from Ipomoea genera contain numerous ergot alkaloids, including psychoactive ergine and ergometrine, and are often abused as so-called "legal highs." In this work, an analytical method for determination of ergine and ergometrine, and identification of other alkaloids was developed, optimized, and validated. Three extraction techniques, ultrasound-assisted extraction in bath, or with sonotrode, and microwave-assisted extraction were evaluated, and it was concluded that ultrasonic bath is the most suitable technique for extraction of ergot alkaloids. The extraction method was later optimized using a Doehlert experimental design with response surface methodology and used together with the optimized LC-Q-TOF-MS method. The analytical procedure was validated in terms of recovery and matrix effect, repeatability, and intermediate precision. Limits of detection and quantification were 1.0 and 3.0 ng mL(-1), respectively, and were sufficient for determination of ergot alkaloids in Ipomoea seeds. The analysis revealed that from five kinds of seeds purchased from different vendors, only three contained ergot alkaloids. Concentration of alkaloids and their relative abundance was similar in samples representative for whole seeds packs; however, when single seeds were analyzed, significant discrepancies in ergine and ergometrine concentrations were detected.
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Paulke A, Kremer C, Wunder C, Wurglics M, Schubert-Zsilavecz M, Toennes SW. Studies on the alkaloid composition of the Hawaiian Baby Woodrose Argyreia nervosa, a common legal high. Forensic Sci Int 2015; 249:281-93. [PMID: 25747328 DOI: 10.1016/j.forsciint.2015.02.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Revised: 02/07/2015] [Accepted: 02/11/2015] [Indexed: 11/26/2022]
Abstract
Seeds from the Hawaiian Baby Woodrose Argyreia nervosa of different origin and labelling and with allegedly high levels of ergot alkaloids were analysed using high performance liquid chromatography-high resolution mass spectrometry (HPLC-HRMS/MS) technique. Lysergic acid amide (LSA), ergometrine, lysergol/elymoclavine/setoclavine, chanoclavine, lysergic acid and their respective stereoisomers were identified as well as penniclavine and lysergic acid α-hydroxyethylamide. In addition, methylergometrine, methysergide, and lysergylalanine were detected, some high molecular weight ergot alkaloid derivatives and hydroxyalanine derived ergopeptide fragments were detected indicating the presence of ergopeptides in the seeds. The results of the study demonstrate that the content of ergot alkaloids in Argyreia nervosa seeds depends on the quality of the material. For a consumer the quality of the seeds is unforeseeable. For the toxicological expert it is essential to investigate not only the identity of such a confiscated seed material, but also the various ergot alkaloid constituents to assess the hazardous nature and the toxic potential of the material.
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Affiliation(s)
- Alexander Paulke
- Institute of Legal Medicine, University of Frankfurt/Main, Kennedyallee 104, D-60596 Frankfurt/Main, Germany.
| | - Christian Kremer
- Institute of Legal Medicine, University of Frankfurt/Main, Kennedyallee 104, D-60596 Frankfurt/Main, Germany
| | - Cora Wunder
- Institute of Legal Medicine, University of Frankfurt/Main, Kennedyallee 104, D-60596 Frankfurt/Main, Germany
| | - Mario Wurglics
- Institute for Pharmaceutical Chemistry, University of Frankfurt/Main, Max-von-Laue-Str. 9, D-60438 Frankfurt/Main, Germany
| | - Manfred Schubert-Zsilavecz
- Institute for Pharmaceutical Chemistry, University of Frankfurt/Main, Max-von-Laue-Str. 9, D-60438 Frankfurt/Main, Germany
| | - Stefan W Toennes
- Institute of Legal Medicine, University of Frankfurt/Main, Kennedyallee 104, D-60596 Frankfurt/Main, Germany
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Ezeama CO, Eleje GU, Ezeama NN, Igwegbe AO, Ikechebelu JI, Ugboaja JO, Ezebialu IU, Eke AC. A comparison of prophylactic intramuscular ergometrine and oxytocin for women in the third stage of labor. Int J Gynaecol Obstet 2013; 124:67-71. [PMID: 24365208 DOI: 10.1016/j.ijgo.2013.07.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 07/07/2013] [Accepted: 09/26/2013] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To compare the efficacy and adverse effects of ergometrine and oxytocin given intramuscularly for the prevention of postpartum hemorrhage during the third stage of labor. METHODS The study included women with a singleton pregnancy of at least 28 weeks' gestation who had a vaginal delivery. High-risk pregnancies were excluded. Oxytocin (10 IU) or ergometrine (0.5mg) were administered intramuscularly in a blinded pattern immediately after delivery of the infant. An intention-to-treat analysis was performed. RESULTS Postpartum blood loss (301.8 ± 109.2 mL versus 287.1 ± 84.4 mL, P=0.011) and packed cell volume (30.7 ± 1.7% versus 31.6 ± 2.0%; Z=0.00; P=0.008) were considerably reduced among parturients who received intramuscular ergometrine. The rates of therapeutic oxytocics use, blood transfusion, placental retention, and manual removal of the placenta were significantly higher in the oxytocin group. No significant differences between the groups were observed in terms of adverse effects, with the exception of diastolic hypertension, which was more common in the ergometrine group (odds ratio, 0.00; 95% confidence interval, 0.00-0.75; P=0.007). CONCLUSION Intramuscular ergometrine is superior to intramuscular oxytocin in averting postpartum hemorrhage during the third stage of labor. There are no significant risks of adverse effects except for diastolic hypertension.
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Affiliation(s)
- Chukwuemeka O Ezeama
- Department of Obstetrics and Gynecology, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria
| | - George U Eleje
- Department of Obstetrics and Gynecology, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria.
| | - Nkiru N Ezeama
- Department of Community Medicine, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria
| | - Anthony O Igwegbe
- Department of Obstetrics and Gynecology, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria
| | - Joseph I Ikechebelu
- Department of Obstetrics and Gynecology, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria
| | - Joseph O Ugboaja
- Department of Obstetrics and Gynecology, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria
| | - Ifeanyichukwu U Ezebialu
- Department of Obstetrics and Gynecology, Anambra State University Teaching Hospital, Awka, Nigeria
| | - Ahizechukwu C Eke
- Department of Obstetrics and Gynecology, Michigan State University/Sparrow Hospital, Lansing, USA
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Hirabayashi Y, Fukuda H, Saitoh K, Shimizu R. Bronchospasm induced with ergometrine during high spinal anesthesia. J Anesth 1995; 9:198-199. [PMID: 28921295 DOI: 10.1007/bf02479858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/1994] [Accepted: 12/26/1994] [Indexed: 11/29/2022]
Affiliation(s)
- Yoshihiro Hirabayashi
- Department of Anesthesiology, Jichi Medical School, 3311-1 Yakushiji, Minamikawachi-machi, Kawachi-gun, 329-04, Tochigi, Japan
| | - Hirokazu Fukuda
- Department of Anesthesiology, Jichi Medical School, 3311-1 Yakushiji, Minamikawachi-machi, Kawachi-gun, 329-04, Tochigi, Japan
| | - Kazuhiko Saitoh
- Department of Anesthesiology, Jichi Medical School, 3311-1 Yakushiji, Minamikawachi-machi, Kawachi-gun, 329-04, Tochigi, Japan
| | - Reiju Shimizu
- Department of Anesthesiology, Jichi Medical School, 3311-1 Yakushiji, Minamikawachi-machi, Kawachi-gun, 329-04, Tochigi, Japan
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