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Ligresti A, De Petrocellis L, Di Marzo V. From Phytocannabinoids to Cannabinoid Receptors and Endocannabinoids: Pleiotropic Physiological and Pathological Roles Through Complex Pharmacology. Physiol Rev 2016; 96:1593-659. [DOI: 10.1152/physrev.00002.2016] [Citation(s) in RCA: 253] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Apart from having been used and misused for at least four millennia for, among others, recreational and medicinal purposes, the cannabis plant and its most peculiar chemical components, the plant cannabinoids (phytocannabinoids), have the merit to have led humanity to discover one of the most intriguing and pleiotropic endogenous signaling systems, the endocannabinoid system (ECS). This review article aims to describe and critically discuss, in the most comprehensive possible manner, the multifaceted aspects of 1) the pharmacology and potential impact on mammalian physiology of all major phytocannabinoids, and not only of the most famous one Δ9-tetrahydrocannabinol, and 2) the adaptive pro-homeostatic physiological, or maladaptive pathological, roles of the ECS in mammalian cells, tissues, and organs. In doing so, we have respected the chronological order of the milestones of the millennial route from medicinal/recreational cannabis to the ECS and beyond, as it is now clear that some of the early steps in this long path, which were originally neglected, are becoming important again. The emerging picture is rather complex, but still supports the belief that more important discoveries on human physiology, and new therapies, might come in the future from new knowledge in this field.
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Affiliation(s)
- Alessia Ligresti
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, Consiglio Nazionale delle Ricerche, Comprensorio Olivetti, Pozzuoli, Italy
| | - Luciano De Petrocellis
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, Consiglio Nazionale delle Ricerche, Comprensorio Olivetti, Pozzuoli, Italy
| | - Vincenzo Di Marzo
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, Consiglio Nazionale delle Ricerche, Comprensorio Olivetti, Pozzuoli, Italy
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Friedrich J, Khatib D, Parsa K, Santopietro A, Gallicano GI. The grass isn't always greener: The effects of cannabis on embryological development. BMC Pharmacol Toxicol 2016; 17:45. [PMID: 27680736 PMCID: PMC5041313 DOI: 10.1186/s40360-016-0085-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 08/24/2016] [Indexed: 12/14/2022] Open
Abstract
With the increasing publicity of marijuana due to recent legislation, it is pertinent that the effects of fetal exposure to the drug are assessed. While in utero cannabis exposure has been associated with early pregnancy failure, birth defects and developmental delay, the mechanisms of such outcomes are largely unexplained. Furthermore, the use of cannabinoids in cancer treatment via growth inhibition and apoptosis may indicate how cannabis exposure likely harms a growing fetus. Cannabinoid signaling is required for proper pre-implantation development, embryo transport to the uterus, and uterine receptivity during implantation. In post-implantation development, cannabinoid signaling functions in a multitude of pathways, including, but not limited to, folic acid, VEGF, PCNA, MAPK/ERK, and BDNF. Disrupting the normal activity of these pathways can significantly alter many vital in utero processes, including angiogenesis, cellular replication, tissue differentiation, and neural cognitive development. This paper aims to demonstrate the effects of cannabis exposure on a developing embryo in order to provide a molecular explanation for the adverse outcomes associated with cannabis use during pregnancy.
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Affiliation(s)
- Joseph Friedrich
- Department of Biochemistry and Molecular & Cellular biology, Georgetown University Medical Center, 3900 reservoir Rd. NW, Med/Dent Building NE205, Washington DC, 20057, USA
| | - Dara Khatib
- Department of Biochemistry and Molecular & Cellular biology, Georgetown University Medical Center, 3900 reservoir Rd. NW, Med/Dent Building NE205, Washington DC, 20057, USA
| | - Keon Parsa
- Department of Biochemistry and Molecular & Cellular biology, Georgetown University Medical Center, 3900 reservoir Rd. NW, Med/Dent Building NE205, Washington DC, 20057, USA
| | - Ariana Santopietro
- Department of Biochemistry and Molecular & Cellular biology, Georgetown University Medical Center, 3900 reservoir Rd. NW, Med/Dent Building NE205, Washington DC, 20057, USA
| | - G Ian Gallicano
- Department of Biochemistry and Molecular & Cellular biology, Georgetown University Medical Center, 3900 reservoir Rd. NW, Med/Dent Building NE205, Washington DC, 20057, USA.
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Cobellis G, Meccariello R, Chianese R, Chioccarelli T, Fasano S, Pierantoni R. Effects of Neuroendocrine CB1 Activity on Adult Leydig Cells. Front Endocrinol (Lausanne) 2016; 7:47. [PMID: 27375550 PMCID: PMC4891325 DOI: 10.3389/fendo.2016.00047] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 05/09/2016] [Indexed: 11/21/2022] Open
Abstract
Endocannabinoids control male reproduction acting at central and local level via cannabinoid receptors. The cannabinoid receptor CB1 has been characterized in the testis, in somatic and germ cells of mammalian and non-mammalian animal models, and its activity related to Leydig cell differentiation, steroidogenesis, spermiogenesis, sperm quality, and maturation. In this short review, we provide a summary of the insights concerning neuroendocrine CB1 activity in male reproduction focusing on adult Leydig cell ontogenesis and steroid biosynthesis.
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Affiliation(s)
- Gilda Cobellis
- Dipartimento di Medicina Sperimentale, Seconda Università di Napoli, Napoli, Italy
| | - Rosaria Meccariello
- Dipartimento di Scienze Motorie e del Benessere, Università di Napoli Parthenope, Napoli, Italy
| | - Rosanna Chianese
- Dipartimento di Medicina Sperimentale, Seconda Università di Napoli, Napoli, Italy
| | - Teresa Chioccarelli
- Dipartimento di Medicina Sperimentale, Seconda Università di Napoli, Napoli, Italy
| | - Silvia Fasano
- Dipartimento di Medicina Sperimentale, Seconda Università di Napoli, Napoli, Italy
| | - Riccardo Pierantoni
- Dipartimento di Medicina Sperimentale, Seconda Università di Napoli, Napoli, Italy
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Agirregoitia E, Totorikaguena L, Expósito A, Mendoza R, Matorras R, Agirregoitia N. Dynamic of expression and localization of cannabinoid-degrading enzymes FAAH and MGLL in relation to CB1 during meiotic maturation of human oocytes. Cell Tissue Res 2016; 365:393-401. [PMID: 26948343 DOI: 10.1007/s00441-016-2381-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 02/19/2016] [Indexed: 12/11/2022]
Abstract
The endogenous cannabinoid system has been characterized in some female reproductive organs but little is known about the expression and localization pattern of cannabinoid-degrading enzymes in relation to the CB1 cannabinoid receptor in human oocytes. In this study, we focus on the investigation of the presence and differential distribution of fatty acid amide hydrolase (FAAH) and monoglyceride lipase (MGLL) in relation to CB1 during the maturation of human oocytes. We used a total of 290 human oocytes not suitable for in vitro fertilization/intracytoplasmic sperm injection (ICSI): germinal-vesicle (GV) and metaphase-I (MI) stages and metaphase-II (MII) oocytes that had not developed into an embryo after ICSI. Cannabinoid-degrading enzymes and the cannabinoid CB1 receptor were present in human oocytes. Specifically, FAAH was detected in the periphery of the oocyte from the GV to MI stage and co-localized with CB1. Later, by the MII stage, FAAH was spread within the oocyte, whereas MGLL immunostaining was homogeneous across the oocyte at all stages of maturation and only overlapped with CB1 at the GV stage. This coordinated redistribution of cannabinoid system proteins suggests a role for this system in the maturation of the female gamete.
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Affiliation(s)
- Ekaitz Agirregoitia
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Barrio Sarriena s/n, Leioa, 48940, Bizkaia, Spain.
| | - Lide Totorikaguena
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Barrio Sarriena s/n, Leioa, 48940, Bizkaia, Spain
| | - Antonia Expósito
- Human Reproduction Unit, Cruces University Hospital, University of the Basque Country, Plaza de Cruces s/n, Barakaldo, 48903, Bizkaia, Spain
| | - Rosario Mendoza
- Human Reproduction Unit, Cruces University Hospital, University of the Basque Country, Plaza de Cruces s/n, Barakaldo, 48903, Bizkaia, Spain
| | - Roberto Matorras
- Human Reproduction Unit, Cruces University Hospital, University of the Basque Country, Plaza de Cruces s/n, Barakaldo, 48903, Bizkaia, Spain
| | - Naiara Agirregoitia
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Barrio Sarriena s/n, Leioa, 48940, Bizkaia, Spain
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Ciaramella V, Meccariello R, Chioccarelli T, Sirleto M, Fasano S, Pierantoni R, Chianese R. Anandamide acts via kisspeptin in the regulation of testicular activity of the frog, Pelophylax esculentus. Mol Cell Endocrinol 2016; 420:75-84. [PMID: 26586207 DOI: 10.1016/j.mce.2015.11.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 10/12/2015] [Accepted: 11/09/2015] [Indexed: 11/26/2022]
Abstract
In the frog Pelophylax esculentus, the endocannabinoid anandamide (AEA) modulates Gonadotropin Releasing Hormone (GnRH) system in vitro and down-regulates steroidogenic enzymes in vivo. Thus, male frogs were injected with AEA ± SR141716A, a cannabinoid receptor 1 (CB1) antagonist, to evaluate possible effects on GnRH and Kiss1/Gpr54 systems, gonadotropin receptors and steroid levels. In frog diencephalons, AEA negatively affected both GnRH and Kiss1/Gpr54 systems. In testis, AEA induced the expression of gonadotropin receptors, cb1, gnrh2 and gnrhr3 meanwhile reducing gnrhr2 mRNA and Kiss1/Gpr54 proteins. Furthermore, aromatase (Cyp19) expression increased in parallel to testosterone decrease and estradiol increase. In vitro treatment of testis with AEA revealed direct effects on Cyp19 and induced the expression of the AEA-degrading enzyme Faah. Lastly, AEA effects on Faah were counteracted by the antiestrogen ICI182780, indicating estradiol mediated effect. In conclusion, for the first time we show in a vertebrate that AEA regulates testicular activity through kisspeptin system.
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Affiliation(s)
- Vincenza Ciaramella
- Dipartimento di Medicina Sperimentale sez "F. Bottazzi", Seconda Università di Napoli, Via Costantinopoli 16, 80138 Napoli, Italy.
| | - Rosaria Meccariello
- Dipartimento di Scienze Motorie e del Benessere, Università di Napoli Parthenope, Via Medina 40, 80133 Napoli, Italy.
| | - Teresa Chioccarelli
- Dipartimento di Medicina Sperimentale sez "F. Bottazzi", Seconda Università di Napoli, Via Costantinopoli 16, 80138 Napoli, Italy.
| | - Monica Sirleto
- Dipartimento di Scienze Motorie e del Benessere, Università di Napoli Parthenope, Via Medina 40, 80133 Napoli, Italy.
| | - Silvia Fasano
- Dipartimento di Medicina Sperimentale sez "F. Bottazzi", Seconda Università di Napoli, Via Costantinopoli 16, 80138 Napoli, Italy.
| | - Riccardo Pierantoni
- Dipartimento di Medicina Sperimentale sez "F. Bottazzi", Seconda Università di Napoli, Via Costantinopoli 16, 80138 Napoli, Italy.
| | - Rosanna Chianese
- Dipartimento di Medicina Sperimentale sez "F. Bottazzi", Seconda Università di Napoli, Via Costantinopoli 16, 80138 Napoli, Italy.
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Marijuana, phytocannabinoids, the endocannabinoid system, and male fertility. J Assist Reprod Genet 2015; 32:1575-88. [PMID: 26277482 DOI: 10.1007/s10815-015-0553-8] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 07/27/2015] [Indexed: 02/06/2023] Open
Abstract
Marijuana has the highest consumption rate among all of the illicit drugs used in the USA, and its popularity as both a recreational and medicinal drug is increasing especially among men of reproductive age. Male factor infertility is on the increase, and the exposure to the cannabinoid compounds released by marijuana could be a contributing cause. The endocannabinoid system (ECS) is deeply involved in the complex regulation of male reproduction through the endogenous release of endocannabinoids and binding to cannabinoid receptors. Disturbing the delicate balance of the ECS due to marijuana use can negatively impact reproductive potential. Various in vivo and in vitro studies have reported on the empirical role that marijuana plays in disrupting the hypothalamus-pituitary-gonadal axis, spermatogenesis, and sperm function such as motility, capacitation, and the acrosome reaction. In this review, we highlight the latest evidence regarding the effect of marijuana use on male fertility and also provide a detailed insight into the ECS and its significance in the male reproductive system.
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Agirregoitia E, Ibarra-Lecue I, Totorikaguena L, Mendoza R, Expósito A, Matorras R, Urigüen L, Agirregoitia N. Dynamics of expression and localization of the cannabinoid system in granulosa cells during oocyte nuclear maturation. Fertil Steril 2015; 104:753-60. [PMID: 26144572 DOI: 10.1016/j.fertnstert.2015.06.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 06/09/2015] [Accepted: 06/13/2015] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To describe the expression of cannabinoid receptors CB1 and CB2 and cannabinoid-degrading enzymes fatty acid amide hydrolase (FAAH) and monoglyceride lipase (MGLL) in human granulosa cells and to investigate their differential distribution with respect to CB1 at various stages during the nuclear maturation of the oocyte. DESIGN Analysis of granulosa cells from germinal vesicle (GV), metaphase I (MI), and MII oocytes by quantitative reverse transcriptase-polymerase chain reaction, Western blot, and indirect immunofluorescence assays. SETTING Academic research laboratory. PATIENT(S) Patients from the Human Reproduction Unit of Cruces University Hospital undergoing intracytoplasmic sperm injection. INTERVENTION(S) We analyzed the granulosa cells of 300 oocytes from 53 patients. The oocyte maturation stages were 75 at GV stage, 51 at MI, and 174 at MII. MAIN OUTCOME MEASURE(S) The mRNA and protein expression of CB1, CB2, FAAH, and MGLL and localization in granulosa cells at each oocyte maturation stage. RESULT(S) CB1, FAAH, and MGLL are present in human granulosa cells during oocyte maturation, but the presence of CB2 receptor is not entirely clear in those cells. CB1 and FAAH were detected in the periphery of the granulosa cells from the GV to the MII oocytes, and they colocalized in some portions of the cell membrane. On the other hand, MGLL immunostaining was more homogeneous across the cell and overlapped with CB1 only weakly. CONCLUSION(S) The presence of the cannabinoid system in granulosa cells suggests a possible role of this system in the nuclear maturation of the oocyte.
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Affiliation(s)
- Ekaitz Agirregoitia
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain; BioCruces Health Research Institute, Barakaldo, Spain.
| | - Inés Ibarra-Lecue
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain
| | - Lide Totorikaguena
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain
| | - Rosario Mendoza
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain; Human Reproduction Unity, Department of Obstetrics and Gynecology, Cruces University Hospital, University of the Basque Country, Barakaldo, Spain
| | - Antonia Expósito
- BioCruces Health Research Institute, Barakaldo, Spain; Human Reproduction Unity, Department of Obstetrics and Gynecology, Cruces University Hospital, University of the Basque Country, Barakaldo, Spain
| | - Roberto Matorras
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain; Human Reproduction Unity, Department of Obstetrics and Gynecology, Cruces University Hospital, University of the Basque Country, Barakaldo, Spain
| | - Leyre Urigüen
- BioCruces Health Research Institute, Barakaldo, Spain; Department of Pharmacology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
| | - Naiara Agirregoitia
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain; BioCruces Health Research Institute, Barakaldo, Spain
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Maccarrone M. Endocannabinoid signaling in female reproductive events: a potential therapeutic target? Expert Opin Ther Targets 2015; 19:1423-7. [PMID: 26126134 DOI: 10.1517/14728222.2015.1062878] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Nearly 30 years after the discovery in 1964 of the psychoactive ingredient of cannabis (Cannabis sativa), Δ(9)-tetrahydrocannabinol, its endogenous counterparts were discovered and collectively termed endocannabinoids (eCBs): N-arachidonoylethanolamine (anandamide) in 1992 and 2-arachidonoylglycerol in 1995. Since then, intense research has identified additional eCBs and an ensemble of proteins that bind, synthesize and degrade them, the so-called eCB system. Altogether, these new compounds have been recognized as key mediators of several aspects of human pathophysiology, and in particular of female fertility. Here, the main features of the eCB system are presented, in order to put in a better perspective the relevance of eCB signaling in virtually all steps of human reproduction and to highlight emerging hopes that elements of this system might indeed become novel targets to combat fertility problems.
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Affiliation(s)
- Mauro Maccarrone
- a 1 Campus Bio-Medico University of Rome, Center of Integrated Research , Via Álvaro del Portillo 21, 00128 Rome, Italy +39 06 2254 19169 ; +39 06 2254 1456 ; .,b 2 European Center for Brain Research, Santa Lucia Foundation , Rome, Italy
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Maccarrone M, Bab I, Bíró T, Cabral GA, Dey SK, Di Marzo V, Konje JC, Kunos G, Mechoulam R, Pacher P, Sharkey KA, Zimmer A. Endocannabinoid signaling at the periphery: 50 years after THC. Trends Pharmacol Sci 2015; 36:277-96. [PMID: 25796370 DOI: 10.1016/j.tips.2015.02.008] [Citation(s) in RCA: 434] [Impact Index Per Article: 48.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 02/10/2015] [Accepted: 02/19/2015] [Indexed: 12/19/2022]
Abstract
In 1964, the psychoactive ingredient of Cannabis sativa, Δ(9)-tetrahydrocannabinol (THC), was isolated. Nearly 30 years later the endogenous counterparts of THC, collectively termed endocannabinoids (eCBs), were discovered: N-arachidonoylethanolamine (anandamide) (AEA) in 1992 and 2-arachidonoylglycerol (2-AG) in 1995. Since then, considerable research has shed light on the impact of eCBs on human health and disease, identifying an ensemble of proteins that bind, synthesize, and degrade them and that together form the eCB system (ECS). eCBs control basic biological processes including cell choice between survival and death and progenitor/stem cell proliferation and differentiation. Unsurprisingly, in the past two decades eCBs have been recognized as key mediators of several aspects of human pathophysiology and thus have emerged to be among the most widespread and versatile signaling molecules ever discovered. Here some of the pioneers of this research field review the state of the art of critical eCB functions in peripheral organs. Our community effort is aimed at establishing consensus views on the relevance of the peripheral ECS for human health and disease pathogenesis, as well as highlighting emerging challenges and therapeutic hopes.
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Affiliation(s)
- Mauro Maccarrone
- Center of Integrated Research, Campus Bio-Medico University, Rome, Italy; Center for Brain Research, Santa Lucia Foundation IRCCS, Rome, Italy.
| | - Itai Bab
- Bone Laboratory, Hebrew University Medical Faculty, Jerusalem, Israel; Institute for Drug Research, Hebrew University Medical Faculty, Jerusalem, Israel
| | - Tamás Bíró
- DE-MTA 'Lendület' Cellular Physiology Research Group, Department of Physiology, Medical Faculty, University of Debrecen, Debrecen, Hungary
| | - Guy A Cabral
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | - Sudhansu K Dey
- Division of Reproductive Sciences, Cincinnati Children's Research Foundation, Cincinnati, OH, USA
| | - Vincenzo Di Marzo
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, National Council of Research, Pozzuoli, Italy
| | - Justin C Konje
- Department of Obstetrics and Gynaecology, Sidra Medical and Research Center, Doha, Qatar
| | - George Kunos
- National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, USA
| | - Raphael Mechoulam
- Institute for Drug Research, Hebrew University Medical Faculty, Jerusalem, Israel
| | - Pal Pacher
- National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, USA
| | - Keith A Sharkey
- Hotchkiss Brain Institute, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Alberta, Canada
| | - Andreas Zimmer
- Institute of Molecular Psychiatry, University of Bonn, Bonn, Germany
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Abstract
The lasting research on the endocannabinoid system (ECS) has now provided solid and convincing evidence that proves the detrimental effects of recreational drug abuse (a growing habit among teenagers) on fertility. Endocannabinoids (eCBs) affect reproductive events from gametogenesis to fertilization, from embryo implantation to the final outcome of pregnancy and, thus, they have been proposed as suitable biomarkers to predict the reproductive potential of male and female gametes in clinical practice. Novel tools for reproductive medicine are highly sought after, and here we report the latest findings on the impact of the ECS on fertility, demonstrating how basic research can be translated into new medical strategies.
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Affiliation(s)
- Natalia Battista
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Monica Bari
- European Center for Brain Research/IRCCS Santa Lucia Foundation, Rome, Italy
- Department of Experimental Medicine and Surgery, Tor Vergata University of Rome, Rome, Italy
| | - Mauro Maccarrone
- European Center for Brain Research/IRCCS Santa Lucia Foundation, Rome, Italy.
- School of Medicine and Center of Integrated Research, Campus Bio-Medico University of Rome, Via Alvaro del Portillo 21, 00128, Rome, Italy.
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61
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Do some addictions interfere with fertility? Fertil Steril 2015; 103:22-6. [DOI: 10.1016/j.fertnstert.2014.11.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 10/31/2014] [Accepted: 11/04/2014] [Indexed: 01/08/2023]
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Fügedi G, Molnár M, Rigó J, Schönléber J, Kovalszky I, Molvarec A. Increased placental expression of cannabinoid receptor 1 in preeclampsia: an observational study. BMC Pregnancy Childbirth 2014; 14:395. [PMID: 25444073 PMCID: PMC4264532 DOI: 10.1186/s12884-014-0395-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 11/18/2014] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The endocannabinoid system plays a key role in female reproduction, including implantation, decidualization and placentation. In the present study, we aimed to analyze cannabinoid receptor 1 (CB1), CB2 and fatty acid amid hydrolase (FAAH) expressions and localization in normal and preeclamptic placenta, in order to determine whether placental endocannabinoid expression pattern differs between normal pregnancy and preeclampsia. METHODS Eighteen preeclamptic patients and 18 normotensive, healthy pregnant women with uncomplicated pregnancies were involved in our case-control study. We determined CB1, CB2 and FAAH expressions by Western blotting and immunohistochemistry in placental samples collected directly after Cesarean section. RESULTS CB1 expression semi-quantified by Western blotting was significantly higher in preeclamptic placenta, and these findings were confirmed by immunohistochemistry. CB1 immunoreactivity was markedly stronger in syncytiotrophoblasts, the mesenchymal core, decidua, villous capillary endothelial and smooth muscle cells, as well as in the amnion in preeclamptic samples compared to normal pregnancies. However, we did not find significant differences between preeclamptic and normal placenta in terms of CB2 and FAAH expressions and immunoreactivity. CONCLUSIONS We observed markedly higher expression of CB1 protein in preeclamptic placental tissue. Increased CB1 expression might cause abnormal decidualization and impair trophoblast invasion, thus being involved in the pathogenesis of preeclampsia. Nevertheless, we did not find significant differences between preeclamptic and normal placental tissue regarding CB2 and FAAH expressions. While the detailed pathogenesis of preeclampsia is still unclear, the endocannabinoid system could play a role in the development of the disease.
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Affiliation(s)
- Gergely Fügedi
- First Department of Obstetrics and Gynecology, Semmelweis University, Baross utca 27, Budapest, H-1088, Hungary.
| | - Miklós Molnár
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary.
| | - János Rigó
- First Department of Obstetrics and Gynecology, Semmelweis University, Baross utca 27, Budapest, H-1088, Hungary.
| | - Júlia Schönléber
- First Department of Obstetrics and Gynecology, Semmelweis University, Baross utca 27, Budapest, H-1088, Hungary.
| | - Ilona Kovalszky
- First Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary.
| | - Attila Molvarec
- First Department of Obstetrics and Gynecology, Semmelweis University, Baross utca 27, Budapest, H-1088, Hungary.
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Wysokiński A, Kowalski ML, Kłoszewska I. Serum levels of desacyl ghrelin in patients with schizophrenia on clozapine monotherapy. Psychiatry Clin Neurosci 2014; 68:833-840. [PMID: 24773632 DOI: 10.1111/pcn.12199] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 03/19/2014] [Accepted: 04/23/2014] [Indexed: 01/03/2023]
Abstract
AIM Desacyl ghrelin is a hormone that might be a functional inhibitor of ghrelin, a potent hunger-stimulating peptide. METHODS We determined fasting serum desacyl ghrelin levels in 24 subjects with schizophrenia on clozapine monotherapy and 24 healthy, age- and sex-matched controls. Biochemical and anthropometric measurements were combined with body composition determined using bioelectric impedance analysis. RESULTS There were no differences in desacyl ghrelin levels between patients taking clozapine and the control group (272.09 ± 137.96 vs 259.62 ± 140.91 pg/mL, z = 0.17, P = 0.87). In the clozapine group, there were no differences between men and women for ghrelin levels (246.66 ± 123.17 vs 295.39 ± 151.77 pg/mL, z = -0.98, P = 0.32). In the clozapine group, fasting serum levels of ghrelin negatively correlated with waist-to-hip ratio (WHR) (r = -0.45, P = 0.03) and ionized calcium (r = -0.45, P = 0.03). Levels of ghrelin were lower in patients with WHR above World Health Organization-defined cut-off points (246.84 ± 114.34 [Q1 = 152.18, Q2 = 220.92, Q3 = 327.85] vs 400.30 ± 123.36 [Q1 = 283.73, Q2 = 414.03, Q3 = 485.8] pg/mL, z = 2.52, P = 0.01). In the clozapine group, there were no correlation with age, height, weight, body mass index, abdominal circumference, waist circumference, hip circumference, WHR, blood pressure, total cholesterol, high-density lipoproteins, low-density lipoproteins, triglycerides, uric acid, homocysteine, glucose, insulin, clozapine dose, duration of treatment with antipsychotics, duration of treatment with clozapine, total fat, target fat, basal metabolic rate, target weight, lean weight, body water, homoeostasis model assessment of insulin resistance (HOMA) 1-IR, HOMA2-IR and quantitative insulin sensitivity check index. CONCLUSION Based on our results, we cannot conclude that treatment with clozapine affects levels of desacyl ghrelin. Also, in our study population we did not confirm previously described associations between desacyl ghrelin and various metabolic parameters.
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Affiliation(s)
- Adam Wysokiński
- Department of Old Age Psychiatry and Psychotic Disorders, Medical University of Lodz, Lodz, Poland
| | - Marek L Kowalski
- Department of Immunology, Rheumatology and Allergy, Medical University of Lodz, Lodz, Poland
| | - Iwona Kłoszewska
- Department of Old Age Psychiatry and Psychotic Disorders, Medical University of Lodz, Lodz, Poland
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Chianese R, Ciaramella V, Fasano S, Pierantoni R, Meccariello R. Hypothalamus-pituitary axis: an obligatory target for endocannabinoids to inhibit steroidogenesis in frog testis. Gen Comp Endocrinol 2014; 205:88-93. [PMID: 24566122 DOI: 10.1016/j.ygcen.2014.02.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 02/13/2014] [Indexed: 11/29/2022]
Abstract
Endocannabinoids - primarily anandamide (AEA) and 2-arachidonoylglycerol (2-AG) - are lipophilic molecules that bind to cannabinoid receptors (CB1 and CB2). They affect neuroendocrine activity inhibiting gonadotropin releasing hormone (GnRH) secretion and testosterone production in rodents, through a molecular mechanism supposed to be hypothalamus dependent. In order to investigate such a role, we choose the seasonal breeder, the anuran amphibian Rana esculenta, an experimental model in which components of the endocannabinoid system have been characterized. In February, at the onset of a new spermatogenetic wave, we carried out in vitro incubations of frog testis with AEA, at 10(-9)M dose. Such a treatment had no effect on the expression of cytochrome P450 17alpha hydroxylase/17,20 lyase (cyp17) nor 3-β-hydroxysteroid dehydrogenase/Δ-5-4 isomerase (3β-HSD), key enzymes of steroidogenesis. To understand whether or not the functionality of the hypothalamus-pituitary axis could be essential to support the role of endocannabinoids in steroidogenesis, frogs were injected with AEA, at 10(-8)M dose. Differently from in vitro experiment, the in vivo administration of AEA reduced the expression of cyp17 and 3β-HSD. Whereas the effect on 3β-HSD was counteracted by SR141716A (Rimonabant) - a selective antagonist of CB1, thus indicating a CB1 dependent modulation - the effect on cyp17 was not, suggesting a possible involvement of receptors other than CB1, probably the type-1 vanilloid receptor (TRPV1), since AEA works as an endocannabinoid and an endovanilloid as well. In conclusion our results indicate that endocannabinoids, via CB1, inhibit the expression of 3β-HSD in frog testis travelling along the hypothalamus-pituitary axis.
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Affiliation(s)
- Rosanna Chianese
- Dipartimento di Medicina Sperimentale, Seconda Università degli Studi di Napoli, Italy
| | - Vincenza Ciaramella
- Dipartimento di Medicina Sperimentale, Seconda Università degli Studi di Napoli, Italy
| | - Silvia Fasano
- Dipartimento di Medicina Sperimentale, Seconda Università degli Studi di Napoli, Italy
| | - Riccardo Pierantoni
- Dipartimento di Medicina Sperimentale, Seconda Università degli Studi di Napoli, Italy.
| | - Rosaria Meccariello
- Dipartimento di Scienze Motorie e del Benessere, Università di Napoli Parthenope, Italy
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Chen Y, Kong S, Tang X, Fu Y, Wang B, Zhang S, Wang H. Preimplantation Mouse Embryo Is a Target for Opioid Ligand-Receptor Signaling1. Biol Reprod 2014; 91:4. [DOI: 10.1095/biolreprod.114.118083] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Sun X, Dey SK. Synthetic cannabinoids and potential reproductive consequences. Life Sci 2014; 97:72-7. [PMID: 23827241 PMCID: PMC3823745 DOI: 10.1016/j.lfs.2013.06.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 06/13/2013] [Accepted: 06/18/2013] [Indexed: 11/18/2022]
Abstract
Increases in emergency room visits due to abuse of designer drugs, popularly known by the street names "K2" and "Spice," are a cause for social, judicial, and clinical concerns. The psychoactive components in these herbal drugs mainly consist of different synthetic cannabinoids, and users of these street drugs are primarily within the age group of 12 to 20years old. The abusive use of synthetic cannabinoids results in anxiety, nausea, vomiting, tachycardia, elevated blood pressure, tremors, seizures, hallucinations, and paranoid behavior, but the effects of maternal use of synthetic cannabinoids during pregnancy are ambiguous due to limited studies in humans and a relative short history of the drugs. In this review, we discuss the known and potential adverse effects of synthetic cannabinoids on human pregnancy using knowledge gathered from studies in mice and limited studies in humans. In mice, multiple sites and stages of pregnancy are potential targets of synthetic cannabinoids, including preimplantation embryo development, oviductal embryo transport, implantation, placentation, and parturition. It is anticipated that maternal use of synthetic cannabinoids would result in severely compromised female fertility and pregnancy outcome.
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Affiliation(s)
- Xiaofei Sun
- Division of Reproductive Sciences, Perinatal Institute, Cincinnati Children's Research Foundation, Cincinnati, OH 45229, USA
| | - Sudhansu K Dey
- Division of Reproductive Sciences, Perinatal Institute, Cincinnati Children's Research Foundation, Cincinnati, OH 45229, USA.
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Rapino C, Battista N, Bari M, Maccarrone M. Endocannabinoids as biomarkers of human reproduction. Hum Reprod Update 2014; 20:501-16. [PMID: 24516083 DOI: 10.1093/humupd/dmu004] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Infertility is a condition of the reproductive system that affects ∼10-15% of couples attempting to conceive a baby. More than half of all cases of infertility are a result of female conditions, while the remaining cases can be attributed to male factors, or to a combination of both. The search for suitable biomarkers of pregnancy outcome is a challenging issue in human reproduction, aimed at identifying molecules with predictive significance of the reproductive potential of male and female gametes. Among the various candidates, endocannabinoids (eCBs), and in particular anandamide (AEA), represent potential biomarkers of human fertility disturbances. Any perturbation of the balance between synthesis and degradation of eCBs will result in local changes of their tone in human female and male reproductive tracts, which in turn regulates various pathophysiological processes, oocyte and sperm maturation included. METHODS PubMed and Web of Science databases were searched for papers using relevant keywords like 'biomarker', 'endocannabinoid', 'infertility', 'pregnancy' and 'reproduction'. RESULTS In this review, we discuss different studies on the measurements of AEA and related eCBs in human reproductive cells, tissues and fluids, where the local contribution of these bioactive lipids could be critical in ensuring normal sperm fertilizing ability and pregnancy. CONCLUSION Based on the available data, we suggest that the AEA tone has the potential to be exploited as a novel diagnostic biomarker of infertility, to be used in association with assays of conventional hormones (e.g. progesterone, β-chorionic gonadotrophin) and semen analysis. However further quantitative research of its predictive capacity is required.
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Affiliation(s)
- Cinzia Rapino
- Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy StemTeCh Group, Chieti, Italy
| | - Natalia Battista
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy European Center for Brain Research/IRCCS Santa Lucia Foundation, Rome, Italy
| | - Monica Bari
- European Center for Brain Research/IRCCS Santa Lucia Foundation, Rome, Italy Department of Experimental Medicine and Surgery, Tor Vergata University of Rome, Rome, Italy
| | - Mauro Maccarrone
- European Center for Brain Research/IRCCS Santa Lucia Foundation, Rome, Italy Center of Integrated Research, Campus Bio-Medico University of Rome, Rome, Italy
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Bovolin P, Cottone E, Pomatto V, Fasano S, Pierantoni R, Cobellis G, Meccariello R. Endocannabinoids are Involved in Male Vertebrate Reproduction: Regulatory Mechanisms at Central and Gonadal Level. Front Endocrinol (Lausanne) 2014; 5:54. [PMID: 24782832 PMCID: PMC3995072 DOI: 10.3389/fendo.2014.00054] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 03/31/2014] [Indexed: 12/12/2022] Open
Abstract
Endocannabinoids (eCBs) are natural lipids regulating a large array of physiological functions and behaviors in vertebrates. The eCB system is highly conserved in evolution and comprises several specific receptors (type-1 and type-2 cannabinoid receptors), their endogenous ligands (e.g., anandamide and 2-arachidonoylglycerol), and a number of biosynthetic and degradative enzymes. In the last few years, eCBs have been described as critical signals in the control of male and female reproduction at multiple levels: centrally, by targeting hypothalamic gonadotropin-releasing-hormone-secreting neurons and pituitary, and locally, with direct effects on the gonads. These functions are supported by the extensive localization of cannabinoid receptors and eCB metabolic enzymes at different levels of the hypothalamic-pituitary-gonadal axis in mammals, as well as bonyfish and amphibians. In vivo and in vitro studies indicate that eCBs centrally regulate gonadal functions by modulating the gonadotropin-releasing hormone-gonadotropin-steroid network through direct and indirect mechanisms. Several proofs of local eCB regulation have been found in the testis and male genital tracts, since eCBs control Sertoli and Leydig cells activity, germ cell progression, as well as the acquisition of sperm functions. A comparative approach usually is a key step in the study of physiological events leading to the building of a general model. Thus, in this review, we summarize the action of eCBs at different levels of the male reproductive axis, with special emphasis, where appropriate, on data from non-mammalian vertebrates.
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Affiliation(s)
- Patrizia Bovolin
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
- Neuroscience Institute of Turin, University of Turin, Turin, Italy
- *Correspondence: Patrizia Bovolin, Department of Life Sciences and Systems Biology, University of Turin, via Accademia Albertina 13, 10123 Turin, Italy e-mail:
| | - Erika Cottone
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Valentina Pomatto
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Silvia Fasano
- Dipartimento di Medicina Sperimentale, Seconda Università di Napoli, Naples, Italy
| | - Riccardo Pierantoni
- Dipartimento di Medicina Sperimentale, Seconda Università di Napoli, Naples, Italy
| | - Gilda Cobellis
- Dipartimento di Medicina Sperimentale, Seconda Università di Napoli, Naples, Italy
| | - Rosaria Meccariello
- Dipartimento di Scienze Motorie e del Benessere, Università di Napoli Parthenope, Naples, Italy
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Meccariello R, Battista N, Bradshaw HB, Wang H. Updates in reproduction coming from the endocannabinoid system. Int J Endocrinol 2014; 2014:412354. [PMID: 24550985 PMCID: PMC3914453 DOI: 10.1155/2014/412354] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 11/20/2013] [Accepted: 12/04/2013] [Indexed: 12/26/2022] Open
Abstract
The endocannabinoid system (ECS) is an evolutionarily conserved master system deeply involved in the central and local control of reproductive functions in both sexes. The tone of these lipid mediators-deeply modulated by the activity of biosynthetic and hydrolyzing machineries-regulates reproductive functions from gonadotropin discharge and steroid biosynthesis to the formation of high quality gametes and successful pregnancy. This review provides an overview on ECS and reproduction and focuses on the insights in the regulation of endocannabinoid production by steroids, in the regulation of male reproductive activity, and in placentation and parturition. Taken all together, evidences emerge that the activity of the ECS is crucial for procreation and may represent a target for the therapeutic exploitation of infertility.
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Affiliation(s)
- Rosaria Meccariello
- Dipartimento di Scienze Motorie e del Benessere, Università di Napoli Parthenope, via Medina 40, 80133 Napoli, Italy
- *Rosaria Meccariello:
| | - Natalia Battista
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
- European Center for Brain Research (CERC), Santa Lucia Foundation, 00143 Rome, Italy
| | - Heather B. Bradshaw
- Department of Psychological and Brain Sciences, The Kinsey Institute for Research in Sex, Gender, and Reproduction, Indiana University, Bloomington, IN 47405, USA
| | - Haibin Wang
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
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Grimaldi P, Di Giacomo D, Geremia R. The endocannabinoid system and spermatogenesis. Front Endocrinol (Lausanne) 2013; 4:192. [PMID: 24379805 PMCID: PMC3864102 DOI: 10.3389/fendo.2013.00192] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 11/29/2013] [Indexed: 12/13/2022] Open
Abstract
Spermatogenesis is a complex process in which male germ cells undergo a mitotic phase followed by meiosis and by a morphogenetic process to form mature spermatozoa. Spermatogenesis is under the control of gonadotropins, steroid hormones and it is modulated by a complex network of autocrine and paracrine factors. These modulators ensure the correct progression of germ cell differentiation to form mature spermatozoa. Recently, it has been pointed out the relevance of endocannabinoids as critical modulators of male reproduction. Endocannabinoids are natural lipids able to bind to cannabinoid receptors and whose levels are regulated by specific biosynthetic and degradative enzymes. Together with their receptors and metabolic enzymes, they form the "endocannabinoid system" (ECS). In male reproductive tracts, they affect Sertoli cell activities, Leydig cell proliferation, germ cell differentiation, sperm motility, capacitation, and acrosome reaction. The ECS interferes with the pituitary-gonadal axis, and an intricate crosstalk between ECS and steroid hormones has been highlighted. This mini-review will focus on the involvement of the ECS in the control of spermatogenesis and on the interaction between ECS and steroid hormones.
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Affiliation(s)
- Paola Grimaldi
- Section of Anatomy, Department of Biomedicine and Prevention, University of Rome “Tor Vergata”, Rome, Italy
- *Correspondence: Paola Grimaldi, Section of Anatomy, Department of Biomedicine and Prevention, University of Rome “Tor Vergata”, Via Montpellier 1, Rome 00133, Italy e-mail:
| | - Daniele Di Giacomo
- Section of Anatomy, Department of Biomedicine and Prevention, University of Rome “Tor Vergata”, Rome, Italy
| | - Raffaele Geremia
- Section of Anatomy, Department of Biomedicine and Prevention, University of Rome “Tor Vergata”, Rome, Italy
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71
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Melford SE, Taylor AH, Konje JC. Of mice and (wo)men: factors influencing successful implantation including endocannabinoids. Hum Reprod Update 2013; 20:415-28. [DOI: 10.1093/humupd/dmt060] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Shabani M, Mahnam A, Sheibani V, Janahmadi M. Alterations in the Intrinsic Burst Activity of Purkinje Neurons in Offspring Maternally Exposed to the CB1 Cannabinoid Agonist WIN 55212-2. J Membr Biol 2013; 247:63-72. [DOI: 10.1007/s00232-013-9612-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 10/25/2013] [Indexed: 11/28/2022]
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Galve-Roperh I, Chiurchiù V, Díaz-Alonso J, Bari M, Guzmán M, Maccarrone M. Cannabinoid receptor signaling in progenitor/stem cell proliferation and differentiation. Prog Lipid Res 2013; 52:633-50. [PMID: 24076098 DOI: 10.1016/j.plipres.2013.05.004] [Citation(s) in RCA: 206] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Accepted: 05/28/2013] [Indexed: 12/11/2022]
Abstract
Cannabinoids, the active components of cannabis (Cannabis sativa) extracts, have attracted the attention of human civilizations for centuries, much earlier than the discovery and characterization of their substrate of action, the endocannabinoid system (ECS). The latter is an ensemble of endogenous lipids, their receptors [in particular type-1 (CB1) and type-2 (CB2) cannabinoid receptors] and metabolic enzymes. Cannabinoid signaling regulates cell proliferation, differentiation and survival, with different outcomes depending on the molecular targets and cellular context involved. Cannabinoid receptors are expressed and functional from the very early developmental stages, when they regulate embryonic and trophoblast stem cell survival and differentiation, and thus may affect the formation of manifold adult specialized tissues derived from the three different germ layers (ectoderm, mesoderm and endoderm). In the ectoderm-derived nervous system, both CB1 and CB2 receptors are present in neural progenitor/stem cells and control their self-renewal, proliferation and differentiation. CB1 and CB2 show opposite patterns of expression, the former increasing and the latter decreasing along neuronal differentiation. Recently, endocannabinoid (eCB) signaling has also been shown to regulate proliferation and differentiation of mesoderm-derived hematopoietic and mesenchymal stem cells, with a key role in determining the formation of several cell types in peripheral tissues, including blood cells, adipocytes, osteoblasts/osteoclasts and epithelial cells. Here, we will review these new findings, which unveil the involvement of eCB signaling in the regulation of progenitor/stem cell fate in the nervous system and in the periphery. The developmental regulation of cannabinoid receptor expression and cellular/subcellular localization, together with their role in progenitor/stem cell biology, may have important implications in human health and disease.
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Affiliation(s)
- Ismael Galve-Roperh
- Department of Biochemistry and Molecular Biology I, School of Biology, Complutense University, IUIN, CIBERNED and IRYCIS, 28040 Madrid, Spain.
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Gervasi MG, Marczylo TH, Lam PM, Rana S, Franchi AM, Konje JC, Perez-Martinez S. Anandamide levels fluctuate in the bovine oviduct during the oestrous cycle. PLoS One 2013; 8:e72521. [PMID: 23977311 PMCID: PMC3745412 DOI: 10.1371/journal.pone.0072521] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 07/18/2013] [Indexed: 12/16/2022] Open
Abstract
Mammalian oviduct acts as a reservoir for spermatozoa and provides an environment in which they may compete for the opportunity to fertilize the oocyte. Whilst in the oviduct spermatozoa undergo capacitation essential for fertilization. Sperm-oviduct interaction is essential for sperm capacitation and is a tightly regulated process influenced by the local microenvironment. Previously we reported that the endocannabinoid anandamide (AEA) regulates sperm release from epithelial oviductal cells by promoting sperm capacitation. The aims of this work were to measure the AEA content and to characterize the main AEA metabolic pathway in the bovine oviduct and determine how these change through the oestrous cycle. In this study, the levels of AEA and two other N-acylethanolamines, N-oleoylethanolamine and N-palmitoylethanolamine, were measured in bovine oviduct collected during different stages of oestrous cycle by ultra high performance liquid chromatography tandem mass spectrometry. Results indicated that intracellular oviductal epithelial levels of all three N-acylethanolamines fluctuate during oestrous cycle. Anandamide from oviductal fluid also varied during oestrous cycle, with the highest values detected during the periovulatory period. Endocannabinoid levels from ipsilateral oviduct to ovulation were higher than those detected in the contralateral one, suggesting that levels of oviductal AEA may be regulated by ovarian hormones. The expression and localization of N-acylethanolamines metabolizing enzymes in bovine oviduct were also determined by RT-PCR, Western blot, and immunohistochemistry but no change was found during the oestrous cycle. Furthermore, nanomolar levels of AEA were detected in follicular fluids, suggesting that during ovulation the mature follicle may contribute to oviductal AEA levels to create an endocannabinoid gradient conducive to the regulation of sperm function for successful fertilization.
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Affiliation(s)
- Maria Gracia Gervasi
- Laboratory de Biología de la Reproducción en Mamíferos, Centro de Estudios Farmacológicos y Botánicos (Consejo Nacional de Investigaciones Científicas y Técnicas), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Timothy H. Marczylo
- Endocannabinoid Research Group, Reproductive Science Section, Department of Cancer Studies and Molecular Medicine, University of Leicester, Leicester, United Kingdom
| | - Patricia M. Lam
- Endocannabinoid Research Group, Reproductive Science Section, Department of Cancer Studies and Molecular Medicine, University of Leicester, Leicester, United Kingdom
| | - Shashi Rana
- Endocannabinoid Research Group, Reproductive Science Section, Department of Cancer Studies and Molecular Medicine, University of Leicester, Leicester, United Kingdom
| | - Ana M. Franchi
- Laboratory Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos (Consejo Nacional de Investigaciones Científicas y Técnicas), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Justin C. Konje
- Endocannabinoid Research Group, Reproductive Science Section, Department of Cancer Studies and Molecular Medicine, University of Leicester, Leicester, United Kingdom
- * E-mail: (SPM); (JCK)
| | - Silvina Perez-Martinez
- Laboratory de Biología de la Reproducción en Mamíferos, Centro de Estudios Farmacológicos y Botánicos (Consejo Nacional de Investigaciones Científicas y Técnicas), Universidad de Buenos Aires, Buenos Aires, Argentina
- * E-mail: (SPM); (JCK)
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Wasserman MD, Milton K, Chapman CA. The Roles of Phytoestrogens in Primate Ecology and Evolution. INT J PRIMATOL 2013. [DOI: 10.1007/s10764-013-9699-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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76
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Amoako AA, Marczylo TH, Marczylo EL, Elson J, Willets JM, Taylor AH, Konje JC. Anandamide modulates human sperm motility: implications for men with asthenozoospermia and oligoasthenoteratozoospermia. Hum Reprod 2013; 28:2058-66. [DOI: 10.1093/humrep/det232] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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77
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Pacher P, Kunos G. Modulating the endocannabinoid system in human health and disease--successes and failures. FEBS J 2013; 280:1918-43. [PMID: 23551849 PMCID: PMC3684164 DOI: 10.1111/febs.12260] [Citation(s) in RCA: 270] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 03/11/2013] [Accepted: 03/19/2013] [Indexed: 12/20/2022]
Abstract
The discovery of the endocannabinoid system, comprising the G-protein coupled cannabinoid 1 and 2 receptors (CB1/2), their endogenous lipid ligands or endocannabinoids, and synthetic and metabolizing enzymes, has triggered an avalanche of experimental studies implicating the endocannabinoid system in a growing number of physiological/pathological functions. These studies have also suggested that modulating the activity of the endocannabinoid system holds therapeutic promise for a broad range of diseases, including neurodegenerative, cardiovascular and inflammatory disorders; obesity/metabolic syndrome; cachexia; chemotherapy-induced nausea and vomiting; and tissue injury and pain, amongst others. However, clinical trials with globally acting CB1 antagonists in obesity/metabolic syndrome, and other studies with peripherally-restricted CB1/2 agonists and inhibitors of the endocannabinoid metabolizing enzyme in pain, have introduced unexpected complexities, suggesting that a better understanding of the pathophysiological role of the endocannabinoid system is required to devise clinically successful treatment strategies.
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Affiliation(s)
- Pál Pacher
- Laboratory of Physiologic Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892-9413, USA.
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Mechanisms of implantation: strategies for successful pregnancy. Nat Med 2013; 18:1754-67. [PMID: 23223073 DOI: 10.1038/nm.3012] [Citation(s) in RCA: 859] [Impact Index Per Article: 78.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 10/16/2012] [Indexed: 12/14/2022]
Abstract
Physiological and molecular processes initiated during implantation for pregnancy success are complex but highly organized. This review primarily highlights adverse ripple effects arising from defects during the peri-implantation period that perpetuate throughout pregnancy. These defects are reflected in aberrations in embryo spacing, decidualization, placentation and intrauterine embryonic growth, manifesting in preeclampsia, miscarriages and/or preterm birth. Understanding molecular signaling networks that coordinate strategies for successful implantation and decidualization may lead to approaches to improve the outcome of natural pregnancy and pregnancy conceived from in vitro fertilization.
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Abstract
Endocannabinoids are endogenous ligands of cannabinoid, vanilloid and peroxisome proliferator-activated receptors that activate multiple signal transduction pathways. Together with their receptor and the enzymes responsible for their synthesis and degradation, these compounds constitute the endocannabinoid system that has been recently shown to play, in humans, an important role in modulating several central and peripheral functions including reproduction. Given the relevance of the system, drugs that are able to interfere with the activity of endocannabinoids are currently considered as candidates for the treatment of various diseases. In this review, we will summarise the current knowledge regarding the effects of endocannabinoids in female reproductive organs. In particular, we will focus on some newly reported mechanisms that can affect endometrial plasticity both in physiological and in pathological conditions.
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Affiliation(s)
- Anna Maria Di Blasio
- Molecular Biology Laboratory, Istituto Auxologico Italiano, Via Zucchi 18, 20095 Cusano Milanino, Milano, Italy.
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80
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Zhang S, Lin H, Kong S, Wang S, Wang H, Wang H, Armant DR. Physiological and molecular determinants of embryo implantation. Mol Aspects Med 2013; 34:939-80. [PMID: 23290997 DOI: 10.1016/j.mam.2012.12.011] [Citation(s) in RCA: 346] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 12/25/2012] [Accepted: 12/26/2012] [Indexed: 01/19/2023]
Abstract
Embryo implantation involves the intimate interaction between an implantation-competent blastocyst and a receptive uterus, which occurs in a limited time period known as the window of implantation. Emerging evidence shows that defects originating during embryo implantation induce ripple effects with adverse consequences on later gestation events, highlighting the significance of this event for pregnancy success. Although a multitude of cellular events and molecular pathways involved in embryo-uterine crosstalk during implantation have been identified through gene expression studies and genetically engineered mouse models, a comprehensive understanding of the nature of embryo implantation is still missing. This review focuses on recent progress with particular attention to physiological and molecular determinants of blastocyst activation, uterine receptivity, blastocyst attachment and uterine decidualization. A better understanding of underlying mechanisms governing embryo implantation should generate new strategies to rectify implantation failure and improve pregnancy rates in women.
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Affiliation(s)
- Shuang Zhang
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, PR China
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81
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Cottone E, Pomatto V, Bovolin P. Role of the endocannabinoid system in the central regulation of nonmammalian vertebrate reproduction. Int J Endocrinol 2013; 2013:941237. [PMID: 24101926 PMCID: PMC3786540 DOI: 10.1155/2013/941237] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 08/12/2013] [Indexed: 12/20/2022] Open
Abstract
The endocannabinoid system (ECS) has a well-documented pivotal role in the control of mammalian reproductive functions, by acting at multiple levels, that is, central (CNS) and local (gonads) levels. Since studies performed in animal models other than mammals might provide further insight into the biology of these signalling molecules, in the present paper we review the comparative data pointing toward the endocannabinoid involvement in the reproductive control of non-mammalian vertebrates, focussing in particular on the central regulation of teleost and amphibian reproduction. The morphofunctional distribution of brain cannabinoid receptors will be discussed in relation to other crucial signalling molecules involved in the control of reproductive functions, such as GnRH, dopamine, aromatase, and pituitary gonadotropins.
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Affiliation(s)
- Erika Cottone
- Department of Life Science and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Torino, Italy
- *Erika Cottone:
| | - Valentina Pomatto
- Department of Life Science and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Torino, Italy
| | - Patrizia Bovolin
- Department of Life Science and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Torino, Italy
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82
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Maccarrone M. Endocannabinoids as markers of sperm quality: hot spots. Front Endocrinol (Lausanne) 2013; 4:169. [PMID: 24265627 PMCID: PMC3820970 DOI: 10.3389/fendo.2013.00169] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 10/24/2013] [Indexed: 11/24/2022] Open
Affiliation(s)
- Mauro Maccarrone
- Center of Integrated Research, Campus Bio-Medico University of Rome, Rome, Italy
- European Center for Brain Research/Santa Lucia Foundation, Rome, Italy
- *Correspondence:
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83
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Oh HA, Kwon S, Choi S, Shin H, Yoon KH, Kim WJ, Lim HJ. Uncovering a role for endocannabinoid signaling in autophagy in preimplantation mouse embryos. ACTA ACUST UNITED AC 2012; 19:93-101. [DOI: 10.1093/molehr/gas049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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84
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Lewis SEM, Rapino C, Di Tommaso M, Pucci M, Battista N, Paro R, Simon L, Lutton D, Maccarrone M. Differences in the endocannabinoid system of sperm from fertile and infertile men. PLoS One 2012; 7:e47704. [PMID: 23082196 PMCID: PMC3474715 DOI: 10.1371/journal.pone.0047704] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 09/14/2012] [Indexed: 12/02/2022] Open
Abstract
Male infertility is a major cause of problems for many couples in conceiving a child. Recently, lifestyle pastimes such as alcohol, tobacco and marijuana have been shown to have further negative effects on male reproduction. The endocannabinoid system (ECS), mainly through the action of anandamide (AEA) and 2-arachidonoylglycerol (2-AG) at cannabinoid (CB1, CB2) and vanilloid (TRPV1) receptors, plays a crucial role in controlling functionality of sperm, with a clear impact on male reproductive potential. Here, sperm from fertile and infertile men were used to investigate content (through LC-ESI-MS), mRNA (through quantitative RT-PCR), protein (through Western Blotting and ELISA) expression, and functionality (through activity and binding assays) of the main metabolic enzymes of AEA and 2-AG (NAPE-PLD and FAAH, for AEA; DAGL and MAGL for 2-AG), as well as of their binding receptors CB1, CB2 and TRPV1. Our findings show a marked reduction of AEA and 2-AG content in infertile seminal plasma, paralleled by increased degradation: biosynthesis ratios of both substances in sperm from infertile versus fertile men. In addition, TRPV1 binding was detected in fertile sperm but was undetectable in infertile sperm, whereas that of CB1 and CB2 receptors was not statistically different in the two groups. In conclusion, this study identified unprecedented alterations of the ECS in infertile sperm, that might impact on capacitation and acrosome reaction, and hence fertilization outcomes. These alterations might also point to new biomarkers to determine male reproductive defects, and identify distinct ECS elements as novel targets for therapeutic exploitation of ECS-oriented drugs to treat male fertility problems.
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Affiliation(s)
- Sheena E M Lewis
- School of Medicine, Centre for Public Health, Queen's University Belfast, Institute of Clinical Science, Belfast, United Kingdom
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85
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Sanchez AM, Vigano P, Mugione A, Panina-Bordignon P, Candiani M. The molecular connections between the cannabinoid system and endometriosis. Mol Hum Reprod 2012; 18:563-71. [DOI: 10.1093/molehr/gas037] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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86
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Chianese R, Ciaramella V, Scarpa D, Fasano S, Pierantoni R, Meccariello R. Anandamide regulates the expression of GnRH1, GnRH2, and GnRH-Rs in frog testis. Am J Physiol Endocrinol Metab 2012; 303:E475-87. [PMID: 22669247 DOI: 10.1152/ajpendo.00086.2012] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Gonadotropin-releasing hormone (either GnRH1 or GnRH2) exerts a local activity in vertebrate testis, including human testis. Relationships between endocannabinoid (eCB) and GnRH systems in gonads have never been elucidated in any species so far. To reveal a cross-talk between eCBs and GnRH at testicular level, we characterized the expression of GnRH (GnRH1 and GnRH2) as well as GnRH receptor (GnRH-R1, -R2, and -R3) mRNA in the testis of the anuran amphibian Rana esculenta during the annual sexual cycle; furthermore, the corresponding transcripts were localized inside the testis by in situ hybridization. The possible endogenous production of the eCB, anandamide (AEA), was investigated in testis by analyzing the expression of its biosynthetic enzyme, Nape-pld. Incubations of testis pieces with AEA were carried out in the postreproductive period (June) and in February, when a new spermatogenetic wave takes place. In June, AEA treatment significantly decreased GnRH1 and GnRH-R2 mRNA, stimulated the transcription of GnRH2 and GnRH-R1, and did not affect GnRH-R3 expression. In February, AEA treatment upregulated GnRH2 and GnRH-R3 mRNA, downregulated GnRH-R2, and did not affect GnRH1 and GnRH-R1 expression. These effects were mediated by type 1 cannabinoid receptor (CB1) since they were fully counteracted by SR141716A (Rimonabant), a selective CB1 antagonist. In conclusion, eCB system modulates GnRH activity in frog testis during the annual sexual cycle in a stage-dependent fashion.
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Affiliation(s)
- Rosanna Chianese
- Dipartimento di Medicina Sperimentale sez F. Bottazzi, Seconda Università di Napoli, via Costantinopoli 16, 80138 Naples, Italy
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87
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Xie H, Sun X, Piao Y, Jegga AG, Handwerger S, Ko MSH, Dey SK. Silencing or amplification of endocannabinoid signaling in blastocysts via CB1 compromises trophoblast cell migration. J Biol Chem 2012; 287:32288-97. [PMID: 22833670 DOI: 10.1074/jbc.m112.381145] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Endocannabinoid signaling plays key roles in multiple female reproductive events. Previous studies have shown an interesting phenomenon, that mice with either silenced or elevated endocannabinoid signaling via Cnr1 encoding CB(1) show similar defects in several pregnancy events, including preimplantation embryo development. To unravel the downstream signaling of this phenomenon, microarray studies were performed using RNAs collected from WT, Cnr1(-/-), and Faah(-/-) mouse blastocysts on day 4 of pregnancy. The results indicate that about 100 genes show unidirectional changes under either silenced or elevated anandamide signaling via CB(1). Functional enrichment analysis of the microarray data predicted that multiple biological functions and pathways are affected under aberrant endocannabinoid signaling. Among them, genes enriched in cell migration are suppressed in Cnr1(-/-) or Faah(-/-) blastocysts. Cell migration assays validated the prediction of functional enrichment analysis that cell mobility and spreading of either Cnr1(-/-) or Faah(-/-) trophoblast stem cells are compromised. Either silenced or elevated endocannabinoid signaling via CB(1) causes similar changes in downstream targets in preimplantation embryos and trophoblast stem cells. This study provides evidence that a tightly regulated endocannabinoid signaling is critical to normal preimplantation embryo development and migration of trophoblast stem cells.
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Affiliation(s)
- Huirong Xie
- Division of Reproductive Sciences, Perinatal Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45229, USA
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88
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Sun X, Dey SK. Endocannabinoid signaling in female reproduction. ACS Chem Neurosci 2012; 3:349-55. [PMID: 22860202 DOI: 10.1021/cn300014e] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 03/03/2012] [Indexed: 11/29/2022] Open
Abstract
Marijuana is a preparation of the flower, as well as the leaves and seeds, of the plant Cannabis sativa. Marijuana has been used for medicinal and recreational purposes for thousands of years due to its psychoactive effects including euphoria, sedation, and analgesia. Although it has been suspected for decades that marijuana has adverse effects on female fertility, the underlying molecular mechanism was not clear. The discovery of cannabinoid receptors and endocannabinoids has advanced studies if cannabinoid signaling. Since then, numerous studies have been published on cannabinoid signaling in female reproductive events, including preimplantation embryo development, oviductal embryo transport, embryo implantation, placentation, and parturition. This review focuses on various aspects of endocannabinoid signaling in female fertility.
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Affiliation(s)
- Xiaofei Sun
- Division of Reproductive Sciences, Perinatal Institute,
Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati,
Ohio 45229, United States
| | - Sudhansu K. Dey
- Division of Reproductive Sciences, Perinatal Institute,
Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati,
Ohio 45229, United States
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89
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Battista N, Meccariello R, Cobellis G, Fasano S, Di Tommaso M, Pirazzi V, Konje JC, Pierantoni R, Maccarrone M. The role of endocannabinoids in gonadal function and fertility along the evolutionary axis. Mol Cell Endocrinol 2012; 355:1-14. [PMID: 22305972 DOI: 10.1016/j.mce.2012.01.014] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 12/05/2011] [Accepted: 01/16/2012] [Indexed: 02/07/2023]
Abstract
Endocannabinoids are natural lipids able to bind to cannabinoid and vanilloid receptors. Their biological actions at the central and peripheral level are under the tight control of the proteins responsible for their synthesis, transport and degradation. In the last few years, several reports have pointed out these lipid mediators as critical signals, together with sex hormones and cytokines, in various aspects of animal and human reproduction. The identification of anandamide (AEA) and 2-arachidonoylglycerol (2-AG) in reproductive cells and tissues of invertebrates, vertebrates and mammals highlights the key role played by these endogenous compounds along the evolutionary axis. Here, we review the main actions of endocannabinoids on female and male reproductive events, and discuss the interplay between them, steroid hormones and cytokines in regulating fertility. In addition, we discuss the involvement of endocannabinoid signalling in ensuring a correct chromatin remodeling, and hence a good DNA quality, in sperm cells.
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Affiliation(s)
- Natalia Battista
- Dipartimento di Scienze Biomediche Comparate, Università di Teramo, 64100 Teramo, Italy
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90
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Oddi S, Dainese E, Sandiford S, Fezza F, Lanuti M, Chiurchiù V, Totaro A, Catanzaro G, Barcaroli D, De Laurenzi V, Centonze D, Mukhopadhyay S, Selent J, Howlett AC, Maccarrone M. Effects of palmitoylation of Cys(415) in helix 8 of the CB(1) cannabinoid receptor on membrane localization and signalling. Br J Pharmacol 2012; 165:2635-51. [PMID: 21895628 PMCID: PMC3423250 DOI: 10.1111/j.1476-5381.2011.01658.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 07/15/2011] [Accepted: 08/05/2011] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE The CB(1) cannabinoid receptor is regulated by its association with membrane microdomains such as lipid rafts. Here, we investigated the role of palmitoylation of the CB(1) receptor by analysing the functional consequences of site-specific mutation of Cys(415) , the likely site of palmitoylation at the end of helix 8, in terms of membrane association, raft targeting and signalling. EXPERIMENTAL APPROACH The palmitoylation state of CB(1) receptors in rat forebrain was assessed by depalmitoylation/repalmitoylation experiments. Cys(415) was replaced with alanine by site-directed mutagenesis. Green fluorescence protein chimeras of both wild-type and mutant receptors were transiently expressed and functionally characterized in SH-SY5Y cells and HEK-293 cells by means of confocal microscopy, cytofluorimetry and competitive binding assays. Confocal fluorescence recovery after photobleaching was used to assess receptor membrane dynamics, whereas signalling activity was assessed by [(35) S]GTPγS, cAMP and co-immunoprecipitation assays. KEY RESULTS Endogenous CB(1) receptors in rat brain were palmitoylated. Mutation of Cys(415) prevented the palmitoylation of the receptor in transfected cells and reduced its recruitment to plasma membrane and lipid rafts; it also increased protein diffusional mobility. The same mutation markedly reduced the functional coupling of CB(1) receptors with G-proteins and adenylyl cyclase, whereas depalmitoylation abolished receptor association with a specific subset of G-proteins. CONCLUSIONS AND IMPLICATIONS CB(1) receptors were post-translationally modified by palmitoylation. Mutation of Cys(415) provides a receptor that is functionally impaired in terms of membrane targeting and signalling. LINKED ARTICLES This article is part of a themed section on Cannabinoids in Biology and Medicine. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2012.165.issue-8. To view Part I of Cannabinoids in Biology and Medicine visit http://dx.doi.org/10.1111/bph.2011.163.issue-7.
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Affiliation(s)
- Sergio Oddi
- Department of Biomedical Sciences, University of TeramoTeramo, Italy
- European Center for Brain Research (CERC)/Santa Lucia Foundation I.R.C.C.S.Rome, Italy
| | - Enrico Dainese
- Department of Biomedical Sciences, University of TeramoTeramo, Italy
- European Center for Brain Research (CERC)/Santa Lucia Foundation I.R.C.C.S.Rome, Italy
| | - Simone Sandiford
- Neuroscience/Drug Abuse Research Program, Biomedical Biotechnology Research Institute, North Carolina Central UniversityDurham, NC, USA
| | - Filomena Fezza
- European Center for Brain Research (CERC)/Santa Lucia Foundation I.R.C.C.S.Rome, Italy
- Department of Experimental Medicine and Biochemical Sciences, University of Rome ‘Tor Vergata’Rome, Italy
| | - Mirko Lanuti
- Department of Biomedical Sciences, University of TeramoTeramo, Italy
- European Center for Brain Research (CERC)/Santa Lucia Foundation I.R.C.C.S.Rome, Italy
| | - Valerio Chiurchiù
- European Center for Brain Research (CERC)/Santa Lucia Foundation I.R.C.C.S.Rome, Italy
| | - Antonio Totaro
- European Center for Brain Research (CERC)/Santa Lucia Foundation I.R.C.C.S.Rome, Italy
| | - Giuseppina Catanzaro
- Department of Biomedical Sciences, University of TeramoTeramo, Italy
- European Center for Brain Research (CERC)/Santa Lucia Foundation I.R.C.C.S.Rome, Italy
| | - Daniela Barcaroli
- Department of Biomedical Sciences, University of Chieti-Pescara ‘G. d'Annunzio’Chieti, Italy
| | - Vincenzo De Laurenzi
- Department of Biomedical Sciences, University of Chieti-Pescara ‘G. d'Annunzio’Chieti, Italy
| | - Diego Centonze
- European Center for Brain Research (CERC)/Santa Lucia Foundation I.R.C.C.S.Rome, Italy
- Department of Neurosciences, University of Rome ‘Tor Vergata’Rome, Italy
| | - Somnath Mukhopadhyay
- Neuroscience/Drug Abuse Research Program, Biomedical Biotechnology Research Institute, North Carolina Central UniversityDurham, NC, USA
| | - Jana Selent
- Research Group of biomedical Informatics (GRIB-IMIM), University of Pompeu Fabra, Barcelona Biomedical Research Park (PRBB)Barcelona, Spain
| | - Allyn C Howlett
- Department of Physiology and Pharmacology, Wake Forest University Health SciencesWinston-Salem, NC, USA
| | - Mauro Maccarrone
- Department of Biomedical Sciences, University of TeramoTeramo, Italy
- European Center for Brain Research (CERC)/Santa Lucia Foundation I.R.C.C.S.Rome, Italy
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91
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Van der Schueren BJ, Van Laere K, Gérard N, Bormans G, De Hoon JN. Interictal type 1 cannabinoid receptor binding is increased in female migraine patients. Headache 2011; 52:433-40. [PMID: 22077199 DOI: 10.1111/j.1526-4610.2011.02030.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To compare binding of the type 1 cannabinoid receptor (CB1R) between migraine patients and healthy volunteers. BACKGROUND It has been suggested that endocannabinoid deficiency may play a role in the pathophysiology of migraine. Nonetheless, biochemical studies substantiating this idea remain scarce and are faced with methodological shortcomings partly because of the difficulty to perform measurements of endocannabinoids within the central nervous system itself. METHODS An observational cross-sectional study was conducted in 20 female migraine patients and 18 healthy women matched for age and body mass index. Positron emission tomography acquisition was performed 90 minutes after intravenous injection of the radioligand [(18)F]MK-9470 to assess binding of [(18)F]MK-9470 to CB1R. RESULTS Binding of CB1 R was globally increased in migraine patients vs healthy controls (average gray matter difference +16%; P = .009, 2-sample 2-sided Student's t-test). There were no correlations between CB1R binding and any predefined migraine characteristics. Increases in CB1R binding were most pronounced in the anterior cingulate, mesial temporal, prefrontal, and superior frontal cortices. CONCLUSION The increased interictal CB1R binding, especially in brain regions that exert top-down influences to modulate pain, supports the idea that endocannibinoid deficiency is present in female patients suffering from episodic migraine.
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92
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Kopczyńska B, Sulejczak D, Wełniak-Kamińska M, Gietka A, Grieb P. Anandamide enhances expression of heat shock proteins Hsp70 and Hsp25 in rat lungs. Eur J Pharmacol 2011; 668:257-63. [DOI: 10.1016/j.ejphar.2011.06.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Revised: 06/09/2011] [Accepted: 06/23/2011] [Indexed: 01/09/2023]
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93
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Chianese R, Ciaramella V, Fasano S, Pierantoni R, Meccariello R. Anandamide modulates the expression of GnRH-II and GnRHRs in frog, Rana esculenta, diencephalon. Gen Comp Endocrinol 2011; 173:389-95. [PMID: 21802420 DOI: 10.1016/j.ygcen.2011.07.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 06/17/2011] [Accepted: 07/08/2011] [Indexed: 10/18/2022]
Abstract
In the hypothalamus, endocannabinoids affect neuroendocrine activity by means of Gonadotropin-Releasing-Hormone-I (GnRH-I) inhibition. Since most vertebrates, human included, possess at least two GnRH molecular forms, the aim of this work was to investigate the effect of endocannabinoids on GnRH molecular forms other than GnRH-I and on GnRHRs. Thus, we cloned GnRH precursors as well as GnRH receptors (GnRHR-I, GnRHR-II, GnRHR-III) from the diencephalons of the anuran amphibian, Rana esculenta. GnRH-II expression was evaluated in pituitary, whole brain, spinal cord, hindbrain, midbrain and forebrain during the annual sexual cycle. Then, in post-reproductive period (May), GnRH-I, GnRH-II and GnRHRs expression was evaluated by quantitative real time (qPCR) after incubation of diencephalons with the endocannabinoid anandamide (AEA). AEA significantly decreased GnRH-I and GnRH-II expression, up regulated GnRHR-I and GnRHR-II mRNA and it had no effect upon GnRHR-III expression. These effects were counteracted by SR141716A (Rimonabant), a selective antagonist of type I cannabinoid receptor (CB1). In conclusion our results demonstrate a CB1 receptor dependent modulation of GnRH system expression rate (both ligands and receptors) in frog diencephalons. In particular, we show that AEA, besides GnRH-I, also acts on GnRH-II expression.
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Affiliation(s)
- Rosanna Chianese
- Dipartimento di Medicina Sperimentale sez F. Bottazzi, Seconda Università di Napoli, Via Costantinopoli 16, 80138 Napoli, Italy.
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94
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Chen W, Xu C, Liu HY, Long L, Zhang W, Zheng ZB, Xie YD, Wang LL, Li S. Novel selective cannabinoid CB(1) receptor antagonist MJ08 with potent in vivo bioactivity and inverse agonistic effects. Acta Pharmacol Sin 2011; 32:1148-58. [PMID: 21841814 DOI: 10.1038/aps.2011.80] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
AIM To characterize the biological profiles of MJ08, a novel selective CB(1) receptor antagonist. METHODS Radioligand binding assays were performed using rat brain and spleen membrane preparations. CB(1) and CB(2) receptor redistribution and intracellular Ca(2+) ([Ca(2+)](i)) assays were performed with IN CELL Analyzer. Inverse agonism was studied using intracellular cAMP assays, and in guinea-pig ileum and mouse vas deferens smooth muscle preparations. In vivo pharmacologic profile was assessed in diet-induced obesity (DIO) mice. RESULTS In radioligand binding assay, MJ08 selectively antagonized CB(1) receptor (IC(50)=99.9 nmol/L). In EGFP-CB(1)_U2OS cells, its IC(50) value against CB(1) receptor activation was 30.23 nmol/L (SR141716A: 32.16 nmol/L). WIN 55,212-2 (1 μmol/L) increased [Ca(2+)](i) in the primary cultured hippocampal neuronal cells and decreased cAMP accumulation in CHO-hCB(1) cells. MJ08 (10 nmol/L-10 μmol/L) blocked both the WIN 55,212-2-induced effects. Furthermore, MJ08 reversed the inhibition of electrically evoked twitches of mouse vas deferens by WIN 55,212-2 (pA(2)=10.29±1.05). MJ08 and SR141716A both showed an inverse agonism activity by markedly promoting the contraction force and frequency of guinea pig ileum muscle. MJ08 significantly increased the cAMP level in CHO-hCB(1) cells with an EC(50) value of 78.6 nmol/L, which was lower than the EC(50) value for SR141716A (159.2 nmol/L). Besides the more potent pharmacological effects of cannabinoid CB(1) receptor antagonism in DIO mice, such as reducing food intake, decreasing body weight, and ameliorating dyslipidemia, MJ08 (10 mg/kg) unexpectedly raised the fasted blood glucose in vivo. CONCLUSION MJ08 is a novel, potent and selective CB(1) receptor antagonist/inverse agonist with potent bioactive responses in vitro and in vivo that may be useful for disclosure the versatile nature of CB(1) receptors.
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95
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Peralta L, Agirregoitia E, Mendoza R, Expósito A, Casis L, Matorras R, Agirregoitia N. Expression and localization of cannabinoid receptors in human immature oocytes and unfertilized metaphase-II oocytes. Reprod Biomed Online 2011; 23:372-9. [PMID: 21778114 DOI: 10.1016/j.rbmo.2011.05.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Revised: 03/11/2011] [Accepted: 05/18/2011] [Indexed: 12/19/2022]
Abstract
Endocannabinoid anandamide and cannabinoid receptors have been described in some organs of the female reproductive system, but little is known about the expression of these receptors in human oocytes. The aim of the study was to describe the expression of cannabinoid receptors in human oocytes and to investigate their differential distribution at various stages of meiotic resumption in human oocytes. A total of 750 human oocytes from 214 patients were analysed by Western blot, immunocytochemistry and PCR. For this study, oocytes that were not suitable for intracytoplasmic sperm injection (ICSI) (germinal-vesicle and metaphase-I stages), as well as metaphase-II oocytes that had not developed into an embryo after ICSI were used. Western blot analysis revealed the presence of CB1 and CB2 receptor proteins in human oocytes. CB1 and CB2 receptor immunostaining patterns changed during the various stages of meiotic resumption. Localization of CB1 receptor was peripheral at germinal-vesicle stage, homogeneous over the entire oocyte at metaphase I and peripheral at mature metaphase II. CB2 receptor localization was peripheral at germinal-vesicle and metaphase-I stages but homogeneous over the entire cell at metaphase II. This finding suggests a possible role for endocannabinoids, acting via receptors, in the maturation of female gametes and fertilization. The number of couples with sterility problems attending fertility programmes is rising but treatment is not always successful. Important problems associated with failure to conceive remain unresolved because many physiological aspects of human reproduction are still unknown. Endocannabinoids are endogenous chemical compounds that mimic the action of the main psychoactive component of marijuana, delta-9-tetrahydrocannabinol. An endogenous cannabinoid named anandamide has been found in human follicular fluid. Thus, in order to develop knowledge in this field, in the present study we have described the presence of the cannabinoid receptors CB1 and CB2 (the proteins required to mediate the action of the cannabinoids) in the early stages of meiotic resumption of oocytes (the stages before ovulation) and we could postulate that the endocannabinoids could act in the regulation of maturation of oocytes. Our study, together with other studies, indicates that the endocannabinoid system may play a role in human reproduction.
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Affiliation(s)
- L Peralta
- Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Bilbao, Bizkaia, Spain
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96
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Yasuo S, Korf HW. The hypophysial pars tuberalis transduces photoperiodic signals via multiple pathways and messenger molecules. Gen Comp Endocrinol 2011; 172:15-22. [PMID: 21078321 DOI: 10.1016/j.ygcen.2010.11.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Accepted: 11/08/2010] [Indexed: 11/26/2022]
Abstract
Located between the median eminence, the portal vessels, and the pars distalis (PD) of the hypophysis, the hypophysial pars tuberalis (PT) is an important center for transmission of photoperiodic information to neuroendocrine circuits involved in the control of reproduction, metabolism and behavior. Despite enormous and long lasting efforts, output pathways and messenger molecules from the PT have been unraveled only recently. Most interestingly, the PT sends its signals in two directions: via a "retrograde" pathway to the hypothalamus and via an "anterograde" pathway to the PD. TSH has been identified as a messenger of the "retrograde" pathway. As discovered in Japanese quail, TSH triggers molecular cascades mediating thyroid hormone conversion in the mediobasal hypothalamus (MBH) to activate the gonadal axis. These molecular mechanisms are conserved in photoperiodic mammals, and even in non-photoperiodic laboratory mice. The search for molecules of the "anterograde" pathway was for a long time focused on PT-specific neuropeptides, the so-called "tuberalins". The discovery of a PT-intrinsic endocannabinoid system in hamsters which is regulated by the photoperiod provides strong experimental evidence that the PT also synthesizes lipidergic messengers. To date, 2-arachidonoylglycerol (2-AG) appears as the most important lipidergic messenger from the PT. The primary target of 2-AG, the cannabinoid receptor 1 (CB1) is expressed in the hamster PD. A PT-intrinsic endocannabinoid system also exists in man and CB1 receptors are demonstrated in ACTH-producing cells and folliculo-stellate cells of the human PD. These data lend support to the hypothesis that endocannabinoids function as messengers of the anterograde pathway.
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Affiliation(s)
- Shinobu Yasuo
- Dr. Senckenbergische Anatomie, Institut für Anatomie II, Goethe-Universität Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.
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97
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Li XH, Ma YG, Geng LH, Qin L, Hu H, Li SW. Baseline psychological stress and ovarian norepinephrine levels negatively affect the outcome of in vitro fertilisation. Gynecol Endocrinol 2011; 27:139-43. [PMID: 20670099 DOI: 10.3109/09513590.2010.501871] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE We determined the effect of baseline psychological stress and norepinephrine (NE) levels in the follicular fluid on the outcome of in vitro fertilisation (IVF). METHODS One hundred seven women with tubal factor infertility were evaluated before and during their first IVF treatment. On the first day of down-regulation, their psychological state was measured using the Zung Self-rating Anxiety (SAS) and Depression Scales (SDS), and defined as baseline psychological stress. On oocyte retrieval day, NE levels in the follicular fluid and peripheral plasma were measured by high-performance liquid chromatography. RESULTS On the first day of down-regulation, nearly 10% of the women with tubal factor infertility reported that they were experiencing both anxiety and depression. This baseline psychological stress was lower in pregnant (3.7%) than in non-pregnant women (15.7%, p<0.05). On oocyte retrieval day, the NE levels in follicular fluid were almost twice the amount seen in peripheral plasma, but did not differ in pregnant and non-pregnant women (p>0.05). NE levels in follicular fluid were negatively associated with the percentage of good quality embryos (r= -0.62, p<0.05). CONCLUSIONS Baseline psychological stress (both anxiety and depression) may negatively influence the clinical pregnancy rate of IVF treatment in women with tubal factor infertility. Furthermore, follicular NE levels are negatively associated with the percentage of good quality embryos.
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Affiliation(s)
- Xiao-Hong Li
- Reproductive Medical Center of West China 2nd Hospital, Sichuan University, Ren Min Nan Lu, City of Chengdu, Sichuan, 610041, People's Republic of China
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98
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Chianese R, Chioccarelli T, Cacciola G, Ciaramella V, Fasano S, Pierantoni R, Meccariello R, Cobellis G. The contribution of lower vertebrate animal models in human reproduction research. Gen Comp Endocrinol 2011; 171:17-27. [PMID: 21192939 DOI: 10.1016/j.ygcen.2010.12.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 12/11/2010] [Accepted: 12/16/2010] [Indexed: 01/16/2023]
Abstract
Many advances have been carried out on the estrogens, GnRH and endocannabinoid system that have impact in the reproductive field. Indeed, estrogens, the generally accepted female hormones, have performed an unsuspected role in male sexual functions thanks to studies on non-mammalian vertebrates. Similarly, these animal models have provided important contributions to the identification of several GnRH ligand and receptor variants and their possible involvement in sexual behavior and gonadal function regulation. Moreover, the use of non-mammalian animal models has contributed to a better comprehension about the endocannabinoid system action in several mammalian reproductive events. We wish to highlight here how non-mammalian vertebrate animal model research contributes to advancements with implications on human health as well as providing a phylogenetic perspective on the evolution of reproductive systems in vertebrates.
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Affiliation(s)
- Rosanna Chianese
- Dipartimento di Medicina Sperimentale, Seconda Università degli Studi di Napoli, via Costantinopoli 16, 80138 Napoli, Italy
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99
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Trabert B, Sigurdson AJ, Sweeney AM, Strom SS, McGlynn KA. Marijuana use and testicular germ cell tumors. Cancer 2011; 117:848-53. [PMID: 20925043 PMCID: PMC3017734 DOI: 10.1002/cncr.25499] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Revised: 05/14/2010] [Accepted: 06/07/2010] [Indexed: 11/10/2022]
Abstract
BACKGROUND Since the early 1970s, the incidence of testicular germ cell tumors (TGCTs) in the United States has been increasing; however, potential environmental exposures accounting for this increase have not been identified. A previous study reported a significant association between frequent and long-term current marijuana users and TGCT risk. The purpose of this study was to evaluate the relation between marijuana use and TGCTs in a hospital-based case-control study. METHODS TGCT patients diagnosed between January 1990 and October 1996 (n = 187) and male friend controls (n = 148) were enrolled in the study. All participants were between the ages of 18 and 50 at the time of diagnosis and resided in Texas, Louisiana, Arkansas, or Oklahoma. Associations of marijuana use and TGCTs were estimated using unconditional logistic regression, adjusting for age, race, prior cryptorchidism, cigarette smoking, and alcohol intake. RESULTS Overall, patients with TGCTs were more likely to be frequent marijuana users (daily or greater) compared with controls (odds ratio [OR], 2.2; 95% confidence interval [CI], 1.0-5.1). Histological-specific analyses revealed that patients with nonseminoma were significantly more likely than controls to be frequent users (OR, 3.1; 95% CI, 1.2-8.2) and long-term (≥ 10 years) users (OR, 2.4; 95% CI, 1.0-6.1). CONCLUSIONS The finding of an association between frequent marijuana use and TGCTs, particularly among men with nonseminoma, was consistent with the findings of a previous report. Additional studies of marijuana use and TGCTs are warranted, especially studies evaluating the role of endocannabinoid signaling and cannabinoid receptors in TGCTs.
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Affiliation(s)
- Britton Trabert
- Hormonal and Reproductive Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Rockville, Maryland, USA.
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100
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Gervasi MG, Osycka-Salut C, Caballero J, Vazquez-Levin M, Pereyra E, Billi S, Franchi A, Perez-Martinez S. Anandamide capacitates bull spermatozoa through CB1 and TRPV1 activation. PLoS One 2011; 6:e16993. [PMID: 21347292 PMCID: PMC3037938 DOI: 10.1371/journal.pone.0016993] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Accepted: 01/18/2011] [Indexed: 11/24/2022] Open
Abstract
Anandamide (AEA), a major endocannabinoid, binds to cannabinoid and vanilloid receptors (CB1, CB2 and TRPV1) and affects many reproductive functions. Nanomolar levels of anandamide are found in reproductive fluids including mid-cycle oviductal fluid. Previously, we found that R(+)-methanandamide, an anandamide analogue, induces sperm releasing from bovine oviductal epithelium and the CB1 antagonist, SR141716A, reversed this effect. Since sperm detachment may be due to surface remodeling brought about by capacitation, the aim of this paper was to investigate whether anandamide at physiological concentrations could act as a capacitating agent in bull spermatozoa. We demonstrated that at nanomolar concentrations R(+)-methanandamide or anandamide induced bull sperm capacitation, whereas SR141716A and capsazepine (a TRPV1 antagonist) inhibited this induction. Previous studies indicate that mammalian spermatozoa possess the enzymatic machinery to produce and degrade their own AEA via the actions of the AEA-synthesizing phospholipase D and the fatty acid amide hydrolase (FAAH) respectively. Our results indicated that, URB597, a potent inhibitor of the FAAH, produced effects on bovine sperm capacitation similar to those elicited by exogenous AEA suggesting that this process is normally regulated by an endogenous tone. We also investigated whether anandamide is involved in bovine heparin-capacitated spermatozoa, since heparin is a known capacitating agent of bovine sperm. When the spermatozoa were incubated in the presence of R(+)-methanandamide and heparin, the percentage of capacitated spermatozoa was similar to that in the presence of R(+)-methanandamide alone. The pre-incubation with CB1 or TRPV1 antagonists inhibited heparin-induced sperm capacitation; moreover the activity of FAAH was 30% lower in heparin-capacitated spermatozoa as compared to control conditions. This suggests that heparin may increase endogenous anandamide levels. Our findings indicate that anandamide induces sperm capacitation through the activation of CB1 and TRPV1 receptors and could be involved in the same molecular pathway as heparin in bovines.
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Affiliation(s)
- María Gracia Gervasi
- Centro de Estudios Farmacológicos y Botánicos, Facultad de Medicina, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Claudia Osycka-Salut
- Centro de Estudios Farmacológicos y Botánicos, Facultad de Medicina, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Julieta Caballero
- Instituto de Biología y Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Mónica Vazquez-Levin
- Instituto de Biología y Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Elba Pereyra
- Centro de Estudios Farmacológicos y Botánicos, Facultad de Medicina, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Silvia Billi
- Instituto de Investigaciones Biotecnológicas, Universidad de San Martín, Buenos Aires, Argentina
| | - Ana Franchi
- Centro de Estudios Farmacológicos y Botánicos, Facultad de Medicina, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Silvina Perez-Martinez
- Centro de Estudios Farmacológicos y Botánicos, Facultad de Medicina, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
- * E-mail:
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