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Corticotropin-Releasing Factor Family: A Stress Hormone-Receptor System's Emerging Role in Mediating Sex-Specific Signaling. Cells 2020; 9:cells9040839. [PMID: 32244319 PMCID: PMC7226788 DOI: 10.3390/cells9040839] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/25/2020] [Accepted: 03/28/2020] [Indexed: 12/14/2022] Open
Abstract
No organ in the body is impervious to the effects of stress, and a coordinated response from all organs is essential to deal with stressors. A dysregulated stress response that fails to bring systems back to homeostasis leads to compromised function and ultimately a diseased state. The components of the corticotropin-releasing factor (CRF) family, an ancient and evolutionarily conserved stress hormone-receptor system, helps both initiate stress responses and bring systems back to homeostasis once the stressors are removed. The mammalian CRF family comprises of four known agonists, CRF and urocortins (UCN1–3), and two known G protein-coupled receptors (GPCRs), CRF1 and CRF2. Evolutionarily, precursors of CRF- and urocortin-like peptides and their receptors were involved in osmoregulation/diuretic functions, in addition to nutrient sensing. Both CRF and UCN1 peptide hormones as well as their receptors appeared after a duplication event nearly 400 million years ago. All four agonists and both CRF receptors show sex-specific changes in expression and/or function, and single nucleotide polymorphisms are associated with a plethora of human diseases. CRF receptors harbor N-terminal cleavable peptide sequences, conferring biased ligand properties. CRF receptors have the ability to heteromerize with each other as well as with other GPCRs. Taken together, CRF receptors and their agonists due to their versatile functional adaptability mediate nuanced responses and are uniquely positioned to orchestrate sex-specific signaling and function in several tissues.
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Currie PJ, Coiro CD, Duenas R, Guss JL, Mirza A, Tal N. Urocortin I inhibits the effects of ghrelin and neuropeptide Y on feeding and energy substrate utilization. Brain Res 2012; 1385:127-34. [PMID: 21303672 DOI: 10.1016/j.brainres.2011.01.114] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Revised: 01/29/2011] [Accepted: 01/31/2011] [Indexed: 02/02/2023]
Abstract
The corticotropin releasing hormone-related ligand, urocortin-I (UcnI), suppresses food intake when injected into multiple hypothalamic and extrahypothalamic areas. UcnI also alters energy substrate utilization, specifically via enhanced fat oxidation as reflected in reductions in respiratory quotient (RQ). In the present study we compared the feeding and metabolic effects of ghrelin and NPY following pretreatment with UcnI. Direct PVN injections of NPY (50 pmol) and ghrelin (50 pmol) were orexigenic while UcnI (10-40 pmol) reliably suppressed food intake. Both ghrelin and NPY increased RQ, indicating enhanced utilization of carbohydrates and the preservation of fat stores. UcnI alone suppressed RQ responses. PVN UcnI attenuated the effects of both ghrelin and NPY on food intake and energy substrate utilization. While ghrelin (5 pmol) potentiated the effect of NPY (25 pmol) on RQ and food intake, these responses were inhibited by pretreatment with UcnI (10 pmol). In conclusion, PVN NPY and ghrelin stimulate eating and promote carbohydrate oxidation while inhibiting fat utilization. These effects are blocked by UcnI which alone suppresses appetite and promotes fat oxidation. Overall these findings are consistent with a possible interactive role of PVN NPY, ghrelin and urocortin in the modulation of appetite and energy metabolism.
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Affiliation(s)
- Paul J Currie
- Department of Psychology, Reed College, 3203 SE Woodstock Blvd, Portland, OR 97202, USA.
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Dono LM, Currie PJ. The cannabinoid receptor CB₁ inverse agonist AM251 potentiates the anxiogenic activity of urocortin I in the basolateral amygdala. Neuropharmacology 2011; 62:192-9. [PMID: 21736884 DOI: 10.1016/j.neuropharm.2011.06.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Revised: 06/03/2011] [Accepted: 06/22/2011] [Indexed: 10/18/2022]
Abstract
The basolateral amygdala is reported to play an important role in the neural bases of emotional processing. Previous studies have shown that injections of urocortin I (UcnI) into the basolateral amygdala (BLA) elicit anxiety-like behaviors in animal models. The present study examined the anxiogenic effects of UcnI administered directly into the BLA of male Sprague-Dawley rats. UcnI was administered at doses of 0.1-10.0 pmol and rats were then placed in an elevated plus maze for 10 min. UcnI reliably decreased the percent time spent in the open arms of the elevated plus maze (EPM) as well as open arm entries. This effect was observed across all doses tested, indicating the induction of anxiety-like behavior. In separate groups of rats, the CB(1) inverse agonist AM251 was administered systemically (0.03-3.0 mg/kg IP) or directly into the BLA (0.25-25.0 pmol) and EPM performance assessed. Both routes of AM251 administration produced a reduction in open arm entries and in time spent in the open arms. Moreover, when rats were pretreated with AM251 either systemically or directly into the BLA, the anxiogenic effect of UcnI was potentiated. That is, co-administration of AM251 and UcnI produced a greater suppression of percent time spent in the open arms and open arm entries as compared to UcnI alone. Based on these findings, we propose that urocortin and endocannabinoid signaling are part of an integrated neural axis modulating anxiety states within the basolateral amygdala. This article is part of a Special Issue entitled 'Anxiety and Depression'.
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Affiliation(s)
- Lindsey M Dono
- Department of Psychology, Reed College, 3203 SE Woodstock Blvd, Portland, OR 97202, USA
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Borges LE, Horne AW, McDonald SE, Shaw JLV, Lourenco PC, Petraglia F, Critchley HOD. Attenuated tubal and endometrial urocortin 1 and corticotropin-releasing hormone receptor expression in ectopic pregnancy. Reprod Sci 2011; 18:261-8. [PMID: 20978183 PMCID: PMC3042128 DOI: 10.1177/1933719110385132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Fallopian tube (FT) and endometrial urocortin 1 (Ucn1) and corticotropin-releasing hormone (CRH)-receptor (CRH-R1/CRH-R2) expression were examined using quantitative real-time polymerase chain reaction (RT-PCR) and immunohistochemistry in nonpregnant and pregnant women (intrauterine, IUP; ectopic pregnancy, EP). Tubal Ucn1 messenger RNA (mRNA) expression was higher in luteal compared to follicular phase (P < .01) and equivalent to follicular phase in FT from EP. Tubal CRH-R1/CRH-R2 mRNA was lower in luteal phase (P < .05) and in FT from EP compared to follicular phase (P < .01). Ucn1 mRNA was lower in endometrium from EP compared to IUP (P < .05). Corticotropin-releasing hormone-R1 mRNA was higher in endometrium from EP compared to viable IUP (P < .05). No differences were observed in CRH-R2 expression. Corticotropin-releasing hormone-R1 protein was primarily localized to epithelium of FT and endometrium. Quantitative analysis of tubal CRH-R1 protein expression reflected that seen at the mRNA level but endometrial expression was equivocal. The demonstration of attenuated tubal/endometrial Ucn1/CRH-R expression in EP further supports a role of the CRH-family in embryo implantation.
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Affiliation(s)
- L E Borges
- Department of Pediatrics, Obstetrics and Reproductive Medicine, Section of Obstetrics and Gynecology, University of Siena, Siena, Italy
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Tezval M, Tezval H, Dresing K, Stuermer EK, Blaschke M, Stuermer KM, Siggelkow H. Differentiation dependent expression of urocortin's mRNA and peptide in human osteoprogenitor cells: influence of BMP-2, TGF-beta-1 and dexamethasone. J Mol Histol 2009; 40:331-41. [PMID: 19949969 PMCID: PMC2834774 DOI: 10.1007/s10735-009-9244-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2009] [Accepted: 11/19/2009] [Indexed: 11/30/2022]
Abstract
Urocortin-1 (UCN) a corticotropin releasing-factor (CRF) related peptide, has been found to be expressed in many different tissues like the central nervous system, the cardiovascular system, adipose tissue, and skeletal muscle. The effects of UCN are mediated via stimulation of CRF-receptors 1 and 2 (CRFR1 and 2, CRFR’s) with a high affinity for CRFR2. It has been shown that the CRF-related peptides and CRFR’s are involved in the regulation of stress-related endocrine, autonomic and behavioural responses. Using immunocytochemistry, immunohistochemistry and RT–PCR, we now can show the differentiation dependent expression of UCN mRNA and peptide in human mesenchymal progenitor cells (MSCs) directed to the osteoblastic phenotype for the first time. UCN expression was down regulated by TGF-beta and BMP-2 in the early proliferation phase of osteoblast development, whereas dexamethasone (dex) minimally induced UCN gene expression during matrix maturation after 24 h stimulation. Stimulation of MSCs for 28 days with ascorbate/beta-glycerophosphate (asc/bGp) induced UCN gene expression at day 14. This effect was prevented when using 1,25-vitamin D3 or dex in addition. There was no obvious correlation to osteocalcin (OCN) gene expression in these experiments. In MSCs from patients with metabolic bone disease (n = 9) UCN gene expression was significantly higher compared to MSCs from normal controls (n = 6). Human MSCs did not express any of the CRFR’s during differentiation to osteoblasts. Our results indicate that UCN is produced during the development of MSCs to osteoblasts and differentially regulated during culture as well as by differentiation factors. The expression is maximal between proliferation and matrix maturation phase. However, UCN does not seem to act on the osteoblast itself as shown by the missing CRFR’s. Our results suggest new perspectives on the role of urocortin in human skeletal tissue in health and disease.
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Affiliation(s)
- Mohammad Tezval
- Department of Trauma, Plastic and Reconstructive Surgery, Goettingen University Hospital, University Medicine Goetingen, Robert Koch Str. 40, 37075 Goettingen, Germany.
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The role of urocortin in gynecological and obstetrical conditions. Arch Gynecol Obstet 2008; 279:613-9. [DOI: 10.1007/s00404-008-0782-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2008] [Accepted: 08/21/2008] [Indexed: 11/30/2022]
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Arck PC, Rücke M, Rose M, Szekeres-Bartho J, Douglas AJ, Pritsch M, Blois SM, Pincus MK, Bärenstrauch N, Dudenhausen JW, Nakamura K, Sheps S, Klapp BF. Early risk factors for miscarriage: a prospective cohort study in pregnant women. Reprod Biomed Online 2008; 17:101-13. [PMID: 18616898 DOI: 10.1016/s1472-6483(10)60300-8] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Many pregnancies are lost during early gestation, but clinicians still lack tools to recognize risk factors for miscarriage. Thus, the identification of risk factors for miscarriage during the first trimester in women with no obvious risk for a pregnancy loss was the aim of this prospective cohort trial. A total of 1098 women between gestation weeks 4 and 12 in whom no apparent signs of a threatened pregnancy could be diagnosed were recruited. Demographic, anamnestic, psychometric and biological data were documented at recruitment and pregnancy outcomes were registered subsequently. Among the cases with sufficiently available data, 809 successfully progressing pregnancies and 55 subsequent miscarriages were reported. In this cohort, risk of miscarriage was significantly increased in women at higher age (>33 years), lower body mass index (< or =20 kg/ m(2)) and lower serum progesterone concentrations (< or =12 ng/ml) prior to the onset of the miscarriage. Women with subsequent miscarriage also perceived higher levels of stress/demands (supported by higher concentrations of corticotrophin-releasing hormone) and revealed reduced concentrations of progesterone-induced blocking factor. These risk factors were even more pronounced in the subcohort of women (n = 335) recruited between gestation weeks 4 and 7. The identification of these risk factors and development of an interaction model of these factors, as introduced in this article, will help clinicians to recognize pregnant women who require extra monitoring and who might benefit from therapeutic interventions such as progestogen supplementation, especially during the first weeks of pregnancy, to prevent a miscarriage.
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Affiliation(s)
- Petra C Arck
- Centre of Internal Medicine and Dermatology, Division of Psycho-Neuro-Immunology, Charité, University Medicine Berlin, Germany.
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Makrigiannakis A, Gravanis A. Immune function in pregnancy: the role of corticotropin-releasing hormone. Expert Rev Endocrinol Metab 2008; 3:315-325. [PMID: 30754199 DOI: 10.1586/17446651.3.3.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Pregnancy represents a major challenge to the maternal immune system since it has to tolerate the semi-allograft fetus. Indeed, the success of pregnancy requires an appropriate immunological interaction between the mother and the fetus. Furthermore, evidence suggests that some pregnancy complications, such as spontaneous abortions, preeclampsia and intrauterine growth restriction, are associated with abnormal maternal-fetal immune responses. Corticotropin-releasing hormone (CRH), a 41-amino acid peptide originally found in the hypothalamus, appears to have a fundamental role in the mechanisms responsible for the implantation and maintenance of human pregnancy. Reproductive CRH is a form of tissue CRH (CRH found in peripheral tissues), analogous to the immune CRH detected in peripheral inflammatory sites. Reproductive CRH has been identified in the endometrial glands, the decidualized endometrial stroma and the placental trophoblast, synctiotrophoblast and decidua. Reproductive CRH participates in various reproductive functions with an inflammatory component, where it serves as an autocrine/paracrine modulator. The immunological mechanisms contributing to the establishment and maintenance of pregnancy are not fully understood. The present article focuses on the potential roles of CRH on the physiology and pathophysiology of pregnancy and highlights its participation in implantation, early fetal immunotolerance and parturition.
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Affiliation(s)
- Antonis Makrigiannakis
- a Laboratory of Human Reproduction, Department of Obstetrics and Gynecology, Medical School, University of Crete, Heraklion 71003, Greece.
| | - Achille Gravanis
- b Department of Pharmacology, Medical School, University of Crete, Heraklion 71003, Greece.
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Wakahashi S, Nakabayashi K, Maruo N, Yata A, Ohara N, Maruo T. Effects of corticotropin-releasing hormone and stresscopin on vascular endothelial growth factor mRNA expression in cultured early human extravillous trophoblasts. Endocrine 2008; 33:144-51. [PMID: 18484196 DOI: 10.1007/s12020-008-9071-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Revised: 03/29/2008] [Accepted: 04/25/2008] [Indexed: 01/23/2023]
Abstract
Corticotropin-releasing hormone (CRH) takes a role in the regulation of the onset of parturition. Stresscopin (SCP) is a high affinity ligand for CRH receptor (CRHR)-2. CRHR-2 inhibits VEGF-induced neovascularization. In the present study, we investigated the effects of CRH and SCP on VEGF expression in early placental extravillous trophoblasts (EVTs). Isolation and culture of trophoblasts differentiating into EVTs were performed by the enzymatic digestion of anchoring early placental villi. The presence of CRH, SCP, CRHR-1, and CRHR-2 in cultured EVTs was examined by RT-PCR and immunocytochemistry. The effects of CRH and SCP on VEGF mRNA levels in cultured EVTs were assessed by real-time RT-PCR. CRH, SCP, CRHR-1, and CRHR-2 were expressed in cultured EVTs at mRNA and protein levels. Treatment with either 100 nM CRH or 100 nM SCP for 24 h decreased VEGF mRNA levels in cultured EVTs. The CRH- and SCP-induced decrease in VEGF mRNA levels was counteracted by the concomitant treatment with CRHR-2 antagonist antisauvagine-30, but not with CRHR-1 antagonist antalarmin. We demonstrated that CRH and SCP inhibited VEGF mRNA expression in cultured EVTs through the interaction with CRHR-2, suggesting that CRH and SCP may inhibit angiogenesis during early placentation.
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Affiliation(s)
- Senn Wakahashi
- Department of Obstetrics and Gynecology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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Li HY, Shen JT, Chang SP, Hsu WL, Sung YJ. Calcitonin promotes outgrowth of trophoblast cells on endometrial epithelial cells: involvement of calcium mobilization and protein kinase C activation. Placenta 2007; 29:20-9. [PMID: 17983652 DOI: 10.1016/j.placenta.2007.09.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2006] [Revised: 09/25/2007] [Accepted: 09/29/2007] [Indexed: 10/22/2022]
Abstract
Embryo implantation is a complex process that requires coordinated trophoblast-endometrial interactions. During implantation, trophoblast cells of the attached blastocyst penetrate the luminal epithelium of the endometrium before invasion into the endometrial stroma. Previous studies demonstrated that calcitonin was actively secreted by rat and human endometrial epithelial cells (EEC) during the implantation window and targeted disruption of endometrial calcitonin expression dramatically decreased embryo implantation rates; however, the role and signal transduction of calcitonin in trophoblast-endometrial interactions remained unclear and are therefore examined in this study. BeWo trophoblast and RL95-2 EEC lines were used because they preserve many properties of their respective normal tissues. We co-cultured BeWo trophoblast spheroids with RL95-2 EEC monolayers to mimic the blastocyst-endometrial interaction, and found that most spheroids quickly attached to EEC monolayers and then progressively expanded, with marked displacement of EEC adjacent to the outgrowing trophoblast cells. Interestingly, pretreatment of EEC monolayers with calcitonin before the addition of spheroids significantly enhanced trophoblast expansion on EEC monolayers. Cytosolic calcium (Ca(2+)) levels in EEC increased rapidly upon exposure to calcitonin, and blockade of Ca(2+) release by BAPTA-AM effectively prevented the promoting effect of calcitonin on trophoblast expansion on EEC. The Ca(2+)-dependent protein kinase C (PKC) was also activated in EEC after calcitonin treatment, and the PKC inhibitors staurosporine and calphostin C could completely abolish calcitonin-induced augmentation of trophoblast expansion on EEC. Our results suggest that calcitonin promotes trophoblastic displacement of EEC through calcium mobilization and PKC activation, thereby facilitating embryo implantation.
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Affiliation(s)
- H-Y Li
- Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei 112, Taiwan
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Akutagawa O, Nishi H, Kyo S, Higuma C, Inoue M, Isaka K. Early growth response-1 mediates up-regulation of telomerase in placenta. Placenta 2007; 28:920-7. [PMID: 17485108 DOI: 10.1016/j.placenta.2007.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2007] [Revised: 03/13/2007] [Accepted: 03/15/2007] [Indexed: 11/22/2022]
Abstract
Telomerase is thought to play a very important role in oncogenesis. It is also believed to wind back the "mitotic clock" which leads to ageing and enable permanent cell division. We evaluated telomerase activity in chorionic tissues, with particular attention to the early growth response-1 (EGR-1) gene, the importance of what was recently shown by Khachigian et al. We started our study by evaluating the relationship between activation of transcription of the human telomerase reverse transcriptase (hTERT) gene and EGR-1 gene. For this purpose, we first evaluated telomerase activity using the villous cancer cell lines JAR and JEG-3. We then demonstrated that EGR-1 plays an important role in activation of the transcription of hTERT by luciferase assay using hTERT promoter constructs. As a result of further computer analysis, we discovered a site postulated to be an EGR-1 consensus binding site at -273 to -281 in the hTERT promoter region. With forced expression of EGR-1, an increase in hTERT protein concentration was detected on Western blot analysis, while marked high expression of hTERT mRNA was observed by reverse transcriptase polymerase chain reaction. Furthermore, we evaluated the expression of EGR-1 and hTERT at the mRNA level in the placenta during the first, second and third trimesters of pregnancy and in patients with preeclampsia. Expression of EGR-1 and hTERT in the chorion increased in the first trimester of pregnancy and decreased later. Increased expression was noted in the placenta of patients with preeclampsia. The present findings suggest that EGR-1 plays an important role in activating the transcription of hTERT, showing that activation of the transcription of hTERT by EGR-1 is involved in the trophoblast growth mechanism.
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Affiliation(s)
- O Akutagawa
- Department of Obstetrics and Gynecology, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan
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Fekete ÉM, Zorrilla EP. Physiology, pharmacology, and therapeutic relevance of urocortins in mammals: ancient CRF paralogs. Front Neuroendocrinol 2007; 28:1-27. [PMID: 17083971 PMCID: PMC2730896 DOI: 10.1016/j.yfrne.2006.09.002] [Citation(s) in RCA: 199] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2006] [Revised: 09/05/2006] [Accepted: 09/06/2006] [Indexed: 12/13/2022]
Abstract
Urocortins, three paralogs of the stress-related peptide corticotropin-releasing factor (CRF) found in bony fish, amphibians, birds, and mammals, have unique phylogenies, pharmacologies, and tissue distributions. As a result and despite a structural family resemblance, the natural functions of urocortins and CRF in mammalian homeostatic responses differ substantially. Endogenous urocortins are neither simply counterpoints nor mimics of endogenous CRF action. In their own right, urocortins may be clinically relevant molecules in the pathogenesis or management of many conditions, including congestive heart failure, hypertension, gastrointestinal and inflammatory disorders (irritable bowel syndrome, active gastritis, gastroparesis, and rheumatoid arthritis), atopic/allergic disorders (dermatitis, urticaria, and asthma), pregnancy and parturition (preeclampsia, spontaneous abortion, onset, and maintenance of effective labor), major depression and obesity. Safety trials for intravenous urocortin treatment have already begun for the treatment of congestive heart failure. Further understanding the unique functions of urocortin 1, urocortin 2, and urocortin 3 action may uncover other therapeutic opportunities.
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Affiliation(s)
- Éva M. Fekete
- Molecular and Integrative Neurosciences Department, The Scripps
Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
- Pécs University Medical School, 7602 Pécs,
Hungary
| | - Eric P. Zorrilla
- Molecular and Integrative Neurosciences Department, The Scripps
Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
- Harold L. Dorris Neurological Research Institute, The Scripps
Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
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