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Hryciuk MM, Schröter F, Hennicke L, Braun BC. Spheroid formation and luteinization of granulosa cells of felids in a long-term 3D culture. Differentiation 2023; 131:38-48. [PMID: 37079952 DOI: 10.1016/j.diff.2023.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 03/24/2023] [Accepted: 03/30/2023] [Indexed: 04/22/2023]
Abstract
In the present study, granulosa cells (GCs) from domestic cats and Persian leopard were cultured and characterized from selected days. The culture period was divided into two phases: maintenance, which lasted for 7 days, and luteinization, which followed for up to 11 days. Luteinization was performed on ultra-low attachment plates, supporting the formation of spheroids in a medium supplemented with insulin, forskolin, and luteinizing hormone (LH). GCs of domestic cat produced estradiol (E2) and progesterone (P4) during the maintenance phase. The gene expressions of some proteins involved in steroidogenesis were stable (STAR, HSD3B1) or decreased over time (CYP11A1, HSD17B1, CYP17A1, and CYP19A1), which was similar to the expressions of gonatropin receptors (LHCGR and FSHR). During the luteinization phase, P4 concentration significantly increased (P < 0.05), and E2, in contrast to the proliferation phase, was below detection range. The expression of genes of proteins involved in steroidogenesis (STAR, CYP11A1, HSD3B1, HSD17B1, CYP17A1, and CYP19A1) and of gonadotropin receptors (LHCGR and FSHR) significantly increased during the luteinization period, but some expressions exhibited a decrease at the end of the phase (LHCGR, FSHR, HSD17B1, CYP19A1). The morphology of the luteinized GCs of domestic cat resembled large luteal cells and had numerous vacuole-like structures. Also, the GCs of Persian leopard underwent luteinization, shown by increasing P4 production and HSD3B1 expression. This study confirms that GCs from felids can be luteinized in a 3D spheroid system which can be a basis for further studies on luteal cell function of felids. Additionally, we could show that the domestic cat can serve as a model species for establishing cell culture methods which can be transferred to other felids.
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Affiliation(s)
- Michał M Hryciuk
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, 10315, Berlin, Germany.
| | - Filip Schröter
- Department of Cardiovascular Surgery, Heart Center Brandenburg, University Hospital Brandenburg Medical School, 16321, Bernau, Germany; Brandenburg Medical School, Faculty of Health Sciences Brandenburg, 14770, Brandenburg, Germany
| | - Luise Hennicke
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, 10315, Berlin, Germany
| | - Beate C Braun
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, 10315, Berlin, Germany
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Braun BC, Jewgenow K. Role of sex steroids and prostaglandins during the luteal life cycle in domestic cats and lynxes. Domest Anim Endocrinol 2022; 78:106689. [PMID: 34688216 DOI: 10.1016/j.domaniend.2021.106689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 09/07/2021] [Accepted: 09/22/2021] [Indexed: 11/20/2022]
Abstract
Although lynxes and domestic cats are both felids, their luteal life cycles differ. As in many species, corpora lutea (CLs) of domestic cats regress after pregnancy or pseudopregnancy. By contrast, CLs of lynxes do not functionally regress following the cycle of their formation. They stay physiologically active and persist for several years. To obtain an improved understanding of the life cycle of both species, we comparatively studied the CLs of these species in detail. In this review, we summarize the similarities and differences of their CLs regarding sex steroid and prostaglandin generation and receptors. The most evident differences were visible in the CLs of lynxes, which persist from previous cycles, compared with CLs of lynxes and domestic cats from the recent luteal cycle. We assume that these differences could indicate processes ensuring long-term luteal survival and functionality, for example, by high estrogen production/metabolism or by antioxidative effects.
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Affiliation(s)
- B C Braun
- Department of Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, 10315, Berlin, Germany.
| | - K Jewgenow
- Department of Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, 10315, Berlin, Germany
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Hryciuk MM, Jewgenow K, Braun BC. Cloprostenol, a synthetic analog of prostaglandin F2α induces functional regression in cultured luteal cells of felids†. Biol Reprod 2021; 105:137-147. [PMID: 33864060 DOI: 10.1093/biolre/ioab070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/26/2021] [Accepted: 04/05/2021] [Indexed: 12/12/2022] Open
Abstract
In the present study, we investigated the effect of the synthetic analog of prostaglandin F2α (PGF2α)-cloprostenol-on cultured steroidogenic luteal cells of selected felid species over a 2-day culture period. The changes induced by cloprostenol were measured based on progesterone concentration and mRNA expression analysis of selected genes. Cloprostenol significantly reduced concentration of progesterone in cell culture medium of small luteal cells isolated from domestic cat corpora lutea (CL) at the development/maintenance stage (P < 0.05), but did not influence progesterone production in cultured cells from the regression stage. A decrease or complete silencing of progesterone production was also measured in cultured luteal cells of African lion (formation stage) and Javan leopard (development/maintenance stage). Gene-expression analysis by real-time PCR revealed that treatment with cloprostenol did not have an influence on expression of selected genes coding for enzymes of steroidogenesis (StAR, HSD3B, CYP11A1) or prostaglandin synthesis (PTGS2, PGES), nor did it effect hormone receptors (AR, ESR1, PGR, PTGER2), an anti-oxidative enzyme (SOD1) or factors of cell apoptosis (FAS, CASP3, TNFRSF1B, BCL2) over the studied period. Significant changes were measured only for expressions of luteinizing hormone (P < 0.05), prolactin (P < 0.05) and PGF2α receptors (P < 0.005) (LHCGR, PRLR, and PTGFR). The obtained results confirm that PGF2α/cloprostenol is a luteolytic agent in CL of felids and its impact on progesterone production depends on the developmental stage of the CL. Cloprostenol short-term treatment on luteal cells was associated only with functional but not structural changes related to luteal regression.
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Affiliation(s)
- Michał M Hryciuk
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, Berlin, Germany
| | - Katarina Jewgenow
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, Berlin, Germany
| | - Beate C Braun
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, Berlin, Germany
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Hryciuk MM, Jewgenow K, Braun BC. Luteinizing Hormone Effect on Luteal Cells Is Dependent on the Corpus Luteum Stage in Felids. Animals (Basel) 2021; 11:ani11010179. [PMID: 33466590 PMCID: PMC7828684 DOI: 10.3390/ani11010179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 01/08/2021] [Indexed: 12/22/2022] Open
Abstract
Simple Summary The corpus luteum is a transient endocrine gland on the mammalian ovary, and its main function is to produce progesterone. Knowledge about the corpus luteum in felids is very limited and luteolytic and luteotrophic factors which regulate its maintenance and regression are not extensively studied. Information about corpus luteum function is needed to understand breeding strategies and to successfully implement assisted reproductive techniques for felids, of which most of the species are threatened. The aim of this study was to reveal the effect of luteinizing hormone on cultured luteal cells from corpora lutea obtained from selected felids and to investigate the protein expression of steroidogenic enzyme 3β-hydroxysteroid dehydrogenase by immunohistology. Abstract The objective of this study was to investigate the effect of luteinizing hormone (LH) on steroidogenic luteal cells obtained from corpora lutea (CL) of the domestic cat and selected wild felids. Luteal cells were isolated enzymatically from CL at different developmental stages and cultured for two days in the presence and absence of 100 ng/mL LH, respectively. Functionality was assessed by progesterone (P4) accumulation in cell culture media determined by ELISA. In addition, steroidogenic function was confirmed using immunohistochemistry for 3β-hydroxysteroid dehydrogenase (HSD3B). The enzymatic method allowed for the isolation of mostly small luteal cells in all investigated felids. Treatment with LH resulted in an increase in P4 secretion of cultured luteal cells obtained from CL in the formation stage (African lion) and development/maintenance stage (domestic cat (p < 0.05), Javan leopard), whereas luteal cells from more advanced stages of luteal development (regression) responded moderately or not at all to LH stimulation (domestic cat, Asiatic golden cat, Asiatic lion). The protein signal for HSD3B on CL was visible until development/maintenance. In conclusion, this study shows that LH promotes P4 production in luteal cells only until the onset of regression, when morphological signs are visible on the CL of felids and HSD3B is no longer detectable.
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Zschockelt L, Amelkina O, Siemieniuch MJ, Kowalewski MP, Dehnhard M, Jewgenow K, Braun BC. Synthesis and reception of prostaglandins in corpora lutea of domestic cat and lynx. Reproduction 2016; 152:111-26. [DOI: 10.1530/rep-16-0180] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 05/23/2016] [Indexed: 12/11/2022]
Abstract
Felids show different reproductive strategies related to the luteal phase. Domestic cats exhibit a seasonal polyoestrus and ovulation is followed by formation ofcorpora lutea(CL). Pregnant and non-pregnant cycles are reflected by diverging plasma progesterone (P4) profiles. Eurasian and Iberian lynxes show a seasonal monooestrus, in which physiologically persistent CL (perCL) support constantly elevated plasma P4 levels. Prostaglandins (PGs) represent key regulators of reproduction, and we aimed to characterise PG synthesis in feline CL to identify their contribution to the luteal lifespan. We assessed mRNA and protein expression of PG synthases (PTGS2/COX2, PTGES, PGFS/AKR1C3) and PG receptors (PTGER2, PTGER4, PTGFR), and intra-luteal levels of PGE2and PGF2α. Therefore, CL of pregnant (pre-implantation, post-implantation, regression stages) and non-pregnant (formation, development/maintenance, early regression, late regression stages) domestic cats, and prooestrous Eurasian (perCL, pre-mating) and metoestrous Iberian (perCL, freshCL, post-mating) lynxes were investigated. Expression ofPTGS2/COX2, PTGES and PTGER4 was independent of the luteal stage in the investigated species. High levels of luteotrophic PGE2in perCL might be associated with persistence of luteal function in lynxes. Signals for PGFS/AKR1C3 expression were weak in mid and late luteal stages of cats but were absent in lynxes, concomitant with low PGF2αlevels in these species. Thus, regulation of CL regression by luteal PGF2αseems negligible. In contrast, expression of PTGFR was evident in nearly all investigated CL of cat and lynxes, implying that luteal regression, e.g. at the end of pregnancy, is triggered by extra-luteal PGF2α.
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Zschockelt L, Amelkina O, Koster S, Painer J, Okuyama MW, Serra R, Vargas A, Jewgenow K, Braun BC. Comparative analysis of intraluteal steroidogenic enzymes emphasises the functionality of fresh and persistent corpora lutea during pro--and metoestrus in the lynx. J Steroid Biochem Mol Biol 2015; 154:75-84. [PMID: 26170243 DOI: 10.1016/j.jsbmb.2015.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 06/30/2015] [Accepted: 07/05/2015] [Indexed: 10/23/2022]
Abstract
European lynx species demonstrate an atypical ovarian cycle compared to other felids. The physiological persistence of corpora lutea (CLs), reflected in constantly elevated progesterone (P4) concentrations in serum, is thought to ensure a seasonal monooestrus. Moreover, the coexistence of CLs from a recent ovulation (freshCLs) and persistent CLs from previous years (perCLs) on the same ovary has been proven. We assume that perCLs in lynxes occur due to fundamentally different mechanisms of luteal regression. Our study presents a detailed analysis of steroidogenic enzymes and steroids in fresh and perCLs obtained from Iberian lynxes during metoestrus, and in perCLs obtained from Eurasian lynxes during prooestrus. By quantitative PCR we measured relative mRNA amounts of steroidogenic acute regulatory protein (STAR), cytochrome P450 oxidases (CYPs), hydroxysteroid dehydrogenases (HSDs) and a steroid reductase (SRD). Protein expression in CLs was investigated for CYP11A1, CYP17A1, CYP19A1 and HSD3B. Additionally, the intraluteal and serum steroid content was determined. During metoestrus, mRNA amounts of STAR, CYP11A1, CYP19A1, HSD17B7 and SRD5A1 were significantly higher in perCLs compared to freshCLs. Protein of CYP11A1 was detected independently of the CL age in metoestrus, but expression was less evident in prooestrous perCLs. The protein signal of CYP17A1 was strong in freshCLs and perCLs of metoestrus, but weak at prooestrus. The presence of CYP19A1 protein was confirmed in each stage of the CL. These findings contribute to the hypothesis that CLs from previous years might support freshly developed CLs for pregnancy maintenance. However, initiation of ovulation might require a functional down-regulation of perCLs prior to breeding. It is noteworthy that the HSD3B1 mRNA amount was significantly elevated in fresh compared to perCLs (metoestrus). Accordingly, HSD3B protein was substantially present in freshCLs, whereas signals were literally absent in all perCLs. Elevated expression of HSD3B coincided with high intraluteal oestrogen concentrations in freshCLs; however, the enzyme pattern was less concordant with intraluteal P4 and androgen concentrations. Serum P4 concentrations of Iberian lynxes were constant between prooestrus and prolonged dioestrus. Moreover, constantly high serum oestrogen concentrations were measured during pro-, met- and prolonged dioestrus. The physiology of exceptionally high serum oestrogen concentrations outside the breeding season of lynxes merits further investigation. In conclusion our study supports the concept that the unique reproductive strategy of lynxes is directly linked to sustained intraluteal steroid biogenesis in persistent CLs.
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Affiliation(s)
- Lina Zschockelt
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, PF700430, 10324 Berlin, Germany.
| | - Olga Amelkina
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, PF700430, 10324 Berlin, Germany.
| | - Stefanie Koster
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, PF700430, 10324 Berlin, Germany.
| | - Johanna Painer
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, PF700430, 10324 Berlin, Germany.
| | - Minami W Okuyama
- Laboratory of Wildlife Biology and Medicine, Graduate School of Veterinary Medicine, Hokkaido University, 060-0818 Hokkaido, Japan.
| | - Rodrigo Serra
- National Center for Captive Breeding of the Iberian Lynx, 8375-082 Messines, Portugal.
| | - Astrid Vargas
- El Acebuche Iberian Lynx Captive Breeding Centre, Doñana, Matalascañas, Huelva 21760, Spain.
| | - Katarina Jewgenow
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, PF700430, 10324 Berlin, Germany.
| | - Beate C Braun
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, PF700430, 10324 Berlin, Germany.
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Amelkina O, Braun BC, Dehnhard M, Jewgenow K. The corpus luteum of the domestic cat: Histologic classification and intraluteal hormone profile. Theriogenology 2015; 83:711-20. [DOI: 10.1016/j.theriogenology.2014.11.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 10/30/2014] [Accepted: 11/04/2014] [Indexed: 11/16/2022]
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Zschockelt L, Amelkina O, Siemieniuch MJ, Koster S, Jewgenow K, Braun BC. Corpora lutea of pregnant and pseudopregnant domestic cats reveal similar steroidogenic capacities during the luteal life span. J Steroid Biochem Mol Biol 2014; 144 Pt B:373-81. [PMID: 25138635 DOI: 10.1016/j.jsbmb.2014.08.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 07/31/2014] [Accepted: 08/13/2014] [Indexed: 01/22/2023]
Abstract
In domestic cats, luteal phases of pregnancy and pseudopregnancy (non-pregnant luteal phase) differ in the course and level of plasma progesterone (P4). Therefore, we assumed differences in luteal steroidogenic capacities. Here we present a comprehensive analysis of intraluteal steroid biogenesis in the domestic cat. We quantitatively measured relative mRNA levels of steroidogenic acute regulatory protein (STAR), cytochrome P450 oxidases (CYP), hydroxysteroid dehydrogenases (HSD), steroid reductase (SRD) and enzymes involved in sulfoconjugation of steroids, i.e. sulfotransferase (SULT) and sulfatase (STS). Protein expression was analysed by Western Blot for HSD3B. Additionally, intraluteal steroid contents were determined. During the pseudopregnant luteal phase, expression of STAR (p=0.005), HSD3B1 (p<0.0001), CYP19A1 (p<0.0001) and HSD17B7 (p=0.008) decreased from formation of the corpus luteum (CL) onwards. HSD3B protein expression was highest in the development/maintenance stage of CL and declined during the subsequent luteal phase of pregnancy and pseudopregnancy. This was in accordance with decreasing intraluteal levels of P4, oestrogens and androgens. In contrast, expression of SRD5A1 (p<0.001) increased with progression through stages of the pseudopregnant CL, being indicative of P4 metabolism via an alternate pathway to dihydrotestosterone (DHT). Compared to the formation stage, expression of SULT1E1 was higher in all other luteal stages of pseudopregnancy (p=0.004), implying a potential sulfoconjugation of oestrogens. Expression of CYP11A1 and CYP17A1 was unaffected by the luteal stage (p>0.05), suggesting a permanent capacity of cat CL to convert progestogens via androgen and oestrogen pathways. In general, mRNA expression profiles of steroidogenic enzymes during the pregnant luteal phase reflected the pseudopregnancy profiles. Intraluteal oestrogen (p<0.0001) and androgen (p=0.008) levels were higher in the formation stage compared to the following luteal stages of pseudopregnancy. Concentrations of P4 were higher in the development/maintenance compared to the regression stages (p=0.01). We conclude that cat CL of the same histomorphological stage are characterised by identical steroidogenic capacities independently of an on-going pregnancy.
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Affiliation(s)
- Lina Zschockelt
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, PF700430, 10324 Berlin, Germany.
| | - Olga Amelkina
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, PF700430, 10324 Berlin, Germany.
| | - Marta J Siemieniuch
- Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences, Department of Reproductive Immunology and Pathology, Tuwima Street, Olsztyn 10-748, Poland.
| | - Stefanie Koster
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, PF700430, 10324 Berlin, Germany.
| | - Katarina Jewgenow
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, PF700430, 10324 Berlin, Germany.
| | - Beate C Braun
- Leibniz Institute for Zoo and Wildlife Research, Department of Reproduction Biology, PF700430, 10324 Berlin, Germany.
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Painer J, Goeritz F, Dehnhard M, Hildebrandt TB, Naidenko SV, Sánchez I, Quevedo Muñoz MA, Jewgenow K. Hormone-induced luteolysis on physiologically persisting corpora lutea in Eurasian and Iberian lynx (Lynx lynx and Lynx pardinus). Theriogenology 2014; 82:557-62. [DOI: 10.1016/j.theriogenology.2014.05.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 04/04/2014] [Accepted: 05/13/2014] [Indexed: 10/25/2022]
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Painer J, Jewgenow K, Dehnhard M, Arnemo JM, Linnell JDC, Odden J, Hildebrandt TB, Goeritz F. Physiologically persistent Corpora lutea in Eurasian lynx (Lynx lynx) - longitudinal ultrasound and endocrine examinations intra-vitam. PLoS One 2014; 9:e90469. [PMID: 24599348 PMCID: PMC3943960 DOI: 10.1371/journal.pone.0090469] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 02/03/2014] [Indexed: 11/18/2022] Open
Abstract
Felids generally follow a poly-estrous reproductive strategy. Eurasian lynx (Lynx lynx) display a different pattern of reproductive cyclicity where physiologically persistent corpora lutea (CLs) induce a mono-estrous condition which results in highly seasonal reproduction. The present study was based around a sono-morphological and endocrine study of captive Eurasian lynx, and a control-study on free-ranging lynx. We verified that CLs persist after pregnancy and pseudo-pregnancy for at least a two-year period. We could show that lynx are able to enter estrus in the following year, while CLs from the previous years persisted in structure and only temporarily reduced their function for the period of estrus onset or birth, which is unique among felids. The almost constant luteal progesterone secretion (average of 5 ng/ml serum) seems to prevent folliculogenesis outside the breeding season and has converted a poly-estrous general felid cycle into a mono-estrous cycle specific for lynx. The hormonal regulation mechanism which causes lynx to have the longest CL lifespan amongst mammals remains unclear. The described non-felid like ovarian physiology appears to be a remarkably non-plastic system. The lynx's reproductive ability to adapt to environmental and anthropogenic changes needs further investigation.
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Affiliation(s)
- Johanna Painer
- Department Reproduction Management and Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Forschungsverbund Berlin e.V., Berlin, Germany
- * E-mail:
| | - Katarina Jewgenow
- Department Reproduction Management and Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Forschungsverbund Berlin e.V., Berlin, Germany
| | - Martin Dehnhard
- Department Reproduction Management and Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Forschungsverbund Berlin e.V., Berlin, Germany
| | - Jon M. Arnemo
- Department of Forestry and Wildlife Management, Faculty of Applied Ecology and Agricultural Sciences, Hedmark University College, Campus Evenstad, Elverum, Norway
- Department of Wildlife, Fish and Environmental Studies, Faculty of Forest Sciences, Swedish University of Agricultural Sciences, Umeå, Sweden
| | | | - John Odden
- Norwegian Institute for Nature Research, Trondheim, Norway
| | - Thomas B. Hildebrandt
- Department Reproduction Management and Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Forschungsverbund Berlin e.V., Berlin, Germany
| | - Frank Goeritz
- Department Reproduction Management and Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Forschungsverbund Berlin e.V., Berlin, Germany
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Jewgenow K, Painer J, Amelkina O, Dehnhard M, Goeritz F. Lynx reproduction – Long-lasting life cycle of corpora lutea in a feline species. Reprod Biol 2014; 14:83-8. [DOI: 10.1016/j.repbio.2014.03.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 02/10/2014] [Accepted: 03/10/2014] [Indexed: 11/25/2022]
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12
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Jewgenow K, Amelkina O, Painer J, Göritz F, Dehnhard M. Life Cycle of FelineCorpora lutea: Histological and Intraluteal Hormone Analysis. Reprod Domest Anim 2012; 47 Suppl 6:25-9. [DOI: 10.1111/rda.12033] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 07/04/2012] [Indexed: 11/30/2022]
Affiliation(s)
- K Jewgenow
- Leibniz Institute for Zoo and Wildlife Research; Berlin; Germany
| | - O Amelkina
- Leibniz Institute for Zoo and Wildlife Research; Berlin; Germany
| | - J Painer
- Leibniz Institute for Zoo and Wildlife Research; Berlin; Germany
| | - F Göritz
- Leibniz Institute for Zoo and Wildlife Research; Berlin; Germany
| | - M Dehnhard
- Leibniz Institute for Zoo and Wildlife Research; Berlin; Germany
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13
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Carnaby K, Painer J, Söderberg A, Gavier-Widèn D, Göritz F, Dehnhard M, Jewgenow K. Histological and endocrine characterisation of the annual luteal activity in Eurasian lynx (Lynx lynx). Reproduction 2012; 144:477-84. [PMID: 22829688 DOI: 10.1530/rep-12-0166] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Lynx presents a unique sexual cycle with persistent corpora lutea (CLs) and elevated serum progesterone (P₄) throughout parturition and lactation. In other mammals, CLs normally disintegrate after parturition, therefore the aim of our study was to characterise the annual life cycle of lynx CLs. Ovaries from Eurasian lynxes were obtained from the National Veterinary Institute in Sweden, where tissues from killed lynx were stored at -20 °C. Ovaries from 66 animals were weighed; each corpus luteum was segmented for histology and hormone analysis. Ovary and CLs weights were constant throughout the year, peaking during pregnancy. In non-pregnant lynxes, the seasonal level of intraluteal steroids was steady for P₄ (3.2±1.9 s.d. μg/g, n=53) and total oestrogens (18.3±15.5 s.d. ng/g, n=53). Within histology slides, structurally intact luteal cells were found throughout the year with the highest incidence in March/April; evidence of luteal regression was predominantly found in post-breeding season. Ovaries from pregnant animals contained two types of CLs. Group A was bigger in size with large luteal cells (P₄, 72.3±65.4 s.d. μg/g; oestrogen, 454.0±52.4 s.d. ng/g). In contrast, group B were smaller, with greater luteal regression and lower steroid concentrations (P₄, 8.3±2.9 s.d. μg/g; oestrogen, 31.5±20.4 s.d. ng/g). Our results suggest that structural luteolysis proceeds throughout the year and into next breeding cycle, resulting in two CLs types on the same ovary.
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Affiliation(s)
- Kim Carnaby
- Leibniz Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Strasse 17, D-10315 Berlin, Germany
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Amoroso EC, Bourne GH, Harrison RJ, Matthews LH, Rowlands IW, Sloper JC. Reproductive and endocrine organs of foetal, newborn and adult seals. ACTA ACUST UNITED AC 2009. [DOI: 10.1111/j.1469-7998.1966.tb02909.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Graham LH, Goodrowe KL, Raeside JI, Liptrap RM. Non-invasive monitoring of ovarian function in several felid species by measurement of fecal estradiol-17β and progestins. Zoo Biol 1995. [DOI: 10.1002/zoo.1430140304] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Priedkalns J, Weber AF, Zemjanis R. Qualitative and quantitative morphological studies of the cells of the membrame granulosa, theca interna and corpus luteum of the bovine ovary. ZEITSCHRIFT FUR ZELLFORSCHUNG UND MIKROSKOPISCHE ANATOMIE (VIENNA, AUSTRIA : 1948) 1968; 85:501-20. [PMID: 5750939 DOI: 10.1007/bf00324744] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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DEANE HW, LOBEL BL, ROMNEY SL. Enzymic histochemistry of normal human ovaries of the menstrual cycle, pregnancy, and the early puerperium. Am J Obstet Gynecol 1962; 83:281-94. [PMID: 13884624 DOI: 10.1016/s0002-9378(16)35833-1] [Citation(s) in RCA: 52] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Duke KL. Some notes on the histology of the ovary of the bobcat (LYNX) with special reference to the corpora lutea. ACTA ACUST UNITED AC 1949; 103:111-31. [DOI: 10.1002/ar.1091030108] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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HARRISON RJ. THE DEVELOPMENT AND FATE OF THE CORPUS LUTEUM IN THE VERTEBRATE SERIES. Biol Rev Camb Philos Soc 1948; 23:296-331. [DOI: 10.1111/j.1469-185x.1948.tb00563.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Dawson AB. The effects of lactation on the postpartum involution of the uterus of the cat. ACTA ACUST UNITED AC 1946; 79:241-65. [DOI: 10.1002/aja.1000790204] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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