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Ohan H, Alruwaii FI, Montecalvo J, Al-Obaidy KI. Persistent Paramesonephric (Müllerian) Duct Remnant in Male Patients: Report of 2 Cases Presenting as Pelvic Masses. Int J Surg Pathol 2024; 32:1491-1493. [PMID: 38509866 DOI: 10.1177/10668969241235314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Affiliation(s)
- Hovsep Ohan
- Department of Pathology and Laboratory Medicine, Henry Ford Health, Detroit, MI, USA
| | - Fatimah I Alruwaii
- Department of Pathology and Laboratory Medicine, Henry Ford Health, Detroit, MI, USA
| | - Joseph Montecalvo
- Department of Pathology and Laboratory Medicine, Henry Ford Health, Detroit, MI, USA
| | - Khaleel I Al-Obaidy
- Department of Pathology and Laboratory Medicine, Henry Ford Health, Detroit, MI, USA
- Department of Medicine, College of Human Medicine, Michigan State University, East Lansing, MI, USA
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Chumsri S, Suwimonteerabutr J, Sirisawadi S, Thongphakdee A, Holst BS, Chatdarong K. Serum anti-Müllerian hormone is an indirect predictor of ovarian reserve in domestic cats. Theriogenology 2024; 226:151-157. [PMID: 38901214 DOI: 10.1016/j.theriogenology.2024.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/01/2024] [Accepted: 06/17/2024] [Indexed: 06/22/2024]
Abstract
Anti-Müllerian hormone (AMH) serves as an indirect marker for predicting primordial follicles that are representative of ovarian reserve. In this study the possibility of using AMH and age to predict the ovarian reserve in domestic cats. Ovaries and blood were collected from 30 cats undergoing routine ovariohysterectomy. The animals were divided into three age groups: prepubertal (<4 mo, n = 10), adult (1-5 y, n = 10), and senior (>5 y, n = 10). Blood was collected at surgery for serum AMH measurements using the AMH Gen II ELISA kit. The intra-assay coefficient of variation (CV) and inter-assay CV were 3.56 % and 7.68 %, respectively. One side of the ovary was processed to determine AMH localization using immunohistochemistry and for a histological count of follicles, which is the gold standard. The expression of AMH protein was quantified from the contralateral ovary by Western blot analysis. Primordial follicles exhibited the most pronounced inverse relationship with age (rho = -0.779, P < 0.05), followed by a positive association with serum AMH concentration (rho = 0.490, P < 0.05), indicating that both age and AMH are potential markers indicative of primordial follicles. Furthermore, secondary (rho = 0.651, P < 0.05) and small antral follicles (rho = 0.648, P < 0.05) were identified as the major sources of circulating AMH, as indicated by the stronger correlation with serum AMH concentrations compared with primary follicles. However, there was no significant correlation between the expression of AMH protein and other factors, including age, primordial follicles, primary follicles, secondary follicles, small antral follicles, and serum AMH concentration. A model for predicting primordial follicle number using serum AMH concentration (AIC = 672.66, P < 0.05) and age (AIC = 668.93, P < 0.05) was established. In conclusion, both serum AMH concentration and age may serve as comparable markers of ovarian reserve in domestic cats. Moreover, AMH is particularly useful in situations where age information is not available.
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Affiliation(s)
- Sittat Chumsri
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Junpen Suwimonteerabutr
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sujin Sirisawadi
- Unit of Biochemistry, Department of Physiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Ampika Thongphakdee
- Conservation and Research Institute, Zoological Park Organization of Thailand Under the Royal Patronage of H.M. the King, Bangkok 10300, Thailand
| | - Bodil Ström Holst
- Department of Clinical Sciences, Division of Reproduction, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Science, Uppsala 75007, Sweden
| | - Kaywalee Chatdarong
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand.
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Alexander T, Flock U, Klein R, Reese S, Meyer-Lindenberg A, Walter B. Physiological Anti-Müllerian Hormone Concentrations in Male and Female Dogs and Cats before and around Puberty. Animals (Basel) 2024; 14:2561. [PMID: 39272346 PMCID: PMC11394462 DOI: 10.3390/ani14172561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Revised: 08/22/2024] [Accepted: 08/29/2024] [Indexed: 09/15/2024] Open
Abstract
In recent years several studies established the diagnostic value of anti-Müllerian hormone (AMH) in companion animals. However, less is known about physiological AMH concentrations in young individuals highlighting the necessity to apply the diagnostic findings to this group. The aim of this study was to determine the AMH values of healthy male and female dogs between the age of 8 and 48 weeks, tomcats under 8 weeks and up to 48 weeks of age and queens between 2 to 12 weeks of age. In total, 96 blood samples were collected. Anti-Müllerian hormone was measured in all samples and testosterone was measured in the oldest age group of the males in both species. The hormones were analyzed using a human based chemiluminescence immune assay. Overall, AMH concentrations were higher in males than in females (p < 0.001). According to the AMH concentration there was no difference in males, but queens had significant higher AMH concentrations than bitches (p < 0.001). AMH remained high in males up to week 24 and decreased significantly thereafter (tomcats: p = 0.015; male dogs: p = 0.013), which correlated with an increase in testosterone levels for male dogs only. In bitches, AMH remained below the detection limit until the week 16 and slightly increased subsequently. In queens, AMH was detectable from the beginning with a significant increase in the older age group (p = 0.003). Half of the cats in the older age group even approached the chemiluminescence immune assay's upper limit. The results show that female cats secrete AMH much earlier than female dogs in which AMH secretion begins just shortly before the start of the puberty. In the male animals, the decrease in AMH concentration around puberty was similar in dogs and cats, but a correlation with the increase of testosterone was only observed in dogs. Further research is required to determine the origin of the high AMH concentrations in female kittens and the lack of correlation between testosterone and AMH concentrations in male kittens.
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Affiliation(s)
- Tanja Alexander
- Clinic of Small Animal Surgery and Reproduction, Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Veterinaerstr. 13, 80539 Munich, Germany
| | - Ulrike Flock
- Clinic of Small Animal Surgery and Reproduction, Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Veterinaerstr. 13, 80539 Munich, Germany
| | - Ruth Klein
- Laboklin GmbH & Co.KG, Steubenstr. 4, 97688 Bad Kissingen, Germany
| | - Sven Reese
- Chair of Anatomy, Histology and Embryology, Department of Veterinary Sciences, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Veterinaerstr. 13, 80539 Munich, Germany
| | - Andrea Meyer-Lindenberg
- Clinic of Small Animal Surgery and Reproduction, Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Veterinaerstr. 13, 80539 Munich, Germany
| | - Beate Walter
- Small Animals Clinic, Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Veterinaerstr. 13, 80539 Munich, Germany
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Balogh O, Szilágyi E, Balogh N, Somogyi Z, Müller L. Half-life of serum anti-Müllerian hormone and changes after gonadectomy in adult female and male dogs with normal and abnormal gonads. Theriogenology 2024; 217:18-24. [PMID: 38237213 DOI: 10.1016/j.theriogenology.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 02/09/2024]
Abstract
Anti-Müllerian hormone (AMH) is a biomarker for the presence of gonadal tissue. Changes in serum AMH after gonadectomy are not well established, and its serum half-life is unknown in dogs. We measured serum AMH with a validated electro-chemiluminescent immunoassay in adult female (n = 12) and male (n = 7) dogs with normal gonads, as well as in dogs with gonadal pathology (ovarian remnant syndrome, ORS n = 3, testicular tumor [Leydig cell, Sertoli cell, seminoma] n = 3, unilateral abdominal cryptorchid n = 4) on the day of gonadectomy (D0), and on D3, D7, D14 (females and males), and D21, D28 (males only). Males had higher AMH concentrations than females independent of gonadal status (P < 0.001). Dogs with ORS had lower initial AMH (0.45 ± 0.43 ng/ml) than bitches with normal gonads (1.16 ± 0.44 ng/ml; P = 0.027). Cryptorchid dogs had higher initial concentrations (80.57 ± 52.81 ng/ml) than males with normal gonads (7.92 ± 2.45 ng/ml; P = 0.004), and those with testicular tumors (18.63 ± 5.04 ng/ml) were intermediate (P ≥ 0.250). AMH decreased over time (P ≤ 0.012) and was 0.01-0.04 ng/ml by D14 in females and 0.02-0.12 ng/ml by D28 in males. Serum half-life in the whole study population was 2.85 ± 0.51 days and did not differ between groups. In conclusion, serum AMH can differentiate between intact and gonadectomized status of adult dogs by 14 days after ovario(hyster)ectomy in females and by 28 days after surgical castration in males.
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Affiliation(s)
- Orsolya Balogh
- Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, USA
| | - Eszter Szilágyi
- Department of Obstetrics and Food Animal Medicine Clinic, University of Veterinary Medicine Budapest, Hungary
| | | | - Zoltán Somogyi
- Department of Pharmacology and Toxicology, University of Veterinary Medicine Budapest, Hungary
| | - Linda Müller
- Department of Obstetrics and Food Animal Medicine Clinic, University of Veterinary Medicine Budapest, Hungary; ATRC Aurigon Ltd., Dunakeszi, Hungary.
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Chumsri S, Boonorrana I, Suwimonteerabutr J, Tipkantha W, Thongphakdee A, Chatdarong K. Serum anti-Müllerian hormone around the time of ovulation simulated by exogenous hormones in clouded leopards (Neofelis nebulosa). Reprod Domest Anim 2024; 59:e14516. [PMID: 38268213 DOI: 10.1111/rda.14516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/26/2023] [Accepted: 12/08/2023] [Indexed: 01/26/2024]
Abstract
Anti-Müllerian hormone (AMH) is produced by granulosa cells of the antral follicles. It serves as a promising biomarker for ovarian reserve and responsiveness to ovarian stimulation in humans and domestic animals. This study aimed to validate the AMH Gen II enzyme-linked immunosorbent assay (ELISA) and correlate ovarian structures with serum AMH concentrations after stimulation treatment in clouded leopards (Neofelis nebulosa). Serum samples were collected from 12 women (age 6.21 ± 3.56 years), and serum AMH concentrations were analysed using AMH Gen II ELISA. The animals were divided into two groups based on ovarian structures [preovulatory follicles (>2 mm) and/or corpora hemorrhagica] along with the presence of uterine tonicity visualized laparoscopically around the time of ovulation. Animals that exhibited these reproductive features were identified as the responder group (n = 9, aged 7.59 ± 2.96 years), whereas those lacking the corresponding features were assigned to the nonresponder group (n = 3, aged 2.06 ± 0.53 years). The intra-assay coefficient of variation (CV) and interassay CV was 3.56% and 7.75%, respectively. The linearity of AMH dilution was confirmed (r2 = .998), and the percentage of recovery ranged from 93% to 115%. The results demonstrated that overall serum AMH concentrations around the time of ovulation were negatively correlated with age (rs = -.692, p = .013). However, serum AMH concentrations were not correlated with the average number of ovarian structures (rs = -.535, p = .074). Thus, AMH Gen II ELISA was validated in clouded leopards. Around the time of ovulation, serum AMH decreased with advancing age and ovarian responsiveness cannot be evaluated using serum AMH.
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Affiliation(s)
- Sittat Chumsri
- Research Unit of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Itti Boonorrana
- Conservation and Research Institute, Zoological Park Organization of Thailand under the Royal Patronage of H.M. the King, Bangkok, Thailand
| | - Junpen Suwimonteerabutr
- Research Unit of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Wanlaya Tipkantha
- Conservation and Research Institute, Zoological Park Organization of Thailand under the Royal Patronage of H.M. the King, Bangkok, Thailand
| | - Ampika Thongphakdee
- Conservation and Research Institute, Zoological Park Organization of Thailand under the Royal Patronage of H.M. the King, Bangkok, Thailand
| | - Kaywalee Chatdarong
- Research Unit of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
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Santos LC, Silva JF. Molecular Factors Involved in the Reproductive Morphophysiology of Female Domestic Cat ( Felis catus). Animals (Basel) 2023; 13:3153. [PMID: 37835759 PMCID: PMC10571923 DOI: 10.3390/ani13193153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/31/2023] [Accepted: 09/06/2023] [Indexed: 10/15/2023] Open
Abstract
The domestic cat (Felis catus) is considered an important model for the study of feline reproductive morphophysiology. However, although the morphological changes and clinical signs that occur during the estrous cycle and pregnancy are well known, little is known about the molecular mechanisms involved in the reproductive physiology of this animal species. Thus, this paper reviews the current knowledge about the modulation and expression profile of hormonal, immunological, redox, and growth mediators involved in the uterine, ovarian, and placental morphophysiology of domestic cats.
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Affiliation(s)
| | - Juneo Freitas Silva
- Nucleo de Pesquisas em Reproducao e Endocrinologia, Centro de Microscopia Eletronica, Departamento de Ciencias Biologicas, Universidade Estadual de Santa Cruz, Campus Soane Nazare de Andrade, Ilheus 45662-900, Brazil;
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Prapaiwan N, Manee-In S, Thanawongnuwech R, Srisuwatanasagul S. Anti-Müllerian hormone levels in serum and testes of male dogs: relations with neuter status and bilateral abdominal cryptorchidism. Theriogenology 2023; 208:171-177. [PMID: 37352559 DOI: 10.1016/j.theriogenology.2023.06.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/11/2023] [Accepted: 06/11/2023] [Indexed: 06/25/2023]
Abstract
Anti-Müllerian hormone (AMH) analysis has contributed to new information in the reproductive endocrinology of domestic animals, due to clinically available diagnostic tools. An accurate and rapid diagnostic method to distinguish between neutered and bilateral abdominal cryptorchid dogs is needed in veterinary practice. Therefore, this study uses an enzyme-linked immunosorbent assay to evaluate the clinical relevance of AMH analysis in peripheral blood as a diagnostic tool for dogs with suspected bilateral abdominal cryptorchidism. The possible alteration of the AMH localization in testicular tissue caused by this pathologic condition was also investigated using immunohistochemistry. Male dogs were divided into three groups of healthy intact (n = 14), healthy castrated (n = 14), and bilateral abdominal cryptorchid (n = 14) dogs. The results demonstrated a higher level of serum AMH in the cryptorchid group compared to the intact group (P < 0.01), while serum AMH levels of all castrated dogs were below the limit of detection (<0.05 ng/mL). Moreover, the percentage of positive AMH immunostaining of the intact group was less than that of the cryptorchid group (P < 0.01). A significantly positive correlation was found between serum AMH concentration and localization in testicular tissues (r = 0.93, P < 0.01). Our findings suggest that AMH levels in the peripheral blood could be used as an alternative and rapid screening method for detecting dogs with abdominal cryptorchidism.
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Affiliation(s)
- N Prapaiwan
- Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University, Nakhon Pathom, 73170, Thailand
| | - S Manee-In
- Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University, Nakhon Pathom, 73170, Thailand
| | - R Thanawongnuwech
- Department of Veterinary Pathology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - S Srisuwatanasagul
- Department of Anatomy, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand.
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Ferré-Dolcet L, Bordogna M, Contiero B, Fontaine C, Bedin S, Romagnoli S. Anti-Müllerian Hormone Concentrations for Determining Resumption of Sertoli Cell Function following Removal of a 4.7 mg Deslorelin Implant in Tomcats. Animals (Basel) 2023; 13:2552. [PMID: 37627341 PMCID: PMC10451382 DOI: 10.3390/ani13162552] [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: 06/27/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 08/27/2023] Open
Abstract
Background: Deslorelin implant use in cats is a medical alternative to surgical sterilization, and due to its prolonged efficacy, its use has shown growing interest in the veterinary community. In the case of breeding facilities, its removal is often requested for the early restoration of testicular function. As anti-Müllerian hormones (AMH) in males is dependent of testosterone secretion, its assay may determine the restoration of testicular steroid secretion. An average of 3 weeks has been already described for tomcats' testicular function resumption after implant removal, but information about AMH concentrations in deslorelin-treated tomcats is lacking. Methods: Fourteen tomcats were treated for temporary suppression of fertility with a 4.7 mg deslorelin implant, which was surgically removed after 3, 6 or 9 months (n = 6, 4 and 4 tomcats, respectively). A general clinical and reproductive check with a gonadorelin stimulation test for testosterone determination was performed before deslorelin implant administration. After implant removal, tomcats' testicles were ultrasonographically checked for volume determination every 1-2 weeks with observation of the glans penis (presence or absence of spikes) and blood collection to assay both testosterone and AMH concentrations. Results: AMH concentrations increased significantly during the deslorelin treatment from 20.95 ± 4.97 ng/mL to 82.41 ± 14.59 ng/mL (p < 0.05). Following implant removal, AMH concentrations progressively decreased to pre-treatment levels, with a value of 28.42 ± 7.98 ng/mL on the third week post-removal where testosterone secretion was again detected. Conclusions: Even if a big variability of AMH concentrations exists between male individuals, resumption of tomcats' testicular function following a deslorelin treatment can be determined by AMH assay.
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Affiliation(s)
- Lluis Ferré-Dolcet
- Department of Animal Medicine, Production and Health, University of Padova, 35122 Padova, Italy (S.B.)
| | | | - Barbara Contiero
- Department of Animal Medicine, Production and Health, University of Padova, 35122 Padova, Italy (S.B.)
| | | | - Silvia Bedin
- Department of Animal Medicine, Production and Health, University of Padova, 35122 Padova, Italy (S.B.)
| | - Stefano Romagnoli
- Department of Animal Medicine, Production and Health, University of Padova, 35122 Padova, Italy (S.B.)
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Walter B. [Diagnostic utility of the anti-Mullerian hormone in companion animals]. TIERARZTLICHE PRAXIS. AUSGABE K, KLEINTIERE/HEIMTIERE 2023; 51:252-257. [PMID: 37820616 DOI: 10.1055/a-2146-6645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
The anti-Mullerian hormone is a glycoprotein secreted by Sertoli cells in males and granulosa cells in females. The initial identification of this hormone in canine and feline serum was achieved in 2011. Meanwhile, a variety of studies have demonstrated its clinical significance as a tool in the endocrine diagnosis. This review summarizes the current knowledge about anti-Mullerian hormone in small animal reproduction and describes future opportunities for its diagnostic usage.
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Affiliation(s)
- Beate Walter
- Chirurgische und Gynäkologische Kleintierklinik, Ludwig-Maximilians-Universität München
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Goux HJ, Vu BV, Wasden K, Alpadi K, Kumar A, Kalra B, Savjani G, Brosamer K, Kourentzi K, Willson RC. Development of a quantitative fluorescence lateral flow immunoassay (LFIA) prototype for point-of-need detection of anti-Müllerian hormone. Pract Lab Med 2023; 35:e00314. [PMID: 37181647 PMCID: PMC10172895 DOI: 10.1016/j.plabm.2023.e00314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 02/27/2023] [Accepted: 04/12/2023] [Indexed: 05/16/2023] Open
Abstract
Objective Anti-Müllerian Hormone (AMH) is a quantitative marker for ovarian reserve and is used to predict response during ovarian stimulation. Streamlining testing to the clinic or even to the physician's office would reduce inconvenience, turnaround time, patient stress and potentially also the total cost of testing, allowing for more frequent monitoring. In this paper, AMH is used as a model biomarker to describe the rational development and optimization of sensitive, quantitative, clinic-based rapid diagnostic tests. Design and Methods We developed a one-step lateral-flow europium (III) chelate-based fluorescent immunoassay (LFIA) for the detection of AMH on a portable fluorescent reader, optimizing the capture/detection antibodies, running buffer, and reporter conjugates. Results A panel of commercial calibrators was used to develop a standard curve to determine the analytical sensitivity (LOD = 0.41 ng/ml) and the analytical range (0.41-15.6 ng/ml) of the LFIA. Commercial controls were then tested to perform an initial evaluation of the prototype performance and showed a high degree of precision (Control I CV 2.18%; Control II CV 3.61%) and accuracy (Control I recovery 126%; Control II recovery 103%). Conclusions: This initial evaluation suggests that, in future clinical testing, the AMH LFIA will likely have the capability of distinguishing women with low ovarian reserve (<1 ng/ml AMH) from women with normal (1-4 ng/ml AMH) ovarian reserve. Furthermore, the LFIA demonstrated a wide linear range, indicating the assay's applicability to the detection of other health conditions such as PCOS, which requires AMH measurement at higher concentrations (>6 ng/ml).
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Affiliation(s)
- Heather J. Goux
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Binh V. Vu
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, USA
| | - Katherine Wasden
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, USA
| | | | | | | | | | - Kristen Brosamer
- Department of Biomedical Engineering, University of Houston, Houston, TX, USA
| | - Katerina Kourentzi
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, USA
| | - Richard C. Willson
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, USA
- Department of Biomedical Engineering, University of Houston, Houston, TX, USA
- Escuela de Medicina y Ciencias de la Salud, Tecnológico de Monterrey, Monterrey, Nuevo León, Mexico
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Serum antimüllerian hormone concentrations in female cats. Relation with ovarian remnant syndrome, ovarian cysts and gonadectomy status. Theriogenology 2023; 200:106-113. [PMID: 36805247 DOI: 10.1016/j.theriogenology.2023.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 01/30/2023] [Accepted: 02/10/2023] [Indexed: 02/12/2023]
Abstract
The aim of this study was to reveal (1) the determination of the serum antimüllerian hormone concentrations in cats with ovarian remnant syndrome and ovarian cyst, (2) the effectiveness of the serum antimüllerian hormone concentrations in detecting gonadectomy status, and (3) ovarian expression of the antimüllerian hormone in the ovarian cysts and ovarian remnant tissue. For this purpose, a total of 31 domestic cats older than 1 year, including ORS (n = 9), OC (n = 3), spayed (n = 8), and intact (n = 11), were used in the study. Serum and intrafollicular AMH concentrations were determined by the electrochemiluminescence immunoassay, and expression of the AMH was determined by the immunohistochemical method. The serum AMH concentration in the ORS group was 1.49 ± 1.24 ng/ml (0.10-3.63 ng/ml) whereas it was 1.78 ± 0.92 ng/ml (0.8-2.63 ng/ml) in the OC group. AMH concentration in the intrafollicular fluid was determined as 0.023 ng/ml in a cat with an ovarian cyst. While the serum AMH concentration was below 0.01 ng/ml in spayed cats, it was 5.80 ± 3.30 ng/ml (1.88-11.86 ng/ml) in the intact cats. There was a significant difference between the spayed and intact groups in terms of serum AMH concentration (p < 0.05). Moreover, in cats with ovarian cyst and ovarian remnant syndrome, no difference was found between the groups in terms of serum AMH concentration (p > 0.05). No difference was found between the ovarian remnant syndrome and intact cats in terms of serum AMH concentration (p > 0.05). In immunohistochemical staining, ovarian cysts were found to be negative for AMH while a moderate (+2) AMH positivity was observed in other follicles. Furthermore, in cats with ovarian remnant syndrome, severe (+3) AMH positivity was observed. As a result, it was determined that gonadectomy status can be accurately diagnosed by the AMH measurement. Ovarian remnant syndrome cannot be diagnosed accurately by AMH measurement. In addition, it was found that AMH did not seem to play a role in the pathogenesis of ovarian cysts in cats.
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Lapuente C, Faya M, Blanco PG, Grisolia-Romero M, Marchetti C, Gobello C. Anti-Müllerian hormone in queens: Serum concentrations and total ovarian follicle population. Theriogenology 2023; 197:111-115. [PMID: 36495634 DOI: 10.1016/j.theriogenology.2022.11.033] [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: 09/08/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/25/2022]
Abstract
The objectives of this study were: a) To report anti-Müllerian hormone (AMH) serum concentrations in neonatal, pre and postpubertal female cats. b) To establish the relationship between serum AMH with either age and estrous cycle c) To correlate the total number of different ovarian follicle types with AMH in adult queens. A single blood sample was collected from 10 neonates (including 5 male), 15 prepubertal and 48 postpubertal female cats to measure AMH. Eight, 10, and 18 of this latter group were in follicular (FP), luteal phase (LP), and anestrus (AN), respectively. The total number of each follicle type was histologically counted using the Gougeon and Chainy (1987) formula in a subgroup of 10 adult queens. Overall AMH mean of these the female cats was 6.31 ± 0.54 ng/mL. The neonatal females had lower AMH serum concentrations than their male littermates (2.56 ± 0.49 vs. >23 ng/mL; P < 0.01). Concentrations were also higher in prepubertal than in neonatal and postpubertal cats (11.79 ± 1.36 vs. 2.56 ± 0.49 vs. 4.87 ± 0.38 ng/mL; P < 0.01). Queens below 12 mo of age had the highest AMH levels (10.41 ± 1.16; P < 0.01). Age was inversely correlated with AMH (r = -0.5; P < 0.01). Animals in FP had lower AMH concentrations than AN females (2.51 ± 0.33 vs. 5.46 ± 0.76 ng/mL; P < 0.05). No difference in the total number of each follicle type were found between either ovary (P > 0.05). A high correlation was only found between small antral follicles and AMH concentrations (r = 0.85; P < 0.01). It was concluded, that AMH can provide an indirect, reliable marker for the assessment of ovarian follicle size and functionality. Age as well as pubertal state should be considered when evaluating AMH concentrations in this species.
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Affiliation(s)
- C Lapuente
- Center of Reproductive Physiology, Faculty of Veterinary Sciences, National University of La Plata, Argentina; CONICET, Argentina
| | - M Faya
- Catholic University of Cordoba, Argentina; CONICET, Argentina
| | - P G Blanco
- Center of Reproductive Physiology, Faculty of Veterinary Sciences, National University of La Plata, Argentina; CONICET, Argentina
| | - M Grisolia-Romero
- Center of Reproductive Physiology, Faculty of Veterinary Sciences, National University of La Plata, Argentina; Catholic University of Cordoba, Argentina; CONICET, Argentina
| | - C Marchetti
- Center of Reproductive Physiology, Faculty of Veterinary Sciences, National University of La Plata, Argentina; Catholic University of Cordoba, Argentina; CONICET, Argentina
| | - C Gobello
- Center of Reproductive Physiology, Faculty of Veterinary Sciences, National University of La Plata, Argentina; CONICET, Argentina.
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Chotimanukul S, Goericke-Pesch S, Suwimonteerabutr J, Singlor J, Sangkrachang E, Tummaruk P, Ponglowhapan S. Serum Anti-Müllerian Hormone Levels and Estrous Monitoring of GnRH Agonist Deslorelin-Induced Estrus in Bitches: A Pilot Study. Animals (Basel) 2023; 13:ani13020258. [PMID: 36670799 PMCID: PMC9855037 DOI: 10.3390/ani13020258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 01/14/2023] Open
Abstract
This study was performed to monitor estrous patterns and, more importantly, changes in anti-Müllerian hormone (AMH) concentrations during the peri-ovulatory period in deslorelin-induced estrous bitches. Healthy anestrous bitches (n = 4) were used. Estrus and ovulation were monitored after deslorelin implantation. Blood samples were collected for analysis of progesterone, estradiol-17ß and AMH concentrations before implantation (day 0) and on days 6, 8, 10, 12, 14, 16, 18, 20 and 22 after implantation. Six days following treatment, all bitches showed estrus signs. Ovulation took place between days 12 and 15. Circulating AMH concentrations varied among bitches from 0.12 to 3.08 ng/mL. However, no significant differences in AMH levels (mean ± SD) were observed between day 0 and days following post-implantation (p > 0.05). There were no significant correlations between AMH and estradiol or AMH and progesterone (p > 0.05). Ultrasonographically, the number of clearly identifiable ovarian follicles was higher before ovulation and the area of ovaries increased after ovulation (p < 0.05). Except for AMH, changes in vaginal cytology, estradiol-17ß and progesterone levels observed in our study were similar to naturally occurring estrus. Large intra- and inter-individual variation in AMH were observed suggesting that AMH is currently not suitable as a canine fertility marker to monitor ovarian response to deslorelin treatment for estrus induction.
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Affiliation(s)
- Sroisuda Chotimanukul
- Department of Obstetrics Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
- Research Unit for Obstetrics and Reproduction in Animals, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sandra Goericke-Pesch
- Reproductive Unit, Clinic for Small Animals, University of Veterinary Medicine Hannover, Foundation, 30559 Hannover, Germany
| | - Junpen Suwimonteerabutr
- Department of Obstetrics Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Jinda Singlor
- Department of Obstetrics Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Ekkaphot Sangkrachang
- Department of Obstetrics Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Padet Tummaruk
- Department of Obstetrics Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Suppawiwat Ponglowhapan
- Department of Obstetrics Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
- Research Unit for Obstetrics and Reproduction in Animals, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence: ; Tel.: +66-(0)2218-9644
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de Carvalho JC, Souza FF, Kastelic JP, Ferreira JCP. Reproduction in South American wild canids—A review. Front Vet Sci 2022; 9:986030. [PMID: 36353253 PMCID: PMC9637898 DOI: 10.3389/fvets.2022.986030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 09/19/2022] [Indexed: 11/21/2022] Open
Abstract
Canids occupy the top of the food chain and are fundamental in sustaining a wild animal/environmental balance. South America, the most biodiverse continent, has 11 species of canids inhabiting diverse biomes, with or without overlapping territories. Although several species are threatened, little is known about their reproductive biology. Remarkably, basic knowledge regarding ejaculate characteristics, sexual behavior, female reproductive cycles, pregnancy and management, and parturition are scarce or absent. These gaps complicate or preclude development of conservation programs. This review compiles the current knowledge of the reproductive biology of South American canids and discusses implications of this scenario.
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Affiliation(s)
- Jaqueline Candido de Carvalho
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
- Santo Amaro University, UNISA, São Paulo, Brazil
| | - Fabiana Ferreira Souza
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - John Patrick Kastelic
- Department of Production Animal Health, Faculty of Veterinary Medicine (UCVM), University of Calgary, Calgary, AB, Canada
| | - João Carlos Pinheiro Ferreira
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
- *Correspondence: João Carlos Pinheiro Ferreira
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Flock U, Reese S, Otzdorff C, Klein R, Walter B. Anti-Müllerian hormone concentrations in queens throughout the estrous cycle. Domest Anim Endocrinol 2022; 81:106749. [PMID: 35834880 DOI: 10.1016/j.domaniend.2022.106749] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 05/29/2022] [Accepted: 06/08/2022] [Indexed: 11/03/2022]
Abstract
Studies in cats and dogs have proven the usefulness of anti-Müllerian hormone (AMH) as a diagnostic tool to determine the castration status or to diagnose ovarian remnant syndrome. Yet the secretion pattern of AMH over the estrous cycle in queens has not been investigated so far. Seven healthy sexually intact female cats were examined daily for signs of estrous behavior over a trial period of 4 months. Five queens showed regular estrous behavior, 1 queen was mated in her first heat and 1 queen never showed any signs of heat. To distinguish between inter-estrus and metestrus progesterone levels were determined. Serum samples for AMH and progesterone measurement were collected from the regular cycling queens in late anestrus, at several times during heat, inter-estrus and metestrus, from the mated queen during her first heat and during pregnancy, and in the acycling queen at various times during the trial period. The measured AMH values in anestrus were significantly (P < 0.05) higher than in heat (P < 0.001), metestrus (P = 0.12) and inter-estrus (P = 0.449). In anestrus the median AMH levels were 10.26 ng/ml (range 4.96 to 22.90 ng/ml), in heat 5.97 ng/ml (range 3.32- 22.96 ng/ml), in inter-estrus 10.47 (range 3.35-22.96 ng/ml) and in metestrus 6.38 ng/ml (range 4.50-10.75 ng/ml. The pregnant cat showed median AMH concentrations of 6.47 ng/ml (range 5.60-9.80 ng/ml) during her pregnancy. The acycling queen had solely low AMH values with a median concentration of 0.39 ng/ml. In conclusion there were high variations of the AMH levels among and within the individual cats and between heat cycles in the single cat. Remarkable high AMH concentrations were measured in the younger queens of the study in their first estrous cycles and also in anestrus, when less ovarian activity is expected. Further studies are necessary to emphasize the reasons for these high AMH concentrations especially in young queens.
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Affiliation(s)
- Ulrike Flock
- Clinic of Small Animal Surgery and Reproduction, LMU Munich, Veterinaerstr. 13, Munich 80539, Germany
| | - Sven Reese
- Department of Veterinary Sciences, LMU Munich, Veterinaerstr. 13, Munich 80539, Germany
| | - Christiane Otzdorff
- Clinic of Small Animal Surgery and Reproduction, LMU Munich, Veterinaerstr. 13, Munich 80539, Germany
| | - Ruth Klein
- Laboklin GmbH and Co.KG, Steubenstr. 4, Bad Kissingen 97688, Germany
| | - Beate Walter
- Clinic of Small Animal Surgery and Reproduction, LMU Munich, Veterinaerstr. 13, Munich 80539, Germany.
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Böhmer F, Erber K, Ewringmann A, Klein R, Reese S, Böhmer C, Meyer-Lindenberg A, Walter B. Anti-Müllerian hormone concentrations in female rabbits and its relation to spay status, pseudopregnancy and ovarian follicle numbers. Reprod Domest Anim 2022; 57:1636-1643. [PMID: 36052807 DOI: 10.1111/rda.14240] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/22/2022] [Accepted: 08/31/2022] [Indexed: 11/28/2022]
Abstract
Anti-Müllerian hormone (AMH), known for its role during fetal sexual differentiation, is secreted by the Sertoli cells in males and the granulosa cells in females during postnatal life. As serum AMH concentrations correlate with follicle numbers, AMH is utilised as a marker of ovarian reserve in many species. In dogs and cats, AMH is used as a diagnostic tool to determine spay or neuter status. In the available literature, no research regarding serum AMH levels in rabbits has been published yet. The objectives of the present study were to 1) measure serum AMH concentrations in female rabbits and investigate the value of AMH as a diagnostic tool to differentiate between spayed and intact does, and 2) relate measured AMH levels to pseudopregnancy and ovarian follicle numbers. For AMH measurement, serum samples were obtained from sexually intact (n = 64) and spayed (n = 22) female rabbits. Spayed does were of various breeds; intact rabbits were Zika hybrid rabbits. In the intact does, AMH measurement was complemented by determination of progesterone levels, gynaecological examination, and histopathologic evaluation of the uterus and ovaries, including follicle counts. Serum AMH and progesterone concentrations were measured using a human-based chemiluminescence immunoassay (CLIA) and an enzyme-linked fluorescence assay (ELFA), respectively. Depending on progesterone levels, sexually intact does were classified into follicular (n = 52) or luteal phase (n = 12). Median serum AMH levels were 1.53 ng/ml (range 0.77 - 3.36 ng/ml) in intact and 0.06 ng/ml (range ≤ 0.01 - 0.23 ng/ml) in spayed does. AMH concentrations between the intact and spayed rabbits differed significantly and did not overlap (p < 0.001). Receiver operating characteristic (ROC) curve analysis yielded a sensitivity and specificity of 100% for a cut-off level of 0.50 ng/ml. Follicular or luteal phase had no significant influence on measured AMH levels (t = 0.061, df = 62, p = 0.951). While the number of secondary follicles correlated significantly with AMH concentrations (rs = 0.410, p = 0.001), the number of primary or antral follicles did not (rs = 0.241, p = 0.055 and rs = 0.137, p = 0.281, respectively). In conclusion, a single determination of serum AMH concentrations was adequate to distinguish spayed from intact female rabbits. Among sexually intact individuals, whether does were in follicular or luteal phase had no significant influence on measured serum AMH concentrations. The relationship between small growing follicles and AMH levels as described in other species could be partially confirmed, as secondary follicles correlated significantly with AMH.
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Affiliation(s)
- Florian Böhmer
- Faculty of Veterinary Medicine, Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Ludwig Maximilian University, Munich, Germany
| | - Katharina Erber
- Institute of Veterinary Pathology, Ludwig Maximilian University, Munich, Germany
| | - Anja Ewringmann
- Practice for small pets, Dr. Anja Ewringmann, Berlin, Germany
| | - Ruth Klein
- Laboklin GmbH & Co.KG, Bad Kissingen, Germany
| | - Sven Reese
- Institute of Veterinary Anatomy, Ludwig Maximilian University, Munich, Germany
| | - Christine Böhmer
- Zoological Institute, Zoology and Functional Morphology of Vertebrates, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
| | - Andrea Meyer-Lindenberg
- Faculty of Veterinary Medicine, Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Ludwig Maximilian University, Munich, Germany
| | - Beate Walter
- Faculty of Veterinary Medicine, Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Ludwig Maximilian University, Munich, Germany
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Schäfer-Somi S, Kaya D, Aslan S. Prepubertal Use of Long-Term GnRH Agonists in Dogs: Current Knowledge and Recommendations. Animals (Basel) 2022; 12:ani12172267. [PMID: 36077986 PMCID: PMC9454922 DOI: 10.3390/ani12172267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/22/2022] [Accepted: 08/27/2022] [Indexed: 11/16/2022] Open
Abstract
The search for an alternative approach of estrus control (induction or suppression) in dogs is an important issue and the use of slow GnRH agonist-releasing implants has been the subject of frequent research in recent years. Studies to date demonstrate that the short- and long-term effects of deslorelin implants applicated at different time points of the prepubertal period are similar to those of adult dogs; however, there are important differences. The age of the prepubertal bitch and the dosage appear to be the main determinants of the response to deslorelin, as well as the individual metabolism of the bitch. Recent studies reported that the deslorelin-mediated long-term delay of puberty does not have negative carry-over effects on subsequent ovarian functionality, serum steroid hormone concentrations, uterine health, and fertility; however, more molecular studies are needed to determine the effects of application time of GnRH agonists on hormone concentrations and peripheral receptor expression. Furthermore, the long-term effects of delay of puberty with deslorelin on joint health, tumor development, the immune system, and social behavior deserve further investigations.
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Affiliation(s)
- Sabine Schäfer-Somi
- Platform for Artificial Insemination and Embryo Transfer, Vetmeduni Vienna, 1210 Vienna, Austria
- Correspondence:
| | - Duygu Kaya
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, University of Kafkas, 36100 Kars, Turkey
| | - Selim Aslan
- Department of Obstetrics and Gynecology, Veterinary Faculty, Near East University, 99138 Nicosia, Cyprus
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Flock U, Fischer S, Weeger J, Reese S, Walter B. Anti-Müllerian hormone as a diagnostic tool to identify queens with ovarian remnant syndrome. J Feline Med Surg 2022; 24:e168-e174. [PMID: 35635063 PMCID: PMC9315174 DOI: 10.1177/1098612x221099195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVES Ovarian remnant syndrome (ORS) is suspected when heat signs occur in spayed individuals, but further diagnostic procedures are necessary to exclude other possible oestrogen sources, such as the adrenal gland or exogenous supplementation. Anti-Müllerian hormone (AMH), secreted by granulosa cells or Sertoli cells, serves to differentiate sexually intact from gonadectomised animals and has been described in dogs as a tool for diagnosing ORS. The aim of this study was to evaluate if AMH determination can be used to diagnose ORS in cats. METHODS AMH was measured with a chemiluminescence immunoassay in serum samples of 15 sexually intact, 9 spayed and 16 cats with a history of heat signs after spaying. Abdominal ultrasound (n = 13), vaginal smears (n = 7), progesterone measurement (n = 5) and laparotomy (n = 14) were used to determine the presence of ovarian tissue. After surgery, a histological examination of the obtained tissue was performed in the cats with suspected ORS. RESULTS In 15 cats with ORS the AMH serum concentrations were significantly higher than in spayed cats (n = 10; P = 0.025) and significantly lower than in sexually intact cats (n = 15; P = 0.001). Among the cats with ORS, the highest AMH serum concentrations were measured in the queens with cystic ovarian alterations and in one cat from which a whole ovary was obtained. The cat with the lowest AMH serum concentration had a simultaneous high progesterone serum concentration. Cats with ORS did not show any heat signs after surgical removal of the ovarian tissue. CONCLUSIONS AND RELEVANCE A single determination of AMH in blood serum is a useful diagnostic tool for the diagnosis of ORS in cats, regardless of the hormonal activity of the remnant ovarian tissue.
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Affiliation(s)
- Ulrike Flock
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
| | - Stine Fischer
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
| | - Jasmin Weeger
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
| | - Sven Reese
- Chair of Anatomy, Histology and Embryology, Department of Veterinary Sciences, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
| | - Beate Walter
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
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Clinical use of Anti-Müllerian Hormone to monitor resumption of ovarian activity following removal of a 4.7 mg deslorelin implant in queens. Vet Res Commun 2022; 46:917-924. [PMID: 35347540 DOI: 10.1007/s11259-022-09919-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 03/15/2022] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The use of deslorelin implants to control reproduction in cats is increasing but because of its prolonged duration, cat breeders often request implant removal before the end of the treatment. Assaying Anti Mullerian Hormone (AMH) concentrations might be useful to predict time of resumption of ovarian activity in deslorelin-treated queens following implant removal. In queens a minimum of 3 weeks during increasing photoperiod after implant removal has been described for resumption of ovarian activity but no information about AMH concentrations were observed for determining ovarian activity. ANIMALS Sixteen queens in which deslorelin implants were surgically removed after 3, 6 or 9 months (n = 6, 4 and 6 queens, respectively) were used in this study. PROCEDURES A general and reproductive health check with a GnRH stimulation test were performed before the treatment. After implant removal queens were checked every 1-2 weeks with reproductive ultrasonography, a vaginal smear and blood collection to assay AMH concentrations. RESULTS AMH concentrations decreased significantly at the end of the treatment to ≤ 2.5 + 0.6 ng/ml (p ≤ 0.05) and reached a nadir at 1.9 ± 0.9 (p < 0.05) one-week post-removal. Following implant removal AMH concentrations started to rise reaching a value of 3.9 ± 0.7 ng/ml on the third week and were not different from pre-treatment levels on week 6 post-removal (5.8 ng/ml + 0.9, p ≥ 0.05). AMH values did not differ depending on duration of deslorelin treatment but were lower in adult queens (p < 0.05). CLINICAL RELEVANCE AMH assay can be a useful tool to follow resumption of feline ovarian function following a deslorelin treatment.
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Walter B, Flock U, Leykam C, Otzdorff C, Simmet K, Hecht W, Kempker L, Aupperle-Lellbach H, Reese S. Serum anti-Müllerian hormone concentration as a diagnostic tool to identify testicular tissue in canine disorders of sexual development. Domest Anim Endocrinol 2022; 78:106654. [PMID: 34509739 DOI: 10.1016/j.domaniend.2021.106654] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 11/03/2022]
Abstract
Disorders of sexual development (DSD) may have their origin in alterations of the chromosomal, gonadal or phenotypic sex. Affected animals are usually presented because of ambiguous external genitalia, seldom because of reproductive disorders. Anti-Müllerian hormone (AMH) is secreted in the gonads with higher amounts in males than in females and can be used to identify gonadal tissue in sexually normally developed dogs. The aim of this study was to examine the diagnostic potential of serum AMH to identify testicular tissue in 11 dogs with DSD. The diagnostic procedures applied were: determination of the phenotypic sex (n = 11), genital ultrasound (n = 9), determination of the SRY gene (n = 11), karyogram (n = 6), gonadectomy (n = 11), pathohistology of the gonads (n = 10), serum AMH measurement (n = 11). 39 female dogs described in a previous study and 19 male dogs with a normal spermiogram served as controls for the AMH serum concentrations in sexually intact dogs. The 11 dogs with DSD were classified as 7 XY DSD and 4 XX DSD. Presumptive testes were obtained in 10 dogs and 1 dog had an ovotestis combined with a testis. Mean serum AMH values of the dogs with DSD were significantly higher (P < 0.001) than in male and female controls. The upper limit of the AMH test (≥ 23ng/ml) was reached in 6 dogs. High AMH concentrations have been described previously in cryptorchid dogs. 1 dog with a male phenotype and 2 with a female phenotype had AMH values within the range of the male controls, although all of them had cryptorchid testes. A Poodle, in which epididymis were identified but no definitive gonads, had an AMH concentration of the lower limit of the test (≤ 0.01 ng/ml), comparable to previously described castrated dogs. This study indicates that serum AMH levels are a useful diagnostic tool to identify testicular tissue in dogs with DSD and suggests the possible use of AMH to diagnose testicular dysgenesis.
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Affiliation(s)
- B Walter
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany.
| | - U Flock
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
| | - C Leykam
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
| | - C Otzdorff
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
| | - K Simmet
- Chair for Molecular Animal Breeding and Biotechnology, LMU Munich, Oberschleißheim, Germany
| | - W Hecht
- Institute of Veterinary Pathology, Justus-Liebig-University, Giessen, Germany
| | - L Kempker
- Laboklin GmbH & Co.KG, Bad Kissingen, Germany
| | | | - S Reese
- Chair of Anatomy, Histology and Embryology, Department of Veterinary Sciences, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
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Marchetti C, Faya M, Priotto M, Grisolia‐Romero M, Gobello C. Long‐term reproductive evaluation of a bitch neonatally treated with a gonadotropin‐releasing hormone agonist. VETERINARY RECORD CASE REPORTS 2021. [DOI: 10.1002/vrc2.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Cynthia Marchetti
- Small Animal Clinics Faculty of Agricultural Sciences Catholic University of Córdoba Córdoba Argentina
- Center of Reproductive Physiology Faculty of Veterinary Sciences National University of La Plata La Plata Argentina
- National Research Council Argentina
| | - Marcela Faya
- Small Animal Clinics Faculty of Agricultural Sciences Catholic University of Córdoba Córdoba Argentina
- National Research Council Argentina
| | - Marcelo Priotto
- Small Animal Clinics Faculty of Agricultural Sciences Catholic University of Córdoba Córdoba Argentina
| | - Mariela Grisolia‐Romero
- Small Animal Clinics Faculty of Agricultural Sciences Catholic University of Córdoba Córdoba Argentina
- Center of Reproductive Physiology Faculty of Veterinary Sciences National University of La Plata La Plata Argentina
- National Research Council Argentina
| | - Cristina Gobello
- Center of Reproductive Physiology Faculty of Veterinary Sciences National University of La Plata La Plata Argentina
- National Research Council Argentina
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Novak S, Yakobson B, Sorek S, Morgan L, Tal S, Nivy R, King R, Jaebker L, Eckery DC, Raz T. Short Term Safety, Immunogenicity, and Reproductive Effects of Combined Vaccination With Anti-GnRH (Gonacon) and Rabies Vaccines in Female Feral Cats. Front Vet Sci 2021; 8:650291. [PMID: 34041290 PMCID: PMC8141635 DOI: 10.3389/fvets.2021.650291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 04/07/2021] [Indexed: 11/29/2022] Open
Abstract
Overpopulation of free-roaming cats is a major problem leading to negative impacts on animal health and welfare, public nuisance, transmission of zoonotic diseases, and well-documented harm to wildlife. Surgical sterilization had failed to provide a practical solution to free-roaming cats' overpopulation under field conditions; therefore, efficient and safe non-surgical immunocontraception methods are aspired. Rabies is a deadly virus that may infect people and animals. However, the safety and efficacy of combined vaccination with anti-GnRH and rabies vaccines in feral cats, which often suffer from disrupted health conditions and experienced high stress level, has never been studied. Therefore, our objective was to examine the short-term safety and efficacy of anti-GnRH vaccine (Gonacon), in combination with rabies vaccine in female feral cats. Mature feral female cats were captured and divided into the following groups: (I) GonaconX1-Rabies: queens vaccinated with both Gonacon and rabies (n = 5); (II) GonaconX2-Rabies: queens vaccinated twice with Gonacon (3 weeks apart) and with Rabies (n = 4); (III) OVx-Rabies: queens ovariohysterectomized and vaccinated with rabies (n = 4); (IV) Intact-Rabies: queens vaccinated against rabies and remained intact (n = 3). Comprehensive veterinary examinations and blood tests were performed every 2 weeks for 14 weeks. Data were analyzed by Repeated-Measures-ANOVA or Fisher-Exact-Test. There were neither systemic nor local adverse reactions at the vaccination sites. Blood count (PCV, TS, RBC, HGB, HCT, WBC) and chemistry (Total protein, Total globulin, Albumin, Urea, Creatinine, Creatine kinase, Bilirubin, GGT, ALT, AST) analyses revealed no differences among groups. There were no differences in serum rabies antibodies titers among groups, and queens kept a protective titer (>0.5 IU/mL) starting at 2–4 weeks after vaccination. Anti-GnRH antibodies were detected in all Gonacon-vaccinated queens, excluding one queen (GonaconX2-Rabies group). Anti-müllerian hormone serum concentrations reduced significantly after ovariohysterectomy, as well as gradually following vaccination with Gonacon, but it remained high in intact queens. Evaluation of vaginal cytology and ovarian histology suggested that reproductive cyclicity was suppressed in Gonacon-vaccinated queens. Our results support the conclusion that in the short term, the combined vaccination with Gonacon and rabies is safe and effective in female feral cats. However, further long-term studies are warranted to test this immunologic regimen in feral cats.
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Affiliation(s)
- Shiri Novak
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agricultural, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Boris Yakobson
- Kimron Veterinary Institute, Ministry of Agriculture, Rishon Lezion, Israel
| | - Shir Sorek
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agricultural, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Liat Morgan
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agricultural, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Smadar Tal
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agricultural, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Ran Nivy
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agricultural, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Roni King
- Israel Nature and Parks Authority, Jerusalem, Israel
| | - Lauren Jaebker
- National Wildlife Research Center, United States Department of Agriculture Animal and Plant Health Inspection Service Wildlife Services, Fort Collins, CO, United States
| | - Douglas C Eckery
- National Wildlife Research Center, United States Department of Agriculture Animal and Plant Health Inspection Service Wildlife Services, Fort Collins, CO, United States
| | - Tal Raz
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agricultural, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
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Fontes GS, McCarthy RJ. Ovarian remnant syndrome in a cat with ovarian tissue in the omentum. J Am Vet Med Assoc 2021; 257:631-634. [PMID: 32856997 DOI: 10.2460/javma.257.6.631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
CASE DESCRIPTION A 2-year-old spayed female domestic shorthair cat was evaluated for recurring estrous behavior after ovariohysterectomy and 2 subsequent exploratory laparotomies. CLINICAL FINDINGS Physical examination revealed no abnormalities. A serum sample tested positive for anti-Müllerian hormone and had a progesterone concentration consistent with the presence of an ovarian remnant. Results of abdominal ultrasonographic examination suggested presence of a slightly hyperechoic mass caudal to the left kidney. TREATMENT AND OUTCOME Exploratory laparotomy was performed when the cat was showing estrous behavior. Tissues at the right and left ovarian pedicles and the uterine stump appeared grossly normal but were excised and submitted for histologic examination. Two small nodules associated with the omentum were removed, and histologic examination results for one of these nodules indicated ovarian tissue with secondary and graafian follicles. Clinical signs of estrus resolved after surgery, and hormonal assay results were within ranges expected for an ovariectomized cat. CLINICAL RELEVANCE To the authors' knowledge, the present case represented the first clinical report of ovarian remnant syndrome in a cat or dog in which persistent ovarian tissue was not found at the site of an ovarian pedicle. Our findings emphasized the importance of exploring the entire abdominal cavity when evaluating a patient for possible ovarian remnant tissue and confirming the excision of ovarian remnant tissue by histologic assessment.
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Ferriani R, Moyano HR, Verde D, Bottero E. Minimally invasive treatment of an intramural monolateral ectopic urether in a French bulldog with 78, XX (SRY‐negative) ovotesticular disorder of sexual development. VETERINARY RECORD CASE REPORTS 2021. [DOI: 10.1002/vrc2.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Riccardo Ferriani
- Ospedale Veterinario San Francesco Via Isaac Newton 2 Milan 20135 Italy
- ENDOVET Milano Via Isaac Newton 2 Milan 20135 Italy
| | | | - Davide Verde
- Ospedale Veterinario San Francesco Via Isaac Newton 2 Milan 20135 Italy
| | - Enrico Bottero
- Ospedale Veterinario San Francesco Via Isaac Newton 2 Milan 20135 Italy
- ENDOVET Ceva Regione Costa 10, Ceva 12073 Italy
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Place NJ, Cheraskin JL, Hansen BS. Evaluation of combined assessments of serum anti-Müllerian hormone and progesterone concentrations for the diagnosis of ovarian remnant syndrome in dogs. J Am Vet Med Assoc 2020; 254:1067-1072. [PMID: 30986154 DOI: 10.2460/javma.254.9.1067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine the usefulness of combined assessments of serum anti-Müllerian hormone (AMH) and progesterone (P4) concentrations for diagnosis of ovarian remnant syndrome (ORS) in dogs. DESIGN Prospective case series. ANIMALS 602 bitches that had previously undergone ovariohysterectomy or ovariectomy without hysterectomy and that were being evaluated for ORS. PROCEDURES Serum AMH and P4 concentrations were measured in a single serum sample obtained from each of the 602 dogs; results were classified as positive, negative, or inconclusive. Following AMH testing, submitting veterinarians were offered reimbursement for shipping and histologic evaluation of any tissue removed during treatment of dogs for which serum samples had been assessed. RESULTS Tissue samples were provided from 53 of 55 dogs that underwent surgical abdominal exploration. Of 48 dogs with histologically confirmed ORS, 25 were positive for both AMH and P4 and 23 were positive for AMH or P4 or test results were inconclusive. No dogs with histologically confirmed ORS were negative for both AMH and P4. Tissue samples that included no ovarian tissue were obtained from 5 dogs that were positive for both AMH and P4. In 2 dogs that were negative for both AMH and P4, no ovarian remnant was identified and no tissue was removed at the time of exploratory surgery. CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that combined determination of AMH and P4 concentrations in a single serum sample can be an effective diagnostic test for spayed dogs suspected to have ORS. Histologic analysis of excised tissues to assess the completeness of surgical treatment in dogs with ORS is warranted.
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Songsasen N, Nagashima J. Intraovarian regulation of folliculogenesis in the dog: A review. Reprod Domest Anim 2020; 55 Suppl 2:66-73. [PMID: 32347633 DOI: 10.1111/rda.13657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 02/07/2020] [Accepted: 02/10/2020] [Indexed: 11/30/2022]
Abstract
Dog reproductive cycle is unique among other mammals in that females experience long and variable periods of ovarian inactivity. Neuroendocrine controls of the reproductive cycle have been thoroughly studied in the dog. However, there is little information regarding endocrine, paracrine and autocrine controls of dog ovarian folliculogenesis. Advancements in the understanding of mechanisms regulating dog ovarian follicle development will be helpful in the establishment of an approach to control cyclicity in this species. Furthermore, such information will likely be useful for the establishment of an in vitro follicle culture system to preserve fertility of genetically valuable disease models or endangered canids. This review highlights current knowledge on dog folliculogenesis with emphasis on endocrine, paracrine and autocrine controls of follicular development.
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Affiliation(s)
- Nucharin Songsasen
- Center for Species Survival, Smithsonian Conservation Biology Institute, Front Royal, VA, USA
| | - Jennifer Nagashima
- Center for Species Survival, Smithsonian Conservation Biology Institute, Front Royal, VA, USA
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Walter B. Anti-Müllerian hormone in dogs and cats reproduction. Reprod Domest Anim 2020; 55 Suppl 2:26-31. [PMID: 32031297 DOI: 10.1111/rda.13603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 11/25/2019] [Accepted: 12/08/2019] [Indexed: 12/18/2022]
Abstract
The anti-Müllerian hormone (AMH) is a glycoprotein secreted by Sertoli cells in males and granulosa cells in females. It has first been determined in blood serum of dogs and cats by Place et al. in 2011 with the use of a human-based ELISA test. Meanwhile, different immunoassays have been validated for AMH determination in animals and a variety of studies have demonstrated the clinical significance of AMH. This review summarizes the current knowledge about AMH in dogs and cats and describes future opportunities for its diagnostic use.
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Affiliation(s)
- Beate Walter
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Munich, Germany
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Bergman D, Larsson A, Hansson-Hamlin H, Ström Holst B. Investigation of interference from canine anti-mouse antibodies in hormone immunoassays. Vet Clin Pathol 2019; 48 Suppl 1:59-69. [PMID: 31318069 DOI: 10.1111/vcp.12764] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 02/25/2019] [Accepted: 03/10/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Canine anti-mouse antibodies are a potential source of immunoassay interference, but erroneous immunoassay results are not always easily identifiable. Anti-Müllerian hormone (AMH) is a marker for the presence of gonads in dogs, but elevated AMH concentrations in neutered dogs could also be caused by antibody interference. For other assays, a discrepant result obtained after antibody precipitation might indicate antibody interference. OBJECTIVES We aimed to evaluate if canine anti-mouse antibodies are a source of erroneous results in the AMH assay and if antibody precipitation with polyethylene glycol (PEG) is a useful tool for detecting antibody interference in a variety of immunoassays used in the veterinary clinical laboratory. METHODS Twenty-nine positive and 25 negative samples for anti-mouse antibodies were analyzed for AMH, canine total thyroxine (TT4 ), canine thyroid-stimulating hormone (TSH) and progesterone before and after treatment with PEG. Results that differed by more than four SDs from the intra-assay coefficients of variation were considered discrepant. Elevated AMH concentrations in neutered dogs with anti-mouse antibodies and no visible gonads present were considered evidence of interference. RESULTS Evidence of antibody interference was found in two samples analyzed for AMH. The presence of anti-mouse antibodies did not lead to a higher proportion of discrepant results after PEG treatment for any of the immunoassays. The overall incidence of discrepant results for healthy controls was very high (73%). CONCLUSIONS Canine anti-mouse antibodies are a source of erroneous AMH results. Antibody precipitation with PEG is not a useful tool for detecting interference caused by such antibodies.
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Affiliation(s)
- Daniel Bergman
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Anders Larsson
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Helene Hansson-Hamlin
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Bodil Ström Holst
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Karakas Alkan K, Ceylan A, Alkan H, Ozen D, Bayraktaroglu AG, Kaymaz M. Immunohistochemical and qPCR determination of the expression and serum level of anti-Müllerian hormone in pre-pubertal, intact and ovarian remnant syndrome detected bitches. Reprod Domest Anim 2019; 54:979-986. [PMID: 31050839 DOI: 10.1111/rda.13451] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 04/26/2019] [Indexed: 11/30/2022]
Abstract
The aim of this study was to determine the serum concentrations, ovarian presence and expression of anti-Müllerian hormone (AMH) in pre-pubertal, bitches with signs of ovarian remnant syndrome (ORS) and intact bitches. In addition, we aimed to verify the suitability of serum AMH concentrations for diagnostic purposes in sterilized bitches and/or in suspected cases of ORS in the field of veterinary medicine. For this purpose, 36 healthy female dogs divided into six groups: proestrus, oestrus, dioestrus, anoestrus, pre-pubertal and ORS. Serum AMH concentrations were determined by electrochemiluminescence immunoassay, and ovarian presence and distribution of AMH was confirmed by immunohistochemical and qPCR techniques. According to the results of qPCR, while the expression values of AMH were at the highest concentrations in the proestrus and oestrus, there was a statistically significant decrease in these values at the later stages of the cycle (p < 0.05). According to hormone analysis, the serum AMH values of the ORS group had decreased significantly compared with the proestrus and oestrus (p < 0.05). Although serum AMH levels of ORS group were increased compared with anestrus and pre-pubertal groups, this increase was statistically non-significant (p > 0.05). Immunohistochemically, AMH expression was first observed in the granulosa cells of primordial follicles in folliculogenesis. Expression values were the highest in the proestrous and oestrus groups, but values from bitches in later stages of the cycle were statistically significant decrease in comparison with these groups (p < 0.05). As a result, AMH concentration and expression were found to be higher in proestrus and oestrus than in other periods (p < 0.05). In addition, the measurable level of AMH concentration in bitches with ORS is an indication that it can be used in the diagnosis of ORS.
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Affiliation(s)
- Kubra Karakas Alkan
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey
| | - Ahmet Ceylan
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey
| | - Hasan Alkan
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Selcuk University, Konya, Turkey
| | - Dogukan Ozen
- Department of Biostatistics, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey
| | - Alev Gurol Bayraktaroglu
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey
| | - Mustafa Kaymaz
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey
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Walter B, Feulner H, Otzdorff C, Klein R, Reese S, Meyer-Lindenberg A. Changes in anti-Müllerian hormone concentrations in bitches throughout the oestrous cycle. Theriogenology 2019; 127:114-119. [PMID: 30685686 DOI: 10.1016/j.theriogenology.2019.01.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/22/2018] [Accepted: 01/11/2019] [Indexed: 11/15/2022]
Abstract
Studies in female dogs proved the measurement of anti-Müllerian hormone (AMH) as a diagnostic tool to distinguish ovarioectomized from intact females or to diagnose ovarian remnant syndrome. Furthermore, its usability to diagnose a granulosa cell tumour and predict litter size was also investigated in female dogs. Although serum AMH was previously shown to increase during the transition from anoestrus to pro-oestrus in dogs, changes in AMH concentration over the entire oestrous cycle have not yet been determined. The aim of this study was to investigate the secretion pattern of AMH throughout the oestrous cycle in non-pregnant bitches. As a preliminary step, we tested our assay by measuring AMH concentrations in serum samples of 19 intact bitches (10 in anoestrus, 3 in pro-oestrus, 3 in oestrus, 3 in metoestrus) and 19 spayed females of different age and breed. For the main study, 20 healthy female dogs were examined (10 Beagles, and 10 Labrador crossbreeds, body weight 10-28 kg, age 1-6 years) during a normal oestrous cycle. Serum samples were collected in late anoestrus, at several times during pro-oestrus and oestrus, as well as 28 days and 4.5 months after ovulation. Blood collection was combined with a gynaecological examination including progesterone measurement. Serum concentration of AMH was determined using a chemiluminescence immunoassay validated for dog serum. In the preliminary test, intact bitches in various stages of the oestrous cycle had significantly higher serum AMH levels (0.19-1.45 ng/ml) than spayed females (0.01-0.06 ng/ml, P < 0.001). In cycling Beagle and Labrador crossbreed bitches participating in our main study, AMH concentrations were between 0.09 and 2.65 ng/ml with higher AMH concentrations in Beagles but overall high inter-individual and intra-individual variation. The highest AMH values were reached in the last three weeks before the onset of heat until six days before ovulation, and the lowest AMH concentrations were recorded during preovulatory oestrus in 6, metoestrus in 7 or anoestrus in 7 dogs. Serum AMH concentrations increased significantly from late anoestrus up to six days before ovulation and decreased significantly over the last three days before ovulation. A further significant decrease occurred from the last days of oestrus to metoestrus and mid anoestrus. This study shows that the used AMH assay can clearly distinguish between intact and spayed females and that the serum AMH pattern over the oestrous cycle is similar in all bitches, but with high variation among the breeds and among and within bitches. These changes in the AMH concentration are a challenge in timing serum sample collection and interpreting AMH values in bitches. Further studies are necessary to emphasize the factors influencing the AMH concentration.
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Affiliation(s)
- Beate Walter
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Veterinaerstr. 13, 80539, Munich, Germany.
| | - Hans Feulner
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Veterinaerstr. 13, 80539, Munich, Germany
| | - Christiane Otzdorff
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Veterinaerstr. 13, 80539, Munich, Germany
| | - Ruth Klein
- Laboklin GmbH & Co.KG, Steubenstr. 4, 97688, Bad Kissingen, Germany
| | - Sven Reese
- Chair of Anatomy, Histology and Embryology, Department of Veterinary Sciences, Faculty of Veterinary Medicine, LMU Munich, Veterinaerstr. 13, 80539, Munich, Germany
| | - Andrea Meyer-Lindenberg
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Veterinaerstr. 13, 80539, Munich, Germany
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Krecic MR, DiGangi BA, Griffin B. Accuracy of a point-of-care luteinizing hormone test for help in distinguishing between sexually intact and ovariectomized or castrated domestic cats. J Feline Med Surg 2018; 20:955-961. [PMID: 29099270 PMCID: PMC11129251 DOI: 10.1177/1098612x17738856] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Objectives The aim of this study was to determine the accuracy of a commercial luteinizing hormone (LH) test as an aid in distinguishing between sexually intact and ovariectomized or castrated domestic cats. Methods Convenience serum samples collected from sexually intact female and male cats (n = 67) undergoing elective sterilization surgery and archived sera from ovariectomized and castrated cats (n = 54) were tested for LH using a commercial diagnostic assay. Test results were compared with the known reproductive status of the cats. Additionally, sera from sexually intact (n = 54) and ovariectomized (n = 94) queens were collected at specific times of the year to evaluate possible seasonal effects on test results. Results Overall test sensitivity was 89.3% (95% confidence interval [CI] 82.3-94.2%), specificity was 92.6% (95% CI 87.1-96.2%) and accuracy was 91.1%. Analysis of results of female cats (n = 216) - sexually intact (n = 87) and ovariectomized (n = 129) - yielded a test sensitivity of 90.8% (95% CI 82.7-96.0%), a specificity of 92.3% (95% CI 86.2-96.2%) and accuracy of 91.7%. Analysis of the results of male cats (n = 53) - sexually intact (n = 19) and neutered (n = 34) - yielded test a sensitivity of 85.3% (95% CI 68.9-95.1%), a specificity of 94.7% (95% CI 74.0-99.9%) and accuracy of 88.7%. The sera of 10 intact queens unexpectedly yielded positive LH results; two of these cats were in estrus, based on visual inspection at the time of ovariohysterectomy. Test accuracy was 94.6% for those 148 samples collected at specific times of the year, with two samples each over three, 3 month periods yielding false-positive results. Conclusions and relevance The commercial point-of-care LH test is a useful adjunct to historical and physical examination findings for determination of reproductive status in domestic cats. Repeat testing 24 h later should be considered for those female cats with signs of estrus and initial positive test results.
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Affiliation(s)
| | - Brian A DiGangi
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
- Current address: ASPCA, New York, NY, USA
| | - Brenda Griffin
- Scott Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
- Current address: Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
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Hill JR, Wilkinson J, Mallyon J, Anderson ST. Low sensitivity of a test for anti-Mullerian hormone to assess presence of ovaries in prepubertal bitches. Aust Vet J 2018; 96:356-359. [DOI: 10.1111/avj.12735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 06/27/2018] [Accepted: 07/04/2018] [Indexed: 10/28/2022]
Affiliation(s)
- JR Hill
- School of Veterinary Science; University of Queensland; Gatton Campus 4343, Queensland Australia
| | - J Wilkinson
- School of Veterinary Science; University of Queensland; Gatton Campus 4343, Queensland Australia
| | - J Mallyon
- School of Veterinary Science; University of Queensland; Gatton Campus 4343, Queensland Australia
| | - ST Anderson
- School of Biomedical Science; University of Queensland; St Lucia, QLD Australia
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Cryopreservation of domestic cat (Felis catus) ovarian tissue: Comparison of two vitrification methods. Theriogenology 2018; 111:69-77. [DOI: 10.1016/j.theriogenology.2018.01.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 12/29/2017] [Accepted: 01/22/2018] [Indexed: 11/18/2022]
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Walter B, Coelfen A, Jäger K, Reese S, Meyer-Lindenberg A, Aupperle-Lellbach H. Anti-Muellerian hormone concentration in bitches with histopathologically diagnosed ovarian tumours and cysts. Reprod Domest Anim 2018; 53:784-792. [DOI: 10.1111/rda.13171] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 02/01/2018] [Indexed: 12/29/2022]
Affiliation(s)
- B Walter
- Faculty of Veterinary Medicine; Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine; Ludwig-Maximilians-University; Munich Germany
| | - A Coelfen
- Laboklin GmbH & Co.KG; Bad Kissingen Germany
| | - K Jäger
- Laboklin GmbH & Co.KG; Bad Kissingen Germany
| | - S Reese
- Faculty of Veterinary Medicine; Chair of Anatomy, Histology and Embryology; Department of Veterinary Sciences; Ludwig-Maximilians-University; Munich Germany
| | - A Meyer-Lindenberg
- Faculty of Veterinary Medicine; Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine; Ludwig-Maximilians-University; Munich Germany
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Brückner M. Laparoscopy for the treatment of ovarian remnant syndrome in four dogs and two cats. TIERAERZTLICHE PRAXIS AUSGABE KLEINTIERE HEIMTIERE 2017; 44:86-92. [DOI: 10.15654/tpk-150328] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 09/15/2015] [Indexed: 11/13/2022]
Abstract
Summary
Objective: To describe the clinical workup and laparoscopic treatment of ovarian remnant syndrome in dogs and cats. Material and methods: After confirming the diagnosis with some or all of the following tests – vaginoscopy with cytology, hormonal tests, and ultrasound – laparoscopic removal of the ovarian remnants was performed. A three-portal technique was used in the four dogs and a two-portal technique in the two cats. Results: All patients recovered well and were discharged the same day. No post-operative complications occurred in any patient. Conclusion and clinical relevance: Overall, in the hands of an experienced laparoscopic surgeon, laparoscopic removal of ovarian remnants appears to be a safe procedure in dogs and cats. In addition, laparoscopy offers the advantages of excellent visualization and a reduced morbidity for the patient. Careful case selection and complete pre-operative workup to rule out co-morbidities or underlying neoplasia are important. As with any laparoscopy the surgeon should always be prepared to convert to an open laparotomy if necessary.
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Alm H, Holst BS. Identifying ovarian tissue in the bitch using anti-Müllerian hormone (AMH) or luteinizing hormone (LH). Theriogenology 2017; 106:15-20. [PMID: 29028571 DOI: 10.1016/j.theriogenology.2017.09.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 09/19/2017] [Accepted: 09/19/2017] [Indexed: 12/29/2022]
Abstract
Reliable methods for determining whether or not a bitch has ovarian tissue present are needed for cases with unknown neutering status. Vaginal cytology consistent with heat is indicative of functional ovarian tissue. Other methods are required when the bitch is not presented in suspected heat. Progesterone can be analyzed during 2 months after suspected heat. During other stages, assays for the analyses of anti-Müllerian hormone (AMH) and luteinizing hormone (LH) have been used. The AMH assay is expected to give detectable concentrations (positive) in bitches with ovarian tissue, and the LH assay should give negative results in intact bitches, except during the pre-ovulatory LH peak. The aim of the present study was to study the diagnostic efficiency for detecting ovarian tissue in bitches using an AMH assay developed for human samples, and a semi-quantitative rapid immune migration (RIM™) LH assay developed for use in dogs. An AMH concentration of ≥0.1 μg/L, and an LH concentration of ≤1 μg/L, was set as the cut-off for presence of ovarian tissue. Client or staff owned bitches were included (N = 125). There were 73 intact bitches that were classified as being in heat (N = 25); in luteal phase (N = 12); or in anestrus (N = 36), and 52 spayed bitches that showed no clinical signs of estrogen influence. In total 64 of the 73 intact bitches (88%) were correctly identified using AMH, and 70/73 (96%) intact bitches were correctly identified using the LH assay. Excluding bitches in heat, the corresponding figures were 42/48 (88%) for AMH and 48/48 (100%) for LH. Of the 52 spayed bitches, 51 (98%) were correctly identified using the AMH assay and 49 (94%) were correctly identified using the LH assay. In this population, the predictive value of a positive AMH for intact bitches was 98%, and of a negative AMH for spayed bitches was 85%. Excluding bitches in heat, the predictive value of a negative LH test for intact bitches was 94%, and the predictive value of a positive LH test for identifying spayed bitches was 100%. It was concluded that analyses of AMH and LH are useful for detecting ovarian tissue in bitches, but that low concentrations of AMH may be obtained in intact bitches, classifying them as spayed. For LH, bitches in suspected estrus should not be tested to avoid the pre-ovulatory LH-surge, that otherwise may cause intact bitches being incorrectly identified as spayed.
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Affiliation(s)
- Helene Alm
- Tyresö Djurklinik, Öringevägen 1, SE-13549 Tyresö, Sweden; Anicura Regional Animal Hospital Bagarmossen, Ljusnevägen 17, 128 48 Bagarmossen, Sweden.
| | - Bodil S Holst
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Box 7054, SE-750 07 Uppsala, Sweden; Centre for Reproductive Biology in Uppsala (CRU), Box 7054, SE-750 07 Uppsala, Sweden.
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Songsasen N, Nagashima J, Thongkittidilok C. Endocrine and paracrine controls of canine follicular development and function. Reprod Domest Anim 2017; 52 Suppl 2:29-34. [DOI: 10.1111/rda.12858] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- N Songsasen
- Smithsonian Conservation Biology Institute; National Zoological Park; Front Royal VA USA
| | - J Nagashima
- Smithsonian Conservation Biology Institute; National Zoological Park; Front Royal VA USA
| | - C Thongkittidilok
- Smithsonian Conservation Biology Institute; National Zoological Park; Front Royal VA USA
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Snoeck F, Sarrazin S, Wydooghe E, Van Soom A. Age and anti-Müllerian hormone levels predict the success of in vitro maturation of cat oocytes. Reprod Domest Anim 2016; 52 Suppl 2:98-102. [DOI: 10.1111/rda.12827] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- F Snoeck
- Department of Reproduction, Obstetrics and Herd Health; Faculty of Veterinary Medicine; Ghent University; Merelbeke Belgium
| | - S Sarrazin
- Department of Reproduction, Obstetrics and Herd Health; Faculty of Veterinary Medicine; Ghent University; Merelbeke Belgium
| | - E Wydooghe
- Department of Reproduction, Obstetrics and Herd Health; Faculty of Veterinary Medicine; Ghent University; Merelbeke Belgium
| | - A Van Soom
- Department of Reproduction, Obstetrics and Herd Health; Faculty of Veterinary Medicine; Ghent University; Merelbeke Belgium
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Hollinshead FK, Walker C, Hanlon DW. Determination of the normal reference interval for anti-Müllerian hormone (AMH) in bitches and use of AMH as a potential predictor of litter size. Reprod Domest Anim 2016; 52 Suppl 2:35-40. [DOI: 10.1111/rda.12822] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- FK Hollinshead
- Glenbred; Matamata Veterinary Services Ltd; Matamata New Zealand
| | - C Walker
- New Zealand Veterinary Pathology Ltd; Hamilton New Zealand
| | - DW Hanlon
- Glenbred; Matamata Veterinary Services Ltd; Matamata New Zealand
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40
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Holst BS. Diagnostic possibilities from a serum sample-Clinical value of new methods within small animal reproduction, with focus on anti-Müllerian hormone. Reprod Domest Anim 2016; 52 Suppl 2:303-309. [DOI: 10.1111/rda.12856] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- BS Holst
- Department of Clinical Sciences; Swedish University of Agricultural Sciences; Uppsala Sweden
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41
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Claes ANJ, Ball BA. Biological Functions and Clinical Applications of Anti-Müllerian Hormone in Stallions and Mares. Vet Clin North Am Equine Pract 2016; 32:451-464. [PMID: 27726984 DOI: 10.1016/j.cveq.2016.07.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Anti-Müllerian hormone (AMH) plays a major role in sexual differentiation, Leydig cell differentiation, and folliculogenesis. In addition, AMH has clinical value in equine practice. In stallions, AMH can serve as an endocrine marker for equine cryptorchidism and as an immunohistochemical marker for Sertoli cell tumors. Considering that AMH is also an ovarian specific product, intact mares can be differentiated from ovariectomized mares. Peripheral AMH concentrations reflect the follicular population in mares, and therefore, are useful in the assessment of ovarian reserve and reproductive life-span of aged mares. Last, AMH is particularly suitable as a diagnostic marker for equine granulosa cell tumors.
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Affiliation(s)
- Anthony N J Claes
- Department of Equine Science, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 114, Utrecht 3584 CM, The Netherlands.
| | - Barry A Ball
- Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, 1400 Nicholasville Road, Lexington, KY, 40546-0099 USA
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Themmen AP, Kalra B, Visser JA, Kumar A, Savjani G, de Gier J, Jaques S. The use of anti-Müllerian hormone as diagnostic for gonadectomy status in dogs. Theriogenology 2016; 86:1467-1474. [DOI: 10.1016/j.theriogenology.2016.05.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 05/04/2016] [Accepted: 05/10/2016] [Indexed: 10/21/2022]
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Validation of a noninvasive diagnostic tool to verify neuter status in dogs: The urinary FSH to creatinine ratio. Theriogenology 2016; 86:1376-81. [PMID: 27242177 DOI: 10.1016/j.theriogenology.2016.04.081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 04/25/2016] [Accepted: 04/26/2016] [Indexed: 11/23/2022]
Abstract
Determining the presence of functional gonadal tissue in dogs can be challenging, especially in bitches during anestrus or not known to have been ovariectomized, or in male dogs with nonscrotal testes. Furthermore, in male dogs treated with deslorelin, a slow-release GnRH agonist implant for reversible chemical castration, the verification of complete downregulation of the hypothalamic-pituitary-gonadal (HPG) axis can be difficult, especially if pretreatment parameters such as the size of the testes or prostate gland are not available. The aims of this study were to validate an immunoradiometric assay for measurement of FSH in canine urine, to determine if the urinary FSH to creatinine ratio can be used to verify the neuter status in bitches and male dogs, as an alternative to the plasma FSH concentration, and to determine if downregulation of the HPG axis is achieved in male dogs during deslorelin treatment. Recovery of added canine FSH and serial dilutions of urine reported that the immunoradiometric assay measures urinary FSH concentration accurately and with high precision. Plasma FSH concentrations (the mean of two samples, taken 40 minutes apart) and the urinary FSH to creatinine ratio were determined before gonadectomy and 140 days (median, range 121-225 days) and 206 days (median, range 158-294 days) after gonadectomy of 13 bitches and five male dogs, respectively, and in 13 male dogs before and 132 days (median, range 117-174 days) after administration of a deslorelin implant. In both bitches and male dogs, the plasma FSH concentration and the urinary FSH to creatinine ratio were significantly higher after gonadectomy, with no overlapping of their ranges. Receiver operating characteristic analysis of the urinary FSH to creatinine ratio revealed a cut-off value of 2.9 in bitches and 6.5 in males to verify the presence or absence of functional gonadal tissue. In male dogs treated with deslorelin, the plasma FSH concentrations and urinary FSH to creatinine ratios were significantly lower after administration of the implant, but their ranges overlapped. We conclude that the urinary FSH to creatinine ratio can be used to verify the neuter status of bitches and male dogs. However, it cannot be used for the assessment of complete downregulation of the HPG axis after administration of a deslorelin implant. The urinary FSH to creatinine ratio is preferable over the plasma FSH concentration because it involves only one sample that can be collected relatively easy and noninvasively.
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Pir Yagci I, Pekcan M, Polat IM, Kalender H, Macun HC. Does serum anti-Müllerian hormone levels always discriminate presence of the ovaries in adult bitches? Comparison of two ELISA kits. Reprod Domest Anim 2016; 51:910-915. [DOI: 10.1111/rda.12757] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 07/13/2016] [Indexed: 11/25/2022]
Affiliation(s)
- I Pir Yagci
- Department of Obstetrics and Gynecology; Faculty of Veterinary Medicine; Kırıkkale University; Kırıkkale Turkey
| | - M Pekcan
- Department of Biochemistry; Faculty of Veterinary Medicine; Ankara University; Ankara Turkey
| | - IM Polat
- Department of Obstetrics and Gynecology; Faculty of Veterinary Medicine; Kırıkkale University; Kırıkkale Turkey
| | - H Kalender
- Department of Obstetrics and Gynecology; Faculty of Veterinary Medicine; Kırıkkale University; Kırıkkale Turkey
| | - HC Macun
- Department of Obstetrics and Gynecology; Faculty of Veterinary Medicine; Kırıkkale University; Kırıkkale Turkey
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45
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Nagashima JB, Hansen BS, Songsasen N, Travis AJ, Place NJ. Anti-Müllerian Hormone in the Domestic Dog during the Anestrus to Oestrous Transition. Reprod Domest Anim 2015; 51:158-64. [PMID: 26708613 DOI: 10.1111/rda.12660] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 11/25/2015] [Indexed: 11/26/2022]
Abstract
The reproductive cycle of the domestic dog features a long period of relative ovarian inactivity or anestrus. The mechanism of anestrous termination/oestrous resumption is not yet fully understood, which presents a challenge to the development of oestrous induction protocols. In this study, we assess the possibility that anti-Müllerian hormone (AMH) might play a role in this transition by characterizing its patterns of expression in the circulation during the transition from anestrus to oestrous and in all stages of ovarian follicular growth. Serum samples from five beagles (2.0-4.5 years) were collected three times per week at least 30 days prior to the onset of oestrous and assessed for AMH concentrations. Serum AMH concentration increased significantly during the transition from anestrus to proestrus and then declined back to the anestrous baseline beginning on day -4 before the luteinizing hormone surge, which was determined by changes in serum progesterone concentrations. Cortical sections of ovaries from females undergoing routine ovariohysterectomy (aged 8 months-5 years, n = 4) were evaluated for AMH by immunohistochemistry. Pre-antral and small antral follicles were most strongly immunoreactive for AMH. These data suggest that the increase in the number of antral follicles is associated with the rise in serum AMH as the anestrous period comes to an end. The rise in AMH might be useful in predicting the onset of oestrus and therefore assist with the optimization of oestrous induction protocols and possibly other assisted reproductive technologies.
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Affiliation(s)
- J B Nagashima
- Baker Institute for Animal Health, Cornell University, Ithaca, NY, USA
| | - B S Hansen
- Department of Population Medicine and Diagnostic Sciences, Cornell University, Ithaca, NY, USA
| | - N Songsasen
- Smithsonian Conservation Biology Institute, Front Royal, VA, USA
| | - A J Travis
- Baker Institute for Animal Health, Cornell University, Ithaca, NY, USA.,Atkinson Center for a Sustainable Future, Cornell University, Ithaca, NY, USA
| | - N J Place
- Department of Population Medicine and Diagnostic Sciences, Cornell University, Ithaca, NY, USA
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Holst BS, Dreimanis U. Anti-Müllerian hormone: a potentially useful biomarker for the diagnosis of canine Sertoli cell tumours. BMC Vet Res 2015. [PMID: 26209243 PMCID: PMC4514937 DOI: 10.1186/s12917-015-0487-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Background Testicular tumours are common in dogs and in many cases do not give rise to clinical signs. In other cases, signs of feminization, hyperpigmentation or alopecia may be observed, most commonly associated with Sertoli cell tumours (SCT). Although these signs are often associated with elevated concentrations of oestradiol, analysis of oestradiol may give inconclusive results due to large variations among individuals. Other biomarkers are therefore needed. Anti-Müllerian hormone (AMH) is expressed by the Sertoli cell. In humans, AMH has been shown to be a specific marker of Sertoli cell origin in gonadal tumours. Using immunohistochemistry, AMH has been shown to be a useful marker of immature and neoplastic Sertoli cells in dogs. The aim of the present study was to evaluate the clinical relevance of AMH analysis in peripheral blood in the diagnostic workup of dogs with suspected testicular tumours. Results Blood was collected from 20 dogs with a palpable testicular mass and from 27 healthy controls. Serum was analysed for oestradiol-17β using a RIA and for AMH using an ELISA. The Mann–Whitney U test was used to compare hormone concentrations between different groups. All control dogs had AMH concentrations ≤ 10 ng/mL, except one outlier that had a concentration of 43 ng/mL. Six dogs with SCT or mixed tumours containing SCT had AMH concentrations higher than 22 ng/mL, significantly higher than AMH concentrations in control dogs (P = 0.0004). Concentrations between 10 and 22 ng/mL were found in about half of the dogs with non-neoplastic testicular pathologies or with testicular tumours other than SCTs. Age did not significantly affect concentrations of AMH in the control dogs. Conclusion AMH was shown to be a promising biomarker for the diagnosis of Sertoli cell tumours in dogs.
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Affiliation(s)
- Bodil S Holst
- Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU), PO Box 7054, SE- 750 07, Uppsala, Sweden. .,Centre for Reproductive Biology in Uppsala, Swedish University of Agricultural Sciences (SLU), PO Box 7054, SE-750 07, Uppsala, Sweden.
| | - Ulrika Dreimanis
- Department of Small Animals, Helsingborg Referral Animal Hospital, SE-254 66, Helsingborg, Sweden.
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Anti-Müllerian hormone as a diagnostic tool for ovarian remnant syndrome in bitches. Vet Res Commun 2015; 39:159-62. [DOI: 10.1007/s11259-015-9639-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 06/07/2015] [Indexed: 10/23/2022]
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49
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Axnér E, Ström Holst B. Concentrations of anti-Müllerian hormone in the domestic cat. Relation with spay or neuter status and serum estradiol. Theriogenology 2014; 83:817-21. [PMID: 25499088 DOI: 10.1016/j.theriogenology.2014.11.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 11/12/2014] [Accepted: 11/16/2014] [Indexed: 10/24/2022]
Abstract
Female cats with unknown history can be diagnosed as spayed or intact with a GnRH-stimulation test or an LH test independent of the stage in the estrous cycle. However, although most females are correctly diagnosed with the LH test, the sensitivity and specificity are not 100%. The GnRH-stimulation test, although reliable, requires an injection of buserelin 2 hours before the blood sample is collected. Granulosa cells are the only cell type that produces anti-Müllerian hormone (AMH) in females, whereas Sertoli cells produce AMH in males. Anti-Müllerian hormone has been linked to spay status in dogs and cats and to ovarian and testicular pathology and fertility in different species. Our aim was to evaluate serum AMH concentrations in spayed female cats and in intact female cats of known age and reproductive stage (inactive ovaries or luteal phase). In addition, our aim was to compare serum AMH concentrations in intact and neutered male cats. We analyzed serum AMH concentrations in 15 spayed and 16 intact females and in 15 intact and 12 neutered male cats. Serum AMH was below the lowest standard point (<0.14 ng/mL) in all spayed females and neutered males, ranged between 1.3 and 19.0 ng/mL in the intact females and between 4.8 and 81.3 ng/mL in intact males. Thus, the AMH test had 100% sensitivity and specificity to diagnose the presence or absence of ovaries and testes in this study. In addition, in contrast to serum estradiol, serum AMH was not affected by buserelin stimulation (P = 0.459). Serum AMH was not correlated with serum estradiol before (rs = -0.188, P = 0.519) or after (rs = 0.335, P = 0.242) buserelin stimulation in the intact females. Four 6-month-old intact cats (two females and two males) had the highest AMH concentrations which in the females might represent a prepubertal peak previously described in other species and in males is likely due to high concentrations before puberty. In conclusion, we found that the AMH Gen II ELISA is reliable for diagnosing spay and neuter status of cats and that the domestic cat might be an interesting model for studies on AMH dynamics.
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Affiliation(s)
- E Axnér
- Division of Reproduction, Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Health, Swedish University of Agricultural Sciences, Uppsala, Sweden.
| | - B Ström Holst
- Division of Diagnostics and Large Animals, Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Woodland M, Pack L, Rist P, Crane B. COMPARISON OF DIGITAL RADIOGRAPHY, ULTRASONOGRAPHY, AND POSITIVE CONTRAST VAGINOURETHROGRAPHY FOR DETERMINING REPRODUCTIVE STATUS OF FEMALE CATS. Vet Radiol Ultrasound 2013; 55:368-73. [DOI: 10.1111/vru.12134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 10/20/2013] [Indexed: 11/30/2022] Open
Affiliation(s)
- Meghan Woodland
- Department of Companion Animals; Atlantic Veterinary College; University of Prince Edward Island; Charlottetown PE C1A 4P3 Canada
| | - LeeAnn Pack
- Department of Companion Animals; Atlantic Veterinary College; University of Prince Edward Island; Charlottetown PE C1A 4P3 Canada
| | - Paul Rist
- Department of Companion Animals; Atlantic Veterinary College; University of Prince Edward Island; Charlottetown PE C1A 4P3 Canada
| | - Bronwyn Crane
- Health Management; Atlantic Veterinary College; University of Prince Edward Island; Charlottetown PE C1A 4P3 Canada
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