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Hallberg I, Olsson H, Lau A, Wallander S, Snell A, Bergman D, Holst BS. Endocrine and dog factors associated with semen quality. Sci Rep 2024; 14:718. [PMID: 38184699 PMCID: PMC10771459 DOI: 10.1038/s41598-024-51242-0] [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: 10/31/2023] [Accepted: 01/02/2024] [Indexed: 01/08/2024] Open
Abstract
Knowledge of factors associated with semen quality may help in investigations of the aetiology and pathophysiology. We investigated the correlation between biomarkers for testicular cell function (anti-müllerian hormone, AMH, Inhibin B, testosterone, free androgen-index (testosterone/sex-hormone binding globulin), insulin like peptide 3, INSL-3), alkaline phosphate (ALP), canine prostate-specific esterase (CPSE), and heterophilic antibodies with dog variables, semen quality, and fertility. Blood and semen were collected from 65 Bernese Mountain Dogs. We evaluated total sperm count, motility and morphological parameters. The semen quality ranged from poor to excellent, with an average total sperm count of 1.1 × 109 and 50% morphologically normal spermatozoa (MNS). Age and abnormal testicular consistency correlated with decreased motility and MNS. Higher ALP correlated with higher total sperm count. AMH could not be detected in seminal plasma. AMH in blood correlated with head defects and high AMH concentration correlated with a severe decline in several semen parameters. Testosterone was negatively and CPSE positively correlated with age. No correlations were found for INSL-3, inhibin B, or heterophilic antibodies. Our findings contribute to the understanding of factors associated with semen quality in dogs, particularly related to Sertoli cell function.
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Affiliation(s)
- Ida Hallberg
- Department of Clinical Sciences, Division of Reproduction, The Centre for Reproductive Biology in Uppsala, Swedish University of Agricultural Sciences, 750 07, Uppsala, Sweden.
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, 750 07, Uppsala, Sweden.
| | - Hannah Olsson
- Department of Clinical Sciences, Division of Reproduction, The Centre for Reproductive Biology in Uppsala, Swedish University of Agricultural Sciences, 750 07, Uppsala, Sweden
| | - Angus Lau
- Department of Clinical Sciences, Division of Reproduction, The Centre for Reproductive Biology in Uppsala, Swedish University of Agricultural Sciences, 750 07, Uppsala, Sweden
| | - Stina Wallander
- Department of Clinical Sciences, Division of Reproduction, The Centre for Reproductive Biology in Uppsala, Swedish University of Agricultural Sciences, 750 07, Uppsala, Sweden
| | - Anna Snell
- Department of Clinical Sciences, Division of Reproduction, The Centre for Reproductive Biology in Uppsala, Swedish University of Agricultural Sciences, 750 07, Uppsala, Sweden
| | - Daniel Bergman
- Department of Clinical Sciences, Division of Reproduction, The Centre for Reproductive Biology in Uppsala, Swedish University of Agricultural Sciences, 750 07, Uppsala, Sweden
- Department of Laboratory Medicine, Karolinska Institute, 141 86, Stockholm, Sweden
| | - Bodil Ström Holst
- Department of Clinical Sciences, Division of Reproduction, The Centre for Reproductive Biology in Uppsala, Swedish University of Agricultural Sciences, 750 07, Uppsala, Sweden
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Hesser A, Darr C, Gonzales K, Power H, Scanlan T, Thompson J, Love C, Christensen B, Meyers S. Semen evaluation and fertility assessment in a purebred dog breeding facility. Theriogenology 2017; 87:115-123. [DOI: 10.1016/j.theriogenology.2016.08.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 07/21/2016] [Accepted: 08/09/2016] [Indexed: 11/30/2022]
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Schäfer-Somi S, Palme N. Seminal Plasma Characteristics and Expression of ATP-binding Cassette Transporter A1 (ABCA1) in Canine Spermatozoa from Ejaculates with Good and Bad Freezability. Reprod Domest Anim 2016; 51:232-9. [DOI: 10.1111/rda.12671] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 01/13/2016] [Indexed: 11/29/2022]
Affiliation(s)
- S Schäfer-Somi
- Platform for Artificial Insemination and Embryo Transfer; Vetmeduni Vienna; Vienna Austria
| | - N Palme
- Platform for Artificial Insemination and Embryo Transfer; Vetmeduni Vienna; Vienna Austria
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Hohšteter M, Artuković B, Severin K, Kurilj AG, Beck A, Šoštarić-Zuckermann IC, Grabarević Ž. Canine testicular tumors: two types of seminomas can be differentiated by immunohistochemistry. BMC Vet Res 2014; 10:169. [PMID: 25096628 PMCID: PMC4129470 DOI: 10.1186/s12917-014-0169-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 07/21/2014] [Indexed: 11/30/2022] Open
Abstract
Background Testicular tumors are the most common genital neoplasms in male dogs, with Leydig cell tumors (LCT), seminomas (SEM), and Sertoli cell tumors (SCT) the most common forms. Human SEM are classified as classical (CSEM) or spermatocytic (SSEM). Intratubular germ cell neoplasia of undifferentiated origin (IGCNU) is another form of human testicular tumor. The aim of this study was to verify that CSEM/SSEM classification is valid in dogs and confirm the existence of canine IGCNU. Results Testicular tumors were found in 46% of dogs at necropsy and accounted for 7% of tumors biopsied. The median age of dogs with tumors at necropsy was 10.16 years; median age at positive biopsy was 10.24 years. The most common tumors, in decreasing order, were LCT, mixed tumors, SEM and SCT at necropsy, and SEM, SCT, mixed tumors, LCT, peripheral nerve sheath tumor, and teratoma in the biopsy group. IGCNU was found in 3% of testicles at necropsy and in 3% of biopsy samples. Two dogs had testicular tumor metastasis. Expression of c-KIT was most common in SEM and seminomatous components of mixed tumors. PLAP was mostly expressed in IGCNU, SEM, teratoma, and some mixed tumors. Cytokeratin was mainly expressed in SCT. CD30 expression was low in both groups. Conclusions The high tumor incidence at necropsy can be attributed to older age. Tumor incidence in biopsy samples, dog age, and histological classification were consistent with previous studies. The higher incidence of SEM and SCT in the biopsy group probably resulted from the obvious clinical expression of these tumor types. The low incidence of metastasis confirmed the predominance of benign tumors. Low CD30 expression confirmed the low incidence of testicular embryonal carcinoma. Cytokeratin helps differentiate stromal tumors, especially SCT, from germ cell tumors. Histology and c-KIT and PLAP expression indicate that IGCNU exists in dogs. Expression of c-KIT and PLAP confirmed that CSEM and SSEM classification is valid in dogs.
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Javanbakht J, Pedram B, Taheriyan MR, Khadivar F, Hosseini SH, Abdi FS, Hosseini E, Moloudizargari M, Aghajanshakeri SH, Javaherypour S, Shafiee R, Emrani Bidi R. RETRACTED ARTICLE: Canine transmissible venereal tumor and seminoma: a cytohistopathology and chemotherapy study of tumors in the growth phase and during regression after chemotherapy. Tumour Biol 2014; 35:5493-500. [DOI: 10.1007/s13277-014-1723-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 02/03/2014] [Indexed: 11/30/2022] Open
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Sozmen M, Kabak YB, Gulbahar MY, Gacar A, Karayigit MO, Guvenc T, Yarim M. Immunohistochemical characterization of peroxisome proliferator-activated receptors in canine normal testis and testicular tumours. J Comp Pathol 2012; 149:10-8. [PMID: 23219070 DOI: 10.1016/j.jcpa.2012.09.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 09/05/2012] [Accepted: 09/25/2012] [Indexed: 11/19/2022]
Abstract
Peroxisome proliferator-activated receptors (PPARs) are ligand-activated transcription factors belonging to the nuclear hormone receptor superfamily. Recent studies have demonstrated that PPARs regulate lipid metabolism and are expressed in various cancers. The aim of the present study was to investigate the expression of PPAR-α, -β and -γ in normal canine testicular tissue and canine testicular tumours (CTTs). Expression of PPAR-α, -β and -γ was greater (P <0.05) than in normal testicular tissue. PPARs were therefore induced in CTTs and they may play a role in the biology of these tumours.
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Affiliation(s)
- M Sozmen
- Department of Pathology, Faculty of Veterinary Medicine, Ondokuz Mayis University, TR-55139 Samsun, Turkey.
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Marino G, Zanghì A. Activins and inhibins: expression and role in normal and pathological canine reproductive organs: a review. Anat Histol Embryol 2012; 42:1-8. [PMID: 22632402 DOI: 10.1111/j.1439-0264.2012.01161.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Accepted: 04/09/2012] [Indexed: 11/30/2022]
Abstract
Activins and inhibins are regulatory proteins of the reproductive function. Inhibins antagonise the activin signalling at different levels and are responsible for the negative feedback in the regulation of the release of pituitary follicle stimulating hormone (FSH), which, in turn, is promoted by locally produced activins. In the canine ovary, both peptides are expressed by developing follicles and corpora lutea. Activins may play a stimulatory role in follicular development, promoting the aromatase function; inhibins modulate these processes and suppress the hyperplasic/neoplastic stimuli. Activins are required for ovulation and corpus luteum formation, while inhibins stimulate progesterone synthesis. The exclusive production of alpha-inhibin by granulosa cells allows the peptide to be used as marker to identify canine ovarian stromal tumours by immunohistochemistry. In the male, activins are powerful morphogenetic factors in the foetal testis. In the adult, they display a modulating action on spermatogenesis and Sertoli cell function. Inhibins, produced mainly by Leydig cells, promote testosterone secretion. Canine testicular tumours, such as Leydig, Sertoli and granulosa cell tumours (GCTs), may express inhibin subunits and produce high circulating levels of these glycoproteins. In the canine prostate, activins inhibit epithelium proliferation, antagonising androgen effects, but they are synthesised under androgenic stimulus.
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Affiliation(s)
- G Marino
- Department of Veterinary Public Health, Messina 98168, Italy.
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Lucas X, Rodenas C, Cuello C, Gil MA, Parrilla I, Soler M, Belda E, Agut A. Unusual systemic metastases of malignant seminoma in a dog. Reprod Domest Anim 2011; 47:e59-61. [PMID: 22044725 DOI: 10.1111/j.1439-0531.2011.01927.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Unilateral enlargement of left testicle and scrotum was detected in an 8-year-old West Highland White Terrier. The histopathological diagnosis after surgery was a seminoma (SEM) tumour, and a diagnosis of metastatic foci was also detected in vaginal tunic and scrotum. Two months later, new metastatic SEM foci in the skin were diagnosed. Twenty-two months after the initial orchiectomy new multiple cutaneous nodules and a swelling of periesophageal structures were observed. Finally, the necropsy revealed multiple malignant metastatic SEM focus. To the author's knowledge, this is the first description of a canine SEM with unusual widespread metastasis on the base of tongue, soft palate, trachea and pericardium.
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Affiliation(s)
- X Lucas
- Animal Surgery and Medicine Department, Veterinary Hospital Teaching, University of Murcia, Espinardo, Murcia, Spain.
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Batista-Arteaga M, Suárez-Bonnet A, Santana M, Niño T, Reyes R, Alamo D. Testicular neoplasms (interstitial and Sertoli cell tumours) in a domestic ferret (Mustela putorius furo). Reprod Domest Anim 2010; 46:177-80. [PMID: 20088849 DOI: 10.1111/j.1439-0531.2009.01567.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Unilateral testicular enlargement was detected in a 5-years-old domestic ferret during a routine sterilization. The right testicle showed two different types of proliferative lesions: (i) round nodules, well demarcated, showing a soft yellow tissue; (ii) white nodules, firm, with irregular-shaped invaginations. Microscopically, the neoplastic proliferations were identified as an interstitial neoplasm and Sertoli cell tumour, respectively. The left testicle was small and showed intense testicular atrophy. Clinical evaluation of the ferret did not show any other apparent pathological processes. This study is the first case reporting the concomitant occurrence of a Sertoli cells tumour and an interstitial cell tumour in a domestic ferret.
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Affiliation(s)
- M Batista-Arteaga
- Unit of Reproduction and Obstetrics, Veterinary Faculty, University of Las Palmas de Gran Canaria, Las Palmas, Spain.
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Cytologic study of normal canine testis. Theriogenology 2010; 73:208-14. [DOI: 10.1016/j.theriogenology.2009.07.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2009] [Revised: 07/30/2009] [Accepted: 07/31/2009] [Indexed: 11/18/2022]
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Use of a gonadotropin releasing hormone agonist implant as an alternative for surgical castration in male ferrets (Mustela putorius furo). Theriogenology 2008; 70:161-7. [DOI: 10.1016/j.theriogenology.2008.03.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2007] [Revised: 03/05/2008] [Accepted: 03/09/2008] [Indexed: 11/23/2022]
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Rüttinger C, Bergmann M, Fink L, Pesch S, Seitz K, Trautmann A, Steger K, Konrad L, Brehm R. Expression of connexin 43 in normal canine testes and canine testicular tumors. Histochem Cell Biol 2008; 130:537-48. [PMID: 18542985 DOI: 10.1007/s00418-008-0432-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2008] [Indexed: 11/27/2022]
Abstract
In human testis, gap junctions containing connexin(Cx)43 are located within the seminiferous epithelium between Sertoli cells and between Sertoli and germ cells. Cx43 is known to play a role in the differentiation and proliferation of these cell types. It can further be associated with human seminoma development. The dog has been proposed as a model for studies of the male reproductive system, because of the frequent occurrence of testicular neoplasms. Thus, we investigated Cx43-mRNA and -protein expression in testes of normal prepubertal dogs, adult dogs, and in canine testicular tumors. Sertoli cells in prepubertal cords express Cx43 mRNA, but do synthesize only less Cx43 protein. Within the seminiferous tubules, Cx43 mRNA was detected in Sertoli cells, spermatogonia, and spermatocytes. Cx43 protein was mainly present in the basal compartment. In canine testicular tumors Cx43 mRNA was detectable in both seminoma and neoplastic Sertoli cells, whereas Cx43 protein was only found in neoplastic Sertoli cells. Our data indicate that Cx43 is regulated differentially in testicular tumors and that alterations of Cx43 expression may be involved in the pathogenesis of canine testicular malignancies. This study represents the first morphological work on the spatiotemporal expression pattern of Cx43 in normal and neoplastic canine testis.
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Affiliation(s)
- Christina Rüttinger
- Institute of Veterinary-Anatomy, -Histology and -Embryology, Justus-Liebig-University Giessen, Frankfurter Str. 98, 35392 Giessen, Germany
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Rijsselaere T, Maes D, Hoflack G, de Kruif A, Van Soom A. Effect of body weight, age and breeding history on canine sperm quality parameters measured by the Hamilton-Thorne analyser. Reprod Domest Anim 2007; 42:143-8. [PMID: 17348970 DOI: 10.1111/j.1439-0531.2006.00743.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
During the last decade, several computer assisted sperm analysis (CASA) systems have been validated for canine sperm quality assessment. Regarding the impressive possibilities of these systems, further research is required to determine which CASA measurements are of clinical importance in canine andrology. In the present study, the sperm quality parameters obtained by the Hamilton-Thorne Semen Analyser (Ceros 12.1; HTR) were correlated with the body weight and the age of the dogs. Moreover, the sperm quality parameters of dogs with a different breeding history were compared. The sperm-rich fraction was collected from 111 dogs of 50 different breeds, which were presented at our department. Immediately after collection, the concentration, the total sperm output (TSO) and 13 different sperm motility and velocity characteristics were measured by the HTR. The percentage of live spermatozoa and the spermatozoal morphology were examined on eosin/nigrosin stained smears. Based on their breeding history, the dogs were divided in three groups: 'fertile' (n = 60), 'subfertile' (n = 17) or 'not used for breeding' (n = 34). Significant (p < 0.05) correlations were established between the body weight of the dogs and the TSO (r = 0.245) and velocity curvilinear (VCL; r = -0.220), respectively. The age was negatively correlated with the percentage of normal spermatozoa (r = -0.203; p < 0.05). The correlations with all the other evaluated sperm parameters were low and not significant. Significant differences between the 'fertile' and the 'subfertile' group were found for all of the evaluated sperm quality parameters (except for BCF, LIN, STR and MEDIUM). In conclusion, dogs tend to produce ejaculates with a lower percentage of normal spermatozoa with increasing age and dogs with higher body weights produce ejaculates with a higher TSO and a lower VCL. Significantly poorer sperm characteristics were found for dogs with lower in vivo fertility results.
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Affiliation(s)
- T Rijsselaere
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
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Ortega-Pacheco A, Rodríguez-Buenfil JC, Segura-Correa JC, Bolio-Gonzalez ME, Jiménez-Coello M, Linde Forsberg C. Pathological Conditions of the Reproductive Organs of Male Stray Dogs in the Tropics: Prevalence, Risk Factors, Morphological Findings and Testosterone Concentrations. Reprod Domest Anim 2006; 41:429-37. [PMID: 16984349 DOI: 10.1111/j.1439-0531.2006.00688.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The objective of this study was to estimate the prevalence of and risk factors for pathological conditions of the reproductive organs in stray dogs under tropical conditions. Three hundred and eighteen dogs were examined post-mortem in the period from 1 July 2002 to 30 June 2003. Before killing, a blood sample (from the cephalic vein) for testosterone assay was taken. Pathological conditions of the reproductive organs were found in 135 of the dogs (42.5%) and in 175 of the testes (64.8%). The most frequent pathologies found were testicular degeneration, cryptorchidism, testicular hypoplasia and testicular tumours (in 15.1%, 6.6%, 6.6% and 5.4% of the dogs and 15.1, 4.6, 6.0 and 3.5 of the testes, respectively). Transmissible venereal tumour (TVT) was seen in 5.4% of the dogs. Testicular degeneration was more common in old dogs and underweight dogs (p < 0.05). Testicular tumours were 14.3 times more common in cryptorchid dogs. Age was another important factor for the development of testicular tumours (p < 0.05). Lower levels of testosterone concentration (p < 0.05) were observed in dogs with advanced testicular degeneration (0.7 +/- 0.8 nM), dogs with hypoplastic testicles (0.8 +/- 0.9 nM) and dogs with one degenerated and one retained testis or with bilateral cryptorchidism (1.2 +/- 0.9 nM) compared to dogs with one or two normal testes (7.0 +/- 5.5 nM). Testicular volume and weight were significantly lower in degenerated, hypoplastic and retained testes compared with the contralateral normal testis. Some spermatogenic activity was found in three of the retained testes, producing oligozoospermic smears with a high percentage of sperm abnormalities. No comparable epidemiological data about male pathological conditions of the reproductive organs in the dog is available. The prevalence found in this study, yet, appears high.
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Affiliation(s)
- A Ortega-Pacheco
- Faculty of Veterinary Medicine and Animal Science, Autonomous University of Yucatan, Yucatan, Mexico.
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Ferro VA, Khan MAH, McAdam D, Colston A, Aughey E, Mullen AB, Waterston MM, Harvey MJA. Efficacy of an anti-fertility vaccine based on mammalian gonadotrophin releasing hormone (GnRH-I)—a histological comparison in male animals. Vet Immunol Immunopathol 2004; 101:73-86. [PMID: 15261694 DOI: 10.1016/j.vetimm.2004.03.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2003] [Revised: 03/02/2004] [Accepted: 03/28/2004] [Indexed: 01/12/2023]
Abstract
A N-terminal modified gonadotrophin releasing hormone (GnRH-I, tetanus toxoid-CHWSYGLRPG-NH2) conjugate was evaluated histologically in a number of male animal species (mice, dogs and sheep). The immunogen has previously been shown to be highly effective in rats, by suppressing both steroidogenesis and spermatogenesis. However, cross-species efficacy of peptide vaccines is known to be highly variable. Therefore, a comparative evaluation of reproductive tissues from animals immunized against this immunogen adsorbed onto an alum-based adjuvant was made. The sheep and dogs were chosen, as use of anti-fertility vaccines in these species is important in farming and veterinary practice. Changes in testicular size were measured during the immunization period and the greatest alteration (attributed to gonadal atrophy) was observed in the rat. Following euthanasia, the testicular tissue was evaluated for spermatogenesis. The most susceptible species to GnRH-I ablation was the rat, which showed significant (P < 0.0001) arrest in spermatogenesis compared with untreated controls. Testicular sections taken from treated animals were completely devoid of spermatozoa or spermatids, in comparison with 94% of the untreated controls showing evidence of spermatogenesis. The immunized mice and rams also showed significant arrest (P < 0.0001). There was a 30-45% decrease in spermatogenesis and total azoospermia was not apparent. However, the least responsive were the dogs, which showed little significant variation compared to untreated animals and only a 5% decrease in activity. A comparison of the specific IgG response to GnRH-I indicated that in sheep and dogs the response was not maintained, unlike in rodents, suggesting that suppression of fertility may be due to differences in immune responses in different animal species.
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Affiliation(s)
- V A Ferro
- Department of Immunology, University of Strathclyde, SIBS Building, 27 Taylor Street, Glasgow G4 0NR, Scotland, UK.
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Balciute J, Aniuliene A, Vaitkus V, Januškevičienė G. Occurrence of Testicular Tumours in Dogs. BIOTECHNOL BIOTEC EQ 2004. [DOI: 10.1080/13102818.2004.10819242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Abstract
The actual incidence of reproductive tract tumors is difficult to ascertain, presumably because a significant percentage of dogs and cats are neutered, particularly in the United States. Data from European countries, where elective neutering is less common, provides insights. Several studies document the relative frequency of reproductive tumors. Larger studies of the more common tumors, e.g., testicular tumors, provide a substantial amount of information on the clinical presentation and response to treatment of dogs, but overall there is less information available on cats. Numerous case reports document the less commonly reported tumors and will be included in the following discussion.
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Affiliation(s)
- Margaret C McEntee
- Department of Clinical Sciences, Box # 31, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
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