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Ruiz TFR, Vilamaior PSL, Grigio V, Colleta SJ, Zucão MI, de Campos SGP, Dos Santos FCA, Biancardi MF, Perez APS, Taboga SR, Leonel ECR. The Mongolian Gerbil as a Useful Experimental Model in Reproductive Biology. Reprod Sci 2023; 30:2092-2106. [PMID: 36696041 DOI: 10.1007/s43032-023-01171-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 01/13/2023] [Indexed: 01/26/2023]
Abstract
Ultimately, the Mongolian gerbils (Meriones unguiculatus) have acquired a relevant role in biological and biomedical experiments alongside other rodents. The use of gerbils in research has been mainly oriented to physiological and pharmacological studies, with special attention to nervous, digestive, and auditory systems as well as microbiology and parasitology. Ultimately, gerbils have also been applied for studying carcinogenesis in different organs and systems, since these animals show a natural propensity to develop spontaneous proliferative lesions, especially in steroid-responsive organs. This characteristic shed light on the reproductive aspects of this rodent model regarding morphological features in male and female individuals. This review of literature summarizes the significance of this model as an alternative to the use of inbred mice and rats in reproductive experimental research, highlighting recent findings. Gerbils have contributed to the expansion of knowledge in prostate biology in male and female individuals, providing studies related to prostatic morphogenesis and neoplasia. In the testes, spermiogenesis occurs in 15 steps, differently from other experimental models. Also, the complete maturation of the testis-epididymal complex occurs between the second and third months. Mammary gland alterations related to the estrous cycle and pregnancy were described, as well as its modulation under endogenous and exogenous estrogenic compounds. The ovaries frequently present ovarian cysts. Furthermore, this organ shows predominantly interstitial steroidogenic glands in the stroma, especially at aging. Adrenal gland shows a large size compared to other animals, presenting three distinct zones with a remarkable role in steroidogenesis.
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Affiliation(s)
- Thalles Fernando Rocha Ruiz
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
- Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Patricia Simone Leite Vilamaior
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Vitor Grigio
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Simone Jacovaci Colleta
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Mariele Ilario Zucão
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Silvana Gisele Pegorin de Campos
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Fernanda Cristina Alcântara Dos Santos
- Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Avenida Esperança, S/N, Câmpus Samambaia, Goiânia, Goiás, 74690-900, Brazil
| | - Manoel Francisco Biancardi
- Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Avenida Esperança, S/N, Câmpus Samambaia, Goiânia, Goiás, 74690-900, Brazil
| | - Ana Paula Silva Perez
- Academic Unit of Health Sciences, Medicine Course, Federal University of Jataí, BR 36, Km 195, Jataí, Goiás, 75801-615, Brazil
| | - Sebastião Roberto Taboga
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University, Rua Cristóvão Colombo, 2265 Jardim Nazareth, São José Do Rio Preto, SP, 15054-000, Brazil
| | - Ellen Cristina Rivas Leonel
- Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Avenida Esperança, S/N, Câmpus Samambaia, Goiânia, Goiás, 74690-900, Brazil.
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Campos SGP, Gonçalves BF, Ruiz TFR, Leonel ECR, Ribeiro DL, Falleiros Junior LR, Goes RM, Taboga SR. Proteoglycans orchestrate remodeling of prostatic cytoarchitecture after androgenic blockade in old gerbils. Prostate 2023; 83:179-189. [PMID: 36262059 DOI: 10.1002/pros.24451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 06/06/2022] [Accepted: 06/20/2022] [Indexed: 11/05/2022]
Abstract
BACKGROUND The aim of this study was to evaluate modifications in proteoglycan morphology and composition in the prostatic stroma of 18-month-old gerbils after surgical castration, in association or not with an androgenic blockade. METHODS The animals (n = 5) were sorted into groups subjected or not to antiandrogen treatment (flutamide 10 mg/kg/day) administered for the total postsurgery period and euthanized at 7- or 30-day postcastration; the control group consisted of intact animals. Tissue analysis included immunohistochemical assessment (perlecan and chondroitin sulfate) and proteoglycan morphology was analyzed by transmission electron microscopy. RESULTS Chondroitin sulfate frequency was increased 7 days postcastration with an androgenic blockade. The presence of these carbohydrates was rare after 30 days of androgenic blockade treatment. There was a significant increase in the amount of perlecan in the prostate stroma from groups subjected to castration plus flutamide for 7 or 30 days. Ultrastructural analysis showed that the incidence of areas occupied by proteoglycans and basement membrane was altered by treatment. In addition, androgenic blockade results in changes in the amount, thickness, and morphology of these structures. At 30 days postcastration, with or without flutamide treatment, larger proteoglycans were common. CONCLUSIONS In this study, in particular, the decrease in chondroitin sulfate after the longer period might be understood as a prostatic response to androgenic deprivation, while the high frequency and permanence of perlecan led to the assumption that its modulation could be androgen-independent. Length and form alterations in proteoglycans as well as associations among them and with the basement membrane were dynamic events in the prostate microenvironment.
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Affiliation(s)
- Silvana G P Campos
- Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto, São Paulo, Brazil
| | - Bianca F Gonçalves
- Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto, São Paulo, Brazil
| | - Thalles Fernando Rocha Ruiz
- Department of Structural and Functional Biology, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Ellen Cristina R Leonel
- Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás (UFG), Goiânia, Goiás, Brazil
| | - Daniele L Ribeiro
- Department of Cell Biology, Histology and Embriology, Institute of Biomedical Sciences-ICBIM, Federal University of Uberlândia (UFU), Uberlândia, Minas Gerais, Brazil
| | | | - Rejane M Goes
- Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto, São Paulo, Brazil
| | - Sebastião R Taboga
- Department of Biological Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto, São Paulo, Brazil
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Guerra LHA, Tamarindo GH, de Campos SGP, Taboga SR, Vilamaior PSL. Do mineral and corn oil serve as potential endocrine disruptors in the gerbil prostate? Reprod Toxicol 2019; 90:141-149. [DOI: 10.1016/j.reprotox.2019.09.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 09/18/2019] [Accepted: 09/26/2019] [Indexed: 02/07/2023]
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Methyl jasmonate reduces testosterone-induced benign prostatic hyperplasia through regulation of inflammatory and apoptotic processes in rats. Biomed Pharmacother 2017; 95:1493-1503. [DOI: 10.1016/j.biopha.2017.08.106] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/15/2017] [Accepted: 08/23/2017] [Indexed: 01/18/2023] Open
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Gonçalves BF, de Campos SGP, Góes RM, Scarano WR, Taboga SR, Vilamaior PSL. Dual action of high estradiol doses on MNU-induced prostate neoplasms in a rodent model with high serum testosterone: Protective effect and emergence of unstable epithelial microenvironment. Prostate 2017; 77:970-983. [PMID: 28401578 DOI: 10.1002/pros.23353] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 03/14/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Estrogens are critical players in prostate growth and disease. Estrogen therapy has been the standard treatment for advanced prostate cancer for several decades; however, it has currently been replaced by alternative anti-androgenic therapies. Additionally, studies of its action on prostate biology, resulting from an association between carcinogens and estrogen, at different stages of life are scarce or inconclusive about its protective and beneficial role on induced-carcinogenesis. Thus, the aim of this study was to determine whether estradiol exerts a protective and/or stimulatory role on N-methyl-N-nitrosurea-induced prostate neoplasms. METHODS We adopted a rodent model that has been used to study induced-prostate carcinogenesis: the Mongolian gerbil. We investigated the occurrence of neoplasms, karyometric patterns, androgen and estrogen receptors, basal cells, and global methylation status in ventral and dorsolateral prostate tissues. RESULTS Histopathological analysis showed that estrogen was able to slow tumor growth in both lobes after prolonged treatment. However, a true neoplastic regression was observed only in the dorsolateral prostate. In addition to the protective effects against neoplastic progression, estrogen treatment resulted in an epithelium that exhibited features distinctive from a normal prostate, including increased androgen-insensitive basal cells, high androgens and estrogen receptor positivity, and changes in DNA methylation patterns. CONCLUSIONS Estrogen was able to slow tumor growth, but the epithelium exhibited features distinct from a normal prostatic epithelium, and this unstable microenvironment could trigger lesion recurrence over time.
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Affiliation(s)
- Bianca F Gonçalves
- Department of Cell Biology-Institute of Biology, State University of Campinas-UNICAMP, Campinas, São Paulo, Brazil
| | - Silvana G P de Campos
- Department of Biology, Laboratory of Microscopy and Microanalysis, Institute of Biosciences, Humanities and Exact Sciences-IBILCE, UNESP-Sao Paulo State University, Sao Jose do Rio Preto, São Paulo, Brazil
| | - Rejane M Góes
- Department of Biology, Laboratory of Microscopy and Microanalysis, Institute of Biosciences, Humanities and Exact Sciences-IBILCE, UNESP-Sao Paulo State University, Sao Jose do Rio Preto, São Paulo, Brazil
| | - Wellerson R Scarano
- Department of Morphology, Institute of Biosciences, UNESP-São Paulo State University, Botucatu, São Paulo, Brazil
| | - Sebastião R Taboga
- Department of Biology, Laboratory of Microscopy and Microanalysis, Institute of Biosciences, Humanities and Exact Sciences-IBILCE, UNESP-Sao Paulo State University, Sao Jose do Rio Preto, São Paulo, Brazil
| | - Patricia S L Vilamaior
- Department of Biology, Laboratory of Microscopy and Microanalysis, Institute of Biosciences, Humanities and Exact Sciences-IBILCE, UNESP-Sao Paulo State University, Sao Jose do Rio Preto, São Paulo, Brazil
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Kim SK, Seok H, Park HJ, Jeon HS, Kang SW, Lee BC, Yi J, Song SY, Lee SH, Kim YO, Chung JH. Inhibitory effect of curcumin on testosterone induced benign prostatic hyperplasia rat model. Altern Ther Health Med 2015; 15:380. [PMID: 26490686 PMCID: PMC4618860 DOI: 10.1186/s12906-015-0825-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 08/25/2015] [Indexed: 01/20/2023]
Abstract
Background Benign prostatic hyperplasia (BPH) is one of the common male diseases, which is provoked by dihydrotestosterone (DHT) and androgen signals. Several studies showed that curcumin has various effects of prevention and treatment to diseases. We investigated whether curcumin may repress the development of BPH in male Wistar rats. Methods Seven weeks male Wistar rats were and divided into 4 groups (normal group, BPH group, finasteride group, curcumin group; n = 8 for each group). In order to induce BPH in rats, rats were castrated and testosterone was injected subcutaneously everyday (s.c., 20 mg/kg). Rats in the curcumin group were treated 50 mg/kg, administered orally for 4 weeks. After 4 weeks, all rats were sacrificed and their prostate and serum were analyzed. Results Compared to the finasteride group as positive group, the curcumin group showed similarly protective effect on BPH in histopathologic morphology, prostate volume. Results of immunohistochemistry and western-blot showed decreased expressions of VEGF, TGF-ß1, and IGF1 were also decreased in the curcumin group. Conclusions These results suggested that curcumin inhibited the development of BPH and might a useful herbal treatment or functional food for BPH.
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Gonçalves BF, Campos SGPD, Costa CF, Scarano WR, Góes RM, Taboga SR. Key participants of the tumor microenvironment of the prostate: an approach of the structural dynamic of cellular elements and extracellular matrix components during epithelial-stromal transition. Acta Histochem 2015; 117:4-13. [PMID: 25466989 DOI: 10.1016/j.acthis.2014.10.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 10/23/2014] [Accepted: 10/24/2014] [Indexed: 01/03/2023]
Abstract
Cancer is a multistep process that begins with the transformation of normal epithelial cells and continues with tumor growth, stromal invasion and metastasis. The remodeling of the peritumoral environment is decisive for the onset of tumor invasiveness. This event is dependent on epithelial-stromal interactions, degradation of extracellular matrix components and reorganization of fibrillar components. Our research group has studied in a new proposed rodent model the participation of cellular and molecular components in the prostate microenvironment that contributes to cancer progression. Our group adopted the gerbil Meriones unguiculatus as an alternative experimental model for prostate cancer study. This model has presented significant responses to hormonal treatments and to development of spontaneous and induced neoplasias. The data obtained indicate reorganization of type I collagen fibers and reticular fibers, synthesis of new components such as tenascin and proteoglycans, degradation of basement membrane components and elastic fibers and increased expression of metalloproteinases. Fibroblasts that border the region, apparently participate in the stromal reaction. The roles of each of these events, as well as some signaling molecules, participants of neoplastic progression and factors that promote genetic reprogramming during epithelial-stromal transition are also discussed.
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Zanatelli M, Silva DAL, Shinohara FZ, Góes RM, Santos FCA, Vilamaior PSL, Taboga SR. Actions of oestradiol and progesterone on the prostate in female gerbils: reversal of the histological effects of castration. Reprod Fertil Dev 2014; 26:540-50. [PMID: 23677028 DOI: 10.1071/rd12302] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Accepted: 03/18/2013] [Indexed: 11/23/2022] Open
Abstract
The female prostate is a functionally active gland in several mammalian species, including humans and rodents. Investigations of prostate morphophysiology during the phases of the oestrous cycle have shown that the female prostate is influenced by fluctuations in serum concentrations of oestradiol (E2) and progesterone (P4). The aim of the present study was to evaluate the effect of combined prolonged administration of E2 and P4 on the prostate in ovariectomised female gerbils. Ovariectomy caused atrophy and decreased glandular secretory activity. Administration of E2 and P4 (0.1mgkg(-1) diluted in 0.1mL of mineral oil, every 48h over 30 days) resulted in a recovery of overall prostate structure, as evidenced by increased epithelial height, mass and prostatic secretory activity, without leading the appearance of significant lesions. Evaluation of androgen receptor (AR) expression revealed increased immunoreactivity in the E2+P4-treated group. Immunostaining for oestrogen receptor (ER) α was decreased in the castrated groups, but increased in the group subjected to hormone treatment. There were no significant differences in ERβ immunoreactivity among the groups. Assessment of cell proliferation revealed greater immunoreactivity in the treated group. Together, the results indicate that the interaction between E2 and P4 may be responsible for maintaining female prostate gland histophysiology.
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Affiliation(s)
- Marianna Zanatelli
- Department of Cell Biology, Institute of Biology, State University of Campinas, R. Monteiro Lobato 255, 13083-970, Campinas, São Paulo, Brazil
| | - Diego A L Silva
- Department of Cell Biology, Institute of Biology, State University of Campinas, R. Monteiro Lobato 255, 13083-970, Campinas, São Paulo, Brazil
| | - Filipe Z Shinohara
- Department of Cell Biology, Institute of Biology, State University of Campinas, R. Monteiro Lobato 255, 13083-970, Campinas, São Paulo, Brazil
| | - Rejane M Góes
- Laboratory of Microscopy and Microanalysis, Department of Biology, São Paulo State University, R Cristovão Colombo, 2265, 15054-000, São José do Rio Preto, São Paulo, Brazil
| | - Fernanda C A Santos
- Department of Morphology, Institute of Biological Sciences, Federal University of Goiás, CP 131, 74001-970, Goiânia, Goiás, Brazil
| | - Patricia S L Vilamaior
- Laboratory of Microscopy and Microanalysis, Department of Biology, São Paulo State University, R Cristovão Colombo, 2265, 15054-000, São José do Rio Preto, São Paulo, Brazil
| | - Sebastião R Taboga
- Laboratory of Microscopy and Microanalysis, Department of Biology, São Paulo State University, R Cristovão Colombo, 2265, 15054-000, São José do Rio Preto, São Paulo, Brazil
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Gonçalves BF, de Campos SGP, Zanetoni C, Scarano WR, Falleiros LR, Amorim RL, Góes RM, Taboga SR. A new proposed rodent model of chemically induced prostate carcinogenesis: distinct time-course prostate cancer progression in the dorsolateral and ventral lobes. Prostate 2013; 73:1202-13. [PMID: 23620436 DOI: 10.1002/pros.22669] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Accepted: 03/04/2013] [Indexed: 01/08/2023]
Abstract
BACKGROUND Characterization of novel rodent models for prostate cancer studies requires evaluation of either spontaneous and carcinogen-induced tumors as well as tumor incidence in different prostatic lobes. We propose a new short-term rodent model of chemically induced prostate carcinogenesis in which prostate cancer progression occurs differentially in the dorsolateral and ventral lobes. METHODS Adult gerbils were treated with MNU alone or associated with testosterone for 3 or 6 months of treatment. Tumor incidence, latency, localization, and immunohistochemistry (AR, PCNA, smooth muscle α-actin, p63, MGMT, and E-cadherin) were studied in both lobes. RESULTS Comparisons between both lobes revealed that lesions developed first in the DL while the VL presented longer tumor latency. However, after 6 months, there was a dramatic increase in tumor multiplicity in the VL, mainly in MNU-treated groups. Lesions clearly progressed from a premalignant to a malignant phenotype over time and tumor latency was decreased by MNU + testosterone administration. Three-dimensional reconstruction of the prostatic complex showed that the DL developed tumors exclusively in the periurethral area and showed intense AR, PCNA, and MGMT immunostaining. Moreover, VL lesions emerged throughout the entire lobe. MNU-induced lesions presented markers indicative of an aggressive phenotype: lack of basal cells, rupture of the smooth muscle cell layer, loss of E-cadherin, and high MGMT staining. CONCLUSIONS There are distinct pathways involved in tumor progression in gerbil prostate lobes. This animal provides a good model for prostate cancer since it allows the investigation of advanced steps of carcinogenesis with shorter latency periods in both lobes.
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Affiliation(s)
- Bianca F Gonçalves
- Department of Cell Biology, Institute of Biology, State University of Campinas UNICAMP, Campinas, Brazil
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Corradi LS, Jesus MM, Fochi RA, Vilamaior PSL, Justulin LA, Góes RM, Felisbino SL, Taboga SR. Structural and ultrastructural evidence for telocytes in prostate stroma. J Cell Mol Med 2013; 17:398-406. [PMID: 23388038 PMCID: PMC3823021 DOI: 10.1111/jcmm.12021] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 12/28/2012] [Indexed: 12/24/2022] Open
Abstract
The prostate comprises a glandular epithelium embedded within a fibromuscular stroma. The stroma is a complex arrangement of cells and extracellular matrix (ECM) components in addition to growth factors, regulatory molecules, remodelling enzymes, blood vessels, nerves and immune cells. The principal sources of ECM components are fibroblasts and smooth muscle cells (SMC), which synthesize the structural and regulatory components of the ECM. Telocytes (TCs) were recently described as a novel stromal cell type that exhibited characteristic features. The aim of this study was to confirm the presence of TCs in prostate stromal tissue of gerbils, as the stromal compartment of this gland is a dynamic microenvironment. We used transmission electron microscopy (TEM), light microscopy and immunohistochemistry methods to provide morphological evidence for the presence of TCs. Cells that resembled TCs were observed in gerbil prostatic stroma. These cells had small cellular bodies with very thin and extremely long cellular processes. They were found primarily in the subepithelial area and also at the periphery of SMC layers. TCs also exhibited moniliform processes, caveolae and nuclei surrounded by small amounts of cytoplasm. Close contacts between TC podomers were evident, particularly in the adjacent epithelial compartment. This morphological evidence supported the presence of TCs in the gerbil prostatic stroma, which we report for the first time.
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Affiliation(s)
- Lara S Corradi
- Department of Biology, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), Univ. Estadual Paulista - UNESP, São José do Rio Preto, São Paulo, Brazil
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Vidigal DJA, Silva ALD, Vidigal FEC. O impacto na expressão agnors e apoptose na próstata do hamster-mesocricetus auratus (HMA) submetido à aplicação de finasterida. Rev Col Bras Cir 2011. [DOI: 10.1590/s0100-69912011000500009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJETIVO: Avaliar o impacto na expressão AgNORs e apoptose na próstata do hamster-Mesocricetus auratus (hMa) submetido à aplicação de finasterida. MÉTODOS: Vinte roedores da espécie hMa (n=20), machos foram separados aleatoriamente em grupos de dez animais: grupo-Finasterida (n=10) e grupo-Controle (n=10). No grupo-finasterida foi administrado 7,14 ng/mL de finasterida, subcutâneo (SC), no dorso, três vezes por semana, por 90 dias. Foi avaliada a expressão AgNORs como marcador de proliferação celular e a apoptose como marcador de morte celular. RESULTADOS: A expressão de AgNORs foi menor no grupo-finasterida, 2,846±0,877 versus 3,68 ±1,07 grumos argilófilos por micrômetro ao quadrado (µm²) no grupo-controle, p= < 0,0001. A apoptose foi mais frequente no grupo-finasterida, 53,62±1,389 versus 14,76 ± 2,137 µm² no grupo-controle, p= 0,0408. CONCLUSÃO: Observou-se diminuição da expressão de AgNORs e promoção da apoptose na próstata dos roedores em estudo, que foram submetidos à aplicação de finasterida.
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Campos SG, Gonçalves BF, Scarano WR, Ribeiro DL, Góes RM, Taboga SR. Prostatic stromal cells of old gerbils respond to steroidal blockades creating a microenvironment similar to reactive stroma. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.biomag.2011.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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