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de Araújo Júnior HN, Lopes IRG, de Sousa ACFC, de Oliveira GB, de Oliveira REM, Tertulino MD, Rocha ELB, Firmino PR, Pereira AF, de Oliveira MF. Prenatal post-implantation development of collared peccaries (Pecari tajacu Linnaeus, 1758). Anat Histol Embryol 2024; 53:e13035. [PMID: 38529660 DOI: 10.1111/ahe.13035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 10/26/2023] [Accepted: 03/07/2024] [Indexed: 03/27/2024]
Abstract
Given the importance of information on intrauterine development in diagnosing anomalies in the gestational development of the species for the development of assisted reproduction technologies as well as understanding the autonomy and responsiveness of the newborn, the aim of the present study was to describe the external morphology of collared peccary conceptuses. For this study, two conceptuses were used per gestational age of 25-120 days post-copulation (dpc) and neonates with 145 dpc, totalling 22 animals. Females were euthanised, and embryos/foetuses were examined, measured, and photographed. During the first third of the gestational period (25-50 dpc, n = 8), a marked body curvature, brain vesicles, somites, internal organs, placid lens, auricular protrusion and limb buds are noted. In the second third of the gestational period (51-100 dpc, n = 10), foetuses lose their body curvature, displaying greater anatomical definition, including skeletal, external ears, nostrils, eyelids and tactile hair formation and cranial suture closure. In addition, dorsal scent gland and genital tubercle differentiation were visualized at 50 days post-copulation. In the third of the gestational period (101-145 dpc, n = 4), the organs become completely formed, alongside skin darkening, eyelid opening, dental eruption, dorsal odorous gland development, sexual organ externalization, and fanero attachment development. These data allowed for the construction of a prenatal growth curve, providing comparative anatomy information for ungulates and further contributing towards rational reproductive management and reproductive biotechnologies for this species.
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Melo LIDS, Matias de Oliveira RE, Freitas Caetano de Sousa AC, de Oliveira RM, Lima MA, Fragoso ABL, Silva FJDL, Attademo FLN, Luna FDO, Pereira AF, de Oliveira MF. Antillean manatee (Trichechus manatus manatus Linnaeus, 1758) Tongue Morphology and Adaptive Herbivorous Implications. Microsc Microanal 2024; 30:160-168. [PMID: 38123367 DOI: 10.1093/micmic/ozad135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 10/31/2023] [Accepted: 11/24/2023] [Indexed: 12/23/2023]
Abstract
Morphological study of the tongue is an interesting way of understanding evolutionary processes associated with feeding habits. Therefore, the aim of the present study was to describe the tongue morphology of the Antillean manatee and to understand possible morphological relationships with its way of capturing food. Macroscopic dissections and light and scanning electron microscopy analyses of seven manatee tongues were performed. The tongue in Antillean manatees is a muscular and robust organ, divided into apex, body, and root. It is firmly adhered to the floor of the oral cavity. Lingual papillae were distributed over the entire tongue surface. They were identified as filiform papillae concentrated in the apex. Fungiform papillae were present on the apex and lateral regions. Foliate papillae were located on the dorsolateral portion of the root. Lentiform papillae were located across the dorsal tongue surface. The mucosa was lined by a keratinized stratified squamous epithelium presenting compound tubuloacinar glands and taste buds in the foliate papillae. The tongue of the Antillean manatee is similar to other Sirenia species, both of which share a completely herbivorous diet.
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Affiliation(s)
- Lucas Inácio Dos Santos Melo
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
- National Center for Research and Conservation of Aquatic Mammals by Chico Mendes Institute for Biodiversity Conservation (CMA/ICMBio), Alexandre Herculano, 197, bairro Gonzaga, Santos, São Paulo, 11050-031, Brazil
| | - Radan Elvis Matias de Oliveira
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
- Center for Environmental Studies and Monitoring (CEMAM), Rua Jorge Caminha, 118, bairro Centro, Areia Branca, Rio Grande do Norte, 59655-000, Brazil
- Cetáceos da Costa Branca Project, University of the State of Rio Grande do Norte (PCCB-UERN), Almino Afonso, 478, Mossoró, Rio Grande do Norte, 59610-210, Brazil
| | - Ana Caroline Freitas Caetano de Sousa
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
| | - Rysónely Maclay de Oliveira
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
- Cetáceos da Costa Branca Project, University of the State of Rio Grande do Norte (PCCB-UERN), Almino Afonso, 478, Mossoró, Rio Grande do Norte, 59610-210, Brazil
| | - Mariana Almeida Lima
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
- Center for Environmental Studies and Monitoring (CEMAM), Rua Jorge Caminha, 118, bairro Centro, Areia Branca, Rio Grande do Norte, 59655-000, Brazil
- Cetáceos da Costa Branca Project, University of the State of Rio Grande do Norte (PCCB-UERN), Almino Afonso, 478, Mossoró, Rio Grande do Norte, 59610-210, Brazil
| | - Ana Bernadete Lima Fragoso
- Center for Environmental Studies and Monitoring (CEMAM), Rua Jorge Caminha, 118, bairro Centro, Areia Branca, Rio Grande do Norte, 59655-000, Brazil
- Cetáceos da Costa Branca Project, University of the State of Rio Grande do Norte (PCCB-UERN), Almino Afonso, 478, Mossoró, Rio Grande do Norte, 59610-210, Brazil
| | - Flávio José de Lima Silva
- Center for Environmental Studies and Monitoring (CEMAM), Rua Jorge Caminha, 118, bairro Centro, Areia Branca, Rio Grande do Norte, 59655-000, Brazil
- Cetáceos da Costa Branca Project, University of the State of Rio Grande do Norte (PCCB-UERN), Almino Afonso, 478, Mossoró, Rio Grande do Norte, 59610-210, Brazil
- Doctoral Program in Development and Environment (PRODEMA), Federal University of Rio Grande do Norte (UFRN), Avenida Salgado Filho, 3000, bairro Lagoa Nova, Natal, Rio Grande do Norte, 59064-741, Brazil
| | - Fernanda Loffler Niemeyer Attademo
- National Center for Research and Conservation of Aquatic Mammals by Chico Mendes Institute for Biodiversity Conservation (CMA/ICMBio), Alexandre Herculano, 197, bairro Gonzaga, Santos, São Paulo, 11050-031, Brazil
- Department of Zoology, Postgraduate Program in Animal Biology, Laboratory of Ecology, Behavior and Conservation, Federal University of Pernambuco (UFPE), Professor Morais Rego, s/n, Recife, Pernambuco, 50670-901, Brazil
| | - Fábia de Oliveira Luna
- National Center for Research and Conservation of Aquatic Mammals by Chico Mendes Institute for Biodiversity Conservation (CMA/ICMBio), Alexandre Herculano, 197, bairro Gonzaga, Santos, São Paulo, 11050-031, Brazil
| | - Alexsandra Fernandes Pereira
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
| | - Moacir Franco de Oliveira
- Postgraduate Program in Animal Science, Department of Biosciences, Biological and Health Sciences Center, Federal University of the Semi-Arid Region (UFERSA), Avenida Francisco Mota, 572, Bairro Costa e Silva, Mossoró, Rio Grande do Norte, 59625-900, Brazil
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Praxedes ÉA, Oliveira LRMD, da Silva Viana JV, Rodrigues LLV, de Brito Vieira Neto J, Sales SLA, Dos Santos Luciano MC, Oliveira MFD, Pessoa C, Pereira AF. Serum starvation is as efficient as roscovitine on the cycle synchronization in G 0/G 1 of red-rumped agouti fibroblasts. In Vitro Cell Dev Biol Anim 2024; 60:249-257. [PMID: 38427137 DOI: 10.1007/s11626-024-00866-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 02/05/2024] [Indexed: 03/02/2024]
Abstract
Fibroblast cycle synchronization in G0/G1 is an essential step for nuclear reprogramming by cloning or induced cells to pluripotency. Considering the diversity among rodents and the ecological and scientific importance of these animals, we compared the contact inhibition, serum starvation, and 10 µM of roscovitine as methods of synchronization of red-rumped agouti fibroblasts. The effects of each protocol were evaluated on the percentage of cycle phase, morphology, viability, and apoptosis levels. The results showed that culturing the cells to serum starvation for 24 h (75.9%), 48 h (81.6%), 72 h (86.2%), 96 h (84.0%), and 120 h (83.7%) yielded a significantly higher percentage of cells arrested in the G0/G1 (P < 0.05) phase than cells not subjected to any cell cycle synchronization method (31.4%). Also, this effect was not different between the times of 48 and 120 h (P > 0.05). A similar response was observed for cells cultured with roscovitine for 12 h (86.9%), 24 h (74.8%), and 48 h (81.7%), with a higher percentage of synchronized cells in G0/G1 compared to cells not submitted to any synchronization treatment (52.2%). Nevertheless, this effect was best evidenced at 12 h (P < 0.05). Also, the contact inhibition for 24-120 h could not synchronize cells in G0/G1, with values ranging from 70.9 to 77.9% (P > 0.05). Moreover, no difference was observed for morphology, viability, and apoptosis levels in any synchronization method (P > 0.05). Therefore, serum starvation is as efficient as roscovitine on cycle synchronization in G0/G1 of red-rumped agouti fibroblasts.
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Affiliation(s)
- Érika Almeida Praxedes
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | | | - João Vitor da Silva Viana
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | - Luanna Lorenna Vieira Rodrigues
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | | | | | | | - Moacir Franco de Oliveira
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | - Cláudia Pessoa
- Experimental Oncology Laboratory, Universidade Federal Do Ceará, Fortaleza, CE, Brazil
| | - Alexsandra Fernandes Pereira
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil.
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Fernandes DP, Praxedes ÉA, da Silva Viana JV, de Oliveira Santos MV, Silva AR, Freitas CIA, Pereira AF. Long-term preservation of established fibroblast lines from six-banded armadillos (Euphractus sexcintus, Linnaeus, 1758) by extended passage and cryopreservation. In Vitro Cell Dev Biol Anim 2024; 60:266-277. [PMID: 38424379 DOI: 10.1007/s11626-024-00871-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 02/12/2024] [Indexed: 03/02/2024]
Abstract
Establishing new somatic cell cultures has raised significant attention as an effective and convenient way to preserve genetic samples for different applications. Although many lines have been established in model animals, none derived from six-banded armadillo species is currently available. We report the successful isolation and characterization of fibroblasts from six-banded armadillos, evaluating the cell quality after extended culture and cryopreservation. Initially, we collected ear skin from five captive adult individuals and identified fibroblast lines by morphology, karyotyping, and immunophenotyping assays. The isolated fibroblasts were evaluated after several passages (fourth, seventh, and tenth passages) and cryopreservation by slow freezing. Cell morphology, viability, metabolism, proliferative activity, mitochondrial membrane potential, and apoptosis levels were analyzed. The skin explants had great adhesion, and cell outgrowth could be seen after 3-6 d. The cells were verified as fibroblasts at the fourth passage by vimentin expression and normal karyotype (2n = 58). The viability remained high (> 87%) and constant from the fourth to the tenth passage (p > 0.05). The passages did not change the cell morphology and metabolic and growth rates. Moreover, cryopreservation did not affect most evaluated parameters; post-thawed cells maintained their viability, growth, metabolism, and apoptosis levels. Nevertheless, cryopreservation increased mitochondrial membrane permeability and cell population doubling time compared to non-cryopreserved cells (p < 0.05). In summary, viable fibroblasts can be obtained from six-banded armadillo skin while conserving their quality as the number of passages increases and featuring few changes after cryopreservation.
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Affiliation(s)
- Denilsa Pires Fernandes
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoró, RN, Brazil
| | - Érika Almeida Praxedes
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoró, RN, Brazil
| | | | | | - Alexandre Rodrigues Silva
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid, Mossoró, RN, Brazil
| | - Carlos Iberê Alves Freitas
- Laboratory of Studies in Immunology and Wild Animals, Federal Rural University of Semi-Arid, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
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Vieira Rodrigues LL, Pereira AF. PERSPECTIVE: Potential and reality of cryopreserving somatic cells of wild felids for conservation. Cryo Letters 2023; 44:249-257. [PMID: 38032304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
The loss of biodiversity caused by anthropogenic actions is also a reality for the members of the Felidae family. Except for the domestic cat, all felid species have some degree of threat of extinction in their natural habitat. For this reason, felids have been included in conservation-related studies. This scenario has aroused increasing interest in the formation of somatic cell banks, which when efficiently implemented can be used in preservation strategies for the species. Nevertheless, one of the important steps in the formation of these banks is the understanding of the technical principles and variations involved in cryopreservation techniques, especially because cryopreservation increases the possibilities for Assisted Reproduction Technologies (ARTs) by making the use of biological materials independent of time and space. In wild felids, several species already have promising results in the formation of somatic cell banks, and studies aimed at better viability rates have been constantly proposed, as well as new species have been studied. In some species, aspects involved in successful cryopreservation are already well defined, and slow freezing associated with cryoprotectant solutions composed of intra- and extracellular substances is the most useful approach. The aim of this review was to present the main parameters involved in the elaboration of a somatic cell cryopreservation protocol and their effects, as well as to address the main results achieved for different wild felids. Doi.org/10.54680/fr23510110112.
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Affiliation(s)
- L L Vieira Rodrigues
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - A F Pereira
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil.
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de Oliveira GB, de Araújo Júnior HN, de Moura CEB, Favaron PO, Pereira AF, de Oliveira MF. Placental development in the early stages of red-rumped agouti pregnancy ( Dasyprocta leporina Linnaeus, 1758). J Vet Sci 2023; 24:e49. [PMID: 38031643 PMCID: PMC10556294 DOI: 10.4142/jvs.22323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 04/18/2023] [Accepted: 05/17/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND Hystricomorpha rodents display a similar placentation model to humans. The present study was carried out considering the scarcity of information concerning the placental development in agouti. OBJECTIVE Describe the microscopy of the placenta, subplacenta and yolk sac of agoutis in early pregnancy and report on the inversion of the yolk sac. METHODS Fifteen females between the 14th-32nd day of gestation were used following euthanasia. Gestational buttons were collected, fixed, processed, stained to optical microscopy or immunohistochemistry. RESULTS Chorioallantoic placenta (CP) ranged from conical to a half-sphere, as follows: from the 14th to 17th day, the CP displays an inverted "V" shape, predominantly formed by cytotrophoblasts; from 20 to 22 days, formed almost entirely by cytotrophoblasts; at 28 days, a half sphere, with distinct lobes and interlobular area, numerous maternal gaps delimited by syncytiotrophoblasts and trophoblast giant cells; at 32 days, globose and undergoing the maturation process. Subplacenta, located between decidua and CP, initially presents septa consisting of simple columnar epithelium and after 17 days, comprising stratified epithelium. Visceral yolk sac (VYS) is attached to two CP projections between 14 and 17 days, formed by a simple cubic epithelium and inverted. Between 20 and 22 days, the epithelium displays apical villous projections with cytoplasmic vacuoles and a vascularized mesoderm. After the 24th day, the VYS near the placenta is pleated, very vascularized and villous, with decreased villi sizes further away from the placenta. CONCLUSION The agouti CP displays similar characteristics to other hystricomorpha, including placenta lobulation, a subplacenta and an inverted vitelline placenta.
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Affiliation(s)
| | | | | | | | | | - Moacir Franco de Oliveira
- Department of Animal Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN 59.625-900, Brasil
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Praxedes ECG, Bezerra LGP, Luz NRN, da Silva AM, Pereira AF, Silva AR. In vitro culture of red-rumped agouti preantral follicles enclosed in fresh and vitrified ovarian tissues using TCM199 plus different pFSH concentrations. Anim Reprod 2023; 20:e20220113. [PMID: 37416866 PMCID: PMC10321683 DOI: 10.1590/1984-3143-ar2022-0113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 04/27/2023] [Indexed: 07/08/2023] Open
Abstract
Considering the relevance of establishing biodiversity conservation tools, the study aimed to investigate the TCM199 supplemented with different follicle-stimulating hormone (FSH) concentrations on survival and development of fresh and vitrified preantral follicles enclosed in red-rumped agouti ovarian tissues cultured in vitro. In the first experiment, six pairs of ovaries were fragmented and cultured for 6 days according to groups: 10 ng/mL pFSH (FSH10 group) and 50 ng/mL (FSH50 group). Non-cultured tissues were considered as a control. In the second experiment, vitrified/warmed fragments of four pairs of ovaries were cultured with the best concentration of FSH established (cryopreserved and cultured group). Non-cryopreserved (fresh control group) and cryopreserved but non-cultured (non-cultured group) tissues were used as controls. For both experiments, preantral follicles were evaluated for survival and development using morphological and viability analysis by trypan blue staining. After culturing fresh samples, FSH50 showed a higher percentage of morphologically normal follicles when compared to FSH10 (P < 0.05). This same response was observed for primordial follicles. Regardless of the concentrations of FSH used during in vitro culture, no difference was observed regarding the percentage of viable follicles and diameters (P > 0.05). Thus, the FSH50 group was used for second experiment, in which 76.2 ± 7.2% normal preantral follicles previously vitrified was found after 6-day culture, also presenting the highest values (P < 0.05) for morphology of primordial follicles (95.2 ± 4.7%). Nevertheless, in vitro culture did not affect the viability and diameter of preantral follicles of cryopreserved tissues (P > 0.05). In conclusion, TCM199 supplemented with 50 ng/mL FSH was efficient in maintaining the in vitro survival of fresh and vitrified red-rumped agouti preantral follicles. This was the first study related to the in vitro culture of ovarian preantral follicles in this species, aiming to contribute to its conservation.
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Affiliation(s)
| | | | - Náyra Rachel Nascimento Luz
- Laboratório de Conservação de Germoplasma Animal, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brasil
| | - Andréia Maria da Silva
- Laboratório de Conservação de Germoplasma Animal, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brasil
| | | | - Alexandre Rodrigues Silva
- Laboratório de Conservação de Germoplasma Animal, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brasil
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da Silva BA, Feijó FMC, Alves ND, Pimenta AS, Benicio LDM, da Silva Júnior EC, Santos CS, Pereira AF, Moura YBF, Gama GSP, Neto EDSL. Use of a product based on wood vinegar of Eucalyptus clone I144 used in the control of bovine mastitis. Vet Microbiol 2023; 279:109670. [PMID: 36739814 DOI: 10.1016/j.vetmic.2023.109670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 01/13/2023] [Accepted: 01/25/2023] [Indexed: 02/05/2023]
Abstract
Bovine mastitis is one of the most frequent diseases in dairy cattle worldwide. The use of antiseptics in milking, if properly used, can lead to a reduction in potentially pathogenic microorganisms and their transmission between herds. Several medicinal plants have antiseptic potential, including eucalyptus (Eucalyptus spp.). Therefore, the objective of this study was to evaluate the effectiveness of wood vinegar from Eucalyptus urograndis clone GG I144 (EU) as an antiseptic in vitro and in vivo; in addition, to its cytotoxicity and antimicrobial resistance. Fifteen bovines were used, lactating females 3-6 years of age and divided into three groups of five animals each. The wood vinegar was placed in the teats of the animal for 28 days and collections of cellular debris were performed every 7 days. At the Veterinary Microbiology Laboratory (LAMIV) of UFERSA, the samples were processed and serial dilution was performed in Petri plates with plate count agar (PCA) at 37 °C. Cytotoxicity was verified based on morphological alterations and metabolic activity. Morphological changes were not observed in all cells incubated with 1 % pyroligneous extract. The in vitro data demonstrated antimicrobial activity against S. aureus, S. agalactiae, Salmonella, E. coli and P. aeruginosa. The bacteria of the genus Staphylococcus and Corynebacterium were resistant to penicillin (PEN), rifampicin (RIF), nitrofurantoin (NIT), erythromycin (ERI), and ciprofloxacin (CIP). The extract was used in vivo in the post-dipping of dairy cows, which reduced the microbiological load present in the mammary glands from 4.74 to 2.54 CFU, indicating its future use as an antiseptic.
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Affiliation(s)
- Bismark Alves da Silva
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of Semi-Arid Region - UFERSA, Mossoró, Brazil
| | - Francisco Marlon Carneiro Feijó
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of Semi-Arid Region - UFERSA, Mossoró, Brazil.
| | - Nilza Dutra Alves
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of Semi-Arid Region - UFERSA, Mossoró, Brazil
| | - Alexandre Santos Pimenta
- Agricultural Sciences Academic Unit, Forest Sciences Graduate Program - PPGCFL, Forest, Bioenergy and Environment Research Group, Federal, University of Rio Grande do Norte - UFRN, Natal, Brazil
| | - Leon Denner Moreira Benicio
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of Semi-Arid Region - UFERSA, Mossoró, Brazil
| | - Enilson Claudio da Silva Júnior
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of Semi-Arid Region - UFERSA, Mossoró, Brazil
| | - Caio Sérgio Santos
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of Semi-Arid Region - UFERSA, Mossoró, Brazil
| | - Alexsandra Fernandes Pereira
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid Region, UFERSA, Mossoró, RN, Brazil
| | - Yasmin Beatriz França Moura
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid Region, UFERSA, Mossoró, RN, Brazil
| | - Gil Sander Prospero Gama
- Agricultural Sciences Academic Unit, Forest Sciences Graduate Program - PPGCFL, Forest, Bioenergy and Environment Research Group, Federal, University of Rio Grande do Norte - UFRN, Natal, Brazil
| | - Evilasio de Souza Lima Neto
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of Semi-Arid Region - UFERSA, Mossoró, Brazil
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Gadelha AIBB, de Oliveira MF, de Sousa ACFC, Diniz JARA, Lopes IRG, Fernandes BCC, Pereira AF, de Moura CEB. Extraembryonic membrane morphology in greater rheas ( Rhea americana americana Linnaeus, 1758). ZOOMORPHOLOGY 2023; 142:1-16. [PMID: 37360222 PMCID: PMC10027282 DOI: 10.1007/s00435-023-00602-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/16/2023] [Accepted: 02/27/2023] [Indexed: 03/29/2023]
Abstract
The greater rhea, Rhea americana, is a wild ratite of high scientific importance and significant and zootechnical value, especially considering the current development state of Brazilian poultry production, where research aimed at increasing the productivity of these animals has become extremely relevant. Studies concerning fetal attachments and embryonic development are paramount, as they can provide essential information concerning reproductive and nutritional animal management. However, a lack of information on greater rhea fetal morphology is noted. Therefore, the aim of the present study was to establish a standard model for fetal attachments in this species. Greater rhea eggs were incubated from 0 to 36 days, and macroscopic and microscopic embryonic attachment characterizations were performed. Histologically, all embryonic annexes exhibit germ layers, namely the ectoderm (outer layer), mesoderm (middle layer) and endoderm (inner layer). The findings indicate that greater rhea development patterns are similar to other birds.
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Affiliation(s)
- Ana Indira Bezerra Barros Gadelha
- Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Department of Animal Sciences, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Masters Program in Development and Environment, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
| | - Moacir Franco de Oliveira
- Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
| | | | - João Augusto Rodrigues Alves Diniz
- Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Department of Animal Sciences, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Doctoral Program in Development and Environment, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
| | - Igor Renno Guimarães Lopes
- Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Department of Animal Sciences, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Doctoral Program in Development and Environment, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
| | | | - Alexsandra Fernandes Pereira
- Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
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Praxedes ÉA, Silva MB, Medeiros de Oliveira LR, da Silva Viana JV, Pereira AF. Interactions Among Sucrose and Concentrations of Serum Fetal Bovine on the Cryopreservation of Somatic Cells Derived from Red-Rumped Agoutis. cryo letters 2023. [DOI: 10.54680/fr23210110212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
BACKGROUND: The synergistic action among the different extracellular cryoprotectants could improve somatic cell quality after thawing and provide bases for the formation of biobanks for redrumped agoutis. OBJECTIVE: This study evaluated the interactions among sucrose (SUC)
and concentrations of serum fetal bovine (FBS) on the cryopreservation of somatic cells derived from redrumped agoutis. MATERIALS AND METHODS: Cells were cryopreserved with 10% dimethyl sulfoxide and different concentrations of FBS (10%, 40%, and 90%) with or without 0.2 M SUC, totaling
six comparison groups. Non-cryopreserved cells were used as a control. Cells were evaluated for viability, metabolic activity, proliferative activity, reactive oxygen species (ROS), mitochondrial membrane potential (ΔΨm) and apoptosis levels. RESULTS: No difference was observed
among cryopreserved with DMSO containing (10FBS, 10FBS-SUC, 40FBS, 40FBS-SUC, 90FBS, 90FBSSUC) and non-cryopreserved groups for viability, metabolic activity, proliferative activity, and ROS levels. Interestingly, only cells cryopreserved with 90% FBS and SUC maintained the ΔΨm like
the control. This indicates that at high concentrations of FBS, SUC contributes to the maintenance of this parameter in cryopreserved cells. Moreover, at concentrations of 10% and 40% of FBS, SUC contributed to the maintenance of viability evaluated by the levels of apoptosis evaluated after
thawing. In summary, we verified that 90% FBS and 0.2 M SUC promote greater ability of cells after thawing. Additionally, SUC positively acts in cryopreservation solutions containing 10% and 40% FBS. CONCLUSION: This information is essential to an understanding of the mechanisms involved
in the interactions of extracellular cryoprotectants in somatic cell cryopreservation solutions of red-rumped agoutis.
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Affiliation(s)
- Érika Almeida Praxedes
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
| | - Maria Bárbara Silva
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
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11
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Praxedes EA, Silva MB, Medeiros de Oliveira LR, da Silva Viana JV, Pereira AF. Interactions among sucrose and concentrations of serum fetal bovine on the cryopreservation of somatic cells derived from red-rumped agoutis. Cryo Letters 2023; 44:110-108. [PMID: 37883160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
BACKGROUND The synergistic action among the different extracellular cryoprotectants could improve somatic cell quality after thawing and provide bases for the formation of biobanks for red-rumped agoutis. OBJECTIVE This study evaluated the interactions among sucrose (SUC) and concentrations of serum fetal bovine (FBS) on the cryopreservation of somatic cells derived from red-rumped agoutis. MATERIALS AND METHODS Cells were cryopreserved with 10% dimethyl sulfoxide and different concentrations of FBS (10%, 40%, and 90%) with or without 0.2 M SUC, totaling six comparison groups. Non-cryopreserved cells were used as a control. Cells were evaluated for viability, metabolic activity, proliferative activity, reactive oxygen species (ROS), mitochondrial membrane potential and apoptosis levels. RESULTS No difference was observed among cryopreserved with DMSO containing (10FBS, 10FBS-SUC, 40FBS, 40FBS-SUC, 90FBS, 90FBS-SUC) and non-cryopreserved groups for viability, metabolic activity, proliferative activity, and ROS levels. Interestingly, only cells cryopreserved with 90% FBS and SUC maintained the mitochondrial membrane potential like the control. This indicates that at high concentrations of FBS, SUC contributes to the maintenance of this parameter in cryopreserved cells. Moreover, at concentrations of 10% and 40% of FBS, SUC contributed to the maintenance of viability evaluated by the levels of apoptosis evaluated after thawing. In summary, we verified that 90% FBS and 0.2 M SUC promote greater ability of cells after thawing. Additionally, SUC positively acts in cryopreservation solutions containing 10% and 40% FBS. CONCLUSION This information is essential to an understanding of the mechanisms involved in the interactions of extracellular cryoprotectants in somatic cell cryopreservation solutions of red-rumped agoutis. DOI: 10.54680/fr23210110212.
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Affiliation(s)
- E A Praxedes
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
| | - M B Silva
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
| | | | - J V da Silva Viana
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
| | - A F Pereira
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil.
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12
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Silva AR, Pereira AF, Comizzoli P. Biobanking and use of gonadal tissues - a promising strategy for conserving wildlife from the Caatinga biome. Anim Reprod 2023; 19:e20220135. [PMID: 36819484 PMCID: PMC9924771 DOI: 10.1590/1984-3143-ar2022-0135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 01/24/2023] [Indexed: 02/19/2023] Open
Abstract
Biological Resource Banks (BRB) or Genetic Resource Banks (GRB) are critical tools for the conservation of animal biodiversity. According to the International Union for Conservation of Nature, more than 38,500 species are threatened with extinction, out of a total of 138,300 surveyed species. These banks are repositories of biological samples and data recovered and preserved for the long term by zoos, universities, research centers and other conservation organizations. In recent years, BRB have increasingly included ovarian and testicular tissues as additional options to rescue and propagate wild species, especially those at risk of extinction. After in vitro culture or grafting, gonadal tissues are potential sources of matured gametes that can be used for Assisted Reproduction Technologies while informing about gametogenesis or mechanisms involved in infertility. It therefore is crucial to properly recover, cryopreserve, and culture these tissues using species-specific protocols. Developing BRBs is currently one of the strategies to preserve species from the Caatinga biome - an exclusively Brazilian biome with a rich wild fauna that suffers from anthropogenic activities. Among wild species from this biome, studies have been primarily conducted in collared peccaries, agoutis, cavies, and armadillos to preserve their ovarian and testicular tissues. Additionally, domestic species such as the domestic cat and donkeys have been proposed as models for wild species that are phylogenetically close. This review addresses the main technical aspects involved in obtaining BRB derived from gonadal tissues in some wild species of the Caatinga biome. It reports recent advances and perspectives to use these biological materials for wildlife conservation.
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Affiliation(s)
- Alexandre Rodrigues Silva
- Laboratório de Conservação de Germoplasma Animal, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brasil,Corresponding author:
| | | | - Pierre Comizzoli
- Smithsonian National Zoo and Conservation Biology Institute, Washington, USA
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13
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Oliveira REMD, Attademo FLN, Sousa ACFCD, Magalhães MDS, Oliveira RMD, de Moura CEB, Silva AR, Pereira AF, Fragoso ABL, Silva FJDL, Oliveira MFD. Oropharyngeal cavity floor morphology in Eretmochelys imbricata (Testudines: Cheloniidae) hatchlings and evolutionary implications. Anat Rec (Hoboken) 2023; 306:343-353. [PMID: 36054069 DOI: 10.1002/ar.25061] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 08/15/2022] [Accepted: 08/17/2022] [Indexed: 01/25/2023]
Abstract
Morphological studies of the oropharyngeal cavity of chelonians have become an interesting tool in the understanding of evolutionary processes associated with feeding habits in aquatic animals and the transition from aquatic to terrestrial forms. In this context, the aim of the present study was to describe the oropharyngeal cavity floor morphology of hawksbill sea turtle (Eretmochelys imbricata) hatchlings. Ten dead hatchlings of undefined sex were obtained from nests hatched on the coast of the state of Rio Grande do Norte, Brazil. The heads of each specimen were fixed, dissected, and analyzed at the macroscopic and microscopic levels. The oropharyngeal cavity floor of the hawksbill sea turtle hatchlings is formed by the tongue, pharynx, floor muscles, and hyolingual skeleton, delimited in the rostral and lateral directions by a keratinized beak, called the rhamphotheca, and in the caudal region at the limit between the pharynx and the esophagus. The tongue muscles and the muscles that support the floor of the oral cavity comprise the following: m. hypoglossohyoideus, m. hypoglossoglossus, m. hyoglossus, m. genioglossus, m. constrictor laryngis, m. geniohyoideus pars lateralis, and m. intermandibularis. The oropharyngeal cavity floor mucosa is formed by keratinized stratified squamous epithelium and the lamina propria is formed by loose connective tissue. The floor mucosa is devoid of taste buds. We believe that the basic oropharyngeal cavity floor characteristics in hawksbill sea turtle hatchlings may comprise indications that these animals are plesiomorphic and that semiaquatic and terrestrial turtles may have undergone adaptations to feed out of water.
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Affiliation(s)
- Radan Elvis Matias de Oliveira
- Programa de Pós-Graduação em Ciência Animal (PPGCA), Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brazil.,Centro de Estudos e Monitoramento Ambiental (CEMAM), Areia Branca, Rio Grande do Norte, Brazil.,Projeto Cetáceos da Costa Branca (PCCB), Universidade do Estado do Rio Grande do Norte (UERN), Mossoró, Rio Grande do Norte, Brazil
| | - Fernanda Loffler Niemeyer Attademo
- Centro de Estudos e Monitoramento Ambiental (CEMAM), Areia Branca, Rio Grande do Norte, Brazil.,Centro Universitário Internacional (UNINTER), Curitiba, Paraná, Brazil
| | - Ana Caroline Freitas Caetano de Sousa
- Departamento de Ciências Animais, Laboratório de Morfofisiologia Animal Aplicada (LABMORFA), Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brazil
| | | | - Rysónely Maclay de Oliveira
- Programa de Pós-Graduação em Ciência Animal (PPGCA), Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brazil.,Projeto Cetáceos da Costa Branca (PCCB), Universidade do Estado do Rio Grande do Norte (UERN), Mossoró, Rio Grande do Norte, Brazil
| | - Carlos Eduardo Bezerra de Moura
- Programa de Pós-Graduação em Ciência Animal (PPGCA), Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brazil
| | - Alexandre Rodrigues Silva
- Programa de Pós-Graduação em Ciência Animal (PPGCA), Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brazil
| | - Alexsandra Fernandes Pereira
- Programa de Pós-Graduação em Ciência Animal (PPGCA), Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brazil
| | - Ana Bernadete Lima Fragoso
- Centro de Estudos e Monitoramento Ambiental (CEMAM), Areia Branca, Rio Grande do Norte, Brazil.,Projeto Cetáceos da Costa Branca (PCCB), Universidade do Estado do Rio Grande do Norte (UERN), Mossoró, Rio Grande do Norte, Brazil
| | - Flávio José de Lima Silva
- Centro de Estudos e Monitoramento Ambiental (CEMAM), Areia Branca, Rio Grande do Norte, Brazil.,Projeto Cetáceos da Costa Branca (PCCB), Universidade do Estado do Rio Grande do Norte (UERN), Mossoró, Rio Grande do Norte, Brazil.,Programa Regional de Pós-Graduação em Desenvolvimento e Meio Ambiente (PRODEMA), Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte, Brazil
| | - Moacir Franco de Oliveira
- Programa de Pós-Graduação em Ciência Animal (PPGCA), Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brazil
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Rebouças CEV, Diniz JARA, de Sousa ACFC, de Oliveira REM, de Moura CEB, Guerra RR, Pereira AF, de Assis Neto AC, de Oliveira MF. Morphology of the major salivary glands of Spix's
Yellow‐Toothed
Cavys (
Galea spixii
Wagler
, 1831). ACTA ZOOL-STOCKHOLM 2023. [DOI: 10.1111/azo.12456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Carlos Eduardo Vale Rebouças
- Applied Animal Morphophysiology Laboratory, Department of Animal Sciences Universidade Federal Rural do Semi‐Árido Mossoró RN Brazil
- Postgraduate Program in Animal Science, Department of Animal Sciences Universidade Federal Rural do Semi‐Árido Mossoró RN Brazil
| | - João Augusto Rodrigues Alves Diniz
- Applied Animal Morphophysiology Laboratory, Department of Animal Sciences Universidade Federal Rural do Semi‐Árido Mossoró RN Brazil
- Postgraduate Program in Animal Science, Department of Animal Sciences Universidade Federal Rural do Semi‐Árido Mossoró RN Brazil
| | | | - Radan Elvis Matias de Oliveira
- Applied Animal Morphophysiology Laboratory, Department of Animal Sciences Universidade Federal Rural do Semi‐Árido Mossoró RN Brazil
- Postgraduate Program in Animal Science, Department of Animal Sciences Universidade Federal Rural do Semi‐Árido Mossoró RN Brazil
| | - Carlos Eduardo Bezerra de Moura
- Postgraduate Program in Animal Science, Department of Animal Sciences Universidade Federal Rural do Semi‐Árido Mossoró RN Brazil
| | - Ricardo Romão Guerra
- Laboratory of Histology, Department of Veterinary Sciences Universidade Federal da Paraíba Areia PB Brazil
| | - Alexsandra Fernandes Pereira
- Postgraduate Program in Animal Science, Department of Animal Sciences Universidade Federal Rural do Semi‐Árido Mossoró RN Brazil
| | - Antônio Chaves de Assis Neto
- Department of Surgery, Anatomy of Domestic and Wild Animals Sector, School of Veterinary Medicine Universidade de São Paulo São Paulo SP Brazil
| | - Moacir Franco de Oliveira
- Applied Animal Morphophysiology Laboratory, Department of Animal Sciences Universidade Federal Rural do Semi‐Árido Mossoró RN Brazil
- Postgraduate Program in Animal Science, Department of Animal Sciences Universidade Federal Rural do Semi‐Árido Mossoró RN Brazil
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15
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da Silva Viana JV, de Medeiros Paiva Moura LF, Praxedes EA, Costa de Aquino LV, do Nascimento MB, Prazeres Junior FR, de Oliveira MF, Pereira AF. Effects of vitrification techniques on the formation of skin cryobank of the ocelot (Leopardus pardalis). Cryo Letters 2023; 44:47-56. [PMID: 36629841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND Skin cryobanks represent important tools for the conservation of the maximum genetic representation of a population, especially those with a certain degree of threat to extinction, such as the ocelot. A relevant step towards the proper establishment of these banks is the definition of adequate cryopreservation techniques for the conservation of the skin. OBJECTIVE We evaluated the effects of two different techniques [direct vitrification in cryovials (DVC) and solid-surface vitrification (SSV)] for the preservation of ear skin derived from ocelot. MATERIALS & METHODS For both techniques, we vitrified the ear skin using Dulbeccos modified Eagles medium with 3.0 M dimethyl sulfoxide, 0.25 M sucrose, and 10% fetal bovine serum. Non-cryopreserved tissues were used as control (control group). All tissues were analyzed for their morphometric characteristics by conventional histology and morphological / functional analysis by cell ability during the culture. RESULTS While tissues cryopreserved by DVC showed similar values for dermis thickness and number of perinuclear halos to the control, tissues cryopreserved by SSV showed similarities to the control regarding the number of melanocytes, percentage of collagen fibers, and numbers of viable cells by apoptosis analysis. Additionally, none of the vitrification techniques affected stratum corneum thickness, number of keratinocytes, tissue proliferative activity, cell viability, or metabolism. CONCLUSION Both vitrification techniques (DVC and SSV) can be used for the conservation of ocelot skin; however, SSV guarantees a higher cellular quality after in vitro tissue culture in most of the parameters evaluated, such as viability, metabolism, and apoptosis analysis. doi.org/10.54680/fr23110110412.
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Affiliation(s)
- J V da Silva Viana
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | | | - E A Praxedes
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - L V Costa de Aquino
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - M B do Nascimento
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - F R Prazeres Junior
- Residency Program in Professional Health Area in Veterinary Medicine, UFERSA, Mossoro, RN, Brazil
| | - M F de Oliveira
- Laboratory of Applied Animal Morphophysiology, UFERSA, Mossoro, RN, Brazil
| | - A F Pereira
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil.
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16
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da Silva Viana JV, de Medeiros Paiva Moura LF, Almeida Praxedes É, Costa de Aquino LV, do Nascimento MB, Prazeres Júnior FR, de Oliveira MF, Fernandes Pereira A. Effects of Vitrification Techniques on the Formation of Skin Cryobank of the Ocelot ( Leopardus Pardalis). cryo letters 2023. [DOI: 10.54680/fr23110110412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND: Skin cryobanks represent important tools for the conservation of the maximum genetic representation of a population, especially those with a certain degree of threat to extinction, such as the ocelot. A relevant step towards the proper establishment of these banks
is the definition of adequate cryopreservation techniques for the conservation of the skin. OBJECTIVE: We evaluated the effects of two different techniques [direct vitrification in cryovials (DVC) and solid-surface vitrification (SSV)] for the preservation of ear skin derived from
ocelot. MATERIALS & METHODS: For both techniques, we vitrified the ear skin using Dulbecco's modified Eagle's medium with 3.0 M dimethyl sulfoxide, 0.25 M sucrose, and 10% fetal bovine serum. Non-cryopreserved tissues were used as control (control group). All tissues were analyzed
for their morphometric characteristics by conventional histology and morphological/functional analysis by cell ability during the culture. RESULTS: While tissues cryopreserved by DVC showed similar values for dermis thickness and number of perinuclear halos to the control, tissues cryopreserved
by SSV showed similarities to the control regarding the number of melanocytes, percentage of collagen fibers, and numbers of viable cells by apoptosis analysis. Additionally, none of the vitrification techniques affected stratum corneum thickness, number of keratinocytes, tissue proliferative
activity, cell viability, or metabolism. CONCLUSION: Both vitrification techniques (DVC and SSV) can be used for the conservation of ocelot skin; however, SSV guarantees a higher cellular quality after in vitro tissue culture in most of the parameters evaluated, such as viability, metabolism,
and apoptosis analysis.
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Affiliation(s)
- João Vitor da Silva Viana
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | | | - Érika Almeida Praxedes
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
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17
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Rodrigues LLV, Moura YBF, Viana JVDS, de Oliveira LRM, Praxedes ÉA, Vieira JDB, Sales SLA, Silva HVR, Luciano MCDS, Pessoa C, Pereira AF. Full confluency, serum starvation, and roscovitine for inducing arrest in the G 0/G 1 phase of the cell cycle in puma skin-derived fibroblast lines. Anim Reprod 2023; 20:e20230017. [PMID: 37101424 PMCID: PMC10124155 DOI: 10.1590/1984-3143-ar2023-0017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/22/2023] [Indexed: 04/28/2023] Open
Abstract
The puma population is constantly decreasing, and cloning by somatic cell nuclear transfer can be used to conserve the species. One of the factors determining the success of the development of cloned embryos is the cell cycle stage of the donor cells. We evaluated the effects of full confluency (~100%), serum starvation (0.5% serum), and roscovitine (15 µM) treatments on the cell cycle synchronization in G0/G1 of puma skin-derived fibroblasts by flow cytometric analysis. Also, we assessed the effects of these synchronization methods on morphology, viability, and apoptosis levels using microscopy tools. The results showed that culturing the cells to confluence for 24 h (84.0%), 48 h (84.6%), and 72 h (84.2%) and serum starvation for 96 h (85.4%) yielded a significantly higher percentage of cells arrested in the G0/G1 (P 0.05) phase than cells not subjected to any cell cycle synchronization method (73.9%). Nevertheless, while serum starvation reduced the percentage of viable cells, no difference was observed for the full confluence and roscovitine treatments (P 0.05). Moreover, roscovitine for 12 h (78.6%) and 24 h (82.1%) was unable to synchronize cells in G0/G1 (P 0.05). In summary, full confluency induces puma fibroblast cell cycle synchronization at the G0/G1 stage without affecting cell viability. These outcomes may be valuable for planning donor cells for somatic cell nuclear transfer in pumas.
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Affiliation(s)
| | | | | | | | - Érika Almeida Praxedes
- Laboratório de Biotecnologia Animal, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brasil
| | - José de Brito Vieira
- Laboratório de Oncologia Experimental, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | | | | | | | - Claudia Pessoa
- Laboratório de Oncologia Experimental, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - Alexsandra Fernandes Pereira
- Laboratório de Biotecnologia Animal, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brasil
- Corresponding author:
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18
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Fernandes DP, Praxedes ÉA, Freitas CIA, Pereira AF. Ex Situ Approaches for the Conservation of Genetic Resources in the Superorder Xenarthra. Biopreserv Biobank 2022. [DOI: 10.1089/bio.2021.0182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Denilsa Pires Fernandes
- Department of Biosciences, Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoró, Brazil
| | - Érika Almeida Praxedes
- Department of Biosciences, Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoró, Brazil
| | - Carlos Iberê Alves Freitas
- Department of Biosciences, Laboratory of Studies in Immunology and Wild Animals, Federal Rural University of Semi-Arid (UFERSA), Mossoró, Brazil
| | - Alexsandra Fernandes Pereira
- Department of Biosciences, Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoró, Brazil
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Feijo FMC, Fernandes FDC, Alves ND, Pimenta AS, Santos CS, Rodrigues GSDO, Pereira AF, Benicio LDM, Moura YBF. Efficiency of Pyroligneous Extract from Jurema Preta (Mimosa tenuiflora [Willd.] Poiret) as an Antiseptic in Cats (Felis catus) Subjected to Ovariosalpingohysterectomy. Animals (Basel) 2022; 12:ani12182325. [PMID: 36139185 PMCID: PMC9495156 DOI: 10.3390/ani12182325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/07/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary The pyroligneous extract from Mimosa tenuiflora was used as an antiseptic in cats. The objective of this study was to analyze the action of 20% pyroligneous extract from M. tenuiflora as an antiseptic for surgical wounds of cats subjected to ovariohysterectomy. In addition to the absence of cytotoxicity, the number of bacteria was reduced after treatment. Tissue dehiscence, hyperemia, edema, crust, and secretions were not observed. Thus, the pyroligneous extract of M. tenuiflora has potential as a natural antiseptic alternative. Abstract Pyroligneous extract of Jurema preta (Mimosa tenuiflora [Willd.] Poiret) was evaluated for its efficacy as a cutaneous antiseptic in cats (Felis catus) that were subjected to ovariosalpingohysterectomy. For this purpose, 30 cats without a defined breed were sterilized and divided into two groups. The first group was the positive control, treated with 0.5% chlorhexidine-alcohol solution, and the second group was treated with 20% pyroligneous extract of M. tenuiflora. Regardless of age and sex, all animals had visible healing at similar times. A significant reduction in bacterial growth was observed in animals treated with the extract, and no cytotoxicity was observed in the feline epithelial cells. In addition, surgical wounds of cats treated with M. tenuiflora extract exhibited improved healing. On agar plates, treatment with both chlorhexidine and M. tenuiflora extract resulted in the inhibition zones for all bacterial strains isolated from surgical wounds. Therefore, M. tenuiflora extract is demonstrated to have antiseptic effects on the surgical wounds of cats undergoing ovariosalpingohysterectomy.
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Affiliation(s)
- Francisco Marlon Carneiro Feijo
- Center of Agrarian Sciences, Federal Rural University of Semi-Arid Region—UFERSA, Mossoro 59625-900, Brazil
- Correspondence: ; Tel.: +55-(84)-98864-1017
| | | | - Nilza Dutra Alves
- Center of Agrarian Sciences, Federal Rural University of Semi-Arid Region—UFERSA, Mossoro 59625-900, Brazil
| | - Alexandre Santos Pimenta
- Agricultural Sciences Academic Unit, Forest Sciences Graduate Program—PPGCFL, Forest, Bioenergy and Environment Research Group, Federal University of Rio Grande do Norte—UFRN, Natal 59078-970, Brazil
| | - Caio Sergio Santos
- Center of Agrarian Sciences, Federal Rural University of Semi-Arid Region—UFERSA, Mossoro 59625-900, Brazil
| | | | - Alexsandra Fernandes Pereira
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid Region—UFERSA, Mossoro 59625-900, Brazil
| | | | - Yasmin Beatriz França Moura
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid Region—UFERSA, Mossoro 59625-900, Brazil
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de Oliveira LRM, de Aquino LVC, Santos MVDO, Freitas VJDF, Bertini LM, Pereira AF. Antioxidant effect of bioactive compounds isolated from Syzygium aromaticum essential oil on the in vitro developmental potential of bovine oocytes. Livest Sci 2022. [DOI: 10.1016/j.livsci.2022.104932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Santos MVDO, Silva HVR, Bezerra LGP, Oliveira LRMD, Oliveira MFD, Alves ND, Silva LDMD, Silva AR, Pereira AF. Heterologous in vitro fertilization and embryo production for assessment of jaguar (Panthera onca Linnaeus, 1758) frozen-thawed semen in different extenders. Anim Reprod 2022; 19:e20210093. [PMID: 35371300 PMCID: PMC8958878 DOI: 10.1590/1984-3143-ar2021-0093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 02/22/2022] [Indexed: 11/22/2022] Open
Abstract
Heterologous in vitro fertilization (IVF) is an important tool for assessing fertility of endangered mammals such as the jaguar, considering difficult access to females for artificial insemination and to obtain homologous oocytes. We aimed to evaluate the fertility of jaguar sperm cryopreserved with different extenders, using domestic cat oocytes to assess the development of hybrid embryos. Semen from four captive jaguars was obtained by electroejaculation. Samples were cryopreserved in powdered coconut water (ACP-117c) or Tris extender containing 20% egg yolk and 6% glycerol. Thawed spermatozoa were resuspended (2.0 × 106 spermatozoa/mL) in IVF medium and co-incubated with cat oocytes matured in vitro for 18 h. Presumptive zygotes were cultured for 7 days. After 48 h, cleavage rate was evaluated, and non-cleaved structures were stained for IVF evaluation. On days 5 and 7, the rate of morula and blastocyst formation was assessed. Data were analyzed using the Fisher exact test (p < 0.05). No difference was observed between ACP-117c and Tris extenders, respectively, for oocytes with 2nd polar body (2/51, 3.9 ± 2.9% vs. 2/56, 3.6 ± 3.1%), pronuclear structures (5/51, 9.8 ± 4.7% vs. 8/56, 14.3 ± 8.0%), and total IVF rates (7/36, 19.4 ± 5.0% vs. 10/37, 27.0 ± 13.8%). All the samples fertilized the oocytes, with 22.9 ± 3.2% (16/70) and 16.7 ± 3.6% (12/72) cleavage of mature oocytes for ACP-117c and Tris extenders, respectively. Morula rates of 4.3 ± 2.3% (3/70) and 5.6 ± 2.2% (4/72) were observed for ACP-117c and Tris, respectively. Only the Tris extender demonstrated blastocyst production (2/12, 16.7 ± 1.5% blastocyst/cleavage). We demonstrated that jaguar ejaculates cryopreserved using ACP-117c and Tris were suitable for IVF techniques, with blastocyst production by ejaculates cryopreserved in Tris. This is a first report of embryos produced in vitro using jaguar sperm and domestic cat oocytes through IVF.
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de Oliveira LRM, Aquino LVCD, Santos MVDO, Freitas VJDF, Bertini LM, Pereira AF. Effects of different concentrations of eugenol in maturation medium on bovine oocytes, oxidative status and preimplantation embryos. Anim Prod Sci 2022. [DOI: 10.1071/an21197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
ContextEugenol is a bioactive compound with defined attributes, including a role in reducing oxidative stress. Therefore, it is an interesting candidate for in vitro embryo production that has an environment that favours the formation of reactive oxygen species.AimThe objective of the study was to evaluate different concentrations of eugenol in bovine oocytes during in vitro maturation to observe the oxidative status and embryonic development.MethodsOocytes were allocated into five groups: control (without antioxidant), 100μM cysteamine, 83μM eugenol (E83), 100μM eugenol and 120μM eugenol. Three experiments were performed with 23 replicates. Oocytes were evaluated for metaphase II, first polar body, cytoplasmic maturation, cumulus cell expansion and viability. Oxidative status was measured by mitochondrial membrane potential, reactive oxygen species and glutathione. Oocytes were artificially activated and cultured in vitro.Key resultsThe presence of eugenol at 83μM improved the metaphase II rate compared with all treatments (P<0.05). E83 and 100μM cysteamine improved first polar body extrusion, cumulus cell expansion, viability and mitochondrial aggregation rates (P<0.05). All antioxidant treatments resulted in increased cytoplasmic maturation and decreased mitochondrial membrane potential (P<0.05). Reactive oxygen species levels decreased, and glutathione levels increased with E83 and 100μM cysteamine treatments (P<0.05). Finally, the E83 group increased the cleavage rates, embryo development, number of expanded blastocysts and number of blastomeres (P<0.05).ConclusionsA low concentration of eugenol (83μM) is sufficient to generate a significant effect, attenuating the oxidative status and optimising in vitro maturation and embryo development.ImplicationsThis study provides information of a new natural antioxidant with defined concentration, 83μM eugenol, representing a lower cost alternative capable of improving the efficiency of in vitro embryo production in cattle.
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da Silva Viana JV, de Medeiros Paiva Moura LF, Praxedes EA, Costa de Aquino LV, do Nascimento MB, Prazeres Junior FR, de Oliveira MF, Pereira AF. Effects of vitrification techniques on the formation of skin cryobank of the ocelot (Leopardus pardalis). Cryo Letters 2022; 44:47-56. [PMID: 36625875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Skin cryobanks represent important tools for the conservation of the maximum genetic representation of a population, especially those with a certain degree of threat to extinction, such as the ocelot. A relevant step towards the proper establishment of these banks is the definition of adequate cryopreservation techniques for the conservation of the skin. OBJECTIVE We evaluated the effects of two different techniques [direct vitrification in cryovials (DVC) and solid-surface vitrification (SSV)] for the preservation of ear skin derived from ocelot. MATERIALS & METHODS For both techniques, we vitrified the ear skin using Dulbeccos modified Eagles medium with 3.0 M dimethyl sulfoxide, 0.25 M sucrose, and 10% fetal bovine serum. Non-cryopreserved tissues were used as control (control group). All tissues were analyzed for their morphometric characteristics by conventional histology and morphological / functional analysis by cell ability during the culture. RESULTS While tissues cryopreserved by DVC showed similar values for dermis thickness and number of perinuclear halos to the control, tissues cryopreserved by SSV showed similarities to the control regarding the number of melanocytes, percentage of collagen fibers, and numbers of viable cells by apoptosis analysis. Additionally, none of the vitrification techniques affected stratum corneum thickness, number of keratinocytes, tissue proliferative activity, cell viability, or metabolism. CONCLUSION Both vitrification techniques (DVC and SSV) can be used for the conservation of ocelot skin; however, SSV guarantees a higher cellular quality after in vitro tissue culture in most of the parameters evaluated, such as viability, metabolism, and apoptosis analysis. doi.org/10.54680/fr23110110412.
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Affiliation(s)
- J V da Silva Viana
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | | | - E A Praxedes
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - L V Costa de Aquino
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - M B do Nascimento
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - F R Prazeres Junior
- Residency Program in Professional Health Area in Veterinary Medicine, UFERSA, Mossoro, RN, Brazil
| | - M F de Oliveira
- Laboratory of Applied Animal Morphophysiology, UFERSA, Mossoro, RN, Brazil
| | - A F Pereira
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil.
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Praxedes ÉCG, Bezerra LGP, Moreira SSJ, Santos CS, Brasil AV, Silva AMD, Guerreiro DD, Pereira AF, Rodrigues APR, Silva AR. Microbiological load and preantral follicle preservation using different systems for ovarian tissue vitrification in the red-rumped agouti. Cryobiology 2021; 103:123-128. [PMID: 34454959 DOI: 10.1016/j.cryobiol.2021.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 07/21/2021] [Accepted: 08/23/2021] [Indexed: 12/01/2022]
Abstract
We evaluated the effect of open and closed systems used for ovarian tissue vitrification on the microbiological load and preservation of preantral follicles (PAFs) in the red-rumped agoutis. The ovaries from eight females were recovered and fragmented, with four cortexes fragments immediately fixed and evaluated (fresh group). The other fragments were processed for the solid-surface vitrification method (SSV) or an ovarian tissue cryosystem (OTC) using fetal calf serum, ethylene glycol, and sucrose as cryoprotectants, stored for two weeks, and rewarmed. Subsequently, fragments were subjected to a 24-h in vitro culture and assessed for microbiological load, PAF morphology, and DNA integrity. There was no fungal contamination; however, the vitrified samples from two individuals showed bacterial contamination of 79 200 colony forming units per milliliter (CFU)/mL for SSV and 3120 CFU/mL for OTC. From those samples, a total of eight different types of bacterial colonies were isolated and identified as coagulase-negative Staphylococci and Gram-positive bacilli. Regarding PAF morphology, both systems provided adequate preservation, with values higher than 70% normal follicles observed before and after culture. The TUNEL assay revealed that both SSV (52.39%) and OTC (41.67%) could preserve DNA integrity after vitrification and after 24 h of culture. In summary, both open and closed systems were equally efficient in preserving agouti ovarian tissues, especially concerning the preantral follicle morphology and DNA integrity; however, the OTC seems to provide a less adequate environment for bacterial proliferation.
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Affiliation(s)
- Érica Camila Gurgel Praxedes
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural Do Semi-Árido (UFERSA), BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Luana Grasiele Pereira Bezerra
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural Do Semi-Árido (UFERSA), BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Samara Sandy Jeronimo Moreira
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural Do Semi-Árido (UFERSA), BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Caio Sergio Santos
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural Do Semi-Árido (UFERSA), BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Andreza Vieira Brasil
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural Do Semi-Árido (UFERSA), BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Andréia Maria da Silva
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural Do Semi-Árido (UFERSA), BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Denise Damasceno Guerreiro
- Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), Faculdade de Veterinária, Universidade Do Ceara, Av. Paranjana 1700, Campus Do Itaperi, 60714-903, Fortaleza, CE, Brazil
| | | | - Ana Paula Ribeiro Rodrigues
- Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), Faculdade de Veterinária, Universidade Do Ceara, Av. Paranjana 1700, Campus Do Itaperi, 60714-903, Fortaleza, CE, Brazil
| | - Alexandre Rodrigues Silva
- Laboratory on Animal Germplasm Conservation, Universidade Federal Rural Do Semi-Árido (UFERSA), BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil.
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Rodrigues LLV, do Nascimento MB, Costa de Aquino LV, Caritas Barros Dos Santos MD, Silva AR, de Oliveira MF, Pereira AF. Evaluation of different cryoprotectant solutions for the cryopreservation of somatic tissues of Dasyprocta leporina (Linnaeus, 1758). Cryo Letters 2021; 42:210-219. [PMID: 35363840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND Somatic tissue banks represent important tools for the conservation of wild mammals, aiming at the immediate maintenance and safeguarding of biological samples. For agouti, Dasyprocta leporina, studies on the formation of these banks are still scarce, especially regarding protocols of the best cryoprotectant solution employed. OBJECTIVE To optimize the cryoprotectant solution [ethylene glycol (EG), dimethyl sulfoxide (DMSO), sucrose (SUC)] used for the cryopreservation of agouti somatic tissues. MATERIALS AND METHODS We treated ear tissues with various cryoprotectant solutions: 3.0 M EG (EG group), 3.0 M EG and 0.25 M SUC (EG-SUC group), 3.0 M DMSO (DMSO group), 3.0 M DMSO and 0.25 M SUC (DMSO-SUC group), 1.5 M EG and 1.5 M DMSO (EG-DMSO group) and 1.5 M EG, 1.5 M DMSO and 0.25 M SUC (EG-DMSO-SUC group). Non-cryopreserved tissues were used as controls. All tissues were analyzed for their ultrastructural and morphometric characteristics by scanning electron microscopy and conventional histology. RESULTS EG-DMSO-SUC was found to be the optimal cryoprotectant solution in terms of the evaluated parameters, such as thickness of the dermis and skin, number of perinuclear halos, proliferative potential, number of empty lacunas and degenerated chondrocytes. CONCLUSION Agouti somatic tissue cryopreservation may serve for its conservation and as an experimental model for the development of preservation methods for species of the same genus that are either vulnerable or critically endangered.
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Affiliation(s)
- L L V Rodrigues
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - M B do Nascimento
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - L V Costa de Aquino
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | | | - A R Silva
- Laboratory of Animal Germplasm Conservation, UFERSA, Mossoro, RN, Brazil
| | - M F de Oliveira
- Laboratory of Applied Animal Morphophysiology, UFERSA, Mossoro, RN, Brazil
| | - A F Pereira
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil.
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Lira GPDO, Borges AA, Nascimento MBD, Aquino LVCD, Moura LFDMP, Silva HVR, Ribeiro LR, Oliveira MFD, Pereira AF. Effects of somatic tissue cryopreservation on puma (Puma concolor L, 1771) tissue integrity and cell preservation after in vitro culture. Cryobiology 2021; 101:52-60. [PMID: 34118241 DOI: 10.1016/j.cryobiol.2021.06.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 11/30/2022]
Abstract
Somatic resource banks play a crucial role in the conservation of genetic diversity, allowing for the preservation of biological samples from different populations. Puma somatic cells can be recovered from these banks and used in assisted techniques toward enhancing their multiplication and conservation. In response to the population reduction of this ecologically importance species, we aimed to evaluate the capacity of cryopreservation of somatic tissues on the maintenance of the integrity and quality of the cells recovered after culture, with the aim of establishing a somatic tissue bank that will allow for the safeguarding of a wide genetic sampling of pumas. Cryopreservation increased the thickness of the corneum layer in the tissues, and the number of perinuclear halos and empty gaps. Nevertheless, cryopreservation was able to maintain normal fibroblast patterns, even showing an increase in the percentage of collagen fibers. Cryopreservation maintained the proliferative potential of the tissues and the parameters evaluated during in vitro culture, mainly regarding the viability, proliferative activity, and apoptosis levels. Nevertheless, cells from cryopreserved tissues showed decreased metabolism and mitochondrial membrane potential when compared to cells from non-cryopreserved tissues. In summary, we demonstrated for the first time that puma somatic tissues subjected to cryopreservation are viable and maintain tissue integrity, featuring minimal changes after warming. Although viable somatic cells are obtained from these tissues, they undergo alterations in their metabolism and mitochondrial membrane potential. Improvements in the conservation conditions of somatic samples are needed to increase the quality of somatic tissue banks in this species.
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Affiliation(s)
| | - Alana Azevedo Borges
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
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Maria da Silva A, Pereira AG, Brasil AV, Macedo LB, Souza-Junior J, Bezerra de Moura CE, Pereira AF, Franco de Oliveira M, Comizzoli P, Silva AR. Influence of freezing techniques and glycerol-based cryoprotectant combinations on the survival of testicular tissues from adult collared peccaries. Theriogenology 2021; 167:111-119. [PMID: 33813051 DOI: 10.1016/j.theriogenology.2021.03.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 03/16/2021] [Accepted: 03/16/2021] [Indexed: 01/23/2023]
Abstract
The objective of the study was to evaluate the effects of different cryopreservation techniques including glycerol-based cryoprotectant combinations on the structure and viability of testicular tissues from adult collared peccaries. Tissue biopsies (3.0 mm³) from 5 different individuals were allocated to 10 different groups: fresh control; slow freezing (SF), conventional vitrification (CV), or solid-surface vitrification (SSV); each of them using three different combinations of cryoprotectants [dimethyl sulfoxide (DMSO) + ethylene glycol (EG); DMSO + Glycerol; and EG + Glycerol]. After thawing/warming, samples were evaluated for histomorphology, viability, proliferative capacity potential, and DNA integrity. Most effective preservation of testicular histomorphology was achieved using SF and CV with DMSO + EG. However, the use of glycerol-based cryoprotectant combinations increased the occurrence of tubular cell swelling, tubular cell loss and shrinkage from the basal membrane. Cell viability was comparable among cryopreservation methods and cryoprotectant combinations. Regarding cell proliferative capacity, the use of SF with EG + Glycerol and SSV with DMSO + Glycerol impaired the conservation of spermatogonia proliferative potential compared to other treatments. Moreover, CV with DMSO + EG was better than SF with EG + Glycerol for Sertoli cell proliferation potential. Regarding DNA integrity, less damage occurred when using SF with DMSO + EG while more fragmentations were observed when using CV with EG + Glycerol or DMSO + Glycerol as well as SSV with EG + Glycerol or DMSO + Glycerol. In sum, SF and CV appeared to be the most suitable methods for the cryopreservation of adult peccary testicular tissues. Additionally, the use of glycerol-based cryoprotectant combinations did not improve testicular tissues preservation with DMSO + EG being the most efficient option.
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Affiliation(s)
- Andréia Maria da Silva
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid - UFERSA, Mossoró, RN, Brazil
| | - Ana Gloria Pereira
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid - UFERSA, Mossoró, RN, Brazil
| | - Andreza Vieira Brasil
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid - UFERSA, Mossoró, RN, Brazil
| | | | - João Souza-Junior
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid - UFERSA, Mossoró, RN, Brazil
| | | | | | | | - Pierre Comizzoli
- Smithsonian Conservation Biology Institute, National Zoological Park, Veterinary Hospital, Washington, DC, USA
| | - Alexandre Rodrigues Silva
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid - UFERSA, Mossoró, RN, Brazil.
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Jeronimo Moreira SS, Maria da Silva A, Paz Souza AL, Gurgel Praxedes EC, Freire de Souza Junior JB, Pereira AF, Silva AR. Cryopreservation of Spix's yellow-toothed cavy epididymal sperm using Tris- and coconut water-based extenders supplemented with egg yolk or Aloe vera. Cryobiology 2021; 99:40-45. [PMID: 33508264 DOI: 10.1016/j.cryobiol.2021.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 01/20/2021] [Accepted: 01/22/2021] [Indexed: 11/15/2022]
Abstract
Addressing the establishment of biobanks for the conservation of wild hystricomorph rodents' germplasm, we verified the effects of different extenders and distinct concentrations of non-permeant cryoprotectants on the sperm parameters of Spix's yellow-toothed cavies. Nine testis-epididymis complexes were used for sperm collection by retrograde washing using Tris or a powdered coconut water extender (ACP®-116c). Spermatozoa were diluted and frozen with the same extenders supplemented with egg yolk or Aloe vera at a 10% or 20% concentration. After recovery and cryopreservation, all samples were evaluated for sperm kinetic parameters, morphology, membrane integrity, osmotic response, and sperm-binding capability using an egg yolk perivitelline membrane assay. After recovery, no differences were observed between Tris and ACP®-116c that provided 515.4 × 106 sperm/mL and 561.6 × 106 sperm/mL, presenting >65% motile sperm, respectively. After cryopreservation, most effective preservation of sperm kinetic parameters (68.1 ± 5.9% motile sperm) and membrane integrity (48.2 ± 7.4%) was provided by Tris extender supplemented with 10% egg yolk. However, both extenders supplemented with any concentration of egg yolk or Aloe vera presented similar preservation of osmotic response and sperm-binding ability after cryopreservation. In summary, we suggest the use of a Tris extender supplemented of 10% egg yolk for cryopreservation of Spix's yellow-toothed cavy epidydimal sperm.
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Affiliation(s)
| | - Andreia Maria da Silva
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid, Mossoro-RN, Brazil
| | - Ana Liza Paz Souza
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid, Mossoro-RN, Brazil
| | | | | | | | - Alexandre Rodrigues Silva
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid, Mossoro-RN, Brazil.
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Soares WNC, Lira GPO, Santos CS, Dias GN, Pimenta AS, Pereira AF, Benício LDM, Rodrigues GSO, Amora SSA, Alves ND, Feijó FMC. Pyroligneous acid from Mimosa tenuiflora and Eucalyptus urograndis as an antimicrobial in dairy goats. J Appl Microbiol 2021; 131:604-614. [PMID: 33342017 DOI: 10.1111/jam.14977] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/09/2020] [Accepted: 12/16/2020] [Indexed: 11/28/2022]
Abstract
AIMS To evaluate the applicability of the Mimosa tenuiflora and Eucalyptus urograndis pyroligneous acids (PAs) as alternative antiseptics in dairy goats. METHODS AND RESULTS Cytotoxicity was evaluated in vitro using bacteria, as well as in vivo using goats, and the influence of PAs on the physicochemical parameters of fresh milk were examined. The cytotoxicity of PAs was evaluated in terms of morphology, cell viability and metabolic activity of goat tegumentary cells. The PA of M. tenuiflora had results similar to those of 2% iodine. For the in vitro tests, strains of Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa were used with the well technique, demonstrating inhibition halos greater than 9 mm. In the in vivo test, 15 animals were used per phase of the experiment, and the plate counting technique showed that there was antiseptic action of both extracts, with emphasis on the M. tenuiflora PA. Physicochemical analysis of the milk showed that neither PAs interfered with its physical-chemical parameters. CONCLUSIONS The PA of M. tenuiflora presented potential as an alternative antiseptic in dairy goats. SIGNIFICANCE AND IMPACT OF THE STUDY This study demonstrates the use of PA as an antimicrobial agent in animals.
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Affiliation(s)
- W N C Soares
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of the Semi-Arid Region, Mossoró, Rio Grande do Norte, Brazil
| | - G P O Lira
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-arid Region, UFERSA, Mossoró, RN, Brazil
| | - C S Santos
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of the Semi-Arid Region, Mossoró, Rio Grande do Norte, Brazil
| | - G N Dias
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of the Semi-Arid Region, Mossoró, Rio Grande do Norte, Brazil
| | - A S Pimenta
- Forest Engineering, Master Program in Forest Sciences, Agricultural Sciences Unit, Agricultural School of Jundiaí, Federal University of Rio Grande do Norte, UFRN, Jundiai, RN, Brazil
| | - A F Pereira
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-arid Region, UFERSA, Mossoró, RN, Brazil
| | - L D M Benício
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of the Semi-Arid Region, Mossoró, Rio Grande do Norte, Brazil
| | - G S O Rodrigues
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of the Semi-Arid Region, Mossoró, Rio Grande do Norte, Brazil
| | - S S A Amora
- Laboratory of Food Tecnology, Center of Agrarian Sciences, Federal Rural University of Semi-arid Region, Mossoró, Rio Grande do Norte, Brazil
| | - N D Alves
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of the Semi-Arid Region, Mossoró, Rio Grande do Norte, Brazil
| | - F M C Feijó
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural University of the Semi-Arid Region, Mossoró, Rio Grande do Norte, Brazil
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Silva MB, De Queiroz Neta LB, Oliveira LRMD, Nascimento MBD, Aquino LVCD, Borges AA, Santos MVDO, Pereira AF. CONSERVAÇÃO DE TECIDOS SOMÁTICOS DE CATETOS (Pecari tajacu LINNAEUS, 1758) SUBMETIDO A DIFERENTES CONDIÇÕES DE ARMAZENAMENTO. HOLOS 2020. [DOI: 10.15628/holos.2020.9862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
O objetivo foi avaliar a influência da conservação [refrigeração a 5°C e vitrificação] sobre tecidos somáticos de catetos. O experimento foi dividido em duas etapas. Na primeira etapa, fragmentos foram refrigerados por 24 (R-24) e 48 h (R-48) e comparados com amostras não refrigeradas (C). Na segunda etapa, fragmentos foram refrigerados por 24 (RV-24) e 48 h (RV-48) seguidos da vitrificação, e comparados com fragmentos apenas vitrificados (V). Na primeira etapa, embora a espessura da epiderme não tenha sido afetada pela refrigeração por 48 h, a espessura da derme foi reduzida tanto no período de 24 h quanto de 48 h. Além disso, enquanto uma redução de fibroblastos dérmicos foi apenas evidenciada no grupo R-48, o aumento de halos perinucleares da epiderme foi observado em todos os grupos refrigerados. Na segunda etapa, tanto a espessura da epiderme, quanto da derme e total foram afetadas pela vitrificação após a refrigeração por 48 h. Além disso, enquanto uma redução de fibroblastos dérmicos foi apenas evidenciada no grupo RV-48, o aumento de halos perinucleares da epiderme foi observado em todos os grupos vitrificados. Assim, independente do período de armazenamento, a refrigeração afetou a qualidade dos tecidos somáticos de catetos, sendo esses efeitos acentuados quando os fragmentos foram refrigerados por 48 h e vitrificados. Portanto, sugere-se, quando necessário, o período de 24 h de refrigeração para amostras somáticas derivadas de catetos que irão ainda ser vitrificadas.
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Praxedes ÉA, Silva MB, Oliveira LRMD, Viana JVDS, Silva AR, Oliveira MFD, Pereira AF. Establishment, characterization, and cryopreservation of cell lines derived from red-rumped agouti (Dasyprocta leporina Linnaeus, 1758) - A study in a wild rodent. Cryobiology 2020; 98:63-72. [PMID: 33359644 DOI: 10.1016/j.cryobiol.2020.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 12/18/2022]
Abstract
Somatic cells can be used for rescuing wild mammals of ecological and economic importance, such as red-rumped agouti, through their application in advanced technologies. Thus, appropriate cell isolation, culture, and storage through cryopreservation can ensure the future safe use of these cells. We aimed to establish and evaluate the effects of culture time (second, fifth, and eighth passages) and cryopreservation on the morphology, viability, metabolism, proliferative activity, reactive oxygen species (ROS) levels, mitochondrial membrane potential (ΔΨm), and apoptosis on somatic cells derived from red-rumped agouti skin. Initially, we identified six dermal fibroblast lines by morphology, immunophenotyping, and karyotyping assays. In vitro culture after the second, fifth, and eighth passages, as well as the cryopreservation conditions used did not affect the metabolism or level of apoptosis. Nevertheless, cells in the fifth passage featured a reduction in proliferative activity and an increase in ROS levels when compared to second and eighth passage cells. Moreover, cryopreservation resulted in reduced ΔΨm when compared to non-cryopreserved cells. Additionally, cryopreserved cells showed a reduction in viability immediately after thawing; nevertheless, the viability of these cells was re-established after 11 days of in vitro culture and was similar to that of non-cryopreserved cells. In conclusion, we have shown that viable fibroblasts can be obtained from red-rumped agouti skin, featuring minimal changes after eight passages in in vitro culture systems. Additionally, adjustments to the cryopreservation protocol are necessary to reduce cellular oxidative stress caused by low temperatures.
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Affiliation(s)
- Érika Almeida Praxedes
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - Maria Bárbara Silva
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | | | - João Vitor da Silva Viana
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
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Pereira AF, Lino JA, Alves BWF, Lisboa MRP, Pontes RB, Leite CAVG, Nogueira RB, Lima-Júnior RCP, Vale ML. Amifostine protects from the peripheral sensory neuropathy induced by oxaliplatin in mice. Braz J Med Biol Res 2020; 53:e10263. [PMID: 32965323 PMCID: PMC7510240 DOI: 10.1590/1414-431x202010263] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 08/08/2020] [Indexed: 12/18/2022] Open
Abstract
Sensory neuropathy is a dose-limiting side effect of oxaliplatin-based cancer treatment. This study investigated the antinociceptive effect of amifostine and its potential neuroprotective mechanisms on the oxaliplatin-related peripheral sensory neuropathy in mice. Oxaliplatin (1 mg/kg) was injected intravenously in Swiss albino male mice twice a week (total of nine injections), while amifostine (1, 5, 25, 50, and 100 mg/kg) was administered subcutaneously 30 min before oxaliplatin. Mechanical and thermal nociceptive tests were performed once a week for 49 days. Additionally, c-Fos, nitrotyrosine, and activating transcription factor 3 (ATF3) immunoexpressions were assessed in the dorsal root ganglia. In all doses, amifostine prevented the development of mechanical hyperalgesia and thermal allodynia induced by oxaliplatin (P<0.05). Amifostine at the dose of 25 mg/kg provided the best protection (P<0.05). Moreover, amifostine protected against neuronal hyperactivation, nitrosative stress, and neuronal damage in the dorsal root ganglia, detected by the reduced expression of c-Fos, nitrotyrosine, and ATF3 (P<0.05 vs the oxaliplatin-treated group). In conclusion, amifostine reduced the nociception induced by oxaliplatin in mice, suggesting the possible use of amifostine for the management of oxaliplatin-induced peripheral sensory neuropathy.
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Affiliation(s)
- A F Pereira
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - J A Lino
- Departamento de Medicina Clínica, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - B W F Alves
- Departamento de Morfologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - M R P Lisboa
- Departamento de Morfologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - R B Pontes
- Departamento de Fisioterapia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - C A V G Leite
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - R B Nogueira
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - R C P Lima-Júnior
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
| | - M L Vale
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil.,Departamento de Morfologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil
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Pereira de Oliveira Lira G, Borges AA, Barbosa do Nascimento M, Costa de Aquino LV, Franco de Oliveira M, Silva AR, Pereira AF. Cryopreservation of Collared Peccary (Pecari tajacu Linnaeus, 1758) Somatic Cells is Improved by Sucrose and High Concentrations of Fetal Bovine Serum. Cryo Letters 2020; 41:272-280. [PMID: 33988665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
BACKGROUND The formation of somatic cell banks is affected by, amongst other factors, the cryoprotectant solution used. The selection of an effective solution, therefore, is a primary parameter. OBJECTIVE We optimized the cryoprotectant used for collared peccary somatic cell cryopreservation. MATERIALS AND METHODS We categorized cells into different groups based on their cryopreservation and evaluated the morphology, viability, proliferative activity, metabolism, and oxidative stress. One group was cryopreserved in 10% DMSO with 10% fetal bovine serum (DMSO-10FBS), and another with 50% FBS (DMSO-50FBS). The cryopreservation of both groups included the presence of 0.2 M sucrose (DMSO-SUC-10FBS and DMSO-SUC-50FBS). Non-cryopreserved cells and cells cryopreserved with 10% DMSO (DMSO) supplemented with 0.2 M sucrose (DMSO-SUC) were used as controls. RESULTS There was no difference observed in morphology or viability among the groups. Proliferative activity was reduced in DMSO-10FBS when compared to controls. Although cryopreservation reduced metabolism, no difference was observed among solutions. A lower level of reactive oxygen species was observed in cells of DMSO-SUC-50FBS when compared to other cryoprotectants. Only cells of DMSO-SUC-50FBS had mitochondrial potential similar to non-cryopreserved cells. CONCLUSION 10% DMSO supplemented with 50% FBS and 0.2 M SUC was observed to be the most efficient cryoprotectant for preserving collared peccary somatic cells.
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Affiliation(s)
| | - A A Borges
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - M Barbosa do Nascimento
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - L V Costa de Aquino
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | | | - A R Silva
- Laboratory of Animal Germplasm Conservation, UFERSA, Mossoro, RN, Brazil
| | - A F Pereira
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil.
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Abstract
Cellular reprogramming mainly involves induction of reactivation of genes responsible for nuclear plasticity, a process that can be performed in vitro through production of cloned embryos by somatic cell nuclear transfer or by induction of cells into the pluripotent state through exogenous transcription factor expression. While these techniques are already well known and utilized in mice and rats, their application in other rodent species would be greatly beneficial, especially for conservation purposes. Within the diverse Rodentia order, wild species stand out as they play an important role in balancing the ecosystem by facilitating seed diversion, soil aeration, and consequently, reforestation. Many of these species are currently approaching extinction, and application of techniques, such as nuclear reprogramming, aimed at species conservation and multiplication and to produce stem cells is of interest. Thus, in this review, we aimed to present the evolution and success of nuclear reprogramming, mainly highlighting its potential application for the conservation of wild rodents.
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Affiliation(s)
- Érika Almeida Praxedes
- Laboratory of Animal Biotechnology, Federal Rural University of the Semi-Arid Region, Mossoró, Brazil
| | - Fabiana Fernandes Bressan
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga, Brazil
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Borges AA, Lira GPDO, Nascimento LE, Santos MVDO, Oliveira MFD, Silva AR, Pereira AF. Isolation, characterization, and cryopreservation of collared peccary skin-derived fibroblast cell lines. PeerJ 2020; 8:e9136. [PMID: 32547858 PMCID: PMC7275682 DOI: 10.7717/peerj.9136] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 04/15/2020] [Indexed: 12/11/2022] Open
Abstract
Background Biobanking of cell lines is a promising tool of support for wildlife conservation. In particular, the ability to preserve fibroblast cell lines derived from collared peccaries is of significance as these wild mammals are unique to the Americas and play a large role in maintaining the ecosystem. We identified collared peccary fibroblasts by immunofluorescence and evaluated their morphology, growth and adherence capacity. Further, we monitored the viability and metabolic activity of the fibroblasts to determine the effects of passage number and cryopreservation on establishment of cell lines. Methods Skin biopsies were collected from the peripheral ear region from five adult animals in captivity. Initially, cells were isolated from fragments and cultured in the Dulbecco's modified Eagle medium supplemented with 10% fetal bovine serum and 2% antibiotic-antimycotic solution under a controlled atmosphere (38.5 °C, 5% CO2). We evaluated the maintenance of primary cells for morphology, adherence capacity of explants, explants in subconfluence, cell growth and absence of contamination. Moreover, we identified the fibroblast cells by immunofluorescence. Additionally, to evaluate the influence of the number of passages (first, third and tenth passage) and cryopreservation on establishment of cell lines, fibroblasts were analysed for the viability, metabolic activity, population doubling time (PDT), levels of reactive oxygen species (ROS), and mitochondrial membrane potential (ΔΨm). Results All explants (20/20) adhered to the dish in 2.4 days ± 0.5 with growth around the explants in 4.6 days ± 0.7, and subconfluence was observed within 7.8 days ± 1.0. Moreover, by morphology and immunocytochemistry analyses, cells were identified as fibroblasts which presented oval nuclei, a fusiform shape and positive vimentin staining. No contamination was observed after culture without antibiotics and antifungals for 30 days. While there was no difference observed for cell viability after the passages (first vs. third: P = 0.98; first vs. tenth: P = 0.76; third vs. tenth: P = 0.85), metabolic activity was found to be reduced in the tenth passage (23.2 ± 12.1%) when compared to that in the first and third passage (100.0 ± 24.4%, P = 0.006). Moreover, the cryopreservation did not influence the viability (P = 0.11), metabolic activity (P = 0.77), or PDT (P = 0.11). Nevertheless, a greater ΔΨm (P = 0.0001) was observed for the cryopreserved cells (2.12 ± 0.14) when compared to that in the non-cryopreserved cells (1.00 ± 0.05). Additionally, the cryopreserved cells showed greater levels of intracellular ROS after thawing (1.69 ± 0.38 vs. 1.00 ± 0.22, P = 0.04). Conclusions This study is the first report on isolation, characterization and cryopreservation of fibroblasts from collared peccaries. We showed that adherent cultures were efficient for obtaining fibroblasts, which can be used as donor cells for nuclei for species cloning and other applications.
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Affiliation(s)
- Alana Azevedo Borges
- Laboratory of Animal Biotechnology, Universidade Federal Rural do Semi-Árido, Mossoró, Rio Grande do Norte, Brazil
| | | | - Lucas Emanuel Nascimento
- Laboratory of Animal Biotechnology, Universidade Federal Rural do Semi-Árido, Mossoró, Rio Grande do Norte, Brazil
| | | | - Moacir Franco De Oliveira
- Laboratory of Applied Animal Morphophysiology, Universidade Federal Rural do Semi-Árido, Mossoró, Rio Grande do Norte, Brazil
| | - Alexandre Rodrigues Silva
- Laboratory of Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, Mossoró, Rio Grande do Norte, Brazil
| | - Alexsandra Fernandes Pereira
- Laboratory of Animal Biotechnology, Universidade Federal Rural do Semi-Árido, Mossoró, Rio Grande do Norte, Brazil
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Silva AMD, Pereira AF, Comizzoli P, Silva AR. Cryopreservation and Culture of Testicular Tissues: An Essential Tool for Biodiversity Preservation. Biopreserv Biobank 2020; 18:235-243. [PMID: 32282240 DOI: 10.1089/bio.2020.0010] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Systematic cryo-banking of reproductive tissues could enhance reproductive management and ensure sustainability of rare mammalian genotypes. Testicular tissues contain a vast number of germ cells, including at early stages (spermatogonia and spermatocytes), that can potentially develop into viable spermatozoa after grafting or culture in vitro, and the resulting sperm cells then can be used for assisted reproductive techniques. The objective of this review was to describe current advances, limitations, and perspectives related to the use of testicular tissue preservation as a strategy for the conservation of male fertility. Testes can be obtained from mature or prepubertal individuals, immediately postmortem or by orchiectomy, but testicular biopsies could also be an alternative to collect samples from living individuals. Testicular fragments can be then cryopreserved by using slow or ultra-rapid freezing, or even vitrification methods. The composition of cryopreservation media can vary according to species-specific characteristics, especially regarding the cryoprotectant type and concentration. Finally, spermatozoa have been usually obtained after xenografting of testicular fragments into severely immunodeficient mice, while this method still has to be optimized after in vitro culture conditions.
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Affiliation(s)
- Andréia Maria da Silva
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid, Mossoró, Brazil
| | | | - Pierre Comizzoli
- Smithsonian Conservation Biology Institute, National Zoological Park, Veterinary Hospital, Washington, District of Columbia, USA
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Costa HDS, Câmara FV, Bezerra Vinicius FF, Bezerra de Moura CE, Fernandes Pereira A, Rodrigues Silva A, Miglino MA, Franco de Oliveira M. Embryonic/Fetal Development, Placentation and Glycosaminoglycans in the Female Reproductive Tract and Placenta. ACTA SCI VET 2020. [DOI: 10.22456/1679-9216.100339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background: Fetal attachments, placentation and embryonic development have been widely discussed in rodents such as agoutis and cavies, as well as research on glycosaminoglycans (GAGs) in rats and rabbits. Moreover, studies on buffalo, cattle and sheep are described in ruminants, and work has also been reported in sheep with GAGs in placentoma. However, further studies are needed in this regard, since there are reports of economic losses associated with reproductive failures described for cattle such as changes in the chorion and allantois, and in sheep in which changes between the transition from vitelline to allantois circulation have been discussed. Review: In relation to embryonic development, detailed studies have been described in rodents such as rats (12 days old), desert mouse (15 days old) and agoutis at 30 days. Macroscopic structures such as the cephalic region, nose, optic vesicle, cervical curvature, thoracic and pelvic limbs were observed, as well as microscopic structures such as the pituitary, lung, heart, brain cavity, liver, retina, and ossification regions. There are reports of buffalo and cattle studies in ruminants describing early embryonic development. However, the research in the case of sheep is limited, meaning there is only the ultrasound examination, such as gestational diagnosis and morphometric measurement of the embryonic vesicle. Still, studies with umbilical funicular and placental development of sheep with different gestational ages can be highlighted. Regarding extraembryonic annexes, four important structures which contribute to embryonic maintenance have been reported. These are called the chorion, amnion, allantois and yolk sac, respectively, and are responsible for originating the placenta, embryonic protection, collecting metabolic waste and early embryonic nutrition. In addition, correlating the annexes gives rise to the placentation process, which were described two models; the first is transient, called chorioviteline, and the second is called chorioallantoid, which represents the definitive model. Allied to the gestational process, the importance of glycosaminoglycans (GAGs) and proteoglycans are worth mentioning, as they are essential components of the extracellular matrix. They are related in the implantation process, tissue organization during gestation, and also in placental angiogenesis, as described in ruminants (i.e. involved in the vascular growth that accompanies the development of the placenta), which in turn causes an increase in blood flow in this organ, and constitutes a determining factor for fetal development. Conclusion: Such studies regarding the embryonic development of ruminants are still limited to sonographic description and some information is only available in the context of extraembryonic membranes. For glycosaminoglycans, chondroitin sulfate, dermatan sulfate, heparan sulfate and hyaluronic acid are identified in the reproductive tract and placenta. We intend to produce important information for the reproductive and sanitary management of ruminants with the information in this article, providing data to stimulate new studies aiming to minimize the occurrence of embryonic death and economic losses. In addition, further studies on GAGs are needed to better understand their true correlation with gestation, so they can intercede through supplementation and minimize reproductive losses.
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da Silva AM, Bezerra LGP, Praxedes ECG, Moreira SSJ, de Souza CMP, de Oliveira MF, Pereira AF, Comizzoli P, Silva AR. Combination of intracellular cryoprotectants preserves the structure and the cells proliferative capacity potential of adult collared peccary testicular tissue subjected to solid surface vitrification. Cryobiology 2019; 91:53-60. [DOI: 10.1016/j.cryobiol.2019.10.199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/22/2019] [Accepted: 10/28/2019] [Indexed: 12/11/2022]
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Santos MVDO, Silva AM, Praxedes ÉA, Borges AA, Teles Filho ACDA, Souza‐Junior JBF, Bertini LM, Silva AR, Pereira AF. Antioxidant effects of the essential oil of
Syzygium aromaticum
on bovine epididymal spermatozoa. Andrologia 2019; 51:e13448. [DOI: 10.1111/and.13448] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 08/01/2019] [Accepted: 09/13/2019] [Indexed: 11/29/2022] Open
Affiliation(s)
| | - Andréia Maria Silva
- Laboratory of Animal Germplasm Conservation Federal Rural University of Semi‐Arid Mossoro Brazil
| | | | - Alana Azevedo Borges
- Laboratory of Animal Biotechnology Federal Rural University of Semi‐Arid Mossoro Brazil
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Borges AA, Santos MVDO, Nascimento LE, Lira GPDO, Praxedes ÉA, Oliveira MFD, Silva AR, Pereira AF. Production of collared peccary (Pecari tajacu Linnaeus, 1758) parthenogenic embryos following different oocyte chemical activation and in vitro maturation conditions. Theriogenology 2019; 142:320-327. [PMID: 31711691 DOI: 10.1016/j.theriogenology.2019.10.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/13/2019] [Accepted: 10/13/2019] [Indexed: 02/09/2023]
Abstract
To optimize the protocols for assisted reproductive techniques (ARTs) in collared peccary (Pecari tajacu Linnaeus, 1758), we evaluated various conditions for oocyte in vitro maturation (IVM) and chemical activation. Initially, we assessed the IVM rates, cumulus-oocyte complex (COC) quality, and oocyte morphometry in the absence or presence of epidermal growth factor (EGF). There was no difference between the COCs matured in absence or presence of EGF for the expansion of cumulus cells (97.6% ± 1.2 vs. 100% ± 0.0), presence of first polar body (65.9% ± 1.2 vs. 70.5% ± 1.8), nuclear status in second metaphase (62.5% ± 11.6 vs. 68.4% ± 4.9), cytoplasmic maturation (100.0% ± 0.7 vs. 75.0% ± 0.7), reactive oxygen species levels (0.5 ± 0.2 vs. 0.3 ± 0.1), and mitochondrial membrane potential (1.1 ± 0.2 vs. 1.1 ± 0.1). However, the zona pellucida thickness of matured COCs was reduced in the presence of EGF. Thus, the EGF group was used for further experiments. The oocytes were artificially activated with ionomycin and four secondary activator combinations [6-dimethylaminopurine (6D), 6D and cytochalasin B (6D + CB), cycloheximide (CHX), and CHX and CB (CHX + CB)]. The effect of immature COCs based on cumulus cell layers and cytoplasm homogeneity (GI and GII or GIII COCs) on embryonic development and quality was evaluated. There was no difference in the cleavage rates among the groups of secondary activators. The cleavage rates of embryos derived from GI/GII and GIII COCs were greater than 72.2% and 25.0%, respectively. Moreover, treatment with CHX showed a reduction in the cleavage rate of embryos derived from GIII COCs when compared to the cleavage rate of embryos derived from GI/GII COCs (P < 0.05). Nevertheless, higher rates of blastocyst/total GI and GII COCs were observed in the 6D group (27.6% ± 0.3) compared to CHX group (6.9% ± 0.3). Additionally, only 6D treatment resulted in the production of embryos derived from GIII COCs (25.0% ± 0.2). The percentage of the ICM/total cell ratio was also greater in blastocysts derived from 6D (42.5% ± 19.0), 6D + CB (37.9% ± 21.9), and CHX + CB (43.8% ± 19.6) groups when compared to CHX (3.6% ± 0.1) group. Thus, the combination of ionomycin and 6D could produce collared peccary embryos by activation of both GI/GII COCs and GIII COCs. These optimized IVM conditions using EGF and chemical activation using ionomycin and 6D in collared peccaries form the first steps for establishing ARTs to conserve this species.
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Affiliation(s)
- Alana Azevedo Borges
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
| | | | | | | | - Érika Almeida Praxedes
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
| | - Moacir Franco de Oliveira
- Laboratory of Applied Animal Morphophysiology, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
| | - Alexandre Rodrigues Silva
- Laboratory of Animal Germplasm Conservation, Federal Rural University of Semi-Arid, Mossoro, RN, Brazil
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Praxedes ÉA, Oliveira LRMD, Silva MB, Borges AA, Santos MVDO, Silva HVR, Oliveira MFD, Silva AR, Pereira AF. Effects of cryopreservation techniques on the preservation of ear skin – An alternative approach to conservation of jaguar, Panthera onca (Linnaeus, 1758). Cryobiology 2019; 88:15-22. [DOI: 10.1016/j.cryobiol.2019.04.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 03/13/2019] [Accepted: 04/24/2019] [Indexed: 11/26/2022]
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Santos MVDO, Nascimento LE, Praxedes ÉA, Borges AA, Silva AR, Bertini LM, Pereira AF. Syzygium aromaticum essential oil supplementation during in vitro bovine oocyte maturation improves parthenogenetic embryonic development. Theriogenology 2019; 128:74-80. [DOI: 10.1016/j.theriogenology.2019.01.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 11/21/2018] [Accepted: 01/31/2019] [Indexed: 12/18/2022]
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Bezerra LGP, Souza ALP, Silva HVR, Vasconcelos FR, Moura ADAA, Pereira AF, Oliveira MFD, Silva AR. Ultrastructural description of fresh and frozen/thawed sperm derived from collared peccaries (
Pecari tajacu
Linnaeus, 1,758). Microsc Res Tech 2018; 81:1301-1309. [DOI: 10.1002/jemt.23138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/04/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Luana Grasiele Pereira Bezerra
- Laboratory of Animal Germplasm Conservation, Universidade Federal Rural do Semiárido – UFERSA Rio Grande do Norte Brazil
| | - Ana Liza Paz Souza
- Post‐Graduation Program in Biotechnology, Universidade Federal do Ceará – UFC Ceará Brazil
| | | | | | | | - Alexsandra Fernandes Pereira
- Laboratory of Animal Germplasm Conservation, Universidade Federal Rural do Semiárido – UFERSA Rio Grande do Norte Brazil
| | - Moacir Franco de Oliveira
- Laboratory of Animal Germplasm Conservation, Universidade Federal Rural do Semiárido – UFERSA Rio Grande do Norte Brazil
| | - Alexandre Rodrigues Silva
- Laboratory of Animal Germplasm Conservation, Universidade Federal Rural do Semiárido – UFERSA Rio Grande do Norte Brazil
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Santos MVDO, De Queiroz Neta LB, Borges AA, Silva MB, Pereira AF. INFLUÊNCIA DO CORPO LÚTEO SOBRE A RECUPERAÇÃO DE OÓCITOS IMATUROS BOVINOS DERIVADOS DE FÊMEAS POST-MORTEM. HOLOS 2017. [DOI: 10.15628/holos.2017.5556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
O objetivo do presente trabalho foi avaliar a influência do corpo lúteo (CL), glândula endócrina temporária presente nos ovários, sobre a recuperação de oócitos imaturos bovinos derivados de ovários de fêmeas post-mortem. Para tanto, as seguintes comparações foram realizadas: fêmeas não prenhes com CL vs. fêmeas não prenhes sem CL; fêmeas prenhes com CL vs. fêmeas não prenhes com CL; e ovário com CL vs. ovário sem CL. Assim, ovários foram obtidos em abatedouro e os oócitos recuperados por aspiração folicular. A qualidade oocitária foi avaliada por morfologia convencional e ensaio de azul cresil brilhante (ACB), sendo quantificados oócitos viáveis e não viáveis para cada técnica. Todos os dados foram analisados pelo teste de Fisher (P<0,05). Assim, avaliando fêmeas ou ovários com ou sem CL, nenhuma diferença foi observada nos parâmetros avaliados. Contudo, um maior percentual de oócitos viáveis por morfologia foi obtido de fêmeas prenhes com CL, quando comparado às fêmeas não prenhes com CL. Em conclusão, pode-se afirmar que parâmetros de recuperação e qualidade oocitária não são afetados pela presença de CL, exceto em doadoras prenhes que apresentaram oócitos de melhor qualidade.
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Pereira AF, Borges P, Fontbonne A, Cardoso L, Gaivão I, Martins-Bessa A. The Comet assay for detection of DNA damage in canine sperm. Reprod Domest Anim 2017; 52:1149-1152. [DOI: 10.1111/rda.13042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 06/28/2017] [Indexed: 11/27/2022]
Affiliation(s)
- AF Pereira
- University of Trás-os-Montes e Alto Douro (UTAD); Vila Real Portugal
| | - P Borges
- Centre d'Etude en Reproduction des Carnivores (CERCA); Ecole Nationale Vétérinaire d'Alfort (ENVA); Maisons-Alfort France
| | - A Fontbonne
- Centre d'Etude en Reproduction des Carnivores (CERCA); Ecole Nationale Vétérinaire d'Alfort (ENVA); Maisons-Alfort France
| | - L Cardoso
- Department of Veterinary Sciences; School of Agrarian and Veterinary Sciences; UTAD; Vila Real Portugal
| | - I Gaivão
- Animal and Veterinary Research Center (CECAV); UTAD; Vila Real Portugal
| | - A Martins-Bessa
- Department of Veterinary Sciences; School of Agrarian and Veterinary Sciences; UTAD; Vila Real Portugal
- Animal and Veterinary Research Center (CECAV); UTAD; Vila Real Portugal
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Resende AFC, Pereira AF, Moreira TP, Patrício PSO, Fialho SL, Cunha GMF, Silva-Cunha A, Magalhães JT, Silva GR. PLGA Implants containing vancomycin and dexamethasone: development, characterization and bactericidal effects. Pharmazie 2016; 71:439-446. [PMID: 29442030 DOI: 10.1691/ph.2016.6009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Post-operative endophthalmitis is an infection and an inflammation of the eye following a surgical procedure. Its treatment is based on drug injections into the eye. However, this treatment can lead to ocular complications. Intraocular implants could substitute the conventional therapy. Poly(lactic-co-glycolic acid) (PLGA) implants comprising on vancomycin and dexamethasone were evaluated as drug delivery system to treat endophthalmitis after cataract surgery. Implants were characterized by drug content uniformity, Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), Wide Angle X-ray Scattering (WAXS), Scanning Electron Microscopy (SEM) and in vitro drug release. The bactericidal effect of vancomycin, eluted from the implants, was demonstrated against Staphylococcus aureus and Staphylococcus epidermidis. The drugs were uniformly distributed in the polymer. The analytical techniques revealed the chemical integrity of the drugs incorporated into the polymer and the modification of dexamethasone semi-crystalline nature. Drugs were controlled released from implants; and the eluted vancomycin showed bactericidal effects. In conclusion, PLGA implants containing vancomycin and dexamethasone may represent a therapeutic alternative to treat post-operative endophthalmitis.
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Abstract
The development of predictive mathematical models can contribute to a deeper understanding of the specific stages of bone mechanobiology and the process by which bone adapts to mechanical forces. The objective of this work was to predict, with spatial accuracy, cortical bone adaptation to mechanical load, in order to better understand the mechanical cues that might be driving adaptation. The axial tibial loading model was used to trigger cortical bone adaptation in C57BL/6 mice and provide relevant biological and biomechanical information. A method for mapping cortical thickness in the mouse tibia diaphysis was developed, allowing for a thorough spatial description of where bone adaptation occurs. Poroelastic finite-element (FE) models were used to determine the structural response of the tibia upon axial loading and interstitial fluid velocity as the mechanical stimulus. FE models were coupled with mechanobiological governing equations, which accounted for non-static loads and assumed that bone responds instantly to local mechanical cues in an on–off manner. The presented formulation was able to simulate the areas of adaptation and accurately reproduce the distributions of cortical thickening observed in the experimental data with a statistically significant positive correlation (Kendall's τ rank coefficient τ = 0.51, p < 0.001). This work demonstrates that computational models can spatially predict cortical bone mechanoadaptation to a time variant stimulus. Such models could be used in the design of more efficient loading protocols and drug therapies that target the relevant physiological mechanisms.
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Affiliation(s)
- A F Pereira
- Department of Bioengineering, Imperial College London, London, UK
| | - B Javaheri
- Comparative Biomedical Sciences, Royal Veterinary College, London, UK
| | - A A Pitsillides
- Comparative Biomedical Sciences, Royal Veterinary College, London, UK
| | - S J Shefelbine
- Department of Mechanical and Industrial Engineering and Department of Bioengineering, Northeastern University, Boston, MA, USA
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Costa CADS, Borges AA, Santos MVDO, Neta LBDQ, Pereira AF. Tools for evaluation of the somatic cells and tissues after cryopreservation in
mammals. A Review. Revista Brasileira de Higiene e Sanidade Animal 2016. [DOI: 10.5935/1981-2965.20160067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Pereira AF, Alcântara Neto AS, Albuquerque ES, Luciano MCS, Teixeira DIA, Freitas VJF, Melo LM. Goat oocyte production by standard or one-shot FSH treatments and quantitative analysis of transcripts for EGF ligands and its receptor after in vitro maturation. Reprod Domest Anim 2011; 47:244-51. [PMID: 21923881 DOI: 10.1111/j.1439-0531.2011.01845.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Hormonal ovarian stimulation may affect the success of embryo production by regulating transcripts in recovered cumulus-oocyte complexes (COCs). Here, in parallel to morphological classification and in vitro maturation (IVM) rate analysis, we investigated the expression of epidermal growth factor (EGF) and its receptor (EGFR) in oocytes and cumulus cells from goat COCs recovered by laparoscopy after standard [multi-dose follicle-stimulating hormone (FSH)] or one-shot (single dose FSH plus eCG) treatments. No differences were observed among the number of recovered and morphologically graded COCs or the IVM rates for both gonadotropic treatments. However, the standard protocol produced COCs with higher EGFR expression in the cumulus cells than the one-shot treatment. Additionally, EGF mRNA levels were less than EGFR mRNA levels, and they did not differ among COCs from both treatments. However, during maturation, the EGF transcripts increased in oocytes derived only from the standard protocol. Interestingly, IVM strikingly increased EGFR expression in oocytes and cumulus cells but not in oocytes that fail in first polar body extrusion, irrespective of hormonal treatment. These results appear to be related to the resumption of meiosis and suggest that EGF may act through the cumulus cells or directly on the oocyte receptor.
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Affiliation(s)
- A F Pereira
- Faculdade de Veterinária, Universidade Estadual do Ceará, Fortaleza-CE, Brazil
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Rosa MS, Vieira RB, Pereira AF, Dutra PM, Lopes AH. Platelet-Activating Factor (PAF) Modulates Peritoneal Mouse Macrophage Infection by Leishmania amazonensis. Curr Microbiol 2001; 43:33-7. [PMID: 11375661 DOI: 10.1007/s002840010256] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2000] [Accepted: 12/15/2000] [Indexed: 10/26/2022]
Abstract
The effects of platelet-activating factor (PAF) on the infection of peritoneal mouse macrophages by Leishmania amazonensis were investigated. Prior to the infection, the parasites and/or the macrophages were treated with PAF and/or one of the following modulators: WEB 2086 (PAF antagonist), and the modulators of protein kinase C, phorbol-12-myristate-13-acetate (PMA), and sphingosine. The infection was inhibited when the macrophages or both the parasites and the macrophages were treated with PAF, but stimulated by PAF-treated parasites. WEB 2086 abrogated PAF effects in both systems. The infection was stimulated when the macrophages were treated with sphingosine plus PAF, but inhibited when the macrophages were treated with sphingosine and the parasites with sphingosine plus PAF. The infection was inhibited by sphingosine-treated parasites, either in the presence or in the absence of PAF. Leishmania amazonensis-macrophage infection was inhibited by PMA in all systems tested.
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Affiliation(s)
- M S Rosa
- Instituto de Microbiologia Prof. Paulo de Góes, Universidade Federal do Rio de Janeiro, Cidade Universitária, IIha do Fundão, 21941-590, Rio de Janeiro, R.J., Brazil
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