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Ambrósio CE, Orlandin JR, Oliveira VC, Motta LCB, Pinto PAF, Pereira VM, Padoveze LR, Karam RG, Pinheiro ADO. Potential application of aminiotic stem cells in veterinary medicine. Anim Reprod 2020; 16:24-30. [PMID: 33299475 PMCID: PMC7720931 DOI: 10.21451/1984-3143-ar2018-00124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In regenerative medicine stem cell biology has become one of the most interesting and more often studied subject. The amniotic membrane is the innermost layer of the fetal membranes and is considered a potential tool to treat many pathologies. It is used because it can be collected from discarded fetal material and is a rich source of stem cells with high proliferation and plasticity ratio capable of proliferating and differentiate in vitro. We propose to elucidate the characteristics and potencial clinical application of cells derived of amniotic membrane in veterinary medicine.
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Roballo KCS, Souza AF, Lara VM, Pinheiro AO, Gomes IDS, Karam RG, Martins DDS, Machado LC, Ambrósio CE. Canine fetus immune system at late development. Anim Reprod 2019; 16:328-331. [PMID: 33224294 PMCID: PMC7673595 DOI: 10.21451/1984-3143-ar2019-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The immune system is mainly responsible for protecting the organism against agents that may interfere in its homeostasis. Thus, understand how this system develops and operates is very important, for create new therapies to assist this system in its operation, such as its failure. In domestic dogs, few studies show how actually occurs the development, maturation and functioning of the immune system. Therefore, this study demonstrates the development and possible activation of it on dog fetus from late gestational period by in situ and microscopic analyzes.
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Roballo KCS, da Silveira JC, Bressan FF, de Souza AF, Pereira VM, Porras JEP, Rós FA, Pulz LH, Strefezzi RDF, Martins DDS, Meirelles FV, Ambrósio CE. Neurons-derived extracellular vesicles promote neural differentiation of ADSCs: a model to prevent peripheral nerve degeneration. Sci Rep 2019; 9:11213. [PMID: 31371742 PMCID: PMC6671995 DOI: 10.1038/s41598-019-47229-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 07/12/2019] [Indexed: 12/13/2022] Open
Abstract
Potential mechanisms involved in neural differentiation of adipocyte derived stem cells (ADSCs) are still unclear. In the present study, extracellular vesicles (EVs) were tested as a potential mechanism involved in the neuronal differentiation of stem cells. In order to address this, ADSCs and neurons (BRC) were established in primary culture and co-culture at three timepoints. Furthermore, we evaluated protein and transcript levels of differentiated ADSCs from the same timepoints, to confirm phenotype change to neuronal linage. Importantly, neuron-derived EVs cargo and EVs originated from co-culture were analyzed and tested in terms of function, such as gene expression and microRNA levels related to the adult neurogenesis process. Ideal neuron-like cells were identified and, therefore, we speculated the in vivo function of these cells in acute sciatic nerve injury. Overall, our data demonstrated that ADSCs in indirect contact with neurons differentiated into neuron-like cells. Neuron-derived EVs appear to play an important role in this process carrying SNAP25, miR-132 and miR-9. Additionally, in vivo neuron-like cells helped in microenvironment modulation probably preventing peripheral nerve injury degeneration. Consequently, our findings provide new insight of future methods of ADSC induction into neuronal linage to be applied in peripheral nerve (PN) injury.
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Pieri NCG, Mançanares ACF, de Souza AF, Fernandes H, Diaza AMG, Bressan FF, Roballo KCS, Casals JB, Binelli M, Ambrósio CE, Dos Santos Martins D. Xenotransplantation of canine spermatogonial stem cells (cSSCs) regulated by FSH promotes spermatogenesis in infertile mice. Stem Cell Res Ther 2019; 10:135. [PMID: 31109365 PMCID: PMC6528206 DOI: 10.1186/s13287-019-1250-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 04/27/2019] [Accepted: 04/30/2019] [Indexed: 01/15/2023] Open
Abstract
Background Xenotransplantation of spermatogonial stem cells (SSCs) has become a popular topic in various research fields because manipulating these cells can provide insights into the mechanisms associated with germ cell lines and the entire spermatogenesis process; moreover, these cells can be used in several biotechnology applications. To achieve successful xenotransplantation, the in vitro microenvironment in which SSCs are cultured should be an ideal microenvironment for self-renewal and similar to the in vivo testicular microenvironment. The age of the donor, the correct spermatogenesis cycle, and the quality of the donor tissue are also important. Although cell culture-related factors, such as the in vitro supplementation of hormonal factors, are known to promote successful xenotransplantation in mice, little is known about the influence of these factors on SSCs in vitro or in vivo in other mammalian species, such as dogs (Canis lupus familiaris). In this context, the goals of this study were to test the effect of follicle-stimulating hormone (FSH) on canine spermatogonial stem cell (cSSC) cultures since this hormone is related to the glial cell-derived neurotrophic factor (GDNF) signaling pathway, which is responsible for the self-renewal and maintenance of these cells in vivo, and to investigate the microenvironment of the SSC culture after FSH supplementation. Additionally, in vivo analyses of transplanted FSH-supplemented cSSCs in the testes of infertile mice were performed to assess the capacity of cSSCs to develop, maintain, and restore spermatogenesis. Methods SSCs from canine prepubertal testes (aged 3 months) were cultured in vitro in the presence of FSH (10 IU L−1). GFRA1 transcript expression was detected to confirm the spermatogonia population in culture and the effect of FSH on these cells. The protein and transcript levels of late germ cell markers (GFRA1, DAZL, STRA8, PLZF, and CD49f) and a pluripotency marker (OCT4) were detected at 72 and 120 h to confirm the cSSC phenotype. In vivo experiments were performed by transplanting GFP+ cSSCs into infertile mice, and a 10-week follow-up was performed. Histological and immunofluorescence analyses were performed to confirm the repopulation capacity after cSSC xenotransplantation in the testis. Results Supplementation with FSH in cell culture increased the number of cSSCs positive for GFRA1. The cSSCs were also positive for the pluripotency and early germline marker OCT4 and the late germline markers PLZF, DAZL, C-kit, and GFRA-1. The in vivo experiments showed that the cSSCs xenotransplanted into infertile mouse testes were able to repopulate germline cells in the seminiferous tubules of mice. Conclusions In conclusion, our results showed for the first time that the treatment of cSSC cultures with FSH can promote in vitro self-renewal, increase the population of germline cells, and possibly influence the success of spermatogenesis in infertile mice in vivo.
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de Oliveira VC, Moreira GSA, Bressan FF, Gomes Mariano Junior C, Roballo KCS, Charpentier M, Concordet JP, Meirelles FV, Ambrósio CE. Edition of TFAM gene by CRISPR/Cas9 technology in bovine model. PLoS One 2019; 14:e0213376. [PMID: 30845180 PMCID: PMC6405117 DOI: 10.1371/journal.pone.0213376] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 02/19/2019] [Indexed: 11/24/2022] Open
Abstract
The mitochondrial transcription factor A (TFAM) is a mitochondrial DNA (mtDNA) binding protein essential for the initiation of transcription and genome maintenance. Recently it was demonstrated that the primary role of TFAM is to maintain the integrity of mtDNA and that it is a key regulator of mtDNA copy number. It was also shown that TFAM plays a central role in the mtDNA stress-mediated inflammatory response. In our study, we proposed to evaluate the possibility of editing the TFAM gene by CRISPR/Cas9 technology in bovine fibroblasts, as TFAM regulates the replication specificity of mtDNA. We further attempted to maintain these cells in culture post edition in a medium supplemented with uridine and pyruvate to mimic Rho zero cells that are capable of surviving without mtDNA, because it is known that the TFAM gene is lethal in knockout mice and chicken. Moreover, we evaluated the effects of TFAM modification on mtDNA copy number. The CRISPR gRNA was designed to target exon 1 of the bovine TFAM gene and subsequently cloned. Fibroblasts were transfected with Cas9 and control plasmids. After 24 h of transfection, cells were analyzed by flow cytometry to evaluate the efficiency of transfection. The site directed-mutation frequency was assessed by T7 endonuclease assay, and cell clones were analyzed for mtDNA copy number by Sanger DNA sequencing. We achieved transfection efficiency of 51.3%. We selected 23 successfully transformed clones for further analysis, and seven of these exhibited directed mutations at the CRISPR/Cas9 targeted site. Moreover, we also found a decrease in mtDNA copy number in the gene edited clones compared to that in the controls. These TFAM gene mutant cells were viable in culture when supplemented with uridine and pyruvate. We conclude that this CRISPR/Cas9 design was efficient, resulting in seven heterozygous mutant clones and opening up the possibility to use these mutant cell lines as a model system to elucidate the role of TFAM in the maintenance of mtDNA integrity.
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Schwarzbach SV, Melo CF, Xavier PLP, Roballo KC, Cordeiro YG, Ambrósio CE, Fukumasu H, Carregaro AB. Morphine, but not methadone, inhibits microsomal prostaglandin E synthase-1 and prostaglandin-endoperoxide synthase 2 in lipopolysaccharide-stimulated horse synoviocytes. Biochimie 2019; 160:28-33. [PMID: 30763639 DOI: 10.1016/j.biochi.2019.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 02/08/2019] [Indexed: 11/15/2022]
Abstract
Osteoarthritis (OA) is one of the main locomotor disorders in horses. Although nonsteroidal anti-inflammatory drugs are the first-line treatment for OA, opioids could also be used. In previous studies, opioids showed promising anti-inflammatory and analgesic effects. In this study, we aimed to investigate the effects of two opioids (morphine and methadone) against inflammation in lipopolysaccharide (LPS)-stimulated synoviocytes by analyzing microsomal prostaglandin E synthase-1 (mPGES-1) and prostaglandin-endoperoxide synthase 2 (PTGS2) expression. Synoviocytes were obtained from the joints at the distal limbs of dead animals. The cytotoxic effects of LPS, morphine, and methadone were investigated by using a cell viability assay with crystal violet dye. Synoviocytes were treated with LPS, LPS plus morphine, or LPS plus methadone for 3, 6, and 12 h, and mPGES-1 and PTGS2 expression was measured using real-time polymerase chain reaction. LPS, and morphine did not affect the viability of synoviocytes, even at high concentrations. LPS treatment increased mPGES-1 and PTGS2 expression, whereas morphine inhibited the increase in mPGES-1 and PTGS2 expression in LPS-stimulated synoviocytes. Methadone did not inhibit mPGES-1 or PTGS2 expression. These results suggest that morphine may exhibit anti-inflammatory effect; therefore, it might be beneficial for the treatment of OA.
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Ambrósio CE, Orlandin JR, Oliveira VC, Motta LCB, Pinto PAF, Pereira VM, Padoveze LR, Karam RG, Pinheiro ADO. Potential application of aminiotic stem cells in veterinary medicine. Anim Reprod 2019. [DOI: 10.21451/1984-3143-ar2018-0124] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Costa Gerger RPD, Souza Ribeiro ED, Zago FC, Aguiar LHD, Rodriguez-Villamil P, Ongaratto FL, Ambrósio CE, Miglino MA, Rodrigues JL, Forell F, Bertolini LR, Bertolini M. Effects of fusion-activation interval and embryo aggregation on in vitro and in vivo development of bovine cloned embryos. Res Vet Sci 2019; 123:91-98. [PMID: 30597478 DOI: 10.1016/j.rvsc.2018.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 11/16/2018] [Accepted: 12/13/2018] [Indexed: 11/27/2022]
Abstract
Nuclear reprogramming in somatic cell cloning is one of the key factors for proper development, with variations in the protocol appearing to improve cloning efficiency. This study aimed to determine the effects of two fusion-activation intervals and the aggregation of bovine cloned embryos on subsequent in vitro and in vivo development. Zygotes produced by handmade cloning were exposed to two fusion-activation intervals (2 h or 4 h), and then cultured in microwells either individually (1 × 100%) or after aggregation of two structures (2 × 100%). Zona-intact oocytes and zona-free oocytes and hemi-oocytes were used as parthenote controls under the same fusion-activation intervals. Day-7 cloned blastocysts were transferred to synchronous recipients. Cleavage (Day 2), blastocyst (Day 7) and pregnancy (Day 30) rates were compared by the χ2 test (P < .05). Extending fusion-activation interval from 2 to 4 h reduced cleavage (91.0 vs. 74.4%) but not blastocyst (34.8 vs. 42.0%) rates. On a microwell basis, cloned embryo aggregation (2 × 100%) increased cleavage (91.5% vs. 74.4%) and blastocyst (46.0% vs. 31.3%) rates compared to controls (1 × 100%), but did not improve the overall embryo production efficiency on Day 7 (23.0% vs. 31.3%), on a per reconstructed embryo basis, respectively. Treatments had no effects on in vitro developmental kinetics, embryo quality, and in vivo development. In summary, the fusion-activation interval and/or the aggregation of cloned bovine embryos did not affect cloning efficiency based on the in vitro development to the blastocyst stage and on pregnancy outcome.
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Zomer HD, Roballo KC, Lessa TB, Bressan FF, Gonçalves NN, Meirelles FV, Trentin AG, Ambrósio CE. Distinct features of rabbit and human adipose-derived mesenchymal stem cells: implications for biotechnology and translational research. STEM CELLS AND CLONING-ADVANCES AND APPLICATIONS 2018; 11:43-54. [PMID: 30425533 PMCID: PMC6204872 DOI: 10.2147/sccaa.s175749] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Introduction Owing to their similarity with humans, rabbits are useful for multiple applications in biotechnology and translational research from basic to preclinical studies. In this sense, mesenchymal stem cells (MSCs) are known for their therapeutic potential and promising future in regenerative medicine. As many studies have been using rabbit adipose-derived MSCs (ASCs) as a model of human ASCs (hASCs), it is fundamental to compare their characteristics and understand how distinct features could affect the translation to human medicine. Objective The aim of this study was to comparatively characterize rabbit ASCs (rASCs) and hASCs to further uses in biotechnology and translational studies. Materials and methods rASCs and hASCs were isolated and characterized by their immunophenotype, differentiation potential, proliferative profile, and nuclear stability in vitro. Results and discussion Both ASCs presented differentiation potential to osteocytes, chondrocytes, and adipocytes and shared similar immunophenotype expression to CD105+, CD34−, and CD45−, but rabbit cells expressed significantly lower CD73 and CD90 than human cells. In addition, rASCs presented greater clonogenic potential and proliferation rate than hASCs but no difference in nuclear alterations. Conclusion The distinct features of rASCs and hASCs can positively or negatively affect their use for different applications in biotechnology (such as cell reprogramming) and translational studies (such as cell transplantation, tissue engineering, and pharmacokinetics). Nevertheless, the particularities between rabbit and human MSCs should not prevent rabbit use in preclinical models, but care should be taken to interpret results and properly translate animal findings to medicine.
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Cabral LG, Facciotti PR, Teixeira DG, Araújo KPC, Martins DDS, Rici REG, Ambrósio CE, Miglino MA, Mariana ANB. Comportamento da artéria ovárica em éguas sem raça definida (Equus caballus, Linnaeus, 1758). ACTA SCI VET 2018. [DOI: 10.22456/1679-9216.16128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Dória RGS, Freitas SHD, Hayasaka YDB, Hage MCFNS, Strefezzi RDF, Carregaro AB, Reginato GM, Ambrósio CE, Müller AF. Evaluation of polyamide surgical mesh as an abdominal ventral implant in rabbits. Acta Cir Bras 2018; 33:454-461. [DOI: 10.1590/s0102-865020180050000008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 04/25/2018] [Indexed: 11/21/2022] Open
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Gaiad TP, Oliveira MX, Lobo AR, Libório LR, Pinto PAF, Fernandes DC, Santos AP, Ambrósio CE, Machado ASD. Low-intensity training provokes adaptive extracellular matrix turnover of a muscular dystrophy model. J Exerc Rehabil 2017; 13:693-703. [PMID: 29326902 PMCID: PMC5747205 DOI: 10.12965/jer.1735094.547] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 12/05/2017] [Indexed: 11/22/2022] Open
Abstract
Recommendations of therapeutic exercise in Duchenne muscular dystrophy are still controversial. The hypothesis that a low-intensity training (LIT) protocol leads to muscle adaptations on mdx mice model was tested. Dystrophic male mice with 8 weeks old were separated in exercised (mdxE, n= 8) and sedentary (mdxC, n= 8) groups. Wild-type mice were used as control (WT, n= 8) group. Exercised group underwent a LIT protocol (9 m/min, 30 min, 3 days/wk, 60 days) on a horizontal treadmill. At day 60 all animals were analyzed regarding parameters of markers of muscle lesion and extracellular matrix turnover of muscle tissue by collagens fibers on tibial anterior muscle. Histomorphometry attested that centrally located nuclei fibers and the coefficient of variance of minimal Feret’s diameter was similar in mdxE and mdxC groups (P= 1.000) and both groups presented higher mean values than WT group (P< 0.001). Fraction area of collagen fibers of mdxE group was lower than mdxC group (P= 0,027) and similar to WT group (P= 0,751). Intramuscular area of Col3 of the mdxE group was higher than mdxC and WT groups (P<0.001). Intramuscular area of Col1 on the mdxE group was similar to the mdxC group (P= 1.000) and both groups were higher than WT group (P< 0.001). LIT protocol had not influenced muscle injuries resulting from the dystrophin-deficiency membrane fragility. Although, LIT had provoked adaptations on extracellular matrix bringing higher elastic feature to dystrophic muscle tissue.
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Feitosa MLT, Sarmento CAP, Bocabello RZ, Beltrão-Braga PCB, Pignatari GC, Giglio RF, Miglino MA, Orlandin JR, Ambrósio CE. Transplantation of human immature dental pulp stem cell in dogs with chronic spinal cord injury. Acta Cir Bras 2017; 32:540-549. [PMID: 28793038 DOI: 10.1590/s0102-865020170070000005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 06/05/2017] [Indexed: 12/15/2022] Open
Abstract
Purpose: To investigate the therapeutic potential of human immature dental pulp stem cells in the treatment of chronic spinal cord injury in dogs. Methods: Three dogs of different breeds with chronic SCI were presented as animal clinical cases. Human immature dental pulp stem cells were injected at three points into the spinal cord, and the animals were evaluated by limb function and magnetic resonance imaging (MRI) pre and post-operative. Results: There was significant improvement from the limb function evaluated by Olby Scale, though it was not supported by the imaging data provided by MRI and clinical sign and evaluation. Conclusion: Human dental pulp stem cell therapy presents promising clinical results in dogs with chronic spinal cord injuries, if used in association with physical therapy.
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Machado LC, Roballo KCS, Cury FS, Ambrósio CE. Female reproductive system morphology of crab-eating fox (Cerdocyon thous) and cryopreservation of genetic material for animal germplasm bank enrichment. Anat Histol Embryol 2017; 46:539-546. [PMID: 28913836 DOI: 10.1111/ahe.12306] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 08/11/2017] [Indexed: 11/30/2022]
Abstract
The sprawl of the urbanization and road network process without building ecological corridors contributes to the high mortality rates and a threat to the population decline of wild species such as the crab-eating fox. A strategy for the ex situ conservation is the study of the reproductive biology of the species and cryopreservation of their genetic heritage through the formation of an animal germplasm bank. This research is in accordance with the principles adopted by Brazilian College of Animal Experimentation. Reproductive systems of Cerdocyon thous females (n = 7) were examined macroscopically and microscopically by histological techniques and scanning electron microscopy. Gross features showed the shape of the ovaries was similar to a bean, and the elongated oviducts lengths were between 5 and 8 cm, with body of the uterus (3 cm) with long and narrow uterine horns (9-11 cm). The cervix was as a single annular conformation carrying out communication between the uterus and the vagina. The vagina has lengthened and circular muscle and the vulva with dense anatomical conformation with a quite pronounced clitoris. In addition, with regard to the establishment of a cell line (fibroblasts) for the gene bank enrichment, cells showed a low clonogenic capacity, especially when compared to domestic dogs, which can be explained by "in vitro" environment, age and diet of the animal. However, it was possible to create a bank of limited cell number. This study had morphological and preservationist character and aimed to help at long term in the conservation of wild animal's genetic resources.
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Orlandin JR, Ambrósio CE, Lara VM. Glial scar-modulation as therapeutic tool in spinal cord injury in animal models. Acta Cir Bras 2017; 32:168-174. [PMID: 28300871 DOI: 10.1590/s0102-865020170209] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 01/20/2017] [Indexed: 12/13/2022] Open
Abstract
PURPOSE Spinal Cord injury represents, in veterinary medicine, most of the neurological attendances and may result in permanent disability, death or euthanasia. Due to inflammation resulting from trauma, it originates the glial scar, which is a cell interaction complex system. Its function is to preserve the healthy circuits, however, it creates a physical and molecular barrier that prevents cell migration and restricts the neuroregeneration ability. METHODS This review aims to present innovations in the scene of treatment of spinal cord injury, approaching cell therapy, administration of enzyme, anti-inflammatory, and other active principles capable of modulating the inflammatory response, resulting in glial scar reduction and subsequent functional improvement of animals. RESULTS Some innovative therapies as cell therapy, administration of enzymes, immunosuppressant or other drugs cause the modulation of inflammatory response proved to be a promising tool for the reduction of gliosis. CONCLUSION Those tools promise to reduce gliosis and promote locomotor recovery in animals with spinal cord injury.
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Gerger R, Rossetto R, Ribeiro E, Ortigari I, Zago FC, Aguiar L, Costa U, Lopes RFF, Ambrósio CE, Miglino MA, Rodrigues JL, Forell F, Bertolini LR, Bertolini M. Impact of cumulative gain in expertise on the efficiency of handmade cloning in cattle. Theriogenology 2017; 95:24-32. [DOI: 10.1016/j.theriogenology.2017.02.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 02/13/2017] [Accepted: 02/27/2017] [Indexed: 10/20/2022]
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Marinho DF, Oliveira ECPD, Araújo JADS, Pinto IF, Lima HSD, Moraes WP, Ambrósio CE, Morini AC. Avaliação da transmissibilidade ultrassônica do gel fitoterápico de Copaifera duckei Dwyer. PESQUISA VETERINÁRIA BRASILEIRA 2017. [DOI: 10.1590/s0100-736x2017000500015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
RESUMO: Esse estudo teve por objetivo avaliar o potencial de transmissibilidade ultrassônica de um gel fitoterápico de copaíba da espécie Copaifera duckei Dwyer na concentração de 10%. A pesquisa foi registrada junto ao Sistema Brasileiro de Biodiversidade. O gel fitoterápico de Copaifera duckei 10% foi manipulado de acordo diretrizes da Farmacopéia Brasileira e testado em um aparelho de Ultrassom (US) operado na faixa de 1 MHz. Como grupos controle foram selecionados a água destilada e o gel hidroalcoólico. A análise ocorreu de forma qualitativa e quantitativa através do modelo proposto na literatura. O US foi programado para modos de corrente pulsado/contínuo e testados nas intensidades (0,2/0,4/0,6/0,8/1,0W/cm2), em 1mim/cm2. Os dados receberam tratamento estatístico pelo software BioEstat 5.3 e foi admitido um nível de significância de ≥0,05. No modo contínuo e na intensidade de 0.2W/cm2 o gel foi considerado “Bom transmissor”, na intensidade de 0.4 W/cm2 e 0.6W/cm2 um “Transmissor moderado” e nas intensidades de 0.8W/cm2 e 1.0W/cm2 um “Transmissor pobre”. Concluiu-se que o gel de C. duckei 10% não atenuou as ondas de US em nenhum modo ou intensidade testado. E pode assim ser adicionado a esse para tratamentos sendo considerado transmissor bom ou moderado de acordo com a intensidade do US.
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Vidane AS, Pinheiro AO, Casals JB, Passarelli D, Hage MCFNS, Bueno RS, Martins DS, Ambrósio CE. Transplantation of amniotic membrane-derived multipotent cells ameliorates and delays the progression of chronic kidney disease in cats. Reprod Domest Anim 2016; 52 Suppl 2:316-326. [DOI: 10.1111/rda.12846] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Cardoso MT, Pinheiro AO, Vidane AS, Casals JB, de Oliveira VC, Gonçalves N, Martins DS, Ambrósio CE. Characterization of teratogenic potential and gene expression in canine and feline amniotic membrane-derived stem cells. Reprod Domest Anim 2016; 52 Suppl 2:58-64. [PMID: 27774699 DOI: 10.1111/rda.12832] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The biosafety of innovative procedures that utilize stem cells in regenerative medicine has been addressed in several studies. Previous work has showed no tumour formation following the use of feline and human amniotic membrane-derived stem cells (AMSCs). In contrast, tumour formation was observed when canine AMSCs were utilized. These findings suggested that feline and human, but not canine, AMSCs are suitable for cell transplantation trials. This study aimed to further evaluate the feasibility of utilizing canine AMSCs for transplantation purposes as well as for felines. We tested teratoma formation following cell injection into BALB/c nude mice and then assessed expression of haematopoietic, mesenchymal, tumorigenic, pluripotency and cellular regulation markers using flow cytometry and qPCR. The use of canine AMSCs did not result in macroscopic tumour formation as determined 60 days after transplantation. The immunophenotypic characterization by flow cytometry revealed expression of mesenchymal markers (CD73 and CD90) and expression of the pluripotent marker OCT4 and SOX2. Quantitative PCR analysis revealed that there were no differences in the patterns of gene expression (CD34, CD73, OCT4, CD30 and P53) between canine and feline AMSCs, with the exception of the expression of SOX2 and CD90.
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Ercolin ACM, Roballo KCS, Casals JB, Pieri NCG, Souza AF, Barreto RDSN, Bressan FF, Feitosa MLT, Miglino MA, Meirelles FV, Ambrósio CE. Rabbit olfactory stem cells. Isolation protocol and characterization. Acta Cir Bras 2016; 31:59-66. [PMID: 26840357 DOI: 10.1590/s0102-865020160010000009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 12/20/2015] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To describe a new technique for isolation of a mesenchymal stem cells (MSCs) population from the olfactory mucosa in rabbits. METHODS Olfactory stem cells (OSCs) were retrieved from under the cribriform plate of the Ethmoid bone. Several assays were accomplished to characterize the cell population and attest its viability in vitro. The cells were submitted to flow cytometry with the antibodies CD34, CD45, CD73, CD79, CD90 and CD105 and also they were induced to differentiate in three lineages. Functional evaluation involved analysis of in vitro growth behavior, colony forming unit like fibroblasts (CFU-f) and cryopreservation response. Further transduction with Green Fluorescent Protein (GFP) was also performed. RESULTS The OSCs showed mesenchymal features, as positive response to CD34, CD73 and CD90 antibodies and plasticity. Additionally, these cells have high proliferated rate, and they could be cultured through many passages and kept the ability to proliferate and differentiate after cryopreservation. The positive response to the transduction signalizes the possibility of cellular tracking in vivo. This is a desirable feature in case those cells are used for pre-clinical trials. CONCLUSION The cells harvested were mesenchymal stem cells and the technique described is therefore efficient for rabbit olfactory stem cells isolation.
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Morini AC, Pieri NCG, Roballo KCS, Martins DS, Ambrósio CE, Morini Junior JC, Favaron PO, Minervino AHH, Pereira FVT, Miglino MA. Buffalo (Bubalus bubali
) Late Embryo and Foetus Development: A Morphological Analysis. Reprod Domest Anim 2016; 51:509-14. [DOI: 10.1111/rda.12712] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 04/26/2016] [Indexed: 01/06/2023]
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Justo M, Cury FS, de Godoy SHS, Fernandes AM, dos Santos Martins D, Ambrósio CE. Microbiological evaluation of anatomical organs submitted to glycerinization and freeze-drying techniques. TRANSLATIONAL RESEARCH IN ANATOMY 2016. [DOI: 10.1016/j.tria.2016.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Pinheiro AO, Cardoso MT, Vidane AS, Casals JB, Passarelli D, Alencar ALF, Sousa RLM, Fantinato-Neto P, Oliveira VC, Lara VM, Ambrósio CE. Controversial results of therapy with mesenchymal stem cells in the acute phase of canine distemper disease. GENETICS AND MOLECULAR RESEARCH 2016; 15:gmr8310. [PMID: 27323085 DOI: 10.4238/gmr.15028310] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Distemper disease is an infectious disease reported in several species of domestic and wild carnivores. The high mortality rate of animals infected with canine distemper virus (CDV) treated with currently available therapies has driven the study of new efficacious treatments. Mesenchymal stem cell (MSC)-based therapy is a promising therapeutic option for many degenerative, hereditary, and inflammatory diseases. Therefore, the aim of this study was to characterize stem cells derived from the canine fetal olfactory epithelium and to assess the systemic response of animals infected with CDV to symptomatic therapy and treatment with MSCs. Eight domestic mongrel dogs (N = 8) were divided into two groups: support group (SG) (N = 5) and support group + cell therapy (SGCT) (N = 3), which were monitored over 15 days. Blood samples were collected on days 0, 6, 9, 12, and 15 to assess blood count and serum biochemistry (urea, creatinine, alanine transferase, alkaline phosphatase, gamma-glutamyl transferase, total protein, albumin, and globulin), and urine samples were obtained on days 0 and 15 for urinary evaluation (urine I). The results showed a high mortality rate (SG = 4 and SGCT = 2), providing inadequate data on the clinical course of CDV infection. MSC therapy resulted in no significant improvement when administered during the acute phase of canine distemper disease, and a prevalence of animals with high mortality rate was found in both groups due to the severity of symptoms.
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Pieri N, Souza AF, Casals JB, Roballo K, Ambrósio CE, Martins DS. Comparative Development of Embryonic Age by Organogenesis in Domestic Dogs and Cats. Reprod Domest Anim 2015; 50:625-31. [PMID: 25990819 DOI: 10.1111/rda.12539] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 04/20/2015] [Indexed: 11/29/2022]
Abstract
The precise determination of the embryonic chronology is very important in reproductive biotechnologies, especially in estimating embryonic age. Thus, there is a need for greater knowledge and standardization for determining the chronology of embryonic development and functional morphology. We describe aspects of embryonic development in two domestic carnivores to add knowledge about organ peculiarities and for application in veterinary practice, in prenatal development and in the biotechnology fields. We found that the development of differential characteristics of embryonic organs occurs in the first trimester of pregnancy for both species. Thus, using the combination of the crown-rump length, macroscopic analysis and optical microscopy, it is possible to predict gestational age more precisely in animals that lack a defined breed and establish an embryonic pattern.
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Silva Filho OFD, Argôlo Neto NM, Carvalho MAMD, Carvalho YKD, Diniz ADN, Moura LDS, Ambrósio CE, Monteiro JM, Almeida HMD, Miglino MA, Alves JDJRP, Macedo KV, Rocha ARD, Feitosa MLT, Alves FR. Isolation and characterization of mesenchymal progenitors derived from the bone marrow of goats native from northeastern Brazil. Acta Cir Bras 2015; 29:478-84. [PMID: 25140588 DOI: 10.1590/s0102-86502014000800001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 06/11/2014] [Indexed: 12/30/2022] Open
Abstract
PURPOSE To characterize bone marrow progenitors cells grown in vitro, using native goats from northeastern Brazil as animal model. METHODS Ten northeastern Brazil native goats of both genders were used from the Piauí Federal University Agricultural Science Center's (UFPI) - Goat Farming Sector. Bone marrow aspirates where taken from the tibial ridge and seeded on culture plates for isolation, expansion and Flow Cytometry (expression markers - Oct-3/4, PCNA, Ck-Pan, Vimentina, Nanog). RESULTS Progenitor cells showed colonies characterized by the presence of cell pellets with fibroblastoid morphology. Cell confluence was taken after 14 days culture and the non-adherent mononuclear cell progressive reduction. After the first passage, 94.36% cell viability was observed, starting from 4.6 x 106 cell/mL initially seeded. Cells that went through flow cytometry showed positive expression for Oct-3/4, PCNA, Ck-Pan, Vimentina, and Nanog. CONCLUSIONS Bone marrow progenitor isolated of native goats from northeastern Brazil showed expression markers also seen in embryonic stem cells (Oct-3/4, Nanog), markers of cell proliferation (PCNA) and markers for mesenchymal cells (Vimentina and Ck-pan), which associated to morphological and culture growth features, suggest the existence of a mesenchymal stem cell (MSC) population in the goat bone marrow stromal cells studied.
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