7 results on '"Dutra GA"'
Search Results
2. Patient in Cardiorespiratory Arrest - Is it Possible to Perform Transcatheter Aortic Valve Implantation (TAVI) in this Scenario?
- Author
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Soeiro AM, Cardozo FA, Guimarães PO, Pereira MP, Souza PVR, Boros GAB, Veiga VC, Rojas SSO, Mangione FM, Cristóvão SAB, Dutra GA, Salman AA, Bettarello LEL, and Mangione JA
- Subjects
- Aortic Valve surgery, Humans, Treatment Outcome, Aortic Valve Stenosis surgery, Heart Valve Prosthesis, Heart Valve Prosthesis Implantation, Transcatheter Aortic Valve Replacement adverse effects
- Published
- 2021
- Full Text
- View/download PDF
3. Deficiency in proliferative, angiogenic, and LH receptors in the follicle wall: implications of season toward the anovulatory condition.
- Author
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Ishak GM, Dutra GA, Gastal GDA, Elcombe ME, Gastal MO, Park SB, Feugang JM, and Gastal EL
- Subjects
- Animals, ErbB Receptors genetics, ErbB Receptors metabolism, Estradiol genetics, Estradiol metabolism, Female, Gene Expression Regulation, Ki-67 Antigen genetics, Ki-67 Antigen metabolism, Luteinizing Hormone, Receptors, LH genetics, Receptors, Vascular Endothelial Growth Factor genetics, Receptors, Vascular Endothelial Growth Factor metabolism, bcl-2-Associated X Protein, Cell Proliferation physiology, Horses physiology, Neovascularization, Physiologic, Ovarian Follicle physiology, Ovulation physiology, Receptors, LH metabolism, Seasons
- Abstract
This study aimed to gain insight on the effect of different seasons of the year on the expression pattern of growth factor and hormone receptors involved in follicle development. A novel follicle wall biopsy technique was used to collect in vivo follicle wall layers (ie, granulosa, theca interna, and theca externa) and follicular fluid samples from growing dominant follicles, simultaneously and repeatedly, using the same mares during the spring anovulatory (SAN), spring ovulatory (SOV), summer (SU), and fall ovulatory (FOV) seasons. The immunofluorescent expression patterns of epidermal growth factor receptor (EGFR), Ki-67, vascular endothelial growth factor receptor (VEGFR), and LH receptor (LHR) were evaluated in each follicle wall layer, in addition to intrafollicular estradiol and nitric oxide (NO). Proliferative proteins (EGFR and Ki-67) were highly (P < 0.05-P < 0.001) expressed during the SOV season compared with the SAN and FOV seasons. Lower (P < 0.05-P < 0.001) expression of both proteins was observed during SU compared with the SOV season. The expression of VEGFR was greater (P < 0.05-P < 0.01) in the theca interna of dominant follicles during the SOV season compared with the SAN and SU seasons. Similarly, in the overall quantification, the VEGFR expression was greater (P < 0.001) during the SOV season compared with the SU and FOV seasons. A higher (P < 0.05) LHR expression was detected in the theca interna during the SOV season than the SAN season. Furthermore, a higher (P < 0.05-P < 0.001) expression of LHR was observed in the granulosa, theca interna, and in the overall quantification during the SOV season compared with the SU and FOV seasons. Intrafollicular NO concentration did not differ (P > 0.05) among different seasons of the year. The intrafollicular estradiol concentration was higher (P < 0.05) during the SU compared with the SAN season and higher (P < 0.05) during the FOV season compared with the SAN and SOV seasons. In conclusion, the synergistic effect of lower expression of proliferative protein, angiogenic, and LH receptors in at least some of the layers of the follicle wall seems to trigger dominant follicles toward the anovulation process during the spring and fall transitional seasons., (Copyright © 2019 Elsevier Inc. All rights reserved.)
- Published
- 2020
- Full Text
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4. Soul care in the hospital nursing context: an analysis based on Transpersonal Caring.
- Author
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Nunes ECDA, Santos HDS, Dutra GA, Cunha JXPD, and Szylit R
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- Brazil, Hospitals, Humans, Nursing, Team, Nursing Care, Spirituality
- Abstract
Objective: To unveil spirituality in the care process of nursing professionals in the hospital context under the lens of Transpersonal Caring., Method: A descriptive-exploratory study implementing a qualitative approach conducted with professionals from the nursing team in a general hospital in Bahia, using a semi-structured interview submitted to the content analysis technique and analyzed from the perspective of the Theory of Transpersonal Caring theoretical framework., Results: There were 16 professionals who participated. It was found that the nursing team perceives the patient and family's demand for spiritual care, and sometimes even has experiences and suggestions for interventions, especially those which cultivate faith and spirituality, but this does not happen with most of these professionals who demonstrate difficulties, unpreparedness and fear of taking on such care responsibility., Conclusion: There is a need to develop better interaction/spiritual care skills by nursing professionals in the challenging context of the search for meaning, faith and hope mobilized by the disease experience. The Systematization of Spiritual Nursing Care and Transpersonal Caring stand out as appropriate devices, which provide consistent subsidies for undertaking spiritual care.
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- 2020
- Full Text
- View/download PDF
5. Transition to the ovulatory season in mares: An investigation of antral follicle receptor gene expression in vivo.
- Author
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Ishak GMA, Dutra GA, Gastal GDA, Gastal MO, Feugang JM, and Gastal EL
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- Animals, Female, Horses, Ovarian Follicle cytology, Proto-Oncogene Proteins c-bcl-2 biosynthesis, ErbB Receptors biosynthesis, Gene Expression Regulation physiology, Ovarian Follicle metabolism, Ovulation physiology, Receptors, LH biosynthesis, Seasons
- Abstract
The inability to obtain in vivo samples of antral follicle wall layers without removing the ovaries or sacrificing the animals has limited more in-depth studies on folliculogenesis. In this study, a novel ultrasound-guided follicle wall biopsy (FWB) technique was used to obtain in vivo follicle wall layers and follicular fluid samples of growing antral follicles. The expression of proliferative, hormonal, angiogenic, and pro-/antiapoptotic receptors and proteins in the follicular wall among three follicle classes were compared during the spring transitional anovulatory (SAN) and spring ovulatory (SOV) seasons in mares. The main findings observed in the granulosa, theca interna, and/or all follicle layers during the SOV season compared with the SAN season were (a) small-sized follicles (10-14 mm) had greater epidermal growth factor receptor (EGFR) and Bcl-2 expression; (b) medium-sized follicles during the expected deviation/selection diameter (20-24 mm) had greater expression of EGFR, Ki-67, luteinizing hormone receptor (LHR), and Bcl-2; and (c) dominant follicles (30-34 mm) had greater EGFR, Ki-67, vascular endothelial growth factor, LHR, and Bcl-2 expression. Estradiol related receptor alpha expression and intrafollicular estradiol concentration increased, along with an increase in follicle diameter in both seasons. In this study, the application of the FWB technique allowed a direct comparison of different receptors' expression among follicles in different stages of development and between two seasons using the same individuals, without jeopardizing their ovarian function. The successful utilization of the FWB technique and the mare as an experimental animal offer a great combination for future folliculogenesis studies on mechanisms of follicle selection, development, and ovulation in different species, including women., (© 2019 Wiley Periodicals, Inc.)
- Published
- 2019
- Full Text
- View/download PDF
6. Seasonal variation in equine follicular fluid proteome.
- Author
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Dutra GA, Ishak GM, Pechanova O, Pechan T, Peterson DG, Jacob JCF, Willard ST, Ryan PL, Gastal EL, and Feugang JM
- Subjects
- Animals, Female, Proteins chemistry, Proteins isolation & purification, Proteomics, Reproduction, Seasons, Follicular Fluid metabolism, Horses metabolism, Proteins metabolism
- Abstract
Background: Proteomic studies of follicular fluid (FF) exist for several species, including the horse; however, the seasonal influence on FF proteome has not been explored in livestock. The application of high-throughput proteomics of FF in horse has the potential to identify seasonal variations of proteins involved in follicle and oocyte growth., Methods: This study (i) profiles the proteomes of equine FF collected from dominant growing follicles during the spring anovulatory season (SAN), and spring (SOV), summer (SUM), and fall (FOV) ovulatory seasons; and (ii) identifies season-dependent regulatory networks and associated key proteins., Results: Regardless of season, a total of 90 proteins were identified in FF, corresponding to 63, 72, 69, and 78 proteins detected in the SAN, SOV, SUM, and FOV seasons, respectively. Fifty-two proteins were common to all seasons, a total of 13 were unique to either season, and 25 were shared between two seasons or more. Protein-to-protein interaction (PPI) analysis indicated the likely critical roles of plasminogen in the SAN season, the prothrombin/plasminogen combination in SUM, and plasminogen/complement C3 in both SOV and FOV seasons. The apolipoprotein A1 appeared crucial in all seasons. The present findings show that FF proteome of SUM differs from other seasons, with FF having high fluidity (low viscosity)., Conclusions: The balance between the FF contents in prothrombin, plasminogen, and coagulation factor XII proteins favoring FF fluidity may be crucial at the peak of the ovulatory season (SUM) and may explain the reported lower incidence of hemorrhagic anovulatory follicles during the SUM season.
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- 2019
- Full Text
- View/download PDF
7. In vivo antral follicle wall biopsy: a new research technique to study ovarian function at the cellular and molecular levels.
- Author
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Ishak GM, Bashir ST, Dutra GA, Gastal GDA, Gastal MO, Cavinder CA, Feugang JM, and Gastal EL
- Subjects
- Animals, Biomarkers metabolism, Biopsy instrumentation, Biopsy methods, Female, Follicular Fluid metabolism, Immunohistochemistry, Ovary pathology, Ovary physiopathology, Ovary surgery, Biopsy veterinary, Horses, Ovarian Follicle surgery
- Abstract
Background: In vivo studies involving molecular markers of the follicle wall associated with follicular fluid (FF) milieu are crucial for a better understanding of follicle dynamics. The inability to obtain in vivo samples of antral follicle wall (granulosa and theca cells) without jeopardizing ovarian function has restricted advancement in knowledge of folliculogenesis in several species. The purpose of this study in mares was to develop and validate a novel, minimally invasive in vivo technique for simultaneous collection of follicle wall biopsy (FWB) and FF samples, and repeated collection from the same individual, during different stages of antral follicle development. We hypothesized that the in vivo FWB technique provides samples that maintain the normal histological tissue structure of the follicle wall layers, offers sufficient material for various cellular and molecular techniques, and allows simultaneous retrieval of FF., Methods: In Experiment 1 (ex vivo), each follicle was sampled using two techniques: biopsy forceps and scalpel blade (control). In Experiment 2 (in vivo), FWB and FF samples from 10-, 20-, and 30-mm follicles were repeatedly and simultaneously obtained through transvaginal ultrasound-guided technique., Results: In Experiment 1, the thickness of granulosa, theca interna, and theca externa layers was not influenced (P > 0.05) by the harvesting techniques. In Experiment 2, the overall recovery rates of FWB and FF samples were 97 and 100%, respectively. However, the success rate of obtaining samples with all layers of the follicle wall and clear FF varied according to follicle size. The expression of luteinizing hormone receptor (LHR) was mostly confined in the theca interna layer, with the estradiol-related receptor alpha (ERRα) in the granulosa and theca interna layers. The 30-mm follicle group had greater (P < 0.05) LHR expression in the theca interna and ERRα in the granulosa layer compared to the other groups. The overall expression of LHR and ERRα, and the intrafollicular estradiol were higher (P < 0.05 - P < 0.0001) in the 30-mm follicle group., Conclusion: The in vivo technique developed in this study can be repeatedly and simultaneously used to provide sufficient FWB and FF samples for various cellular and molecular studies without jeopardizing the ovarian function, and has the potential to be translated to other species, including humans.
- Published
- 2018
- Full Text
- View/download PDF
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