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Almeida JZ, Vieira LA, Maside C, Ferreira ACA, Sá NAR, Correia HHV, Araújo VR, Raposo RS, Smitz J, Campello CC, Figueiredo JR, Oriá RB. In vitro cytotoxic effects of 5-Fluorouracil on isolated murine ovarian preantral follicles. Theriogenology 2022; 178:60-66. [PMID: 34775200 DOI: 10.1016/j.theriogenology.2021.10.023] [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: 07/02/2021] [Revised: 10/16/2021] [Accepted: 10/20/2021] [Indexed: 12/01/2022]
Abstract
5 fluorouracil (5FU), an antineoplastic drug, is often utilized in the therapeutic regimen for several types of cancer, including the hepatoblastoma in children. The effects of 5FU on the population of ovarian preantral follicles, which is the largest oocyte reservoir, is still poorly understood. The integrity of the ovarian preantral follicle pool is important for lifelong fertility. The better understanding of such effects may favor intervention strategies to protect fertility in 5FU-treated children and women coping with cancer. To analyze the effects of 5FU on isolated murine secondary follicles in vitro, ovaries were collected from young mice (28-30 days old), and secondary follicles were isolated and cultured for 12 days in basic culture medium, with or without 5FU at concentrations of 0.3 mM, 1 mM, 3 mM, 10 mM, and 30 mM. In the in vitro study, we analyzed the percentage of morphologically normal follicles, antrum formation, follicular diameter, and hormone production. On day 12, oocytes were recovered for in vitro maturation. 5FU treatment did not alter the percentage of morphologically normal follicles. On day 12, only 1, 10, and 30 mM 5FU significantly reduced the percentage of antrum. From day 4 onwards, 5FU treatments significantly reduced follicle diameter. The meiosis resumption rate was significantly lower in all 5FU treatments. 5FU concentrations ≥3 mM reduced estradiol levels. In conclusion, 5FU does not affect follicular morphology. However, 5FU deleteriously affects follicular growth, estradiol production, and oocyte maturation in isolated ovarian follicles.
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Affiliation(s)
- Juliana Z Almeida
- Laboratory of Tissue Healing, Ontogeny, and Nutrition (LABICONTE), Department of Morphology, Institute of Biomedicine, School of Medicine, Federal University of Ceara (UFC), 1315 Rua Cel. Nunes de Melo, Fortaleza, CE, 60430-270, Brazil
| | - L A Vieira
- Faculty of Veterinary Medicine, Laboratory of Oocytes and Preantral Follicles Manipulation (LAMOFOPA), State University of Ceara (UECE), 1700 Av. Dr. Silas Munguba, Fortaleza, CE, 60741-000, Brazil
| | - C Maside
- Faculty of Veterinary Medicine, Laboratory of Oocytes and Preantral Follicles Manipulation (LAMOFOPA), State University of Ceara (UECE), 1700 Av. Dr. Silas Munguba, Fortaleza, CE, 60741-000, Brazil
| | - A C A Ferreira
- Faculty of Veterinary Medicine, Laboratory of Oocytes and Preantral Follicles Manipulation (LAMOFOPA), State University of Ceara (UECE), 1700 Av. Dr. Silas Munguba, Fortaleza, CE, 60741-000, Brazil
| | - N A R Sá
- Faculty of Veterinary Medicine, Laboratory of Oocytes and Preantral Follicles Manipulation (LAMOFOPA), State University of Ceara (UECE), 1700 Av. Dr. Silas Munguba, Fortaleza, CE, 60741-000, Brazil
| | - H H V Correia
- Faculty of Veterinary Medicine, Laboratory of Oocytes and Preantral Follicles Manipulation (LAMOFOPA), State University of Ceara (UECE), 1700 Av. Dr. Silas Munguba, Fortaleza, CE, 60741-000, Brazil
| | - V R Araújo
- Faculty of Veterinary Medicine, Laboratory of Oocytes and Preantral Follicles Manipulation (LAMOFOPA), State University of Ceara (UECE), 1700 Av. Dr. Silas Munguba, Fortaleza, CE, 60741-000, Brazil
| | - R S Raposo
- Experimental Biology Center, University of Fortaleza (UNIFOR), 1321 Av. Washington Soares, Fortaleza, CE, 60811-905, Brazil
| | - J Smitz
- Laboratory of Follicle Biology, Center for Reproductive Medicine, UZ Brussel, Laarbeeklaan 101, Brussels, B-1090, Brazil
| | - C C Campello
- Faculty of Veterinary Medicine, Laboratory of Oocytes and Preantral Follicles Manipulation (LAMOFOPA), State University of Ceara (UECE), 1700 Av. Dr. Silas Munguba, Fortaleza, CE, 60741-000, Brazil
| | - J R Figueiredo
- Faculty of Veterinary Medicine, Laboratory of Oocytes and Preantral Follicles Manipulation (LAMOFOPA), State University of Ceara (UECE), 1700 Av. Dr. Silas Munguba, Fortaleza, CE, 60741-000, Brazil.
| | - R B Oriá
- Laboratory of Tissue Healing, Ontogeny, and Nutrition (LABICONTE), Department of Morphology, Institute of Biomedicine, School of Medicine, Federal University of Ceara (UFC), 1315 Rua Cel. Nunes de Melo, Fortaleza, CE, 60430-270, Brazil
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Barros VRP, Monte APO, Santos JMS, Lins TLBG, Cavalcante AYP, Gouveia BB, Müller MC, Oliveira Junior JL, Barberino RS, Donfack NJ, Araújo VR, Matos MHT. Effects of melatonin on the in vitro growth of early antral follicles and maturation of ovine oocytes. Domest Anim Endocrinol 2020; 71:106386. [PMID: 31809950 DOI: 10.1016/j.domaniend.2019.106386] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 07/17/2019] [Accepted: 08/08/2019] [Indexed: 01/21/2023]
Abstract
This study aimed to evaluate the effect of melatonin on the in vitro culture and maturation of isolated sheep early antral follicles. Isolated early antral follicles were cultured for 12 d in α-minimum essential medium (MEM+) alone (control) or α-MEM+ added with fixed different concentrations (100, 500, or 1,000 pg/mL) or a sequential concentration of melatonin (MelSeq; day 6 = 100; day 12 = 500 pg/mL). The percentage of morphologically normal follicles was higher (P < 0.05) in 500 pg/mL melatonin than the other treatments at 6 d. Mel 500 also showed a higher rate of fully grown oocytes (P < 0.05) than other treatments. After in vitro culture, reactive oxygen species (ROS) levels in oocytes were similar between Mel 500 and MelSeq, with both being lower (P < 0.05) than other treatments. Oocytes cultured in both Mel 500 and Mel 1000 showed glutathione peroxidase levels similar (P > 0.05) to the control group and higher (P < 0.05) than other treatments. Mitochondrial activity was similar (P > 0.05) among control, Mel 500, and Mel 1000 treatments. Mel 500 treatment presented a higher percentage of germinal vesicle breakdown oocytes than the control group and similar percentages to the other treatments. Follicles cultured in melatonin followed by oocyte maturation with the addition of 500 pg/mL melatonin in maturation medium showed increased (P < 0.05) levels of mitochondrial activity compared to α-MEM+ alone. In conclusion, the concentration of 500 pg/mL of melatonin promotes development and decreases ROS levels of ovine oocytes from in vitro grown early antral follicles. Moreover, melatonin increases mitochondrial activity and promotes the acquisition of meiotic competence of these oocytes.
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Affiliation(s)
- V R P Barros
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - A P O Monte
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - J M S Santos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - T L B G Lins
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - A Y P Cavalcante
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - B B Gouveia
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - M C Müller
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - J L Oliveira Junior
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - R S Barberino
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - N J Donfack
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - V R Araújo
- Health Center Science, State University of Ceará, Fortaleza, CE 60714-903, Brazil
| | - M H T Matos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil.
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Barros VRP, Monte APO, Santos JMS, Lins TLBG, Cavalcante AYP, Gouveia BB, Müller MC, Oliveira JL, Donfack NJ, Araújo VR, Matos MHT. Melatonin improves development, mitochondrial function and promotes the meiotic resumption of sheep oocytes from in vitro grown secondary follicles. Theriogenology 2019; 144:67-73. [PMID: 31918071 DOI: 10.1016/j.theriogenology.2019.12.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 05/24/2019] [Revised: 12/07/2019] [Accepted: 12/08/2019] [Indexed: 12/24/2022]
Abstract
The aim of this study was to evaluate follicular survival and development of ovine isolated secondary follicles cultured in medium containing fixed or sequential concentrations of melatonin and further oocyte maturation. Isolated secondary follicles were cultured for 18 days in α-MEM+ alone (control) or with different concentrations of melatonin (100, 500 or 1000 pg/mL) or sequential concentrations of melatonin (Mel Seq: Day 6 = 100; Day 12 = 500; Day 18 = 1000 pg/mL). The percentages of morphologically normal follicles and antral cavity formation increased significantly in 1000 pg/mL melatonin compared to the other treatments. After 18 days, 1000 pg/mL melatonin (Mel 100) showed a greater (P < 0.05) follicular diameter than α-MEM+, 100 and 500 pg/mL melatonin. In addition, the concentration of 500 pg/mL melatonin showed a higher (P < 0.05) percentage of fully grown oocytes than α-MEM+, Mel 100 and Mel Seq treatments. After oocyte maturation, the levels of ROS were lower (P < 0.05) in 1000 pg/mL melatonin (Mel 1000) than in other treatments. Both Mel 1000 and Mel Seq treatments showed significantly higher levels of mitochondrial activity than other treatments. There were no significant differences between 500 and 1000 pg/mL melatonin regarding meiotic stages. In conclusion, the concentration of 1000 pg/mL melatonin maintains survival, promotes follicular development and increases the levels of active mitochondria after in vitro culture of sheep secondary follicles. Moreover, this concentration promotes the meiotic competence of oocytes and decreases the production of ROS during oocyte maturation.
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Affiliation(s)
- V R P Barros
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - A P O Monte
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - J M S Santos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - T L B G Lins
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - A Y P Cavalcante
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - B B Gouveia
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - M C Müller
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - J L Oliveira
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - N J Donfack
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil
| | - V R Araújo
- Health Center Science, State University of Ceará, 60714-903, Fortaleza, CE, Brazil
| | - M H T Matos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, 56300-990, Petrolina, PE, Brazil.
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Garcia R, Araújo V, Mascarini S, Santos EG, Costa AR. How long-term university-industry collaboration shapes the academic productivity of research groups. Innovation 2019. [DOI: 10.1080/14479338.2019.1632711] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Renato Garcia
- Institute of Economics, University of Campinas, Campinas, Brazil
| | - V. Araújo
- Department of Economics, Federal University of Sao Paulo, Osasco, Brazil
| | - S. Mascarini
- Department of Economics, Federal University of Sao Carlos, Sorocaba, Brazil
- Department of Economics and Statistics "Cognetti de Martiis", University of Turin, Turin, Italy
| | - E. G. Santos
- Department of Economics, Federal University of Sao Paulo, Osasco, Brazil
| | - A. R. Costa
- Polytechnic School, University of Sao Paulo, Sao Paulo, Brazil
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Barros VRP, Monte APO, Lins TLBG, Santos JM, Menezes VG, Cavalcante AYP, Araújo VR, Gouveia BB, Matos MHT. In vitro survival, growth, and maturation of sheep oocytes from secondary follicles cultured in serum-free conditions: impact of a constant or a sequential medium containing recombinant human FSH. Domest Anim Endocrinol 2019; 67:71-79. [PMID: 30765293 DOI: 10.1016/j.domaniend.2018.12.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 12/07/2018] [Accepted: 12/12/2018] [Indexed: 12/16/2022]
Abstract
This study evaluated the in vitro development and maturation of ovine oocytes from secondary follicles cultured in serum-free medium containing fixed or sequential concentrations of recombinant human FSH (rhFSH). Follicles were cultured in α-MEM+ alone or with constant (500, 750, or 1,000 ng/mL) or sequential concentrations of rhFSH (seq. 1: day 6 = 500; day 12 = 750; day 18 = 1,000 ng/mL and seq. 2: day 6 = 100; day 12 = 500; day 18 = 1,000 ng/mL). At the end of the experiment, follicular survival was higher (P < 0.05) in 750 ng/mL rhFSH than the control and 1,000 ng/mL rhFSH. As early as day 6 of culture, antral cavity formation was observed in all treatments. Follicular diameter increased progressively and significantly in all treatments throughout 18 d of culture. Furthermore, addition of rhFSH to the medium promoted a significant increase in the percentage of fully grown oocytes in all treatments compared to α-MEM+. Mitochondrial activity was higher in rhFSH treatments than in the control, except in rhFSH seq. 2 (P < 0.05). Maturation rates increased in oocytes from intact follicles cultured in 750 ng/mL rhFSH compared to the control (P < 0.05). In conclusion, rhFSH at 750 ng/mL maintained the survival of secondary follicles cultured in serum-free medium, improved oocyte growth, mitochondrial activity, and oocyte maturation.
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Affiliation(s)
- V R P Barros
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - A P O Monte
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - T L B G Lins
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - J M Santos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - V G Menezes
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - A Y P Cavalcante
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - V R Araújo
- Health Center Science, State University of Ceará, 60714-903 Fortaleza, CE, Brazil
| | - B B Gouveia
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - M H T Matos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil.
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Jimenez CR, de Azevedo JL, Silveira RG, Penitente-Filho J, Carrascal-Triana EL, Zolini AM, Araújo VR, Torres CAA. Effects of Growth Hormone onIn SituCulture of Bovine Preantral Follicles are Dose Dependent. Reprod Domest Anim 2016; 51:575-84. [DOI: 10.1111/rda.12722] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 05/29/2016] [Indexed: 11/28/2022]
Affiliation(s)
- CR Jimenez
- Departament of Animal Science; Laboratory of Animal Physiology and Reproduction; Universidade Federal de Viçosa; Viçosa MG Brazil
| | - JL de Azevedo
- Departament of Animal Science; Laboratory of Animal Physiology and Reproduction; Universidade Federal de Viçosa; Viçosa MG Brazil
| | - RG Silveira
- Departament of Animal Science; Laboratory of Animal Physiology and Reproduction; Universidade Federal de Viçosa; Viçosa MG Brazil
| | - J Penitente-Filho
- Departament of Animal Science; Laboratory of Animal Physiology and Reproduction; Universidade Federal de Viçosa; Viçosa MG Brazil
| | - EL Carrascal-Triana
- Departament of Animal Science; Laboratory of Animal Physiology and Reproduction; Universidade Federal de Viçosa; Viçosa MG Brazil
| | - AM Zolini
- Departament of Animal Science; Laboratory of Animal Physiology and Reproduction; Universidade Federal de Viçosa; Viçosa MG Brazil
| | - VR Araújo
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles; Universidade Estadual do Ceara; Fortaleza CE Brazil
| | - CAA Torres
- Departament of Animal Science; Laboratory of Animal Physiology and Reproduction; Universidade Federal de Viçosa; Viçosa MG Brazil
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Sá NAR, Araújo VR, Correia HHV, Ferreira ACA, Guerreiro DD, Sampaio AM, Escobar E, Santos FW, Moura AA, Lôbo CH, Ceccatto VM, Campello CC, Rodrigues APR, Leal-Cardoso JH, Figueiredo JR. Anethole improves the in vitro development of isolated caprine secondary follicles. Theriogenology 2015; 89:226-234. [PMID: 28043356 DOI: 10.1016/j.theriogenology.2015.12.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [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: 07/31/2015] [Revised: 12/18/2015] [Accepted: 12/18/2015] [Indexed: 11/26/2022]
Abstract
The aim of this study was to investigate the effect of three concentrations of anethole (30, 300, and 2000 μg/mL) on survival, antrum formation, follicular diameter, and oocyte maturation in the caprine species. The study also evaluated the effects of anethole on transcripts of ICAM-1, CAV-1, TIMP-2, and PAI-1 genes and levels of reactive oxygen species (ROS) in isolated goat preantral ovarian follicles before and after in vitro culture for 18 days. Preantral follicles were isolated from goat ovaries and individually cultured in alpha minimum essential medium modified (α-MEM+), defined as the control treatment, α-MEM+ supplemented with ascorbic acid at a concentration of 100 μg/mL (AA), or α-MEM+ supplemented with three different concentrations of anethole (30, 300, 2000 μg/mL) for a period of 18 days. Treatments were named as α-MEM+, AA, AN30, AN300, and AN2000, respectively. After culture, the follicles were opened, the cumulus oocytes complex (COCs) were removed and matured in vitro. The walls of the follicles were used for the quantitation of mRNA by quantitative real-time polymerase chain reaction. Finally, the medium collected at the end of culture was used for the measurements of ROS. After 18 days of culture, the AA treatment showed the percentage of intact follicles and follicular diameter significantly higher compared with the other treatments. However, daily growth rate, antrum formation, and also oocyte diameter were similar among the treatments. In addition, compared with AA, the rate of oocytes for in vitro maturation (diameter ≥ 110 μm) and the meiosis resumption rate were significantly higher in the treatments AN30 and AN2000, respectively. When assessing gene related to remodeling of the basement membrane, significant differences in mRNA levels for ICAM-1, CAV-1, TIMP-2, and PAI-1 were observed in comparison with Day 0, i.e., in the noncultured control. In addition, the ROS from Day 12, all treatments with the addition of anethole have significantly lower values of ROS than α-MEM+ and AA. In conclusion, the addition of anethole to the in vitro culture medium was able to improve the development of goat preantral follicles by reducing concentrations of ROS and increasing the percentage of oocytes able to resume meiosis.
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Affiliation(s)
- N A R Sá
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, CE, Brazil.
| | - V R Araújo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, CE, Brazil
| | - H H V Correia
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, CE, Brazil
| | - A C A Ferreira
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, CE, Brazil
| | - D D Guerreiro
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, CE, Brazil
| | - A M Sampaio
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, CE, Brazil
| | - E Escobar
- Laboratory of Reproduction Biotechnology, Campus Uruguayana, Federal University of Pampa, Uruguaiana, RS, Brazil
| | - F W Santos
- Laboratory of Reproduction Biotechnology, Campus Uruguayana, Federal University of Pampa, Uruguaiana, RS, Brazil
| | - A A Moura
- Department of Zootecnia, Federal University of Ceará, Fortaleza, CE, Brazil
| | - C H Lôbo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, CE, Brazil
| | - V M Ceccatto
- Laboratory of Electrophysiology, Superior Institute of Biomedical Sciences, State University of Ceará, Fortaleza, CE, Brazil
| | - C C Campello
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, CE, Brazil
| | - A P R Rodrigues
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, CE, Brazil
| | - J H Leal-Cardoso
- Laboratory of Electrophysiology, Superior Institute of Biomedical Sciences, State University of Ceará, Fortaleza, CE, Brazil
| | - J R Figueiredo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, CE, Brazil
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Araújo VR, Silva GM, Duarte ABG, Magalhães-Padilha DM, Almeida AP, Lunardi FO, Serafim MKB, Moura AAA, Campello CC, Rodrigues APR, Figueiredo JR. Bone Morphogenetic Protein-6 (BMP-6) Stimulates the Antrum Formation by the Regulation of its Signalling Pathway in Caprine Pre-antral Follicles Cultured In Vitro. Reprod Domest Anim 2015; 51:59-68. [PMID: 26660854 DOI: 10.1111/rda.12646] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Accepted: 10/27/2015] [Indexed: 01/18/2023]
Abstract
BMP-6 has been found to be important to ovarian cells and oocyte, as well as to uterus. Thus, this study investigated the effect of bone morphogenetic protein (BMP-6) and recombinant follicle-stimulating hormone (rFSH) alone or in combination on the in vitro culture (IVC) of isolated caprine secondary follicles (Experiment 1) and the mRNA levels for BMP receptors/Smad signalling pathway (BMPR1A, BMPR2, SMAD1, SMAD4, SMAD5, SMAD6, SMAD7 and SMAD8) in vivo and in vitro using BMP-6 (Experiment 2). Secondary follicles were cultured in αMEM(+) alone (control medium) or supplemented with BMP-6 at 1 or 10 ng/ml and rFSH alone or the combination of both BMP-6 concentrations and rFSH. The results from Experiment 1 showed that the antrum formation rate was higher in the BMP-6 at 1 ng/ml (p < 0.05) than in MEM. In Experiment 2, the mRNA expression for BMPR2, SMAD1, SMAD5 and SMAD6 was detected in non-cultured control and after in vitro culture (MEM and 1 ng/ml BMP-6); while the expression of SMAD7 and SMAD8 mRNA was only detected after IVC, SMAD4 was only detected in the BMP-6 at 1 ng/ml treatment. In conclusion, the low BMP-6 concentration positively influenced antrum formation and ensured normal mRNA expression for BMP receptor and Smads after IVC of caprine secondary follicles.
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Affiliation(s)
- V R Araújo
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - G M Silva
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A B G Duarte
- Medical School, Morphology Department, Federal University of Ceará, Fortaleza, CE, Brazil
| | - D M Magalhães-Padilha
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A P Almeida
- Laboratory of Molecular Biology and Development, University of Fortaleza, Fortaleza, CE, Brazil
| | - F O Lunardi
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - M K B Serafim
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A A A Moura
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, CE, Brazil
| | - C C Campello
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A P R Rodrigues
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - J R Figueiredo
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
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9
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Ferreira ACA, Maside C, Sá NAR, Guerreiro DD, Correia HHV, Leiva-Revilla J, Lobo CH, Araújo VR, Apgar GA, Brandão FZ, Figueiredo JR, Campello CC. Balance of insulin and FSH concentrations improves the in vitro development of isolated goat preantral follicles in medium containing GH. Anim Reprod Sci 2015; 165:1-10. [PMID: 26723481 DOI: 10.1016/j.anireprosci.2015.10.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 10/05/2015] [Accepted: 10/30/2015] [Indexed: 11/25/2022]
Abstract
The aim of this study was to evaluate the effect of different combinations of insulin and FSH concentrations in culture media containing GH on the in vitro follicle morphology, antrum formation, growth rates, estradiol (E2) production, oocyte viability and maturation as well as gene expression for FSHR, GHR, INSR, CYP19A1, CYP17, 3ßHSD. Secondary follicles were individually cultured for 18 days in a basic medium containing 50ng/mL GH supplemented with low insulin concentration (INS-LW: 10ng/mL) or high insulin concentration (INS-HG: 10μg/mL) alone or with a fixed FSH concentration (FSH100: 100ng/mL) or with increasing FSH concentrations (FSH-SEQ: 100ng/mL, days 0-6; 500ng/mL, days 6-12; 1000ng/mL days 12-18). In the INS-LW treatment was observed a higher (P<0.05) incidence of normal follicles at day 18 of culture. However, overall higher (P<0.05) follicular growth, oocyte diameter and meiotic resumption rates were obtained using INS-HG+FSH 100. The INS-HG and INS-HG+FSH100 treatments showed higher E2 production and mRNA levels for CYP19A1, CYP17, 3βHSD when compared to INS-LW and INS-LW+FSH100. However, the addition of increasing FSH concentration, regardless of insulin concentration, did not improve the follicular growth, meotic resumption, E2 production or gene expression of steroidogenic enzymes when compared with INS-HG+FSH100. In conclusion, in presence of GH, a basic medium supplemented with 10μg/mL insulin and 100μg/mL FSH throughout the culture period, improves follicular and oocyte growth, oocyte meiotic resumption and E2 production from isolated preantral caprine follicles cultured in vitro.
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Affiliation(s)
- A C A Ferreira
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil.
| | - C Maside
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - N A R Sá
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - D D Guerreiro
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - H H V Correia
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - J Leiva-Revilla
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - C H Lobo
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, CE, Brazil
| | - V R Araújo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil; Health Sciences Center, State University of Ceará, Fortaleza, CE, Brazil
| | - G A Apgar
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, USA
| | - F Z Brandão
- Department of Animal Reproduction, Faculty of Veterinary, Federal University Fluminense, Rio de Janeiro, RJ, Brazil
| | - J R Figueiredo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - C C Campello
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
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10
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Santos LP, Barros VRP, Cavalcante AYP, Menezes VG, Macedo TJS, Santos JMS, Araújo VR, Queiroz MAA, Matos MHT. Protein Localization of Epidermal Growth Factor in Sheep Ovaries and Improvement of Follicle Survival and Antrum FormationIn Vitro. Reprod Domest Anim 2014; 49:783-9. [DOI: 10.1111/rda.12369] [Citation(s) in RCA: 14] [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: 02/14/2014] [Accepted: 06/04/2014] [Indexed: 01/26/2023]
Affiliation(s)
- LP Santos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - VRP Barros
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - AYP Cavalcante
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - VG Menezes
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - TJS Macedo
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - JMS Santos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - VR Araújo
- LAMOFOPA; Faculty of Veterinary Medicine; State University of Ceara; Fortaleza CE Brazil
| | - MAA Queiroz
- Laboratory of Bromatology and Animal Nutrition; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - MHT Matos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
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11
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Araújo VR, Gastal MO, Wischral A, Figueiredo JR, Gastal EL. In vitro development of bovine secondary follicles in two- and three-dimensional culture systems using vascular endothelial growth factor, insulin-like growth factor-1, and growth hormone. Theriogenology 2014; 82:1246-53. [PMID: 25219848 DOI: 10.1016/j.theriogenology.2014.08.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [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: 01/22/2014] [Revised: 07/08/2014] [Accepted: 08/01/2014] [Indexed: 11/25/2022]
Abstract
The aim of this study was to evaluate the development and estradiol production of isolated bovine secondary follicles in two-dimensional (2D, experiment 1) and three-dimensional (3D using alginate, experiment 2) long-term culture systems in the absence (control group; only α-MEM(+)) or presence of vascular endothelial growth factor (VEGF), insulin-like growth factor-1, or GH alone, or a combination of all. A total of 363 isolated secondary follicles were cultured individually for 32 days at 38.5 °C in 5% CO2 in a humidified incubator with addition of medium (5 μL) every other day. In 2D culture system, follicular growth and antrum formation rates were higher (P < 0.05) in VEGF treatment compared with the other treatments. In 3D culture system, only estradiol concentration was greater (P < 0.05) in the GH than in the control group, whereas the other end points were similar (P > 0.05). In summary, this study demonstrated that the benefits of using a certain type of medium supplement depended on the culture system (2D vs. 3D). Vascular endothelial growth factor was an effective supplement for the in vitro culture of bovine secondary follicles when the 2D culture system was used, whereas GH only affected estradiol production using the 3D culture system. This study sheds light on advancements in methodology to facilitate subsequent studies on bovine preantral follicle development.
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Affiliation(s)
- V R Araújo
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, Illinois, USA; Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, Ceará, Brazil
| | - M O Gastal
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, Illinois, USA
| | - A Wischral
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, Illinois, USA
| | - J R Figueiredo
- Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, Ceará, Brazil
| | - E L Gastal
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, Illinois, USA.
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Serafim MKB, Silva GM, Duarte ABG, Araújo VR, Silva TFP, Lima AKF, Chaves RN, Campello CC, Silva LDM, Figueiredo JR. High insulin concentrations promote the in vitro growth and viability of canine preantral follicles. Reprod Fertil Dev 2014; 25:927-34. [PMID: 22953726 DOI: 10.1071/rd12074] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2012] [Accepted: 08/04/2012] [Indexed: 11/23/2022] Open
Abstract
To determine whether the effects of different concentrations of insulin on the development of canine preantral follicles in vitro were associated or not with FSH, secondary follicles were isolated and cultured. In Experiment 1, follicles were cultured in the following media: modified minimum essential medium (CtrlMEM) alone; CtrlMEM plus 5 ng mL⁻¹ insulin (Ins5ng); CtrlMEM plus 10 ng mL⁻¹ insulin (Ins10ng); and CtrlMEM plus 10 μg mL⁻¹ insulin. In Experiment 2, follicles were cultured in the same media but in the presence of sequential FSH (i.e. CtrlFSH, Ins5ngF, Ins10ngF and 10μgF, respectively). Increasing concentrations of FSH (100, 500 and 1000 ng mL⁻¹) were added sequentially to the culture medium on Days 0, 6 and 12 of culture. Viability were assessed at the end of culture and follicular diameter and the antrum formation rate at four time points (Days 0, 6, 12 and 18). In Experiment 1, the high insulin concentration significantly increased follicular viability (P<0.05). In contrast, in Experiment 2, viability was not affected by the inclusion of insulin. In addition, viability was significantly better in follicles cultured in CtrlFSH (P<0.05). The diameter of follicles in the high-insulin group in Experiment 1 and high-insulin plus FSH group in Experiment 2 was superior to other groups tested. In experiment 2, the Ins10μg and Ins10μgF groups exhibited significantly higher antrum formation rates than the other groups. In conclusion, in the absence of FSH, high concentrations of insulin have beneficial effects on follicular viability. However, to promote the growth of canine preantral follicles in vitro, it is recommended that a combination of insulin and FSH be added to the medium.
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Affiliation(s)
- Michelle K B Serafim
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles LAMOFOPA, Veterinary Science Post Graduation Program VSPGP, State University of Ceara, Av. Paranjana, 1700, Campus do Itaperi, Fortaleza, CE 60.740-000, Brazil
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13
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Barros VRP, Cavalcante AYP, Macedo TJS, Barberino RS, Lins TLB, Gouveia BB, Menezes VG, Queiroz MAA, Araújo VR, Palheta RC, Leite MCP, Matos MHT. Immunolocalization of Melatonin and Follicle-Stimulating Hormone Receptors in Caprine Ovaries and their Effects Duringin vitroDevelopment of Isolated Pre-Antral Follicles. Reprod Domest Anim 2013; 48:1025-33. [DOI: 10.1111/rda.12209] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 06/03/2013] [Indexed: 12/15/2022]
Affiliation(s)
- VRP Barros
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - AYP Cavalcante
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - TJS Macedo
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - RS Barberino
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - TLB Lins
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - BB Gouveia
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - VG Menezes
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - MAA Queiroz
- Laboratory of Bromatology and Animal Nutrition; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - VR Araújo
- Faculty of Veterinary Medicine; LAMOFOPA; State University of Ceara; Fortaleza CE Brazil
| | - RC Palheta
- Laboratory of Physiology; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - MCP Leite
- Center of Agrarian; Ambiental and Biological Sciences; Federal University of Reconcavo of Bahia; Cruz das Almas BA Brazil
| | - MHT Matos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
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Bolzan A, Santos E, Serafim D, Ayer E, Neto A, Chaves M, Araújo V, Cerqueira J. O09.4 Mobilization For HIV, Syphilis and Hepatitis B and C Testing During Brazil’s Carnival. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0134] [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: 11/03/2022]
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15
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Duarte ABG, Araújo VR, Chaves RN, Silva GM, Magalhães-Padilha DM, Satrapa RA, Donato MAM, Peixoto CA, Campello CC, Matos MHT, Barros CM, Figueiredo JR. Bovine dominant follicular fluid promotes the in vitro development of goat preantral follicles. Reprod Fertil Dev 2012; 24:490-500. [PMID: 22401281 DOI: 10.1071/rd11176] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Accepted: 08/14/2011] [Indexed: 11/23/2022] Open
Abstract
The aim of this study was to evaluate the effect of follicular fluid collected from bovine dominant follicles (bFF) on the in vitro development of goat preantral follicles and determine the best time to add this supplement to the culture medium. The preantral follicles were isolated and randomly distributed into four treatments in absence (control) or presence of 10% of bFF added on Days 0 (FF0-18), 6 (FF6-18) or 12 (FF12-18) of culture onwards. After 18 days, follicular development was assessed based on follicular survival, antral cavity formation, increased follicular diameter as well as fully grown oocyte (>110 μm) viability and meiosis resumption. The oocytes from the cultured follicles were in vitro-matured and processed for fluorescence or ultrastructural analysis. The results showed that on Day 18 the treatment FF0-18 had a significantly higher (P<0.05) survival than control and FF12-18, but not FF6-18. The addition of bFF at the beginning of culture (FF0-18 and FF6-18) promoted a high percentage of follicular growth, meiosis resumption and early antrum formation. Moreover, this study described for the first time the ultrastructural analysis of caprine oocytes grown in vitro. This evaluation revealed that in the presence of bFF on (FF0-18) the in vitro-grown oocytes presented normal organelle distribution and well-defined, intact plasma and nuclear membranes. In conclusion, bFF originating from dominant follicles maintain the survival and promote the in vitro growth of goat preantral follicles when added at the beginning of culture.
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Affiliation(s)
- A B G Duarte
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, 60740-903, CE, Brazil.
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16
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Brito IR, Lima IMT, Saraiva MVA, Silva CMG, Magalhães-Padilha DM, Araújo VR, Barreto Luz V, Barbalho Silva AW, Campello CC, Silva JRV, Figueiredo JR. Expression Levels of mRNA-Encoding PDGF Receptors in Goat Ovaries and the Influence of PDGF on the In Vitro Development of Caprine Pre-Antral Follicles. Reprod Domest Anim 2011; 47:695-703. [DOI: 10.1111/j.1439-0531.2011.01946.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Araújo VR, Silva GM, Duarte ABG, Magalhães DM, Almeida AP, Gonçalves RFB, Bruno JB, Silva TFP, Campello CC, Rodrigues APR, Figueiredo JR. Vascular endothelial growth factor-A(165) (VEGF-A(165)) stimulates the in vitro development and oocyte competence of goat preantral follicles. Cell Tissue Res 2011; 346:273-81. [PMID: 21987221 DOI: 10.1007/s00441-011-1251-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Accepted: 09/15/2011] [Indexed: 11/25/2022]
Abstract
The aim of this study was to evaluate the effect of vascular endothelial growth factor-A(165) (VEGF-A(165)) on the in vitro development of goat secondary preantral follicles. Preantral follicles (≥150 μm in diameter) were isolated from the ovaries of adult mixed-breed goats and individually cultured for 18 days in αMEM in the absence (control) or presence of VEGF-A(165) at concentrations of 10 ng/ml (VEGF10) and 100 ng/ml (VEGF100). Analyses of follicular survival, diameter, antrum formation and rate of daily growth were performed every 6 days. At the end of the culture period, morphologically normal oocytes (≥110 μm in diameter) were taken for in vitro maturation (IVM). The results demonstrated that all follicles presented oocytes and granulosa cells that were morphologically normal and after labeling with calcein-AM, high rates of oocyte viability were observed in all treatments. The follicular diameter and the growth rate achieved in the presence of VEGF10 were higher than those of the control. Both treatments with VEGF-A(165) showed higher rates of oocyte recovery for IVM when compared with the control. Moreover, only the addition of VEGF-A(165) permitted oocytes grown in vitro to reach metaphase II. Thus, the addition of VEGF-A(165) to the culture medium improves the development of goat preantral follicles cultured in vitro, allowing the production of mature oocytes.
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Affiliation(s)
- V R Araújo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceara, Fortaleza, CE, Brazil.
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18
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Magalhães-Padilha DM, Duarte ABG, Araújo VR, Saraiva MVA, Almeida AP, Rodrigues GQ, Matos MHT, Campello CC, Silva JR, Gastal MO, Gastal EL, Figueiredo JR. Steady-state level of insulin-like growth factor-I (IGF-I) receptor mRNA and the effect of IGF-I on the in vitro culture of caprine preantral follicles. Theriogenology 2011; 77:206-13. [PMID: 21924471 DOI: 10.1016/j.theriogenology.2011.07.036] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Revised: 07/01/2011] [Accepted: 07/22/2011] [Indexed: 11/28/2022]
Abstract
The objectives were to quantify insulin-like growth factor receptor-1 (IGFR-1) mRNA in preantral follicles on Days 0 and 18 of in vitro culture in the presence or absence of FSH, and to evaluate the effects of IGF-I on the rate of normal follicles, antral cavity formation, and in vitro growth and maturation of caprine oocytes on Days 0, 6, 12, and 18 of culture. The expression of IGFR-1 was analyzed using real-time RT-PCR before and after follicle culture. Preantral follicles were isolated from the cortex of caprine ovaries and individually cultured for 18 d in the presence or absence of bovine IGF-I (50 or 100 ng/mL). At the end of the culture period, the oocytes were submitted to IVM. The expression of IGFR-1 mRNA in preantral follicles cultured in vitro only approached being significantly higher in follicles supplemented with FSH when compared to follicles immediately after recovery (P<0.06) and cultured without FSH (P<0.1). There was a higher (P<0.05) percentage of normal follicles on Days 6, 12, and 18 of culture in IGF-I 50 (97, 92, 67%, respectively) and IGF-I 100 (100, 90, 80%) groups versus the control (90, 64, 36%). In addition, the rate of antrum formation at 6 and 12 d of culture was higher (P<0.05) in IGF-I groups (IGF-I 50: 72 and 90% and IGF-I 100: 69 and 85%) than the control group (41 and 59%). After 18 d of culture, the percentages of grown oocytes acceptable for IVM were higher (P<0.05) in follicles cultured in the presence of IGF-I (82 vs 49%). Furthermore, follicles cultured in the presence of IGF-I 50 and IGF-I 100 had higher (P<0.05) meiotic resumption rates (63 and 66%, respectively) than the control group (11%). In conclusion, treatment with FSH tended to increase IGFR-1 mRNA expression during the in vitro culture of preantral follicles and the addition of IGF-I to the culture medium clearly improved the in vitro development of caprine preantral follicles.
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Affiliation(s)
- D M Magalhães-Padilha
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles (LAMOFOPA), Veterinary Faculty, State University of Ceará, Av. Paranjana, 1700, Campus do Itaperi, Fortaleza, 60740-000, CE, Brazil.
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19
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Luz VB, Santos RR, Araújo VR, Celestino JJH, Magalhães-Padilha DM, Chaves RN, Brito IR, Silva TFP, Almeida AP, Campello CC, Figueiredo JR. The Effect of LIF in the Absence or Presence of FSH on the In Vitro Development of Isolated Caprine Preantral Follicles. Reprod Domest Anim 2011; 47:379-84. [DOI: 10.1111/j.1439-0531.2011.01883.x] [Citation(s) in RCA: 15] [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] [Indexed: 11/27/2022]
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20
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Magalhães DM, Araújo VR, Lima-Verde IB, Matos MHT, Silva RC, Lucci CM, Báo SN, Campello CC, Figueiredo JR. Impact of pituitary FSH purification on in vitro early folliculogenesis in goats. BIOCELL 2009; 33:91-97. [PMID: 19886036] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Porcine pituitary follicle stimulating hormone (pFSH) is known to regulate the production of growth factors that have an essential role in early foliculogenesis. However, the effects of different preparations of pFSH on the survival and development of caprine follicles are not yet known. The aim of this study was to evaluate the effects of different pFSH (Stimufol and Folltropin) on the in vitro survival and growth of caprine preantral follicles. Pieces of caprine ovarian tissues were cultured for either one or seven days in a supplemented Minimum Essential Medium, alone or containing either Stimufol (50 ng/mL) or Folltropin (10, 50, 100 and 1000 ng/mL). Fresh control ovarian tissues as well as cultured tissued were processed for histological and ultrastructural studies. The results showed that after seven days, only Stimufol maintained follicular morphology similar to control. Moreover, follicular degeneration was higher in medium alone or with Folltropin at 50, 100 and 1000 ng/mL. However, at day seven, the percentage of growing follicles was higher in 100 ng/mL of Folltropin than Stimufol. In conclusion, FSH preparations affect differently the performance of in vitro culture of caprine preantral follicles. Stimufol was better to preserve follicular morphology while Folltropin was more efficient to promote follicular growth.
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Affiliation(s)
- D M Magalhães
- Faculdade de Medicina Veterinária, LAMOFOPA, PPGCV, Universidade Estadual do Ceará, Fortaleza, CE, Brasil.
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21
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Rossetto R, Lima-Verde IB, Matos MHT, Saraiva MVA, Martins FS, Faustino LR, Araújo VR, Silva CMG, Name KPO, SN SNB, Campello CC, Figueiredo JR, Blume H. Interaction between ascorbic acid and follicle-stimulating hormone maintains follicular viability after long-term in vitro culture of caprine preantral follicles. Domest Anim Endocrinol 2009; 37:112-23. [PMID: 19493642 DOI: 10.1016/j.domaniend.2009.04.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2008] [Revised: 04/10/2009] [Accepted: 04/12/2009] [Indexed: 11/18/2022]
Abstract
This study evaluates the effects of ascorbic acid and its interaction with follicle-stimulating hormone (FSH) on the morphology, activation, and in vitro growth of caprine preantral follicles. Ovarian fragments were cultured for 1, 7, or 14 d in minimum essential medium (MEM) containing ascorbic acid (50 or 100microg/mL), FSH (50ng/mL), or both of these substances. Ovarian tissue that was either fresh (control) or cultured for 1, 7, or 14 d was processed for histological and ultrastructural evaluation. The results showed that after 14 d of culture, medium supplemented with 50microg/mL of ascorbic acid alone or combined with FSH showed higher rates of follicular survival compared with MEM. After 7 d of culture, FSH, ascorbic acid at 50microg/mL with or without FSH, and ascorbic acid at 100microg/mL increased the percentage of follicular activation compared to fresh control. In addition, FSH alone significantly increased the percentage of growing follicles after 14 d. The combination of 50microg/mL of ascorbic acid and FSH promoted a significant increase in oocyte and follicular diameter after 7 d of culture. Ultrastructural and fluorescent analysis confirmed the integrity of follicles cultured with 50microg/mL of ascorbic acid and FSH after 14 d. In conclusion, the combination of 50microg/mL of ascorbic acid and FSH maintained follicular integrity and promoted follicular activation and growth after long-term in vitro culture of caprine preantral follicles.
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Affiliation(s)
- R Rossetto
- Faculty of Veterinary Medicine, UPIS - Pioneer Union of Social Integration, DF, Brazil.
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Silva CMG, Matos MHT, Rodrigues GQ, Faustino LR, Pinto LC, Chaves RN, Araújo VR, Campello CC, Figueiredo JR. In vitro survival and development of goat preantral follicles in two different oxygen tensions. Anim Reprod Sci 2009; 117:83-9. [PMID: 19442461 DOI: 10.1016/j.anireprosci.2009.03.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 03/20/2009] [Accepted: 03/27/2009] [Indexed: 10/20/2022]
Abstract
The aim of the present study was to evaluate the effect of two different oxygen (O(2)) concentrations on survival and development of preantral follicles of goats cultured in vitro. Preantral ovarian follicles (> or =150 microm) were isolated from ovarian cortex fragments of goats and individually cultured for 30 days under two different O(2) concentrations (5% and 20% O(2)). Follicle development was evaluated on the basis of antral cavity formation, increase in follicular diameter, presence of healthy cumulus oocyte complexes and fully grown oocytes. Results showed with progression of culture period from 6 to 12 days, a decrease in follicular survival was observed in both O(2) concentrations (P<0.05). When the O(2) tensions were compared to each other in the different days of culture, 20% O(2) was more efficient in promoting an increase in follicular diameter from day 24 of culture onward than 5% O(2) (P<0.05). However, follicles cultured with 5% O(2) had an increased percentage of antrum formation from 12 days to the end of culture, compared with 20% O(2) (P<0.05). Moreover, there was no difference in percentage of fully developed oocytes with the different O(2) tensions. However, only oocytes (16.7%) from follicles cultured in 20% O(2) resumed meiosis. In conclusion, concentration of 20% O(2) was more efficient in promoting follicular growth and oocyte meiosis resumption from preantral follicles of goats when grown in vitro.
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Affiliation(s)
- C M G Silva
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, Ceará, Brazil.
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23
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Bettencourt P, Ferreira A, Pardal-Oliveira N, Pereira M, Queirós C, Araújo V, Cerqueira-Gomes M, Maciel MJ. Clinical significance of brain natriuretic peptide in patients with postmyocardial infarction. Clin Cardiol 2009; 23:921-7. [PMID: 11129679 PMCID: PMC6654948 DOI: 10.1002/clc.4960231213] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Risk stratification after acute myocardial infarction (AMI) includes the evaluation of left ventricular (LV) function. Natriuretic peptides, and particularly brain natriuretic peptide (BNP), emerged as a potential marker of ventricular function and prognosis after AMI. HYPOTHESIS Brain natriuretic peptide levels are related to ventricular function, either systolic or isolated diastolic, and can give prognostic information in patients surviving AMI. METHODS In all, 101 patients were enrolled. An echocardiographic (M-mode, two-dimensional, and pulsed Doppler) evaluation was performed and blood samples for BNP measurement were obtained. Clinical events were recorded during 12 months of follow-up. RESULTS A negative correlation between BNP and LV ejection fraction was observed (r = -0.38; p < 0.001). The BNP levels were higher among patients with LV systolic dysfunction than in patients with isolated diastolic dysfunction (339.1 +/- 249.9 vs. 168.0 +/- 110.5 pg/ml, p = 0.001). The latter had higher levels of BNP than those with normal LV function (68.3 +/- 72.6 pg/ml, p < 0.001). The BNP accuracy to detect LV systolic dysfunction was good (area under the ROC curve [AUC] = 0.83) and increased when isolated diastolic dysfunction was also considered (AUC = 0.87). Brain natriuretic peptide had a very good accuracy in the prediction of death (AUC = 0.95) and the development of heart failure (AUC = 0.90). CONCLUSION These results extend previous evidence relating BNP to systolic function after AMI. Furthermore, a relationship between BNP levels and diastolic function was found. Brain natriuretic peptide had a very good performance in detecting the occurrence of an adverse event. We conclude that BNP can detect high-risk patients and help select patients for more aggressive approaches.
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Affiliation(s)
- P Bettencourt
- Hospital S. João, and Faculdade de Medicina da Universidade do Porto, Portugal
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24
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Billis A, Schenka AA, Ramos CC, Carneiro LT, Araújo V. Squamous and/or glandular differentiation in urothelial carcinoma: prevalence and significance in transurethral resections of the bladder. Int Urol Nephrol 2002; 33:631-3. [PMID: 12452615 DOI: 10.1023/a:1020597611645] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND It is controversial if urothelial carcinoma of the bladder with squamous and/or glandular differentiation is a more aggressive neoplasm than conventional urothelial carcinoma. DESIGN A total of 165 transurethral resections of the bladder were reviewed. A group with squamous and/or glandular differentiation was compared to a group without this finding. The chi-square test was used to assess the association of the groups with stage (TNM, 1997). RESULTS Of the total of 165 transurethral resections of the bladder, 153 (92.72%) were conventional urothelial carcinomas and 12 (7.27%) showed squamous and/or glandular differentiation. The distribution according to stage was 84 (54.9%), 35 (22.9%) and 34 (22.2%) for the group without differentiation and 0 (0%), 3 (25%) and 9 (75%) for the group with squamous and/or glandular differentiation, respectively for stages pTa, pT1 and pT2. Tumors with squamous and/or glandular differentiation showed a significant statistical correlation to higher stage at clinical presentation (p < 0.0001). There was no significant statistical relation according to age (p = 0.8433), sex (p = 0.5672) or race (p = 0.3137). CONCLUSIONS The results suggest that urothelial bladder carcinomas with squamous and/or glandular differentiation are more aggressive neoplasms. There was a significant statistical correlation between tumors with this differentiation and higher stage at clinical presentation.
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Affiliation(s)
- A Billis
- Department of Anatomic Pathology, School of Medicine, State University of Campinas (UNICAMP), Campinas, Brazil.
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25
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Rodrigues RA, Dias P, Pereira M, Castro A, Queirós MC, Monteiro E, Araújo V, Bettencourt P, Ferreira A. Echocardiographic patterns and prognosis in heart failure. Rev Port Cardiol 2001; 20:1241-6. [PMID: 11865684] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
BACKGROUND There are many variables with prognostic value in patients with heart failure (HF). Those related to left ventricular function are among the most important. Recently, the evaluation of the patterns of ventricular filling by pulsed Doppler echocardiography has been studied as a variable with prognostic value. OBJECTIVES To evaluate the prognostic value of echocardiography variables (diastolic and systolic) in patients with HF. These variables were analysed in respect to hospital admission for cardiovascular reasons or death. MATERIAL AND METHODS We evaluated 157 consecutive patients with HF and included 110 patients who were in sinus rhythm. The mean age was 68.2 +/- 0.9 years. HF was ischemic in 52.7%. Patients underwent echocardiography examination within the week of reference. The patients were grouped according to left ventricular (LV) systolic dysfunction (LV ejection fraction < 40%). We also classified patients in two groups according to the presence of a restrictive pattern in diastolic transmitral flow profile. Finally, we classified all patients in four groups according to their systolic function and diastolic pattern: Group I--systolic dysfunction and restrictive ventricular filling pattern. Group II--systolic dysfunction without restrictive ventricular filling pattern. Group III--without systolic dysfunction with restrictive ventricular filling pattern. Group IV--without systolic dysfunction without restrictive ventricular filling pattern. The events were death or hospital admission. The mean follow up time was 625 +/- 55 days. We did a statistical analysis and for all tests a p value < 0.05 was considered statistically significant. RESULTS We found impaired LV systolic function (systolic HF) in 73.6% and restrictive ventricular filling pattern in 45.5%. During the follow-up 41.8% died or were admitted to hospital. Patients with systolic HF had lower admission free survival rate. Patients with restrictive ventricular filling pattern had lower admission free survival rate than those without. Group I had lower admission free survival rate than Group II and Group IV. Group IV had a higher admission free survival than all other Groups. CONCLUSIONS These results support and expand previous observations that diastolic function variables, such as the pattern of ventricular filling (namely the restrictive) have independent prognostic value in patients with HF.
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Affiliation(s)
- R A Rodrigues
- Serviço de Cardiologia e Serviço de Medicina 3 do Hospital de S. João-Porto.
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26
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Queirós MDC, Pinto PF, Cruz C, Oliveira NP, Araújo V, Macedo F, Lima CA. Unusual image. Rev Port Cardiol 2001; 20:1275-8. [PMID: 11865688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
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27
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Dias P, Pinto P, Araújo V, Pimentel F, Maciel MJ. Acute pulmonary embolism. Rev Port Cardiol 2001; 20:1043-6. [PMID: 11770442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Affiliation(s)
- P Dias
- Serviço de Cardiologia Serviço de Radiologia do Hospital de S. João-Porto, Portugal.
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28
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Araújo F, Sá JJ, Araújo V, Lopes M, Cunha-Ribeiro LM. Post-transfusion purpura vs. heparin-induced thrombocytopenia: differential diagnosis in clinical practice. Transfus Med 2000; 10:323-4. [PMID: 11123820 DOI: 10.1046/j.1365-3148.2000.00269-4.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Araújo F, Santos A, Araújo V, Henriques I, Monteiro F, Meireles E, Moreira I, David D, Maciel MJ, Cunha-Ribeiro LM. Genetic risk factors in acute coronary disease. Haemostasis 2000; 29:212-8. [PMID: 10702702 DOI: 10.1159/000022504] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVE We investigate whether each of the following: HPA-1, Factor V Leiden, prothrombin gene variant and the methylene tetrahydrofolate reductase gene (MTHFR) mutation, are risk factors for acute coronary disease in Portuguese patients. MATERIAL AND METHODS 100 blood donors and 52 patients with an established diagnosis of myocardial infarction or unstable angina were evaluated for genetic risk factors, by determining HPA-1 genotype, Factor V Leiden, Prothrombin 20210 variant and MTHFR mutation. RESULTS We found a prevalence of 2.0% for Factor V Leiden, 5.0% for the Prothrombin 20210 variant and 66% for the MTHFR mutation in blood donors. These values are similar to those found in the patients (1.9, 3.8 and 58%, respectively). We found that 28/100 controls had the PI(A2) polymorphism, a frequency statistically different from that in the patients (23/52). This difference was even more pronounced in patients less than 60 years old (27/96 vs. 13/24). CONCLUSION Factor V Leiden, Prothrombin 20210 variant and MTHFR mutation do not seem to represent risk factors for acute coronary disease. However, the PI(A2) polymorphism could have a role in the pathogenesis of this disease. The presence of multiple genetic factors, more than single ones, could influence the development and outcome of myocardial infarction and unstable angina. Larger studies are needed in order to have a better insight into the pathophysiological mechanisms of this disease, along with its prevention and the development of new treatments.
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Affiliation(s)
- F Araújo
- Center of Thrombosis, Haemostasis and Vascular Biology, Molecular Biology Unit, Department of Transfusion Medicine and Blood Bank, Hospital S. João, Porto, Portugal.
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Abstract
OBJECTIVE The aim of this report was to assess p53 and MDM2 expression in odontogenic cysts and tumours, as they are known to play important roles in cell proliferation and tumorigenesis. MATERIALS AND METHODS The expression of p53 and MDM2 proteins was determined immunohistochemically in 51 formalin-fixed, paraffin embedded specimens of odontogenic cysts and tumours. RESULTS No positivity to p53 was found in the cases studied. MDM2 expression in ameloblastoma was higher than in radicular cysts, but lower than that observed in odontogenic keratocysts. No difference was observed between MDM2 expression in radicular cyst and adenomatoid odontogenic tumour. The clear-cell odontogenic ameloblastoma presented strong immunoreaction to this antigen. CONCLUSIONS The results suggest that MDM2 overexpression may be involved in the pathogenesis of some odontogenic lesions.
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Affiliation(s)
- J Carvalhais
- Department of Oral Surgery and Pathology, School of Dentistry, Minas Gerais Federal University, Minas Gerais, Brazil
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31
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Araújo V, Sousa S, Jaeger M, Jaeger R, Loyola A, Crivelini M, Araújo N. Characterization of the cellular component of polymorphous low-grade adenocarcinoma by immunohistochemistry and electron microscopy. Oral Oncol 1999; 35:164-72. [PMID: 10435151 DOI: 10.1016/s1368-8375(98)00102-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In order to characterize the cellular component of the polymorphous low-grade adenocarcinoma (PLGA) of the salivary gland, a morphological and immunohistochemical study was carried out. Thirty cases of PLGA were studied by light microscopy and immunohistochemistry and five cases by transmission electron microscopy (TEM). The expression of cytokeratins (CKs) 7,8,10,13,14,18,19, vimentin and muscle-specific actin (MSA) was investigated through the streptavidin-biotin method. The majority of tumor cells stained for vimentin, CKs 8, 18 and 7. CK 14 was positive in most cells of the papillary and trabecular sub-types. Although the expression of CKs 8,18 and 14 varied among the tumors sub-types, a straight relationship between each histologic pattern and the CK expression could not be delineated. MSA was reactive in only three tumors while CKs 10 and 13 were not detected in any tumor studied. The absence of MSA and the expression of CKs 8,18 and 7, in most of the tumor cells, lead to the hypothesis that myoepithelial cells are not the major cellular component of the PLGA. TEM revealed cells exhibiting microvilli and variable amounts of secretory granules, some of them suggesting an excretory activity. The presence of CKs 8,18 and 7, added to the secretory granules, indicates that PLGA originates from cells located at the acinar-intercalated duct junction.
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Affiliation(s)
- V Araújo
- Faculdade de Odontologia, Oral Pathology, School of Dentistry, University of São Paulo, Brazil.
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32
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Santos J, Araújo V, Moura L, Serrão P, Guerra L, Maciel J, Pestana M. [An increase in renal dopamine production after the administration of radiographic contrast agents]. Rev Port Cardiol 1998; 17:1007-11. [PMID: 9973862] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
Renal vasoconstriction and anti-natriuresis conditioned by radiographic contrast agents (CA) may be antagonised by the administration of exogenous dopamine. However, the influence of CA on the activity of renal synthesis of dopamine has not been studied. This study assessed the daily urinary excretion of dopamine, its precursor. L-3, 4-dihydroxyphenylaline (L-DOPA), and its metabolites (acid 3, 4-dihydroxyphenylacetic, DOPAC; homovanillic acid, HVA) 24 hours before and 48 hours following administration of a non ionic and hyposmolar (lopromide) CA in patients (n = 10; average age 61.3 +/- 4.3 years) submitted to coronary angiography. Urinary excretion of noradrenalin, a marker of sympathetic activity, was also assessed during the same period. The deputation of creatinine (Ccr) and the urinary excretion of sodium (UNa+) lowered after the administration of the CA (Ccr, 79.2 +/- 10.2 vs 72.2 +/- 9.6 ml/min/1.73 m2, p < 0.05; UNa+, 112.8 +/- 9.6 vs 61.7 +/- 25.1 mmol/24 h, p < 0.05). On the contrary, the urinary excretion of potassium increased in the period of 24 h following the administration of the AC (31.7 +/- 5.2 vs 103.8 +/- 10.8 mmol/24 h, p < 0.05). There was an increase in the urinary excretion of dopamine as well as noradrelalin during the 24 hour period following the administration of the CA (dopamine, 1260.2 +/- 196.8 vs 1571.5 +/- 170.2 mmol/24 h p < 0.5; noradrenalin, 186 +/- 36.6 mmol/24 h, p < 0.05). On the contrary, the urinary excretion of L-DOPA lowered after the administration of the CA (115.4 +/- 25.5 vs 80.5 +/- 13.2 mmol/24 h, p < 0.05). These results conditioned an increase in the dopamine/L-DOPA ratio in the urine, after the administration of the CA (12.2 +/- 1.5 vs 22.2 +/- 4.5 mmol/24 h, p < 0.05). In conclusion, the administration of CA is accompanied by an increase in the renal production of dopamine which, in these conditions, may act as a compensatory natriuretic hormone.
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Affiliation(s)
- J Santos
- Serviço de Nefrologia da Faculdade de Medicina do Porto, Portugal
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33
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Azevedo J, Coucelo J, Jacques AK, Arroja I, Araújo V. [Variation in the calculation of the left ventricular mass using three-dimensional echocardiography]. Rev Port Cardiol 1998; 17:81-4. [PMID: 9558959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- J Azevedo
- Laboratório de Ecocardiografia, Hospital Central de Egas Moniz, Lisboa, Portugal
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34
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Rodrigues PO, Azevedo J, Coucelo J, Andrade ML, Pereira MI, Arroja I, Gil I, Silva D, Vaz T, Duarte S, Araújo V, Guerreiro L, Morais MG. [Ischemic cardiopathy. Isomorphic forms of apolipoprotein A and their relation to coronary disease]. Rev Port Cardiol 1997; 16:991-7. [PMID: 9522620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- P O Rodrigues
- Departamento de Bioquimica da FCM/UNL, Centro de Lípidos da UNL (JNICT), Lisboa
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35
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Azevedo J, Arroja I, Custódio H, Jacques AK, Coucelo J, Araújo V. [Quantitative analysis of intracavitary stasis of the left atrial appendage in relation to Doppler flow]. Rev Port Cardiol 1997; 16:919-22. [PMID: 9477727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- J Azevedo
- Laboratório de Ecocardiografia, Hospital Central de Egas Moniz, Lisboa, Portugal
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36
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Campos J, Sá I, Silva A, Medeiros R, Vouga L, Araújo V, Garcia JM, Cerqueira-Gomes M. [Utilization and practical significance of superficial electrocardiogram in the location of atrio-ventricular accessory pathways]. Rev Port Cardiol 1997; 16:301-6. [PMID: 9288989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- J Campos
- Serviço de Cardiologia, Hospital de S. João, Porto
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37
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Coucelo J, Joaquim N, Carreira G, Coucelo J, Azevedo J, Jacques A, Alves J, Arroja I, Araújo V. [The cyclic variation of the 2-dimensional echocardiographic densitometry spectrum as a function of the phase of the cardiac cycle. Experimental work and its clinical application in arterial hypertension]. Rev Port Cardiol 1997; 16:63-7. [PMID: 9115779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- J Coucelo
- U.C.T.R.A., Universidade do Algarve, Faro
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38
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Arroja I, Coucelo J, Jacques A, Custódio H, Azevedo J, Araújo V. [Arterial hypertension and the predisposing factors of left atrial dilatation. A prospective 2-dimensional echocardiographic analysis and ambulatory blood pressure monitoring]. Rev Port Cardiol 1997; 16:69-74. [PMID: 9115780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- I Arroja
- Laboratório de Ecocardiografia, Hospital Central de Egas Moniz, Lisboa
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39
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Custódio H, Jacques AK, Azevedo J, Serrador MJ, Andrade C, Alves J, Amado P, Arroja I, Araújo V. [Pulsed Doppler flow of the left atrial appendage and cerebral vascular accident. Multiplanar transesophageal echocardiographic study]. Rev Port Cardiol 1996; 15:813-7. [PMID: 9019146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Affiliation(s)
- H Custódio
- Laboratório de Ecocardiografia, Hospital Central de Egas Moniz, Lisboa, Portugal
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40
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Azevedo J, Coucelo J, Jacques AK, Arroja I, Araújo V. [Relation of left ventricular mass, volume and systolic function in three-dimensional transesophageal echocardiography. Multifactorial linear regression analysis]. Rev Port Cardiol 1996; 15:819-24. [PMID: 9019147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Affiliation(s)
- J Azevedo
- Laboratório de Ecocardiografia, Hospital Central de Egas Moniz, Portugal
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41
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Arsénio A, Carmona J, Araújo V. [Clinical usefulness of high-resolution electrocardiography]. Rev Port Cardiol 1996; 15:331-41. [PMID: 8814676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- A Arsénio
- Serviço de Cardiologia, Hospital Egas Moniz, Lisboa
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42
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Carmona J, Amado P, Castanheira J, Nazaré J, Araújo V. [Paroxysmal atrial fibrillation and flutter and "occult" arterial hypertension. The importance of the ambulatory monitoring of the blood pressure. Apropos 2 cases]. Rev Port Cardiol 1993; 12:865-70, 806. [PMID: 8286135] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The authors describe two hypertensive patients with paroxysmal auricular flutter or fibrillation. The arterial hypertension was suspected because of a hypertensive response in a treadmill stress test, confirmed by a 24-hour blood pressure ambulatory monitoring and there was no damage in target organs. They focus that auricular flutter/fibrillation may be related to "occult hypertension".
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Affiliation(s)
- J Carmona
- Serviço de Cardiologia, Hospital Egas Moniz, Lisboa
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43
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Arroja I, Azevedo J, Jacques A, Oliveira A, Amado P, do Valle JC, Marques JC, Araújo V. [A pulsed Doppler study of left atrial and ventricular inflow in 2 populations of normotensive and hypertensive subjects]. Rev Port Cardiol 1993; 12:827-39, 804. [PMID: 8286131] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
OBJECTIVE Comparative analysis of left atrial and left ventricle Doppler inflow patterns in patients with essential systemic mild to moderate hypertension and normal global left ventricular systolic function. PATIENTS A group of out patients with the diagnosis of hypertension referred to the Echocardiographic Laboratory of Egas Moniz Hospital in Lisbon. SETTING Echocardiographic Doppler prospective study. MATERIAL AND METHODS We studied a group of 50 patients with the diagnosis of mild to moderate arterial hypertension (Group H), which was compared with a population of 50 normal subjects (Group N). In each case we analysed the pulsed Doppler flow of the right upper pulmonary vein and the diastolic inflow of the left ventricular cavity. We calculated the peak velocities and time velocity integrals of the systolic, diastolic and atrial contraction waves of the pulmonary venous flow and also the systo-diastolic velocity and time velocity integral ratios. In the transmitral Doppler flow analysis we evaluated the peak velocities and time velocity integrals of the early (E wave) and late (A wave) waves, and their time velocity and velocity ratio. We assessed also the isovolumic relaxation time and left ventricular mass index. RESULTS In groups N and H the peak velocity of the pulmonary venous flow systolic wave was 0.53 +/- 0.15 cm/sec and 0.75 +/- 0.10 cm/sec (p = 0.01), diastolic wave was 0.50 +/- 0.10 cm/sec and 0.41 +/- 0.09 cm/sec (p = 0.03) and atrial contraction wave was 0.18 +/- 0.03 cm/sec and 0.35 +/- 0.08 (p = 0.001), with a systo-diastolic ratio of 1.06 +/- 0.10 and 1.83 +/- 0.10 (p < 0.001), respectively. In these two groups the time velocity integral of the pulmonary venous flow systolic wave was 14.4 +/- 2.6 cm and 17.8 +/- 1.8 cm (p = 0.001), the diastolic wave was 12.5 +/- 3.2 cm and 9.3 +/- 1.3 cm (p = 0.05) and the atrial contraction wave was 4.4 +/- 0.07 cm (p = 0.001), with a systo-diastolic ratio of 1.1 +/- 0.16 and 1.9 +/- 0.12 (p < 0.001), respectively. For the group H and considering the three subgroups, hypertensive patients without anatomical or functional alterations, with isolated diastolic dysfunction and with left ventricular hypertrophy associated to diastolic dysfunction, the velocity systo-diastolic ratio was 1.08 +/- 0.12, 1.57 +/- 0.08 (p < 0.01) and 2.4 +/- 0.08 (p < 0.01) and 2.4 +/- 0.08 (p < 0.001), the systo-diastolic time velocity integral ratio was 1.22 +/- 0.17, 1.72 +/- 0.13 (p < 0.01) and 2.4 +/- 0.15 (p < 0.001), the peak velocity of the atrial contraction wave was 0.28 +/- 0.07, 0.3 +/- 0.08 (p < 0.01) and 0.43 +/- 0.07 (p < 0.001) and its time velocity integral was 4.6 +/- 0.06 cm, 5.6 +/- 0.07 cm (p < 0.01) and 7.0 +/- 0.08 cm (p < 0.001). CONCLUSIONS Pulsed Doppler study of pulmonary venous flow is significantly abnormal in patients with arterial hypertension. This abnormal pulmonary venous flow pattern has a close relationship with structural and functional alterations of the left ventricle. Combined analysis of the pulsed Doppler inflow at these two cardiac anatomical levels is fundamental to understand the pathophysiology of hypertensive heart disease.
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Affiliation(s)
- I Arroja
- Laboratório de Ecocardiografia, Hospital Egas Moniz, Lisboa
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Azevedo J, Arroja I, Jacques A, Santos I, Amado P, Marques JC, Araújo V. [A double ambulatory product (blood pressure and heart rate), mild arterial hypertension and left ventricular hypertrophy]. Rev Port Cardiol 1993; 12:663-73, 602. [PMID: 8352987] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE Analysis of the different ambulatory blood pressure monitoring derived parameters in terms of cardiac structural repercussion, in patients with isolated systolic and mild systolic-diastolic hypertension. SETTING Prospective study involving simultaneously the two-dimensional echocardiographic technique and the ambulatory blood pressure monitoring method. PATIENTS Out patients regularly observed in the Cardiology Department of Egas Moniz Hospital in Lisbon, were included in our study. MATERIAL AND METHODS We studied 50 hypertensive patients who fulfilled the inclusion criteria of our study (Group H) and 20 subjects who were the normal aged matched population (Group N). through ambulatory blood pressure monitoring, in each individual of these two groups, we considered the mean values of daily systolic blood and diastolic blood pressure, heart rate and ambulatory heart rate blood pressure product. Through two-dimensional echocardiography we calculated the left ventricular mass and the correspondent index corrected for the body surface. RESULTS In the H group an comparing to the N group, the mean value of the daily systolic blood pressure was 112 +/- 6 mmHg and 159 +/- 8 mmHg (p < 0.001) respectively, diastolic blood pressure was 60 +/- 5 mmHg and 75 +/- 7 mmHg respectively (p < 0.001), heart rate blood pressure product was 6720 +/- 580 and 12561 +/- 678 (p < 0.0001) and of the left ventricular mass index was 109 +/- 10 gm2 and 145 +/- 7 g/m2 (p < 0.001). The correlation coefficient between the left ventricular mass index and mean systolic, diastolic blood pressures and ambulatory heart rate blood pressure product was 0.60 (p < 0.01), 0.45 (p = NS) and 0.73 (p < 0.001) respectively. CONCLUSIONS In the evaluation of the increase in left ventricular mass, ambulatory heart rate blood pressure product is a more accurate parameter compared to the mean daily blood pressure values. Ambulatory blood pressure monitoring is a method with a great potential and clinical application, when studying patients with hypertension diagnosis.
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Affiliation(s)
- J Azevedo
- Laboratório de Ecocardiografia, Hospital Egas Moniz, Lisboa
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Azevedo J, Arroja I, Jacques A, Amado P, Marques JC, Araújo V. [The indices of pressure variability by noninvasive ambulatory monitoring of the arterial pressure. A study in 2 normotensive and hypertensive populations]. Rev Port Cardiol 1993; 12:625-33, 600. [PMID: 8352982] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE Analysis of different indices of blood pressure (BP) variability using the ambulatory blood pressure monitoring (ABPM) method in two populations of hypertensive patients (HTA Group) and normotensive volunteers (NOR Group). SETTING Noninvasive prospective ambulatory study to assess the alterations of the circadian blood pressure profile through ABPM indices of blood pressure variability. PATIENTS Patients with the diagnosis of essential arterial hypertension referred for clinical investigation to the Cardiology Department of Egas Moniz Hospital in Lisbon. MATERIAL AND METHODS 40 hypertensive patients (HTA Group) and 30 normal subjects (NOR Group) were included in this study. We calculated the short and long term variability indices. The short term variability indices were the casual and mean immediate BP deviation, percentage of BP peaks and BP peak relative deviation and maximal range variation. Some clinical and general factors considered were namely age, gender, height, weight, body area and index, mean and casual systolic-diastolic blood pressure. RESULTS Concerning systolic blood pressure in hypertension Vs normal groups respectively, the casual BP deviation was 15 +/- 4 mmHg and 7 +/- 4 mmHg (p 0.003), the mean immediate BP deviation was 18.5 +/- 4 mmHg and 7.5 +/- 3 mmHg (p 0.002), the percentage of BP peaks was 27 +/- 6% (p < 0.001), the percentage of BP peak area was 29 +/- 7% and 6 +/- 3% (p 0.001) and the percentage of relative deviation was 14 +/- 4% and 8 +/- 3% (p 0.03). For diastolic blood pressure all differences were not statistically significant between the two groups and the same happened for systolic blood pressure in relation to standard deviation and maximal range variation. Among these parameters and general and clinical characteristics, the systolic mean and casual blood pressure level showed an acceptable correlation with mean immediate deviation (R = 0.54/0.49), percentage of BP peaks (R = 0.56/0.49) and percentage of BP peak area (R = 0.60/0.53). CONCLUSIONS Blood pressure variability can be adequately evaluated through the method of ambulatory blood pressure monitoring. Some variability indices can be extracted from the 24 hour curves of ambulatory blood pressure monitoring. Long-term variability indices are not related to the level of blood pressure. In the hypertension group we found a greater variability concerning short term indices, namely immediate deviation, percentage and are of peak curve.
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Affiliation(s)
- J Azevedo
- Serviço de Cardiologia, Hospital Egas Moniz, Lisboa
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Arsénio A, Coucelo J, Marques JC, Araújo V. [Complete auriculo-ventricular block during therapy with carbamazepine]. ACTA MEDICA PORT 1990; 3:383-5. [PMID: 2089863] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The authors describe the case of a complete AV block probably induced by carbamazepine. They also review cases described in the literature and suggest some preventive measures before beginning therapy with carbamazepine, mainly in patients over sixty-five years of age, with or without known cardiovascular pathology.
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Affiliation(s)
- A Arsénio
- Serviço de Cardiologia, Hospital Egas Moniz, Lisboa
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Agapito AF, Branco LM, Patrício L, Ferreira ML, Pereira AJ, Oliveira JA, Araújo V, Vargas JM, Magalhães MP, Candido JL. [Surgery for infectious endocarditis]. Rev Port Cardiol 1990; 9:683-6. [PMID: 2257155] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE to assess the experience of both departments in the surgical therapy of infective endocarditis--indications and results. DESIGN retrospective analysis on clinical data, surgery and follow up. SETTING patients (pts) studied in the Cardiology Department and Cardiothoracic Surgery Department of the Santa Marta Hospital in Lisbon. PATIENTS AND INTERVENTIONS sequential sample of 28 patients (11 females, 17 males, mean age 39 years) submitted to surgery between 1978 and 1987 for infective endocarditis. MEASUREMENTS AND RESULTS the indications for surgery were: heart failure (15 pts), "resistant" infection (8 pts), emboli (4 pts) and "large" vegetations shown by echocardiography (2 pts). Surgical mortality -27.5%. Four patients developed periprosthetic leaks. There was an improvement in functional class of the survivals. CONCLUSION the indications for surgery were heart failure, "resistant" infection, emboli and "large" vegetations. There was a high surgical mortality, namely in the patients with resistant infection, severe heart failure and periprosthetic leaks. In the follow up there was a net improvement of functional class. The morbidity is due to the periprosthetic leaks, which induced most of the reoperations.
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Affiliation(s)
- A F Agapito
- Serviço de Cardiologia, Hospital de Santa Marta de Lisboa
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Ceia F, Fonseca C, Pires M, Araújo V, Sales Luís A. [Cardiac insufficiency. New physiopathological approaches and therapeutic implications]. ACTA MEDICA PORT 1985; 6:31-7. [PMID: 3984787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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