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Cespedes B, Wong YS, Poblete P, Navarrete F, Mendez L, Rodriguez-Alvarez L, Cabezas J, Castro FO. 249 Lyophilised platelet-rich plasma stimulates migration of equine endometrial mesenchymal stem and epithelial cells. Reprod Fertil Dev 2022. [DOI: 10.1071/rdv35n2ab249] [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: 12/09/2022] Open
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Wong YS, Poblete P, Cespedes B, Navarrete F, Mendez L, Rodriguez-Alvarez L, Castro FO. 237 Interplay between horse adipose mesenchymal stem cells and TGF-β1 signalling results in changes in the antifibrotic properties of MSC: implications for the treatment of endometriosis. Reprod Fertil Dev 2022. [DOI: 10.1071/rdv35n2ab237] [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: 12/07/2022] Open
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Cabezas J, Caamaño D, Melo-Báez B, Silva-Ibañez P, Poblete P, Wong YS, Rodriguez-Álvarez L. 69 DNase treatment of extracellular vesicles released by in vitro-produced bovine embryos increases accuracy of preimplantation genetic testing. Reprod Fertil Dev 2021; 34:270-271. [PMID: 35231324 DOI: 10.1071/rdv34n2ab69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- J Cabezas
- Laboratory of Animal Biotechnology, Department of Animal Science, Faculty of Veterinary Science, Universidad de Concepción, Chillan, Chile
| | - D Caamaño
- Laboratory of Animal Biotechnology, Department of Animal Science, Faculty of Veterinary Science, Universidad de Concepción, Chillan, Chile
| | - B Melo-Báez
- Laboratory of Animal Biotechnology, Department of Animal Science, Faculty of Veterinary Science, Universidad de Concepción, Chillan, Chile
| | - P Silva-Ibañez
- Laboratory of Animal Biotechnology, Department of Animal Science, Faculty of Veterinary Science, Universidad de Concepción, Chillan, Chile
| | - P Poblete
- Laboratory of Animal Biotechnology, Department of Animal Science, Faculty of Veterinary Science, Universidad de Concepción, Chillan, Chile
| | - Y S Wong
- Laboratory of Animal Biotechnology, Department of Animal Science, Faculty of Veterinary Science, Universidad de Concepción, Chillan, Chile
| | - L Rodriguez-Álvarez
- Laboratory of Animal Biotechnology, Department of Animal Science, Faculty of Veterinary Science, Universidad de Concepción, Chillan, Chile
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Wong Y, Aguilera C, Méndez X, Poblete P, Mançanares A, Rodríguez-Alvarez L, Castro F. 159 Transforming growth factor β priming of horse adipose mesenchymal stem cells stimulates antifibrotic cargo in their secreted extracellular vesicles. Reprod Fertil Dev 2021; 34:317-318. [PMID: 35231367 DOI: 10.1071/rdv34n2ab159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Y Wong
- Departamento de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad de Concepción, Chillán, Chile
| | - C Aguilera
- Departamento de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad de Concepción, Chillán, Chile
| | - X Méndez
- Departamento de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad de Concepción, Chillán, Chile
| | - P Poblete
- Departamento de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad de Concepción, Chillán, Chile
| | - A Mançanares
- Departamento de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad de Concepción, Chillán, Chile
| | - L Rodríguez-Alvarez
- Departamento de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad de Concepción, Chillán, Chile
| | - F Castro
- Departamento de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad de Concepción, Chillán, Chile
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Noriega V, Sierralta F, Poblete P, Aranda N, Sotomayor-Zarate R, Prieto JC, Miranda HF. Receptors involved in dexketoprofen analgesia in murine visceral pain. J Biosci 2020; 45:94. [PMID: 32713857] [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: 06/11/2023]
Abstract
Various animal models, especially rodents, are used to study pain, due to the difficulty of studying it in humans. Many drugs that produce analgesia have been studied and there is evidence among which NSAIDs deserve to be highlighted. Dexketoprofen (DEX) provides a broad antinociceptive profile in different types of pain; therefore, this study was designed to evaluate the profile of antinociceptive potency in mice. Analgesic activity was evaluated using the acetic acid abdominal constriction test (writhing test), a chemical model of visceral pain. Dose-response curves for i.p. DEX administration (1, 3, 10, 30 and 100 mg/kg), using at least six mice in each of at least five doses, was obtained before and 30 min after pre-treatment with different pharmacological agents. Pretreatment of the mice with opioid receptor antagonists was not effective; however, the serotonin receptor antagonist and nitric oxide synthase inhibitor produce a significant increase in DEX-induced antinociception. The data from the present study shows that DEX produces antinociception in the chemical twisting test of mice, which is explained with difficulty by the simple inhibition of COX. This effect appears to be mediated by other mechanisms in which the contribution of the NO and 5-HT pathways has an important effect on DEXinduced antinociception.
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Affiliation(s)
- V Noriega
- Cardiovascular Department, Clinical Hospital, Universidad de Chile, Santiago, Chile
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Fernández M, Schultz M, Krebs A, Bermudez H, Larach G, Lyng R, Poblete P, Stein C, Delgado I, Bernier P. UP.90: Clinical Outcome of Primary Conservative Treatment for High Grade Non-Muscle Invasive Bladder Cancer. Urology 2008. [DOI: 10.1016/j.urology.2008.08.417] [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: 11/15/2022]
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Viñals F, Ascenzo R, Poblete P, Comas C, Vargas G, Giuliano A. Simple approach to prenatal diagnosis of transposition of the great arteries. Ultrasound Obstet Gynecol 2006; 28:22-5. [PMID: 16795128 DOI: 10.1002/uog.2821] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
OBJECTIVE To analyze the most relevant anomalies, seen in a sequential segmental transverse views approach to imaging the fetal heart, that provide clues to the diagnosis of complete transposition of the great arteries (TGA). METHODS We reviewed retrospectively all the cases of isolated TGA diagnosed in our center or submitted for a second opinion through the spatio-temporal image correlation (STIC) telemedicine (TELE-STIC) program. Only transverse cardiac sweeps were obtained. Digital video clips and STIC volumes were reviewed. The abnormal features on four-chamber, five-chamber, three-vessel (3V) and three vessels and trachea (3VT) views were analyzed. RESULTS The study population consisted of eight fetuses with TGA with normal extracardiac anatomy. The gestational age ranged from 13 to 32 (mean, 23) weeks. The maternal age ranged from 25 to 42 (mean, 32) years. A normal four-chamber view was seen in seven cases. Only one case demonstrated a significant ventricular septal defect. At the level of the five-chamber view a straight course arterial vessel arose from the left ventricle with lateral branches in all fetuses. In the 3V view, the ascending aorta was seen reaching more anteriorly than was the pulmonary artery in six cases. At the level of the 3VT view, two vessels (transverse aortic arch and superior vena cava) rather than three were seen in all cases. CONCLUSION Our proposed sequential segmental approach to imaging the fetal heart apparently allows, in five-chamber and 3VT views, clear and confident signs to be detected that aid diagnosis of TGA.
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Affiliation(s)
- F Viñals
- Centro AGB Ultrasonografìa, Concepción, Chile.
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Viñals F, Poblete P, Giuliano A. Spatio-temporal image correlation (STIC): a new tool for the prenatal screening of congenital heart defects. Ultrasound Obstet Gynecol 2003; 22:388-394. [PMID: 14528475 DOI: 10.1002/uog.883] [Citation(s) in RCA: 129] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
OBJECTIVE To assess the feasibility and capability of STIC acquisition, performed by a general obstetrician performing antenatal ultrasound, to visualize fetal cardiac structures in women undergoing routine obstetric ultrasound examination, in order to obtain information to confirm normality of the fetal heart during intrauterine life. METHODS This was a prospective study of one hundred fetuses with echocardiographically confirmed normal hearts and no extracardiac anomalies with gestational ages ranging between 18 and 37 weeks. A general obstetrician was invited to acquire the STIC volumes. The four-chamber view was obtained as a starting point. A standard 7.5-s acquisition time and 30 degrees angle of acquisition were used and the resulting STIC was stored for later offline analysis by a fetal echocardiologist. For each patient, the stored STIC data were first evaluated by sweeping from the initial acquisition plane, in the caudal direction and then cranially, zooming, slowing or stopping the cardiac motion to visualize views and structures. If a structure or view was rated as inadequate or not identifiable, a multiplanar three-dimensional (3D) examination of the STIC volume was taken in order to try to visualize it adequately. The rates obtained using just the STIC sweeps were compared independently, and then the 3D multiplanar study was added. RESULTS STIC acquisition was possible in all cases. The mean time required for STIC acquisition was 7.5 min. A complete cardiac examination according to the set criteria was achieved in 94.2% (95% confidence interval (CI), 90-99) of cases. We obtained a 94.2% success rate of visualizing different structures and views of the fetal heart using the STIC sweep alone (95% CI, 90-99) and 96.2% adding 3D multiplanar examination (95% CI, 92-100). CONCLUSION STIC acquisition of the fetal heart is feasible with high success rates in visualization of the principal connections. The STIC data acquired by a general obstetrician can subsequently be used by a fetal echocardiologist for prenatal confirmation of normal cardiac structure or exclusion of major cardiac malformations.
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Affiliation(s)
- F Viñals
- Centro AGB Ultrasonografía, Clínica Sanatorio Alemán, Concepción, Chile.
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Castillo O, Rossi R, Amat J, van Cauwelaert R, Poblete P, Rodríguez F, Cardemil G, Rossi R. [Laparoscopic adrenalectomy. Initial results of a Chilean experience]. Rev Med Chil 1999; 127:304-8. [PMID: 10436714] [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: 02/13/2023]
Abstract
BACKGROUND Laparoscopic adrenal approach was introduced in 1992 and is becoming the surgical method of choice for several adrenal diseases. AIM To report the initial Chilean experience in laparoscopic adrenalectomy. MATERIAL AND METHODS A retrospective review of 17 patients subjected to the surgical procedure by the authors. RESULTS The preoperative diagnosis were adenomas (8 patients), pheochromocytoma (3), cystic lesions (2), adrenal metastases (2), hyperaldosteronism (1) and a pituitary Cushing (1). The average lesion size was 5.4 cm, the operative time 2.5 hours and the hospital stay 2.5 days. Eight patients were discharged in less than 48 hours. Pain was managed with non steroidal antiinflammatory drugs in 14 patients. One subject required conversion to open surgery. Transfusions were required in complex cases with a diaphragmatic hamartoma, Cushing disease and in a combined adrenal and renal resection. One patient had to be re admitted due to a pancreatic pseudo cyst that was drained percutaneously. There have been no recurrences after a mean follow up of 2 years. CONCLUSIONS This early experience with laparoscopic adrenalectomy shows good results. A good patient selection and experience with advanced laparoscopic surgery are requisites for a successful use of this surgical technique.
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Affiliation(s)
- O Castillo
- Hospital Clínico de la Pontificia Universidad Católica de Chile, Chile
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Jurlow E, Poblete P, Marinovic MA. [Immune modulating effect of intravenous gamma globulin in a patient with overlapping syndrome]. Rev Med Chil 1998; 126:1108-11. [PMID: 9922516] [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]
Abstract
We report a 46 years old woman with a diagnosis of systemic lupus erythematosus and scleroderma overlapping syndrome. During treatment with steroids and azathioprine, the appearance of paresthesias and a progressive invalidating proximal weakness was interpreted as a steroidal myopathy. Steroidal treatment was progressively discontinued, but lupic activity and esophageal involvement exacerbated. Therefore, the use of immune modulating doses of intravenous gamma globulin (2 g/kg/total dose) was decided. The patient received this dose in two consecutive days and, 48 hours later, a notable improvement in esophageal function and general condition was verified. After six months of follow up, the disease remains inactive.
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Affiliation(s)
- E Jurlow
- Departamento de Medicina Experimental, Facultad de Medicina, Universidad de Chile, Santiago de Chile
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Lobos P, Ortega R, Vera C, Poblete P, Saéz C. [Prevalence of false seropositivity for syphilis in a population of pregnant women]. Rev Med Chil 1992; 120:1121-6. [PMID: 1341773] [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: 12/26/2022]
Abstract
A retrospective chart review of 439 pregnant women with positive syphilis serology detected with VDRL was made. One hundred twenty two women (27.7%), aged 17 to 43 years and with a gestational age ranging from 8 to 38 weeks, had false positive VDRL tests. None of these patients had a titer over 1:4 and 65% had a weakly reactive VDRL. Forty percent of women were diagnosed as having an early latent syphilis and 20% as late latent syphilis. Due to the high frequency of these later diagnoses in women with VDRL titers below 1:2, with no risk factors and negative sexual partners, post partum follow up is essential to detect cases with false positive FTA-ABs tests.
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Affiliation(s)
- P Lobos
- Servico de Dermatología, Hospital del Salvador, Santiago de Chile
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Poblete P, Jedlicky E, Litvak S. Purification and properties of tRNA nucleotidyl transferase from Musca domestica. Biochim Biophys Acta 1977; 476:333-41. [PMID: 884105 DOI: 10.1016/0005-2787(77)90297-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The enzyme tRNA nucleotidyl transferase (EC 2.7.7.25) has been highly purified from whole adult houseflies. A molecular weight of 30 000 has been determined. The enzyme requires Mg2+ and tRNA deprived of the 3' terminal sequence CCA for activity in the incorporation of AMP and CMP onto the tRNA. UMP can be incorporated instead of CMP but the latter has a higher affinity than UMP as shown by competition experiments. A complex between the enzyme and tRNA has been shown by sucrose gradient centrifugation, nitrocellulose binding and protection by tRNA against enzyme denaturation at 50 degrees C. Comparative studies with tRNA nucleotidyl transferase purified from larvae, pupae and adult insects indicate that tRNA nucleotidyl transferase from these three developmental stages have the same molecular weight, sedimentation coefficient and optimum pH while the larval enzyme differs from the pupae and adult enzymes in the elution behaviour from a DEAE-cellulose column.
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Capdevila J, Del Villar E, Poblete P. The effect of DDT treatment on the levels of DDT-dehydrochlorinase in Musca domestica. Comp Biochem Physiol B 1973; 44:441-50. [PMID: 4709587 DOI: 10.1016/0305-0491(73)90017-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Litvak S, Tarragó-Litvak L, Poblete P, Agosin M. Evidence for the DDT-induced synthesis of messenger ribonucleic acid in Triatoma infestans. Comp Biochem Physiol 1968; 26:45-56. [PMID: 5758305 DOI: 10.1016/0010-406x(68)90311-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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