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Vargas-Robles D, Morales N, Rodríguez I, Nieves T, Godoy-Vitorino F, Alcaraz LD, Pérez ME, Ravel J, Forney LJ, Domínguez-Bello MG. Changes in the vaginal microbiota across a gradient of urbanization. Sci Rep 2020; 10:12487. [PMID: 32719372 PMCID: PMC7385657 DOI: 10.1038/s41598-020-69111-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 06/17/2020] [Indexed: 12/27/2022] Open
Abstract
The vaginal microbiota of healthy women typically has low diversity, which increases after perturbations. Among these, lifestyle associated with certain sexual and antimicrobial practices may be associated with higher diversity. To test this hypothesis, we characterized the vaginal microbiota in the cervicovaginal and introital sites in sexually active Amerindians (N = 82) spanning urbanization, and in urban mestizos (N = 29), in the Venezuelan Amazonas. HPV status was also considered. Sampling was performed in an urban gradient from remote villages to a town, and women were individually classified by the degree of urbanization (low, medium, and high). Amerindian cervicovaginal and introital microbiota diversity were not associated with major changes in urbanization or ethnicity. There was a non-significant trend of increased diversity with urbanization, with a few taxa found overrepresented in urban Amerindians (Brevibacterium linens and Peptoniphilus lacrimalis) or mestizos (Mobiluncus mulieris and Prevotella sp.). Among all women, cervicovaginal and introital samples clustered, respectively, in four and two community state types (CSTs), where most profiles were dominated by Lactobacillus iners, Gardnerella vaginalis or were highly diverse profiles. HPV status did not associate with microbial diversity. In conclusion, no association was found between urban level and the vaginal microbiome in Amerindian women, and little difference was found between ethnicities. L. iners and high diversity profiles, associated with vaginal health outcomes, prevail in these populations.
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Affiliation(s)
- Daniela Vargas-Robles
- Department of Biology, University of Puerto Rico, San Juan, PR, USA.,Servicio Autónomo Centro Amazónico de Investigación y Control de Enfermedades Tropicales Simón Bolívar, MPPS, Puerto Ayacucho, Venezuela
| | - Natalia Morales
- Servicio Autónomo Centro Amazónico de Investigación y Control de Enfermedades Tropicales Simón Bolívar, MPPS, Puerto Ayacucho, Venezuela
| | - Iveth Rodríguez
- Ministerio del Poder Popular Para La Salud, Caracas, Venezuela
| | - Tahidid Nieves
- Servicio Autónomo Centro Amazónico de Investigación y Control de Enfermedades Tropicales Simón Bolívar, MPPS, Puerto Ayacucho, Venezuela
| | - Filipa Godoy-Vitorino
- Department of Microbiology & Medical Zoology, School of Medicine, University of Puerto Rico, San Juan, PR, USA
| | - Luis David Alcaraz
- Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - María-Eglée Pérez
- Department of Mathematics, University of Puerto Rico, San Juan, PR, USA
| | - Jacques Ravel
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, USA
| | - Larry J Forney
- Department of Biological Sciences and the Institute for Bioinformatics and Evolutionary Studies, University of Idaho, Moscow, ID, USA
| | - María Gloria Domínguez-Bello
- Department of Medicine, New York University School of Medicine, New York, USA. .,Departments of Biochemistry and Microbiology and of Anthropology, Rutgers University, New Brunswick, USA.
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Abstract
The gap in educational attainment separating underrepresented minorities from Whites and Asians remains wide. Such a gap has significant impact on workforce diversity and inclusion among cross-cutting Biomedical Data Science (BDS) research, which presents great opportunities as well as major challenges for addressing health disparities. This article provides a brief description of the newly established National Institutes of Health Big Data to Knowledge (BD2K) diversity initiatives at four universities: California State University, Monterey Bay; Fisk University; University of Puerto Rico, Río Piedras Campus; and California State University, Fullerton. We emphasize three main barriers to BDS careers (ie, preparation, exposure, and access to resources) experienced among those pioneer programs and recommendations for possible solutions (ie, early and proactive mentoring, enriched research experience, and data science curriculum development). The diversity disparities in BDS demonstrate the need for educators, researchers, and funding agencies to support evidence-based practices that will lead to the diversification of the BDS workforce.
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Affiliation(s)
| | | | | | | | - Xinzhi Zhang
- National Institutes of Health, National Institute on Minority Health and Health Disparities
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Ruiz-Diaz CP, Toledo-Hernandez C, Mercado-Molina AE, Pérez ME, Sabat AM. The role of coral colony health state in the recovery of lesions. PeerJ 2016; 4:e1531. [PMID: 26788423 PMCID: PMC4715433 DOI: 10.7717/peerj.1531] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 12/03/2015] [Indexed: 11/20/2022] Open
Abstract
Coral disease literature has focused, for the most part, on the etiology of the more than 35 coral afflictions currently described. Much less understood are the factors that underpin the capacity of corals to regenerate lesions, including the role of colony health. This lack of knowledge with respect to the factors that influence tissue regeneration significantly limits our understanding of the impact of diseases at the colony, population, and community level. In this study, we experimentally compared tissue regeneration capacity of diseased versus healthy fragments of Gorgonia ventalina colonies at 5 m and 12 m of depth. We found that the initial health state of colonies (i.e., diseased or healthy) had a significant effect on tissue regeneration (healing). All healthy fragments exhibited full recovery regardless of depth treatment, while diseased fragments did not. Our results suggest that being diseased or healthy has a significant effect on the capacity of a sea fan colony to repair tissue, but that environmental factors associated with changes in depth, such as temperature and light, do not. We conclude that disease doesn’t just compromise vital functions such as growth and reproduction in corals but also compromises their capacity to regenerate tissue and heal lesions.
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Affiliation(s)
- Claudia P Ruiz-Diaz
- Environmental Sciences, University of Puerto Rico, San Juan, Puerto Rico; Sociedad Ambiente Marino SAM, San Juan, Puerto Rico
| | | | - Alex E Mercado-Molina
- Sociedad Ambiente Marino SAM, San Juan, Puerto Rico; Department of Biology, University of Puerto Rico, San Juan, Puerto Rico
| | - María-Eglée Pérez
- Department of Mathematics, University of Puerto Rico, San Juan, Puerto Rico; Center for Tropical Ecology and Conservation, CATEC, Río Piedras Campus, University of Puerto Rico, San Juan, Puerto Rico
| | - Alberto M Sabat
- Department of Biology, University of Puerto Rico , San Juan , Puerto Rico
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Mérida F, Chiu-Lam A, Bohórquez AC, Maldonado-Camargo L, Pérez ME, Pericchi L, Torres-Lugo M, Rinaldi C. Optimization of synthesis and peptization steps to obtain iron oxide nanoparticles with high energy dissipation rates. J Magn Magn Mater 2015; 394:361-371. [PMID: 26273124 PMCID: PMC4530527 DOI: 10.1016/j.jmmm.2015.06.076] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Magnetic Fluid Hyperthermia (MFH) uses heat generated by magnetic nanoparticles exposed to alternating magnetic fields to cause a temperature increase in tumors to the hyperthermia range (43-47 °C), inducing apoptotic cancer cell death. As with all cancer nanomedicines, one of the most significant challenges with MFH is achieving high nanoparticle accumulation at the tumor site. This motivates development of synthesis strategies that maximize the rate of energy dissipation of iron oxide magnetic nanoparticles, preferable due to their intrinsic biocompatibility. This has led to development of synthesis strategies that, although attractive from the point of view of chemical elegance, may not be suitable for scale-up to quantities necessary for clinical use. On the other hand, to date the aqueous co-precipitation synthesis, which readily yields gram quantities of nanoparticles, has only been reported to yield sufficiently high specific absorption rates after laborious size selective fractionation. This work focuses on improvements to the aqueous co-precipitation of iron oxide nanoparticles to increase the specific absorption rate (SAR), by optimizing synthesis conditions and the subsequent peptization step. Heating efficiencies up to 1,048 W/gFe (36.5 kA/m, 341 kHz; ILP = 2.3 nH·m2·kg-1) were obtained, which represent one of the highest values reported for iron oxide particles synthesized by co-precipitation without size-selective fractionation. Furthermore, particles reached SAR values of up to 719 W/gFe (36.5 kA/m, 341 kHz; ILP = 1.6 nH·m2·kg-1) when in a solid matrix, demonstrating they were capable of significant rates of energy dissipation even when restricted from physical rotation. Reduction in energy dissipation rate due to immobilization has been identified as an obstacle to clinical translation of MFH. Hence, particles obtained with the conditions reported here have great potential for application in nanoscale thermal cancer therapy.
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Affiliation(s)
- Fernando Mérida
- Deparment of Chemical Engineering, University of Puerto
Rico. Mayagüez, P.O. Box 9046, Mayagüez, PR 00680
| | - Andreina Chiu-Lam
- Department of Chemical Engineering, University of Florida,
P.O. Box 116005, Gainesville, FL 32611-6005
| | - Ana C. Bohórquez
- J. Crayton Pruitt Family Department of Biomedical
Engineering, University of Florida, P.O. Box 116131, Gainesville, FL
32611-6131
| | - Lorena Maldonado-Camargo
- Department of Chemical Engineering, University of Florida,
P.O. Box 116005, Gainesville, FL 32611-6005
| | - María-Eglée Pérez
- Department of Mathematics, University of Puerto Rico,
Río Piedras. P.O.Box 70377 San Juan, PR 00936-8377
| | - Luis Pericchi
- Department of Mathematics, University of Puerto Rico,
Río Piedras. P.O.Box 70377 San Juan, PR 00936-8377
| | - Madeline Torres-Lugo
- Deparment of Chemical Engineering, University of Puerto
Rico. Mayagüez, P.O. Box 9046, Mayagüez, PR 00680
| | - Carlos Rinaldi
- Department of Chemical Engineering, University of Florida,
P.O. Box 116005, Gainesville, FL 32611-6005
- J. Crayton Pruitt Family Department of Biomedical
Engineering, University of Florida, P.O. Box 116131, Gainesville, FL
32611-6131
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Burkett AM, Rathburn AE, Pérez ME, Levin LA, Cha H, Rouse GW. Phylogenetic placement of Cibicidoides wuellerstorfi (Schwager, 1866) from methane seeps and non-seep habitats on the Pacific margin. Geobiology 2015; 13:44-52. [PMID: 25407814 DOI: 10.1111/gbi.12118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 10/10/2014] [Indexed: 06/04/2023]
Abstract
Benthic foraminifera are among the most abundant groups found in deep-sea habitats, including methane seep environments. Unlike many groups, no endemic foraminiferal species have been reported from methane seeps, and to our knowledge, genetic data are currently sparse for Pacific deep-sea foraminifera. In an effort to understand the relationships between seep and non-seep populations of the deep-sea foraminifera Cibicidoides wuellerstorfi, a common paleo-indicator species, specimens from methane seeps in the Pacific were analyzed and compared to one another for genetic similarities of small subunit rDNA (SSU rDNA) sequences. Pacific Ocean C. wuellerstorfi were also compared to those collected from other localities around the world (based on 18S gene available on Genbank, e.g., Schweizer et al., 2009). Results from this study revealed that C. wuellerstorfi living in seeps near Costa Rica and Hydrate Ridge are genetically similar to one another at the species level. Individuals collected from the same location that display opposite coiling directions (dextral and sinstral) had no species level genetic differences. Comparisons of specimens with genetic information available from Genbank (SSU rDNA) showed that Pacific individuals, collected for this study, are genetically similar to those previously analyzed from the North Atlantic and Antarctic. These observations provide strong evidence for the true cosmopolitan nature of C. wuellerstorfi and highlight the importance of understanding how these microscopic organisms are able to maintain sufficient genetic exchange to remain within the same species between seep and non-seep habitats and over global distances.
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Affiliation(s)
- A M Burkett
- Earth and Environmental Systems, Indiana State University, Terre Haute, IN, USA
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Fúquene J, Pérez ME, Pericchi LR. An alternative to the Inverted Gamma for the variances to modelling outliers and structural breaks in dynamic models. BRAZ J PROBAB STAT 2014. [DOI: 10.1214/12-bjps207] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
We put forward an adaptive alpha which changes with the amount of sample information. This calibration may be interpreted as a Bayes/non-Bayes compromise, and leads to statistical consistency. The calibration can also be used to produce confidence intervals whose size take in consideration the amount of observed information.
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Affiliation(s)
- María-Eglée Pérez
- Department of Mathematics, University of Puerto Rico, Rio Piedras Campus, Box 70377, San Juan, PR 00936-8377, Puerto Rico
| | - Luis Raúl Pericchi
- Department of Mathematics, University of Puerto Rico, Rio Piedras Campus, Box 70377, San Juan, PR 00936-8377, Puerto Rico
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Pérez ME, Barberá R, Domínguez F, Otero O, Gutiérrez M, Falero-Diaz G, Sotolongo F, Sierra G. Development and characterization of a murine monoclonal antibody specific for the P1.15 PorA proteins from vaccine strain B:4,7:P1.19,15 of Neisseria meningitidis. Hybridoma (Larchmt) 2006; 25:243-7. [PMID: 16934022 DOI: 10.1089/hyb.2006.25.243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 11/13/2022]
Abstract
Neisseria meningitidis isolates are conventionally classified by serosubtyping, which characterizes the reactivities of the PorA outer membrane protein variable-region epitopes with monoclonal antibodies (MAbs). New murine hybridomas, secreting specific MAbs against PorA of N. meningitidis serogroup B, were generated using conventional hybridoma procedures. Using outer membrane protein as antigen, we obtained two positive clones, and one of them we characterized. This MAb reacted, on whole-cell enzyme-linked immunosorbent assay (ELISA) and immunoblotting, only with strain subtype P1.15 and its IgG2b isotype. This MAb demonstrated bactericidal activity against the homologous strain in the presence of human complement.
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Affiliation(s)
- M E Pérez
- Centro de Investigación y Producción de Vacunas y Sueros, Instituto Finlay, La Habana, Cuba.
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Valdez E, del Carmen Martínez M, Gómez A, Cedillo R, Arellano J, Pérez ME, Ramos F, Morán P, González E, Valenzuela O, Melendro EI, Ramiro M, Kretschmer R, Muñoz O, Ximénez C. HLA characterization in adult asymptomatic cyst passers of Entamoeba histolytica/E. dispar. Parasitol Res 1999; 85:833-6. [PMID: 10494810 DOI: 10.1007/s004360050641] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 10/28/2022]
Abstract
The present work aimed at studying the possible association of HLA antigens with Entamoeba histolytica/E. dispar asymptomatic infection in a Mexican mestizo population. A case-control design was selected for evaluation of the role of genetic markers in parasite infection. For this purpose the HLA-A, HLA-B, and HLA-DR profiles of a population of asymptomatic E. histolytica/E. dispar adult cyst passers (cases) and a corresponding nonparasitized adult group (controls) followed for 12 months were identified. Entamoeba species were identified through zymodeme patterns and/or amplification of species-specific DNA sequences. A healthy, nonparasitized group of individuals was included as a control. Our results show that apparently, no specific HLA marker is associated with the asymptomatic cyst passers' condition. These findings have to be added to previous results in which, in contrast to a demonstrated association between HLA-DR3 and amebic liver abscess in Mexican mestizo adults and infants, no significant association with amebic rectocolitis was found.
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Affiliation(s)
- E Valdez
- Hospital de Pediatría Centro Médico Siglo XXI, IMSS, México
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González I, Niebla A, Lemus M, González L, Iznaga IO, Pérez ME, Vallin C. Ecological approach of macrolide-lincosamides-streptogramin producing actinomyces from Cuban soils. Lett Appl Microbiol 1999; 29:147-50. [PMID: 10530035 DOI: 10.1046/j.1365-2672.1999.00580.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [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: 11/20/2022]
Abstract
We report in this study the frequency of Streptomyces strains to produce macrolide-lincosamide-streptogramin (MLS) antibiotics isolated from Cuban soils. The screening assay is based on the induction of MLS-resistance phenotype in a clinical isolated strain of Staphylococcus aureus S-18. Our results suggest that of 800 Streptomyces strains isolated from different soil samples, 6% were positives in the screening test used. The ferralitic red soil from Pinar del Río (north) provided the major percentage (3.6%) of MLS producing strains. The other soil samples tested belonging to Guira de Melena and Bauta in Havana, Matanzas City, Topes De Collantes (Villa Clara), and Soroa Mountains (Pinar del Rio) hill reached very low percentages.
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Affiliation(s)
- I González
- Biotechnology Department, Centre of Pharmaceutical Chemistry, Cubanacán, Havana, Cuba.
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Falero G, Rodríguez BL, Valmaseda T, Pérez ME, Pérez JL, Fando R, Robert A, Campos J, Silva A, Sierra G, Benítez JA. Production and characterization of a monoclonal antibody against mannose-sensitive hemagglutinin of Vibrio cholerae. Hybridoma (Larchmt) 1998; 17:63-7. [PMID: 9523239 DOI: 10.1089/hyb.1998.17.63] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [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: 02/06/2023]
Abstract
We have generated murine monoclonal antibodies (MAb) against Vibrio cholerae mannose-sensitive hemagglutinin (MSHA) using conventional hybridoma procedures. Seven hybridomas were obtained and one characterized. Hybridoma 2F12/F1 secreted an antibody of the IgG3 type that reacted with a 17-kDa antigen corresponding to the product of the mshA gene. This MAb inhibited mannose-sensitive agglutination of chicken erythrocytes by EL tor and O139 vibrios. Vibrios expressing MSHA activity inhibited binding of the antibody secreted by 2F12/F1 to MSHA-coated microtiter plates.
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Affiliation(s)
- G Falero
- Departamento de Anticuerpos Monoclonales, Instituto Finlay, La Habana, Cuba
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Domínguez-Bello MG, Michelangeli F, Romero R, Beker B, Lara D, Morera C, Vezga MA, Spardella V, Guelrud M, Pérez ME, Pericchi LR. Modification of Christensen urease test as an inexpensive tool for detection of Helicobacter pylori. Diagn Microbiol Infect Dis 1997; 28:149-52. [PMID: 9294705 DOI: 10.1016/s0732-8893(97)00041-2] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
About half the world population is infected with Helicobacter pylori. Most live in developing countries where clinical studies face the constraints of high costs of imported rapid diagnostic tests. In this work, we describe and validate a simple local urease test (LUT) to determine the presence of the bacterium in gastric biopsies, and report the incidence of infection among symptomatic patients in Caracas, Venezuela. Statistical comparison of LUT and CLOtest (Delta West, Bentley, Australia) (N = 216 patients) showed that the probability of 95% agreement between the two test was 0.936. Overall incidence of infection determined by the LUT was 65% (N = 229), and it was higher in patients from public (72%; N = 153) than from private (50%; N = 76) hospitals (p = .001). Therefore, the incidence of infection differs in two socioeconomic groups that coexist in the same city. LUT may represent an affordable tool in clinical studies needed to identify social factors that increase the risk of infection by H. pylori.
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Affiliation(s)
- M G Domínguez-Bello
- Laboratorio de Fisiología Gastrointestinal, Centro de Biofísica y Bioquímica, IVIC, Caracas, Venezuela
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Servera E, Marín J, Pérez ME, Giménez M. [Ventilatory muscle training]. Arch Bronconeumol 1994; 30:94-100. [PMID: 8136998 DOI: 10.1016/s0300-2896(15)31126-1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- E Servera
- Servicio de Neumología, Hospital Clínico Universitario, Valencia
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Abstract
This study aimed to define the acute electrophysiological effects of the perilymphatic perfusion of streptomycin in the sensory apparatus of the semicircular canals of the frog. The ampullary DC potential, the vestibular nerve multiunit discharge, the nerve DC potential and the unitary EPSP activity were recorded in isolated semicircular canals of the frog (Rana esculenta L). The results demonstrated that perilymphatic microperfusion of streptomycin (0.1, 0.3, 1 and 3 mM) reduced both resting and mechanically evoked afferent discharge, while the response of the hair cells remains unchanged. Intracellular recordings from single afferent axons showed that the reduction of the afferent discharge was mainly due to a reduction of the amplitude, but not the frequency, of the EPSPs. These results indicate that streptomycin, when applied in the fluid bathing the synaptic pole of the sensory cells, can act as an antagonist of the vestibular afferent transmitter at the postsynaptic level.
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Affiliation(s)
- G Zucca
- Istituto di Fisiologia Generale, Università di Pavia, Italy
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Abstract
It has been suggested that streptomycin might be an antagonist of the glutamate receptors, and that it selectively blocks quisqualic acid receptors. We studied whether streptomycin blocks the responses to excitatory amino acid agonists on the vestibular system primary afferents, and if it allows us to differentiate between kainate (KA) and quisqualate (QA) receptor mediated responses. The experiments were performed in the axolotl (Ambystoma tigrinum). Intra- and extracellular records of the electrical activity of semicircular canal afferent fibers were obtained. Drugs were applied by pressure ejection in volumes of 20 microliters in a 10 ml bath. Streptomycin (0.01-10 mM), induced a dose dependent reversible inhibition of the basal spike discharge of the afferent fibers. This coincided with a reduction in the amplitude of excitatory postsynaptic potentials (EPSP) recorded intracellularly in the afferent fibers. Streptomycin also blocked the excitatory action produced by KA and QA; increasing concentrations of streptomycin produced a rightward shift in the concentration-response curves for both KA and QA. This action persisted even in a high Mg2+ (10 mM), low Ca2+ (0.09 mM) Ringer solution, indicating its postsynaptic nature. These results show that streptomycin might be a non-selective excitatory amino acid (EAA) receptor antagonist.
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Affiliation(s)
- M E Pérez
- Universidad Autónoma de Puebla, Departamento de Ciencias Fisiológicas-ICUAP, Puebla Pue, México
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Herrejón A, Simó M, Chiner E, Pérez ME, Marín J. [Evaluation of transcutaneous oxygen pressure in adults with respiratory pathology]. Rev Esp Fisiol 1989; 45:123-6. [PMID: 2772389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The usefulness of the transcutaneous oxygen tension (tcPO2) in adults is under controversy. In a varied group of respiratory patients, results of the application of this method were compared with those from the arterial blood sampling method. Thirty-eight arterial oxygen tension (PaO2) and tcPO2 simultaneous determinations were made in a group of 22 patients, while in a sitting position; the tcPO2 measurements obtained (68 +/- 12.36 Torr) were significantly lower (p less than 0.05) than the PaO2 values (74 +/- 13.07 Torr). The correlation coefficient was 0.51 (p less than 0.01) with a regression line, tcPO2 = 31.58 + 0.48 PaO2. It is concluded that tcPO2 measurement does not correlate well with PaO2 and that this method cannot be always be safely applied and used in adults with respiratory diseases.
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Affiliation(s)
- A Herrejón
- Hospital Clínico Universitario, Servicio de Neumología, Valencia, España
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Juez G, Lucero E, Ventura-Juncá P, Tapia JL, Ipinza JP, Cipriano A, Aguila R, Casas I, Vives A, Pérez ME. [A computer surveillance system of the critically ill newborn infant patient]. Rev Chil Pediatr 1987; 58:490-6. [PMID: 3506221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Pérez ME. [Menarche. Gynecologic survey]. Ginecol Obstet Mex 1970; 28:355-61. [PMID: 5524813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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