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Olivares L. [Lights and shadows... "Think of Leprosy"]. Medicina (B Aires) 2022; 82:981-983. [PMID: 36571544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Liliana Olivares
- Servicio de Dermatología, Hospital de Infecciosas F. J. Muñiz, Buenos Aires, Argentina. E-mail
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Correa RM, Vladimirsky S, Heideman DAM, Coringrato M, Abeldaño A, Olivares L, Del Aguila R, Alonio LV, Snijders PJF, Picconi MA. Cutaneous human papillomavirus genotypes in different kinds of skin lesions in Argentina. J Med Virol 2016; 89:352-357. [PMID: 27420901 DOI: 10.1002/jmv.24631] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2016] [Indexed: 12/13/2022]
Abstract
Cutaneous human papillomaviruses (HPVs) comprise a large and highly heterogeneous virus group. Some of the cutaneous HPVs of the genus Beta have been suggested as a co-factor in the development of non-melanoma skin cancer (NMSC). The aim of this study was to determine cutaneous HPV prevalence and type-specific distribution in different kinds of skin lesions from Argentine patients visiting Dermatology Departments of three hospitals from Buenos Aires. A cross-sectional analysis was performed. HPV DNA was analyzed in (i) 3 patients with Epidermodysplasia verruciformis (EV) harboring benign lesions (BL) (n = 1) and squamous cell carcinoma (SCC) (n = 4); (ii) 240 non-EV patients harboring: (a) BL (n = 38), (b) Actinic Keratosis (AK) (n = 83), (c) SCC (n = 74), and (d) basal cell carcinoma (BCC) (n = 96). Detection and genotyping of 35 cutaneous HPV DNA was carried out by BGC-PCR and GP5+/6 + PCR followed by reverse line blot assay. In EV patients, Beta types were found in all lesions (5/5), including the potentially high-risk HPV types 5 and 8, mostly in multiple infections. In non-EV patients, cutaneous types were found in 50.0% of BL, 43.4% of AK, 31.1% of SCC, and 16.7% of BCC. Beta HPVs were the most frequently found in all lesions, being present in all AK and SCC cases that were positive for HPV. No type-specific correlation with lesion severity was found. In our series, a wide spectrum of cutaneous HPV types was detected in different skin lesions. A possible role for these HPVs in skin carcinogenesis deserves further study. J. Med. Virol. 89:352-357, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Rita Mariel Correa
- Department of Virology, National Institute of Infectious Diseases-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires, Argentina
| | - Sara Vladimirsky
- Department of Virology, National Institute of Infectious Diseases-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires, Argentina
| | | | | | - Alejandra Abeldaño
- Hospital General de Agudos "Dr. Cosme Argerich", Buenos Aires, Argentina
| | | | | | - Lidia Virginia Alonio
- Department of Virology, National Institute of Infectious Diseases-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires, Argentina
| | - Peter J F Snijders
- Department of Pathology, VU University Medical Center, Amsterdam, The Netherlands
| | - María Alejandra Picconi
- Department of Virology, National Institute of Infectious Diseases-ANLIS "Dr. Carlos G. Malbrán", Buenos Aires, Argentina
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Nieto R, Sánchez-Torres M, Mejía O, Figueroa J, Olivares L, Peralta J, Cordero J, Molina P, Cárdenas M. Effect of fish meal and oil on hormone profile and reproductive variables in ewes inseminated by laparoscopy. Livest Sci 2015. [DOI: 10.1016/j.livsci.2015.06.009] [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: 10/23/2022]
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Masia J, Olivares L, Koshima I, Teo TC, Suominen S, Van Landuyt K, Demirtas Y, Becker C, Pons G, Garusi C, Mitsunaga N. Barcelona consensus on supermicrosurgery. J Reconstr Microsurg 2013; 30:53-8. [PMID: 24037459 DOI: 10.1055/s-0033-1354742] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The popularity of supermicrosurgery has increased dramatically over the past few years, but the lack of agreement regarding the name of the technique and its applications has caused misunderstandings among microsurgeons when trying to communicate and compare surgical procedures. We report the consensus reached on the name used to refer to supermicrosurgery techniques following the First European Conference on Supramicrosurgery held in Barcelona (Spain) on March 4-5, 2010. Present applications, advantages, and disadvantages of supermicrosurgery are discussed. It was agreed that supermicrosurgery was the most accurate name to reflect the essence of this extremely delicate technique. According to Koshima, supermicrosurgery is a technique of microneurovascular anastomosis for vessels of 0.3 to 0.8 mm and single nerve fascicles. The range of applications for this technique has increased rapidly and now includes lymphedema treatment, nerve reconstruction, replantation and reconstruction of amputated fingertips, microsurgical flap salvage, and new possibilities for free tissue transfer. Supermicrosurgery is a remarkably useful reconstructive tool that involves a great deal of skill and has a steep learning curve for the microsurgeon to master. Although it is currently performed by only a minority of microsurgeons, we consider it will be incorporated into conventional microsurgery in the near future.
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Affiliation(s)
- J Masia
- Department of Plastic Surgery, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - L Olivares
- Department of Plastic Surgery, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - I Koshima
- Department of Plastic Surgery, Tokyo University Hospital, Tokyo, Japan
| | - T C Teo
- Department of Plastic Surgery, Queen Victoria Hospital, East Grinstead, United Kingdom
| | - S Suominen
- Department of Plastic Surgery, Helsinki University Central Hospital, Helsinky, Finland
| | - K Van Landuyt
- Department of Plastic Surgery, Gent Universitu Hospital, Gent, Belgium
| | - Y Demirtas
- Department of Plastic Surgery, Ondokuz Mayis University Medical School, Samsun, Turkey
| | - C Becker
- Department of Plastic surgery, Hospital Europeen Georges Pompidou of Paris, Paris, France
| | - G Pons
- Department of Plastic Surgery, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - C Garusi
- Department of Plastic Surgery, European Institute of Oncology Milano, Milano, Italy
| | - N Mitsunaga
- Department of Plastic Surgery, Tokyo University Hospital, Tokyo, Japan
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Affiliation(s)
- M. Mellado
- a Department of Nutrition , University Autonoma Agraria Antonie Narro , Saltillo , Coah , 25315 , Mexico
| | - L. Olivares
- a Department of Nutrition , University Autonoma Agraria Antonie Narro , Saltillo , Coah , 25315 , Mexico
| | - A. Rodriguez
- a Department of Nutrition , University Autonoma Agraria Antonie Narro , Saltillo , Coah , 25315 , Mexico
| | - J. Mellado
- a Department of Nutrition , University Autonoma Agraria Antonie Narro , Saltillo , Coah , 25315 , Mexico
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Cortínez LI, Anderson BJ, Penna A, Olivares L, Muñoz HR, Holford NHG, Struys MMRF, Sepulveda P. Influence of obesity on propofol pharmacokinetics: derivation of a pharmacokinetic model. Br J Anaesth 2010; 105:448-56. [PMID: 20710020 DOI: 10.1093/bja/aeq195] [Citation(s) in RCA: 132] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The objective of this study was to develop a pharmacokinetic (PK) model to characterize the influence of obesity on propofol PK parameters. METHODS Nineteen obese ASA II patients undergoing bariatric surgery were studied. Patients received propofol 2 mg kg(-1) bolus dose followed by a 5-20-40-120 min, 10-8-6-5 mg kg(-1) h(-1) infusion. Arterial blood samples were withdrawn at 1, 3, 5 min after induction, every 10-20 min during propofol infusion, and every 10-30 min for 2 h after stopping the propofol infusion. Arterial samples were processed by high-performance liquid chromatography. Time-concentration data profiles from this study were pooled with data from two other propofol PK studies available at http://www.opentci.org. Population PK modelling was performed using non-linear mixed effects model. RESULTS The study involved 19 obese adults who contributed 163 observations. The pooled analysis involved 51 patients (weight 93 sd 24 kg, range 44-160 kg; age 46 sd 16 yr, range 25-81 yr; BMI 33 sd 9 kg m(-2), range 16-52 kg m(-2)). A three-compartment model was used to investigate propofol PK. An allometric size model using total body weight (TBW) was superior to all other models investigated (linear TBW, free fat mass, lean body weight, normal fat mass) for all clearance parameters. Variability in V2 and Q2 was reduced by a function showing a decrease in both parameters with age. CONCLUSIONS We have derived a population PK model using obese and non-obese data to characterize propofol PK over a wide range of body weights. An allometric model using TBW as the size descriptor of volumes and clearances was superior to other size descriptors to characterize propofol PK in obese patients.
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Affiliation(s)
- L I Cortínez
- Departamento de Anestesiología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Hospital Clínico U. Católica, Marcoleta 367, PO Box 114-D, Santiago, Chile.
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Negroni R, Bianchi MH, Arechavala AI, Maiolo E, Santiso G, Olivares L. [Clinical cases in Medical Mycology. Case No. 28]. Rev Iberoam Micol 2007; 24:325-6. [PMID: 18095771 DOI: 10.1016/s1130-1406(07)70067-0] [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: 10/20/2022] Open
Affiliation(s)
- Ricardo Negroni
- Unidad Micología, Hospital de Infecciosas Francisco Javier Muñiz, Buenos Aires, Argentina.
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Mellado M, Olivares L, Diaz H, Villarreal JA. Placental Traits in Pen-fed Goats and Goats Kept on Rangeland. Journal of Applied Animal Research 2006. [DOI: 10.1080/09712119.2006.9706588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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10
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de la Barrera S, Finiasz M, Fink S, Ilarregui J, Aleman M, Olivares L, Franco MC, Pizzariello G, del Carmen Sasiain M. NK cells modulate the cytotoxic activity generated by Mycobacterium leprae-hsp65 in leprosy patients: role of IL-18 and IL-13. Clin Exp Immunol 2004; 135:105-13. [PMID: 14678270 PMCID: PMC1808925 DOI: 10.1111/j.1365-2249.2004.02334.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 11/27/2022] Open
Abstract
Protection against intracellular pathogens such as Mycobacterium leprae is critically dependent on the function of NK cells at early stages of the immune response and on Th1 cells at later stages. In the present report we evaluated the role of IL-18 and IL-13, two cytokines that can influence NK cell activity, in the generation of M. leprae-derived hsp65-cytotoxic T lymphocytes (CTL) from peripheral blood mononuclear cells (PBMC) of leprosy patients. We demonstrated that IL-18 modulates hsp65-induced CTL generation and collaborates with IL-12 for this effect. In paucibacillary (PB) patients and normal controls (N) depletion of NK cells reduces the cytolytic activity. Under these conditions, IL-12 cannot up-regulate this CTL generation, while, in contrast, IL-18 increases the cytotoxic activity both in the presence or absence of NK cells. IL-13 down-regulates the hsp65-induced CTL generation and counteracts the positive effect of IL-18. The negative effect of IL-13 is observed in the early stages of the response, suggesting that this cytokine affects IFNgamma production by NK cells. mRNA coding for IFNgamma is induced by IL-18 and reduced in the presence of IL-13, when PBMC from N or PB patients are stimulated with hsp65. Neutralization of IL-13 in PBMC from multibacillary (MB) leprosy patients induces the production of IFNgamma protein by lymphocytes. A modulatory role on the generation of hsp65 induced CTL is demonstrated for IL-18 and IL-13 and this effect takes place through the production of IFNgamma.
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Affiliation(s)
- S de la Barrera
- Departamento de Inmunología, Instituto de Investigaciones Hematológicas (IIHema), Academia Nacional de Medicina and Servicio de Dermatología - Hospital F.J.Muñiz, Buenos Aires, Argentina
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11
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Abstract
A theoretical 12-transmembrane segment model based on the hydrophobic moment has been proposed for the transmembrane topology of the glycine transporter GLYT1 and all other members of the sodium- and chloride-dependent transporter family. We tested this model by introducing N-glycosylation sites along the GLYT1 sequence as reporter for an extracellular localization and by an in vitro transcription/translation assay that allows the analysis of the topogenic properties of different segments of the protein. The data reported herein are compatible with the existence of 12 transmembrane segments, but support a rearrangement of the first third of the protein. Contrary to prediction, hydrophobic domain 1 seems not to span the membrane, and the loop connecting hydrophobic domains 2 and 3, formerly believed to be intracellular, appears to be extracellularly located. In agreement with the theoretical model, we provide evidence for the extracellular localization of loops between hydrophobic segments 5 and 6, 7 and 8, 9 and 10, and 11 and 12.
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Affiliation(s)
- L Olivares
- Centro de Biología Molecular Severo Ochoa, Universidad Autónoma de Madrid, Consejo Superior de Investigaciones Científicas, Spain
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12
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Zafra F, Gomeza J, Olivares L, Aragón C, Giménez C. Regional distribution and developmental variation of the glycine transporters GLYT1 and GLYT2 in the rat CNS. Eur J Neurosci 1995; 7:1342-52. [PMID: 7582108 DOI: 10.1111/j.1460-9568.1995.tb01125.x] [Citation(s) in RCA: 204] [Impact Index Per Article: 7.0] [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: 01/26/2023]
Abstract
The high-affinity glycine transporter in neurons and glial cells is the primary means of inactivating synaptic glycine. Previous molecular cloning studies have indicated heterogeneity of glycine transporters in the CNS. Here the distribution of glycine transporter GLYT1 and GLYT2 transcripts and proteins in different regions and developmental stages of the rat brain were analysed by Northern, Western and in situ hybridization techniques. Sequence-specific riboprobes and two specific antibodies raised against fusion proteins were used, containing either 76 or 193 amino acids of the C or N terminus of the GLYT1 and GLYT2 transporters respectively. High levels of GLYT1 transcripts were found in the spinal cord, brainstem and cerebellum, and moderate levels in forebrain regions such as the cortex or hippocampus. GLYT2 transcripts are restricted to the spinal cord, brainstem and cerebellum. The onset of both GLYT1 and GLYT2 expression in the brainstem occurred in late fetal life, and full expression of these proteins was observed before weaning. There was a stepwise increase in the levels of mRNA and protein for these two transporters, reaching a maximum by the second postnatal week, followed by a slight decrease until adult values were reached by the fourth postnatal week. These data reveal interesting parallelism between the distribution of different glycine transporters and glycine receptor subunits, and suggest discrete roles for distinct glycine transporters.
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Affiliation(s)
- F Zafra
- Centro de Biología Molecular Severo Ochoa, Facultad de Ciencias, Universidad Autónoma de Madrid, Spain
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Zafra F, Aragón C, Olivares L, Danbolt NC, Giménez C, Storm-Mathisen J. Glycine transporters are differentially expressed among CNS cells. J Neurosci 1995; 15:3952-69. [PMID: 7751957 PMCID: PMC6578198] [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: 01/26/2023] Open
Abstract
Glycine is the major inhibitory neurotransmitter in the spinal cord and brainstem and is also required for the activation of NMDA receptors. The extracellular concentration of this neuroactive amino acid is regulated by at least two glycine transporters (GLYT1 and GLYT2). To study the localization and properties of these proteins, sequence-specific antibodies against the cloned glycine transporters have been raised. Immunoblots show that the 50-70 kDa band corresponding to GLYT1 is expressed at the highest concentrations in the spinal cord, brainstem, diencephalon, and retina, and, in a lesser degree, to the olfactory bulb and brain hemispheres, whereas it is not detected in peripheral tissues. Pre-embedding light and electron microscopic immunocytochemistry show that GLYT1 is expressed in glial cells around both glycinergic and nonglycinergic neurons except in the retina, where it is expressed by amacrine neurons, but not by glia. The expression of a 90-110 kDa band corresponding to GLYT2 is restricted to the spinal cord, brain-stem, and cerebellum; in addition, very low levels occur in the diencephalon. GLYT2 is found in presynaptic elements of neurons thought to be glycinergic. However, in the cerebellum, GLYT2 is expressed both in terminal boutons and in glial elements. The physiological consequences of the regional and cellular distributions of these two proteins as well as the possibility of the existence of an unidentified neuronal form of GLYT1 are discussed.
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Affiliation(s)
- F Zafra
- Centro de Biología Molecular Severo Ochoa, Facultad de Ciencias, Universidad Autónoma de Madrid, Spain
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Abstract
To elucidate the role of N-glycosylation in the function of the high affinity glycine transporter GLYT1, we have investigated the effect of the glycosylation inhibitor tunicamycin as well as the effect of the disruption of the putative glycosylation sites by site-directed mutagenesis. SDS-polyacrylamide gel electrophoresis of proteins from GLYT1-transfected COS cells reveals a major band of 80-100 kDa and a minor one of 57 kDa. Treatment with tunicamycin produces a 40% inhibition in transport activity and a decrease in the intensity of the 80-100-kDa band, whereas the 57-kDa band decreases in size to yield a 47-kDa protein corresponding to the unglycosylated form of the transporter. Simultaneous mutation of Asn-169, Asn-172, Asn-182, and Asn-188 to Gln also produces the 47-kDa form of the protein, indicating that there are no additional sites for N-glycosylation. Progressive mutation of the potential glycosylation sites produces a progressive decrease in transport activity and in size of the protein, indicating that the four putative glycosylation sites are actually glycosylated. N-Glycosylation of the GLYT1 is not indispensable for the transport activity itself, as demonstrated by enzymatic deglycosylation of the transporter. Analysis of surface proteins by biotinylation and by immunofluorescence demonstrates that a significant portion of the unglycosylated GLYT1 mutant remains in the intracellular compartment. This suggests that the carbohydrate moiety of glycine transporter GLYT1 is necessary for the proper trafficking of the protein to the plasma membrane.
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Affiliation(s)
- L Olivares
- Centro de Biología Molecular Severo Ochoa, Facultad de Ciencias, Universidad Autónoma de Madrid, Spain
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Gomeza J, Zafra F, Olivares L, Giménez C, Aragón C. Regulation by phorbol esters of the glycine transporter (GLYT1) in glioblastoma cells. Biochim Biophys Acta 1995; 1233:41-6. [PMID: 7833348 DOI: 10.1016/0005-2736(94)00249-o] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The high-affinity glycine transporter in neurons and glial cells is the primary means of inactivating synaptic glycine. The effects of 12-O-tetradecanoylphorbol ester (TPA), a potent activator of protein kinase C (PKC), on the high-affinity Na(+)-dependent glycine transport were investigated in C6 cells, a cell line of glial origin. Incubation of C6 cells with TPA led to concentration- and time-dependent decrease in the glycine transport that could be completely suppressed by the addition of the PKC inhibitor staurosporine. The TPA effect could be mimicked by oleoylacetylglycerol and exogenous phospholipase C. Northern and Western blot analysis indicate that C6 cells express the GLYT1 glycine transporter. Incubation of COS cells transiently transfected with a full-length clone of the GLYT1 transporter in the presence of TPA, produces a decrease in glycine uptake.
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Affiliation(s)
- J Gomeza
- Centro de Biología Molecular Severo Ochoa, Facultad de Ciencias, Universidad Autónoma de Madrid, C.S.I.C., Spain
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Olivares L, Aragón C, Giménez C, Zafra F. Carboxyl terminus of the glycine transporter GLYT1 is necessary for correct processing of the protein. J Biol Chem 1994; 269:28400-4. [PMID: 7961780] [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: 01/28/2023] Open
Abstract
The high affinity glycine transporter in neurons and glial cells is the primary means of inactivating synaptic glycine. To understand the structure-function relationships, especially the role of the intracellular carboxyl- and amino-terminal domains, we have modified the glycine transporter GLYT1 by using a polymerase chain reaction-based mutagenesis approach. Deletion of the first 30 amino acids of the amino terminus does not alter transport of glycine. Truncation of the last 34 amino acids of the carboxyl terminus did not impair glycine transport, but progressively more extensive deletions produced a progressive decrease in transport activity. All the fully active or partially active forms of the transporter retain the characteristic sodium and chloride dependence of the wild type. When the nonfunctional mutants of the carboxyl terminus were examined by an immunofluorescence technique, the carrier was no longer found in the membrane. This suggests that the carboxyl terminus of GLYT1 may be involved in the membrane insertion process. Moreover, the transporter that is not fully processed is not functional, because transport activity cannot be rescued in a solubilization-reconstitution experiment.
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Affiliation(s)
- L Olivares
- Centro de Biología Molecular Severo Ochoa, Facultad de Ciencias, Universidad Autónoma de Madrid, Consejo Superior de Investigaciones Científicas, Spain
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17
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Olivares L, Aragón C, Giménez C, Zafra F. Carboxyl terminus of the glycine transporter GLYT1 is necessary for correct processing of the protein. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(18)46941-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Alcántara R, Casado M, Olivares L, Giménez C, Aragón C. L-glutamate transporter derived from mRNAs of primary glial cultures: expression in Xenopus laevis oocytes. Brain Res Mol Brain Res 1992; 15:167-70. [PMID: 1331663 DOI: 10.1016/0169-328x(92)90166-9] [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] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A high-affinity sodium-dependent L-glutamate transporter was expressed in Xenopus oocytes after microinjection of poly(A)+ RNA from primary astrocyte cultures from rat brain cortex. mRNA-induced L-glutamate transport was saturable by substrate and shows kinetic features similar to those found in intact glial cell preparations. L-Glutamate accumulation was prevented by rising the external K+ concentration or by coincubation with L-, D-aspartate or D-glutamate. After fractionation by sucrose density gradient, the mRNA encoding for the expressed L-glutamate transporter from glial cells was found in fractions containing messages of 2.05-2.9 kilobases (kb) in length.
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Affiliation(s)
- R Alcántara
- Centro de Biología Molecular, Facultad de Ciencias, Universidad Autónoma de Madrid, Spain
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Caceres E, Valdivia S, Cotrina M, Lingan M, Leon L, Gamboa M, Olivares L, Moran M. Two years of cyclophosphamide and 5-fluorouracil as adjuvant chemotherapy for stage II and III breast carcinoma. J Surg Oncol 1988; 39:169-74. [PMID: 3054335 DOI: 10.1002/jso.2930390307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 01/03/2023]
Abstract
The results after 6 years of a prospective clinical trial of adjuvant chemotherapy with a regimen of two drugs--cyclophosphamide and 5-fluorouracil (CF)-- for 2 years in 97 women with stage II or III breast cancer are reported. Eligible patients were free from distant metastases. All patients began adjuvant therapy within 4 weeks of surgery; therapy consisted of radical, modified, or extended radical mastectomy. No postoperative radiotherapy was given. The results are compared with a historical control group from previous consecutive patients treated by surgery alone. Patients were stratified by age (younger than 50 or older than or equal to 50) and nodal status (one to three positive axillary nodes vs. four or more positive nodes). The estimated 6-year survival was 60% for CF patients vs. 31% for control patients (P = 0.001). The estimated 6-year disease-free survival was 53.6 and 30.3% for CF and control, respectively (P = 0.007). There was a trend toward longer disease-free survival (DFS) and survival (S) in patients treated with CF, but this was not significant in all the subgroups. Disease-free survival was statistically significant in the subgroup of women greater than or equal to 50 years old with one to three positive nodes (P = 0.038); survival in the patients less than or equal to 49 years old with four or more positive nodes (P = 0.0036); and in patients greater than or equal to 50 years old with one to three lymph nodes involvement (P = 0.038).
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Affiliation(s)
- E Caceres
- Instituto Nacional de Enfermedades Neoplasicas, Department of Breast, Bone and Mixed Tumors, Lima, Peru
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Boerr LA, Bai JC, Olivares L, Moran CE, Kowalczuk A. Cutaneous metastatic Crohn's disease: treatment with metronidazole. Am J Gastroenterol 1987; 82:1326-7. [PMID: 3687911] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A 55-yr-old man with ileocolic Crohn's disease developed granulomatous dermatitis in the malar region. He was treated with metronidazole 1.5 g/day for 1 month, with remission of the skin lesion after 10 days.
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Affiliation(s)
- L A Boerr
- Hospital Nacional de Gastroenterologia Dr. Carlos Bonorino Udaondo, Buenos Aires, Argentina
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Olivares L. [Reflections on medical decision making]. GAC MED MEX 1987; 123:147-55. [PMID: 3315817] [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: 01/05/2023] Open
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Uribe-Elías R, Negrete-Martínez J, Boom R, Olivares L, Kumate J. [Acting and deciding in medicine]. GAC MED MEX 1987; 123:89-103. [PMID: 3678726] [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: 01/06/2023] Open
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23
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Ernst S, Oberg C, Olivares L. [Canine echinococcosis in a rural area of Valdivia, Chile (author's transl)]. Bol Chil Parasitol 1980; 35:76-78. [PMID: 7317141] [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: 05/21/2023]
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24
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Márquez L, Olivares L. [Epilepsy in Mexico. Epidemiologic study of a rural community]. Salud Publica Mex 1979; 21:487-95. [PMID: 550324] [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: 12/23/2022] Open
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25
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García Leal B, Olivares L. [Sodium phenytoin as the sole medication in generalized convulsive crises in children]. Prensa Med Mex 1979; 44:222-5. [PMID: 262311] [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: 12/14/2022]
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26
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Gutiérrez J, Larios O, Valdés E, Barajas E, Jiménez JM, Olivares L. [Thyrotoxic periodic paralysis. Report of two cases (author's transl)]. Rev Invest Clin 1979; 31:263-9. [PMID: 523861] [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: 12/15/2022]
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27
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Alarcón T, Olivares L. [Cerebral cysticercosis. Clinical manifestations in a region of high prevalence]. Rev Ecuat Hig Med Trop 1977; 30:7-15. [PMID: 607330] [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: 12/23/2022]
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28
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Olivares L. [Neurological epidemiology in Mexico. Study of an urban population sample]. Salud Publica Mex 1976; 18:665-72. [PMID: 1019764] [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: 12/25/2022] Open
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29
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Alarcón T, Olivares L. [Cerebral cysticercosis. Clinical manifestations in a high prevalence milieu (author's transl)]. Rev Invest Clin 1975; 27:209-15. [PMID: 1188206] [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: 12/26/2022]
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30
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Olivares L, Zepeda C. [Morbidity and mortality of cerebrovascular diseases in Mexico]. Salud Publica Mex 1975; 17:197-205. [PMID: 1198250] [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: 12/26/2022] Open
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31
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Olivares L, Gutiérrez J, Boissin G. [Neurological characterization of ataxia telangectasia. Review of the literature and analysis of 8 new cases]. Rev Clin Esp 1974; 135:359-66. [PMID: 4457989] [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: 01/10/2023]
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32
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Abstract
A study of 720 autopsy cases from the Instituto Nacional de Neurologia, SSA (INN) and the Centro Hospitalario 20 de Noviembre ISSTE (CH 20 N) was made in order to investigate the frequency of aspiration in postmortem material of neurological cases. Aspiration occurred in 12.5% and 6.5%, respectively, of the cases under study. The clinical features of both groups were quite similar, and slight differences could not account for the uneven proportion of aspiration. When correlating the presence or absence of aspiration in both groups with and without the use of a gastric tube, a significant correlation was found between the use of a tube and the postmortem finding of aspiration. Gastric tube (tube feeding) increases the risk of aspiration six times. Our results support the view that opposes the early, indiscriminate and incautious use of tube feeding in the comatose patient.
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Franco R, Olivares L. [Haloperidol in Sydenham's chorea. Double blind study in 22 patients]. Bol Med Hosp Infant Mex 1974; 31:267-78. [PMID: 4611452] [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: 01/11/2023] Open
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Abstract
Mexicans hospitalized between July, 1967, and June, 1968, with clinically diagnosed stroke provided information on risk factors in a population from which little systematically collected information on stroke exists. The patients were beneficiaries of ISSSTE, a government-sponsored health care system. Postmortem examination in 20 patients indicated virtually 100% validity of diagnosis. Cerebral thrombosis, hemorrhage and embolus occurred in a ratio of 6:2:1. There was no sex difference in stroke frequency. Thrombosis and hemorrhage increased with age; embolus occurred more often in younger patients. Thrombosis tended to occur when at repose and in individuals with sedentary occupations; the opposite was found with hemorrhage and embolus. Obesity did not seem to predispose to stroke. Hypertension, heart disease and diabetes mellitus emerged as common antecedent conditions. There was a morning peak in onset of thrombosis and hemorrhage and an afternoon peak for embolus. No relation of onset to holidays or stress was noted. Thrombosis, hemorrhage and embolus all were associated with increased ambient temperature, and with low, slightly decreased and high humidity, respectively. An August-September (end of rainy season) peak in seasonal frequency occurred. The risk factors previously identified as being important mainly in northern populations seemed to be important in this Mexican population as well. Thus, ethnic and cultural variability exerted little effect on stroke frequency.
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Segovia A, Olivares L, Revuelta R. [Nasogastric intubation, gastroclysis and bronchoaspiration in neurologic patients. Review of 720 autopsy cases]. GAC MED MEX 1973; 106:61-5. [PMID: 4745739] [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: 01/12/2023] Open
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36
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Olivares L. [Validation of the epidemiological laboratories of the Institute del Seguro Social de la Salud de los Trabajadores del Estado for the study of chronic diseases]. Salud Publica Mex 1973; 15:15-20. [PMID: 4791559] [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: 01/12/2023] Open
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37
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Olivares L, Otero E, De la Peña F. [Doxepin in tension headache]. Rev Invest Clin 1971; 23:173-6. [PMID: 5133214] [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: 01/14/2023]
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39
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Olivares L, Alter M, Márquez L, Cisneros L, Sánchez C. [Epidemiology of primary cerebral tumors in Mexico. Study of the population of the Instituto de la Salud del Seguro Social de los Trabajadores del Estado in the Distrito Federal]. Salud Publica Mex 1971; 13:305-12. [PMID: 5164660] [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: 01/14/2023] Open
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Olivares L, De la Peña F. [Tests of BC 105 in 20 cases of vascular headache]. Alergia 1969; 17:67-73. [PMID: 4392873] [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: 01/10/2023]
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42
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Carpio MG, Zanzi I, Cobos L, Olivares L. [Some clinical aspects of Sjögren's syndrome]. Rev Med Chil 1968; 96:79-86. [PMID: 5720743] [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: 01/16/2023]
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43
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Negrete-Martínez J, Olivares L, Solís-Cámara P. [Use of subjective probabilites by computers in a simulated clinical diagnosis]. GAC MED MEX 1967; 97:1256-70. [PMID: 5612257] [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: 01/15/2023] Open
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44
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Negrete-Martínez J, Olivares L, Solís-Cámara P. [The use of subjective statistics in the simulation of clinical diagnosis by means of computers]. Bol Inst Estud Med Biol Univ Nac Auton Mex 1966; 24:87-108. [PMID: 5299397] [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: 01/14/2023]
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