1
|
Cortes C, Aramayo G EN, Barboza PE, Claros EM, Embon MA. Prognostic value of left ventricular ventricular dyssynchrony in left bundle branch block patients. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeab111.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Patients with left bundle branch block (LBBB) patterns on the electrocardiogram include a heterogeneous group of patients with different prognosis and some of them with or without left ventricular mechanical dyssynchrony (LVMD). LVMD obtained by gated technetium 99m single photon emission computed tomography (SPECT) imaging could be an early tool to detect myocardial damage, identifying a high risk group.
Purpose
The aim of this study was to assess the prognostic value of LVMD in LBBB patients.
Methods
Five hundred and eighty consecutive patients with LBBB were referred for gated SPECT from August 2011 to June 2019. Phase analysis parameters Standard deviation (SD) and histogram bandwidth (HB) were obtained in rest gated SPECT imaging. LVMD was defined as the upper limit of the highest normal for phase analysis results in our control patients mean values plus two standard deviations (SD ≥ 21° or HB ≥ 67°). Follow up was performed by telephone contact or medical history review. Hard endpoint was all-cause death. Event-free survival curves were obtained. Univariate and multivariate regression analysis were performed.
Results
LVMD was observed in 254 (44%) patients. Compared to non LVMD patients had: similar age (67.68 ± 11.01 vs. 67.2 ± 10.3 y; p NS), more male (75.2% vs 39.6%), more hypertension (75.2% vs. 66.8%), more diabetes (22.8% vs. 13%) and more smoking history (31.9% vs. 23.7%) all p <0.05. A total of 495 patients completed the follow up (mean 29.8 ± 25.8 months). Fourteen patients died (2.8%), 12 had LVMD. Fig 1 shows Kaplan-Meier curve of event-free survival in relation to LVMD. Variables associated with all-cause death in the univariate analysis were: Score Rest Summed ≥ 4 (p 0.02), LV ejection fraction ≤ 35% (p < 0.01), diabetes (p 0.03) and LVMD (p <0.01). The absence of LVMD was a predictor of the lower risk of all-cause death in the multivariate analysis (adjusted hazard ratio: 0.13, 95% confidence interval: 0.03- 0.56; p < 0.01).
Conclusion
In our population of patients with LBBB, the absence of LVMD assessed by gated SPECT imaging identifies patients with lower risk of hard adverse events.
Collapse
Affiliation(s)
- C Cortes
- Hospital Universitario Fundación Favaloro, buenos aires, Argentina
| | - EN Aramayo G
- Hospital Universitario Fundación Favaloro, buenos aires, Argentina
| | - PE Barboza
- Hospital Universitario Fundación Favaloro, buenos aires, Argentina
| | - EM Claros
- Hospital Universitario Fundación Favaloro, buenos aires, Argentina
| | - MA Embon
- Hospital Universitario Fundación Favaloro, buenos aires, Argentina
| |
Collapse
|
2
|
Cortes C, Eguibar JR, Ibarra-Hernandez JM. 0427 Bicuculine Increased the Cataplexy in the Male Taiep Rats: An Animal Model of Narcolepsy with an Inherent Tubulopathy. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Narcolepsy is a hypersomnolence that is characterized by sleep fragmentation, sleep paralysis, hypnagogic hallucinations and cataplexy that is characterized by atonia induced by strong emotions. The amygdala is the trigger for cataplexy through GABAergic mechanisms. Taiep is a myelin mutant with TUBB4A tubulopathy which showed spontaneous episodes of atonia or induced by manipulations from the tail or the thorax. EEG recordings during immobility episodes (IE′s) had a cerebral cortex desynchronized associated to theta rhythm in the hippocampus. The aim of this sturdy was to analyze the effects of bicuculine administration on IE′s and sleep-wake pattern on adult male taiep rats.
Methods
We used 6 taiep male rats at 9 months of age. The subjects (Ss) lived in individual acrylic cages with water and food pellets available ad libitum, under a 12:12 light-dark cycle (lights on at 0700), with controlled temperature and humidity recording room. All Ss were implanted to record EEG, EMG and EOG to characterize EI′s. We evaluated a basal 24 h EEG recording and then after bicuculine i.p. administration of 0.5, 1 y 1.5 mg/Kg every 48h. We measured the number, mean duration and latency to the first IE′s.
Results
The duration of IE′s increased 527% with 1 mg/Kg and reach 700% with 1.5 mg/Kg of bicuculine (P<0.01) with respect to saline-treated control group. Importantly, the frequency of IEs did not differ among the groups and did not affect the number of awake, slow wave or rapid eye movements sleep phases.
Conclusion
Bicuculine, a specific GABA antagonist, modify the duration of IES but not their frequency supporting a role of GABAergic mechanism on IE′s. It is relevant because sodium oxybate, an indirect GABA agonist, reduced cataplexy and improved sleep quality on narcoleptic patients.
Support
CONACYT grants 243333 and 243247 to CC and JRE, respectively and from VIEP-BUAP 2019 to CA in Neuroendocrinología BUAP-CA-288.
Collapse
Affiliation(s)
- C Cortes
- Benemerita Universidad Autonoma de Puebla, Puebla, MEXICO
| | - J R Eguibar
- Benemerita Universidad Autonoma de Puebla, Puebla, MEXICO
| | | |
Collapse
|
3
|
Eguibar JR, Cortes C, Espinoza K, De Ovando CI. 0428 Taiep Rats Had Normal Levels of Orexin Neurons in the Lateral Hypothalamus But Their Cataplexy Attacks are Sensible to Specific Orexin B Agonist. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Narcolepsy is characterized by sleep fragmentation, sleep paralysis, hypnagogic hallucinations and cataplexy. The cataplexy is a sudden loss of muscle tone triggered by emotions in humans, as well as in animal models. It is stablished that most of the patients had a significant decrease of orexin neurons in the lateral hypothalamus. Taiep rats had a mutation in tubulin TUBB4A and suffer immobility episodes (IE′s) that had a desynchronized activity in the cortex associated with theta rhythm in the hippocampus similar to narcolepsy patients. The aim of this study was to analyze the effects of central administration of an orexin B agonist and determination by immunohistochemistry of the number of orexin neurons on adult male taiep rats.
Methods
We used 14 male taiep rats of 9 months of age. The subjects (Ss) lived 3-4 in acrylic cages with water and food pellets ad libitum, under a 12:12 light-dark cycle (lights on at 0700), whit-controlled temperature and humidity in the recording room. All Ss were implanted to record EEG, EMG and EOG to characterize immobility episodes (IE′s) in a control 8 h recording and after i.c.v. administration of [Ala 11, D-Leu 15]-orexin B with 1, 3 and 10 nmol/1 μL. We measured the number, mean duration and latency to the first IE′s.
Results
The administration of [Ala 11, D-Leu 15]-orexin B significantly reduced the number of IE′s (P<0.01), from 4.28 ± 1.5 IE′s to just 0.25 ± 0.17 with 10 nmol/1 μL dose, but did not change the amount of awakening, slow wave or rapid eye movement sleep. Importantly, the number or orexins neurons were similar between taiep and Sprague-Dawley rats.
Conclusion
The myelin mutant taiep rats is a model of narcolepsy with cataplexy with normal number of orexin neurons in the lateral hypothalamus. Additionally, a specific orexin B agonist reduced IE′s without any effect the sleep pattern. This could be useful for the design of new treatments.
Support
CONACYT grants 243333 and 243247 to CC and JRE, respectively. Grants from VIEP-BUAP 2019 and CA in Neuroendocrinología BUAP-CA-288.
Collapse
Affiliation(s)
- J R Eguibar
- Benemerita Universidad Autonoma de Puebla, Puebla, MEXICO
| | - C Cortes
- Benemerita Universidad Autonoma de Puebla, Puebla, MEXICO
| | - K Espinoza
- Benemerita Universidad Autonoma de Puebla, Puebla, MEXICO
| | - C I De Ovando
- Benemerita Universidad Autonoma de Puebla, Puebla, MEXICO
| |
Collapse
|
4
|
Anandh U, Gopal B, Conjeevaram A, Cortes C, Gleeson S, Madariaga H, Malina M, Arce-Amare F, Lerma E, Turgut D, Bek S, Nair S, Paunic Z, Desai T, Pastor A. SAT-484 Trends in Twitter Coverage of Nephrology Conferences through Novel Indices of Impact. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.516] [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: 10/24/2022] Open
|
5
|
Crabtree-Ramírez B, Jenkins C, Jayathilake K, Carriquiry G, Veloso V, Padgett D, Gotuzzo E, Cortes C, Mejia F, McGowan CC, Duda S, Shepherd BE, Sterling TR. HIV-related tuberculosis: mortality risk in persons without vs. with culture-confirmed disease. Int J Tuberc Lung Dis 2020; 23:306-314. [PMID: 30871661 DOI: 10.5588/ijtld.18.0111] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Tuberculosis (TB) diagnosis in human immunodeficiency virus (HIV) positive persons is difficult, particularly in resource-limited settings. The relationship between TB culture status and mortality in HIV-positive persons treated for TB is unclear. METHODS We evaluated HIV-positive adults treated for TB at or after their first HIV clinic visit in Argentina, Brazil, Chile, Honduras, Mexico or Peru from 2000 to 2015. Anti-tuberculosis treatment included 2 months of isoniazid, rifampicin (RMP)/rifabutin (RBT), pyrazinamide ± ethambutol, followed by continuation phase treatment with isoniazid + RMP/RBT. RESULTS Of 759 TB-HIV patients, 238 (31%) were culture-negative, 228 (30%) had unknown culture status or did not undergo culture and 293 (39%) were culture-positive. The median CD4 at TB diagnosis was 96 (interquartile range 40-228); 636 (84%) received concurrent antiretroviral therapy (ART) and anti-tuberculosis treatment. There were 123 (16%) deaths: 90/466 (19%) with TB culture-negative, unknown or not performed vs. 33/293 (11%) who were TB culture-positive (P = 0.005). In Kaplan-Meier analysis, mortality in TB patients without culture-confirmed disease was higher (P = 0.002). In a Cox model adjusted for age, sex, CD4, ART timing, disease site and stratified by study site, mortality in persons without culture-confirmed TB was not significantly increased compared to those with culture-positive TB (hazard ratio 1.39, 95%CI 0.89-2.16, P = 0.15). CONCLUSION Most HIV-positive patients treated for TB did not have culture-confirmed TB, and mortality tended to be higher in patients without culture-confirmed disease, although the association was not statistically different after adjusting for other variables. Accurate TB diagnosis in HIV-positive persons is crucial.
Collapse
Affiliation(s)
- B Crabtree-Ramírez
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - C Jenkins
- Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - K Jayathilake
- Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - G Carriquiry
- Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - V Veloso
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - D Padgett
- Hospital Escuela Universitario and Instituto Hondureño de Seguridad Social, Tegucigalpa, Honduras
| | - E Gotuzzo
- Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - C Cortes
- Fundación Arriarán, University of Chile School of Medicine, Santiago, Chile
| | - F Mejia
- Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - C C McGowan
- Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - S Duda
- Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - B E Shepherd
- Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - T R Sterling
- Vanderbilt University Medical Center, Nashville, Tennessee, USA
| |
Collapse
|
6
|
Amat Santos IJ, Catala P, Aparisi A, Cortes C, Goncalves Ramirez LR, Gutierrez Garcia H, Ramos B, Serrador A, Vera S, Revilla Orodea A, Gomez I, Carrasco Moraleja M, San Roman Calvar JA. 4282Validation of the “multivalvular score” for the assessment of patients with concomitant mitral and aortic valve disease under evaluation for transcatheter aortic valve implantation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.4282] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- I J Amat Santos
- University Hospital of Vallodolid, ICICOR, Valladolid, Spain
| | - P Catala
- University Hospital of Vallodolid, ICICOR, Valladolid, Spain
| | - A Aparisi
- University Hospital of Vallodolid, ICICOR, Valladolid, Spain
| | - C Cortes
- University Hospital of Vallodolid, ICICOR, Valladolid, Spain
| | | | | | - B Ramos
- University Hospital of Vallodolid, ICICOR, Valladolid, Spain
| | - A Serrador
- University Hospital of Vallodolid, ICICOR, Valladolid, Spain
| | - S Vera
- University Hospital of Vallodolid, ICICOR, Valladolid, Spain
| | | | - I Gomez
- University Hospital of Vallodolid, ICICOR, Valladolid, Spain
| | | | | |
Collapse
|
7
|
Fuentealba P, Cortes C, Manzur J, Paredes-García V, Venegas-Yazigi D, Silva IDA, de Santana RC, Magon CJ, Spodine E. Magnetic behaviour of bimetallic layered phases M' 0.2Mn 0.8PS 3·0.25 H 2O (M' = Zn II, Cu II, Ni II, Co II). Dalton Trans 2017; 46:14373-14381. [PMID: 29027554 DOI: 10.1039/c7dt03249h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work the magnetic properties of bimetallic phases M'0.2Mn0.8PS3·0.25H2O (M' = CoII, NiII, CuII or ZnII) have been explored and compared with those of the pristine phase MnPS3. Magnetic susceptibility, high field magnetization and electron paramagnetic resonance (EPR) studies reveal that the transition temperature between the antiferromagnetic and paramagnetic order for the pristine phase is shifted to lower values in the bimetallic phases. From magnetization measurements the critical field of the spin-flop transition is found to be dependent on the nature of the added secondary transition metal ion. EPR spectra of all compounds in the temperature range of 8-300 K present a single resonance line shape. Temperature dependence of the EPR parameters, like line width, g values and double integrated area (IDIN), are obtained from the spectra and present a scenario compatible with the magnetization results. The temperature dependence of the first derivative of the product (IDINT) shows two maxima for all samples, with exception of the CoII phase, indicating two critical temperatures, while these critical temperatures could not be clearly determined by dc susceptibility.
Collapse
Affiliation(s)
- P Fuentealba
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chille, Santiago, Chile.
| | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Crabtree Ramírez B, Caro Vega Y, Shepherd BE, Le C, Turner M, Frola C, Grinsztejn B, Cortes C, Padgett D, Sterling TR, McGowan CC, Person A. Outcomes of HIV-positive patients with cryptococcal meningitis in the Americas. Int J Infect Dis 2017; 63:57-63. [PMID: 28807740 DOI: 10.1016/j.ijid.2017.08.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 06/20/2017] [Revised: 08/02/2017] [Accepted: 08/06/2017] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Cryptococcal meningitis (CM) is associated with substantial mortality in HIV-infected patients. Optimal timing of antiretroviral therapy (ART) in persons with CM represents a clinical challenge, and the burden of CM in Latin America has not been well described. Studies suggest that early ART initiation is associated with higher mortality, but data from the Americas are scarce. METHODS HIV-infected adults in care between 1985-2014 at participating sites in the Latin America (the Caribbean, Central and South America network (CCASAnet)) and the Vanderbilt Comprehensive Care Clinic (VCCC) and who had CM were included. Survival probabilities were estimated. Risk of death when initiating ART within the first 2 weeks after CM diagnosis versus initiating between 2-8 weeks was assessed using dynamic marginal structural models adjusting for site, age, sex, year of CM, CD4 count, and route of HIV transmission. FINDINGS 340 patients were included (Argentina 58, Brazil 138, Chile 28, Honduras 27, Mexico 34, VCCC 55) and 142 (42%) died during the observation period. Among 151 patients with CM prior to ART 56 (37%) patients died compared to 86 (45%) of 189 with CM after ART initiation (p=0.14). Patients diagnosed with CM after ART had a higher risk of death (p=0.03, log-rank test). The probability of survival was not statistically different between patients who started ART within 2 weeks of CM (7/24, 29%) vs. those initiating between 2-8 weeks (14/53, 26%) (p=0.96), potentially due to lack of power. INTERPRETATION In this large Latin-American cohort, patients with CM had very high mortality rates, especially those diagnosed after ART initiation. This study reflects the overwhelming burden of CM in HIV-infected patients in Latin America.
Collapse
Affiliation(s)
- B Crabtree Ramírez
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Mexico City, Mexico.
| | - Y Caro Vega
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Mexico City, Mexico
| | - B E Shepherd
- Vanderbilt University School of Medicine, Nashville, TN, United States
| | - C Le
- Vanderbilt University School of Medicine, Nashville, TN, United States
| | - M Turner
- Vanderbilt University School of Medicine, Nashville, TN, United States
| | - C Frola
- Fundación Huésped, Buenos Aires, Argentina
| | - B Grinsztejn
- Instituto de Pesquisa Clinica Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - C Cortes
- Universidad de Chile, Fundación Arriarán, Santiago, Chile
| | - D Padgett
- Instituto Hondureño de Seguridad Social and Hospital Escuela, Tegucigalpa, Honduras
| | - T R Sterling
- Vanderbilt University School of Medicine, Nashville, TN, United States
| | - C C McGowan
- Vanderbilt University School of Medicine, Nashville, TN, United States
| | - A Person
- Vanderbilt University School of Medicine, Nashville, TN, United States
| |
Collapse
|
9
|
Amat Santos I, Castrodeza J, Nombela-Franco L, Munoz-Garcia A, Gutierrez-Ibanes E, De La Torre J, Cordoba-Soriano J, Rojas P, Martin-Morquecho I, Cortes C, Vera S, Goncalves R, Carrasco-Moraleja M, Gomez I, San Roman J. P459Tricuspid but not mitral regurgitation determines mortality after TAVR in patients with less than significant mitral regurgitation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p459] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
10
|
|
11
|
Athanasiou Y, Zavros M, Arsali M, Papazachariou L, Demosthenous P, Savva I, Voskarides K, Deltas C, Pierides A, Feriozzi S, Perrin A, West M, Nicholls K, Sunder-Plassmann G, Torras J, Neumann P, Cybulla M, Cofiell R, Kukreja A, Bedard K, Yan Y, Mickle A, Ogawa M, Bedrosian C, Faas S, Meszaros K, Pruess L, Gondan M, Ritz E, Schaefer F, Testa A, Spoto B, Leonardis D, Sanguedolce MC, Pisano A, Parlongo MR, Tripepi G, Mallamaci F, Zoccali C, Trujillano D, Bullich G, Ballarin J, Torra R, Estivill X, Ars E, Kleber ME, Delgado G, Grammer TB, Silbernagel G, Kraemer BK, Maerz W, Riccio E, Pisani A, Abdalla AA, Malone AF, Winn MP, Goodship T, Cronin C, Conlon PJ, Casserly LF, Nishio S, Sakuhara Y, Matsuoka N, Yamamoto J, Nakazawa D, Nakagakaki T, Abo D, Shibazaki S, Atsumi T, Mazzinghi B, Giglio S, Provenzano A, Becherucci F, Sansavini G, Ravaglia F, Roperto RM, Murer L, Lasagni L, Materassi M, Romagnani P, Schmidts M, Christou S, Cortes C, McInerney-Leo A, Kayserili H, Zankl A, Peter S, Duncan E, Wicking C, Beales PL, Mitchison H, Magestro M, Vekeman F, Nichols T, Karner P, Duh MS, Srivastava B, Van Doorn-Khosrovani SBVW, Zonnenberg BA, Musetti C, Quaglia M, Ghiggeri GM, Fogazzi GB, Settanni F, Boldorini RL, Lazzarich E, Airoldi A, Izzo C, Giordano M, Stratta P, Garrido P, Fernandes JC, Ribeiro S, Belo L, Costa EC, Reis F, Santos-Silva A, Youssef DM, Alshal AS, Salah K, Rashed AE, Kingswood JC, Jozwiak S, Belousova E, Frost M, Kuperman R, Bebin EM, Korf B, Flamini JR, Kohrman MH, Sparagana S, Wu JY, Berkowitz N, Miao S, Segal S, Ridolfi A, Bissler JJ, Franz DN, Oud MM, Van Bon BW, Bongers EM, Hoischen A, Marcelis CL, De Leeuw N, Mol SJ, Mortier G, Knoers NV, Brunner HG, Roepman R, Arts HH, Van Eerde AM, Van Der Zwaag B, Lilien MR, Renkema KY, De Borst MH, Van Haaften G, Giles RH, Navis GJ, Knoers NVAM, Lu KC, Su SL, Gigante M, Santangelo L, Diella S, Argentiero L, Cianciotta F, Martino M, Ranieri E, Grandaliano G, Giordano M, Gesualdo L, Fernandes J, Ribeiro S, Garrido P, Sereno J, Costa E, Reis F, Santos-Silva A, Chub O, Aires I, Polidori D, Santos AR, Brito Costa A, Simoes C, Rueff J, Nolasco F, Calado J, Van Der Tol L, Biegstraaten M, Florquin S, Vogt L, Van Den Bergh Weerman MA, Hollak CE, Hughes DA, Lachmann RH, Oliveira JP, Ortiz A, Svarstad E, Terryn W, Tondel C, Waldek S, Wanner C, West ML, Linthorst GE, Kaesler N, Brandenburg V, Theuwissen E, Vermeer C, Floege J, Schlieper G, Kruger T, Xydakis D, Goulielmos G, Antonaki E, Stylianoy K, Sfakianaki M, Papadogiannakis A, Dafnis E, Mdimegh S, Ben Hadj Mbarek - Fredj I, Moussa A, Omezzine A, Zellama D, Mabrouk S, Zouari N, Hassayoun S, Chemli J, Achour A, Bouslama A, Abroug S, Spoto B, Leonardis D, Politi C, Pisano A, Cutrupi S, Testa A, Parlongo RM, D'Arrigo G, Tripepi G, Mallamaci F, Zoccali C, Mdimegh S, Ben Hadj Mbarek - Fredj I, Moussa A, Omezzine A, Mabrouk S, Zouari N, Hassayoun S, Chemli J, Zellama D, Achour A, Bouslama A, Abroug S, Hohenstein-Scheibenecker K, Schmidt A, Stylianou KG, Kyriazis J, Androvitsanea A, Tzanakakis M, Maragkaki E, Petrakis J, Stratakis S, Poulidaki R, Vardaki E, Petra C, Statigis S, Perakis K, Daphnis E, Cybulla M, West M, Nicholls K, Torras J, Neumann P, Sunder-Plassmann G, Feriozzi S, Metzinger-Le Meuth V, Taibi F, M'Baya-Moutoula E, Louvet L, Massy Z, Metzinger L, Mani LY, Sidler D, Vogt B, Nikolskaya N, Cox JA, Kingswood JC, Smirnov A, Zarayski M, Kayukov I, Karunnaya H, Sipovski V, Kukoleva L, Dobronravov V. GENETIC DISEASES AND MOLECULAR GENETICS. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu162] [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: 11/14/2022] Open
|
12
|
Acosta C, Cortes C, MacPhee H, Namaka M. Exploring the Role of Nerve Growth Factor in Multiple Sclerosis: Implications in Myelin Repair. CNSNDDT 2014; 12:1242-56. [DOI: 10.2174/18715273113129990087] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 03/28/2013] [Accepted: 04/11/2013] [Indexed: 11/22/2022]
|
13
|
Cortes C, Beltran C, Wolff M. Comparison of efavirenz and nevirapine based HAART regimens in 4187 patients with up to 6 years of follow up, a prospective, open label observational study. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.2026] [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] Open
|
14
|
Garcia D, Flores-A H, Alaez C, Fromow J, Quiroz H, Martinez M, Solis A, Cortes C, Morales V, Gorodezky C. 131-P: Specific IL4 and IL2 polymorphisms are associated with proliferative rethinopaty in Mexican patients with T2D. Hum Immunol 2009. [DOI: 10.1016/j.humimm.2009.09.164] [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: 11/25/2022]
|
15
|
Masys DR, Fang F, Ye I, Fink V, Gotuzzo E, Padgett D, Pape JW, Cortes C, Bacon M, Schechter M. Preliminary findings on cancer incidence in HIV-infected persons from six countries in Central and South America and the Caribbean. Infect Agent Cancer 2009. [PMCID: PMC4261722 DOI: 10.1186/1750-9378-4-s2-o18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
|
16
|
Cortes C, Wolff M, Beltran C. The Expanded Access Program to HAART in Chile: Baseline Characteristics and Primary Outcomes of Patients Receiving Treatment, Evaluated Through the Chilean AIDS Cohort (ChiAC). Int J Infect Dis 2008. [DOI: 10.1016/j.ijid.2008.05.028] [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: 10/21/2022] Open
|
17
|
James L, Gorwitz RJ, Jones RC, Watson JT, Hageman JC, Jernigan DB, Lord Y, Caballes N, Cortes C, Golash RG, Price JS, Gerber SI. Methicillin-resistant Staphylococcus aureus infections among healthy full-term newborns. Arch Dis Child Fetal Neonatal Ed 2008; 93:F40-4. [PMID: 17412749 DOI: 10.1136/adc.2006.104026] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [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] [Indexed: 11/03/2022]
Abstract
OBJECTIVE Methicillin-resistant Staphylococcus aureus (MRSA) strains have emerged in the community, causing disease among healthy people lacking traditional risk factors for MRSA infection. This article describes an outbreak of MRSA among healthy full-term newborns. DESIGN Cases were identified and corresponding medical information collected. Telephone interviews were conducted with mothers of cases and surveillance cultures from mothers and newborns were performed. MRSA isolates were genotyped. SETTING Hospital in Chicago, Illinois, USA. PARTICIPANTS Newborns, their mothers and hospital healthcare workers. INTERVENTION Nursery infection control practices were enhanced. The MRSA-colonised healthcare workers received intranasal mupirocin. MAIN OUTCOME Within 4-23 days of birth, 11 newborns were identified with pustules, vesicles or blisters located on the head, groin, perineum, ears, legs, chin and trunk. All received antimicrobials and recovered without incident. RESULTS None of 432 peripartum women, one of 399 newborns, and two of 135 healthcare workers were nasal MRSA carriers. Available isolates from six patients, two healthcare workers, and one from an MRSA-colonised newborn were similar by pulsed-field gel electrophoresis. Other than contact with the hospital, no common exposures of MRSA transmission were identified. CONCLUSIONS MRSA strains that initially emerged in the community are now causing disease in healthcare settings. Providers should be aware that MRSA can cause skin infections among healthy newborns. Adherence to standard infection control practices is important to prevent transmission of MRSA in nurseries.
Collapse
Affiliation(s)
- L James
- Chicago Department of Public Health, Chicago, Illinois, USA.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Sepulveda L, Llancaqueo M, Zamorano J, Bermudez C, Cortes C. Cytomegalovirus Infections in Cardiac Transplant Patients: An Experience at a Clinical Hospital, University of Chile. Transplant Proc 2007; 39:622-4. [PMID: 17445560 DOI: 10.1016/j.transproceed.2006.12.030] [Citation(s) in RCA: 4] [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: 11/20/2022]
Abstract
BACKGROUND Since cytomegalovirus (CMV) infects between 20% and 50% of heart transplant patients, we reviewed our experience in 7 cases of this infection. METHODS A prospective analysis of CMV infection was performed in heart transplant patients who received cyclosporine, azathioprine, or mycophenolate mofetil, and prednisone. An elevated creatinine de novo was managed with antibody induction. RESULTS Between August 2001 and December 2005, we performed 22 heart transplants and 1 heart plus kidney transplant. Twenty-two patients were positive for CMV before transplantation. One patient died early because of graft failure. Immunosuppression included cyclosporine and prednisone (100%), azathioprine (52%), or mycophenolate (47%). Two recipients were induced with thymoglobulin and 13 with Daclizumab, while 8 did not receive any antibody. Nineteen patients received prophylaxis for CMV. Seven patients (30%) showed CMV infection, 6 of whom had received prophylaxis. Symptoms started at an average of 107 days posttransplantation in patients with prophylaxis. Three patients had gastritis, 2 pneumonia, and 1 colitis. One patient had concomitant lung aspergillosis. The two patients who received ATG developed CMV infections; 3 of the 12 with Daclizumab; and 2 who did not receive antibody. Of the CMV-infected subjects, 5 were on azathioprine and 2 on mycophenolate. All patients were treated with gancyclovir. The 1 patient with concomitant aspergillosis died. CONCLUSIONS The incidence of infection by CMV was 30%. Prophylaxis seemed to delay infection. Daclizumab induction did not increase the risk for CMV.
Collapse
Affiliation(s)
- L Sepulveda
- Cardiovascular Center, Clinical Hospital, University of Chile, Santiago, Chile.
| | | | | | | | | |
Collapse
|
19
|
Cortes C, Damasceno JC, Jamot J, Prache S. Ewes increase their intake when offered a choice of herbage species at pasture. ACTA ACUST UNITED AC 2007. [DOI: 10.1079/asc200527] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AbstractIn stall-feeding conditions, food diversity has been shown to increase an animal's motivation to eat and its level of food intake. This effect has also been suggested, but not demonstrated, for free-grazing animals. In free-grazing conditions, however, animals may have to search for the preferred plant species and this may reduce their intake rate. Moreover, the management of diverse swards faces a risk of overgrazing the preferred species and undergrazing the less preferred species, leading to resource degradation. We investigated the effect of food diversity on foraging behaviour and intake in grazing sheep, in interaction with the type of diversity (conterminal monoculturesv. mixtures) and management (two monocultures offered simultaneouslyv. successively over time). Five treatments were compared with five groups of five dry INRA 401 ewes for five periods, using a Latin-square design: LOL=grazing a monoculture ofLolium perenne cv.Herbie (L); FES=grazing a monoculture ofFestuca arundinacea cv.Florine (F); STRIPS=grazing conterminal monocultures of L and F, 0·5:0·5 by ground area, with animals having a free choice between both species; TIME=grazing L from 16:00 to 09:00 h and F from 09:00 to 16:00 h; MIX=grazing an intermeshed mixture of L and F. Sward height was maintained at 9 cm. Each period comprised a 5-day adaptation subperiod followed by a 5-day measurement subperiod. Dietary choices and intake were measured usingn-alkanes, and grazing time was assessed using the Ethosys®recording system. Intake rate was calculated as the ratio of intake to grazing time. Intake in the monoculture treatments were higher than predictions made for housed animals given similar foragesad libitum, demonstrating that sward conditions were favourable for the expression of voluntary intake in all treatments. Intake was higher in LOL than in FES, this result being consistent with predictions for stall-feeding conditions. There was no difference in diet composition, foraging behaviour and intake between the bispecific treatments (STRIPS, TIME and MIX). Intake was higher in the bispecific treatments than in LOL (1666v. 1492 g digestible organic matter per day,P<0·001). Grazing time was higher in STRIPS and MIX than in LOL (420 and 430 min respectivelyv. 366 min,P<0·01). Dry ewes increase their intake when offered a choice of herbage species at pasture, this being mediated via an increase in grazing time rather than an increase in intake rate. There was no interaction with type of diversity or type of management.
Collapse
|
20
|
Ibarra A, Jiménez A, Cortes C, Correa D. Influence of the intensity, level and phase of spinal cord injury on the proliferation of T cells and T-cell-dependent antibody reactions in rats. Spinal Cord 2006; 45:380-6. [PMID: 16955070 DOI: 10.1038/sj.sc.3101972] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [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: 11/09/2022]
Abstract
STUDY DESIGN Three independent experiments in a rat model of contusive spinal cord (SC) injury were performed. Two studied the alterations induced by SC injury on some immunological aspects of the T-cell response. The third one evaluated the motor recovery of rats with low-thoracic injuries. OBJECTIVE To examine the effect of level, intensity and phase of SC injury on T-cell proliferation and T-cell-dependent antibody response. SETTING Neuroimmunology Department, UIMEN, IMSS-CAMINA Research Center. METHODS Lymphocyte proliferation and hemagglutination assays were performed. Animals were injured either moderately or severely at T1 or T12 SC segments. Analysis of peripheral T-cell proliferation in response to mitogens and to myelin basic protein (MBP), as well as of antibody production against a T-dependent antigen, was performed at acute, subacute and chronic phases. RESULTS A significant decrease of both response to mitogens and antibody production was found especially during the acute phase and in animals with severe and high (T1)-level injury. Animals with low (T12) and moderate contusions recovered to control levels at the chronic phase. An autoimmune reaction against MBP was observed only in animals with severe contusion at low level. CONCLUSIONS The intensity, level and phase of SC injury differentially alter the function of T cells. These results will allow a better interpretation of studies directed to elucidate the role of T lymphocytes in various processes developed after SC injury.
Collapse
Affiliation(s)
- A Ibarra
- Unidad de Investigación Médica en Enfermedades Neurológicas, HE, CMN Siglo XXI, IMSS, Col. Doctores, México City, México
| | | | | | | |
Collapse
|
21
|
Chang Y, Cortes C, Brink C, Polony B, Vincent P, Xue D, Wilkie D, McNabola A, Carter C, Elting J. 148 BAY 57-9352: an inhibitor of VEGFR-2 and PDGFR receptor tyrosine kinases that demonstrates broad anti-tumor activity as a single agent in preclinical models. EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)80156-3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
22
|
|
23
|
Ménard R, Sultan AA, Cortes C, Altszuler R, van Dijk MR, Janse CJ, Waters AP, Nussenzweig RS, Nussenzweig V. Circumsporozoite protein is required for development of malaria sporozoites in mosquitoes. Nature 1997; 385:336-40. [PMID: 9002517 DOI: 10.1038/385336a0] [Citation(s) in RCA: 239] [Impact Index Per Article: 8.9] [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: 02/03/2023]
Abstract
Malaria parasites undergo a sporogonic cycle in the mosquito vector. Sporozoites, the form of the parasite injected into the host during a bloodmeal, develop inside oocysts in the insect midgut, then migrate to and eventually invade the salivary glands. The circumsporozoite protein (CS), one of the major proteins synthesized by salivary gland sporozoites, is a surface-associated molecule which is important in sporozoite infectivity to the host. Here, by gene targeting, we created Plasmodium berghei lines in which the single-copy CS gene was disrupted. The CS(-) and wild-type parasites produced similar numbers of oocysts of comparable size in the mosquito midgut. In the CS(-) oocysts, however, sporozoite formation was profoundly inhibited. CS therefore appears to have a pleiotropic role and to be vital for malaria parasites in both the vector and the host: in mosquitoes, CS is essential for sporozoite development within oocysts, and in the vertebrate host it promotes sporozoite attachment to hepatocytes.
Collapse
Affiliation(s)
- R Ménard
- Michael Heidelberger Division of Immunology, Department of Pathology, Kaplan Cancer Center, New York University Medical Center, 10016, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Abstract
Twenty active elderly subjects (mean age = 66.4 years, range 51-81) participated in a 12-week weight-training program to determine the possibility of increasing muscular strength and lean body weight. The training utilized variable resistance weight machines which trained the major muscle groups. The male subjects (n = 11) experienced an average increase of 66.1% (SD = 19.39, p < 0.00001) in total maximum weight lifted while the females (n = 9) showed an average increase of 72.2% (SD = 33.44, p < 0.001). Lean body weight, which was calculated by skinfold measurements for each group did increase, but was not statistically significant (males p < 0.11, females p < 0.18). The study demonstrated the positive effects a weight-training regimen can have on an elderly population.
Collapse
Affiliation(s)
- T L Dupler
- Department of Human Sciences and Humanities, University of Houston-Clear Lake, TX 77058
| | | |
Collapse
|
25
|
Kreider R, Drinkard B, Cortes C, Lester C, Somma T, Woodhouse M, Shall SL. 597 EFFECTS OF POST-EVENT MASSAGE THERAPY ON MUSCLE RECOVERY AND PERFORMANCE IN REPEATED ULTRAENDURANCE CYCLING T. Drews. Med Sci Sports Exerc 1990. [DOI: 10.1249/00005768-199004000-00596] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
26
|
Drinkard B, Kreider R, Drews T, Cortes C, Lester C, Somma T, Woodhouse M, Shall L. 787 EFFECTS OF REPEATED ULTRAENDURANCE CYCLING ON MUSCLE INJURY. Med Sci Sports Exerc 1990. [DOI: 10.1249/00005768-199004000-00786] [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: 11/21/2022]
|
27
|
Cortes C, Kreider R, Drinkard B, Drews T, Lester C, Somma T, Woodhouse M, Shall L. 149 EFFECTS OF REPEATED ULTRAENDURANCE CYCLING ON ELECTROLYTES. Med Sci Sports Exerc 1990. [DOI: 10.1249/00005768-199004000-00149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
28
|
Csendes A, González P, Olea E, Orellana P, Papapietro K, Cortes C, Diaz JC, Braghetto I, Lillo R, Humeres P. [Diagnosis of gastroesophageal reflux by radioisotopic techniques]. Rev Med Chil 1989; 117:1374-80. [PMID: 2519376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We evaluated 148 patients (mean age 45 years) with clinically evident gastroesophageal reflux. A radioisotopic test with 99mTc sulphur-colloid was performed in all; endoscopy in 146, biopsy in 24, acid reflux test and manometric evaluation in 141 and radiologic studies in 85. Sensitivity of the different techniques was: radioisotopes 92%, radiology 87%, acid reflux test 84%; endoscopy 63% and manometric studies 61%. Severity of reflux and esophagitis was adequately predicted from radioisotopic evaluation. We conclude that this radioisotopic test is highly reliable for the diagnosis of gastroesophageal reflux.
Collapse
|
29
|
Corbí AL, Cortes C, Bousquet J, Basomba A, Cistero A, Garcia-Selles J, d'Amato G, Carreira J. Allergenic cross-reactivity among pollens of Urticaceae. Int Arch Allergy Appl Immunol 1985; 77:377-83. [PMID: 2410372 DOI: 10.1159/000233812] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Common antigenic determinants have been observed between Parietaria and Urtica dioica pollen. The four Parietaria pollens selected (P. judaica, P. officinalis, P. lusitanica and P. mauritanica) are shown to possess a high allergenic homology. IgE-binding structures, homologous to the P. judaica main allergenic polypeptide (Pj10), were found in the other species by immunodetection. Monoclonal antibodies specific to the Pj10 polypeptide recognized proteins from the four Parietaria pollens. Skin prick test and RAST inhibition yielded results that also indicated a high allergenic cross-reactivity among these pollens, with homologous peptides bearing common antigenic and allergenic determinants. On the other hand, U. dioica pollen showed only a slight allergenic similarity to Parietaria. The potential allergenic activity of these pollens is discussed.
Collapse
|
30
|
Klinger J, Lopetegui G, Ronban E, Otaiza E, Cortes C, Hirsch L, Donoso S. [Incipient gastric cancer]. Rev Med Chil 1971; 99:555-9. [PMID: 5571329] [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]
|