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1.
Rev. esp. patol. torac ; 31(4): 218-223, dic. 2019. graf, tab
Artigo em Espanhol | IBECS | ID: ibc-187181

RESUMO

Objetivo: determinar si la metabolómica aplicada a una muestra de sudor permite diferenciar la concentración relativa de ciertos metabolitos en pacientes con cáncer de pulmón en estadio inicial (I - II) respecto a estadios avanzados (III - IV). Pacientes y métodos: fueron incluidos 21 pacientes diagnosticados de cáncer escamoso de pulmón en un hospital universitario. Para la inducción del sudor se utilizaron discos de Pilogel(R) y la recolección mediante dispositivo Macroduct(R) conservando la muestra a -80 ºC. Para el análisis metabolómico se utilizó un cromatógrafo de líquidos acoplado a un espectrómetro de masas de alta resolución (LC - QTOF) provisto de fuente de ionización por electroespray. Los datos se procesaron con el software MassHunter Workstation y se realizó análisis de cambio (FC, Fold Change Analysis) para detectar las diferencias de concentración relativa de metabolitos entre los diferentes estadios tumorales. Resultados: se estudiaron 21 muestras de sudor pertenecientes a 9 pacientes en estadio I - II y 12 en estadio III - IV. En una lista preferente de 16 compuestos que incluyeron diversos aminoácidos, azúcares, ácidos carboxílicos y ácidos grasos, no se observaron cambios significativos según la extensión tumoral. El análisis de cambio mostró que una trihexosa (FC: -2,175) fue el compuesto con diferencias significativas de concentración relativa en las muestras de sudor según los dos estadios tumoral comparados. Conclusión: en muestras de sudor de pacientes con carcinoma escamoso de pulmón la huella metabolómica se mantiene relativamente estable con escasas diferencias en la concentración relativa de metabolitos, únicamente se observó un cambio significativo en una trihexosa en estadios de cáncer de pulmón inicial y avanzado


Objective: To determine whether applying metabolomics to a sweat sample allows different metabolite concentrations to be differentiated in patients with early-stage lung cancer (stages I-II) compared to advanced stages (III-IV). Patients and methods: 21 patients diagnosed with squamouscell lung cancer in a university hospital were included. Pilogel(R) discs were used to induce sweat, which was collected using the Macroduct(R) system, storing the samples at -80 ºC. For the metabolomic analysis, a liquid chromatograph was used, attached to a high-resolution mass spectrometer (LC - QTOF) supplied with electrospray ionization. The data was processed using the MassHunter Workstation software and a fold change analysis (FC) was done to detect differences in metabolite concentrations between different tumor stages. Results: 21 sweat samples from 9 stage I-II patients and 12 stage III-IV patients were studied. In a list of 16 compounds that included several amino acids, sugars, carboxylic acids and fatty acids, no significant changes were observed according to tumor extension. The change analysis showed that a trihexose (FC: -2.175) was the compound with significant concentration differences in sweat samples according to the two tumor stages compared. Conclusion: In sweat samples from patients with squamouscell lung cancer, metabolomic markers remain relatively stable with slight differences in metabolite concentrations, only observing a significant change in a trihexose between early and advanced stages of lung cancer


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Idoso , Biomarcadores Tumorais/análise , Suor/química , Neoplasias de Células Escamosas/diagnóstico , Suor/metabolismo , Neoplasias Pulmonares/diagnóstico , Estadiamento de Neoplasias/classificação , Espectrometria de Massas/métodos , Metabolômica/métodos
2.
Rev. esp. patol. torac ; 31(2): 138-143, jun. 2019. graf, tab
Artigo em Espanhol | IBECS | ID: ibc-183655

RESUMO

Objetivo: Evaluar en pacientes con enfermedad pulmonar obstructiva crónica respecto a pacientes con cáncer epidermoide de pulmón en estadio inicial (CP I-II) si en el metaboloma del sudor existen diferencias en los compuestos. Metodología: Se incluyeron 11 pacientes con EPOC y 9 pacientes con CP I-II. El sudor se recogió siguiendo una técnica estandarizada y la muestra fue congelada a -80ºC hasta el análisis metabolómico, para lo que se utilizó un cromatógrafo de líquidos acoplado a un espectrómetro de masas de alta resolución (LC-QTOF) con ionización por electrospray. Se realizó un análisis de cambio (AC) para detectar las diferencias de concentración relativa de metabolitos entre grupos. Resultados. Las características basales de los sujetos incluidos en los dos grupos fueron similares. En la clínica destaca que un 67% de los enfermos con CP I-II (67%) no manifestaron síntomas atribuibles al tumor. El análisis metabolómico mostró que en el análisis de cambio una tetrahexosa presentó diferencias entre el grupo de enfermos con EPOC y con CP I-II (AC: - 4,021), igual tendencia se observó en un trisacárido fosfato (AC: -1,741) y en un lípido sulfónico (AC: -1,920). Conclusión: En muestras de sudor, el análisis de cambio muestra metabolitos con potencialidad para diferenciar entre pacientes EPOC y con CP I-II. Este resultado puede tener aplicabilidad en el cribado del cáncer de pulmón


Objective: To evaluate whether there are differences in sweat metabolite compounds in patients with chronic obstructive pulmonary disease compared to patients with early-stage squamous cell lung cancer (LC I-II). Methods: 11 patients with COPD and 9 patients with LC I-II were included. Sweat was collected using a standardized technique and the sample was frozen at -80ºC until the metabolic analysis was performed, which used a liquid chromatograph coupled with a high-resolution mass spectrometer (LC-QTOF) with electrospray ionization. A change analysis (CA) was done to detect the differences in the relative concentrations of metabolites between groups. Results: The baseline characteristics of subjects included in the two groups were similar. In the clinical presentation, it is worth noting that 67% of patients with LC I-II (67%) did not show symptoms that could be attributed to the tumor. The metabolic analysis showed that in the change analysis, a tetra-hexose showed differences between the COPD group and LC I-II group (CA: -4.021), the same pattern observed in a phosphate trisaccharide (CA: -1.741) and in a sulphonic lipid (AC: -1.920). Conclusion: In sweat samples, the change analysis shows metabolites with the potential to differ between patients with COPD and those with LC I-II. This result can be applied in lung cancer screening


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Idoso , Suor , Doença Pulmonar Obstrutiva Crônica/metabolismo , Neoplasias Pulmonares/metabolismo , Metaboloma , Espectrometria de Massas , Estudos Prospectivos , Cromatografia , Estatísticas não Paramétricas
3.
Rev. esp. patol. torac ; 26(4): 253-258, oct.-dic. 2014. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-132096

RESUMO

OBJETIVOS: detectar si existen compuestos en el sudor con potencialidad diagnóstica en el cáncer de pulmón (CP). MÉTODOS: estudio observacional, de cohortes, realizado en un Hospital Universitario. Los sujetos fueron adscritos a grupo con CP, grupo sin CP y sin factor de riesgo (no fumadores) y grupo sin CP y con factor de riesgo (consumo > 20 paquetes/año). Fueron excluidos sujetos > 80 años, existencia de enfermedad grave de órgano, neoplasia extrapulmonar o tratamiento previo con citostáticos. La muestra de sudor se conservó a -80 ºC. Para su análisis se trasvasó cuantitativamente a viales del automuestreador para extracción en fase sólida y retener los componentes de interés. Tras eliminar la matriz de la muestra, los compuestos se eluyeron al instrumento analítico, utilizando la fase móvil cromatográfica. En esta etapa se aplicó el diseño quimiométrico más adecuado en cada caso. RESULTADOS: se incluyeron 96 sujetos. Con las muestras de sudor de cada uno de los 3 subgrupos se formó un pool, que se inyectó 10 veces consecutivas en el cromatógrafo de líquidos acoplado al espectrómetro de masas en tándem (LC-MS/MS). Se observó discriminación entre los tres subgrupos mediante el análisis por componentes principales del perfil de metabolitos detectado por LC-MS/MS y demostró la capacidad para clasificar los pacientes con CP de los individuos control, con y sin factor de riesgo. CONCLUSIÓN: el estudio del sudor abre un campo de investigación novedoso y con importante aplicabilidad clínica, ya que este modelo podría convertirse en una herramienta diagnóstica no invasiva en el CP


AIMS: to detect the presence of sweat compounds with potential diagnostic of lung cancer (LC). METHODS: observational cohort study in a University Hospital. The participants were assigned in a group with LC, a group without LC and without risk factor (non-smoking) and a group without LC and with risk factor (tobacco consumption > 20 package/year). The subjects > 80 years old, severe lung organ disease, extrapulmonary neoplasia or cytostatic pre-treatment were excluded. The sweat sample was stored at -80ºC. For analysis, it was transferred into autosampler vials for solid phased extraction (SPE) in order to keep the interesting compounds. After removing the sample matrix, the compounds were eluted to the analytical instrument using the chromatographic mobile phase. At this stage, the most suitable chemometric design was applied in each case. RESULTS: the population consisted of 96 subjects. A pool establish by the three subgroups sweat samples was injected ten times and row in the liquid chromatograph coupled to mass spectrometer (LC-MS/MS). In was noticed a discrimination between the three subgroups by analyzing the main compounds in metabolite profile, detected by LC-MS/MS. This proved the ability to distinguish patients with LC from control subjects with and without risk factor. CONCLUSIONS: the sweat study open up a novel research field with an important clinical relevance, because this model could become a non invasive diagnostic tool in the LC


Assuntos
Humanos , Metabolômica/métodos , Suor/química , Neoplasias Pulmonares/diagnóstico , Biomarcadores/análise , Detecção Precoce de Câncer , Fatores de Risco , Fumar/efeitos adversos
4.
Rev. esp. patol. torac ; 23(4): 278-282, oct.-dic. 2011. tab
Artigo em Espanhol | IBECS | ID: ibc-104703

RESUMO

Introducción: La presencia de osteoporosis (OTP) añade comorbilidad al proceso del trasplante pulmonar (TxP). Su identificación y tratamiento disminuirá el riesgo de fracturas. Objetivos: Comparar la utilidad (..) (AU)


Introduction: The presence of osteoporosis (OTP) adds comorbidity to the lung transplant (LTx) process. Its identification and treatment (..) (AU)


Assuntos
Humanos , Masculino , Feminino , Transplante de Pulmão , Osteoporose/prevenção & controle , Doença Pulmonar Obstrutiva Crônica/cirurgia , Fatores de Risco , Valor Preditivo dos Testes , Protocolos Clínicos , Densitometria , Estudos Prospectivos
5.
Rev. esp. patol. torac ; 23(4): 291-296, oct.-dic. 2011. tab
Artigo em Espanhol | IBECS | ID: ibc-104705

RESUMO

Objetivos: Estudiar si el syndrome de apneas-hipopneas del sueño (SAHS) induce estrés miocárdio valorado mediante marcadores séricos. Pacientes y métodos: Estudio (..) (AU)


Patients and methods: Prospective, observational study with consecutive sampling conducted in patients with (..)(AU)


Assuntos
Humanos , Apneia Obstrutiva do Sono/fisiopatologia , Isquemia Miocárdica/fisiopatologia , Consumo de Oxigênio/fisiologia , Miocárdio Atordoado/fisiopatologia , Biomarcadores/análise , Polissonografia
7.
Transplant Proc ; 42(8): 3020-2, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20970598

RESUMO

UNLABELLED: INTRODUCTIóN: After cystic fibrosis, lung transplantation (LT) patients with prior chronic obstructive pulmonary disease (COPD) are most susceptible to loss of bone mineral density (BMD). OBJECTIVES: To determine the prevalence of BMD loss among COPD patients being evaluated as LT candidates, seeking to identify, their risk profile. PATIENTS AND METHODS: This cross-sectional study included COPD patients who were LT candidates evaluated from January 2007 to December 2009. To identify patients at risk of fracture, BMD at the femoral neck and lumbar spine was assessed by bone densitometry. For categorization, we followed the World Health Organization criteria. To evaluate the risk profile, we recorded data on age, sex, smoking, lung function forced expiratory volume in 1 second, distance covered in the 6-minute walk test, body mass index, and degree of dyspnea. We recorded individual data as well as grouped them the multidimensional BODE (Body mass index Obstruction Dyspnea Exercise capacity) index. RESULTS: The study cohort consisted of 64 patients (51 men and 13 women). The overall prevalence of low BMD in any of the explored territories was 84.4%, affecting 88.2% of men and 69.2% of women. Osteoporosis was identified in 56.2% of patients, reaching a serious degree in 11/64 (17.2%). No significant differences were observed in any evaluated parameter when patients were separated into those with normal versus pathological BMD. When patients with osteopenia and osteoporosis were compared, we observed that the former showed a lower exercise capacity (P=.023) and a higher BODE index (P=.002). CONCLUSIONS: The prevalence of a low BMD level was increased among male patients with a worse BODE index, especially due to a reduced exercise capacity.


Assuntos
Densidade Óssea , Neoplasias Pulmonares , Doença Pulmonar Obstrutiva Crônica/fisiopatologia , Estudos de Coortes , Estudos Transversais , Feminino , Humanos , Masculino , Prevalência , Doença Pulmonar Obstrutiva Crônica/cirurgia
8.
Transplant Proc ; 42(8): 3023-5, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20970599

RESUMO

INTRODUCTION: Bronchiolitis obliterans (BO) occurring after allogeneic bone marrow transplant (ABMT) may be an expression of lung damage of multifactorial origins. At present, it is not a usual condition for lung transplant (LT), accounting for <1% of all indications in the international registry. We sought, to describe the clinical features and outcomes of patients undergoing LT for BO after ABMT in our group. PATIENTS AND METHODS: We undertook a cross-sectional study of patients with an indication for LT due to BO after ABMT from the beginning of our program. We recorded the type of transplant, patient age, clinical course, functional outcome, and survival. RESULTS: Among 313 LT, 13 cases (4.2%) were due to BO, including 3 after ABMT (0.96%). ABMT was indicated after bone marrow aplasia in 2 cases and acute myeloid leukemia in the other patient. The patients were 2 men (both 35 years old) and 1 woman, aged 25 years. All subjects received double elective LT at 24, 20, and 9 years post ABMT. At the time of LT, all displayed severe obstructive ventilatory defects with a forced expiratory volume in 1 second (FEV1)<30% and partial respiratory insufficiency. The initial immunosuppression was cyclosporine, mycophenolate mofetil, and steroids in all cases. Two of the subjects required changes in the immunosuppressive regimen: 1 due to chronic graft rejection with subsequent functional recovery and the other due to hematologic and neurologic toxicity. After 96, 37, and 9 months, all the patients were alive with baseline dyspnea of functional class 0 and a FEV1 of about 68%. CONCLUSION: LT is an effective therapy in terms of lung function and survival for patients with respiratory failure secondary to the development of BO after ABMT.


Assuntos
Transplante de Medula Óssea , Bronquiolite Obliterante/cirurgia , Transplante de Pulmão , Adulto , Estudos Transversais , Feminino , Humanos , Masculino
9.
Transplant Proc ; 42(8): 3208-10, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20970654

RESUMO

INTRODUCTION: The loss of bone mineral density (BMD) affects more than half of the patients on the waiting list for lung transplantation (LT), increasing their disease burden. OBJECTIVE: To describe the prevalence of BMD loss among patients evaluated as candidates for LT. PATIENTS AND METHODS: We included all hospitalized patients evaluated as LT candidates over the last 3 years, excluding pediatric subjects under 17 years of age. We estimated BMD in the femoral neck and lumbar spine. Categorization used the World Health Organization criteria. RESULTS: Among 156 patients, 64 (41%) had chronic obstructive pulmonary disease (COPD) with only 2 (3.1%) having densitometry before referral; 55 (35.3%), interstitial lung disease (ILD) with 9 (16.4%) BMD values; and 21 (13.5%) cystic fibrosis (CF) with only 3 (14.3%) with BMD screening. The 116 patients (74.4%) who had BMD below normal values included 84.4% of COPD, 67.3% of the ILD, and 81% of the CF patients. The detection of these patients allowed us to initiate preventive treatment depending on the degree of risk of bone fracture. Half of the patients evaluated were eventually included on the LT waiting list, with 70% of them finally receiving a transplant. CONCLUSIONS: Bone mineral loss was highly prevalent among this population but its investigation before referral for LT was scarce. Its identification allows primary or secondary prophylaxis to be started, seeking to reduce the risk of bone fracture after transplantation.


Assuntos
Densidade Óssea , Transplante de Pulmão , Feminino , Humanos , Masculino
10.
Rev. esp. patol. torac ; 22(3): 180-184, jul.-sept. 2010. ilus, tab, graf
Artigo em Espanhol | IBECS | ID: ibc-97258

RESUMO

La indicación de trasplante pulmonar (TxP) en las enfermedades poco prevalentes es escasa, siendo desconocido el impacto en su historia natural (..) (AU)


The indications for lung transplant (TxP) in uncommon diseases is scarce and undocumented (..) (AU)


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Doenças Raras/complicações , Transplante de Pulmão/estatística & dados numéricos , Bronquiolite Obliterante/cirurgia , Síndrome de Kartagener/cirurgia , Linfangioleiomiomatose/cirurgia
11.
Rev. esp. patol. torac ; 22(3): 185-190, jul.-sept. 2010. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-97259

RESUMO

Introducción: en el síndrome de apneas-hipopneas del sueño (SAHS) la lesión del endotelio vascular es uno de los mecanismos involucrados en la aterogénesis (..) (AU)


Introduction: In Sleep Apnoea-Hypopnea Syndrome (SAHS) an injury to the vascular endothelium is one of the mechanism (..) (AU)


Assuntos
Humanos , Apneia Obstrutiva do Sono/fisiopatologia , Hipóxia/fisiopatologia , Moléculas de Adesão Celular , Consumo de Oxigênio/fisiologia , Distribuição por Idade e Sexo , Doenças Cardiovasculares/epidemiologia , Fatores de Risco , Estudos Prospectivos , Polissonografia
13.
Rev. esp. patol. torac ; 22(2): 120-126, abr.-jun. 2010. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-97251

RESUMO

Objetivos: determinar si el síndrome de apneas-hipopneas del sueño (SAHS) incrementa las cifras de catecolaminas y a través de este mecanismo puede alterar el perfil lipídico. Pacientes y métodos: estudio prospectivo, grupo control y muestreo consecutivo de sujetos con sospecha de SAHS. Fueron excluidos aquellos con enfermedad grave de órgano o ingesta de fármacos con efecto sobre la actividad simpática y/o perfil lipídico. Según el índice de apneas-hipopneas (IAH) obtenido en la polisomnografía, los sujetos se asignaron al grupo clínico (IAH >5) o al grupo control (IAH <5). En ambos se compararon las cifras de colesterol total, HDL-c, triglicéridos y noradrenalina urinaria. Resultados: Fueron incluidos 33 en el grupo clínico y 16 en el control sin existir diferencias en edad, género e índice de masa corporal (IMC). En el grupo clínico, la noradrenalina en orina y colesterol total se elevaron significativamente mientras que disminuyeron las del HDL-colesterol. Se observó una correlación significativa entre los valores de la saturación periférica de O2 (SapO2) y la noradrenalina urinaria, aunque la variabilidad de ésta sólo se asoció independientemente con el índice de desaturación y el IMC. También se detectó correlación significativa entre la noradrenalina urinaria y colesterol total, HDL-c y triglicéridos, sin embargo esta correlación desapareció al ajustar por edad, género e IMC. Conclusiones: el SAHS aumenta la actividad simpática nocturna y el índice de desaturación es el factor de mayor influencia. En los pacientes con SAHS se incrementan significativamente las cifras séricas de colesterol total mientras descienden las del HDL-c, aunque estos resultados no fueron explicados de forma independiente por el aumento en la actividad simpática (AU)


Objectives: To determine whether the syndrome sleep apnea-hypopnea syndrome (SAHS) increases catechilamine value and throught this mechanism may alter the lipid profile. (..) (AU)


Assuntos
Humanos , Síndromes da Apneia do Sono/epidemiologia , Catecolaminas/análise , Lipídeos/sangue , Apneia Obstrutiva do Sono/fisiopatologia , Hipóxia/fisiopatologia , Norepinefrina/urina , Sistema Nervoso Simpático/fisiologia , Polissonografia
14.
Rev. esp. patol. torac ; 21(3): 154-158, jul.-sept. 2009. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-80757

RESUMO

Introducción: en el síndrome de apneas-hipopneas del sueño (SAHS) son frecuentes los episodios de hipoxemia-reoxigenación que pueden producir sustancias oxígeno reactivas y estrés oxidativo. Pacientes y método: estudio prospectivo, con muestreo consecutivo, para determinar si la hipoxemia nocturna puede provocar oxidación proteica. Fueron incluidos pacientes con sospecha de SAHS, indicación de una polisomnografía, edad comprendida entre 25 y 49 años, y ausencia de enfermedad sistémica. Se compararon los resultados observados en un grupo clínico (IAH > 10) con los de un grupo control (IAH < 5). Resultados: se excluyeron 3 pacientes por presentar un IAH entre 5 y 10. Fueron incluidos 36 sujetos (edad = 40 ± 6,1 años, 30 hombres y 6 mujeres, IMC = 31 ± 5,9), 23 pertenecientesínas carboniladas fueron de al grupo clínico y 13 al grupo control. En el grupo clínico, los valores de prote 0,14 ± 0,179 nmol/mg y de 0,10 ±0,066 nmol/mg en el grupo control (p = 0,348). No se observó correlación significativa entre las cifras de proteínas carboniladas y el índice de apneas-hipopneas (rho = 0,197; p = 0,249), índice de de saturación >3% (rho = 0,129, p = 0,452) y porcentaje de sueño con SaO2 <90% (rho = 0,058, p = 0,736). Conclusiones: en pacientes con edad media y SAHS moderado, las proteínas carboniladas séricas se observaron más elevadas, aunque sin alcanzar diferencias significativas (AU)


Introduction: episodes of hypoxemia-reoxigenation are frequent insleep apnea-hypopnea syndrome (SAHS) and can produce reactiveoxygen substances and oxidative stress.Patients and methods: prospective study, with consecutive sampling to determine if nocturnal hypoxemia can produce oxidation. Patients with SAHS suspicion, polysomnography indication, age between 25-49 years old and without systemic disease were included. Results obtained in clinical group (IAH > 10) were comparedwith control group (IAH < 5). Resul years old, 30 men and 6 women, BMI = 31 ± 5.9), 23 patients were from clinical group and 13 from control group. In clinical group, carbonylated proteins values were 0.14 ± 0.179 nmol/mg and 0.10 ± 0.066 nmol/mg incontrol group (p = 0.348). There was not significative correlation between carbonyl proteins and apnea-hypopnea index (rho = 0.197, p = 0.249), desaturation index >3% (rho = 0.129, p = 0.452) and sleep time spent with SaO2 <90% (rho = 0.058, p = 0.736). Conclusions: in patientes with mean age and moderate SAHS, protein carbonyls were higher althout not reaching significant differences (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Síndromes da Apneia do Sono/metabolismo , Oxirredução , Proteínas/metabolismo , Índice de Gravidade de Doença , Estudos de Casos e Controles , Estudos Prospectivos
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