RESUMEN
We evaluated whether hyaluronan (HA) levels in the sputum could be used as a noninvasive tool to predict progressive disease and treatment response, as detected in a computed tomography scan in non-small cell lung cancer (NSCLC) patients. Sputum samples were collected from 84 patients with histological confirmation of NSCLC, 33 of which were in early-stage and 51 in advanced-stage disease. Patients received systemic chemotherapy (CT) after surgery (n=36), combined CT and immunotherapy (IO) (n=15), or targeted therapy for driver mutation and disease relapse (N=4). The primary end-point was to compare sputum HA levels in two different concentrations of hypertonic saline solution with overall survival (OS) and the secondary and exploratory end-points were radiologic responses to treatment and patient outcome. Higher concentrations of HA in the sputum were significantly associated to factors related to tumor stage, phenotype, response to treatment, and outcome. In the early stage, patients with lower sputum HA levels before treatment achieved a complete tumor response after systemic CT with better progression-free survival (PFS) than those with high HA levels. We also examined the importance of the sputum HA concentration and tumor response in the 51 patients who developed metastatic disease and received CT+IO. Patients with low levels of sputum HA showed a complete tumor response in the computed tomography scan and stable disease after CT+IO treatment, as well as a better PFS than those receiving CT alone. HA levels in sputum of NSCLC patients may serve as a candidate biomarker to detect progressive disease and monitor treatment response in computed tomography scans.
Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Carcinoma de Pulmón de Células no Pequeñas/diagnóstico por imagen , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Humanos , Ácido Hialurónico/uso terapéutico , Neoplasias Pulmonares/diagnóstico por imagen , Neoplasias Pulmonares/tratamiento farmacológico , Esputo , Tomografía Computarizada por Rayos X/métodosRESUMEN
We evaluated whether hyaluronan (HA) levels in the sputum could be used as a noninvasive tool to predict progressive disease and treatment response, as detected in a computed tomography scan in non-small cell lung cancer (NSCLC) patients. Sputum samples were collected from 84 patients with histological confirmation of NSCLC, 33 of which were in early-stage and 51 in advanced-stage disease. Patients received systemic chemotherapy (CT) after surgery (n=36), combined CT and immunotherapy (IO) (n=15), or targeted therapy for driver mutation and disease relapse (N=4). The primary end-point was to compare sputum HA levels in two different concentrations of hypertonic saline solution with overall survival (OS) and the secondary and exploratory end-points were radiologic responses to treatment and patient outcome. Higher concentrations of HA in the sputum were significantly associated to factors related to tumor stage, phenotype, response to treatment, and outcome. In the early stage, patients with lower sputum HA levels before treatment achieved a complete tumor response after systemic CT with better progression-free survival (PFS) than those with high HA levels. We also examined the importance of the sputum HA concentration and tumor response in the 51 patients who developed metastatic disease and received CT+IO. Patients with low levels of sputum HA showed a complete tumor response in the computed tomography scan and stable disease after CT+IO treatment, as well as a better PFS than those receiving CT alone. HA levels in sputum of NSCLC patients may serve as a candidate biomarker to detect progressive disease and monitor treatment response in computed tomography scans.
RESUMEN
Hyaluronan (HA) shows promise for detecting cancerous change in pleural effusion and urine. However, there is uncertainty about the localization of HA in tumor tissue and its relationship with different histological types and other components of the extracellular matrix, such as angiogenesis. We evaluated the association between HA and degree of malignancy through expression in lung tumor tissue and sputum. Tumoral tissue had significantly increased HA compared to normal tissue. Strong HA staining intensity associated with cancer cells was significant in squamous cell carcinoma compared to adenocarcinoma and large cell carcinoma. A significant direct association was found between tumors with a high percentage of HA and MVD (microvessel density) in tumoral stroma. Similarly significant was the direct association between N1 tumors and high levels of HA in cancer cells. Cox multivariate analysis showed significant association between better survival and low HA. HA increased in sputum from lung cancer patients compared to cancer-free and healthy volunteers and a significant correlation was found between HA in sputum and HA in cancer tissue. Localization of HA in tumor tissue was related to malignancy and reflected in sputum, making this an emerging factor for an important diagnostic procedure in patients suspected to have lung cancer. Further study in additional patients in a randomized prospective trial is required to finalize these results and to validate our quantitative assessment of HA, as well as to couple it to gold standard sputum cytology.
Asunto(s)
Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Carcinoma/química , Ácido Hialurónico/análisis , Neoplasias Pulmonares/química , Esputo/química , Biopsia , Biomarcadores de Tumor/análisis , Estudios de Casos y Controles , Carcinoma/patología , Ensayo de Inmunoadsorción Enzimática , Inmunohistoquímica , Neoplasias Pulmonares/patología , Pulmón/química , Pulmón/patología , Estadificación de Neoplasias , Reproducibilidad de los Resultados , Factores de Riesgo , Sensibilidad y Especificidad , Estadísticas no Paramétricas , Fumar/efectos adversos , Células del Estroma/química , Células del Estroma/patologíaRESUMEN
Hyaluronan (HA) shows promise for detecting cancerous change in pleural effusion and urine. However, there is uncertainty about the localization of HA in tumor tissue and its relationship with different histological types and other components of the extracellular matrix, such as angiogenesis. We evaluated the association between HA and degree of malignancy through expression in lung tumor tissue and sputum. Tumoral tissue had significantly increased HA compared to normal tissue. Strong HA staining intensity associated with cancer cells was significant in squamous cell carcinoma compared to adenocarcinoma and large cell carcinoma. A significant direct association was found between tumors with a high percentage of HA and MVD (microvessel density) in tumoral stroma. Similarly significant was the direct association between N1 tumors and high levels of HA in cancer cells. Cox multivariate analysis showed significant association between better survival and low HA. HA increased in sputum from lung cancer patients compared to cancer-free and healthy volunteers and a significant correlation was found between HA in sputum and HA in cancer tissue. Localization of HA in tumor tissue was related to malignancy and reflected in sputum, making this an emerging factor for an important diagnostic procedure in patients suspected to have lung cancer. Further study in additional patients in a randomized prospective trial is required to finalize these results and to validate our quantitative assessment of HA, as well as to couple it to gold standard sputum cytology.
Asunto(s)
Carcinoma/química , Ácido Hialurónico/análisis , Neoplasias Pulmonares/química , Esputo/química , Adulto , Anciano , Anciano de 80 o más Años , Biomarcadores de Tumor/análisis , Biopsia , Carcinoma/patología , Estudios de Casos y Controles , Ensayo de Inmunoadsorción Enzimática , Femenino , Humanos , Inmunohistoquímica , Pulmón/química , Pulmón/patología , Neoplasias Pulmonares/patología , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Reproducibilidad de los Resultados , Factores de Riesgo , Sensibilidad y Especificidad , Fumar/efectos adversos , Estadísticas no Paramétricas , Células del Estroma/química , Células del Estroma/patologíaRESUMEN
Glossodynia or burning mouth syndrome is a multifunctional disorder. The oral mucosa is apparently normal but patients report burning and dried mouth and painful tongue and lips. The present study reports biochemical and physiological markers in saliva of patients presenting glossodynia compared to normal subjects. Saliva-buffering capacity and contents of protein and hyaluronic (HA) acid were similar in both groups. In contrast, chondroitin sulfate (CS) concentration was decreased in the saliva of patients with glossodynia when compared to control group (p=0.0036). On the other hand glandular kallikrein showed increased activity in the saliva of patients compared to normal subjects (p<0.0001). The data suggest involvement of the kinin system, possibly related to the low levels of CS. Depression could explain the low level of serotonin in patient serum (p=0.0478).
Asunto(s)
Sulfatos de Condroitina/análisis , Glosalgia/diagnóstico , Calicreínas/análisis , Saliva/química , Biomarcadores , Glosalgia/metabolismo , HumanosRESUMEN
PURPOSE: To investigate the effect of pentoxifylline (PTX) in subjects with inactive Graves' ophthalmopathy (GO) through a specific quality of life (QOL) questionnaire and exophthalmometry readings. METHODS: Eighteen females were randomly divided in two groups. Group A (n=9) was treated with PTX 1200 mg orally/day for 6 months. Group B (n=9) received placebo during the initial 6 months and then PTX for another 6 months. Proptosis measurements were carried out every 3 months and a questionnaire graded from 0 to 10 according to the severity of the symptoms was performed at baseline and after placebo and PTX administration. RESULTS: At baseline, Group A questionnaire score values were 5.5 (median; range 3.5 to 8.0), and 5.0 after 6 months (3.0 to 6.0; p=0.01). In Group B, baseline values were not significantly different after 6 months of placebo: 6.0 (4.5 to 7.0) and 5.5 (4.5 to 7.0), respectively. However, a significant change was observed 6 months after PTX: 4.0 (2.0 to 5.0; p<0.001). Patients in Group A had a progressive improvement of proptosis during PTX: at baseline, 23 mm (median; range 20 to 32); after 3 months, 23 mm (18 to 30; p=0.02); and after 6 months, 23 mm (18 to 30; p=0.005). In Group B, proptosis remained stable during placebo: at baseline, 23 mm (21 to 25); after 3 months, 23 mm (20 to 25); and after 6 months, 23.5 mm (20 to 25). A significant change was observed after 3 and 6 months of PTX: 22 mm (19 to 24; p=0.0006) and 20.8 mm (17 to 25; p=0.0003), respectively. CONCLUSIONS: Pentoxifylline seems to improve the QOL of patients in the inactive phase of GO. The objective findings of the proptosis readings corroborate to suggest that PTX may be an effective and promising drug in the inactive phase of GO.
Asunto(s)
Enfermedad de Graves/tratamiento farmacológico , Pentoxifilina/uso terapéutico , Inhibidores de Fosfodiesterasa/uso terapéutico , Calidad de Vida , Encuestas y Cuestionarios , Adulto , Terapias Complementarias , Exoftalmia/fisiopatología , Femenino , Enfermedad de Graves/fisiopatología , Humanos , Oftalmodinamometría , Pentoxifilina/efectos adversos , Inhibidores de Fosfodiesterasa/efectos adversos , Estudios ProspectivosRESUMEN
Schistosomiasis mansoni is a non-cirrhotic fibrogenic disease model. The mild form shows normal liver function with slight or no liver fibrosis whereas in the periportal fibrosis form the manifestations of portal hypertension prevail over hepatocellular failure. We assessed serum hyaluronic acid as a marker of the course of the disease. We studied 24 patients presenting with pure chronic forms of schistosomiasis and seven with cirrhosis. In order to measure serum hyaluronic acid we developed a sandwich fluorescent ELISA-like assay. alpha2-Macroglobulin, prothrombin index, gamma-glutamyltransferase, platelets and ultrasound parameters were also assessed. The 20 micro g/l (ROC plot) hyaluronic acid level differentiated patients with the mild form (with no portal hypertension) from those with the severe form of schistosomiasis with 78% diagnostic efficacy. The 80 micro g/l cut-off value differentiated patients with the severe form of schistosomiasis from the cirrhotic group with similar diagnostic efficacy. alpha2-Macroglobulin provided no distinction between the groups studied. The hyaluronic acid serum concentration correlated positively with the splenic vein diameter (P=0.004) and marginally with alpha2-macroglobulin (P=0.059). Serum hyaluronic acid is a good marker for the initial phase of hepatic fibrosis and it was able to assess severity of liver disease in schistosomiasis.
Asunto(s)
Ácido Hialurónico/sangre , Cirrosis Hepática/sangre , Esquistosomiasis mansoni/sangre , Adulto , Biomarcadores , Femenino , Humanos , Masculino , Persona de Mediana Edad , Esquistosomiasis mansoni/clasificación , Índice de Severidad de la Enfermedad , alfa-Macroglobulinas/metabolismoRESUMEN
Extracellular matrix proteoglycans (PGs) and glycosaminoglycans (GAGs) play a crucial role in cell differentiation and synaptogenesis by modulating neurite outgrowth. The chondroitin sulfate (CS)-rich PG, the receptor protein tyrosine phosphatase zeta/beta (RPTP zeta/beta), has been related to neural morphogenesis and axon guidance. Hippocampal sclerosis is the most frequent pathologic finding in patients with intractable mesial temporal lobe epilepsy (MTLE), which is associated with neuron loss, reactive gliosis, and mossy fiber sprouting. In the present study, we investigated the concentration of CS, heparan sulfate (HS) and hyaluronic acid (HA) in the hippocampus and temporal neocortex as well as RPTP zeta/beta expression in the hippocampus of patients with MTLE. Compared to autopsy control tissue, epileptic hippocampi showed a significantly increased concentration of CS (224%; p=0.0109) and HA (146%; p=0.039). HS was instead similar to control values. No differences were found in the concentration of CS, HS, or HA in the temporal neocortex of epileptic patients when compared to control values. In contrast, RPTP zeta/beta immunoreactivity was induced in astrocytes of the inner molecular layer of the dentate gyrus of the sclerotic hippocampus. Because matrix compounds have been associated with tissue injury and repair, the present findings suggest that changes in PGs and GAGs might be related to damage-induced gliosis and neuronal reorganization in the hippocampus of MTLE patients.
Asunto(s)
Epilepsia del Lóbulo Temporal/metabolismo , Glicosaminoglicanos/metabolismo , Hipocampo/metabolismo , Proteoglicanos/biosíntesis , Adulto , Corteza Cerebral/metabolismo , Corteza Cerebral/patología , Sulfatos de Condroitina/metabolismo , Epilepsia del Lóbulo Temporal/patología , Heparitina Sulfato/metabolismo , Hipocampo/patología , Humanos , Ácido Hialurónico/metabolismo , Proteínas del Tejido Nervioso/biosíntesis , Proteínas Tirosina Fosfatasas/biosíntesis , Proteínas Tirosina Fosfatasas Clase 5 Similares a Receptores , EsclerosisRESUMEN
PURPOSE: This work studied the profile of glycosaminoglycans (GAGs) in the hippocampus, cortex, and cerebrospinal fluid of patients with temporal lobe epilepsy (TLE). METHODS: The GAGs were analyzed by agarose gel electrophoresis, enzymatic degradation, and enzyme-linked immunosorbent assay (ELISA). RESULTS: The hippocampus of TLE patients showed increased levels of chondroitin sulfate and hyaluronic acid against normal levels of these GAGs in the neocortex and cerebrospinal fluid (CSF). CONCLUSIONS: These results suggest that these matrix components could be involved in the pathophysiology of TLE.
Asunto(s)
Corteza Cerebral/metabolismo , Líquido Cefalorraquídeo/metabolismo , Epilepsia del Lóbulo Temporal/metabolismo , Matriz Extracelular/metabolismo , Glicosaminoglicanos/metabolismo , Hipocampo/metabolismo , Sulfatos de Condroitina/metabolismo , Heparitina Sulfato/metabolismo , Humanos , Ácido Hialurónico/metabolismoRESUMEN
OBJETIVO - Observar a distribuição das drogas em pacientes com doença arterial coronária (DAC) estável, em centros de atendimento (CA) primário e terciário. MÉTODOS - Foram analisados, 300 pacientes, consecutivos, no ambulatório do Grupo de Coronariopatias do INCOR com diagnóstico de DAC, idades entre 31 a 80 (58,5ñ8,0) anos, sendo 205 (68 por cento) do sexo masculino e 95 (32 por cento) do feminino e estudadas as características clínicas e hemodinâmicas. Avaliaram-se as drogas utilizadas, inicialmente, nos CA primários (comunitários) e, posteriormente, no CA terciário. RESULTADOS - As drogas mais utilizadas nos CA primários foram os ß-bloqueadores (50 por cento dos pacientes), nitratos (48 por cento), bloqueadores dos canais de cálcio (46 por cento), ácido acetil-salicílico (44 por cento), diuréticos (30 por cento) e os inibidores da enzima de conversão de angiotensina (ECA), em 11 'por cento' dos pacientes. No CA terciário as drogas mais utilizadas foram o ácido acetil-salicílico (76 por cento dos casos), nitratos (55 por cento), diuréticos (49 por cento), inibidores da ECA (42 por cento), os antagonistas dos canais de cálcio (37 por cento ) e os betabloqueadores (35 por cento dos pacientes). Os ß-bloqueadores foram mais prescritos em CA primário, p=0,02, já os inibidores da ECA, p<0,0001, o ácido acetil-salicílico, p<0,0001 e os diuréticos, p=0,002, foram mais prescritos no CA terciário. CONCLUSÄO - O tratamento farmacológico preconizado para a DAC estável deve ser otimizado em ambos os CA, dando prioridade às drogas que modificam a história natural da doença, como os betabloqueadores, antiagregantes plaquetários, e os inibidores da ECA nos pacientes com disfunção ventricular esquerda.