Strenuous Exercise Increases Plasmatic and Urinary Leukotriene E4 in Cyclists

2003 ◽  
Vol 28 (6) ◽  
pp. 793-806 ◽  
Author(s):  
Corinne Caillaud ◽  
Cyrille Le Creff ◽  
Patrick Legros ◽  
André Denjean
Keyword(s):  
Pulmonary Function ◽  
Pulmonary Function Tests ◽  
Blood Gases ◽  
Strenuous Exercise ◽  
Diffusion Capacity ◽  
Before And After ◽  
Significant Impairment ◽  
The Mean ◽  
Pulmonary Diffusion Capacity ◽  
Partial Oxygen

The purpose of this study was to investigate plasma and urinary levels of leukotriene (LT) and the changes in pulmonary function induced by strenuous exercise in highly trained cyclists (HT) with mild exercised-induced hypoxemia (EIH). Method: Nine HT and five untrained subjects (UT) performed a 30-min exercise at 78% of their [Formula: see text] Leukotriene E4 (LTE4) was assayed in plasma and urine. Pulmonary function tests and pulmonary diffusion capacity (DLCO) were examined before and after exercising. Ear arterialized blood gases were assessed at rest and during exercise. Results: The mean drop in partial oxygen pressure was 15 mmHg in HT during exercise; and the DLCO decreased by 7.5% following exercise. No significant changes were found in forced vital capacity or forced expiratory flows. LTE4 levels increased significantly in HT following exercise: urinary LTE4 was 42.9 ± 6.3 ng•mmol−1 creatinine at rest and 66.3 ± 11.9 ng•mmol−1 creatinine 2 hrs after exercise, and plasma LTE4 rose from 528 ± 91 pg•mL−1 at rest to 897 ± 123 pg•mL−1 after exercise. By contrast, urinary LTE4 level was unchanged in the UT group. Among the HT group, there was no significant correlation between urinary LTE4 changes and PO2, air flow rates, or DLCO changes. Conclusion: These results suggest that strenuous exercise induces an increase of LTE4 release in highly trained cyclists with mild EIH. These changes in LTE4 levels were not related to significant impairment of lung function. Key words: athletes, hypoxemia, pulmonary function, leukotrienes

scholarly journals Comparison of Per Cent Predicted and Percentile Values for Pulmonary Function Test Interpretation

2009 ◽  
Vol 16 (6) ◽  
pp. 189-193 ◽  
Author(s):  
Smita Pakhale ◽  
Zoheir Bshouty ◽  
Theodore K Marras
Keyword(s):  
Lung Function ◽  
Pulmonary Function ◽  
Pulmonary Function Tests ◽  
Residual Volume ◽  
European Respiratory Society ◽  
Diffusion Capacity ◽  
Percentile Method ◽  
Lung Capacity ◽  
Test Characteristics ◽  
The Mean

BACKGROUND: Pulmonary function tests (PFTs) are commonly interpreted as a fraction of predicted normal values, with an abnormal test often defined as less than 80% or greater than 120% of the predicted value. However, recommendations of the American Thoracic Society/European Respiratory Society suggest using a percentile-based approach to define an abnormal test (less than the fifth or greater than the 95th percentiles).OBJECTIVE: To compare PFT values obtained by the per cent predicted method with the percentile-based method for lung function parameters.METHODS: Full PFTs performed between January 2000 and July 2004, at the Health Sciences Centre (Winnipeg, Manitoba) were analyzed. Using the Crapo and Gutierrez equations, per cent predicted and percentile values were calculated. An abnormal test was defined as less than 80% or greater than 120% of predicted (per cent predicted method) or as less than the fifth or greater than the 95th percentiles (percentile method). Using the percentile method as reference standard, the diagnostic test characteristics of the per cent predicted method were calculated.RESULTS: The full PFTs of 2176 men and 1658 women were analyzed using the Crapo and Gutierrez equations. The mean (± SD) age of all subjects was 52±15 years. Per cent agreement between the two tests was more than 94% for all parameters except for reduced residual volume (88%). Per cent predicted methods had suboptimal sensitivity for abnormal total lung capacity (88% to 89%), increased residual volume (83% to 89%) and reduced diffusion capacity (89% with Crapo equations). Suboptimal specificity (83% to 86%) was observed for decreased residual volume.CONCLUSION: The results of the per cent predicted and percentile-based approaches for PFT interpretation were similar for the majority of lung function parameters. These two methods can be used interchangeably for spirometry. However, caution may be warranted in relying solely on per cent predicted methods for assessing lung volume or diffusion capacity.

ISOLATED ABNORMALITIES OF DIFFUSION CAPACITY (DLCO) IN PULMONARY FUNCTION TESTS AMONG INNER CITY PATIENTS

CHEST Journal ◽  
2008 ◽  
Vol 134 (4) ◽  
pp. 49S
Author(s):  
Ibrahim H. Abou Daya ◽  
Muhammad U. Anwer ◽  
Gilda Diaz-Fuentes ◽  
Steve Blum ◽  
Latha Menon
Keyword(s):  
Pulmonary Function ◽  
Inner City ◽  
Pulmonary Function Tests ◽  
Diffusion Capacity ◽  
Function Tests

scholarly journals Computed tomography findings as determinants of pulmonary function tests in fibrotic interstitial lung diseases—Network-analyses and multivariate models

2020 ◽  
Vol 17 ◽  
pp. 147997312096702
Author(s):  
David Lang ◽  
Kaveh Akbari ◽  
Stefan Walcherberger ◽  
Benedikt Hergan ◽  
Andreas Horner ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pulmonary Function ◽  
Pulmonary Function Tests ◽  
Information Criterion ◽  
Forced Expiratory Volume ◽  
Interstitial Lung Diseases ◽  
High Resolution Computed Tomography ◽  
Diffusion Capacity ◽  
Network Analyses ◽  
The Impact

The aim was to evaluate the impact of multiple high-resolution computed tomography (HRCT) features on pulmonary function test (PFT) biomarkers in fibrotic interstitial lung disease (FILD) patients. HRCT of subsequently ILD-board-discussed FILD patients were semi-quantitatively evaluated in a standardized approach: 18 distinct lung regions were scored for noduli, reticulation, honeycombing, consolidations, ground glass opacities (GGO), traction bronchiectasis (BRK) and emphysema. Total lung capacity (TLC), forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), FEV1/FVC, diffusion capacity for carbon monoxide (DLCO) and transfer coefficient (KCO) were assessed. Interactions between each PFT biomarker and all HRCT scores were visualized by network analyses, modeled according to the Schwarz Bayesian Information Criterion and incorporated in uni- and multivariate stepwise regression analyses. Among 108 FILD patients (mean age 67 years, 77% male), BRK extent was a major significant uni- or multivariate determinant of all PFT analyzed. Besides that, diffusion-based variables DLCO and KCO showed a larger dependency on reticulation, emphysema and GGO, while forced expiratory volume-based measures FEV1, FVC and FEV1/FVC were more closely associated with consolidations. For TLC, the only significant multivariate determinant was reticulation. In conclusion, PFT biomarkers derived from spirometry, body plethysmography and diffusion capacity in FILD patients are differentially influenced by semi-quantified HRCT findings.

Phase II trial of liposomal daunorubicin in the treatment of AIDS-related pulmonary Kaposi's sarcoma.

1998 ◽  
Vol 16 (10) ◽  
pp. 3369-3374 ◽  
Author(s):  
A Tulpule ◽  
R C Yung ◽  
J Wernz ◽  
B M Espina ◽  
A Myers ◽  
...  
Keyword(s):  
Kaposi's Sarcoma ◽  
Pulmonary Function Tests ◽  
Blood Gases ◽  
Kaposi’S Sarcoma ◽  
Liposomal Daunorubicin ◽  
Partial Resolution ◽  
Arterial Blood ◽  
Male Patients ◽  
The Mean ◽  
Cd4 Lymphocyte

PURPOSE Kaposi's sarcoma (KS) is the most common tumor in patients with AIDS and can be fatal in patients with lung involvement. Systemic chemotherapy is the most effective treatment for pulmonary KS. We thus conducted this study to determine the efficacy of liposomal daunorubicin in the treatment of patients with pulmonary KS. METHODS Patients with biopsy-proven, symptomatic pulmonary KS were accrued. Liposomal daunorubicin was given at a dose of 60 mg/m2 intravenously every 2 weeks. Response was monitored by chest radiographs, pulmonary function tests, arterial blood gases, and grading of pulmonary symptoms. RESULTS Fifty-three male patients were accrued. The median CD4+ lymphocyte count was 13/microL (range, 0 to 200); 70% reported a prior AIDS-defining opportunistic infection. All patients were symptomatic, with cough reported in all patients, shortness of breath in 94%, and hemoptysis in 55%. The mean study entry diffusing capacity of carbon monoxide (DLCO) was 58.5% (percent of predicted). The median dose of liposomal daunorubicin delivered was 360 mg/m2 (range, 60 to 1,380). More than 75% of patients had complete or partial resolution of baseline pulmonary symptoms. Complete or partial improvement in DLCO was observed in 22%; complete or partial resolution of radiographic abnormalities was reported in 32%. The most common treatment-related toxicity was neutropenia, which occurred in 85%. There were no instances of cardiac toxicity observed, even at high cumulative doses. CONCLUSION Liposomal daunorubicin at 60 mg/m2 is safe and active in patients with pulmonary KS. Trials combining liposomal daunorubicin with other active agents in KS should be considered.

Airway reactivity and lung function in triiodothyronine-induced thyrotoxicosis

1985 ◽  
Vol 58 (5) ◽  
pp. 1485-1488 ◽  
Author(s):  
R. S. Irwin ◽  
M. R. Pratter ◽  
D. H. Stivers ◽  
L. E. Braverman
Keyword(s):  
Lung Function ◽  
Pulmonary Function ◽  
Respiratory Symptoms ◽  
Pulmonary Function Tests ◽  
Forced Expiratory Volume ◽  
Base Line ◽  
Airway Reactivity ◽  
Percent Change ◽  
Serum T3 ◽  
The Mean

To evaluate the possible relationship between asthma and hyperthyroidism, airway reactivity and lung function were prospectively compared in healthy volunteers before, during, and after liothyronine (triiodothyronine, T3)-induced hyperthyroidism. Base-line evaluation of the 10 subjects included clinical evaluation, thyroid and pulmonary function tests, and airway reactivity assessed by methacholine inhalational challenge (MIC). All studies were normal. During T3-induced hyperthyroidism, no subject developed respiratory symptoms or changes in pulmonary function or airway reactivity. The mean percent change in forced expiratory volume at 1 s from base line (delta FEV1) of -2.4 +/- 3.0 after MIC was not significantly different from that obtained before T3 administration (-1.4 +/- 1.5, P greater than 0.2). When all serum T3 concentrations and delta FEV1 values before, during and after T3-induced hyperthyroidism were compared, there was no significant correlation. We conclude that T3-induced hyperthyroidism of 3-wk duration has no effect on airway reactivity or lung function in normal volunteers.

scholarly journals Evaluation of pulmonary function and respiratory symptoms in pyrochlore mine workers

2016 ◽  
Vol 42 (4) ◽  
pp. 279-285 ◽  
Author(s):  
Ritta de Cássia Canedo Oliveira Borges ◽  
José Cerqueira Barros Júnior ◽  
Fabrício Borges Oliveira ◽  
Marisa Andrade Brunherotti ◽  
Paulo Roberto Veiga Quemelo
Keyword(s):  
Occupational Exposure ◽  
Pulmonary Function ◽  
Respiratory Symptoms ◽  
Smoking Status ◽  
Pulmonary Function Tests ◽  
Cross Sectional ◽  
Mining Company ◽  
Production Sector ◽  
The Mean ◽  
Mine Workers

ABSTRACT Objective: To identify respiratory symptoms and evaluate lung function in mine workers. Methods: This was a cross-sectional observational study involving production sector workers of a pyrochlore mining company. The subjects completed the British Medical Research Council questionnaire, which is designed to evaluate respiratory symptoms, occupational exposure factors, and smoking status. In addition, they underwent pulmonary function tests with a portable spirometer. Results: The study involved 147 workers (all male). The mean age was 41.37 ± 8.71 years, and the mean duration of occupational exposure was 12.26 ± 7.09 years. We found that 33 (22.44%) of the workers had respiratory symptoms and that 26 (17.69%) showed abnormalities in the spirometry results. However, we found that the spirometry results did not correlate significantly with the presence of respiratory symptoms or with the duration of occupational exposure. Conclusions: The frequencies of respiratory symptoms and spirometric changes were low when compared with those reported in other studies involving occupational exposure to dust. No significant associations were observed between respiratory symptoms and spirometry results.

scholarly journals Observational study of omeprazole for gastroesophageal reflux on pulmonary function in adult asthmatics

2017 ◽  
Vol 9 (2) ◽  
pp. 139-145
Author(s):  
Nattapong Jaimchariyatam ◽  
Phurin Haprasert ◽  
Sutep Gonchanvit ◽  
Somkiat Wongtim
Keyword(s):  
Gastroesophageal Reflux ◽  
Pulmonary Function ◽  
Asthma Control ◽  
Pulmonary Function Tests ◽  
High Dose ◽  
Uncontrolled Asthma ◽  
Act Scores ◽  
Function Tests ◽  
The Mean ◽  
Act Score

Abstract Background Asthma is a chronic inflammatory disease of airways. Gastroesophageal reflux disease (GERD) is known to be associated with worsening asthma. We hypothesized that treatment of GERD in asthmatics will improve asthma control and quality of life. We reviewed our experience of treatment of GERD in asthmatics in Thailand. Objectives To study the effects of omeprazole for treatment of GERD in patients with poorly controlled asthma on pulmonary function tests and asthma control test (ACT) scores. Methods This study was conducted at King Chulalongkorn Memorial Hospital between August 2009 and December 2010. Patients with partly controlled and uncontrolled asthma who were found to have GERD by 24 hour esophageal pH monitoring were administered omeprazole 40 mg per day for 8 weeks. Pulmonary function tests and ACT scores before and after treatment were compared at 4-weeks and 8-weeks follow up. Results Twenty four patients were included in this study. None of them had asthmatic attacks during the study. After 4 and 8 weeks of omeprazole treatment, the mean FEV1 (2.20 ± 0.64 L, 2.36 ± 0.58 L, respectively) and the mean ACT score (20.82 ± 3.30, 23.00 ± 1.69, respectively) were significantly higher than the pretreatment values (mean FEV1 1.99 ± 0.56 L and ACT score 16.36 ± 3.97) (P < 0.05). Conclusion High-dose omeprazole may improve pulmonary function and the level of asthma control in Thai patients with partly controlled or uncontrolled asthma and coexisting GERD.

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