Correlation of neutrophil percentage-to-albumin ratio with lung function in American adults: a population study

Abstract Background Chronic respiratory diseases pose a significant threat to global health, underscoring the urgent need for effective preventative and therapeutic interventions. The neutrophil-to-albumin ratio (NPAR), an emerging biomarker for inflammation and nutritional status, has shown promisi...

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Main Authors: Xiaolin Zhang, Fan Bai, Haibin Ni, Shiyuan Chen, Dan Fu, Haiyan Ren, Bin Hu
Format: Article
Language:English
Published: BMC 2025-02-01
Series:BMC Pulmonary Medicine
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Online Access:https://doi.org/10.1186/s12890-025-03537-9
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author Xiaolin Zhang
Fan Bai
Haibin Ni
Shiyuan Chen
Dan Fu
Haiyan Ren
Bin Hu
author_facet Xiaolin Zhang
Fan Bai
Haibin Ni
Shiyuan Chen
Dan Fu
Haiyan Ren
Bin Hu
author_sort Xiaolin Zhang
collection DOAJ
description Abstract Background Chronic respiratory diseases pose a significant threat to global health, underscoring the urgent need for effective preventative and therapeutic interventions. The neutrophil-to-albumin ratio (NPAR), an emerging biomarker for inflammation and nutritional status, has shown promising associations with respiratory health, necessitating an investigation into its potential for predicting lung function decline. Objective This study aimed to delineate the relationship between the NPAR and pulmonary function within a sample of the American adult population and assess the viability of the NPAR as a prognostic indicator for compromised lung function. Methods With data available from the National Health and Nutrition Examination Survey (NHANES) for the years 2007 to 2012, 10,055 American adults who met the exclusion criteria were included in the current study. Multivariate linear regression, smoothed curve fitting, and subgroup analyses were applied to evaluate the associations observed between the NPAR and lung function indicators. Results Even after accounting for all potential confounding factors, a significant inverse relationship persisted between the NPAR and key lung function indicators, including forced expiratory volume in one second (FEV1), forced vital capacity (FVC), and peak expiratory flow rate (PEF). This association remained robust even after potential confounding factors were considered. Subgroup analysis revealed that the negative correlation was more pronounced in certain demographic groups, such as young individuals, males, and current smokers. The study also revealed an “N-shaped” relationship between the NPAR and fractional exhaled nitric oxide (FENO), suggesting that the NPAR may play a role in promoting airway inflammation. Conclusions A significant correlation between the NPAR and the decline in lung function among American adults was revealed in this research, emphasizing the potential clinical relevance of the NPAR as a respiratory health biomarker, as well as the importance of considering systemic inflammation in the management and prevention of respiratory disorders.
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spelling doaj-art-ccda3ad990594ce59daa07a7e2a8ce592025-08-20T03:11:07ZengBMCBMC Pulmonary Medicine1471-24662025-02-0125111110.1186/s12890-025-03537-9Correlation of neutrophil percentage-to-albumin ratio with lung function in American adults: a population studyXiaolin Zhang0Fan Bai1Haibin Ni2Shiyuan Chen3Dan Fu4Haiyan Ren5Bin Hu6Department of Geriatrics, Beilun District People’s Hospital, Beilun Branch of the First Affiliated Hospital, School of Medicine, Zhejiang UniversityDepartment of Geriatrics, Beilun District People’s Hospital, Beilun Branch of the First Affiliated Hospital, School of Medicine, Zhejiang UniversityDepartment of Geriatrics, Beilun District People’s Hospital, Beilun Branch of the First Affiliated Hospital, School of Medicine, Zhejiang UniversityDepartment of Geriatrics, Beilun District People’s Hospital, Beilun Branch of the First Affiliated Hospital, School of Medicine, Zhejiang UniversityDepartment of Geriatrics, Beilun District People’s Hospital, Beilun Branch of the First Affiliated Hospital, School of Medicine, Zhejiang UniversityDepartment of Geriatrics, Beilun District People’s Hospital, Beilun Branch of the First Affiliated Hospital, School of Medicine, Zhejiang UniversityDepartment of Geriatrics, Beilun District People’s Hospital, Beilun Branch of the First Affiliated Hospital, School of Medicine, Zhejiang UniversityAbstract Background Chronic respiratory diseases pose a significant threat to global health, underscoring the urgent need for effective preventative and therapeutic interventions. The neutrophil-to-albumin ratio (NPAR), an emerging biomarker for inflammation and nutritional status, has shown promising associations with respiratory health, necessitating an investigation into its potential for predicting lung function decline. Objective This study aimed to delineate the relationship between the NPAR and pulmonary function within a sample of the American adult population and assess the viability of the NPAR as a prognostic indicator for compromised lung function. Methods With data available from the National Health and Nutrition Examination Survey (NHANES) for the years 2007 to 2012, 10,055 American adults who met the exclusion criteria were included in the current study. Multivariate linear regression, smoothed curve fitting, and subgroup analyses were applied to evaluate the associations observed between the NPAR and lung function indicators. Results Even after accounting for all potential confounding factors, a significant inverse relationship persisted between the NPAR and key lung function indicators, including forced expiratory volume in one second (FEV1), forced vital capacity (FVC), and peak expiratory flow rate (PEF). This association remained robust even after potential confounding factors were considered. Subgroup analysis revealed that the negative correlation was more pronounced in certain demographic groups, such as young individuals, males, and current smokers. The study also revealed an “N-shaped” relationship between the NPAR and fractional exhaled nitric oxide (FENO), suggesting that the NPAR may play a role in promoting airway inflammation. Conclusions A significant correlation between the NPAR and the decline in lung function among American adults was revealed in this research, emphasizing the potential clinical relevance of the NPAR as a respiratory health biomarker, as well as the importance of considering systemic inflammation in the management and prevention of respiratory disorders.https://doi.org/10.1186/s12890-025-03537-9NPARLung functionBiomarkerChronic respiratory diseaseRespiratory health
spellingShingle Xiaolin Zhang
Fan Bai
Haibin Ni
Shiyuan Chen
Dan Fu
Haiyan Ren
Bin Hu
Correlation of neutrophil percentage-to-albumin ratio with lung function in American adults: a population study
BMC Pulmonary Medicine
NPAR
Lung function
Biomarker
Chronic respiratory disease
Respiratory health
title Correlation of neutrophil percentage-to-albumin ratio with lung function in American adults: a population study
title_full Correlation of neutrophil percentage-to-albumin ratio with lung function in American adults: a population study
title_fullStr Correlation of neutrophil percentage-to-albumin ratio with lung function in American adults: a population study
title_full_unstemmed Correlation of neutrophil percentage-to-albumin ratio with lung function in American adults: a population study
title_short Correlation of neutrophil percentage-to-albumin ratio with lung function in American adults: a population study
title_sort correlation of neutrophil percentage to albumin ratio with lung function in american adults a population study
topic NPAR
Lung function
Biomarker
Chronic respiratory disease
Respiratory health
url https://doi.org/10.1186/s12890-025-03537-9
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