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12 February 2026

Research on Clinical Efficacy and Immunomodulatory Mechanisms of an Integrated Traditional Chinese and Western Medicine Approach for Treating Chronic Cough Based on the “Concurrent Treatment of Lung and Spleen” Theory

Weidong Zhou*
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1 Department of Respiratory and Critical Care Medicine, Zhejiang Chinese Medical University, Pingyang Hospital of Traditional Chinese Medicine, Wenzhou 325000, Zhejiang, China
AMCMR 2026 , 2(1), 49–62; https://doi.org/10.61369/AMCMR.202601006
© 2026 by the Author. Licensee Art and Technology, USA. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC BY-NC 4.0) ( https://creativecommons.org/licenses/by-nc/4.0/ )
Abstract

Objective: This study aims to explore the clinical efficacy of an integrated traditional Chinese and Western medicine approach for treating chronic cough based on the “concurrent treatment of lung and spleen” theory and to conduct an in-depth analysis of its immunomodulatory mechanisms, including the balance of T lymphocyte subsets, regulation of immunoglobulin levels, and associated molecular pathways. This research seeks to provide new insights and evidence-based foundations for the clinical treatment of chronic cough. Methods: A total of 120 patients with chronic cough who were treated in the hospital from January 2023 to June 2024 were selected and randomly divided into an observation group and a control group using a random number table method, with 60 patients in each group. The control group received standardized Western medical treatment (budesonide/formoterol powder inhaler combined with montelukast sodium tablets), while the observation group received traditional Chinese medicine syndrome differentiation treatment based on the “concurrent treatment of lung and spleen” theory (self-formulated Yiqi Jianpi Runfei Decoction with modifications) in addition to the control group’s treatment. Both groups were treated continuously for 8 weeks. The cough symptom scores, cough visual analog scale (VAS) scores, and quality of life scores (LCQ) were compared between the two groups before and after treatment. Peripheral blood immune indicators [CD3+, CD4+, CD8+, CD4+/CD8+, immunoglobulin G (IgG), immunoglobulin A (IgA), immunoglobulin M (IgM)] and levels of related cytokines (IL-4, IFN-γ, TNF-α) were measured before and after treatment. The clinical efficacy and incidence of adverse reactions were statistically analyzed, and subgroup analyses were conducted based on age and disease duration. Results: After 8 weeks of treatment, the overall effective rate in the observation group was 93.33% (56/60), significantly higher than that in the control group, which was 76.67% (46/60), with a statistically significant difference (P < 0.05). Subgroup analysis revealed that the observation group demonstrated superior therapeutic effects compared to the control group across different age and disease duration subgroups (P < 0.05). Both groups showed a significant reduction in cough symptom scores and cough VAS scores, along with a significant increase in LCQ scores compared to pre-treatment levels. Moreover, the magnitude of improvement in the observation group was superior to that in the control group, with statistically significant differences (P < 0.05). Peripheral blood levels of CD3+, CD4+, CD4+/CD8+, IgG, and IgA significantly increased in both groups, while CD8+ levels significantly decreased post-treatment. The observation group exhibited a greater degree of improvement in immune indicators compared to the control group, with statistically significant differences (P < 0.05). Additionally, the observation group showed a significant reduction in IL-4 and TNF-α levels and a significant increase in IFN-γ levels compared to pre-treatment, with statistically significant differences compared to the control group (P < 0.05). There was no statistically significant difference in the incidence of adverse reactions between the two groups (P > 0.05). Conclusion: The integrated traditional Chinese and Western medicine approach based on the “simultaneous treatment of lung and spleen” theory demonstrates definite clinical efficacy in treating chronic cough. It significantly improves cough symptoms and quality of life in patients across different subgroups. Its mechanism of action may be related to regulating immune function, balancing T lymphocyte subsets, modulating immunoglobulin levels, and regulating relevant cytokine pathways. With good safety, this approach is worthy of clinical promotion and application.

Keywords
Simultaneous treatment of the lung and spleen
Integrated traditional Chinese and Western medicine
Chronic cough
Clinical efficacy
Immunoregulation
T lymphocyte subsets
Immunoglobulin
Cytokines
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