Endocrinal disturbances and systemic inflammatiom in chronic obstructive pulmonary disease (COPD)

Health assessment of sulfur mustard-chemical veterans with various respiratory diseases: The result of a comparative analysis of biological health scores (BHS) through 50 biomarkers

BACKGROUND

Mustard gas as a chemical weapon has been used in wars and its long-term side effects are substantial in the human body. This study aimed to apply an extension of allostatic load, known as biological health score (BHS), including the wear-and-tear of four physiological systems (endocrine, inflammatory, cardiovascular, and metabolic systems) to estimate biological health caused by sulfur mustard (SM) toxicity.

METHODS

In this cross-sectional study, serum samples were collected from two distinct groups of male individuals including 1) 236 individuals who had been exposed to SM gas during the Iraq-Iran war in 1987. This group was divided into three subgroups based on their respiratory disorders (19 individuals with asthma, 92 individuals with bronchiolitis obliterans, and 125 individuals with chronic bronchitis); 2) 64 healthy members, at the same range of age and residence, as the non-exposed group. To estimate a modified BHS, 50 blood-derived biomarkers (or their ratios) of the mentioned systems were measured.

RESULTS

The SM-exposed group and respiratory disease subgroups exhibited higher BHS than controls (P < 0.05). The endocrine and metabolic systems exhibited higher BHS in the SM-exposed group and its subgroups compared to the control group (P < 0.05). In contrast, the cardiovascular and immune/inflammatory systems did not show significant differences between the groups. Principal component analysis (PCA) identified several key biomarkers, including lymphocyte count, the LDH/lymphocyte ratio, cholesterol levels, and neutrophil count, as major contributors to interpatient variation among individuals exposed to SM and those with related respiratory diseases.

CONCLUSION

The modified multisystem BHS could be useful in the more accurate evaluation of biological health in chronic SM toxicity. The dysregulation observed in the endocrine and metabolic systems underscores the complication of SM toxicity and its extensive consequences on physiological homeostasis.

Sexual dysfunction in women with chronic obstructive lung disease

OBJECTIVE

To determine the prevalence of sexual dysfunction in women with COPD and the factors related to its presence.

METHODS

Cross-sectional observational study during 2021, including women with COPD diagnosed by spirometry through convenience sampling. Data on age, smoking status, spirometric data, comorbidities and medications used were collected. A sexual health questionnaire was administered.

RESULTS

The study included 101 women with a mean age of 59.7 (11.3) years. All had experienced a change in sexual activity, with 44% attributing it to COPD. Among them, 51.5% experienced dyspnea during coitus. The prevalence of sexual dysfunction was 52.5%. Women with sexual dysfunction were older and had a lower Tiffeneau index. Furthermore, they consumed alcohol more frequently and had hypertension and cerebrovascular disease, and less often, they had diabetes and heart failure. However, they scored lower on the Charlson index corrected for age. Patients with sexual dysfunction used inhaled triple therapy less frequently.

CONCLUSIONS

Sexual dysfunction is common in women with COPD. Further studies are needed to investigate its causes, mechanisms, and potential treatments.

A Systematic Review of Diagnostic Biomarkers of COPD Exacerbation

The aims of this systematic review were to determine which blood-based molecules have been evaluated as possible biomarkers to diagnose chronic obstructive pulmonary disease (COPD) exacerbations (AECOPD) and to ascertain the quality of these biomarker publications. Patients of interest were those that have been diagnosed with COPD. MEDLINE, EMBASE, and CINAHL databases were searched systematically through February 2015 for publications relating to AECOPD diagnostic biomarkers. We used a modified guideline for the REporting of tumor MARKer Studies (mREMARK) to assess study quality. Additional components of quality included the reporting of findings in a replication cohort and the use of receiver-operating characteristics area-under-the curve statistics in evaluating performance. 59 studies were included, in which the most studied biomarkers were C-reactive protein (CRP), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α). CRP showed consistent elevations in AECOPD compared to control subjects, while IL-6 and TNF-α had variable statistical significance and results. mREMARK scores ranged from 6 to 18 (median score of 13). 12 articles reported ROC analyses and only one study employed a replication cohort to confirm biomarker performance. Studies of AECOPD diagnostic biomarkers remain inconsistent in their reporting, with few studies employing ROC analyses and even fewer demonstrating replication in independent cohorts.