scholarly journals The Association between IgG and Disease Severity Parameters in CF Patients

2021 ◽  
Vol 10 (15) ◽  
pp. 3316
Author(s):  
Michal Gur ◽  
Yael Ben-David ◽  
Moneera Hanna ◽  
Anat Ilivitzki ◽  
Adi Weichhendler ◽  
...  
Keyword(s):  
Liver Disease ◽  
Disease Severity ◽  
Clinical Characteristics ◽  
Outcome Measure ◽  
Clinical Parameters ◽  
Lung Clearance ◽  
Pulmonary Functions ◽  
Stable Conditions ◽  
Lung Clearance Index ◽  
Auxiliary Test

Assessing disease severity in patients with cystic fibrosis (CF) is essential when directing therapies. Serum immunoglobulin G (IgG) levels increase with disease severity. Lung clearance index (LCI) is recognized as an outcome measure for CF clinical trials. Our aim was to evaluate the correlations between IgG and disease severity markers. This was a single-center retrospective study, evaluating association between IgG and markers of severity in CF patients (including clinical characteristics, lung spirometry, LCI, clinical scores and computed tomography (CT) scores) during stable conditions. There were 69 patients, age 20.5 ± 11.6 years. Nineteen (27.5%) patients had elevated IgG. IgG correlated positively with LCI (r = 0.342, p = 0.005). IgG was higher in pancreatic insufficient (PI) and patients with liver disease (1504.3 ± 625.5 vs. 1229 ± 276.1 mg/dL in PI vs. PS, p = 0.023, and 1702.6 ± 720.3 vs. 1256.2 ± 345.5 mg/dL with vs. without liver disease, p = 0.001, respectively). IgG also correlated positively with CRP, CT score, and days with antibiotics in the previous year (r = 0.38, p = 0.003; r = 0.435, p = 0.001; and r = 0.361, p = 0.002, respectively), and negatively with FEV1% and SK score (r = −0.527, p < 0.001 and r = −0.613, p < 0.001, respectively). IgG correlated with clinical parameters, pulmonary functions, and imaging. However, this is still an auxiliary test, complementing other tests, including lung function and imaging tests. Larger multi-center longitudinal studies are warranted.

scholarly journals Lung clearance index in CF: a sensitive marker of lung disease severity

Thorax ◽  
2007 ◽  
Vol 63 (2) ◽  
pp. 96-97 ◽  
Author(s):  
J. C Davies ◽  
S. Cunningham ◽  
E. W F W Alton ◽  
J A Innes
Keyword(s):  
Lung Disease ◽  
Disease Severity ◽  
Lung Clearance ◽  
Lung Clearance Index ◽  
Lung Disease Severity ◽  
Sensitive Marker

scholarly journals The quantitative link of lung clearance index to bronchial segments affected by bronchiectasis

Thorax ◽  
2017 ◽  
Vol 73 (1) ◽  
pp. 82-84 ◽  
Author(s):  
Sylvia Verbanck ◽  
Gregory G King ◽  
Wenxiao Zhou ◽  
Anne Miller ◽  
Cindy Thamrin ◽  
...  
Keyword(s):  
Cystic Fibrosis ◽  
Lung Disease ◽  
Disease Severity ◽  
Adult Patients ◽  
Lung Clearance ◽  
Lung Clearance Index ◽  
Ventilation Heterogeneity ◽  
Multiple Breath Washout ◽  
Lung Disease Severity

In adult patients with cystic fibrosis (CF), the lung clearance index (LCI) derived from the multiple breath washout relates to both acinar and conductive ventilation heterogeneity. The latter component predicts an association between LCI and the number of bronchial segments affected by bronchiectasis. Here, we experimentally demonstrated this association in patients with CF, and also examined an ancillary group of patients with non-CF bronchiectasis. We conclude that lung disease severity in terms of number of bronchial segments results in an associated LCI increase, likely constituting a portion of LCI that cannot be reversed by treatment in patients with CF lung disease.

Vitamin D levels are not associated with non-alcoholic fatty liver disease severity in a Brazilian population

2020 ◽  
pp. 1-8
Author(s):  
Jeniffer Danielle M. Dutra ◽  
Quelson Coelho Lisboa ◽  
Silvia Marinho Ferolla ◽  
Carolina Martinelli M. L. Carvalho ◽  
Camila Costa M. Mendes ◽  
...  
Keyword(s):  
Vitamin D ◽  
Liver Disease ◽  
Fatty Liver ◽  
Disease Severity ◽  
Fatty Liver Disease ◽  
Hypovitaminosis D ◽  
Alcoholic Fatty Liver ◽  
Vitamin D Levels ◽  
The Mean ◽  
Alcoholic Fatty Liver Disease

Abstract. Some epidemiological evidence suggests an inverse correlation between non-alcoholic fatty liver disease (NAFLD) frequency and vitamin D levels. Likewise, a beneficial effect of vitamin D on diabetes mellitus (DM) and insulin resistance has been observed, but this is an unsolved issue. Thus, we aimed to investigate the prevalence of hypovitaminosis D in a NAFLD Brazilian population and its association with disease severity and presence of comorbidities. In a cross-sectional study, the clinical, biochemical and histological parameters of 139 NAFLD patients were evaluated according to two different cut-off points of serum 25-hydroxyvitamin D levels (20 ng/mL and 30 ng/mL). The mean age of the population was 56 ± 16 years, most patients were female (83%), 72% had hypertension, 88% dyslipidemia, 46% DM, 98% central obesity, and 82% metabolic syndrome. Serum vitamin D levels were < 30 ng/mL in 78% of the patients, and < 20 ng/mL in 35%. The mean vitamin D level was 24.3 ± 6.8 ng/mL. The comparison between the clinical, biochemical and histological characteristics of the patients according to the levels of vitamin D showed no significant difference. Most patients with NAFLD had hypovitaminosis D, but low vitamin D levels were not related to disease severity and the presence of comorbidities.

Der Lung Clearance Index ist bei Patienten mit COPD erhöht

Pneumologie ◽  
2015 ◽  
Vol 69 (S 01) ◽  
Author(s):  
S Fähndrich ◽  
M Seibert ◽  
C Buess ◽  
PM Lepper ◽  
H Wilkens ◽  
...  
Keyword(s):  
Lung Clearance ◽  
Lung Clearance Index

The Relationship of Serum Hemojuvelin and Hepcidin Levels with Iron Overload in Nonalcoholic Fatty Liver Disease

2015 ◽  
Vol 24 (3) ◽  
pp. 293-300 ◽  
Author(s):  
Salih Boga ◽  
Huseyin Alkim ◽  
Canan Alkim ◽  
Ali Riza Koksal ◽  
Mehmet Bayram ◽  
...  
Keyword(s):  
Liver Disease ◽  
Iron Overload ◽  
Fatty Liver ◽  
Nonalcoholic Fatty Liver Disease ◽  
Fatty Liver Disease ◽  
Clinical Characteristics ◽  
Serum Levels ◽  
Fibrosis Stage ◽  
Enzyme Linked Immunosorbent Assay ◽  
Nonalcoholic Fatty Liver

Background & Aims: Mild iron overload is frequently reported in patients with nonalcoholic fatty liver disease (NAFLD). Hepcidin is the master iron-regulatory peptide and hemojuvelin (HJV) is the key regulator of iron-dependent secretion of hepcidin. The aims of this study were to evaluate serum HJV and hepcidin levels in patients with biopsy-proven NAFLD with and without hepatic iron overload, and to identify potential associations of HJV and hepcidin with the clinical characteristics of the patients enrolled. Methods: Serum levels of HJV and hepcidin were measured in 66 NAFLD patients with (n=12) and without (n=54) iron overload, and controls (n=35) by enzyme-linked immunosorbent assay. Hemojuvelin and hepcidin levels were assessed in relation to clinical characteristics and liver histologic evaluation of the participants. Results: Significantly lower serum HJV (281.1 [239.2-353.6] vs. 584.8 [440.3-661] ng/ml, p<0.001) and similar serum hepcidin levels (60.5±31.1 vs. 55.8±11.9 ng/ml, p=0.285) were found in NAFLD patients when compared to controls. İron-overloaded NAFLD patients had significantly lower HJV (249.9 [187.6-296.3] vs. 292.9 [243-435] ng/ml, p=0.032) and significantly higher hepcidin (78.4±35.5 vs. 56.5±28.9ng/ml, p=0.027) levels than NAFLD patients without iron overload. Fibrosis stage was significantly higher in iron overloaded NAFLD group (p<0.001). Ferritin levels correlated significantly both with HOMA-IR (r=0.368, p=0.002) and fibrosis stage (r=0.571, p<0.001). Conclusions: Our findings suggest that HJV levels are low in NAFLD and even lower in iron overloaded NAFLD, while hepcidin levels are higher in NAFLD with iron overload. The gradually decreased HJV and increased hepcidin concentrations in our patients most likely reflect the physiological response to iron accumulation in the liver.

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