Tissue-Specific Ultra-Short Telomeres in Chronic Obstructive Pulmonary Disease.

Purpose: Telomere biology, especially tissue-specific ultra-short telomeres, might provide a strong contribution to our current knowledge in COPD development as well as a predictive marker for prognosis. To test this hypothesis, we investigated telomere lengths in lung tissue and leukocytes in patients diagnosed with COPD. Patients and Methods: Thirty-two patients were included in the current study. All patients showed a post-bronchodilator ratio of less than 70% post-bronchodilator predicted value of forced expiratory volume in second (FEV1%), mean 56%; range [19% to 86%]. To be able to investigate ultra-short telomeres, universal single telomere length analysis (U-STELA) was used. Results: Our results showed a higher level of the ultra-short telomere presence in bronchoalveolar lavage (BAL) cells when compared to leukocytes with statistical significance t(62)=5.771, p<0.00001. The FEV1% was lower in subjects with ultra-short telomeres in BAL (50.6% vs 81.6%: p<0.001) and in ultra-short telomeres in blood leukocytes (37.3% vs 58.5%: p=0.051) when compared to subjects without ultra-short telomeres in leukocytes. Furthermore, the patients who had ultra-short telomeres in BAL samples were significantly older (p=0.014) than patients who did not have ultra-short telomeres. Ultra-short telomeres in BAL (p=0.05) but not in leukocytes (p=0.33) were associated with FEV1% in a regressions model adjusting for age (p<0.0001), ever smoking (p<0.0001) and sex (p=0.71). The patients with ultra-short telomeres were graded higher in the Global Initiative for Chronic Obstructive Lung Disease (GOLD) classification (p=0.006). Conclusion: This study emphasizes the need to investigate the correct tissue to get a representative evaluation of the stage or advancedness of COPD. To our knowledge, this is the first study to show that there is a correlation between the presence of ultra-short telomeres in lung tissue and COPD severity. Our results suggest that ultra-short telomeres are involved in the molecular pathogenesis of COPD and might be used as a tissue-specific predictive biomarker.

Applying Beers Criteria for Elderly Patients to Assess Rational Drug Use at a University Hospital in Northern Cyprus.

BACKGROUND: Several regulations for potentially inappropriate medications (PIMs) have been published specifically for elderly patients to rationalize drug use in such vulnerable communities. OBJECTIVES: To determine the proportion and characteristics of PIMs in patients receiving one or more drugs according to Beers Criteria 2015. MATERIALS AND METHODS: A cross-sectional prospective analysis of 451 inpatients admitted between September 25 and October 25, 2016, was conducted in Near East University Hospital, Northern Cyprus. Data were extracted from the patient medical records using special forms. RESULTS: A total of 119 elderly patients were identified (26.4%) and evaluated, of which 107 were eligible and 12 were excluded. Of the 1039 prescribed medicines, 16.9% were PIMs during hospitalization, whereas 12% were at discharge. The most prevalent PIM group during hospitalization was identified as the "medications to be avoided in older adults" (48.8%), whereas it also formed 52% of medications prescribed at discharge. PIMs of the class "drugs used with caution" formed 19.4% of prescribed medicine during hospitalization and 18.4% on discharge. The prevalence of polypharmacy was 79.4%, mainly identified as unpreventable polypharmacy of elders. CONCLUSION: A significantly higher prevalence of PIMs was observed in hospitalized patients than those discharged, with high prevalence of polypharmacy. These results necessitate a nationwide assessment, and responsible bodies who adopt strategies should act to reduce or overcome the aforementioned high prevalence in Northern Cyprus.