Asterios Tzinas

Dr. Asterios Tzinas

orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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31 August 2022 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
Athanasia PatakaAthanasia Pataka
Athanasia Pataka
Serafeim - Chrysovalantis KotoulasSerafeim - Chrysovalantis Kotoulas
Serafeim - Chrysovalantis Kotoulas
GKGeorge Kalamaras
George Kalamaras
ATAsterios Tzinas
Asterios Tzinas
IGIoanna Grigoriou
Ioanna Grigoriou
PAParaskevi Argyropoulou
Paraskevi Argyropoulou
The connection between smoking and Obstructive sleep apnea (OSA) is not yet clear. There are studies that have confirmed the effect of smoking on sleep disordered breathing, whereas others did not. Nicotine affects sleep, as smokers have prolonged total sleep and REM latency, reduced sleep efficiency, total sleep time, and slow wave sleep. Smoking cessation has been related with impaired sleep. The health consequences of cigarette smoking are well documented, but the effect of smoking cessation on OSA has not been extensively studied. Smoking cessation should improve OSA as upper airway oedema may reduce, but there is limited data to support this hypothesis. The impact of smoking cessation pharmacotherapy on OSA has been studied, especially for nicotine replacement therapy (NRT). However, there are limited data on other smoking cessation medications as bupropion, varenicline, nortriptyline, clonidine, and cytisine. The aim of this review was to explore the current evidence on the association between smoking and OSA, to evaluate if smoking cessation affects OSA, and to investigate the possible effects of different pharmacologic strategies offered for smoking cessation on OSA.

12 June 2021 in Medicina
Verified
Journal Article
Open access
PDF file
Athanasia PatakaAthanasia Pataka
Athanasia Pataka
Serafeim - Chrysovalantis KotoulasSerafeim - Chrysovalantis Kotoulas
Serafeim - Chrysovalantis Kotoulas
ESEmilia Stefanidou
Emilia Stefanidou
IGIoanna Grigoriou
Ioanna Grigoriou
ATAsterios Tzinas
Asterios Tzinas
PAParaskevi Argyropoulou
Paraskevi Argyropoulou
Background and Objectives The greatest challenge vaccines face is that of acceptance from the general population. Healthcare professionals’ (HCPs) recommendations have significant influence on general public vaccination behavior. The aim of this study was to assess the willingness of HCPs to get vaccinated against COVID-19, two weeks before initiation of vaccinations. Materials and Methods: We conducted an anonymous online survey from 11–15 December 2020 among HCPs by emails delivered from the local medical and nursing stuff associations. Results: The 71.1% of 656 HCPs intended to accept vaccination, 5.9% did not and 23% were still undecided. The acceptance rate was higher in physicians (76.5%) and significantly lower in nurses (48.3%). Most of the responders who intended to accept vaccination were males (p = 0.01), physicians (p = 0.001), older (p = 0.02), married (p = 0.054) with children (p = 0.001), and had treated patients with COVID-19 (p < 0.001). In the multivariate logistic regression, the predictors of HCPs willingness to get vaccinated were parenthood (OR = 4.19, p = 0.003), being a physician (OR = 2.79, p = 0.04), and treating confirmed/suspected COVID-19 patients (OR = 2.87, p = 0.036). Conclusions: Low vaccination acceptance rate was found especially in nurses, and as this may have a negative impact in the vaccination compliance of the general public, interventional educational programs to enhance vaccination are crucial.

26 July 2022 in Healthcare
Verified
Journal Article
Open access
PDF file
Athanasia PatakaAthanasia Pataka
Athanasia Pataka
Serafeim - Chrysovalantis KotoulasSerafeim - Chrysovalantis Kotoulas
Serafeim - Chrysovalantis Kotoulas
ATAsterios Tzinas
Asterios Tzinas
NKNectaria Kasnaki
Nectaria Kasnaki
ESEvdokia Sourla
Evdokia Sourla
PAParaskevi Argyropoulou
Paraskevi Argyropoulou
Background: During the recent pandemic, Healthcare Professionals (HCPs) presented a significant prevalence of psychological health problems and sleep disturbances. The aim of this study was to assess the impact of COVID-19 on HCPs’ sleep and mental stress with a separate analysis for primary care HCPs. Methods: A cross-sectional observational study with an online anonymized, self-reported questionnaire was conducted in May 2020 (1st wave) and repeated in December 2020 (2nd wave). Patient health questionnaire-4 (PHQ-4), dimensions of anger reactions-5 (DAR-5) scale, 3-item UCLA loneliness scale (LS) and sleep condition indicator (SCI) were used. Results: Overall, 574 participants were included from the 1st wave, 514 from the 2nd and 469 were followed during both. Anxiety and depression were significantly higher during the 2nd wave vs. the 1st (32.8% vs. 12.7%, p < 0.001 and 37.7% vs. 15.8%, p < 0.001). During the 2nd wave, HCPs scored significantly higher in DAR-5 (9.23 ± 3.82 vs. 7.3 ± 3.3, p < 0.001) and LS (5.88 ± 1.90 vs. 4.9 ± 1.9, p < 0.001) with worse sleep quality SCI (23.7 ± 6.6 vs. 25.4 ± 3.2, p < 0.001). This was more evident in primary care HCPs. Significant correlations were found between SCI and PHQ4, DAR5 and LS. Conclusion: There is a need to support HCPs’ mental health and sleep, especially in those working in primary care.

25 March 2026 in Diagnostics
Verified
Journal Article
Open access
PDF file
ATAsterios Tzinas
Asterios Tzinas
AKAliki Karkala
Aliki Karkala
Serafeim - Chrysovalantis KotoulasSerafeim - Chrysovalantis Kotoulas
Serafeim - Chrysovalantis Kotoulas
GKGeorge Kalamaras
George Kalamaras
EMEleni K. Mouloudi
Eleni K. Mouloudi
Athanasia PatakaAthanasia Pataka
Athanasia Pataka
Background: Obstructive sleep apnea (OSA) is a highly prevalent and heterogeneous sleep disorder. This study aimed to investigate age- and sex-specific phenotypes of OSA in a large clinical cohort, with special emphasis on the effects of aging and menopause on disease severity, hypoxemic component, symptom expression, comorbidities, and screening tool performance. Methods: A retrospective cross-sectional analysis was conducted on 3736 patients with confirmed OSA referred to a tertiary sleep clinic in Greece between 2013 and 2023. Participants were stratified by age and sex. Women were further classified as pre- and post-menopausal using age as a proxy. Clinical characteristics, comorbidities, questionnaire data and polysomnographic indices were analyzed using parametric and non-parametric statistical methods. Results: OSA severity peaked in middle age and remained high in older adults, while nocturnal hypoxemia and cardiometabolic comorbidities worsened with age. Women presented at an older age and with higher body mass index but lower Apnea Hypopnea Index (AHI) compared to men, yet experienced significantly longer hypoxemia and more severe insomnia. Women over 45 years exhibited a markedly more severe and hypoxic phenotype and substantially higher rates of comorbidities. Screening tool performance varied across subgroups: STOP-BANG was the most consistent, while symptom-based tools performed poorly in young women and elderly patients. Conclusions: OSA is a dynamic dependent disorder with distinct phenotypes across the lifespan. Current screening strategies fail to adequately capture these variations, particularly in women and older adults. A personalized, sex- and age-specific approach to OSA diagnosis and management is essential to reduce underdiagnosis and improve outcomes.

4 June 2025 in Diagnostics
Verified
Journal Article
Open access
PDF file
AKAliki Karkala
Aliki Karkala
Serafeim - Chrysovalantis KotoulasSerafeim - Chrysovalantis Kotoulas
Serafeim - Chrysovalantis Kotoulas
ATAsterios Tzinas
Asterios Tzinas
EMEleni Vasilios Massa
Eleni Vasilios Massa
EMEleni K. Mouloudi
Eleni K. Mouloudi
Athanasia PatakaAthanasia Pataka
Athanasia Pataka
Obstructive sleep apnea (OSA), a prevalent disorder characterized by recurrent upper airway collapse, is increasingly recognized as a systemic inflammatory condition influenced by microbial dysregulation. Emerging evidence underscores the lung microbiome as a mediator in OSA pathophysiology, where dysbiotic shifts driven by intermittent hypoxia, oxidative stress and mechanical airway trauma amplify inflammatory cascades and perpetuate respiratory instability. This review synthesizes current knowledge on the bidirectional interplay between OSA and lung microbial communities. It aims to highlight how hypoxia-induced alterations in microbial ecology disrupt immune homeostasis, while inflammation-driven mucosal injury fosters pathogenic colonization. Clinical correlations between specific taxa like Streptococcus and Prevotella, and disease severity, suggest microbial signatures as novel biomarkers for OSA progression and treatment response. Furthermore, oxidative stress markers and pro-inflammatory cytokines emerge as potential diagnostic tools that bridge microbial dysbiosis with sleep-related outcomes. However, challenges persist in sampling standardization of the low-biomass lower airways, as well as in causative mechanisms linking microbial dysbiosis to OSA pathophysiology. By integrating microbial ecology with precision sleep medicine, this paradigm shift promises to transform OSA management from mechanical stabilization to holistic ecosystem restoration.

8 December 2021 in Pneumon
Verified
Journal Article
Open access
ATAsterios Tzinas
Asterios Tzinas
EPEvangelia Panagiotidou
Evangelia Panagiotidou
ECEvangelos Chatzopoulos
Evangelos Chatzopoulos
AZAthanasios Zacharias
Athanasios Zacharias
ABAfroditi Boutou
Afroditi Boutou
GPGeorgia Pitsiou
Georgia Pitsiou
We present a case of anthracofibrosis with a challenging diagnostic approach, complicated with pulmonary embolism (PE). A coal exposed 71-year-old woman presented with acute respiratory failure. Lung cancer was suspected, as computed tomography (CT) findings included a mass. Apart from mild...