Panayiotis G. Vlachoyiannopoulos

Prof. Dr. Panayiotis G. Vlachoyiannopoulos

Medical School, National and Kapodistrian University of Athens, Laiko Hospital, 11527 Athens, Greece
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Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

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

Representative Publications

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1 December 2020 in Annals of the Rheumatic Diseases
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Journal Article
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Panayiotis G. VlachoyiannopoulosPanayiotis G. Vlachoyiannopoulos
Panayiotis G. Vlachoyiannopoulos
EMEleni Magira
Eleni Magira
HAHarry Alexopoulos
Harry Alexopoulos
EJEdison Jahaj
Edison Jahaj
KTKaterina Theophilopoulou
Katerina Theophilopoulou
ATAthanasios G. Tzioufas
Athanasios G. Tzioufas

1 May 2003 in Rheumatology
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Journal Article
Open access
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Panayiotis G. VlachoyiannopoulosPanayiotis G. Vlachoyiannopoulos
Panayiotis G. Vlachoyiannopoulos
PKP G Kanellopoulos
P G Kanellopoulos
JIJ P A Ioannidis
J P A Ioannidis
MTMaria G. Tektonidou
Maria G. Tektonidou
IMI Mastorakou
I Mastorakou
HMH M Moutsopoulos
H M Moutsopoulos
Objective. To evaluate whether premenopausal women with antiphospholipid syndrome (APS) or systemic lupus erythematosus (SLE) have increased prevalence of atherosclerosis after adjustment has been made for known cardiovascular risk factors. Methods. We evaluated premenopausal women with APS in comparison with age‐matched groups of patients with SLE [positive or negative for anticardiolipin (aCL) antibodies] or rheumatoid arthritis (RA), and healthy subjects. Thirty‐three subjects in each group were assessed for cardiovascular risk factors, including a detailed lipid profile. Ultrasonography of carotid and femoral arteries assessed the intima‐media thickness (IMT) and the presence of atherosclerotic plaque. Results. Atherosclerotic plaques were detected in 5, 2, 4, 1 and 1 subject in the five groups respectively. APS patients had significantly more affected vessels than RA patients and healthy controls (P=0.042 and P=0.016, respectively), but not compared with SLE patients. No consistent differences in IMT, traditional cardiovascular risk factors or lipid parameters were detected among the five groups. The odds for atherosclerosis independently increased 1.19‐fold per year of increasing age [95% confidence interval (CI) 1.08–1.31; P=0.001), 1.019‐fold per 1 mg/dl increase in low‐density lipoprotein (LDL) (95% CI 1.003–1.036; P=0.020), 1.035‐fold per additional 1 g of methylprednisolone equivalent cumulative corticosteroid dose (95% CI, 0.996–1.074; P=0.074), and 4.35‐fold in the presence of APS or SLE (95% CI 0.75–25.2; P=0.10). Neither aCL nor anti‐β2GPI antibodies were associated with atherosclerosis. Conclusion. Premenopausal APS and SLE women have an increased prevalence of carotid and femoral plaque that is not accounted for by other predictors of atherosclerosis, including age, lipid parameters and cumulative steroid dose.

13 March 2010 in Arthritis Research & Therapy
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Journal Article
Open access
VBVasiliki Kalliopi Bournia
Vasiliki Kalliopi Bournia
KDKonstantina D Diamanti
Konstantina D Diamanti
Panayiotis G. VlachoyiannopoulosPanayiotis G. Vlachoyiannopoulos
Panayiotis G. Vlachoyiannopoulos
HMHaralampos M. Moutsopoulos
Haralampos M. Moutsopoulos
Introduction: A subgroup of patients with primary Sjögren's Syndrome (SS) and positive anticentromere antibodies (ACA) were recognized as having features intermediate between SS and systemic sclerosis (SSc). Our goal was to describe this group clinically and serologically and define its tendency to evolve to full blown SSc. Methods: Among 535 patients with primary SS we identified 20 ACA positive (ACA+/SS). We compared them to 61 randomly selected ACA negative SS patients (ACA-/SS), 31 ACA positive SSc patients with sicca manifestations [SSc/(+) sicca] and 20 ACA positive SSc patients without sicca manifestations [SSc/(-) sicca]. Results: Prevalence of ACA among SS patients was 3.7%. Cases and controls did not differ in sex ratio and age at disease onset. ACA+/SS patients had a lower prevalence of dry eyes, hypergammaglobulinaemia, anti-Ro and anti-La antibodies and a higher prevalence of Raynaud's phenomenon and dysphagia compared to ACA-/SS patients. They also had lower prevalence of telangiectasias, puffy fingers, sclerodactyly, Raynaud's phenomenon, digital ulcers and gastroesophageal reflux in comparison to both of the SSc subgroups and a lower prevalence of dyspnoea and lung fibrosis compared to the SSc/(+) sicca subgroup. Two patients originally having ACA+/SS evolved to full blown SSc. Four deaths occurred, all among SSc patients. Kaplan Meier analysis showed a significant difference between cases and controls in time from disease onset to development of gastroesophageal reflux, telangiectasias, digital ulcers, arthritis, puffy fingers, xerostomia, hypergammaglobulinaemia and dysphagia. Conclusions: ACA+/SS has a clinical phenotype intermediate between ACA-/SS and SSc and shows little tendency to evolve to SSc.

28 October 2021 in Journal of Autoimmunity
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Journal Article
Closed access
ATAthanasios G. Tzioufas
Athanasios G. Tzioufas
ABAthanasios-Dimitrios Bakasis
Athanasios-Dimitrios Bakasis
AGAndreas V. Goules
Andreas V. Goules
KBKleopatra Bitzogli
Kleopatra Bitzogli
ICIlir I. Cinoku
Ilir I. Cinoku
HMHaralampos M. Moutsopoulos
Haralampos M. Moutsopoulos

15 January 2012 in The Journal of Rheumatology
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Journal Article
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EGEleftheria P. Grika
Eleftheria P. Grika
PZPanayiotis D Ziakas
Panayiotis D Ziakas
EZElias Zintzaras
Elias Zintzaras
HMHaralampos M. Moutsopoulos
Haralampos M. Moutsopoulos
Panayiotis G. VlachoyiannopoulosPanayiotis G. Vlachoyiannopoulos
Panayiotis G. Vlachoyiannopoulos
Objective. To describe morbidity, organ damage, mortality, and cause of death in patients with antiphospholipid syndrome (APS). Methods. Descriptive analysis of 135 patients. Patients were clustered according to initial event: arterial thrombosis including stroke (AT; n = 46), venous thrombosis including pulmonary emboli (VT; n = 53), or pregnancy morbidity (PM; n = 36). Disease progression according to initial event and prevalence of organ damage was observed. Results. APS occurs among young individuals (mean age 33.3 ± 11.9 yrs). One-third of the patients have APS secondary to systemic lupus erythematosus (SLE) or SLE-like disease. A broad spectrum of clinical manifestations mark the disease onset even before diagnosis. The pattern of initial presentation is preserved with regard to second event; VT is followed by VT (84%), AT is followed by AT (95%), and PM is followed by PM (88.9%). The highest morbidity is attributed to neurologic damage. PM is more likely to be followed by a second event, yet is associated with less organ damage than AT and VT. After a mean followup of 7.55 years, 29% of patients experienced organ damage and 5 died, with Systemic Lupus International Collaborating Clinics score associated with increased mortality (HR 1.31, 95% CI 1.07–1.60, p = 0.01, per 1-unit increase); hematological malignancies occurred in 2 patients after a cumulative followup of 1020 person-years. Coexistent SLE adds significant damage in patients with APS. Conclusion. APS is a disease of young individuals, who experience increased morbidity. Neurologic damage is the most common cause of morbidity. AT at presentation as well as coexistent SLE are associated with poor outcome.

1 December 2015 in Journal of Autoimmunity
Verified
Journal Article
Closed access
MPMarkos D. Patsouras
Markos D. Patsouras
MSMarina P. Sikara
Marina P. Sikara
EGEleftheria P. Grika
Eleftheria P. Grika
HMHaralampos M. Moutsopoulos
Haralampos M. Moutsopoulos
ATAthanasios G. Tzioufas
Athanasios G. Tzioufas
Panayiotis G. VlachoyiannopoulosPanayiotis G. Vlachoyiannopoulos
Panayiotis G. Vlachoyiannopoulos