Yinon Shapira

Dr. Yinon Shapira

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Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

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

Representative Publications

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4 April 2013 in BMC Medicine
Verified
Journal Article
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ALAaron Lerner
Aaron Lerner
NANancy Agmon-Levin
Nancy Agmon-Levin
YSYinon Shapira
Yinon Shapira
BGBoris Gilburd
Boris Gilburd
SRSandra Reuter
Sandra Reuter
Yehuda ShoenfeldYehuda Shoenfeld
Yehuda Shoenfeld
Celiac disease is a life-long autoimmune condition, affecting genetically susceptible individuals that may present with thromboembolic phenomena. This thrombophilia represents a puzzle with multiple constituents: hyperhomocysteinemia, B12 and\or folate deficiency, methylenetetrahydrofolate reductase mutations, and protein C and S deficiency due to vitamin K deficiency. However, the well known thrombogenic factors, antiphosphatidylserine/prothrombin and antiprothrombin have never been explored in celiac disease.

16 August 2017 in British Journal of Ophthalmology
Verified
Journal Article
Closed access
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YSYinon Shapira
Yinon Shapira
YMYossy Machluf
Yossy Machluf
Michael MimouniMichael Mimouni
Michael Mimouni
YCYoram Chaiter
Yoram Chaiter
EMEedy Mezer
Eedy Mezer
Aims: To estimate the prevalence of amblyopia, present strabismus and amblyopia risk factors (ARFs) among young adults in Israel and to analyse trends over time of prevalence rates.Methods: We conducted a cross-sectional study including 107 608 pre-enlistees aged 17.4±0.6 years born between 1971 and 1994. Across the birth years, the following trends of prevalence rates among young adults were analysed: prevalence of amblyopia, prevalence of strabismus, severity of amblyopia and prevalence of ARFs (strabismsus, anisometropia and isoametropia). Unilateral amblyopia was defined as best corrected visual acuity (BCVA) of <0.67 (6/9) in either eye or as an interocular difference of two lines or more. Bilateral amblyopia was defined as BCVA of <0.67 (6/9) in both eyes. The severity of amblyopia was classified as mild (BCVA ≥0.5 [6/12]), moderate (BCVA <0.5 [6/12] and ≥0.25 [6/24]) or severe (BCVA <0.25 [6/24]).Results: The prevalence of young adulthood amblyopia declined by 33%, from 1.2% to 0.8% (R2=0.87, p<0.001) across 24 birth years. This decline may be due to a drop in unilateral amblyopia from 1% to 0.6% (R2=0.93, p<0.001), while the prevalence of bilateral amblyopia remained stable (0.2%, p=0.12). The decline in amblyopia was apparent in mild and moderate amblyopia, but not in severe amblyopia. Strabismus and anisometropia were detected in 6–12% and 11–20% of subjects with unilateral amblyopia, respectively, without significant trends. Strabismic amblyopia remained constant in the entire population across years. Isoametropia was detected in 46–59% of subjects with bilateral amblyopia without a significant trend across birth years. Prevalence of strabismus in the study population decreased by 50%, from 1.2% to 0.6% (R2=0.75, p<0.001). In subjects with present strabismus, the prevalence of mild unilateral amblyopia increased, while moderate or severe unilateral amblyopia remained relatively stable.Conclusion: Among young adults, the prevalence of unilateral amblyopia, as well as the prevalence of present strabismus, decreased significantly over a period of a generation. The prevalence of strabismic, bilateral or severe (both unilateral and bilateral) amblyopia remained stable. The establishment of the national screening programme for children and the improved utility of treatment for amblyopia and strabismus coincide with these trends. Thus, it is possible that these early interventions resulted in modification of the ‘natural history’ of these conditions and their prevalence in adolescence.

4 August 2012 in Rheumatology International
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Journal Article
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OEOri Elkayam
Ori Elkayam
DBDaniele Bendayan
Daniele Bendayan
RSRefael Segal
Refael Segal
YSYinon Shapira
Yinon Shapira
BGBoris Gilburd
Boris Gilburd
Yehuda ShoenfeldYehuda Shoenfeld
Yehuda Shoenfeld

26 October 2020 in Eye
Verified
Journal Article
Closed access
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YSYinon Shapira
Yinon Shapira
EWEmma Worrell
Emma Worrell
ALAndre S. Litwin
Andre S. Litwin
RMRaman Malhotra
Raman Malhotra

23 April 2022 in Graefe's Archive for Clinical and Experimental Ophthalmology
Verified
Journal Article
Open access
PDF file
YSYinon Shapira
Yinon Shapira
VJValerie Juniat
Valerie Juniat
CMCarmelo Macri
Carmelo Macri
DSDinesh Selva
Dinesh Selva
Purpose: To elucidate the role of syringing in assessing nasolacrimal duct (NLD) stenosis and non-anatomical functional NLD delay. Methods: Consecutive adult patients with epiphora attending a tertiary lacrimal clinic from June 2011 to March 2021 were reviewed. Cases with evidence of canalicular stenosis or other identifiable causes of epiphora were excluded. Following syringing, patients were investigated with dacryocystography (DCG) and dacryoscintigraphy (DSG). The sensitivity and specificity of syringing were evaluated using the combined findings on DCG and DSG. Results: A total of 289 symptomatic lacrimal systems (197 patients; mean age 65.5 ± 14.9 years, 66% females) were included. More than one-third of cases with both normal DCG and DSG were noted to have some degree of reflux on syringing (specificity = 65.1%, 95% CI 50.2–77.6%). The sensitivities were considerably low for NLD stenosis (i.e., stenosis on DCG and delay on DSG) and for functional NLD delay (i.e., normal DCG and delay on DSG), of which 43.7% (95% CI 32.2–55.9%) and 54.3% (95% CI 45.7–62.7%) had full patency on syringing, respectively (p = 0.17). Conclusions: Full patency on syringing was unreliable for ruling out NLD stenosis and functional delay. Furthermore, a positive syringing may be associated with functional NLD delay and cannot reliably differentiate it from stenosis.

15 October 2009 in International Journal of Social Psychiatry
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Journal Article
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AAAlex Aviv
Alex Aviv
GBGenadi Bromberg
Genadi Bromberg
YBYehuda Baruch
Yehuda Baruch
YSYinon Shapira
Yinon Shapira
DBDavid Blass
David Blass
Objective: The role of environmental factors in hospitalization of patients with schizophrenia is incompletely understood. This study attempts to relate the pattern of hospital admissions to environmental variables such as season and to social factors such as nationally celebrated holidays.