Mario Matthaei

Dr. Mario Matthaei


Research Focus & Metrics

Academic Career Length

17Years (2010-Present)

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

Representative Publications

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30 June 2016 in European Journal of Medical Research
Verified
Journal Article
Open access
PDF file
AHAhmed M. Hishmi
Ahmed M. Hishmi
KKKonrad R. Koch
Konrad R. Koch
MMMario Matthaei
Mario Matthaei
EBEdwin Bölke
Edwin Bölke
CCClaus Dr. Cursiefen
Claus Dr. Cursiefen
LHLudwig M. Heindl
Ludwig M. Heindl
Tarsoconjunctival flap advancement, or the Hughes procedure, is among the techniques of choice for reconstructing full-thickness lower eyelid defects so as to restore normal anatomy and function with the best possible cosmetic outcome. The purpose of this study is to report the outcome of a series of patients treated with a modified Hughes procedure following malignant tumor removal. This retrospective study included 45 consecutive cases of modified Hughes procedures performed between January 2013 and October 2015. During Hughes flap creation an incisional plane was chosen in all cases, which left Müller’s muscle attached to the superior tarsal margin, while disinserting the levator aponeurosis. All cases were grouped according to the horizontal length of the lower lid defect to be reconstructed, as well as to the type of anterior lamella reconstruction (free graft vs. inferiorly based advancement flap). Grouped data were compared for the rate of surgical success, defined as achievement of normal lid function and satisfactory cosmesis without needing further surgical interventions, and for the frequency of specific complications. Surgical success was achieved in 39 cases (87 %). The remaining cases required additional surgery for minor complications including lower-lid ectropion (4 %), pyogenic granuloma (4 %), or lower lid margin hypertrophy (2 %). Donor-site complications were not detected apart from one case of mild entropion with focal trichiasis. No case of premature flap rupture was seen. Neither the horizontal length of the lower lid defect (p = 0.489), nor the type of anterior lamella reconstruction (p = 0.349) significantly affected the surgical success. Particularly, there was no increased onset of lower-lid ectropion among patients receiving an advancement flap. The modified Hughes procedure remains a well-suited technique for reconstructing lower eyelid defects involving up to 100 % of the horizontal lid length. Leaving Müller’s muscle attached to the Hughes flap might prevent premature flap dehiscence without increasing the frequency of upper lid retractions in turn. Whether using a free skin graft or a skin-muscle advancement flap for anterior lamella reconstruction, seems to be insignificant for the functional-aesthetical outcome.

1 April 2015 in Investigative Ophthalmology & Visual Science
Verified
Journal Article
Closed access
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MMMario Matthaei
Mario Matthaei
JGJohannes Gillessen
Johannes Gillessen
PMPhilipp S. Muether
Philipp S. Muether
RHRobert Hoerster
Robert Hoerster
BBBjörn O. Bachmann
Björn O. Bachmann
LHLudwig M. Heindl
Ludwig M. Heindl
Purpose.: The present study aimed to analyze the expression of epithelial–mesenchymal transition (EMT)-related cytokines in the aqueous humor of phakic and pseudophakic Fuchs' endothelial corneal dystrophy (FECD) eyes and their correlation to FECD severity. Methods.: Aqueous humor samples from phakic FECD eyes (FECDph, n = 9), from pseudophakic FECD eyes more than 1 year after cataract surgery (FECDpsph, n = 13), and from cataract controls without FECD (Controlcat, n = 28) were obtained during Descemet membrane endothelial keratoplasty (DMEK) or cataract surgery. Expression of EMT-related cytokines (TGF-β1, TGF-β2, TGF-β3, MCP-1, BFGF, TNF-α, IL-1β) was measured using multiplex bead assay. Corneal central-to-peripheral thickness ratio at 3.5 mm from the center (CPTR3.5) was determined as an objective metric for FECD severity before surgery by slit-scanning pachymetry. Results.: Pseudophakic FECD eyes showed significantly elevated expression compared with Controlcat and FECDph eyes for TGF-β1 (P < 0.001, respectively), for TGF-β2 (P < 0.05, respectively), and MCP-1 (P < 0.001, respectively). Levels of TGF-β1 (r = 0.6116, P < 0.05) and MCP-1 (r = 0.5934, P < 0.05) were positively correlated with CPTR3.5. No differences in EMT-associated protein levels were detected comparing FECDph eyes and Controlcat eyes. Conclusions.: Simultaneous elevation of TGF-β1, TGF-β2, and MCP-1 concentrations in FECDpsph eyes confirms that cataract surgery leads to long-term alterations of the intraocular microenvironment. Positive correlation of increased aqueous TGF-β1 and MCP-1 levels with CPTR3.5 in pseudophakic FECD eyes suggests that changed cytokine levels may be involved in corneal decompensation after cataract surgery. Unchanged aqueous humor levels of EMT-related proteins analyzed in phakic FECD patients indicate that there is no primary role of these aqueous cytokines in FECD pathogenesis.

20 March 2020 in Acta Ophthalmologica
Verified
Journal Article
Open access
PDF file
SSSilvia Schrittenlocher
Silvia Schrittenlocher
SSSimona L. Schlereth
Simona L. Schlereth
SSSebastian Siebelmann
Sebastian Siebelmann
THTakahiko Hayashi
Takahiko Hayashi
MMMario Matthaei
Mario Matthaei
CCClaus Cursiefen
Claus Cursiefen
Purpose: To assess the long‐term outcome of Descemet membrane endothelial keratoplasty (DMEK) following failed penetrating keratoplasty (PK).Methods: Retrospective review of 1840 consecutive DMEK surgeries from the prospective Cologne DMEK database performed between 07/2011 and 08/2017 at the Department of Ophthalmology, University of Cologne.Results: Fifty‐two eyes received a DMEK surgery after failed PK. Main indications for initial PK were Fuchs endothelial corneal dystrophy (23.1%), keratoconus and herpetic keratitis (each 15.4%). Best‐corrected visual acuity (BCVA) at 3, 6 and 12 months was 0.72 ± 0.39 (n = 33), 0.56 ± 0.36 (n = 32) and 0.38 ± 0.28 (n = 23), respectively. Two‐ and 3‐year BCVA was 0.37 ± 0.21 (n = 21) and 0.32 ± 0.18 (n = 10). Mean improvement in visual outcome in logMAR lines was +4.3 ± 3.4 at 6 months, +5.0 ± 3.6 at 12 months, +6.0 ± 2.3 at 24 months and +5.4 ± 2.7 at 36 months, respectively. 59.6% received at least one rebubbling and 40.4% did not necessitate a rebubbling. Endothelial cell density (ECD)‐decrease at 6 months was 36% (n = 17), 37% at 12 months (n = 17), 40% at 2 years (n = 8) and 32% at 3 years (n = 2). 34.6% of transplants needed a regraft.Conclusion: Descemet membrane endothelial keratoplasty (DMEK) is a feasible treatment option after failed PK having a relatively good long‐term outcome.

1 February 2021 in American Journal of Ophthalmology
Verified
Journal Article
Closed access
AHAgathe Hribek
Agathe Hribek
TCThomas Clahsen
Thomas Clahsen
JHJens Horstmann
Jens Horstmann
SSSebastian Siebelmann
Sebastian Siebelmann
NLNiklas Loreck
Niklas Loreck
MMMario Matthaei
Mario Matthaei

1 May 2020 in American Journal of Ophthalmology
Verified
Journal Article
Closed access
NLNiklas Loreck
Niklas Loreck
WAWerner Adler
Werner Adler
SSSebastian Siebelmann
Sebastian Siebelmann
ARAlexander C. Rokohl
Alexander C. Rokohl
LHLudwig M. Heindl
Ludwig M. Heindl
MMMario Matthaei
Mario Matthaei

26 October 2018 in Der Ophthalmologe
Verified
Journal Article
Closed access
PDF file
MMMario Matthaei
Mario Matthaei
SSS. Schrittenlocher
S. Schrittenlocher
DHD. Hos
D. Hos
SSS. Siebelmann
S. Siebelmann
FBF. Bucher
F. Bucher
CCC. Cursiefen
C. Cursiefen