Herbert Stepp
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Explore the profile of Herbert Stepp including associated specialties, affiliations and a list of published articles.
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87
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1381
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Recent Articles
11.
Lietke S, Schmutzer M, Schwartz C, Weller J, Siller S, Aumiller M, et al.
Cancers (Basel)
. 2021 Apr;
13(8).
PMID: 33917116
Interstitial photodynamic therapy (iPDT) using 5-aminolevulinic acid (5-ALA)-induced protoporphyrin IX (PpIX) as a cytotoxic photosensitizer could be a feasible treatment option for malignant gliomas. In a monocentric cohort of consecutive...
12.
Muller P, Abdel Gaber S, Zimmermann W, Wittig R, Stepp H
J Photochem Photobiol B
. 2020 Aug;
210:111963.
PMID: 32795847
Background: Photodynamic therapy with 5-aminolevulinic acid (5-ALA PDT) is a promising novel therapeutic approach in the therapy of malignant brain tumors. 5-ALA occurs as a natural precursor of protoporphyrin IX...
13.
Shi L, Pohla H, Buchner A, Zhang L, Pongratz T, Ruhm A, et al.
Photodiagnosis Photodyn Ther
. 2020 Jan;
30:101657.
PMID: 31945545
Background: Methadone, as a long-acting opioid analgesic, shows an ability to sensitize the treatment of ALA-PDT for glioblastoma cells (A172) in vitro by promoting apoptosis. However, the mechanisms how methadone...
14.
Heckl C, Aumiller M, Ruhm A, Sroka R, Stepp H
Photochem Photobiol
. 2019 Dec;
96(2):388-396.
PMID: 31886892
In interstitial photodynamic therapy, light is distributed to the tumor via light diffusers. The light dose and the related phototoxic effect achieved throughout the target volume critically depend on absorption,...
15.
Fullenbach C, Stein P, Glaser P, Triphaus C, Lindau S, Choorapoikayil S, et al.
Transfusion
. 2019 Nov;
60(1):62-72.
PMID: 31758575
Background: Approximately every third surgical patient is anemic. The most common form, iron deficiency anemia, results from persisting iron-deficient erythropoiesis (IDE). Zinc protoporphyrin (ZnPP) is a promising parameter for diagnosing...
16.
Lerchenberger M, Al Arabi N, Gallwas J, Stepp H, Hallfeldt K, Ladurner R
Int J Endocrinol
. 2019 Oct;
2019:4687951.
PMID: 31662746
Objective: To investigate the feasibility of near-infrared autofluorescence (AF) and indocyanine green (ICG) fluorescence to identify parathyroid glands intraoperatively. Methods: Fluorescence imaging was carried out during open parathyroid and thyroid...
17.
Lerchenberger M, Gundogar U, Al Arabi N, Gallwas J, Stepp H, Hallfeldt K, et al.
Surg Endosc
. 2019 Jul;
34(5):2050-2055.
PMID: 31342258
Background: Indocyanine green (ICG) fluorescence imaging represents an emerging technology that facilitates the assessment of tissue vascularity, tissue distinction, and tumor localization during surgery. The aim of this study was...
18.
Parathyroid Autofluorescence-How Does It Affect Parathyroid and Thyroid Surgery? A 5 Year Experience
Ladurner R, Lerchenberger M, Al Arabi N, Gallwas J, Stepp H, Hallfeldt K
Molecules
. 2019 Jul;
24(14).
PMID: 31337096
Injury to parathyroid glands during thyroid and parathyroid surgery is common and postoperative hypoparathyroidism represents a serious complication. Parathyroid glands possess a unique autofluorescence in the near-infrared spectrum which could...
19.
Shi L, Buchner A, Pohla H, Pongratz T, Ruhm A, Zimmermann W, et al.
J Biophotonics
. 2019 May;
12(10):e201800468.
PMID: 31140754
Although having shown promising clinical outcomes, the effectiveness of 5-aminolevulinic acid-based photodynamic therapy (ALA-PDT) for squamous cell carcinoma (SCC) and glioblastoma remains to be improved. The analgesic drug methadone is...
20.
Homann C, Hennig G, Maier F, Stepp H, Holdt L, Vogeser M, et al.
Pediatr Res
. 2019 Jan;
85(3):349-354.
PMID: 30655607
Background: Reliable screening for iron deficiency (ID) has required a blood sample and cost-intensive laboratory measurements. A novel method to non-invasively measure erythrocyte zinc protoporphyrin (ZnPP), an established marker for...