FIND

researchers

DISCOVER

relevant articles

PROMOTE

your research

now for free

Wilhelm Stahl

Research Profile

Chemicals & Drugs

Anatomy

Procedures

High Pressure Liquid Chromatography

Phenomena

Ultraviolet Rays

Physiology

Disorders

Objects

Diet

Co-author Network

Publications

TOP 3
Wilhelm Stahl; Helmut Sies
β-Carotene and other carotenoids in protection from sunlight.
Claas Hundsdörfer; Thomas J J Müller; Wilhelm Stahl; Silke De Spirt
UVA photoprotective properties of an artificial carotenylflavonoid hybrid molecule.
Sarah Wagener; Tanja Völker; Silke De Spirt; Hansgeorg Ernst; Wilhelm Stahl
3,3'-Dihydroxyisorenieratene and isorenieratene prevent UV-induced DNA damage in human skin fibroblasts.

Register for free to view:

Visualized networks:

See your personal network in
sophisticated graphical views

GeoTargeted Searches:

Locate experts around the world
and connect with global collaborators

Research Profiles:

See the research activity
of experts around the globe

Geonetwork of Wilhelm Stahl (preview)

Cities where this author has publications
Cities where co-authors of this author have publications

Flash Player Required

All Publications

2012: Wilhelm Stahl; Helmut Sies
β-Carotene and other carotenoids in protection from sunlight.
The American journal of clinical nutrition 2012;96(5):1179S-84S.
2012: Claas Hundsdörfer; Thomas J J Müller; Wilhelm Stahl; Silke De Spirt
UVA photoprotective properties of an artificial carotenylflavonoid hybrid molecule.
Chemical research in toxicology 2012;25(8):1692-8.
2012: Sarah Wagener; Tanja Völker; Silke De Spirt; Hansgeorg Ernst; Wilhelm Stahl
3,3'-Dihydroxyisorenieratene and isorenieratene prevent UV-induced DNA damage in human skin fibroblasts.
Free radical biology & medicine 2012;53(3):457-63.
2012: Wilhelm Stahl; Helmut Sies
Photoprotection by dietary carotenoids: concept, mechanisms, evidence and future development.
Molecular nutrition & food research 2012;56(2):287-95.
2011: Tatjana Brossette; Claas Hundsdörfer; Klaus-Dietrich Kröncke; Helmut Sies; Wilhelm Stahl
Direct evidence that (-)-epicatechin increases nitric oxide levels in human endothelial cells.
European journal of nutrition 2011;50(7):595-9.
2011: Ulrike Heinrich; Carolyn E Moore; Silke De Spirt; Hagen Tronnier; Wilhelm Stahl
Green tea polyphenols provide photoprotection, increase microcirculation, and modulate skin properties of women.
The Journal of nutrition 2011;141(6):1202-8.
2011: Lirija Alili; Maren Sack; Ajay S Karakoti; Sarah Teuber; Katharina Puschmann; Suzanne M Hirst; Christopher M Reilly; Klaus Zanger; Wilhelm Stahl; Soumen Das; Sudipta Seal; Peter Brenneisen
Combined cytotoxic and anti-invasive properties of redox-active nanoparticles in tumor-stroma interactions.
Biomaterials 2011;32(11):2918-29.
2011: K Neukam; S De Spirt; Wilhelm Stahl; M Bejot; J-M Maurette; Hagen Tronnier; Ulrike Heinrich
Supplementation of flaxseed oil diminishes skin sensitivity and improves skin barrier function and condition.
Skin pharmacology and physiology 2011;24(2):67-74.
2010: Kaya Lutter; Silke De Spirt; Sebastian Kock; Klaus-Dietrich Kröncke; Hans-Dieter Martin; Tanja Wagener; Wilhelm Stahl
3,3'-Dihydroxyisorenieratene prevents UV-induced formation of reactive oxygen species and the release of protein-bound zinc ions in human skin fibroblasts.
Molecular nutrition & food research 2010;54(2):285-91.
2009: Christel M Marian; Sebastian C Kock; Claas Hundsdörfer; Hans D Martin; Wilhelm Stahl; Evgeny Ostroumov; Marc G Müller; Alfred R Holzwarth
Spectroscopic properties of phenolic and quinoid carotenoids: a combined theoretical and experimental study.
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2009;8(2):270-8.
2009: Silke De Spirt; Wilhelm Stahl; Hagen Tronnier; Helmut Sies; Marie Bejot; Jean-Marc Maurette; Ulrike Heinrich
Intervention with flaxseed and borage oil supplements modulates skin condition in women.
The British journal of nutrition 2009;101(3):440-5.
2009: M Cristina Polidori; Domenico Praticó; Francesca Mangialasche; Elena Mariani; Olivier Aust; Timur Anlasik; Ni Mang; Ludger Pientka; Wilhelm Stahl; Helmut Sies; Patrizia Mecocci; Gereon Nelles
High fruit and vegetable intake is positively correlated with antioxidant status and cognitive performance in healthy subjects.
Journal of Alzheimer's disease : JAD 2009;17(4):921-7.
2009: Maria Cristina Polidori; Juan-Carlos Carrillo; Pablo E Verde; Helmut Sies; Johannes Siegrist; Wilhelm Stahl
Plasma micronutrient status is improved after a 3-month dietary intervention with 5 daily portions of fruits and vegetables: implications for optimal antioxidant levels.
Nutrition journal 2009;8():10.
2009: Hans-Dieter Martin; Sebastian Kock; Roger Scherrers; Kaya Lutter; Tanja Wagener; Claas Hundsdörfer; Susanne Frixel; Klaus Schaper; Hansgeorg Ernst; Wolfgang Schrader; Helmut Görner; Wilhelm Stahl
3,3'-Dihydroxyisorenieratene, a natural carotenoid with superior antioxidant and photoprotective properties.
Angewandte Chemie (International ed. in English) 2009;48(2):400-3.
2007: Wilhelm Stahl; Helmut Sies
Carotenoids and flavonoids contribute to nutritional protection against skin damage from sunlight.
Molecular biotechnology 2007;37(1):26-30.
2007: M Cristina Polidori; Domenico Praticó; Basso Parente; Elena Mariani; Roberta Cecchetti; Yuemang Yao; Helmut Sies; Piergiorgio Cao; Patrizia Mecocci; Wilhelm Stahl
Elevated lipid peroxidation biomarkers and low antioxidant status in atherosclerotic patients with increased carotid or iliofemoral intima media thickness.
Journal of investigative medicine : the official publication of the American Federation for Clinical Research 2007;55(4):163-7.
2007: Karin Neukam; Wilhelm Stahl; Hagen Tronnier; Helmut Sies; Ulrike Heinrich
Consumption of flavanol-rich cocoa acutely increases microcirculation in human skin.
European journal of nutrition 2007;46(1):53-6.
2007: Francesco Galli; Wilhelm Stahl; Patrizia Mecocci; M Cristina Polidori; Frank Kelly
Vitamin E biotransformation in humans.
Vitamins and hormones 2007;76():263-80.
2006: Ulrike Heinrich; Karin Neukam; Hagen Tronnier; Helmut Sies; Wilhelm Stahl
Long-term ingestion of high flavanol cocoa provides photoprotection against UV-induced erythema and improves skin condition in women.
The Journal of nutrition 2006;136(6):1565-9.
2006: Jean Krutmann; Wilhelm Stahl
[Functional food for the skin].
Der Hautarzt; Zeitschrift für Dermatologie, Venerologie, und verwandte Gebiete 2006;57(4):280.
2006: Wilhelm Stahl; Jean Krutmann
[Systemic photoprotection through carotenoids].
Der Hautarzt; Zeitschrift für Dermatologie, Venerologie, und verwandte Gebiete 2006;57(4):281-5.
2006: Wilhelm Stahl; Ulrike Heinrich; Olivier Aust; Hagen Tronnier; Helmut Sies
Lycopene-rich products and dietary photoprotection.
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2006;5(2):238-42.
2006: Dario Maggio; M Cristina Polidori; Mauro Barabani; Angela Tufi; Carmelinda Ruggiero; Roberta Cecchetti; Maria Cristina Aisa; Wilhelm Stahl; Antonio Cherubini
Low levels of carotenoids and retinol in involutional osteoporosis.
Bone 2006;38(2):244-8.
2006: Ulrike Heinrich; Hagen Tronnier; Wilhelm Stahl; M Béjot; J-M Maurette
Antioxidant supplements improve parameters related to skin structure in humans.
Skin pharmacology and physiology 2006;19(4):224-31.
2005: Timur Anlasik; Helmut Sies; Helen R Griffiths; Patrizia Mecocci; Wilhelm Stahl; M Cristina Polidori
Dietary habits are major determinants of the plasma antioxidant status in healthy elderly subjects.
The British journal of nutrition 2005;94(5):639-42.
2005: Felicitas Daubrawa; Helmut Sies; Wilhelm Stahl
Astaxanthin diminishes gap junctional intercellular communication in primary human fibroblasts.
The Journal of nutrition 2005;135(11):2507-11.
2005: Wilhelm Stahl; Helmut Sies
Bioactivity and protective effects of natural carotenoids.
Biochimica et biophysica acta 2005;1740(2):101-7.
2005: Helmut Sies; Wilhelm Stahl; Alex Sevanian
Nutritional, dietary and postprandial oxidative stress.
The Journal of nutrition 2005;135(5):969-72.
2005: M Cristina Polidori; Domenico Praticó; Tiziana Ingegni; Elena Mariani; Liana Spazzafumo; Paola Del Sindaco; Roberta Cecchetti; Yuemang Yao; Stefano Ricci; Antonio Cherubini; Wilhelm Stahl; Helmut Sies; Umberto Senin; Patrizia Mecocci
Effects of vitamin C and aspirin in ischemic stroke-related lipid peroxidation: results of the AVASAS (Aspirin Versus Ascorbic acid plus Aspirin in Stroke) Study.
BioFactors (Oxford, England) 2005;24(1-4):265-74.
2005: Olivier Aust; Wilhelm Stahl; Helmut Sies; Hagen Tronnier; Ulrike Heinrich
Supplementation with tomato-based products increases lycopene, phytofluene, and phytoene levels in human serum and protects against UV-light-induced erythema.
International journal for vitamin and nutrition research. Internationale Zeitschrift für Vitamin- und Ernährungsforschung. Journal international de vitaminologie et de nutrition 2005;75(1):54-60.
2005: Wilhelm Stahl
Macular carotenoids: lutein and zeaxanthin.
Developments in ophthalmology 2005;38():70-88.
2004: M Cristina Polidori; Domenico Praticó; Ketty Savino; Joshua Rokach; Wilhelm Stahl; Patrizia Mecocci
Increased F2 isoprostane plasma levels in patients with congestive heart failure are correlated with antioxidant status and disease severity.
Journal of cardiac failure 2004;10(4):334-8.
2004: Helmut Sies; Wilhelm Stahl
Carotenoids and UV protection.
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2004;3(8):749-52.
2004: M Cristina Polidori; Paola Mattioli; Sarah Aldred; Roberta Cecchetti; Wilhelm Stahl; Helen Griffiths; Umberto Senin; Helmut Sies; Patrizia Mecocci
Plasma antioxidant status, immunoglobulin g oxidation and lipid peroxidation in demented patients: relevance to Alzheimer disease and vascular dementia.
Dementia and geriatric cognitive disorders 2004;18(3-4):265-70.
2004: Helmut Sies; Wilhelm Stahl
Nutritional protection against skin damage from sunlight.
Annual review of nutrition 2004;24():173-200.
2003: Wilhelm Stahl; Helmut Sies
Antioxidant activity of carotenoids.
Molecular aspects of medicine 2003;24(6):345-51.
2003: Olivier Aust; Niloofar Ale-Agha; L Zhang; H Wollersen; Helmut Sies; Wilhelm Stahl
Lycopene oxidation product enhances gap junctional communication.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association 2003;41(10):1399-407.
2003: Alejandro Betancor-Fernández; Antonio Pérez-Gálvez; Helmut Sies; Wilhelm Stahl
Screening pharmaceutical preparations containing extracts of turmeric rhizome, artichoke leaf, devil's claw root and garlic or salmon oil for antioxidant capacity.
The Journal of pharmacy and pharmacology 2003;55(7):981-6.
2003: M Cristina Polidori; Patrizia Mecocci; Wilhelm Stahl; Helmut Sies
Cigarette smoking cessation increases plasma levels of several antioxidant micronutrients and improves resistance towards oxidative challenge.
The British journal of nutrition 2003;90(1):147-50.
2003: Antonio Pérez-Gálvez; Hans D Martin; Helmut Sies; Wilhelm Stahl
Incorporation of carotenoids from paprika oleoresin into human chylomicrons.
The British journal of nutrition 2003;89(6):787-93.
2003: Helmut Sies; Wilhelm Stahl
Non-nutritive bioactive constituents of plants: lycopene, lutein and zeaxanthin.
International journal for vitamin and nutrition research. Internationale Zeitschrift für Vitamin- und Ernährungsforschung. Journal international de vitaminologie et de nutrition 2003;73(2):95-100.
2003: Ulrike Heinrich; Christine Gärtner; Mathilde Wiebusch; Olaf Eichler; Helmut Sies; Hagen Tronnier; Wilhelm Stahl
Supplementation with beta-carotene or a similar amount of mixed carotenoids protects humans from UV-induced erythema.
The Journal of nutrition 2003;133(1):98-101.
2002: Wilhelm Stahl; Helmut Sies
Carotenoids and protection against solar UV radiation.
Skin pharmacology and applied skin physiology 2002;15(5):291-6.
2002: Alejandro Betancor-Fernandez; Helmut Sies; Wilhelm Stahl; M Cristina Polidori
In vitro antioxidant activity of 2,5,7,8-tetramethyl-2-(2'-carboxyethyl)-6-hydroxychroman (alpha-CEHC), a vitamin E metabolite.
Free radical research 2002;36(8):915-21.
2002: Niloofar Ale-Agha; Wilhelm Stahl; Helmut Sies
(-)-Epicatechin effects in rat liver epithelial cells: stimulation of gap junctional communication and counteraction of its loss due to the tumor promoter 12-O-tetradecanoylphorbol-13-acetate.
Biochemical pharmacology 2002;63(12):2145-9.
2002: Dragan Radosavac; Peter Graf; M Cristina Polidori; Helmut Sies; Wilhelm Stahl
Tocopherol metabolites 2, 5, 7, 8-tetramethyl-2-(2'-carboxyethyl)-6-hydroxychroman (alpha-CEHC) and 2, 7, 8-trimethyl-2-(2'-carboxyethyl)-6-hydroxychroman (gamma-CEHC) in human serum after a single dose of natural vitamin E.
European journal of nutrition 2002;41(3):119-24.
2002: Patrizia Mecocci; M Cristina Polidori; Antonio Cherubini; Tiziana Ingegni; Paola Mattioli; Marco Catani; Patrizia Rinaldi; Roberta Cecchetti; Wilhelm Stahl; Umberto Senin; M Flint Beal
Lymphocyte oxidative DNA damage and plasma antioxidants in Alzheimer disease.
Archives of neurology 2002;59(5):794-8.
2002: Olaf Eichler; Helmut Sies; Wilhelm Stahl
Divergent optimum levels of lycopene, beta-carotene and lutein protecting against UVB irradiation in human fibroblastst.
Photochemistry and photobiology 2002;75(5):503-6.
2002: M Cristina Polidori; Antonio Cherubini; Wilhelm Stahl; Umberto Senin; Helmut Sies; Patrizia Mecocci
Plasma carotenoid and malondialdehyde levels in ischemic stroke patients: relationship to early outcome.
Free radical research 2002;36(3):265-8.
2002: Wilhelm Stahl; Niloofar Ale-Agha; M Cristina Polidori
Non-antioxidant properties of carotenoids.
Biological chemistry 2002;383(3-4):553-8.
2002: Simon Alaluf; Ulrike Heinrich; Wilhelm Stahl; Hagen Tronnier; Sheila Wiseman
Dietary carotenoids contribute to normal human skin color and UV photosensitivity.
The Journal of nutrition 2002;132(3):399-403.
2002: Malcolm Jackson; Sergio Papa; Juan Bolaños; Richard Bruckdorfer; Harald Carlsen; Ruan M Elliott; Jacoba Flier; Helen R Griffiths; Simon J R Heales; Birgit Holst; Michele Lorusso; Elizabeth K Lund; Jan Øivind Moskaug; Ulrich Moser; Marco Di Paola; M Cristina Polidori; Anna Signorile; Wilhelm Stahl; José Viña-Ribes; Siân B Astley
Antioxidants, reactive oxygen and nitrogen species, gene induction and mitochondrial function.
Molecular aspects of medicine 2002;23(1-3):209-85.
2002: Wilhelm Stahl; Henk van den Berg; John Arthur; Aalt Bast; Jack Dainty; Richard Faulks; Christine Gärtner; Guido Haenen; Peter Hollman; Birgit Holst; Frank Kelly; M Cristina Polidori; Catherine Rice-Evans; Susan Southon; Ton van Vliet; José Viña-Ribes; Gary Williamson; Siân B Astley
Bioavailability and metabolism.
Molecular aspects of medicine 2002;23(1-3):39-100.
2002: M Cristina Polidori; Ketty Savino; Gianfranco Alunni; Michela Freddio; Umberto Senin; Helmut Sies; Wilhelm Stahl; Patrizia Mecocci
Plasma lipophilic antioxidants and malondialdehyde in congestive heart failure patients: relationship to disease severity.
Free radical biology & medicine 2002;32(2):148-52.
2001: K Lang; K Bolsen; Wilhelm Stahl; Thomas Ruzicka; Helmut Sies; Percy Lehmann; Clemens Fritsch
The 5-aminolevulinic acid-induced porphyrin biosynthesis in benign and malignant cells of the skin.
Journal of photochemistry and photobiology. B, Biology 2001;65(1):29-34.
2001: Olivier Aust; Helmut Sies; Wilhelm Stahl; M Cristina Polidori
Analysis of lipophilic antioxidants in human serum and tissues: tocopherols and carotenoids.
Journal of chromatography. A 2001;936(1-2):83-93.
2001: Duygu Onat; Wilhelm Stahl; Helmut Sies
Stimulation of gap junctional intercellular communication by thalidomide and thalidomide analogs in human fetal skin fibroblasts (HFFF2) and in rat liver epithelial cells (WB-F344).
Biochemical pharmacology 2001;62(8):1081-6.
2001: Anat Ben-Dor; A Nahum; Michael Danilenko; Yudit Giat; Wilhelm Stahl; Hans D Martin; T Emmerich; N Noy; Joseph Levy; Yoav Sharoni
Effects of acyclo-retinoic acid and lycopene on activation of the retinoic acid receptor and proliferation of mammary cancer cells.
Archives of biochemistry and biophysics 2001;391(2):295-302.
2001: A Junghans; Helmut Sies; Wilhelm Stahl
Macular pigments lutein and zeaxanthin as blue light filters studied in liposomes.
Archives of biochemistry and biophysics 2001;391(2):160-4.
2001: Wilhelm Stahl; Ulrike Heinrich; S Wiseman; Olaf Eichler; Helmut Sies; Hagen Tronnier
Dietary tomato paste protects against ultraviolet light-induced erythema in humans.
The Journal of nutrition 2001;131(5):1449-51.
2001: M Cristina Polidori; Wilhelm Stahl; Olaf Eichler; I Niestroj; Helmut Sies
Profiles of antioxidants in human plasma.
Free radical biology & medicine 2001;30(5):456-62.
2001: Wilhelm Stahl; Helmut Sies
Effects of carotenoids and retinoids on gap junctional communication.
BioFactors (Oxford, England) 2001;15(2-4):95-8.
2001: Daniela Bruch-Gerharz; Wilhelm Stahl; C D Gerharz; Mosaad Megahed; T Wingerath; Helmut Sies; T Ruzicka
Accumulation of the xanthophyll lutein in skin amyloid deposits of systemic amyloidosis (al type).
The Journal of investigative dermatology 2001;116(1):196-7.
2000: A Junghans; Helmut Sies; Wilhelm Stahl
Carotenoid-containing unilamellar liposomes loaded with glutathione: a model to study hydrophobic-hydrophilic antioxidant interaction.
Free radical research 2000;33(6):801-8.
2000: Patrizia Mecocci; M Cristina Polidori; Leonarda Troiano; Antonio Cherubini; Roberta Cecchetti; Gabriella Pini; M Straatman; D Monti; Wilhelm Stahl; Helmut Sies; Claudio Franceschi; Umberto Senin
Plasma antioxidants and longevity: a study on healthy centenarians.
Free radical biology & medicine 2000;28(8):1243-8.
2000: Wilhelm Stahl; Ulrike Heinrich; H Jungmann; Helmut Sies; Hagen Tronnier
Carotenoids and carotenoids plus vitamin E protect against ultraviolet light-induced erythema in humans.
The American journal of clinical nutrition 2000;71(3):795-8.
2000: Wilhelm Stahl; Ulrike Heinrich; H Jungmann; Hagen Tronnier; Helmut Sies
Carotenoids in human skin: noninvasive measurement and identification of dermal carotenoids and carotenol esters.
Methods in enzymology 2000;319():494-502.
2000: Wilhelm Stahl; Jutta von Laar; Hans D Martin; T Emmerich; Helmut Sies
Stimulation of gap junctional communication: comparison of acyclo-retinoic acid and lycopene.
Archives of biochemistry and biophysics 2000;373(1):271-4.
1999: Wilhelm Stahl; P Graf; R Brigelius-Flohé; W Wechter; Helmut Sies
Quantification of the alpha- and gamma-tocopherol metabolites 2,5,7, 8-tetramethyl-2-(2'-carboxyethyl)-6-hydroxychroman and 2,7, 8-trimethyl-2-(2'-carboxyethyl)-6-hydroxychroman in human serum.
Analytical biochemistry 1999;275(2):254-9.
1999: T Wingerath; D Kirsch; B Spengler; Wilhelm Stahl
Analysis of cyclic and acyclic analogs of retinol, retinoic acid, and retinal by laser desorption ionization-, matrix-assisted laser desorption ionization-mass spectrometry, and UV/Vis spectroscopy.
Analytical biochemistry 1999;272(2):232-42.
1999: V B Teicher; N Kucharski; Hans D Martin; P van der Saag; Helmut Sies; Wilhelm Stahl
Biological activities of Apo-canthaxanthinoic acids related to gap junctional communication.
Archives of biochemistry and biophysics 1999;365(1):150-5.
1999: Clemens Fritsch; Percy Lehmann; Wilhelm Stahl; Klaus W Schulte; E Blohm; K Lang; Helmut Sies; Thomas Ruzicka
Optimum porphyrin accumulation in epithelial skin tumours and psoriatic lesions after topical application of delta-aminolaevulinic acid.
British journal of cancer 1999;79(9-10):1603-8.
1998: AT Diplock; J L Charleux; G Crozier-Willi; F J Kok; Catherine Rice-Evans; M Roberfroid; Wilhelm Stahl; José Viña-Ribes
Functional food science and defence against reactive oxidative species.
The British journal of nutrition 1998;80 Suppl 1():S77-112.
1998: Clemens Fritsch; B Homey; Wilhelm Stahl; Percy Lehmann; Thomas Ruzicka; Helmut Sies
Preferential relative porphyrin enrichment in solar keratoses upon topical application of delta-aminolevulinic acid methylester.
Photochemistry and photobiology 1998;68(2):218-21.
1998: T Wingerath; Helmut Sies; Wilhelm Stahl
Xanthophyll esters in human skin.
Archives of biochemistry and biophysics 1998;355(2):271-4.
1998: Wilhelm Stahl; A Junghans; B de Boer; E S Driomina; K Briviba; Helmut Sies
Carotenoid mixtures protect multilamellar liposomes against oxidative damage: synergistic effects of lycopene and lutein.
FEBS letters 1998;427(2):305-8.
1998: Wilhelm Stahl; Ulrike Heinrich; H Jungmann; Jutta von Laar; M Schietzel; Helmut Sies; Hagen Tronnier
Increased dermal carotenoid levels assessed by noninvasive reflection spectrophotometry correlate with serum levels in women ingesting Betatene.
The Journal of nutrition 1998;128(5):903-7.
1998: A Stock; Helmut Sies; Wilhelm Stahl
Enhancement of gap junctional communication and connexin43 expression by thyroid hormones.
Biochemical pharmacology 1998;55(4):475-9.
1998: Wilhelm Stahl; Helmut Sies
The role of carotenoids and retinoids in gap junctional communication.
International journal for vitamin and nutrition research. Internationale Zeitschrift für Vitamin- und Ernährungsforschung. Journal international de vitaminologie et de nutrition 1998;68(6):354-9.
1997: A von Herbay; Wilhelm Stahl; C Niederau; Helmut Sies
Vitamin E improves the aminotransferase status of patients suffering from viral hepatitis C: a randomized, double-blind, placebo-controlled study.
Free radical research 1997;27(6):599-605.
1997: T Wingerath; D Kirsch; B Spengler; R Kaufmann; Wilhelm Stahl
High-performance liquid chromatography and laser desorption/ionization mass spectrometry of retinyl esters.
Analytical chemistry 1997;69(19):3855-60.
1997: Christine Gärtner; Wilhelm Stahl; Helmut Sies
Lycopene is more bioavailable from tomato paste than from fresh tomatoes.
The American journal of clinical nutrition 1997;66(1):116-22.
1997: S Nicolai; Helmut Sies; Wilhelm Stahl
Stimulation of gap junctional intercellular communication by thalidomide and thalidomide analogs in human skin fibroblasts.
Biochemical pharmacology 1997;53(10):1553-7.
1997: Helmut Sies; Wilhelm Stahl
Carotenoids and intercellular communication via gap junctions.
International journal for vitamin and nutrition research. Internationale Zeitschrift für Vitamin- und Ernährungsforschung. Journal international de vitaminologie et de nutrition 1997;67(5):364-7.
1997: Wilhelm Stahl; S Nicolai; K Briviba; M Hanusch; G Broszeit; M Peters; Hans D Martin; Helmut Sies
Biological activities of natural and synthetic carotenoids: induction of gap junctional communication and singlet oxygen quenching.
Carcinogenesis 1997;18(1):89-92.
1997: Clemens Fritsch; Christoph Abels; Alwin E Goetz; Wilhelm Stahl; K Bolsen; Thomas Ruzicka; G Goerz; Helmut Sies
Porphyrins preferentially accumulate in a melanoma following intravenous injection of 5-aminolevulinic acid.
Biological chemistry 1997;378(1):51-7.
1996: A von Herbay; Wilhelm Stahl; C Niederau; J von Laar; G Strohmeyer; Helmut Sies
Diminished plasma levels of vitamin E in patients with severe viral hepatitis.
Free radical research 1996;25(6):461-6.
1996: Wilhelm Stahl; Helmut Sies
Lycopene: a biologically important carotenoid for humans?
Archives of biochemistry and biophysics 1996;336(1):1-9.
1996: R Kaufmann; T Wingerath; D Kirsch; Wilhelm Stahl; Helmut Sies
Analysis of carotenoids and carotenol fatty acid esters by matrix-assisted laser desorption ionization (MALDI) and MALDI-post-source-decay mass spectrometry.
Analytical biochemistry 1996;238(2):117-28.
1996: A Clairmont; D Tessman; A Stock; S Nicolai; Wilhelm Stahl; Helmut Sies
Induction of gap junctional intercellular communication by vitamin D in human skin fibroblasts is dependent on the nuclear Induction of gap junctional intercellular communication by vitamin D in human skin fibroblasts is dependent on the nuclear vitamin D receptor.
Carcinogenesis 1996;17(6):1389-91.
1996: J von Laar; Wilhelm Stahl; K Bolsen; G Goerz; Helmut Sies
Beta-carotene serum levels in patients with erythropoietic protoporphyria on treatment with the synthetic all-trans isomer or a natural isomeric mixture of beta-carotene.
Journal of photochemistry and photobiology. B, Biology 1996;33(2):157-62.
1996: C Gärtner; Wilhelm Stahl; Helmut Sies
Preferential increase in chylomicron levels of the xanthophylls lutein and zeaxanthin compared to beta-carotene in the human.
International journal for vitamin and nutrition research. Internationale Zeitschrift für Vitamin- und Ernährungsforschung. Journal international de vitaminologie et de nutrition 1996;66(2):119-25.
1996: Wilhelm Stahl; M Hanusch; Helmut Sies
4-oxo-retinoic acid is generated from its precursor canthaxanthin and enhances gap junctional communication in 10T1/2 cells.
Advances in experimental medicine and biology 1996;387():121-8.
1995: T Wingerath; Wilhelm Stahl; Helmut Sies
beta-Cryptoxanthin selectively increases in human chylomicrons upon ingestion of tangerine concentrate rich in beta-cryptoxanthin esters.
Archives of biochemistry and biophysics 1995;324(2):385-90.
1995: Helmut Sies; Wilhelm Stahl
Vitamins E and C, beta-carotene, and other carotenoids as antioxidants.
The American journal of clinical nutrition 1995;62(6 Suppl):1315S-1321S.
1995: Wilhelm Stahl; W Schwarz; J von Laar; Helmut Sies
All-trans beta-carotene preferentially accumulates in human chylomicrons and very low density lipoproteins compared with the 9-cis geometrical isomer.
The Journal of nutrition 1995;125(8):2128-33.
1995: M Hanusch; Wilhelm Stahl; Wolfgang A Schulz; Helmut Sies
Induction of gap junctional communication by 4-oxoretinoic acid generated from its precursor canthaxanthin.
Archives of biochemistry and biophysics 1995;317(2):423-8.
1995: T Nikawa; Wolfgang A Schulz; Stieneke van den Brink; M Hanusch; P van der Saag; Wilhelm Stahl; Helmut Sies
Efficacy of all-trans-beta-carotene, canthaxanthin, and all-trans-, 9-cis-, and 4-oxoretinoic acids in inducing differentiation of an F9 embryonal carcinoma RAR beta-lacZ reporter cell line.
Archives of biochemistry and biophysics 1995;316(2):665-72.
1994: Wilhelm Stahl; S Nicolai; M Hanusch; Helmut Sies
Vitamin D influences gap junctional communication in C3H/10T 1/2 murine fibroblast cells.
FEBS letters 1994;352(1):1-3.
1994: Wilhelm Stahl; Helmut Sies
Separation of geometrical isomers of beta-carotene and lycopene.
Methods in enzymology 1994;234():388-400.
1993: Wilhelm Stahl; Helmut Sies
Physical quenching of singlet oxygen and cis-trans isomerization of carotenoids.
Annals of the New York Academy of Sciences 1993;691():10-9.
1993: M Oarada; Wilhelm Stahl; Helmut Sies
Cellular levels of all-trans-beta-carotene under the influence of 9-cis-beta-carotene in FU-5 rat hepatoma cells.
Biological chemistry Hoppe-Seyler 1993;374(12):1075-81.
1993: Wilhelm Stahl; W Schwarz; Helmut Sies
Human serum concentrations of all-trans beta- and alpha-carotene but not 9-cis beta-carotene increase upon ingestion of a natural isomer mixture obtained from Dunaliella salina (Betatene).
The Journal of nutrition 1993;123(5):847-51.
1993: Wilhelm Stahl; A R Sundquist; M Hanusch; W Schwarz; Helmut Sies
Separation of beta-carotene and lycopene geometrical isomers in biological samples.
Clinical chemistry 1993;39(5):810-4.
1993: A R Sundquist; M Hanusch; Wilhelm Stahl; Helmut Sies
Cis/trans isomerization of carotenoids by the triplet carbonyl source 3-hydroxymethyl-3,4,4-trimethyl-1,2-dioxetane.
Photochemistry and photobiology 1993;57(5):785-91.
1992: Wilhelm Stahl; Helmut Sies
Uptake of lycopene and its geometrical isomers is greater from heat-processed than from unprocessed tomato juice in humans.
The Journal of nutrition 1992;122(11):2161-6.
1992: Helmut Sies; Wilhelm Stahl; A R Sundquist
Antioxidant functions of vitamins. Vitamins E and C, beta-carotene, and other carotenoids.
Annals of the New York Academy of Sciences 1992;669():7-20.
1992: Wilhelm Stahl; W Schwarz; A R Sundquist; Helmut Sies
cis-trans isomers of lycopene and beta-carotene in human serum and tissues.
Archives of biochemistry and biophysics 1992;294(1):173-7.