M C Meinke

Summary

Affiliation: Humboldt University
Country: Germany

Publications

  1. ncbi request reprint A novel device for the non-invasive measurement of free hemoglobin in blood bags
    M Meinke
    Charite Universitatsmedizin Berlin, Campus Benjamin Franklin, Institut für Medizinische Physik und Lasermedizin, Berlin
    Biomed Tech (Berl) 50:2-7. 2005
  2. doi request reprint Influence of dietary carotenoids on radical scavenging capacity of the skin and skin lipids
    M C Meinke
    Center of Experimental Applied Cutaneous Physiology, Department of Dermatology and Allergology, Charite Universitatsmedizin Berlin, Germany
    Eur J Pharm Biopharm 84:365-73. 2013
  3. doi request reprint In vivo photoprotective and anti-inflammatory effect of hyperforin is associated with high antioxidant activity in vitro and ex vivo
    Martina C Meinke
    Department of Dermatology, Venerology and Allergology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Eur J Pharm Biopharm 81:346-50. 2012
  4. doi request reprint Migration and penetration of a fluorescent textile dye into the skin--in vivo versus in vitro methods
    Martina Meinke
    Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology and Allergology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Exp Dermatol 18:789-92. 2009
  5. ncbi request reprint Empirical model functions to calculate hematocrit-dependent optical properties of human blood
    Martina Meinke
    Institut für Medizinische Physik and Lasermedizin, Campus Benjamin Franklin, Charite Universitatsmedizin, Berlin, Germany
    Appl Opt 46:1742-53. 2007
  6. ncbi request reprint Optical properties of platelets and blood plasma and their influence on the optical behavior of whole blood in the visible to near infrared wavelength range
    Martina Meinke
    Charite Universitatsmedizin Berlin, Campus Benjamin Franklin, Institut für Medizinische Physik und Lasermedizin, Fabeckstr 60 62, 14195 Berlin, Germany
    J Biomed Opt 12:014024. 2007
  7. ncbi request reprint Determination of oxygen saturation and hematocrit of flowing human blood using two different spectrally resolving sensors
    Martina Meinke
    Charite Universitatsmedizin Berlin, Campus Benjamin Franklin, CC6, Institut für Medizinische Physik und Lasermedizin, Berlin, Germany
    Biomed Tech (Berl) 51:347-54. 2006
  8. doi request reprint Two-wavelength carbon dioxide laser application for in-vitro blood glucose measurements
    Martina Meinke
    Charite Universitatsmedizin Berlin, Institut für Medizinische Physik und Lasermedizin, Berlin, Germany
    J Biomed Opt 13:014021. 2008
  9. doi request reprint Bioavailability of natural carotenoids in human skin compared to blood
    Martina C Meinke
    Charite Universitatsmedizin Berlin, Center of Experimental and Cutaneous Physiology, Berlin, Germany
    Eur J Pharm Biopharm 76:269-74. 2010
  10. doi request reprint Radical protection by sunscreens in the infrared spectral range
    Martina C Meinke
    Center of Experimental and Applied Cutaneous Physiology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Photochem Photobiol 87:452-6. 2011

Collaborators

Detail Information

Publications33

  1. ncbi request reprint A novel device for the non-invasive measurement of free hemoglobin in blood bags
    M Meinke
    Charite Universitatsmedizin Berlin, Campus Benjamin Franklin, Institut für Medizinische Physik und Lasermedizin, Berlin
    Biomed Tech (Berl) 50:2-7. 2005
    ..005 g/dL. These investigations show that in the future each blood bag can be tested non-invasively for its content of free hemoglobin. This will contribute to decreasing the wastage rate of red blood cell concentrates...
  2. doi request reprint Influence of dietary carotenoids on radical scavenging capacity of the skin and skin lipids
    M C Meinke
    Center of Experimental Applied Cutaneous Physiology, Department of Dermatology and Allergology, Charite Universitatsmedizin Berlin, Germany
    Eur J Pharm Biopharm 84:365-73. 2013
    ....
  3. doi request reprint In vivo photoprotective and anti-inflammatory effect of hyperforin is associated with high antioxidant activity in vitro and ex vivo
    Martina C Meinke
    Department of Dermatology, Venerology and Allergology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Eur J Pharm Biopharm 81:346-50. 2012
    ..Occlusive application of HP cream on non-irradiated test sites did not cause any skin irritation. Taken together, these results demonstrate that hyperforin is a powerful free radical scavenger...
  4. doi request reprint Migration and penetration of a fluorescent textile dye into the skin--in vivo versus in vitro methods
    Martina Meinke
    Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology and Allergology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Exp Dermatol 18:789-92. 2009
    ..The disadvantage of such textile extract applications on pig ear skin is discussed. It could be demonstrated that the absorption of the dye is strongly correlated to the amount of sweat, whereas the contact time was less important...
  5. ncbi request reprint Empirical model functions to calculate hematocrit-dependent optical properties of human blood
    Martina Meinke
    Institut für Medizinische Physik and Lasermedizin, Campus Benjamin Franklin, Charite Universitatsmedizin, Berlin, Germany
    Appl Opt 46:1742-53. 2007
    ..Changes in the optical properties when saline solution is replaced by blood plasma as the suspension medium were also investigated...
  6. ncbi request reprint Optical properties of platelets and blood plasma and their influence on the optical behavior of whole blood in the visible to near infrared wavelength range
    Martina Meinke
    Charite Universitatsmedizin Berlin, Campus Benjamin Franklin, Institut für Medizinische Physik und Lasermedizin, Fabeckstr 60 62, 14195 Berlin, Germany
    J Biomed Opt 12:014024. 2007
    ..However, substituting saline solution for plasma leads to a significant increase in the effective scattering coefficient and therefore should be taken into consideration...
  7. ncbi request reprint Determination of oxygen saturation and hematocrit of flowing human blood using two different spectrally resolving sensors
    Martina Meinke
    Charite Universitatsmedizin Berlin, Campus Benjamin Franklin, CC6, Institut für Medizinische Physik und Lasermedizin, Berlin, Germany
    Biomed Tech (Berl) 51:347-54. 2006
    ..Hematocrit determination could be improved using reflectance measurements in combination with transmission...
  8. doi request reprint Two-wavelength carbon dioxide laser application for in-vitro blood glucose measurements
    Martina Meinke
    Charite Universitatsmedizin Berlin, Institut für Medizinische Physik und Lasermedizin, Berlin, Germany
    J Biomed Opt 13:014021. 2008
    ..The CO2 laser measurement is too fast to be influenced by the red blood cell sedimentation, and will be a suitable method for glucose determination in whole blood...
  9. doi request reprint Bioavailability of natural carotenoids in human skin compared to blood
    Martina C Meinke
    Charite Universitatsmedizin Berlin, Center of Experimental and Cutaneous Physiology, Berlin, Germany
    Eur J Pharm Biopharm 76:269-74. 2010
    ..After supplementation had ended, the carotenoids decreased much faster in the blood than in the skin. The delayed decrease in the skin may indicate a peripheral buffer function of the skin for carotenoids...
  10. doi request reprint Radical protection by sunscreens in the infrared spectral range
    Martina C Meinke
    Center of Experimental and Applied Cutaneous Physiology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Photochem Photobiol 87:452-6. 2011
    ..The protection efficiency of the sunscreens was shown as being induced by the high scattering properties of the sunscreens, as well as the antioxidants contained in the formulations...
  11. doi request reprint Prevention of follicular penetration: barrier-enhancing formulations against the penetration of pollen allergens into hair follicles
    M C Meinke
    Center of Experimental and Applied Cutaneous Physiology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Skin Pharmacol Physiol 24:144-50. 2011
    ..It was shown that the barrier-enhancing formulations were able to significantly reduce the penetration of exogenous proteins into the hair follicles, the extent of such reduction depending on the formulation...
  12. doi request reprint Comparative study of carotenoids, catalase and radical formation in human and animal skin
    S F Haag
    Institut fur Pharmazie, Freie Universitat Berlin, Berlin, Germany
    Skin Pharmacol Physiol 23:306-12. 2010
    ..All skin types can be used for electron paramagnetic resonance-based detection of radicals, but porcine skin was found to be the most suitable type...
  13. doi request reprint Nanostructured lipid carriers as nitroxide depot system measured by electron paramagnetic resonance spectroscopy
    S F Haag
    Freie Universitat Berlin, Institut fur Pharmazie, Berlin, Germany
    Int J Pharm 421:364-9. 2011
    ..Moreover, stabilisation is also seen with data generated in vivo. Thus, same as invasomes NLCs are a suitable slow release depot system...
  14. doi request reprint Drug delivery with topically applied nanoparticles: science fiction or reality
    J Lademann
    Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Skin Pharmacol Physiol 26:227-33. 2013
    ..Once deposited at these structures, specific signals might trigger the release of the drugs and exert their effects on the target cells. In this article, examples of such triggered drug release are presented...
  15. doi request reprint In vivo methods for the analysis of the penetration of topically applied substances in and through the skin barrier
    J Lademann
    Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology CCP, Charite Universitatsmedizin Berlin, Chariteplatz 1, 10117 Berlin, Germany
    Int J Cosmet Sci 34:551-9. 2012
    ..The advantages and disadvantages of these methods will be discussed in this article...
  16. doi request reprint Uptake of antioxidants by natural nutrition and supplementation: pros and cons from the dermatological point of view
    J Lademann
    Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology and Allergology, Charite Universitatsmedizin Berlin, Germany
    Skin Pharmacol Physiol 24:269-73. 2011
    ..In addition, the skin, which also accumulates antioxidant substances, may profit from a sufficient antioxidative level, as damage induced by sun radiation in addition to skin aging is reduced...
  17. doi request reprint Photoprotective properties of the fluorescent europium complex in UV-irradiated skin
    O Vogt
    Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Charite, Universitatsmedizin Berlin, Berlin, Germany
    Skin Pharmacol Physiol 26:76-84. 2013
    ..The europium complex has proved to be an efficient UV filter with a low cyto- and phototoxic profile and therefore represents a potential candidate for use in sunscreen formulations...
  18. doi request reprint Safety assessment by multiphoton fluorescence/second harmonic generation/hyper-Rayleigh scattering tomography of ZnO nanoparticles used in cosmetic products
    M E Darvin
    Center of Experimental and Cutaneous Physiology CCP, Department of Dermatology, Venereology and Allergology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Skin Pharmacol Physiol 25:219-26. 2012
    ..Taking advantage of this sensitivity, it was clearly shown that ZnO NPs penetrate only into the outermost layers of stratum corneum, furrows and into the orifices of the hair follicles and do not reach the viable epidermis...
  19. ncbi request reprint Skin penetration enhancement of core-multishell nanotransporters and invasomes measured by electron paramagnetic resonance spectroscopy
    S F Haag
    Freie Universitat Berlin, Institut fur Pharmazie, Berlin, Germany
    Int J Pharm 416:223-8. 2011
    ..In conclusion novel polymer-based CMS nanotransporters and invasomes can favor the penetration of PCA or hydrophilic drugs. This offers possibilities for e.g. improved photodynamic therapy...
  20. doi request reprint Enhancement of skin radical scavenging activity and stratum corneum lipids after the application of a hyperforin-rich cream
    S F Haag
    Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology and Allergy, Charite Universitatsmedizin Berlin, Germany Electronic address
    Eur J Pharm Biopharm 86:227-33. 2014
    ..These results indicate that regular application of the hyperforin-rich cream can reduce radical formation and can stabilize skin lipids, which are responsible for the barrier function. ..
  21. ncbi request reprint Synergy effects between organic and inorganic UV filters in sunscreens
    J Lademann
    Medical Faculty Charité, Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, 10098 Berlin, Germany
    J Biomed Opt 10:14008. 2005
    ..In this way, more photons are absorbed, increasing the SPF. The results obtained are important for the optimization of the SPF of sunscreen formulation containing organic and inorganic UV-filter components...
  22. doi request reprint [How safe are nanoparticles?]
    J Lademann
    Center of Experimental and Applied Cutaneous Physiology, Klinik fur Dermatologie, Venerologie und Allergologie, Charite Universitatsmedizin Berlin, Chariteplatz 1, 10117 Berlin
    Hautarzt 60:305-9. 2009
    ..We discuss the perspectives and risks of the topical application of nanoparticles...
  23. doi request reprint Which skin model is the most appropriate for the investigation of topically applied substances into the hair follicles?
    J Lademann
    Center of Experimental and Applied Cutaneous Physiology CCP, Department of Dermatology and Allergology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Skin Pharmacol Physiol 23:47-52. 2010
    ....
  24. doi request reprint Penetration and storage of particles in human skin: perspectives and safety aspects
    J Lademann
    Department of Dermatology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Eur J Pharm Biopharm 77:465-8. 2011
    ..In the present review, the follicular penetration mechanisms and storage properties of particles are discussed...
  25. ncbi request reprint Cutaneous carotenoids: the mirror of lifestyle?
    J Lademann
    Centre of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venereology and Allergology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Skin Pharmacol Physiol 27:201. 2014
    ....
  26. ncbi request reprint Chemometric determination of blood parameters using visible-near-infrared spectra
    M Meinke
    Charite Universitatsmedizin Berlin, Campus Benjamin Franklin, Institut für Medizinische Physik und Lasermedizin, Germany
    Appl Spectrosc 59:826-35. 2005
    ..9% and 2.8%, respectively. Prediction of hemolysis was also possible for one blood sample with a PRMSE of 0.8% and keeping HCT and SatO2 stable with a PRMSE of 0.03%...
  27. ncbi request reprint Ultraviolet radiation and nanoparticle induced intracellular free radicals generation measured in human keratinocytes by electron paramagnetic resonance spectroscopy
    F Rancan
    Department of Dermatology and Allergy, Clinical Research Center for Hair and Skin Science, Charite Universitatsmedizin Berlin, Berlin, Germany
    Skin Res Technol 20:182-93. 2014
    ..Several nanoparticle-based formulations used in cosmetics and dermatology are exposed to sunlight once applied to the skin. Therefore, it is important to study possible synergistic effects of nanoparticles and ultraviolet radiation...
  28. doi request reprint Radical production by infrared A irradiation in human tissue
    M E Darvin
    Center of Applied Cutaneous Physiology CCP, Department of Dermatology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Skin Pharmacol Physiol 23:40-6. 2010
    ..Furthermore, it was shown in the present study that the side effect in the form of radical formation could be significantly reduced by increasing the protection system of the human organism in form of the antioxidant network...
  29. ncbi request reprint Influence of shear rate on the optical properties of human blood in the spectral range 250 to 1100 nm
    Moritz Friebel
    Laser und Medizin Technologie GmbH, Berlin, Fabeckstrasse 60 62, 14195 Berlin, Germany
    J Biomed Opt 12:054005. 2007
    ..It is possible to evaluate the influence of collective scattering phenomena, the absorption within the cell, and the cell shape...
  30. ncbi request reprint Determination of optical properties of human blood in the spectral range 250 to 1100 nm using Monte Carlo simulations with hematocrit-dependent effective scattering phase functions
    Moritz Friebel
    Laser und Medizin Technologie GmbH, Berlin, Germany
    J Biomed Opt 11:34021. 2006
    ..Moreover, the limitations of the Mie theory describing the optical properties of blood can be shown...
  31. ncbi request reprint Comparison of blood flow to the cutaneous temperature and redness after topical application of benzyl nicotinate
    Ute Jacobi
    Charité University Medizin Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Schumannstrasse 20 21, Berlin, Germany 10117
    J Biomed Opt 11:014025. 2006
    ..Cutaneous temperature and redness are unsuitable parameters to measure the kinetics of the blood flow after topical application of drugs...
  32. ncbi request reprint Determination of the complex refractive index of highly concentrated hemoglobin solutions using transmittance and reflectance measurements
    Moritz Friebel
    Laser und Medizin Technologie GmbH, Berlin, Fabeckstr 60 62, 14195 Berlin, Germany
    J Biomed Opt 10:064019. 2005
    ..02 units higher than the values found in the literature. The wavelength dependence of the measured data in the UV region differs from the calculated data using the Kramers-Kronig relation...
  33. ncbi request reprint Influence of nonhomogeneous distribution of topically applied UV filters on sun protection factors
    Jurgen Lademann
    Medical Faculty Charité, Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, 10098 Berlin, Germany
    J Biomed Opt 9:1358-62. 2004
    ..The direct correlation of homogeneity of distribution with the SPF opens up the possibility to increase the SPF by optimizing the formulation...