Relevant bibliographies by topics / MELANIN PIGMENT

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'MELANIN PIGMENT'

Author: Grafiati
Published: 11 September 2023
Last updated: 25 July 2025

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Journal articles on the topic "MELANIN PIGMENT"

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Mokrzynski, Krystian, Mateusz Wojtala, Maciej Sulkowski, et al. "Photoreactive Properties of Melanin Obtained from Human Induced Pluripotent Stem Cell-Derived Melanocytes." International Journal of Molecular Sciences 26, no. 9 (2025): 4119. https://doi.org/10.3390/ijms26094119.

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Although melanin is viewed as a natural sunscreen that protects pigmented cells against the adverse effects of solar radiation, recent studies have demonstrated that, under certain conditions, the pigment can actually contribute to light-induced oxidative damage of the cells. However, the main issue with such studies is finding natural pigments without photooxidative modifications. Recently, melanin obtained from melanocytes, generated from human induced pluripotent stem cells (hiPSC-Mel), was suggested as a promising source of the pigment without significant photooxidation. Although different
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Dontsov, Alexander, and Mikhail Ostrovsky. "Retinal Pigment Epithelium Pigment Granules: Norms, Age Relations and Pathology." International Journal of Molecular Sciences 25, no. 7 (2024): 3609. http://dx.doi.org/10.3390/ijms25073609.

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The retinal pigment epithelium (RPE), which ensures the normal functioning of the neural retina, is a pigmented single-cell layer that separates the retina from the Bruch’s membrane and the choroid. There are three main types of pigment granules in the RPE cells of the human eye: lipofuscin granules (LG) containing the fluorescent “age pigment” lipofuscin, melanoprotein granules (melanosomes, melanolysosomes) containing the screening pigment melanin and complex melanolipofuscin granules (MLG) containing both types of pigments simultaneously—melanin and lipofuscin. This review examines the func
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Gulyamova, T., L. Abdulmyanova, A. Atakhanov, et al. "Isolation and Characterization of Melanin Pigments from Endophytic Aspergillus niger FF152S and Cladosporium sp. HT207." Acta Microbiologica Bulgarica 40, no. 4 (2024): 526–35. https://doi.org/10.59393/amb24400413.

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Data on endophytic fungi Aspergillus niger FF152S and Cladosporium sp. HT207 producing brown-black pigment are presented. The pigment was extracted from fungal biomass, purified, characterized, and identified. Physico-chemical characteristics showed solubility in alkali, discoloration in oxidizing agents, and insolubility in organic solvents and water. The melanin structure of the pigments isolated from both strains was confirmed by spectrophotometric analysis in the UV and IR spectra. Isolated melanins exhibited antioxidant properties by the three tests used, and the IC50 values of antioxidan
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Singh, Riya, Chirag Mittal, and Aparna Gunjal. "Application of Melanin Pigment from Actinobacteria in Textile Industry." Nepal Journal of Environmental Science 13, no. 1 (2025): 71–77. https://doi.org/10.3126/njes.v13i1.75856.

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Actinobacteria are known to produce pigments which has many industrial applications. Melanin is one of the pigments produced by many of the actinobacteria. In this paper, the application of melanin in textile industry is studied. The actinobacteria were isolated from the soil samples. The three isolates were shown to produce melanin which was identified to belong to the genus Streptomyces and Nocardia. Melanin pigment was extracted from actinobacteria using starch casein, tyrosine and oatmeal media. The production of the melanin pigment was checked on both solid agar and liquid media. The appl
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Youngchim, Sirida, Roderick J. Hay, and Andrew J. Hamilton. "Melanization of Penicillium marneffei in vitro and in vivo." Microbiology 151, no. 1 (2005): 291–99. http://dx.doi.org/10.1099/mic.0.27433-0.

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Melanins are found universally in nature and are implicated in the pathogenesis of several important human fungal pathogens. This study investigated whether the conidia and the yeast cells of the thermally dimorphic fungal pathogen Penicillium marneffei produce melanin or melanin-like compounds in vitro and during infection. Treatment of conidia with proteolytic enzymes, denaturant and concentrated hot acid yielded dark particles that were similar in size and shape to the conidia. A melanin-binding monoclonal antibody (mAb) labelled pigmented conidia, yeast cells and the isolated particles as
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Mokrzynski, Krystian, Shosuke Ito, Kazumasa Wakamatsu, Theodore G. Camenish, Tadeusz Sarna, and Michal Sarna. "Photoreactivity of Hair Melanin from Different Skin Phototypes—Contribution of Melanin Subunits to the Pigments Photoreactive Properties." International Journal of Molecular Sciences 22, no. 9 (2021): 4465. http://dx.doi.org/10.3390/ijms22094465.

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Photoreactivity of melanin has become a major focus of research due to the postulated involvement of the pigment in UVA-induced melanoma. However, most of the hitherto studies were carried out using synthetic melanin models. Thus, photoreactivity of natural melanins is yet to be systematically analyzed. Here, we examined the photoreactive properties of natural melanins isolated from hair samples obtained from donors of different skin phototypes (I, II, III, and V). X-band and W-band electron paramagnetic resonance (EPR) spectroscopy was used to examine the paramagnetic properties of the pigmen
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Kordjazi, Talayeh, Loredana Mariniello, Concetta Valeria Lucia Giosafatto, Raffaele Porta, and Odile Francesca Restaino. "Streptomycetes as Microbial Cell Factories for the Biotechnological Production of Melanin." International Journal of Molecular Sciences 25, no. 5 (2024): 3013. http://dx.doi.org/10.3390/ijms25053013.

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Melanins are complex, polymeric pigments with interesting properties like UV-light absorbance ability, metal ion chelation capacity, antimicrobial action, redox behaviors, and scavenging properties. Based on these characteristics, melanins might be applied in different industrial fields like food packaging, environmental bioremediation, and bioelectronic fields. The actual melanin manufacturing process is not environmentally friendly as it is based on extraction and purification from cuttlefish. Synthetic melanin is available on the market, but it is more expensive than animal-sourced pigment
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Nosanchuk, Joshua D., Beatriz L. Gómez, Sirida Youngchim, et al. "Histoplasma capsulatum Synthesizes Melanin-Like Pigments In Vitro and during Mammalian Infection." Infection and Immunity 70, no. 9 (2002): 5124–31. http://dx.doi.org/10.1128/iai.70.9.5124-5131.2002.

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ABSTRACT Melanin is made by several important pathogenic fungi and has been implicated in the pathogenesis of a number of fungal infections. This study investigated whether the thermally dimorphic fungal pathogen Histoplasma capsulatum var. capsulatum produced melanin or melanin-like compounds in vitro and during infection. Growth of H. capsulatum mycelia in chemically defined minimal medium produced pigmented conidia. Growth of H. capsulatum yeast in chemically defined minimal medium with l-3,4-dihydroxyphenylalanine (DOPA) or (-)-epinephrine produced pigmented cells. Treatment of the pigment
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Morris-Jones, Rachael, Sirida Youngchim, Beatriz L. Gomez, et al. "Synthesis of Melanin-Like Pigments by Sporothrix schenckii In Vitro and during Mammalian Infection." Infection and Immunity 71, no. 7 (2003): 4026–33. http://dx.doi.org/10.1128/iai.71.7.4026-4033.2003.

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ABSTRACT Melanin has been implicated in the pathogenesis of several important human fungal pathogens. Existing data suggest that the conidia of the dimorphic fungal pathogen Sporothrix schenckii produce melanin or melanin-like compounds; in this study we aimed to confirm this suggestion and to demonstrate in vitro and in vivo production of melanin by yeast cells. S. schenckii grown on Mycosel agar produced visibly pigmented conidia, although yeast cells grown in brain heart infusion and minimal medium broth appeared to be nonpigmented macroscopically. However, treatment of both conidia and yea
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Youngchim, Sirida, Soraya Pornsuwan, Joshua D. Nosanchuk, Wiyada Dankai, and Nongnuch Vanittanakom. "Melanogenesis in dermatophyte species in vitro and during infection." Microbiology 157, no. 8 (2011): 2348–56. http://dx.doi.org/10.1099/mic.0.047928-0.

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Dermatophytes are keratinophilic fungi that are the most common cause of fungal skin infections worldwide. Melanin has been isolated from several important human fungal pathogens, and the polymeric pigment is now recognized as an important virulence determinant. This study investigated whether dermatophytes, including Trichophyton rubrum, Trichophyton mentagrophytes, Epidermophyton floccosum and Microsporum gypseum, produce melanin or melanin-like compounds in vitro and during infection. Digestion of the pigmented microconidia and macroconidia of dermatophytes with proteolytic enzymes, denatur
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Dissertations / Theses on the topic "MELANIN PIGMENT"

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Coffey, Bethany N. "Melanin as an Oto-Protective Pigment in Two Fish Species: Poecilia Latipinna and Cyprinus Carpio ." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1403.

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Melanin is the dark pigment found in most organisms that gives color to the skin, hair, feathers, and eyes of vertebrates. While melanin is known to also be present in the stria vascularis of the mammalian cochlea, its function in the inner ear is still unknown. Some previous studies have indicated that melanin may serve to protect the mammalian ear from hearing loss. Minimal previous research on melanin within the inner ears of fishes has been conducted. In this study, the melanin levels in the inner ears of different color morphs of two fish species (Poecilia latipinna and Cyprinus carpio) w
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Glória, Thiago Henrique Ribeiro. "Efeito de α-MSH sobre a expressão gênica de rodopsina, tirosinase e do receptor de α-MSH, subtipo MC1R, em melanócito B16 de Mus musculus." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/41/41135/tde-08012013-151106/.

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A coloração dos vertebrados deve-se a presença de pigmentos, sintetizados e/ou armazenados em células denominadas células pigmentares cutâneas. A mudança de cor nos vertebrados é principalmente regulada por α-MSH e uma família de enzimas melanossômicas, que incluem tirosinase e as proteínas relacionadas à tirosinase 1 e 2 (TRP-1 e TRP-2, respectivamente). Sua ação está ligada à dispersão dos melanossomos ou síntese de melanina, processos que resultam em escurecimento do animal, enquanto a agregação ou inibição de síntese leva ao seu empalidecimento. Opsinas, como a melanopsina e a rodops
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Santos, Luciane Rogéria dos. "Expressão gênica de receptor de melatonina (Mel1) e melanopsinas (Opn4x e Opn4m) em melanóforos de Xenopus laevis." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/41/41135/tde-09022011-104538/.

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Muitos vertebrados ectotérmicos ajustam suas cores corporais para serem confundidos com o ambiente, através da migração de pigmentos no interior de cromatóforos, regulada por sistemas neurais e/ou hormonais. Essas mudanças de coloração auxiliam no mimetismo, termorregulação, comunicação social e expressão de comportamentos como excitação sexual, agressividade e medo. Entretanto, cromatóforos de inúmeras espécies respondem diretamente à luz. Estudos sobre a resposta à luz nos melanóforos de Xenopus laevis levaram à descoberta do fotopigmento melanopsina, uma opsina que está presente na retina d
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Wang, Erpei. "Pigments in Rust Fungi: Biosynthesis, Role in Plant-Pathogen Interactions, and Evolution." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/18434.

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Diseases caused by rust fungi represent critical constraints to global plant production. A characteristic feature of these pathogens is the striking pigments they produce in one or more spore forms, which give them a rusty appearance. These pigments are thought to protect rust fungi against UV radiation and oxidative stress, and possibly act as virulence factors. The cytoplasmic carotenoid pigment composition and relative abundance of 14 rust species were studied, including Puccinia graminis f. sp. tritici (Pgt), P. striiformis f. sp. tritici, P. triticina, P. hordei, P. psidii, P. thaliae, P
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Teh, Muy-Teck. "Cellular and molecular studies on pigment-granule translocation in Xenopus laevis melanophores." Thesis, King's College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312268.

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Hsiung, Bor-Kai. "COLOR PRODUCTION MECHANISMS IN SPIDERS AND THEIR BIOMIMICRY POTENTIAL." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1497355826810282.

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SUFI, BIANCA da S. "Utilização de cocultura de melanócitos e queratinócitos para avaliação da ação do líquido da castanha de caju (LCC) na pigmentação epidérmica." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10197.

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Made available in DSpace on 2014-10-09T12:35:54Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:03:26Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Gonçalves, Rita de Cássia Ribeiro [UNESP]. "Estudo da estrutura e da atividade biológica do pigmento melanina produzido pelo fungo Aspergillus nidulans." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/100739.

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Made available in DSpace on 2014-06-11T19:31:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-09-24Bitstream added on 2014-06-13T18:41:23Z : No. of bitstreams: 1 goncalves_rcr_dr_araiq.pdf: 2969131 bytes, checksum: 2ec7f5373394bf23e94222f4356154f3 (MD5)<br>Outros<br>Do fungo Aspergillus nidulans foi isolado um mutante que apresenta producao aumentada do pigmento melanina. Este pigmento, formado pela polimerizacao oxidativa de compostos fenolicos e/ou indolicos, pode estar presente na parede celular ou no meio de cultura. Embora nao seja essencial para o crescimento dos fungos, a mel
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Walsh, Neil. "Investigation into the genetic basis of carotenoid and melanin colouration in red-billed queleas." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609827.

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Gonçalves, Rita de Cássia Ribeiro. "Estudo da estrutura e da atividade biológica do pigmento melanina produzido pelo fungo Aspergillus nidulans /." Araraquara : [s.n.], 2008. http://hdl.handle.net/11449/100739.

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Orientador: Sandra Regina Pombeiro Sponchiado<br>Banca: Iracilda Zeppone Carlos<br>Banca: Valdecir Farias Ximenes<br>Banca: Jairo Kenupp Bastos<br>Dagmar Ruth Stach Machado<br>Resumo: Do fungo Aspergillus nidulans foi isolado um mutante que apresenta producao aumentada do pigmento melanina. Este pigmento, formado pela polimerizacao oxidativa de compostos fenolicos e/ou indolicos, pode estar presente na parede celular ou no meio de cultura. Embora nao seja essencial para o crescimento dos fungos, a melanizacao parece aumentar a capacidade de sobrevivencia das especies em condicoes desfavoraveis
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Books on the topic "MELANIN PIGMENT"

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Riley, P. A., and Jan Borovansky. Melanins and melanosomes: Biosynthesis, biogenesis, physiological, and pathological functions. Wiley-Blackwell, 2011.

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Ma, Xiao-Peng, and Xiao-Xiao Sun. Melanin: Biosynthesis, functions and health effects. Nova Science, 2011.

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International, Pigment Cell Conference (13th 1986 Tucson Ariz ). Advances in pigment cell research: Proceedings of symposia and lectures from the Thirteenth International Pigment Cell Conference held in Tucson, Arizona, October 5-9, 1986. Liss, 1988.

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Jeanfils, Joseph. Pigments et biosphère: Les couleurs de la vie. Vuibert, 2008.

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1929-, Bagnara Joseph T., ed. Biological, molecular, and clinical aspects of pigmentation: Proceedings of the XIIth International Pigment Cell Conference, Giessen, Federal Republic of Germany. University of Tokyo Press, 1985.

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Friede, Charles Robison. Diffusion Study of Dopa Melanin Pigment. Creative Media Partners, LLC, 2021.

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Armstrong, Bruce K., Claire M. Vajdic, and Anne E. Cust. Melanoma. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190238667.003.0057.

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Melanoma is a cancer of melanocytes, cells that produce the brown-black skin pigment melanin. Melanocytes originate in cells of the neural crest and migrate during embryogenesis, principally to the epidermis, eyes, and some mucous membranes (mouth, nose, esophagus, anus, genitourinary organs, and conjunctiva). Cutaneous melanoma afflicts mainly fair-skinned people of European origin, among whom sun exposure is the major cause. Five-year relative survival can exceed 90%. Invasive cutaneous melanoma in US whites occurs mostly on the trunk (34%), and upper limbs and shoulders (26%). Melanoma inci
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Powell, Jenny. Normal skin function. Edited by Patrick Davey and David Sprigings. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199568741.003.0243.

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In simplest terms, our skin is a layer that separates and protects us from the external environment. This assumes the skin is a passive covering to keep the insides safe and the outside out, and overlooks its enormous complexity. The skin is our largest organ and is constantly regenerating, but how efficiently it does so depends on a number of factors, some known, others unknown. It is an efficient mechanical barrier (designed for wear and repair), and a complex immunological membrane. It has a generous vascular, lymphatic, and nervous supply, all covering a considerable area. It has specialis
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Gawkrodger, David J. Disorders of pigmentation. Edited by Patrick Davey and David Sprigings. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199568741.003.0258.

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Skin colour is due to a mixture of the pigments melanin, oxyhaemoglobin (in blood), and carotene (in the stratum corneum and subcutaneous fat). Pigmentary diseases are common and particularly distressing to those with darker skin. Disorders of pigmentation often involve melanocytes. Vitiligo is the commonest disease of reduced pigmentation, and melasma is the commonest of hyperpigmentation.
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Biological, molecular, and clinical aspects of pigmentation: Proceedings of the XIIth International Pigment Cell Conference, Giessen, Federal Republic of Germany. University of Tokyo Press, 1985.

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Book chapters on the topic "MELANIN PIGMENT"

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Menke, Henk E. "Pigment Disorders and Pigment Manipulations." In The Melanin Millennium. Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4608-4_12.

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Arnheiter, Heinz, and Julien Debbache. "Development of Melanin-Bearing Pigment Cells in Birds and Mammals." In Pigments, Pigment Cells and Pigment Patterns. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1490-3_6.

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Gupta, Puja, Madangchanok Imchen, and Ranjith Kumavath. "Exploration and Characterization of Melanin Pigment Produced by Actinomycetes." In Methods in Actinobacteriology. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-1728-1_99.

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Chelliah, Ramachandran, and Deog-Hwan Oh. "Screening of Microbes for the Production of Pigment (Melanin)." In Methods in Actinobacteriology. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-1728-1_98.

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Wakamatsu, Kazumasa, and Shosuke Ito. "Melanins in Vertebrates." In Pigments, Pigment Cells and Pigment Patterns. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1490-3_2.

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Srivastava, Jyoti, Joyabrata Mal, Manju Verma, and Rupika Sinha. "Mini-review on Inhibitors of Human Tyrosinase." In Proceedings of the Conference BioSangam 2022: Emerging Trends in Biotechnology (BIOSANGAM 2022). Atlantis Press International BV, 2022. http://dx.doi.org/10.2991/978-94-6463-020-6_10.

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AbstractMelanin is a major pigment of human skin that protects the skin from harmful ultraviolet radiation, DNA damage and oxidative stress. However, the excess accumulation of melanin may lead to various hyperpigmentation-related diseases. Tyrosinase is a copper containing enzyme that regulates the rate-limiting step of melanin synthesis. So, inhibiting tyrosinase is the crucial target for researchers for the treatment of hyperpigmentation. Unfortunately, almost all the literature is based on mushroom tyrosinase (mTYR) for their application on humans as pure human tyrosinase (hTYR) is difficu
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Farthmann, B., S. Schmitz, K. Krasagakis, and C. E. Orfanos. "Photoprotection by Total Melanin Content and Pigment Phenotype (Eumelanin, Pheomelanin) in Human Melanoma Cell Lines." In Skin Cancer and UV Radiation. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60771-4_21.

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Taylor, Adam M., and Koen P. Vercruysse. "Analysis of Melanin-like Pigment Synthesized from Homogentisic Acid, with or without Tyrosine, and Its Implications in Alkaptonuria." In JIMD Reports. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/8904_2016_27.

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Belozerskaya, Tatiana A., Natalya N. Gessler, and Andrey A. Aver‘yanov. "Melanin Pigments of Fungi." In Fungal Metabolites. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-25001-4_29.

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Belozerskaya, Tatiana A., Natalya N. Gessler, and Andrey A. Aver‘yanov. "Melanin Pigments of Fungi." In Fungal Metabolites. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19456-1_29-1.

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Conference papers on the topic "MELANIN PIGMENT"

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Grass, David, Georgia M. Beasley, Martin C. Fischer, M. Angelica Selim, and Warren S. Warren. "Melanin imaging with pump-probe microscopy for diagnosis of metastatic melanoma." In CLEO: Applications and Technology. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.ath1b.1.

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Melanoma, the most aggressive skin cancer, is responsible for around 10,000 deaths annually. We are developing a diagnostic biomarker based on femtosecond pump-probe microscopy of melanin, a natural pigment found in most melanoma.
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Timokhin, K. M., I. V. Starchenko, and L. A. Belovezhets. "HORMONEMA MACROSPORUM AS A PROMISING MELANIN PRODUCER." In X Международная конференция молодых ученых: биоинформатиков, биотехнологов, биофизиков, вирусологов и молекулярных биологов — 2023. Novosibirsk State University, 2023. http://dx.doi.org/10.25205/978-5-4437-1526-1-132.

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Melanins are a class of polyfunctional compounds that may be a solution to the problem of human adaptive resources. In this work, we investigated the potential of the microorganism Hormonema macrosporum as a promising melanin producer. The optimal conditions for cultivation of the microorganism were selected. The best was cultivation on liquid glucose-collagen medium and solid mash-agar. The pigment yield amounted to 30,23 %.
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Lin, Tai-Yuan David, Woraphong Manuskiatti, Christine Dierickx, et al. "Influence of Hair Growth Cycle on Hair Follicle Destruction by Pulsed Ruby Laser Treatment in Newborn Mice." In Lasers in Dermatology: Bio-Optics and Treatment of Human Skin. Optica Publishing Group, 1997. http://dx.doi.org/10.1364/lid.1997.sac5.

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It has been shown that using normal mode ruby laser pulses (694 nm) is an effective method of selectively destroying brown or black pigmented hair follicles in adult Caucasians (Grossman et al, 1996). The pigment, melanin, contained within the dark hair follicles acts as a target for light absorption when exposed to a well characterized range of wavelengths (Anderson and Parrish, 1981). Based on principles of selective photothermolysis, exposure to carefully chosen wavelength and pulse duration characteristics result in preferential absorption by the target pigment and sufficient heating to ca
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Miura, Masahiro, Shuichi Makita, Shinnosuke Azuma, et al. "Retinal pigment epithelium-melanin specific contrast imaging by multi-contrast OCT." In Ophthalmic Technologies XXX, edited by Fabrice Manns, Per G. Söderberg, and Arthur Ho. SPIE, 2020. http://dx.doi.org/10.1117/12.2542922.

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Kilbride, Paul E., Kathleen M. Pori, and Kenneth R. Alexander. "Human ocular melanin assessed by imaging fundus reflectometry." In OSA Annual Meeting. Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oam.1988.wy4.

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Because of the possible role of melanin in various ocular pathologies, it is important to develop a noninvasive objective measurement of this ocular pigment. We have used imaging fundus reflectometry to assess the spatial distribution of melanin within the macular region. A microchannel plate-intensifier solid-state video camera viewed an area of the fundus (21° horizontally by 16° vertically) through the optics of a modified Zeiss fundus camera. A fiber-optic lightguide illuminated by a computer-controlled optical system replaced the normal Zeiss light source. Images of the unbleached and ble
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Shu, Xiao, Hao F. Zhang, and Wenzhong Liu. "Applying photoacoustics to quantification of melanin concentration in retinal pigment epithelium (Conference Presentation)." In Photons Plus Ultrasound: Imaging and Sensing 2016, edited by Alexander A. Oraevsky and Lihong V. Wang. SPIE, 2016. http://dx.doi.org/10.1117/12.2213840.

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Pask, H. M., and J. A. Piper. "0.9Watt 580nm solid-state laser source." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cwj3.

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Laser sources producing output in the yellow spectral region are of interest for a variety of display, remote-sensing and medical applications, including the removal of vascular lesions, for which the main requirement for the laser is strong absorption by haemoglobin, with minimal absorption by the melanin pigment in tissue. Average powers of about 0.5 to 1W are required at 580nm+/-5nm, and a high repetition-rate source is beneficial in reducing thermal damage to the surrounding tissue. A solid-state laser source would offer an attractive alternative to the laser sources currently used for the
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Harper, Danielle J., Thomas Konegger, Kornelia Schützenberger, et al. "Hyperspectral optical coherence tomography: a tool for in vivo visualization of melanin in the retinal pigment epithelium." In Optical Coherence Imaging Techniques and Imaging in Scattering Media, edited by Stephen A. Boppart, Maciej Wojtkowski, and Wang-Yuhl Oh. SPIE, 2019. http://dx.doi.org/10.1117/12.2526059.

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Meleppat, Ratheesh K., and Robert J. Zawadzki. "Directional optical coherence tomography: a novel method to detect the changes in melanin pigmentation of the retinal pigment epithelium." In Ophthalmic Technologies XXXII, edited by Daniel X. Hammer, Karen M. Joos, and Daniel V. Palanker. SPIE, 2022. http://dx.doi.org/10.1117/12.2610289.

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"Study of melanin and anthocyanin biosynthesis regulation in barley grain by transcriptomic analysis of near-isogenic lines with different pigment composition." In Plant Genetics, Genomics, Bioinformatics, and Biotechnology. Novosibirsk ICG SB RAS 2021, 2021. http://dx.doi.org/10.18699/plantgen2021-215.

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Reports on the topic "MELANIN PIGMENT"

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Jones, Robert M., Alison K. Thurston, Robyn A. Barbato, and Eftihia V. Barnes. Evaluating the Conductive Properties of Melanin-Producing Fungus, Curvularia lunata, after Copper Doping. Engineer Research and Development Center (U.S.), 2020. http://dx.doi.org/10.21079/11681/38641.

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Melanins are pigmented biomacromolecules found throughout all domains of life. Of melanins’ many unique properties, their malleable electrically conductive properties and their ability to chelate could allow them to serve as material for bioelectronics. Studies have shown that sheets or pellets of melanin conduct low levels of electricity; however, electrical conductance of melanin within a cellular context has not been thoroughly investigated. In addition, given the chelating properties of melanin, it is possible that introducing traditionally con-ductive metal ions could improve the conducti
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