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  1. Sun Exposure Behaviour and Vitamin D in South Asian Compared with White Caucasian Adolescents: Prospective Cohort Study

    Article • Nutrients, July 2026, MDPI AG

    Dr Mark D Farrar

  2. Skin Staphylococcus species differentially modulate keratinocyte cytokine secretion in response to UVB

    Article • Applied and Environmental Microbiology, April 2026, ASM Journals

    Dr Mark D Farrar

  3. Omalizumab Therapy Results in Defined Behavioural Changes and Improvements in Quality of Life in Solar Urticaria

    Article • Photodermatology Photoimmunology & Photomedicine, April 2026, Wiley

    Dr Mark D Farrar

  4. A Targeted Spatial Transcriptomics Framework for a High-Resolution Human Skin Cell Atlas

    Article • March 2026, Springer Science + Business Media

    Dr Mark D Farrar

  5. Solar urticaria involves rapid mast cell STAT3 activation and neutrophil recruitment, with FcεRI as an upstream regulator

    Article • Journal of Allergy and Clinical Immunology, May 2024, Elsevier

    Dr Mark D Farrar

  6. Intralesional photodynamic therapy induces apoptosis in basal cell carcinoma and Bowen's disease through caspase 3 and granzyme B

    Article • Journal of the European Academy of Dermatology and Venereology, March 2023, Wiley

    Dr Mark D Farrar

  7. Clinicophotobiological Characterization of Photoaggravated Atopic Dermatitis

    Article • JAMA Dermatology, September 2022, American Medical Association (AMA)

    Dr Mark D Farrar

  8. Ultraviolet radiation‐induced degradation of dermal extracellular matrix and protection by green tea catechins: a randomized controlled trial

    Article • Clinical and Experimental Dermatology, May 2022, Oxford University Press (OUP)

    Dr Mark D Farrar

  9. Older Adults Who Spend More Time Outdoors in Summer and Have Higher Dietary Vitamin D Than Younger Adults Can Present at Least as High Vitamin D Status: A Pilot Study

    Article • International Journal of Environmental Research and Public Health, March 2021, MDPI AG

    Dr Mark D Farrar

  10. Systemic drug photosensitivity—Culprits, impact and investigation in 122 patients

    Article • Photodermatology Photoimmunology & Photomedicine, July 2020, Wiley

    Dr Mark D Farrar

  11. A qualitative study of knowledge, behaviour and attitudes regarding vitamin D acquisition among patients with photosensitivity disorders

    Article • Photodermatology Photoimmunology & Photomedicine, April 2020, Wiley

    Dr Mark D Farrar

  12. UV radiation recruits CD4 + GATA3 + and CD8 + GATA3 + T cells while altering the lipid microenvironment following inflammatory resolution in human skin ...

    Article • Clinical & Translational Immunology, April 2020, Wiley

    Norah Algazaq, Dr Mark D Farrar

  13. Is Sunlight Exposure Enough to Avoid Wintertime Vitamin D Deficiency in United Kingdom Population Groups?

    Article • International Journal of Environmental Research and Public Health, August 2018, MDPI AG

    Dr Mark D Farrar

  14. A Feasibility Study of a Novel Low Level Light Therapy for Digital Ulcers in Systemic Sclerosis

    Article • Journal of Dermatological Treatment, June 2018, Taylor & Francis

    Dr Michael Hughes, Dr Mark D Farrar

  15. Fractional sunburn threshold UVR doses generate equivalent vitamin D and DNA damage in skin types I-VI, but with epidermal DNA damage gradient correlated to skin darkness

    Article • Journal of Investigative Dermatology, May 2018, Elsevier

    Dr Mark D Farrar

  16. Meeting Vitamin D Requirements in White Caucasians at UK Latitudes: Providing a Choice

    Article • Nutrients, April 2018, MDPI AG

    Dr Mark D Farrar

  17. Colour Counts: Sunlight and Skin Type as Drivers of Vitamin D Deficiency at UK Latitudes

    Article • Nutrients, April 2018, MDPI AG

    Dr Mark D Farrar

  18. Oral green tea catechins do not provide photoprotection from direct DNA damage induced by higher dose solar simulated radiation: A randomized controlled trial

    Article • Journal of the American Academy of Dermatology, February 2018, Elsevier

    Dr Mark D Farrar

  19. Differential reorganisation of cutaneous elastic fibres: a comparison of thein vivoeffects of broadband ultraviolet Bversussolar simulated radiation

    Article • Photochemical & Photobiological Sciences, January 2018, Springer Science + Business Media

    Dr Mark D Farrar

  20. A qualitative study of the knowledge, behaviour and attitudes of patients with skin cancer regarding sunlight exposure and vitamin D

    Article • Photodermatology Photoimmunology & Photomedicine, May 2017, Wiley

    Dr Mark D Farrar

  21. Topical photodynamic therapy: the preferred choice for cutaneous field-cancerization?

    Article • British Journal of Dermatology, May 2017, Wiley

    Dr Mark D Farrar

  22. Target the message: a qualitative study exploring knowledge and cultural attitudes to sunlight and vitamin D in Greater Manchester, U.K.

    Article • British Journal of Dermatology, October 2016, Wiley

    Dr Mark D Farrar

  23. Advanced glycation end products in skin ageing and photoageing: what are the implications for epidermal function?

    Article • Experimental Dermatology, October 2016, Wiley

    Dr Mark D Farrar

  24. Turning up the heat: mechanistic insights into thermal photodynamic therapy

    Article • British Journal of Dermatology, September 2016, Wiley

    Dr Mark D Farrar

  25. Sun Exposure Behavior, Seasonal Vitamin D Deficiency, and Relationship to Bone Health in Adolescents

    Article • The Journal of Clinical Endocrinology & Metabolism, August 2016, Endocrine Society

    Dr Mark D Farrar

  26. Green tea catechins and their metabolites in human skin before and after exposure to ultraviolet radiation

    Article • The Journal of Nutritional Biochemistry, January 2016, Elsevier

    Dr Mark D Farrar

  27. Green tea catechins and UVR-induced inflammation

    Article • American Journal of Clinical Nutrition, July 2015, Oxford University Press (OUP)

    Dr Mark D Farrar

  28. High performance liquid chromatography tandem mass spectrometry dual extraction method for identification of green tea catechin metabolites excreted in human urine

    Article • Journal of Chromatography B, December 2014, Elsevier

    Dr Mark D Farrar

  29. Sunlight exposure and photoprotection behaviour of white Caucasian adolescents in the UK

    Article • Journal of the European Academy of Dermatology and Venereology, September 2014, Wiley

    Dr Mark D Farrar

  30. Sunscreen photopatch testing: a series of 157 children

    Article • British Journal of Dermatology, July 2014, Oxford University Press (OUP)

    Dr Mark D Farrar

  31. Topical photodynamic therapy following excisional wounding of human skin increases production of transforming growth factor-β3 and matrix metalloproteinases 1 and 9, with associated improvement in dermal matrix organization

    Article • British Journal of Dermatology, June 2014, Oxford University Press (OUP)

    Dr Mark D Farrar

  32. The Role of Bacteria

    Article • January 2014, Springer Science + Business Media

    Dr Mark D Farrar

  33. Efficacy of a dose range of simulated sunlight exposures in raising vitamin D status in South Asian adults: implications for targeted guidance on sun exposure

    Article • American Journal of Clinical Nutrition, April 2013, Oxford University Press (OUP)

    Dr Mark D Farrar

  34. Oral green tea catechin metabolites are incorporated into human skin and protect against UV radiation-induced cutaneous inflammation in association with reduced production of pro-inflammatory eicosanoid 12-hydroxyeicosatetraenoic acid

    Article • British Journal Of Nutrition, January 2013, Cambridge University Press

    Dr Mark D Farrar

  35. Dietary intake of vitamin D amongst UK adolescents

    Article • Proceedings of The Nutrition Society, January 2013, Cambridge University Press

    Dr Mark D Farrar

  36. Reply to EA Langan

    Article • American Journal of Clinical Nutrition, June 2012, Oxford University Press (OUP)

    Dr Mark D Farrar

  37. Topical photodynamic therapy significantly reduces epidermal Langerhans cells during clinical treatment of basal cell carcinoma

    Article • British Journal of Dermatology, April 2012, Oxford University Press (OUP)

    Dr Mark D Farrar

  38. Recommended summer sunlight exposure amounts fail to produce sufficient vitamin D status in UK adults of South Asian origin

    Article • American Journal of Clinical Nutrition, September 2011, Oxford University Press (OUP)

    Dr Mark D Farrar

  39. Treatment of colitis with a commensal gut bacterium engineered to secrete human tgf-β1 under the control of dietary xylan

    Article • Inflammatory Bowel Diseases, September 2011, Oxford University Press (OUP)

    Dr Terence R Whitehead, Dr Mark D Farrar

  40. Topical aminolaevulinic acid-photodynamic therapy produces an inflammatory infiltrate but reduces Langerhans cells in healthy human skin in vivo

    Article • British Journal of Dermatology, August 2011, Wiley

    Dr Mark D Farrar

  41. The impact of photosensitivity disorders on aspects of lifestyle

    Article • British Journal of Dermatology, September 2010, Wiley

    Dr Mark D Farrar

  42. Xylan-regulated delivery of human keratinocyte growth factor-2 to the inflamed colon by the human anaerobic commensal bacterium Bacteroides ovatus

    Article • Gut, September 2009, BMJ

    Dr Mark D Farrar

  43. Differential innate immune responses of a living skin equivalent model colonized by Staphylococcus epidermidis or Staphylococcus aureus

    Article • FEMS Microbiology Letters, December 2008, Oxford University Press (OUP)

    Dr Mark D Farrar

  44. Identification and use of the putative Bacteroides ovatus xylanase promoter for the inducible production of recombinant human proteins

    Article • Microbiology, October 2008, Society for General Microbiology

    Dr Mark D Farrar

  45. Abstracts

    Article • Journal of Investigative Dermatology, October 2007, Elsevier

    Dr Mark D Farrar

  46. Characterisation of cryptic plasmid pPG01 from Propionibacterium granulosum, the first plasmid to be isolated from a member of the cutaneous propionibacteria

    Article • Plasmid, July 2007, Elsevier

    Dr Mark D Farrar

  47. Genome Sequence and Analysis of a Propionibacterium acnes Bacteriophage

    Article • Journal of Bacteriology, March 2007, ASM Journals

    Dr Mark D Farrar

  48. Resolution of inflammatory acne vulgaris may involve regulation of CD4+ T-cell responses to Propionibacterium acnes

    Article • British Journal of Dermatology, March 2007, Wiley

    Dr Mark D Farrar

  49. Gut Microbiology - Research to improve health, immune response and nutrition

    Article • Reproduction Nutrition Développement, January 2006, EDP Sciences

    Dr Mark D Farrar

  50. Engineering of the gut commensal bacterium Bacteroides ovatus to produce and secrete biologically active murine interleukin-2 in response to xylan

    Article • Journal of Applied Microbiology, May 2005, Wiley

    Dr Mark D Farrar

  51. Different cytokine response of primary colonic epithelial cells to commensal bacteria

    Article • World Journal of Gastroenterology, January 2005, Baishideng Publishing Group Co., Limited (formerly WJG Press)

    Dr Mark D Farrar

  52. Microbial Colonization Dynamics of the Axillae of an Individual over an Extended Period

    Article • Acta Dermato-Venereologica, January 2005, Acta Dermato-Venereologica

    Dr Mark D Farrar

  53. Acne: Inflammation

    Article • Clinics in Dermatology, September 2004, Elsevier

    Dr Mark D Farrar

  54. Evidence for diversity within Propionibacterium acnes: a comparison of the T-cell stimulatory activity of isolates from inflammatory acne, endocarditis and the laboratory

    Article • Journal of the European Academy of Dermatology and Venereology, July 2004, Wiley

    Dr Mark D Farrar

  55. Proinflammatory cytokine production by human keratinocytes stimulated with Propionibacterium acnes and P. acnes GroEL

    Article • British Journal of Dermatology, March 2004, Wiley

    Dr Mark D Farrar

  56. Heat shock proteins and inflammatory acne vulgaris: molecular cloning, overexpression and purification of a Propionibacterium acnes GroEL and DnaK homologue

    Article • FEMS Microbiology Letters, October 2000, Oxford University Press (OUP)

    Dr Mark D Farrar

  57. Heat shock proteins and inflammatory acne vulgaris: molecular cloning, overexpression and purification of aPropionibacterium acnesGroEL and DnaK homologue

    Article • FEMS Microbiology Letters, October 2000, Oxford University Press (OUP)

    Dr Mark D Farrar

  58. Hands and face exposure for vitamin D production

    Article • Springer Science + Business Media

    Dr Mark D Farrar