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Hou X, Wei Z, Zouboulis CC, Ju Q. Aging in the sebaceous gland. Front Cell Dev Biol 2022; 10:909694. [PMID: 36060807 PMCID: PMC9428133 DOI: 10.3389/fcell.2022.909694] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 07/18/2022] [Indexed: 11/13/2022] Open
Abstract
Sebaceous glands (SGs) originate from hair follicular stem cells and secrete lipids to lubricate the skin. The coordinated effects of intrinsic and extrinsic aging factors generate degradation of SGs at a late age. Senescence of SGs could be a mirror of the late aging of both the human body and skin. The procedure of SG aging goes over an initial SG hyperplasia at light-exposed skin areas to end with SG atrophy, decreased sebum secretion, and altered sebum composition, which is related to skin dryness, lack of brightness, xerosis, roughness, desquamation, and pruritus. During differentiation and aging of SGs, many signaling pathways, such as Wnt/β-catenin, c-Myc, aryl hydrocarbon receptor (AhR), and p53 pathways, are involved. Random processes lead to random cell and DNA damage due to the production of free radicals during the lifespan and neuroendocrine system alterations. Extrinsic factors include sunlight exposure (photoaging), environmental pollution, and cigarette smoking, which can directly activate signaling pathways, such as Wnt/β-catenin, Notch, AhR, and p53 pathways, and are probably associated with the de-differentiation and hyperplasia of SGs, or indirectly activate the abovementioned signaling pathways by elevating the inflammation level. The production of ROS during intrinsic SG aging is less, the signaling pathways are activated slowly and mildly, and sebocytes are still differentiated, yet terminal differentiation is not completed. With extrinsic factors, relevant signaling pathways are activated rapidly and fiercely, thus inhibiting the differentiation of progenitor sebocytes and even inducing the differentiation of progenitor sebocytes into keratinocytes. The management of SG aging is also mentioned.
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Affiliation(s)
- Xiaoxiao Hou
- Department of Dermatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
- Berlin Brandenburg Center for Regenerative Therapies, Charite Universitatsmedizin Berlin, Berlin, Germany
| | - Ziyu Wei
- Genetic Skin Disease Center, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China
| | - Christos C Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
- *Correspondence: Christos C Zouboulis, ; Qiang Ju,
| | - Qiang Ju
- Department of Dermatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
- *Correspondence: Christos C Zouboulis, ; Qiang Ju,
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Hussein L, Perrett CM. Treatment of sebaceous gland hyperplasia: a review of the literature. J DERMATOL TREAT 2020; 32:866-877. [PMID: 32011918 DOI: 10.1080/09546634.2020.1720582] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Sebaceous gland hyperplasia (SGH) is a benign cutaneous proliferation of the sebaceous glands that primarily affects the elderly group and frequently appears in individuals receiving long-term ciclosporin therapy such as organ transplant recipients. In the latter group, SGHs are usually multiple in number and occur predominantly on the face. Patients may find their appearance cosmetically undesirable and, in some cases, may result in significant negative psychological impact. There is, therefore, a demand for safe and effective treatment for SGH particularly in this patient group. A variety of treatment modalities have been previously described including electrodessication,surgery, cryotherapy, oral isotretinoin, lasers, and topical photodynamic therapy (PDT). METHODS The objective of this paper is to review the various treatment modalities for SGH. We performed a systematic literature review using the National Library of Medicine's PubMed Database, whereby we included articles that met the following criteria: published in English, not focused on SGH in rhinophyma, studies with adult sample with SGH lesions, and studies with patients with SGH related to ciclosporin. RESULTS Our findings show that the literature is categorized according to the treatment modalities ranging from conventional techniques such as oral isotretinoin and cryotherapy to more advanced topical PDT, lasers and a combination of both. We found that effectiveness does not depend on the technique itself but instead on the number of lesions, financial cost, psychological factors, skin phototype and age. CONCLUSIONS Our work shows that SGH can be treated effectively by customizing the treatment modality according to different parameters, while effectively maintaining clearance of SGH lesions with best cosmetic outcome.
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Affiliation(s)
- Lama Hussein
- Department of Dermatology, University College London Hospital, London, UK
| | - Conal M Perrett
- Department of Dermatology, University College London Hospital, London, UK
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3
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Wang SP, Chang YJ, Chi CC, Wang SH, Tsai TH. Using pulsed dye laser to treat sebaceous hyperplasia: comparison of short and long pulse-duration pulsed dye laser. DERMATOL SIN 2017. [DOI: 10.1016/j.dsi.2017.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Abstract
Sebaceous hyperplasia (SH), a common, benign condition of sebaceous gland, presents most commonly over face. Lesions are usually described as asymptomatic, soft, discrete, and yellow with a surface that ranges from smooth to slightly verrucous. The pathogenesis is not fully understood. It does not require treatment, but many time lesions can be cosmetically unfavorable than, need to be destroyed or excised. A case of 23-year-old male presenting with the skin colored to hyperpigmented linear hyperkeratotic plaque mimicking a wart, over the right ear is presented here, which was diagnosed as SH.
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Affiliation(s)
- Pragya A Nair
- Department of Dermatology and Venereology, Pramukshwami Medical College, Karamsad, Gujarat, India
| | - Nilofar G Diwan
- Department of Dermatology and Venereology, Pramukshwami Medical College, Karamsad, Gujarat, India
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Simmons B, Griffith R, Falto-Aizpurua L, Bray F, Nouri K. Light and laser therapies for the treatment of sebaceous gland hyperplasia a review of the literature. J Eur Acad Dermatol Venereol 2015; 29:2080-7. [DOI: 10.1111/jdv.13066] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 02/04/2015] [Indexed: 11/28/2022]
Affiliation(s)
- B.J. Simmons
- Department of Dermatology and Cutaneous Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - R.D. Griffith
- Department of Dermatology and Cutaneous Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - L.A. Falto-Aizpurua
- Department of Dermatology and Cutaneous Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - F.N. Bray
- Department of Dermatology and Cutaneous Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - K. Nouri
- Department of Dermatology and Cutaneous Surgery; University of Miami Miller School of Medicine; Miami FL USA
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6
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Gold MH. Aminolevulinic acid photodynamic therapy: medical evidence for its expanded use. Expert Rev Med Devices 2014; 3:357-71. [PMID: 16681457 DOI: 10.1586/17434440.3.3.357] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Photodynamic therapy (PDT) has gained much popularity over the past several years as clinicians and researchers have expanded upon its indications and how one should utilize PDT in everyday practice. PDT is not a new field within dermatology or medicine in general, but for all practical reasons, PDT is considered to still be in its infancy. This article will review the history of PDT, explore PDT in both the US and European market place, and show how PDT is best utilized today in the USA. Finally, future ideas/thoughts on where PDT is heading will be surmised.
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Affiliation(s)
- Michael H Gold
- Gold Skin Care Center, Tennessee Clinical Research Center, 2000 Richard Jones Road, Suite 220, Nashville, TN 37215, USA.
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Calzavara-Pinton PG, Rossi MT, Aronson E, Sala R. A retrospective analysis of real-life practice of off-label photodynamic therapy using methyl aminolevulinate (MAL-PDT) in 20 Italian dermatology departments. Part 1: inflammatory and aesthetic indications. Photochem Photobiol Sci 2013; 12:148-57. [PMID: 22949035 DOI: 10.1039/c2pp25124h] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Experimental investigations have demonstrated that photodynamic therapy (PDT) with methyl aminolevulinate (MAL) may be a useful treatment in several inflammatory skin disorders and aesthetic indications. To assess the effectiveness, tolerability and safety of off-label MAL-PDT in daily clinical practice in 20 Italian hospital centers, a retrospective observational study of medical records of patients treated for off-label inflammatory and aesthetic indications was carried out. In all patients standard treatment options had been either ineffective, unacceptably toxic, or medically contraindicated. Clinical data regarding 221 patients affected by 22 different diseases were collected. The most common off-label indication was acne vulgaris, with >75% improvement in 72.8% of patients. Other disorders of the sebaceous gland, i.e. acne rosacea, hidradenitis suppurativa and sebaceous hyperplasia, were less responsive. Alopecia areata did not show any improvement. Granuloma annulare and necrobiosis lipoidica showed marked or moderate response in the majority of treated patients. The rate of patients with complete remission was lower for inflammatory skin disorders with hyperkeratosis, i.e. psoriasis (6/17) and porokeratosis (3/16). The efficacy for lichenoid dermatoses was dependent on the clinical variant (erosive and scleroatrophic were more responsive than hypertrophic). Only 1 of 6 patients with Zoon balanitis had a marked improvement. MAL-PDT of venous leg ulcers, photo-aging and hypertrophic scars led to a marked remission in 3/5, 3/6 and 5/8 patients, respectively. The treatment had to be interrupted because of strong pain and burning in 24 patients. Long term adverse events were not registered. Most patients with marked improvement had lasting remission with overall excellent cosmetic outcomes. The present findings demonstrate a high interest in off-label uses of MAL-PDT for inflammatory skin disorders. According to the observed clinical responses, safety, and favorable cosmetic results, MAL-PDT seems to have a potential therapeutic role for the treatment of granulomatous dermal disorders and follicular inflammatory diseases whereas results in other conditions are less encouraging.
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Noh S, Shin JU, Jung JY, Lee JH. A case of sebaceous hyperplasia maintained on low-dose isotretinoin after carbon dioxide laser treatment. Int J Dermatol 2013; 53:e151-3. [PMID: 23621277 DOI: 10.1111/j.1365-4632.2012.05823.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Seongmin Noh
- Department of Dermatology, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, South Korea
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9
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Morton C, Szeimies RM, Sidoroff A, Braathen L. European guidelines for topical photodynamic therapy part 2: emerging indications - field cancerization, photorejuvenation and inflammatory/infective dermatoses. J Eur Acad Dermatol Venereol 2012. [DOI: 10.1111/jdv.12026] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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10
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Ethirajan M, Chen Y, Joshi P, Pandey RK. The role of porphyrin chemistry in tumor imaging and photodynamic therapy. Chem Soc Rev 2010; 40:340-62. [PMID: 20694259 DOI: 10.1039/b915149b] [Citation(s) in RCA: 1441] [Impact Index Per Article: 102.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In recent years several review articles and books have been published on the use of porphyrin-based compounds in photodynamic therapy (PDT). This critical review is focused on (i) the basic concept of PDT, (ii) advantages of long-wavelength absorbing photosensitizers (PS), (iii) a brief discussion on recent advances in developing PDT agents, and (iv) the various synthetic strategies designed at the Roswell Park Cancer Institute, Buffalo, for developing highly effective long-wavelength PDT agents and their utility in constructing the conjugates with tumor-imaging and therapeutic potential (Theranostics). The clinical status of certain selected PDT agents is also summarized (205 references).
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Affiliation(s)
- Manivannan Ethirajan
- PDT Center, Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
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11
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Sand M, Sand D, Thrandorf C, Paech V, Altmeyer P, Bechara FG. Cutaneous lesions of the nose. Head Face Med 2010; 6:7. [PMID: 20525327 PMCID: PMC2903548 DOI: 10.1186/1746-160x-6-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Accepted: 06/04/2010] [Indexed: 12/31/2022] Open
Abstract
Skin diseases on the nose are seen in a variety of medical disciplines. Dermatologists, otorhinolaryngologists, general practitioners and general plastic and dermatologic surgeons are regularly consulted regarding cutaneous lesions on the nose. This article is the second part of a review series dealing with cutaneous lesions on the head and face, which are frequently seen in daily practice by a dermatologic surgeon. In this review, we focus on those skin diseases on the nose where surgery or laser therapy is considered a possible treatment option or that can be surgically evaluated.
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Affiliation(s)
- Michael Sand
- Department of Dermatology and Allergology, Dermatologic Surgery Unit, Ruhr-University Bochum, Gudrunstr. 56, 44791 Bochum, Germany
| | - Daniel Sand
- Case Western Reserve University, School of Medicine, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA
| | - Christina Thrandorf
- Department of Dermatology and Allergology, Dermatologic Surgery Unit, Ruhr-University Bochum, Gudrunstr. 56, 44791 Bochum, Germany
| | - Volker Paech
- Department of Dermatology and Allergology, Dermatologic Surgery Unit, Ruhr-University Bochum, Gudrunstr. 56, 44791 Bochum, Germany
| | - Peter Altmeyer
- Department of Dermatology and Allergology, Dermatologic Surgery Unit, Ruhr-University Bochum, Gudrunstr. 56, 44791 Bochum, Germany
| | - Falk G Bechara
- Department of Dermatology and Allergology, Dermatologic Surgery Unit, Ruhr-University Bochum, Gudrunstr. 56, 44791 Bochum, Germany
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Affiliation(s)
- Rakesh Kumar Tekade
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr. Hari Singh Gour University, Sagar-470 003, India
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13
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Abstract
Multicentre randomized controlled studies now demonstrate high efficacy of topical photodynamic therapy (PDT) for actinic keratoses, Bowen's disease (BD) and superficial basal cell carcinoma (BCC), and efficacy in thin nodular BCC, while confirming the superiority of cosmetic outcome over standard therapies. Long-term follow-up studies are also now available, indicating that PDT has recurrence rates equivalent to other standard therapies in BD and superficial BCC, but with lower sustained efficacy than surgery in nodular BCC. In contrast, current evidence does not support the use of topical PDT for squamous cell carcinoma. PDT can reduce the number of new lesions developing in patients at high risk of skin cancer and may have a role as a preventive therapy. Case reports and small series attest to the potential of PDT in a wide range of inflammatory/infective dermatoses, although recent studies indicate insufficient evidence to support its use in psoriasis. There is an accumulating evidence base for the use of PDT in acne, while detailed study of an optimized protocol is still required. In addition to high-quality treatment site cosmesis, several studies observe improvements in aspects of photoageing. Management of treatment-related pain/discomfort is a challenge in a minority of patients, and the modality is otherwise well tolerated. Long-term studies provide reassurance over the safety of repeated use of PDT.
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Affiliation(s)
- C A Morton
- Department of Dermatology, Stirling Royal Infirmary, Stirling FK2 8AU, UK.
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14
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Letter. Dermatol Surg 2008. [DOI: 10.1097/00042728-200808000-00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Toll A, Parera ME, Vélez M, Pujol RM. Letter: photodynamic therapy with methyl aminolevulinate induces phototoxic reactions on areas of the nose adjacent to basal cell carcinomas and actinic keratoses. Dermatol Surg 2008; 34:1145-7; discussion 1147-8. [PMID: 18518890 DOI: 10.1111/j.1524-4725.2008.34232.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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MacCormack MA. Photodynamic Therapy in Dermatology: An Update on Applications and Outcomes. ACTA ACUST UNITED AC 2008; 27:52-62. [DOI: 10.1016/j.sder.2007.12.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Calzavara-Pinton PG, Venturini M, Sala R. Photodynamic therapy: update 2006. Part 2: Clinical results. J Eur Acad Dermatol Venereol 2007; 21:439-51. [PMID: 17373968 DOI: 10.1111/j.1468-3083.2006.02038.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In several randomized, controlled studies, the application of a standard preparation containing methyl-aminolevulinate (MAL; Metvix, Galderma, F), followed by red light irradiation proved effective and well tolerated in the treatment of actinic keratosis and basal cell carcinoma, and has now been approved for clinical use in European countries. A brand name aminolevulinic acid (ALA) solution (Levulan Kerastick, Dusa Pharmaceuticals Inc., Wilmington, MA) plus blue light exposure has been approved for the treatment of actinic keratosis in the USA. Randomized and controlled studies have shown that MAL as well as ALA are also effective in the treatment of Bowen's disease. In addition, a large and growing number of open studies or case reports have evaluated its use in the treatment of a broad range of other neoplastic, inflammatory and infectious skin diseases. However, efficacy and definite advantages over standard therapies remain to be clarified because the experimental design of these studies was often poor, the number of enrolled patients was generally low, and the follow-up was shorter than 12 months. However, these studies have suggested a few possible clinical applications worthy of further investigation. A growing number of laboratory and clinical findings suggest that several new synthetic sensitizers, besides ALA and MAL, may be helpful in the treatment of non-melanoma skin cancers, melanoma metastasis, and selected inflammatory and infective skin diseases. These compounds are deliverable intravenously, have short half-lives both in the blood and skin, and are highly efficient. However, they are as of yet not approved for clinical use.
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Affiliation(s)
- P G Calzavara-Pinton
- Department of Dermatology, Azienda Ospedaliera Spedali Civili and University of Brescia, P.le Spedali Civili 1, 25123, Brescia, Italy.
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Kim YJ, Kang HY, Lee ES, Kim YC. Treatment of Fordyce spots with 5-aminolaevulinic acid-photodynamic therapy. Br J Dermatol 2007; 156:399-400. [PMID: 17223899 DOI: 10.1111/j.1365-2133.2006.07653.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kim SK, Do JE, Kang HY, Lee ES, Kim YC. Combination of topical 5-aminolevulinic acid–photodynamic therapy with carbon dioxide laser for sebaceous hyperplasia. J Am Acad Dermatol 2007; 56:523-4. [PMID: 17317498 DOI: 10.1016/j.jaad.2006.10.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2006] [Revised: 09/15/2006] [Accepted: 10/12/2006] [Indexed: 11/29/2022]
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20
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Gold MH. Acne and PDT: new techniques with lasers and light sources. Lasers Med Sci 2007; 22:67-72. [PMID: 17225060 DOI: 10.1007/s10103-006-0420-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2006] [Accepted: 06/12/2006] [Indexed: 10/23/2022]
Abstract
Acne vulgaris is one of the most common dermatologic disorders encountered in everyday practice. Treatment options for this often psychologically scarring disease are numerous and, for many individuals, provide relief from the disorder. However, factors such as antibiotic resistance and slow onset of action from many topical therapies have led researchers to seek out alternative therapies, especially for those suffering from moderate to severe inflammatory acne vulgaris. Lasers and light sources are finding increased usage in the treatment of inflammatory acne vulgaris. Light sources including blue lights and intense pulsed lights are becoming regular additions to routine medical management to enhance the therapeutic response. Finally, photodynamic therapy may change many of the acne vulgaris paradigms, as its place is being defined in the treatment of moderate to severe inflammatory acne vulgaris. More and more clinical trials are showing the effectiveness of 5-aminolevulinic acid and photodynamic therapy in the treatment of moderate to severe inflammatory acne vulgaris.
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Affiliation(s)
- Michael H Gold
- Gold Skin Care Center, 2000 Richard Jones Road, Suite 220, Nashville, TN 37215, USA.
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Abstract
Current therapies for sebaceous hyperplasia (SH) have a high risk for adverse effects and recurrence of treated lesions. The theoretic basis for the treatment of SH by photodynamic therapy (PDT) with 5-aminolevulinic acid (ALA) has been established. Studies show that 1 hour is sufficient ALA incubation time to achieve clearance, and ALA-induced protoporphyrin IX may be activated with a 585-nm pulsed dye laser device, blue light source, or an intense pulsed light device. Complete clearance may be achieved with one to six treatments; however, long-term recurrence rates are not established. ALA PDT is a safe and effective modality for the treatment of SH lesions of all sizes.
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Affiliation(s)
- Donald F Richey
- North Valley Dermatology Center, 251 Cohasset Road, Suite 240, Chico, CA 95926, USA.
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Photodynamic therapy for malignant and non-malignant diseases: clinical investigation and application. Chin Med J (Engl) 2006. [DOI: 10.1097/00029330-200605020-00009] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Abstract
Light-based treatments for acne are becoming increasingly commonplace in dermatology. This article reviews various light approaches in acne therapy. Methods are discussed from an anatomical and a functional perspective. The emphasis is on the practicality of treatment as well as the pros and cons of various devices. Also, a review of the recent literature is presented. The article is intended to give the reader a panoramic view of this still-young and developing area. Most likely, light-based acne treatment will receive more popularity as dermatologists learn how to integrate this type of therapy within the context of more established drug agents.
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Affiliation(s)
- E Victor Ross
- Dermatology Department, Naval Medical Center San Diego, 34800 Bob Wilson Drive, San Diego, CA 92134, USA.
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Abstract
ALA-PDT is a safe, well-tolerated, and effective treatment for many dermatologic conditions. Current data most strongly support its use in the treatment of actinic damage, but further investigation into alternative uses continues. Current efficacy is limited primarily by the depth of penetration of the photosensitizing agent and the activating light source. Even with this limitation, the potential applications of PDT are numerous. As new technology is developed to overcome current restraints, the future of PDT is wide open.
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Abstract
Photodynamic therapy (PDT) has received increased attention since the regulatory approvals have been granted to several photosensitizing drugs and light applicators worldwide. Much progress has been seen in basic sciences and clinical photodynamics in recent years. This review will focus on new developments of clinical investigation and discuss the usefulness of various forms of PDT techniques for curative or palliative treatment of malignant and non-malignant diseases.
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Affiliation(s)
- Z Huang
- HealthONE Alliance, 899 Logan Street, Suite 203, Denver, CO 80203, USA.
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Affiliation(s)
- E Victor Ross
- Dermatology Department, Naval Hospital San Diego, San Diego, California, USA
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