Displaying publications 101 - 120 of 952 in total

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  1. Lajis AFB, Ariff AB
    J Cosmet Dermatol, 2019 Jun;18(3):703-727.
    PMID: 30866156 DOI: 10.1111/jocd.12900
    Human skin pigmentation is a result of constitutive and facultative pigmentation. Facultative pigmentation is frequently stimulated by UV radiation, pharmacologic drugs, and hormones whereby leads to the development of abnormal skin hyperpigmentation. To date, many state-of-art depigmenting compounds have been studied using in vitro model to treat hyperpigmentation problems for cosmetic dermatological applications; little attention has been made to compare the effectiveness of these depigmenting compounds and their mode of actions. In this present article, new and recent depigmenting compounds, their melanogenic pathway targets, and modes of action are reviewed. This article compares the effectiveness of these new depigmenting compounds to modulate several melanogenesis-regulatory enzymes and proteins such as tyrosinase (TYR), TYR-related protein-1 (TRP1), TYR-related protein-2 (TRP2), microphthalmia-associated transcription factor (MITF), extracellular signal-regulated kinase (ERK) and N-terminal kinases (JNK) and mitogen-activated protein kinase p38 (p38 MAPK). Other evidences from in vitro assays such as inhibition on melanosomal transfer, proteasomes, nitric oxide, and inflammation-induced melanogenesis are also highlighted. This article also reviews analytical techniques in different assays performed using in vitro model as well as their advantages and limitations. This article also provides an insight on recent finding and re-examination of some protocols as well as their effectiveness and reliability in the evaluation of depigmenting compounds. Evidence and support from related patents are also incorporated in this present article to give an overview on current patented technology, latest trends, and intellectual values of some depigmenting compounds and protocols, which are rarely highlighted in the literatures.
    Matched MeSH terms: Skin/drug effects; Skin/metabolism; Skin Pigmentation/drug effects*; Skin Lightening Preparations/pharmacology*; Skin Lightening Preparations/therapeutic use
  2. Akhtar A, Ahmad Hassali MA, Zainal H, Khan AH
    J Dermatolog Treat, 2021 Nov;32(7):778-782.
    PMID: 31916477 DOI: 10.1080/09546634.2020.1714539
    BACKGROUND: Geriatric population is increasing day by day throughout the world and there is a critical need to provide them the best health services including dermatological care due to their weakened immune system. The main objective of this study is to determine the prevalence and factors affecting the treatment outcomes of skin infections among elderly population.

    METHODS: A 5-year retrospective cross-sectional study was conducted at the Department of Dermatology, Hospital Pulau Pinang. Patients aged ≥65 years of age with confirmed diagnosis of skin infection were included in the study.

    RESULTS: A total of 455 patients were included and the most prevalent skin infections were eczema (27.6%) followed by dermatitis (13.8%), xerosis (13.8%), and bullous pemphigoid (8.8%). Cloxacillin (18%), Tetracycline (7.9%), and Unasyn (Ampicillin and Sulbactam) (5.7%) are the common antibiotics prescribed to treat skin infections. Age, alcohol consumption, polypharmacy, and presence of other co-morbidities are the most important factors that affected the treatment outcomes of skin infections among geriatrics.

    CONCLUSION: Eczema is the most prevalent skin infection among the elderly population. Age, consumption of alcohol, usage of more than five medicines simultaneously, and presence of co-morbidities are the main factors that are involved in better treatment outcomes of skin infections among study population.

    Matched MeSH terms: Skin Diseases*
  3. Lim T, Frank K, Hadjab B
    J Cosmet Dermatol, 2022 Jan;21(1):207-219.
    PMID: 34255904 DOI: 10.1111/jocd.14342
    Injectable rejuvenation treatments used in Caucasians might not always suit Asians as the visible signs of aging manifest differently, underscoring a need for Asian-specific strategies that correct underlying structural deficiencies and cumulative age-related changes. The presented Target-Specific Sandwich Technique (TSST) aims to simultaneously restore, rejuvenate, and enhance faces through the distribution of minute amounts of different fillers with different rheologies, using a minimal number of entry points in strategic facial areas and different soft tissue layers in Asians. A total of 14 patients underwent the presented TSST and were subsequently assessed for satisfaction with the treatment and the outcome of the treatment. With 3 cc of fillers, patients experienced a rejuvenated appearance with brow support, brow ridge softening, less severe nasolabial folds, and corrected tear trough hollows. Fillers in the lateral canthal and mandibular angles lifted mouth corners, improved submandibular jowls, and defined the lower face. Although the prejowl sulcus received minimal filler, it appeared subtler, relaxed, and had fewer lines visible while smiling. Overall, patients appeared less tense, rejuvenated, and had improved light reflection and firmer skin. These were due to tissues being supported upward and laterally by fillers in areas of bone resorption-induced volume loss.
    Matched MeSH terms: Skin Aging*
  4. U Patil R, T Anegundi R, R Gujjar K, Indushekar KR
    Int J Clin Pediatr Dent, 2017 06 01;10(2):196-200.
    PMID: 28890623 DOI: 10.5005/jp-journals-10005-1434
    Pemphigus is a chronic mucocutaneous disease that initially manifests in the form of intraoral blisters which spread to other mucous membrane and skin. This study describes an unusual case of chronic generalized childhood pemphigus disease in an 11-year-old girl, who presented with multiple vesicles all over her body. Such a condition is seen more often in older people rather than children. It is crucial for dental professionals to be familiar with the diagnosis of bullous skin diseases in children and adolescents, especially in its initial stages in order to prevent the serious consequences and morbidity. The article highlights clinical presentation, histopathology, and successful management strategies useful for pediatric dental practice.

    HOW TO CITE THIS ARTICLE: Patil RU, Anegundi RT, Gujjar KR, Indushekar KR. Childhood Occurrence of Pemphigus. Int J Clin Pediatr Dent 2017;10(2):196-200.

    Matched MeSH terms: Skin; Skin Diseases, Vesiculobullous
  5. Ng SY, Eh Suk VR, Gew LT
    J Cosmet Dermatol, 2022 Nov;21(11):5409-5444.
    PMID: 35723888 DOI: 10.1111/jocd.15170
    BACKGROUND: Excessive exposure to ultraviolet radiation has harmful effects on human skin. At present, synthetic and mineral types of sunscreens used to protect against these harmful damages have been reported to cause negative health and environmental effects. The studies involving characterization and isolation of phytoconstituents from natural botanical sources are important to discover their potential beneficial effects on sunscreen development AIM: This systematic review provides specific and compiled information on the photoprotective properties of natural botanical sources for sunscreen development. The efforts in research and innovation are essential to ensure the safety and sustainability of plant-based sunscreen products.

    METHODS: In this review, a total of 35 articles were selected using the Scopus database based on the inclusion and exclusion criteria RESULT: The significant correlation between total phenolic content, total flavonoid content, antioxidant activities, and sun protection factor were shown in these studies which confirmed the potential benefits of natural plants in sunscreen development.

    CONCLUSIONS: In addition, natural botanical sources also exhibit excellent anti-tyrosinase, anti-aging, and anti-inflammatory activities. However, the biological activities of plants were dependent on the solvents used for extraction.

    Matched MeSH terms: Skin/radiation effects
  6. Md Radzi AB, Kasim SS
    Medicine (Baltimore), 2023 Jan 27;102(4):e32822.
    PMID: 36705376 DOI: 10.1097/MD.0000000000032822
    RATIONALE: We report a rare case of paraneoplastic bullous pemphigoid associated with mantle cell lymphoma.

    PATIENTS CONCERNS: The patient presented with 5 months' history of generalized skin itchiness, night sweat and loss of weight. The skin manifestations started over the foot and hand area. However, he started to developed tense blisters over the face, trunk and limbs 3 days prior to this admission.

    DIAGNOSES: The skin biopsy report showed subepidermal bullae, in which the immunofluorescence findings in keeping with bullous pemphigoid. The peripheral blood immunophenotyping was suggestive of mantle cell lymphoma. Hence, a diagnosis of paraneoplastic bullous pemphigoid associated with mantle cell lymphoma was made.

    INTERVENTIONS: The patient was initiated with a cytoreduction chemotherapy.

    OUTCOMES: Unfortunately, patient's condition deteriorated further due to neutropenic sepsis and he succumbed after 2 weeks of intensive care.

    LESSONS: Bullous pemphigoid associated with mantle cell lymphoma are very rare. The presentation of bullous pemphigoid led to the detection of mantle cell lymphoma. Early diagnosis and appropriate treatment is crucial in managing this aggressive type of the disease. Both, bullous pemphigoid and mantle cell lymphoma had a parallel clinical course which suggests a paraneoplastic phenomenon in this reported case.

    Matched MeSH terms: Skin/pathology
  7. Pettit JHS
    Singapore Med J, 1963 Mar;4(1):18-21.
    PMID: 13942989
    Attention is drawn to a number of recently described skin conditions and a number of new treatments which, in the opinion of the writer, warrant more extensive publicity
    Matched MeSH terms: Skin Diseases*
  8. Ting IPL, Tan HZ, Teo HG, Kiing JW, Muniandy P
    Med J Malaysia, 2023 Mar;78(2):184-189.
    PMID: 36988528
    INTRODUCTION: Granulomatous skin lesions can have various histopathological features leading to diagnostic confusion. The study aimed to determine the frequency and pattern of different granulomatous skin lesions.

    MATERIALS AND METHODS: This was a 5-year retrospective study done between April 2017 and March 2022 at Dermatology Department, Sarawak General Hospital. Subjects with a clinicopathological diagnosis of granulomatous diseases were included in the analysis.

    RESULTS: A total of 1718 skin biopsies were done during the study periods, with 49 (2.8%) confirmed granulomatous skin lesions. Most patients were aged 40-60 with a male predominance of 51%. Most of the skin biopsy samples were taken from the upper limb (36%). In this study, epitheloid granuloma was the commonest subtype (21, 43%) followed by suppurative granuloma (12, 24%), tuberculoid granuloma (8, 16%) and foreign body granuloma (5, 10%). The commonest aetiology of granulomatous skin lesions in our study was infections (30, 61%) followed by foreign body inoculation (8, 16%). Fungal infection was the most common infective cause, followed by cutaneous tuberculosis.

    CONCLUSION: The major cause of granulomatous dermatoses in developing countries is still infections, fungal and tuberculosis being the leading causes.

    Matched MeSH terms: Skin/pathology
  9. Mohd Zaid NA, Sekar M, Bonam SR, Gan SH, Lum PT, Begum MY, et al.
    Drug Des Devel Ther, 2022;16:23-66.
    PMID: 35027818 DOI: 10.2147/DDDT.S326332
    The skin is the largest organ in the human body, composed of the epidermis and the dermis. It provides protection and acts as a barrier against external menaces like allergens, chemicals, systemic toxicity, and infectious organisms. Skin disorders like cancer, dermatitis, psoriasis, wounds, skin aging, acne, and skin infection occur frequently and can impact human life. According to a growing body of evidence, several studies have reported that natural products have the potential for treating skin disorders. Building on this information, this review provides brief information about the action of the most important in vitro and in vivo research on the use of ten selected natural products in inflammatory, neoplastic, and infectious skin disorders and their mechanisms that have been reported to date. The related studies and articles were searched from several databases, including PubMed, Google, Google Scholar, and ScienceDirect. Ten natural products that have been reported widely on skin disorders were reviewed in this study, with most showing anti-inflammatory, antioxidant, anti-microbial, and anti-cancer effects as the main therapeutic actions. Overall, most of the natural products reported in this review can reduce and suppress inflammatory markers, like tumor necrosis factor-alpha (TNF-α), scavenge reactive oxygen species (ROS), induce cancer cell death through apoptosis, and prevent bacteria, fungal, and virus infections indicating their potentials. This review also highlighted the challenges and opportunities of natural products in transdermal/topical delivery systems and their safety considerations for skin disorders. Our findings indicated that natural products might be a low-cost, well-tolerated, and safe treatment for skin diseases. However, a larger number of clinical trials are required to validate these findings. Natural products in combination with modern drugs, as well as the development of novel delivery mechanisms, represent a very promising area for future drug discovery of these natural leads against skin disorders.
    Matched MeSH terms: Skin Diseases/drug therapy*
  10. Ch'ng CC
    Med J Malaysia, 2024 Mar;79(2):203-205.
    PMID: 38553927
    A balanced and diverse skin microbiome is pivotal for healthy skin. Dysregulation of the skin microbiome could disrupt the skin barrier function and result in the development of atopic dermatitis (AD), a common chronic and relapsing inflammatory skin disorder. Given the role that the skin microbiome plays in the initiation and maintenance of AD, maintaining a healthy skin microbiome is crucial for effective disease management. Specifically, current guidelines recommend emollients as the treatment mainstay in maintaining a functional skin barrier across disease severity. Emollient 'plus' or therapeutic moisturisers have recently emerged as the next-generation emollients that specifically aim to rebalance the skin microbiome and subsequently improve AD lesions. This article provides a quick overview of an emollient 'plus' or therapeutic moisturiser, discussing the clinical efficacy and tolerability of Lipikar Baume AP+M as a companion in AD management.
    Matched MeSH terms: Skin/pathology
  11. Jayalakshmi P, Looi LM
    Ann Acad Med Singap, 1996 Jul;25(4):522-5.
    PMID: 8893922
    A review of consecutive biopsies of adnexal tumours from 112 patients, received by the Department of Pathology, University of Malaya, over a 13-year period was undertaken. The age range of the patients was from 1 to 84 years, with a mean of 29.8 years. Thirty-three (32%) patients were under 20 years of age. There were 68 females with a male to female ratio of 1.0:1.5. In 105 cases (93.7%), the neoplasm was solitary. The tumour measured less than 2 cm in the largest dimension in 103 cases (92%). The common sites of occurrence were the head and neck region (59%) and extremities (25%). Neoplasms of hair follicle origin accounted for 63.4% (71 cases) of all lesions. Intra-tumour deposition of amyloid was noted in one of the 14 cases of trichoepithelioma.
    Matched MeSH terms: Skin/pathology; Skin Diseases/epidemiology; Skin Diseases/pathology*; Skin Neoplasms/epidemiology; Skin Neoplasms/pathology*; Carcinoma, Skin Appendage/epidemiology; Carcinoma, Skin Appendage/pathology*
  12. Gong P, Chin L, Es'haghian S, Liew YM, Wood FM, Sampson DD, et al.
    J Biomed Opt, 2014 Dec;19(12):126014.
    PMID: 25539060 DOI: 10.1117/1.JBO.19.12.126014
    We demonstrate the in vivo assessment of human scars by parametric imaging of birefringence using polarization-sensitive optical coherence tomography (PS-OCT). Such in vivo assessment is subject to artifacts in the detected birefringence caused by scattering from blood vessels. To reduce these artifacts, we preprocessed the PS-OCT data using a vascular masking technique. The birefringence of the remaining tissue regions was then automatically quantified. Results from the scars and contralateral or adjacent normal skin of 13 patients show a correspondence of birefringence with scar type: the ratio of birefringence of hypertrophic scars to corresponding normal skin is 2.2 ± 0.2 (mean ± standard deviation ), while the ratio of birefringence of normotrophic scars to normal skin is 1.1 ± 0.4 . This method represents a new clinically applicable means for objective, quantitative human scar assessment.
    Matched MeSH terms: Skin/blood supply; Skin/pathology*; Skin/chemistry
  13. Abu J, Wünschmann A, Redig PT, Feeney D
    J. Avian Med. Surg., 2009 Mar;23(1):44-8.
    PMID: 19530406
    A 32-year-old female American flamingo (Phoenicopterus ruber) was presented with a squamous cell carcinoma of the middle digit of the right foot. No clinical, hematologic, or radiologic evidence of metastasis was present. Salvage amputation of the digit resulted in complete cure, whereas previous electrosurgery and radiation therapy were unsuccessful. Three years later, another squamous cell carcinoma was diagnosed in the middle digit of the left foot. The digit was also amputated. Seven months after the second amputation, the bird did not have any recurrence or signs of metastasis.
    Matched MeSH terms: Skin Neoplasms/pathology; Skin Neoplasms/surgery; Skin Neoplasms/veterinary*
  14. Zainuddin A, Makpol S, Chua KH, Abdul Rahim N, Yusof YA, Ngah WZ
    Med J Malaysia, 2008 Jul;63 Suppl A:73-4.
    PMID: 19024990
    Validation of housekeeping gene is important for accurate quantitation of RNA in real time RT-PCR technique. The purpose of this study was to determine the validity of glyceraldehyde 3-phosphate dehydrogenase (GAPDH) as a housekeeping gene for quantitative real time RT-PCR assessment in human skin fibroblast senescent model. The cells were divided into different treatment groups; young (passage 4), senescent (passage 30), treatment with H2O2 and treatment with A-tocotrienol prior to H2O2 treatment. Our results showed that the expression level of GAPDH was constant with different treatment groups. Therefore, we concluded that GAPDH was suitable to be used as housekeeping gene in human skin fibroblast senescent model.
    Matched MeSH terms: Skin/enzymology*; Skin Physiological Phenomena*
  15. Mazlyzam AL, Aminuddin BS, Lokman BS, Isa MR, Fuzina H, Fauziah O, et al.
    Med J Malaysia, 2004 May;59 Suppl B:39-40.
    PMID: 15468808
    Our objective is to determine the quality of tissue engineered human skin via immunostaining, RT-PCR and electron microscopy (SEM and TEM). Culture-expanded human keratinocytes and fibroblasts were used to construct bilayer tissue-engineered skin. The in vitro skin construct was cultured for 5 days and implanted on the dorsum of athymic mice for 30 days. Immunostaining of the in vivo skin construct appeared positive for monoclonal mouse anti-human cytokeratin, anti-human involucrin and anti-human collagen type I. RT-PCR analysis revealed loss of the expression for keratin type 1, 10 and 5 and re-expression of keratin type 14, the marker for basal keratinocytes cells in normal skin. SEM showed fibroblasts proliferating in the 5 days in vitro skin. TEM of the in vivo skin construct showed an active fibrocyte cell secreting dense collagen fibrils. We have successfully constructed bilayer tissue engineered human skin that has similar features to normal human skin.
    Matched MeSH terms: Skin/pathology; Skin Transplantation/standards*
  16. Raman R, Arumainathan UD
    Can J Plast Surg, 2005;13(1):49.
    PMID: 24223005
    Presented here is a case of a pharyngocutaneous fistula which was closed primarily using a sternomastoid muscle flap, without skin coverage, thus obviating the need for a three-layered closure. Providing an intermediate cover was sufficient for the closure because the mucosal lining on the inside and the cutaneous covering on the outside grew using the muscle for support.
    Matched MeSH terms: Skin
  17. Abdul Karim A, Azlan A, Ismail A, Hashim P, Abd Gani SS, Zainudin BH, et al.
    J Cosmet Dermatol, 2016 Sep;15(3):283-95.
    PMID: 27041391 DOI: 10.1111/jocd.12218
    OBJECTIVE: Cocoa pods are abundant waste materials of cocoa plantation, which are usually discarded onto plantation floors. However, due to poor plantation management, the discarded cocoa pods can create suitable breeding ground for Phytophthora palmivora, which is regarded as the causal agent of the black pod disease. On the other hand, cocoa pods potentially contain antioxidant compounds. Antioxidant compounds are related to the protection of skin from wrinkles and can be used as functional cosmetic ingredients. Therefore, in this study, cocoa pods were extracted and to be used as active ingredients for antiwrinkles.

    METHODS: The active compounds in cocoa pod extracts (CPE) were screened using liquid chromatography-mass spectrometry (LC-MS). Fibroblast cells were used to determine the effective concentration of CPE to maintain the viability for at least 50% of the cells (EC50 ). The gel was tested by 12 panelists to determine the efficacy of CPE in gel form using Visioscan to reduce skin wrinkles and improve skin condition.

    RESULTS: CPE was detected to contain malic acid, procyanidin B1, rosmarinic acid, procyanidin C1, apigenin, and ellagic acid, all of which may contribute to functional cosmetic properties of CPE. The EC50 value of cocoa pod extracts was used to calculate the amount of CPE to be incorporated into gel so that the formulated product could reach an effective concentration of extract while being nonintoxicant to the skin cell. The results showed that CPE is potential ingredient to reduce wrinkles. Skin wrinkles reduced at 6.38 ± 1.23% with the application of the CPE gel within 3 weeks and significantly improved further (12.39 ± 1.59%) after 5 weeks. The skin hydration increased (3.181 ± 1.06%) after 3 weeks of the CPE gel application.

    CONCLUSION: Flavonoid compounds in CPE contributed to the functional cosmetic properties of CPE. The CPE which is nontoxic to skin cells help to reduce wrinkles on skin after 3 weeks of application. CPE can be used as the active ingredients in antiwrinkle products, and prolonged application may result in significant visual changes to the naked eyes.

    Matched MeSH terms: Skin/drug effects*; Skin Aging/drug effects*
  18. Amiri O, Salavati-Niasari M, Bagheri S, Yousefi AT
    Sci Rep, 2016 05 04;6:25227.
    PMID: 27143126 DOI: 10.1038/srep25227
    This paper describes cooperate the co-absorbance (CdS QDs) and the plasmonic core-shell nanoparticles (Ag@PVP) of dye synthesized solar cells in which CdS QDs and Ag@PVP are incorporated into the TiO2 layer. Cooperative nanoparticles show superior behavior on enhancing light absorption in comparison with reference cells. Cooperated DSSC exhibits the best performance with the power conversion efficiency of 7.64% which is superior to that of the free-modified DSSC with the PCE of 5%. Detailed studies offer an effective approach to enhance the efficiency of dye synthesized solar cells.
    Matched MeSH terms: Skin
  19. Khan NR, Wong TW
    Expert Opin Drug Deliv, 2016 09;13(9):1209-19.
    PMID: 27212391 DOI: 10.1080/17425247.2016.1193152
    OBJECTIVES: Skin drug retention is required in local treatment of skin cancer. This study investigated the interplay effects of ethosomes and microwave in transdermal drug delivery. Skin pre-treatment by microwave and applied with liquified medicine is deemed to 'cement' the skin thereby raising skin drug deposition.

    METHODS: 5-fluorouracil-loaded ethosomes were prepared and subjected to size, zeta potential, morphology, drug content, drug release and skin permeation tests. The molecular characteristics of untreated, microwave and/or ethosome-treated skins were examined by Fourier transform infrared and raman spectroscopy, thermal and electron microscopy techniques.

    RESULTS: The skin drug retention was promoted using larger ethosomes with negative zeta potentials that repelled anionic lipids of skin and hindered vesicle permeation into deep layers. These ethosomes had low ethanol content. They were less able to fluidize the lipid and defluidize the protein domains at epidermis to enlarge aqueous pores for drug permeation. Pre-treatment of skin by 2450 MHz microwave for 2.5 min further increased skin drug penetration and retention of low ethanol ethosomes and provided lower drug permeation than cases treated for 1.15 min and 5 min. A 2.5 min treatment might be accompanied by specific dermal protein fluidization via C=O moiety which translated to macromolecular swelling, narrowing of intercellular spaces at lower skin layers, increased drug retention and reduced drug permeation.

    CONCLUSION: Ethosomes and microwave synergized to promote skin drug retention.

    Matched MeSH terms: Skin/metabolism*; Skin Absorption*
  20. Haron DE, Chik Z, Noordin MI, Mohamed Z
    Iran J Basic Med Sci, 2015 Dec;18(12):1167-75.
    PMID: 26877845
    Transdermal preparations for testosterone are becoming popular because of their unique advantages such as avoidance of first-pass effect, convenience, improved bioavailability, and reduction of systemic side effects. A novel testosterone transdermal delivery system (TDDS) was developed using a palm oil base called HAMIN™ (a commercial product) and tested using in vitro and in vivo skin permeability test methods.
    Matched MeSH terms: Skin Tests
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