Hong-Duo Chen

Southern Medical University, Shengcheng, Guangdong, China

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Publications (119)322.79 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Background: The relationship between serum hormone levels and adolescent acne is not fully clarified. Objective: To determine the relationship between levels of androstenedione, dehydroepiandrosterone sulfate (DHEA-S), testosterone, estradiol and 17α-hydroxyprogesterone (17-OHP) with adolescent acne in Northeast China. Methods: A transversal study included 242 acne cases and 188 controls. All data were analyzed using SPSS version 17.0. Results: Androstenedione and testosterone levels were significantly higher (p < 0.0001) in the cases than in the control group. In males, the difference in 17-OHP levels was statistically significant (p < 0.0001), as well as between mild and severe acne cases (p = 0.002). The estradiol level was significantly different (p < 0.0001) between cases and controls in females. Conclusion: Higher androstenedione and testosterone levels are significant risk factors in the occurrence of adolescent acne. A higher 17-OHP level aggravates the severity of male adolescent acne, while a higher estradiol level protects females against the onset of adolescent acne. © 2014 S. Karger AG, Basel.
    Dermatology (Basel, Switzerland). 11/2014;
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    ABSTRACT: Abstract is missing (Quiz).
    Acta dermato-venereologica. 11/2014;
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    ABSTRACT: This study aims to assess the impact of childhood vitiligo on the psychological status and quality of life of their parents, and to determine how this varies according to their children's disease condition. The study included 50 families of children with vitiligo (a total of 75 participants) and 50 families of normal children (a total of 79 participants). The psychosocial impact of the disease on parents was measured using the Self-rated Health Measurement Scale (SRHMS) and the Dermatitis Family Impact Questionnaire (DFI). SRHMS scores for parents of children with vitiligo were significantly lower than for parents with normal children. In addition, women had lower scores than men in the study group. The mean DFI score in affected families was higher than in unaffected families. Parents of children with vitiligo have significant psychological problems, and their quality of life is poorer than for parents of normal children. In conclusion, parents of children with vitiligo need as much care and attention as their affected children.
    Acta dermato-venereologica. 08/2014;
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    ABSTRACT: Abstract Objective: To assess the effect and safety of NB-UVB for vitiligo using an evidence-based approach. Methods: Randomized controlled trials (RCTs) on the treatment of vitiligo with NB-UVB were identified by searching PubMed and the Cochrane Library. The primary outcome was re-pigmentation degree. Results: A total of 7 RCTs involving 232 participants with vitiligo were included in this systematic review. The methodological qualities of included studies were generally moderate. Two trials compared narrow-band ultraviolet B (NB-UVB) with UVA control, showing no significant differences between two methods on the number of patients who achieved >60% re-pigmentation (RR=2.50, 95%CI: 0.11-56.97, P>0.05). Two trials compared NB-UVB with psoralens plus UVA (PUVA) control, and no difference was seen between the two treatments on the number of patients who achieved >50 re-pigmentation (RR=1.16, 95%CI: 0.64-2.11, P>0.05) or >75% re-pigmentation (RR=2.00, 95%CI: 0.89-4.48, P>0.05). Three trials compared NB-UVB with 308-nm excimer light/laser (EL) control, and again no significant difference was found between the two methods (P>0.05). The adverse events of NB-UVB in the included studies were slight and tolerated. Conclusion: NB-UVB showed equivalent efficacies to UVA, PUVA, or 308-nm EL control in the treatment of vitiligo. Side effects of NB-UVB were acceptable. More RCTs were needed to validate the results.
    Journal of Dermatological Treatment 08/2014; · 1.50 Impact Factor
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    ABSTRACT: Background Photodynamic therapy (PDT) has been used for acne, however, the efficacy and safety need to be determined. Objective To assess the effects and safety of PDT for acne using an evidence-based approach. Methods Randomized controlled trials (RCTs) on the treatment of acne with PDT were identified by searching PubMed, CNKI and the Cochrane Library. Results A total of 14 RCTs involving 492 patients were included. Photosensitizers included aminolevulinic acid (ALA), methylaminolevulinate (MAL), and indole-3-acetic acid (IAA). Light sources included red light, pulsed dye laser (PDL), intense pulsed light (IPL), long-pulsed dye laser (LPDL) and green light. The PDT protocols, including ALA + red light, ALA + PDL, ALA + IPL, MAL + red light, and MAL + LPDL, all showed great efficacy on inflammatory lesions. ALA + red light also had effects on non-inflammatory lesions and sebum secretion. ALA + IPL and IAA + green light significantly decreased sebum secretion. Triple treatment protocols showed great improvement on inflammatory and non-inflammatory lesions. Increasing ALA concentration, ALA incubation time, PDT sessions, dose of light source or using occlusion for photosensitizers, or a combination of other treatments with PDT may achieve greater efficacy. The common side effects of PDT were tolerable and transient. Conclusion Limited evidence indicates that PDT shows good efficacy in the treatment of acne with acceptable side effects. ALA + red light was shown to be the optimal choice. However, more RCTs are needed to determine the types and concentrations of photosensitizers and light sources, and the duration of light activation and incubation.
    European journal of dermatology: EJD 06/2014; · 1.95 Impact Factor
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    ABSTRACT: Adult colloid milium is a rare cutaneous deposition disorder that frequently involves areas of chronic sun exposure. The most common clinical presentation exhibits multiple, firm, and amber-colored papules that cluster to form large plaques. Histologically, there are masses of amorphous, eosinophilic material expanding the papillary dermis, and at times extending into the mid-dermis, with adjacent solar elastosis. When this disorder affects the face, disfiguring is of great concern and treatment is often sought. Attempts to safely remove colloid milium are generally unsuccessful. Dermabrasion has been reported to be effective. The present authors present a case with extensive facial colloid milium successfully ablated by the fractionated CO2 laser.
    Dermatologic Therapy 03/2014; 27(2):68-70. · 1.96 Impact Factor
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    ABSTRACT: Abstract is missing (Short).
    Acta Dermato-Venereologica 01/2014;
  • Dermatologic Therapy 01/2014; 27(1):52-4. · 1.96 Impact Factor
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    ABSTRACT: Syphilis, the "great imitator," with regard to skin diseases, is a chronic systemic infectious disease with a clinical course that waxes and wanes. The incidence of tertiary syphilis had decreased drastically these decades. We report a case of tertiary neurosyphilis presenting with moth-eaten bone lesions of the lower extremities. To the best of our knowledge, we have not seen such reports.
    Dermatologic Therapy 11/2013; 26(6):486-488. · 1.96 Impact Factor
  • European journal of dermatology : EJD. 06/2013;
  • JAMA dermatology (Chicago, Ill.). 06/2013;
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    ABSTRACT: Primary cutaneous amyloidosis (PCA), either familial or sporadic, poses a therapeutic challenge. We conducted an open trial using thalidomide to treat three cases of familial and three cases of sporadic PCA, at initial dose of 100 mg/day. Dosage adjustment was made according to improvement of symptoms or patient's own choice. All except one sporadic case experienced moderate to significant relief on the symptoms of itching, over an observational period of 8 weeks by visual analog score (from 8.08 ± 0.88 to 1.60 ± 0.68, on average) as well as clinical amelioration of symptoms. Side effects included fatigue, drowsiness, numbness, and facial and leg edema in some of the patients. From the present observation, it seems that thalidomide is a promising drug to treat PCA.
    Dermatologic Therapy 05/2013; 26(3):263-6. · 1.96 Impact Factor
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    Yan Wu, Yuan-Hong Li, Xing-Hua Gao, Hong-Duo Chen
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    ABSTRACT: Abstract Nanotechnology has been introduced into dermatology for years. Nanoemulsions (NEs) are promising drug delivery systems with practical applications for pharmaceutical, cosmetic and chemical industry applications. Herein, we provide an overview of the application of NEs in dermatology during the latest 5 years. We reviewed the antioxidants in NEs form, non-steroidal anti-inflammatory drug loaded by NE, NEs in photodynamic therapy, NEs in decontamination of radionuclides, antimicrobial NEs, NEs carrying lipids, NEs containing Octyl Methoxycinnamate, et al. NEs demonstrate good stability, stable physical and chemical properties. NEs are able to enhance the functionality and efficacy of active chemicals and natural ingredients. NEs exhibit great application potential in the field of dermatology.
    Journal of Drug Targeting 04/2013; · 2.77 Impact Factor
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    ABSTRACT: The sensitization and elicitation phases are involved in the immunopathogenesis of contact hypersensitivity (CHS). Langerhans cells (LCs) are believed to play pivotal roles in the sensitization stage of CHS. Local hyperthermia on skin induces the migration as well as maturation of epidermal LCs. Although fever-range whole body hyperthermia and local hyperthermia at 43°C prior to sensitization were reported to suppress CHS, the effects of different temperatures and the timing sequence of local hyperthermia on CHS have not been tackled. Local hyperthermia was applied to murine dorsal skin 3 days prior to, concurrent with, or 2 days post sensitization with fluorescein isothiocyanate (FITC) in BALB/c mice. Local hyperthermia temperatures at 37°C, 39°C, 41°C and 43°C were applied to mouse dorsal skin and the severity of CHS was calculated by measuring the swelling response of the challenged ears. Local hyperthermia at 39°C, 41°C and 43°C prior to sensitization reduced the severity of CHS, as compared with that at 37°C. The suppression of CHS was temperature dependant in that higher temperature had a stronger effect. On the contrary, the hyperthermia treatments, either concurrent with or post-sensitization, resulted in an enhanced temperature-dependant ear swelling response. The severity of murine CHS could be influenced by local hyperthermia at the sensitization stage in a temperature dependant manner. The temporal effect of local hyperthermia suggested a novel factor in interpreting the severity of allergic contact dermatitis.
    Chinese medical journal 04/2013; 126(8):1555-9. · 0.90 Impact Factor
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    ABSTRACT: The objective of the study was to investigate whether a topical antioxidant complex containing vitamins C and E and ferulic acid can protect solar-simulated ultraviolet irradiation (ssUVR)-induced acute photodamage in human skin. Twelve healthy female Chinese subjects were enrolled in this study. Four unexposed sites on dorsal skin were marked for the experiment. The products containing antioxidant complex and vehicle were applied onto 2 sites, respectively, for 4 consecutive days. On day 4, the antioxidant complex-treated site, the vehicle-treated site, and the untreated site (positive control) received ssUVR (5 times the minimal erythema dose). The fourth site (negative control) received neither ssUVR nor treatment. Digital photographs were taken, and skin color was measured pre- and postirradiation. Skin biopsies were obtained 24 hours after exposure to ssUVR, for hematoxylin and eosin and immunohistochemical staining. A single, 5 times the minimal erythema dose of ssUVR substantially induced large amounts of sunburn cell formation, thymine dimer formation, overexpression of p53 protein, and depletion of CD1a+ Langerhans cells. The antioxidant complex containing vitamins C and E and ferulic acid conferred significant protection against biological events compared with other irradiated sites. A topical antioxidant complex containing vitamins C and E and ferulic acid has potential photoprotective effects against ssUVR-induced acute photodamage in human skin. J Drugs Dermatol. 2013;12(4):464-468.
    Journal of drugs in dermatology: JDD 04/2013; 12(4):464-8. · 1.16 Impact Factor
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    ABSTRACT: BACKGROUND AND OBJECTIVES: Ultrapulse-mode (UPCO2 ) and superpulse-mode (SPCO2 ) fractional carbon dioxide lasers have been widely used to treat photo-aged skin, acne scars, and other skin conditions. This study was designed to compare the efficacy of new SPCO2 and UPCO2 lasers. MATERIALS AND METHODS: Seven healthy Chinese women received one pass of UPCO2 treatment on the left back and SPCO2 treatment on the right back. Pulse energies were 15 mJ at a density of 5%. Clinical outcomes and side effects were evaluated. Dermatoscope, in vivo reflectance confocal microscopy (RCM), and high-frequency ultrasonic equipment were used to observe skin responses noninvasively. Biopsies were taken for histologic evaluation. RESULTS: There was no significant difference between the two sides with regard to pain, edema, crust formation, erythema, or pigmentation. Histopathology showed that SPCO2 treatment could penetrate as deep as UPCO2 . The two modes have similar efficacy in stimulating the synthesis and remodeling of collagen and elastin according to hematoxylin and eosin and Verhoeff-iron-hematoxylin stains, and the ultrasonography images showed a remarkable increase in skin thickness and density on both sides. CONCLUSION: There is no significant difference between UPCO2 and SPCO2 treatment on back skin in clinical side effects, histologic findings, RCM, or ultrasonographic observation.
    Dermatologic Surgery 03/2013; · 1.87 Impact Factor
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    ABSTRACT: Background: Studies of lasers or intense pulsed light (IPL) on facial port wine stain (PWS) were frequently reported. Neck PWS was seldom concerned. Objective: This paper was aimed to identify the efficacy and safety of IPL in the treatment of neck PWS in Chinese patients. Methods: Twenty-nine Chinese patients with neck PWS were enrolled to receive IPL therapy for five sessions at an interval of 4- to 5 weeks. The parameters were set as cut-off filters of 560 nm, single pulse with pulse width of 6 ms and fluence of 20-24 J/cm2 or double pulse with pulse width of 4.5-5.0 ms, pulse delay of 15-30 ms, and fluence of 18-25 J/cm2. The efficacy was evaluated using subjective assessment and non-invasive measurement. The adverse effects were recorded. Results: Over 60% patients achieved more than 50% improvement and over 50% participants were very satisfied or satisfied with the treatment. The participants less than 18 years old achieved better efficacy than the participants over 18 years old. The red or purple lesions gained better response to IPL treatment than the pink lesions. Adverse effects were limited. Conclusion: IPL is effective in neck PWS of Chinese population. Adverse effects were minimal and acceptable.
    Journal of Cosmetic and Laser Therapy 03/2013; · 1.11 Impact Factor
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    ABSTRACT: Bullous pemphigoid (BP) has been reported to be associated with significant morbidities and a considerable mortality rate. We retrospectively studied 94 patients with BP in a Chinese tertiary medical center between 2005 and 2010 to evaluate the treatment of BP and prognostic factors for the mortality of BP. Cerebrovascular diseases (42.55%) and hypertension (39.36%) were the most common pre-existing conditions. Cardiopathy, diabetes and psoriasis pre-existed in 24.47%, 22.34% and 5.32%, respectively. Eighty of all 94 patients were treated by systemic corticosteroid at prednisone 0.3 mg/kg to 1.5 mg/kg daily. Patients were followed up for a minimum of 1 year or until the time of death. The mean duration of follow-up was 32 months. Kaplan-Meier analysis showed a 1-year survival probability of 76.6% (standard error 4.4%), with a 95% confidence interval (68.04%, 85.16%). Multivariate analysis revealed that increased age, bedridden condition, presence of cerebrovascular diseases at diagnosis, pre-existing cardiopathy and low serum albumin level were associated with the elevated 1-year mortality rate of BP.
    European journal of dermatology : EJD. 02/2013;
  • European journal of dermatology : EJD. 02/2013;

Publication Stats

510 Citations
322.79 Total Impact Points

Institutions

  • 2014
    • Southern Medical University
      Shengcheng, Guangdong, China
  • 2012–2013
    • Northeastern University (Shenyang, China)
      Feng-t’ien, Liaoning, China
  • 2004–2013
    • China Medical University (PRC)
      • Department of Dermatology
      Shenyang, Liaoning, China
  • 2011
    • General Hospital of the Air Force, PLA
      Peping, Beijing, China
    • Tianjin Medical University
      T’ien-ching-shih, Tianjin Shi, China
  • 2009
    • Mount Sinai Medical Center
      • Department of Dermatology
      New York City, New York, United States
    • Shenyang Medical College
      Feng-t’ien, Liaoning, China