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Objective:To investigate the influence of different types of wound dressings on red light transmittance.Methods:A treatment environment for wounds exposed to red light was simulated.Red light transmittance of four types of 19 dressings commonly used in clinic were detected respectively and compared.The transmittance was calculated as the ratio of the intensity of the red light through the dressing to the intensity of the injected red light.Results:The red light transmittance for each dressing was the following: (1)Cotton gauze and pad: 29.4% for one piece of coarse gauze, 10.5% for one cotton pad; (2)Oil dressings: 73.0%~79.1% for light-color oil dressings, 41.7% for dark-color oil dressings-Atrauman ?; (3)Hydrocolloid dressings: 87.8%~90.2%; (4)Foams: 74.7% for light-color ultra-thin foam-Mepilex ? sheet, 0.8% for black-color thicker foam dressings-Mepilex ? Ag dressing, and 20.5%-54.2% for the other foam dressings. Conclusions:The red light transmittance of hydrocolloid dressing, light-colored oil gauze dressing and light-colored ultra-thin foam dressing is higher, with less red light-blocking effect, and the dark-color or thicker dressings had more blocking effect, which showed different therapeutic effect on wound.Gauze and cotton pad have great blocking influence on red light transmittance, and are not suitable for temporary covering of wound during red light treatment.Hence, the effect of wound dressing on red light transmittance should be taken into account when the wound is treated with red light.
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Objective To analyze mutations in the PTCH1 gene in a pedigree with nevoid basal cell carcinoma syndrome (NBCCS).Methods Blood samples were collected from a 58-year-old male proband with NBCCS (Ⅱ 5),his brothers (Ⅱ 1 and Ⅱ 3) and son (Ⅲ4),and 50 unrelated healthy human controls.DNA was extracted from these blood samples.PCR and direct DNA sequencing were performed to determine mutation sites in the PTCH1 gene.According to the mutation sites,allele-specific oligonucleotide primers were designed and used to confirm the pathogenic mutations in this pedigree through PCR.Results A nonsense mutation (c.2137C),which leads to the substitution of CAG by TAG with the generation of a premature termination codon (Q714X),was identified in exon 14 in one allele of the PTCH1 gene in the proband and his son,but in none of the healthy human controls.Conclusion The nonsense mutation (c.2137C ＞ T) in the PTCH1 gene may be a specific mutation causing the clinical symptoms in the patient with NBCCS.
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Objective To evaluate the efficacy and safety of maintenance treatment with Qingpeng ointment in the prevention of recurrence of localized eczema.Methods Totally,197 patients with localized eczema were topically treated with halometasone cream for 2-4 weeks.The patients who achieved clinical cure were then randomly classified into two groups to receive maintenance treatment with Qingpeng ointment (Qingpeng group,n =69) or vitamin E-containing cream (emollient group,n =68).Patients were followed up for 8 weeks for the detection of recurrence after the discontinuation of maintenance treatment.Results During the follow up,the recurrence rate in the Qingpeng group was significantly lower than that in the emollient group (19.70％ vs.37.31％,x2 =5.06,P ＜0.05).Significant differences were also observed in the duration of remission between the Qingpeng group and emollient group ((43.92 ± 15.70) vs.(32.60 ± 14.40) days,t =2.23,P＜ 0.05).The incidence rate of adverse reactions was 1.45％ in the Qingpeng group during the maintenance treatment,and no adverse reactions were observed in the emollient group.Conclusion The maintenance treatment with Qingpeng ointment can delay the recurrence of localized eczema to some extent with a favorable safety.
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Objective To evaluate the efficacy and safety of Qingpeng ointment for the treatment of localized dermatitis and eczema in children.Methods Sixty-eight outpatient children with localized dermatitis or eczema were included in this study.All the patients were topically treated by Qingpeng ointment twice daily for a week,which was agreed by their patients.The efficacy was evaluated after the end of the treatment by lesion scores,and adverse reactions during the treatment were recorded.Results Of the 68 patients,61 completed the trial,7 withdrew from the trial because of worsened lesions,unfavorable effects and distrust of this drug.The total response rate was 81.4％ (31/51) in patients treated with Qingpeng ointment alone.Irritant reaction occured in only one case,but did not influence the treatment.Conclusion Qingpeng ointment displays a favorable efficacy and safety in the treatment of localized dermatitis and eczema in children.
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Objective To observe the response of and recurrence in patients with localized eczema after treatment with topical glucocorticoid alone or in combination with topical antibacterials.Methods Totally,217 outpatients with acute or subacute localized eczema were enrolled and randomly classified into two groups to be treated with topical corticosteroids combined with mupirocin cream (experiment group,n=191) or topical corticosteroids alone (control group,n =190) for two weeks.The patients who were cured at the end of the 2-week treatment were followed for 13 weeks for the observation of recurrence.Chi-square test and Student's t test were conducted to compare the cure and recurrence rates between different groups of patients.Results After two weeks of treatment,the cure rate in the experiment group was significantly higher than that in the control group (80.6％ vs.64.8％,x2 =6.576,P =0.01).Increased cure rate was also observed in patients with acute and subacute eczema receiving glucocorticoidCaspase14antibiotic combination therapy compared with those receiving corticosteroids alone.During the 13Caspase14week follow up,a lower recurrence rate was noted in the experiment group compared with the control group (15.6％ vs.33.8％,x2 =6.455,P ＜ 0.05).Further more,the patients experiencing relapse of eczema showed a higher proportion of hand eczema cases (29.4％ vs.13.0％,x2 =4.982,P ＜ 0.05)compared with those without relapse.Adverse reaction was mild in these patients,and no statistical difference was observed between the experiment group and control group (5.71％ vs.4.46％,x2 =0.176,P ＞ 0.05).Conclusion The combination with topical antibacterials may enhance the therapeutic effect of topical glucocorticoids on and reduce the recurrence of localized eczema.