Somesh Gupta

Efficacy and Safety of Intralesional 5-Fluorouracil in the Treatment of Keloids

Background: The treatment of keloids remains challenging. Cryosurgery and intralesional corticosteroids have been considered as the mainstream of therapy; however, the long-term use of corticosteroids has been found to be associated with serious side effects. Intralesional 5-fluorouracil (5-FU) has only been used in one study for the treatment of hypertrophic scars and keloids, mostly in combination with other treatments. The efficacy of 5-FU as an individual therapeutic agent is unknown. Objective: To evaluate the efficacy and safety of intralesional injections of 5-FU in the treatment of small keloid lesions. Methods: Twenty-four (12 male, 12 female) consecutive patients with keloids of 6 cm or less in their maximum dimension were treated with intralesional injections of 50–150 mg 5-FU per week for a maximum of 16 injections. Results: One third (8/24, 33.3%) of the patients showed more than 75% flattening of the keloid. Three out of 8 patients (with >75% flattening) required less than 16 (13, 13 and 15) injections for achieving the desired response. Overall, about half of the patients showed more than 50% flattening of the treated keloid. A correlation with the duration of keloid was found. Six (54.5%) out of 11 patients with keloids of ≤5 years duration, in contrast to only 2 (15.4%) out of 13 patients with keloids of >5 years duration showed more than 75% flattening (p < 0.05). Side effects included pain (all patients), hyperpigmentation (all patients) and ulceration (1 patient). No difference in peripheral blood count was noted before, during and after the therapy. Conclusion: Intralesional 5-FU can be safely used for the management of small keloids of shorter duration.

Modified technique of suction blistering for epidermal grafting in vitiligo.

Background Suction blister epidermal grafting is a useful modality of treatment of resistant and stable vitiligo; however, it requires expensive and heavy suction apparatus. This study is an attempt to develop a cheap and small apparatus which can be assembled in the physician’s own office.

Circulatory levels of antioxidants and lipid peroxidation in Indian patients with generalized and localized vitiligo

Vitiligo is an acquired skin disease, characterized by white areas on the skin due to loss of functional melanocytes. The pathogenesis of the disease is still unclear. Published data show the involvement of oxidative stress in the pathophysiology of vitiligo. A total of 30 vitiligo patients and 30 healthy controls were included in this study. We estimated serum levels of malondialdehyde (MDA), vitamins E and C, total antioxidant activity and whole blood levels of superoxide dismutase (SOD) and glutathione peroxidase (GPx) in vitiligo patients and controls. We found significantly higher levels of MDA and significantly lower levels of SOD, GPx, vitamins C and E and total antioxidant activity in vitiligo patients compared with controls. This study is a maiden attempt to report on antioxidant parameters of both generalized/localized-type Indian vitiligo patients. Our results confirmed that oxidative stress may play an important role in the pathogenesis of vitiligo and cause melanocyte damage in vitiligo.

HLA Alleles and Amino-Acid Signatures of the Peptide-Binding Pockets of HLA Molecules in Vitiligo

Vitiligo is a depigmenting disorder of the skin that is characterized by the loss of functional melanocytes from the lesional sites. Although the exact etiology is not understood, autoimmunity is thought to be a crucial deterministic factor. A recurring theme of several autoimmune disorders is the aberrant presentation of self-antigens to the immune system, which triggers downstream perturbations. Here we examine the role of alleles of HLA class I and class II loci to delineate vitiligo manifestation in two distinct populations. Our studies have identified three specific alleles, HLA-A*33:01, HLA-B*44:03, and HLA-DRB1*07:01, to be significantly increased in vitiligo patients as compared with controls in both the initial study on North Indians (N=1,404) and the replication study in Gujarat (N=355) cases, establishing their positive association with vitiligo. Both generalized and localized vitiligo have the same predisposing major histocompatibility complex alleles, i.e., B*44:03 and DRB1*07:01, in both the populations studied, beside the differences in the frequencies of other alleles, suggesting that localized vitiligo too may be an autoimmune disorder. Significant differences in the amino-acid signatures of the peptide-binding pockets of HLA-A and HLA-B α-chain and HLA-DR β-chain were observed between vitiligo patients and unaffected controls.

Intralesional immunotherapy with killed Mycobacterium w vaccine for the treatment of ano‐genital warts: an open label pilot study

Background  Intralesional immunotherapy with skin test antigens and vaccines has been found to be effective in the management of genital and extragenital warts.

Standard guidelines of care: Keloids and hypertrophic scars

Keloids and hypertrophic scars (HTS) are the result of overgrowth of fibrous tissue, following healing of a cutaneous injury, and cause morbidity. There are several treatment modalities which are useful for the management of keloids, though no single modality is completely effective. The most commonly used modalities are pressure, silicone gel sheet, intralesional steroids, 5-fluorouracil (5 FU), cryotherapy, surgical excision, and lasers. They may be used either singly or, as is done more commonly, in combinations. Any qualified dermatologist who has attained postgraduate qualification in dermatology can treat keloids and HTS. Some procedures, such as cryosurgery and surgical excision, may require additional training in dermatologic surgery. Most modalities for keloids, including intralesional injections and mechanical therapies such as pressure and silicone gel based products, can be given/prescribed on OPD basis. Surgical excision requires a minor operation theater with the facility to handle emergencies. It is important to counsel the patient about the nature of the problem. One should realize that keloid will only improve and not disappear completely. Patients should be informed about the high recurrence rates. Different modalities carry risk of adverse effects and complications and the treating physician needs to be aware of these and patients should be informed about them.

Intralesional cryosurgery using lumbar puncture and/or hypodermic needles for large, bulky, recalcitrant keloids

Abstract

TWICE WEEKLY 5 MG DEXAMETHASONE ORAL PULSE IN THE TREATMENT OF EXTENSIVE ALOPECIA AREATA

Thirty patients (20 males, 10 females) with widespread alopecia areata (25 extensive alopecia areata, 5 alopecia areata) for a mean period of 4.2 years were included in the study. All patients above 12 years were administered 5 mg dexamethasone oral pulse on two consecutive days every week. Three children (<12 years) received 2.5 mg to 3.5 mg dexamethasone oral biweekly pulse. Patients who had received treatment for a minimum period of 12 weeks were evaluated for terminal hair growth. Complete to excellent (75–95%) hair growth was observed in 16 (63.3%) patients. Growth was good (50–74%) in 2 cases and poor (<50%) in 3 (10%) cases. Six (20%) patients has no growth of terminal hair. Complete to excellent growth of hair was obtained after a mean period of 5.35 months (range 3–10 months). Relapse occurred in one case each after three and six months but hair regrew with re‐treatment.

Imiquimod 5% cream for the prevention of recurrence after excision of presternal keloids

Imiquimod 5% cream has been found to be effective and safe in preventing recurrence of keloids on earlobes after excision. We evaluated the efficacy and safety of imiquimod 5% cream in preventing the recurrence of presternal keloids after excision (3 keloids in 2 patients). After excision with radiofrequency, imiquimod 5% cream was applied once daily at bedtime for 8 weeks, and the defect was left to heal by secondary intention. In all the treated keloids, the defect healed in 6–8 weeks, and no recurrence was seen while on imiquimod application; however, all keloids completely recurred within 4 weeks of stopping imiquimod. Side effects were mild and acceptable in the form of burning and pain. Imiquimod did exert an antifibrotic action but it was short-lived.

Noncultured extracted hair follicle outer root sheath cell suspension for transplantation in vitiligo.

Background  Current noncultured cell‐based transplantation therapies for vitiligo largely involve shave skin biopsy for preparation of noncultured melanocyte suspension. As the overall proportion of melanocytes is low in the epidermis, these techniques require basal cell layer enrichment, which adds additional steps. We tried follicular unit extraction (FUE) to harvest hair follicles as a source of melanocytes.