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Successful treatment of vitiligo with punch graft followed by outdoor topical psoralen plus ultraviolet A radiation

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Background and Objective – Punch grafting is a therapy for vitiligo but, to our knowledge, its combination with outdoor topical psoralen plus ultraviolet A radiation (PUVA) has not yet been studied. This study was designed to evaluate the efficacy of combination of punch graft and outdoor topical PUVA in recalcitrant vitiligo. Methods – The study was performed in Razi Hospital, Tehran in 2000. After obtaining informed consent, 20 patients with stable and refractory vitiligo (4 segmental, 8 focal and 8 generalized) underwent treatment with punch grafting. After 3 months, outdoor topical PUVA with 8-methoxypsoralen was instituted and continued for a maximum of 4 months. Results – After the 3 months of punch grafting, only nine patients experienced 33 – 66% repigmentation. Four months after starting topical outdoor PUVA, 13 patients experienced 90 – 100% and three patients 25 – 50% repigmentation. One focal and three generalized patients showed no response. Conclusion – The combination of punch grafting and topical PUVA may be an effective treatment in stable and intractable vitiligo, especially the segmental and localized types.
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Arch Iranian Med 2003; 6 (2): 86 – 90
Archives of Iranian Medicine, Vol 6, No 2, April 2003
86
SUCCESSFUL TREATMENT OF VITILIGO WITH
PUNCH GRAFT FOLLOWED BY OUTDOOR TOPICAL
PSORALEN PLUS ULTRAVIOLET A RADIATION
Zahra Hallaji MD
, Maryam Daneshpazhooh MD, Samad Rezai-Khiabanloo MD
Department of Dermatology, Tehran University of Medical Sciences, Tehran, Iran
Background and Objective Punch grafting is a therapy for vitiligo but, to our
knowledge, its combination with outdoor topical psoralen plus ultraviolet A radiation
(PUVA) has not yet been studied. This study was designed to evaluate the efficacy of
combination of punch graft and outdoor topical PUVA in recalcitrant vitiligo.
Methods The study was performed in Razi Hospital, Tehran in 2000. After obtaining
informed consent, 20 patients with stable and refractory vitiligo (4 segmental, 8 focal and 8
generalized) underwent treatment with punch grafting. After 3 months, outdoor topical PUVA
with 8-methoxypsoralen was instituted and continued for a maximum of 4 months.
Results After the 3 months of punch grafting, only nine patients experienced 33 – 66%
repigmentation. Four months after starting topical outdoor PUVA, 13 patients experienced
90 100% and three patients 25 50% repigmentation. One focal and three generalized
patients showed no response.
Conclusion – The combination of punch grafting and topical PUVA may be an effective
treatment in stable and intractable vitiligo, especially the segmental and localized types.
Keywords punch grafting topical PUVA vitiligo
Introduction
itiligo, a common acquired disease, is
manifested by circumscribed de-
pigmented patches. Histologically there
is an absence of cutaneous melanocytes.
1
Vitiligo can be classified into several types. The
localized type includes segmental and focal
vitiligo. Vitiligo vulgaris, acrofacial and universal
vitiligo are classified as the generalized type. Ten
percent of cases are localized and 90% are
generalized.
2
Treatment for vitiligo includes the use of
topical corticosteroids, calcipotriol, topical or
systemic methoxypsoralen, and oral psoralen plus
ultraviolet A radiation (PUVA), ultraviolet B
radiation (UVB), phototherapy, pseudocatalase
plus calcium plus UVB, vitamin supplementation,
melagenina, systemic corticosteroids, other
immunomodulators, and topical L-phenylalanine in
combination with UVA (PAUVA).
1, 2
However,
such treatments usually induce incomplete
repigmentation and occasionally the outcome is
poor.
1 3
Vitiligo patients, resistant to medical treatment,
in exposed areas represent a therapeutic problem to
physicians and an aesthetic problem to patients,
especially those with dark skin. Several surgical
procedures for the treatment of intractable lesions
have been reported to be effective, including thin
Thiersch grafts,
2
suction-blistered epidermis,
2 5
minigrafting,
6 8
and injection of noncultured and
various cultured cell-grafting techniques.
9, 10
All
employ melanocytes from the patient's normal skin
to cover depigmented patches.
11
Cutaneous
cultured autologous melanocyte grafting has
excellent results, but this technique is expensive
and time consuming. To achieve favorable results,
up to 8 months is necessary. The minigrafting
technique is relatively simple and can be used in an
outpatient clinic with simple instruments.
However, repigmentation due to minigrafting is
usually incomplete after 3 months to 4 years.
2, 3, 6–
V
•Correspondence: Z. Hallaji MD, Department of Dermatology,
Razi Hospital, Vahdat-e-Eslami Sq, 11996, Tehran, Iran. Fax: +98-
21- 5618989, E-mail: zhallaji@yahoo.com.
O
RIGINAL
A
RTICLE
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Archives of Iranian Medicine, Vol 6, No 2, April 2003
87
8
On the other hand, PUVA, either systemic or
topical, increases the number of melanocytes and
synthesis of melanin.
1, 4, 5
Topical outdoor PUVA is
a popular, practical and efficacious therapeutic
option for patients with limited vitiligo.
12
The
mechanism of PUVA rests on the synergistic
interaction of the two components (8-
methoxypsoralen and UVA light) in the skin.
13
We
conducted this study to evaluate the efficacy of
combining punch grafting and topical outdoor
PUVA in vitiligo patients.
Patients and Methods
Twenty Iranian patients (12 women and 8 men,
in the age renge of 13 40 years) with stable
vitiligo underwent minigrafting in Razi Hospital,
Tehran in 2000. The disease was segmental in four,
focal in eight and generalized in eight cases. All
subjects were otherwise healthy. They had been
resistant to systemic or topical methoxypsoralen
and topical steroid therapies for at least 1 year.
They showed neither spread of existing lesions nor
development of new lesions during the previous 6
months. Patients under 12 years of age, pregnant
and lactating women, and those with a history of
photosensitivity or skin cancer were excluded from
the study. After obtaining informed consent, one
patch was grafted in each patient without previous
minigrafting test.
The grafting site was prepared by infiltration of
1% lidocaine without epinephrine followed by
perforation of recipient holes of 1.5 mm deep and
2.5 mm apart from each other. Minigrafts were
harvested from the gluteal region for the trunk and
limb regions, and the back of the ear for the face
lesions; punches of 2 mm in size were placed
within the recipient holes. Dressings were removed
2 weeks later and all subjects observed two
sessions per month for 3 months. Repigmentation
rate was scored visually. Graft rejection was
determined as necrosis of the grafs in the recipient
holes.
All subjects applied 8-methoxypsoralen (0.1%
alcoholic solution) and received sunlight for three
sessions per week, for a maximum of 4 months.
The first exposure time was 15 seconds and was
increased by 10 seconds per session until the
appearance of a slight erythema. Treatment was
continued until complete repigmentation occurred,
or for 4 months. If no evidence of repigmentation
was observed by this time, treatment was
discontinued and repigmentation was scored. Data
are presented as mean ± standard deviation.
Results
Three months after punch grafting, only nine
(45%) patients experienced 33 66% repigmen-
tation (partial repigmentation). The onset of
repigmentation was between 28 and 45 days (35.3
± 7.5). Further repigmentation stopped between 45
and 75 days (61.7 ± 9.0). Four months after the
institution of topical outdoor PUVA, 13 patients
experienced 90 100% repigmentation (complete
Figure 1. Photograph of patient No. 8 showing a vitiligo lesion on the forehead (20 cm
2
): A) before
grafting; and B) 7 months after grafting, showing 90% repigmentation.
A
B
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Archives of Iranian Medicine, Vol 6, No 2, April 2003
88
response) and three patients 25–50% repigmen-
tation (partial). Four patients showed no response.
The mean onset of repigmentation was at 25.6
sessions (SD, 5.9 sessions). The results are
summarized in the Table.
Nine patients who responded to punch grafting
(33–66% repigmentation) showed complete
repigmentation after PUVA. Punch grafting alone
was unsuccessful in four of the patients who
responded completely and in the three patients who
responded partially (25–50%) to the combination
of punch grafting and PUVA. Three (75%)
responders had truncal, seven (70%) facial and
three (50%) limb lesions. All subjects of segmental
type, six (25%) subjects of localized type and three
(38%) subjects of generalized type experienced
90–100% repigmentation (Figures 1 and 2).
The Kobner phenomenon was observed in three
patients (2 patients with varying shape and size of
recipient facial area and 1 in donor site).
Cobblestoning was observed in 11 patients, but
spontaneously resolved between 7 and 18 months
later. Graft rejection was observed in only 14 (3%)
out of 445 grafts.
Discussion
Falabella pioneered the use of small auto-
transplant for the treatment of four patients with
segmental vitiligo in 1983.
7, 8
In 1988, he treated 22
patients with localized vitiligo after three to five
minigraft tests by this method. Thirteen patients
obtained 90 – 100% repigmentation.
8
Westerhof et al also observed satisfactory
results using minigrafting in stable leukoderma.
6
Boersma et al evaluated autologous
minigrafting followed by UVA (10 J/cm
2
) twice a
week in stable vitiligo vulgaris and found it
effective in a selected group of patients. The
results of 19 patients were analyzed, showing 80 to
99% repigmentation in 14 lesions, 50 to 80%
repigmentation in 10 lesions, and zero to 50%
repigmentation in 12 lesions.
2
Although minigrafting can be an effective
treatment in vitiligo, failure to achieve complete
repigmentation in a high percentage of patients
remains a major drawback.
2, 3, 6 – 8
The potential of PUVA to increase the number
of melanocytes prompted us to use autologous
minigrafting followed by topical outdoor PUVA in
20 patients with stable vitiligo (segmental,
vulgaris, and focal). We did not perform a
minigraft test.
In the first phase of our study, only nine
patients showed partial repigmentation (33 66%)
by minigrafting. Repigmentation progressed
mainly during the first 2 months and remained
stable afterward, despite the sunny climate.
The addition of topical PUVA increased the
rate of repigmentation significantly. Repigmen-
tation reached 90 100% in 13 patients (including
those patients who were responding to
minigrafting). Three nonresponders to minigrafting
showed 25 50% repigmentation with the addition
Table.
Demographic
and results
of 20 patients
with vitiligo treated with punch graft and topical PUVA.
No. of
patient
Age/
sex
Size of
treated
lesion
(cm
2
)
Type
(disease)
Area
Repig. onset after
graft/the end of
repig. after graft
Repig.
after
graft (%)
Repig. after
PUVA (%)
Skin
type
Rejected
graft
1 16/F 75 Segmental Trunk 45/60 50 90 4 8
2 20/M 9 Generalized Face 45/60 33 99 3
3 16/F 6 Focal Lt foot 35/60 33 100 2
4 17/M 4 Generalized Face —/— 99 3
5 25/F 8 Generalized Rt hand 30/75 33 99 4 1
6 15/M 4 Focal Face —/— 99 2
7 23/M 6 Focal Face 30/60 66 99 3 1
8 40/F 20 Segmental Face 30/60 33 95 2
9 27/M 15 Focal Trunk 28/60 66 90 3 2
10 21/F 8 Segmenta Trunk —/— 99 2
11 15/F 3 Focal Rt shin 45/75 75 33 3
12 22/M 8 Segmenta Face 30/60 66 99 4
13 13/F 6 Focal Face —/— 95 2
14 13/F 3 Focal Trunk —/— 3
15 27/F 8 Generalized Lt wrist —/— 4
16 25/F 9 Generalized Lt wrist —/— 3
17 14/F 8 Generalized Lt hand —/— 3
18 24/F 10 Generalized Lt hand —/— 50 3 2
19 17/M 2.25 Focal Face —/— 50 2
20 19/M 7 Generalized Face —/— 25 2
Lt = Left; Rt = right; Repig. = repigmentation.
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Archives of Iranian Medicine, Vol 6, No 2, April 2003
89
of PUVA, while four patients (3 generalized, and 1
localized) showed no repigmentation despite the
addition of PUVA.
Fitzpatrick skin type IV patients responded
better than other types. Also, the response rate was
higher on the trunk, followed by the face and
extremities. Segmental vitiligo responded better
than focal type. The least responsive group was the
generalized type. Complete response to PUVA in
four nonresponders to minigrafting and partial
response in three nonresponders was an interesting
finding in our study. This can be explained by the
effect of methoxypsoralen plus UVA on the
donor’s melanocytes.
Kobner phenomenon was seen in two patients
after minigrafting at recipient sites and in another
one at the donor site. Cobblestoning was seen in
55% of patients. Repigmentation was nearly
uniform.
After 1 year of follow-up, no hyperpigmen-
tation was seen and only cosmetically acceptable
mild cobblestoning was noted in 7 patients and
resolved in others. Other possible side effects such
as infection, hypertrophic scarring, keloids,
persistent pigmentary changes and necrosis of the
grafts were not seen. The combination of punch
grafting and topical PUVA was an effective
treatment in a small group of stable and intractable
vitiligo, especially segmental and localized types.
We suggest further studies to evaluate whether
earlier institution of PUVA after minigrafting leads
to an earlier satisfactory response. Also, we
suggest comparing this method with other
techniques such as Thiersch grafting and
suctioning blister epidermis in combination with
PUVA or narrow-band UVB phototherapy in
further studies.
References
1 Grimes PE. Therapies for vitiligo. In: Millikan LE,
ed. Drug Therapy in Dermatology. 1st ed. New York:
Marcel Dekker; 2000: 339 – 57.
2 Boersma BR, Westerhof W, Bos JD. Repigmentation
in vitiligo vulgaris by autologous minigrafting: results
in nineteen patients. J Am Acad Dermatol. 1995; 33:
990 5.
3 Falabella R. Surgical techniques for repigmentation.
In: Robinson JK, Arndt KA, LeBoit PE, et al, eds.
Atlas of Cutaneous Surgery. 1st ed. Philadelphia: WB
Saunders; 1996: 175 84.
4 Suga Y, Butt KI, Takimoto R , et al. Successful
treatment of vitiligo with PUVA-pigmented
autologous epidermal grafting. Int J Dermatol. 1996;
35: 518 – 22.
5 Ai-Young L, Jeong-Hoon J. Autologous epidermal
grafting with PUVA-irradiated donor skin for the
treatment of vitiligo. Int J Dermatol. 1998; 37:
551 4.
6 Westerhof W, Nieuweboer-Krobotova L, Mulder PG,
et al. Left-right comparison study of the combination
of fluticasone propionate and UV-A vs either
fluticasone propionate or UV-A alone for the long-
term treatment of vitiligo. Arch Dermatol. 1999; 135:
1061 – 6.
7 Falabella R. Repigmentation of segmental vitiligo by
autologous minigrafting. J Am Acad Dermatol. 1983;
9: 514 – 21.
8 Falabella R. Treatment of localized vitiligo by
autologous minigrafting. Arch Dermatol. 1988; 124:
1649 55.
9 Gauthier Y, Surleve-Bazeilla JE. Autologous grafting
with noncultured melanocytes: a simplified method
for treatment of depigmented lesions. J Am Acad
Figure 2. Photograph of patient No. 1 showing a vitiligo lesion on the trunk (75 cm
2
): A) before
grafting; and B) 7 months after grafting, showing 90% repigmentation.
A
B
A
B
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Successful Treatment of Vitiligo with Punch Graft and PUVA
Archives of Iranian Medicine, Vol 6, No 2, April 2003
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Dermatol. 1992; 26: 191 – 4.
10 Lerner AB. Repopulation of pigment cells in patients
with vitiligo. Arch Dermatol. 1988; 124: 1701 – 2.
11 Marwa A, Mohamed B. Efficacy of noncultured
melanocytes transplantation versus minigrafting in
vitiligo. Gulf J Dermatol Venerol. 2001; 2: 25 35.
12 Grimes PE. Therapeutic trends for the treatment of
vitiligo. J Cosm Dermatol. 2002; 6: 21 – 5.
13 Shephard SE, Langguth P, Panizzon RG.
Pharmacokinetic behavior of sublingually
administered 8-methoxypsoralen for PUVA therapy.
Photodermatol Photoimmunol Photomed. 2001; 17:
11 21.
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... patients. 33,36,39,40,42,45 Mean pigmentspread was assessed in 2 studies and ranged from 3.9-5.4 mm. ...
... The eligible studies showed high heterogeneity in terms of outcome measures, transplantation techniques, stability of vitiligo, phototherapy regimen, quality and follow-up duration. Most studies (n=25) included different subtypes of vitiligo, such as non-segmental and segmental vitiligo, but in only 14 of 39 studies [13][14][15]18,21,24,26,28,33,36,37,42,43,45 the results per subtype were provided. Basically, melanocyte transplantation is more effective in patients without a persisting auto-immunity against melanocytes, such as in segmental vitiligo. ...
Article
Vitiligo is frequently treated with the combination of phototherapy and melanocyte transplantation. However, the additional benefit of phototherapy is unclear. Moreover, the optimal type and regimen of phototherapy is unknown. The objective of this systematic review was to identify whether phototherapy improves the outcome of melanocyte transplantation in vitiligo. We searched and screened for eligible studies in the databases of MEDLINE, EMBASE and CENTRAL. We included all clinical studies investigating melanocyte transplantation combined with phototherapy. After screening and selection of abstracts and full‐texts, we found 39 eligible clinical studies with 1624 patients. The eligible studies investigated several phototherapy modalities, such as NBUVB (n=9), PUVA (n=19), UVA (n=1), MEL (n=4) and active sunlight exposure (n=9). Four studies directly compared phototherapy versus no phototherapy and two studies confirmed the benefit of phototherapy for melanocyte transplantation. We found no significant differences in repigmentation in studies directly comparing phototherapy modalities. The overall quality of the studies was moderate to poor and high heterogeneity between studies was found. We found limited evidence that phototherapy improves the outcome of melanocyte transplantation in vitiligo. There is insufficient evidence to recommend a specific type or regimen of phototherapy. More studies should be performed investigating the additional benefit of different phototherapies and the preferred moment of phototherapy. This article is protected by copyright. All rights reserved.
Article
Importance: Surgical interventions are a key part of the therapeutic arsenal, especially in refractory and stable vitiligo. Comparison of treatment outcomes between the different surgical procedures and their respective adverse effects has not been adequately studied. Objective: To investigate the reported treatment response following different surgical modalities in patients with vitiligo. Data sources: A comprehensive search of the MEDLINE, Embase, Web of Science, and Cochrane Library databases from the date of database inception to April 18, 2020, was conducted. The key search terms used were vitiligo, surgery, autologous, transplantation, punch, suction blister, and graft. Study selection: Of 1365 studies initially identified, the full texts of 358 articles were assessed for eligibility. A total of 117 studies were identified in which punch grafting (n = 19), thin skin grafting (n = 10), suction blister grafting (n = 29), noncultured epidermal cell suspension (n = 45), follicular cell suspension (n = 9), and cultured epidermal cell suspension (n = 17) were used. Data extraction and synthesis: Three reviewers independently extracted data on study design, patients, intervention characteristics, and outcomes. Random effects meta-analyses using generic inverse-variance weighting were performed. Main outcomes and measures: The primary outcomes were the rates of greater than 90%, 75%, and 50% repigmentation response. These rates were calculated by dividing the number of participants in an individual study who showed the corresponding repigmentation by the total number of participants who completed the study. The secondary outcomes were the factors associated with treatment response to the surgical intervention. Results: Among the 117 unique studies and 8776 unique patients included in the analysis, rate of repigmentation of greater than 90% for surgical interventions was 52.69% (95% CI, 46.87%-58.50%) and 45.76% (95% CI, 30.67%-60.85%) for punch grafting, 72.08% (95% CI, 54.26%-89.89%) for thin skin grafting, 61.68% (95% CI, 47.44%-75.92%) for suction blister grafting, 47.51% (95% CI, 37.00%-58.03%) for noncultured epidermal cell suspension, 36.24% (95% CI, 18.92%-53.57%) for noncultured follicular cell suspension, and 56.82% (95% CI, 48.93%-64.71%) for cultured epidermal cell suspension. The rate of repigmentation of greater than 50% after any surgical intervention was 81.01% (95% CI, 78.18%-83.84%). In meta-regression analyses, the treatment response was associated with patient age (estimated slope, -1.1418), subtype of vitiligo (estimated slope, 0.3047), and anatomical sites (estimated slope, -0.4050). Conclusions and relevance: The findings of this systematic review and meta-analysis suggest that surgical intervention can be an effective option for refractory stable vitiligo. An appropriate procedure should be recommended based on patient age, site and size of the lesion, and costs.
Article
There are a number of dermatosurgery techniques available to achieve repigmentation of vitiligo, such as suction blister grafting, split-thickness skin grafting, punch grafting, follicular grafting, cultured-melanocytes transplantation, and noncultured-melanocytes transplantation. Each method has advantages and disadvantages. As there are no specific data available from the prospective studies in this field it is uneasy to recommend which surgical approach to vitiligo offers the best result. According to a systematic review by Njoo et al.,(17) suction blister and split-thickness skin grafting have the highest rates of success (87%), while the average success rates for other methods varied from 13% to 53%. Punch grafting has the highest rate of adverse effects, including cobblestoning appearance (27%) and scar formation (40%) in the donor site. Accordingly, it is also mandatory to appropriately select vitiligo patients in order to achieve a complete and permanent repigmentation.
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Vitiligo is a cosmetically disfiguring and emotionally exhausting disease that affects all races and ethnic groups. In the past few years, significant advances have been made in treating this challenging condition. This article reviews considerations in choosing a therapy, provides details regarding various practical and efficacious therapies, and outlines recent therapeutic advances.
Article
Autologous minigrafting has been reported as an effective method for repigmenting diverse types of stable leukoderma. A group of 22 patients with localized vitiligo, 17 segmental and five focal, who are under treatment with this method, are described. Thirteen patients attained a 90% to 100% repigmentation, two others achieved a partial improvement, and five patients had a positive test area indicating the possibility of repigmentation by means of this procedure. Only two patients had a negative test with minigrafts and, consequently, they were left untreated. Autologous minigrafting is suggested as an alternative for treating localized vitiligo, particularly when other medical therapeutic attempts have failed in repigmenting this often refractory condition.
Article
Segmental vitiligo (SV) shows distinct clinical, physiologic, and therapeutic characteristics as opposed to those seen in generalized vitiligo (GV). Three patients affected with SV, a relatively unresponsive dermatosis, were successfully repigmented by autologous minigrafting. The achieved results demonstrate a new therapeutic approach for SV.
Article
Minigrafting is a successful therapy for localized vitiligo but has never been reported for vitiligo vulgaris. Our purpose was to evaluate the efficacy of minigrafting in vitiligo vulgaris. In 59 patients with stable vitiligo vulgaris, a minigraft test was done by implanting two minigrafts in the lesion to be grafted. Patients were selected for grafting when spread of pigment was observed within 3 months. The rate of repigmentation was evaluated by digital image analysis. Twenty-three patients (36 lesions), of 24 with a positive minigraft test, were grafted. The results of 19 patients were analyzed, showing 80% to 99% repigmentation in 14 lesions, 50% to 80% repigmentation in 10 lesions, and zero to 50% repigmentation in 12 lesions. Time of observation varied from 3 to 12 months after grafting. Best results were observed after 9 to 12 months. In all patients with a positive Koebner phenomenon depigmentation of the minigrafts developed. Autologous minigrafting is an effective therapy for stable vitiligo vulgaris in a selected group of patients.
Article
The methoxypsoralen-ultraviolet A-light (PUVA)-induced pigmented epidermal grafting procedure appears to be a more effective treatment for vitiligo than similar treatments presently available. This finding was based on: 1) a more vigorous and completely homogeneous repigmentation was observed in the vitiliginous area and 2) that the treatment was safe, easy, inexpensive, and not time-consuming (approximately 3-4 hours), thus making it a suitable outpatient clinic treatment procedure for vitiligo patients. Twenty-eight patients with amelanotic depigmented lesions that had been refractory to conventional therapy were treated using suction blisters from autologous epidermal sheets. These had 8-methoxypsoralen (8-MOP) solution applied and had been exposed to ultraviolet A light (topical PUVA) in order to stimulate melanogenesis. Successful repigmentation was obtained after transplantation in all patients with segmental and localized vitiligo. The most homogeneous repigmentation was obtained within 3 months after grafting. This novel procedure is an excellent tool by which to treat segmental and localized vitiligo lesions that have failed to respond to other therapies.
Article
Epidermal autografting has been used to treat vitiligo. The pigmentation achieved at the recipient site can be variegated and incomplete compared with that of the surrounding normal skin, and sometimes remains that way for a fairly long time. We investigated whether the clinical results from epidermal autografting are related to a change in the number of melanocytes. This was performed by counting the number of melanocytes in the epidermis obtained from biopsy and suction with and without psoralen plus UVA (PUVA) exposure of the donor sites before grafting. The numbers of melanocytes in the epidermis were counted after staining with dopa. The epidermis from suction and biopsy was included. The biopsied specimen was treated with NaBr for dermo-epidermal separation before staining, whereas the epidermis obtained from suction was stained directly. The epidermis obtained from suction contained 40-60% of the number of melanocytes found in the biopsied epidermis. Melanocytes around the hair follicles seemed to be omitted. Treatment with PUVA 10-21 times caused the number of melanocytes to increase by 1.5-2 times the normal level with a promising clinical result. The preparation of donor sites with PUVA before the treatment of vitiligo by epidermal autografting induced an increased number of melanocytes and improved the clinical result.
Therapies for vitiligo Drug Therapy in Dermatology
  • Pe Grimes
Grimes PE. Therapies for vitiligo. In: Millikan LE, ed. Drug Therapy in Dermatology. 1st ed. New York: Marcel Dekker; 2000: 339 – 57.