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Transgenic Res 2002 Jun;11(3):241-7
Inducible, reversible hair loss in transgenic mice.
Telogen effluvium is a common type of hair loss. Although the morphological changes associated with telogen effluvium have been well characterized, the underlying molecular mechanisms remain unknown, and no animal models have been developed. We report here that inducible transgenic mice expressing high levels of the transcription factor, tTA (tetracycline transactivator), plus a reporter luciferase gene, show a reversible hair loss phenotype. Skin of these mice exhibits an increase in the number of hair follicles at the telogen phase, but a decreased number of follicles at the anagen phase. These changes resemble skin pathology seen in patients with telogen effluvium, which suggests that the inducible transgenic mice may be useful as a model for this disorder. Moreover, since overexpression of several other transgenes failed to cause skin pathology, the present findings also indicate types of molecular abnormalities that may cause reversible hair loss.
Dermatol Nurs 2001 Aug;13(4):269-72, 277-8
Hair loss: an overview.
Hair loss is a common problem in men and women. Correct diagnosis of hair disorders is complex and requires evaluation of clinical presentation, history, physical examination, and laboratory tests. Hair loss may be categorized as hair shaft abnormalities, permanent alopecia, or nonpermanent alopecia. Nonpermanent alopecia, the most common type, includes androgenetic alopecia, telogen effluvium, alopecia areata, and traction alopecia. The hallmark of this group is the possibility of complete regrowth with adequate treatment.
Cancer Pract 2001 Nov-Dec;9(6):283-9
Psychological sequelae and alopecia among women with cancer.
PURPOSE: This article reviews the relevant literature on treatment-induced alopecia in women with cancer and describes the development of a computer-assisted intervention to reduce distress associated with this side effect. DESCRIPTION OF PROGRAM: Alopecia has been cited as the most disturbing anticipated side effect by up to 58% of women preparing for chemotherapy, with 8% being at risk for avoiding treatment. Women with cancer who experience alopecia as a side effect, compared with women with cancer and no alopecia, report lower self-esteem, poorer body image, and lower quality of life. Although physicians' recommendations are the most influential factor on cancer treatment choice, body image and effects on sexuality are the next most influential factors. A study of a computer-imaging intervention, based on concepts related to guided imagery and anticipatory grief, has been launched in an effort to aid women in coping with anticipated treatment-related alopecia. RESULTS: While we are still waiting for final data collection and analysis from the computer intervention study, the feedback thus far has been positive. CLINICAL IMPLICATIONS: The intervention described here may prove to be effective in desensitizing women with cancer to hair loss and facilitating an adjustment to self-acceptance. As such, a higher quality of life during the difficult time of coping may be maintained. The development of a computer-imaging intervention offers an opportunity to integrate a standard psychosocial intervention, personalized for each patient, into the routine patient care in the oncology setting.
Support Care Cancer. 2003 Jun;11(6):371-7. Epub 2003 Mar 21.
Scalp hypothermia to prevent chemotherapy-induced alopecia is effective and safe: A pilot study of a new digitized scalp-cooling system used in 74 patients.
GOALS. The aim of this study was to examine the efficacy and safety of a new digitized, controlled, scalp-cooling system to prevent chemotherapy-induced alopecia. METHOD. Seventy-four female cancer patients who received 13 varying chemotherapy regimens were included in a nonrandomized pilot study. The Digni 2-3 with Dignicap system consists of a refrigerator unit and a control unit integrated into a mobile cabinet and connected to a tight-fitting cooling cap. This system maintains a constant scalp temperature of +5 degrees C for many hours. In this study, 60 patients were treated for ovarian cancer with either taxane or epirubicin combination chemotherapy. Eight patients with Hodgkin's lymphoma, three with breast cancer, two with endometrial cancer, and one with sarcoma were also included. Photo documentation and patient assessment of hair loss and discomfort were performed. RESULTS. In anthracycline-treated patients, total prevention of hair loss was observed, whereas hair loss in paclitaxel/docetaxel-treated patients was minimal to none. The combination of anthracycline and taxane resulted in more hair loss, but only three of six patients used a wig. Scalp cooling was generally very well tolerated; only two of 74 patients discontinued use of the cold cap due to discomfort. No scalp metastases occurred over a median follow-up period of 15 months. CONCLUSIONS. The digitized, controlled, scalp-cooling system represents an effective and safe device that should be clinically evaluated in a randomized trial and in studies using other chemotherapy regimens to determine optimal temperatures and durations of cooling for maximal efficacy.
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