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Query: UMLS:C0020672 (hypothermia)
 17,327 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Alopecia is a common side effect of cancer chemotherapy, especially in combination with regimens with doxorubicin (Adriamycin). The effect of scalp hypothermia in connection with chemotherapy was evaluated as hair protection in 61 women with disseminated breast carcinoma, where earlier treatment routines had caused wig-requiring alopecia in nearly all patients. The cooling was performed with a gel-helmet (Hypotherm Gel-Kap). Of the 61 patients, 47 (77%) had no or slight, not wig-demanding hair loss, and 14 (23%) had severe (wig-demanding) hair loss. Seven patients had liver dysfunction; in 5 of these severe hair loss was observed; 2 had slight hair loss. Eighty-three per cent of the patients with normal liver function had no hair loss. Treatment tolerance was found to be good, and side effects were minimal. The method is found to be simple, effective and inexpensive, though still not technically optimal.
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PMID:Scalp hypothermia in the prevention of chemotherapy-induced alopecia. 298 71

In order to prevent Adriamycin (ADM)-induced alopecia, scalp hypothermia with a Duncool-Cap frozen in a freezer at -70 degrees C was carried out. Of the 18 patients studied, one patient given total ADM doses of 240 mg developed alopecia of moderate degree, and another patient treated with ADM at a dose level of 50 mg developed mild alopecia. Alopecia could be almost completely prevented in 10 of the 11 patients given total ADM doses of 100 mg or less, and in 6 of the 7 patients given total doses of 200 mg or more.
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PMID:[Prevention of adriamycin-induced alopecia by scalp hypothermia with a deep-frozen Duncool-Cap]. 319 Feb 48

Adriamycin (Adriablastine), administered weekly at the dose of 5 mg/kg i.p. for 3 weeks in rats, produced a general decrease of vitality associated with a decrease of body weight, hypothermia, decreases of stroke volume and cardiac output. Hematocrit was decreased. Renal blood flow decreased whereas pulmonary blood flow increased. Mean blood pressure and heart rate remained unaffected. Biochemical evaluations revealed a decrease of blood urea and serum creatinine, which might be related to decreased food intake and protein metabolism. Morphological changes in the heart tissue could not be appreciated. Venoruton (HR), administered at the dose of 300 mg/kg p.o. daily for 28 days (5 days before and 23 days after the first injection of adriamycin), improved adriamycin-induced clinical signs and symptoms (loss of body weight, hypothermia and decreased general vitality). It tended to increase cardiac output and stroke volume.
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PMID:Protective effects of O-(beta-hydroxyethyl)-rutosides (HR) against adriamycin-induced toxicity in rats. 400 21

We have examined the effect of mildly hypothermic temperatures (22-32 degrees) on the cytotoxicity of Adriamycin, cis-diamminedichloroplatinum, bleomycin, and 1,3-bis(2-chloroethyl)-1-nitrosourea in Chinese hamster ovary cells in vitro. Over a dose range of Adriamycin, cell killing at 30 degrees was reduced by 1 to 3 orders of magnitude as compared to that at 37 degrees. cis-Diamminedichloroplatinum was also less cytotoxic at 30 degrees (0.4 to 1.2 orders of magnitude) than at 37 degrees. For bleomycin and 1,3-bis(2-chloroethyl)-1-nitrosourea, the reduction in cytotoxicity at 30 degrees in comparison to 37 degrees was less marked. All drugs were more toxic at 42.4-43 degrees than at 37 degrees. Precooling of cells for 2 hr at 30 degrees did not alter the cell killing caused by these drugs at elevated temperatures. These results suggest that a more selective anticancer effect might result if some chemotherapeutic drugs were administered during whole-body hypothermia and regional-local hyperthermia of tumor masses.
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PMID:Temperature dependence of adriamycin, cis-diamminedichloroplatinum, bleomycin, and 1,3-bis(2-chloroethyl)-1-nitrosourea cytotoxicity in vitro. 618 47

Full-thickness skin ulceration after extravasation of the commonly used vesicant chemotherapeutic agent doxorubicin hydrochloride (Adriamycin) is a significant source of morbidity in cancer patients. Controversy exists regarding the appropriate management of this extravasation injury. Current therapy includes local hypothermia, local clysis with hyaluronidase, and surgical excision of the involved tissue. Experimental data supporting local clysis with hyaluronidase are limited despite its current use clinically. The purpose of this study was to determine the efficacy of local infiltration with heparin sodium, hyaluronidase, and saline in the prevention of extravasation ulcers in a rat model. One hundred fifty male Sprague-Dawley rats (Upjohn, Milan, Italy) weighing 240 to 260 g, anesthetized with sodium pentobarbital, were used in this study. One hundred thirty rats received a 0.3-ml subcutaneous flank injection of doxorubicin (1.5 mg/ml) followed 15 minutes later by local infiltration with saline (n = 10), 25 to 100 units of heparin (n = 30), or 2.5 to 10.0 units of hyaluronidase (n = 90). Control animals received either subcutaneous doxorubicin (n = 10) or subcutaneous saline alone (n = 10). Volumes of the infiltration solution were less than 1 ml in all groups. All animals were sacrificed at 4 weeks; presence and size of ulcers at the injection site were quantified. Statistical analysis was performed using the two-sided Fisher's exact test and Student's t test. Control rats injected with saline alone did not develop ulceration in any case. All rats injected with doxorubicin alone developed ulcers with an average size of 33 mm2. Heparin infiltration decreased ulcer rate by 20 to 40 percent and decreased ulcer size by up to 67 percent. Local infiltration with hyaluronidase decreased ulcer rate by 50 to 60 percent (p < 0.05, two-sided Fisher's exact test) and decreased ulcer size by up to 50 percent ( p < 0.05, Student's t test). In this rat extravasation injury model, local infiltration with saline, heparin, or hyaluronidase decreased ulcer size after doxorubicin extravasation. This effect may be secondary to dilution of the extravasant. Additionally, local infiltration with hyaluronidase decreased ulcer rate by at least 50 percent. The mechanism of this phenomenon presumably relates to the ability of hyaluronidase to temporarily decrease the viscosity of the hyaluronic acid component of ground substance, thus allowing greater diffusion of doxorubicin into the surrounding tissue and therefore decreasing its local concentration.
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PMID:Prevention of adriamycin-induced full-thickness skin loss using hyaluronidase infiltration. 946 69

Extravasation of a chemotherapeutic agent is one of the most frequent complications in cancer patients. Full-thickness skin necrosis often occurs after extravasation. Alternative approaches to treatment are local wound care, elevation, and hypothermia. It was shown that heparin prevents skin necrosis. In this experimental study, the effects of heparin fractions on the prevention of skin necrosis were compared by applying an extravasation model of Adriamycin in rats. Forty Sprague-Dawley male rats weighing 250 to 300 g were used. A total of 0.3 ml doxorubicin hydrochloride was administered subcutaneously to all rats. Ten minutes later, in the control group (group I), 1 ml normal saline was administered subcutaneously. In the first experimental group (group II), 100 U per day heparin sodium was administered in a volume of 1 ml subcutaneously. In the second experimental group (group III), nadroparin calcium (5 anti-Xa U per kilogram per day) was administered. In the third and last experimental group (group IV), dalteparin sodium (5 anti-Xa U per kilogram per day) was administered. All drugs were administered for 2 weeks. Necrotic areas were measured 4 weeks later. Statistical analysis was performed using the Kruskal-Wallis analysis of variance and the Mann-Whitney test. Heparin fractions caused a decreased ulcer rate and size than controls ( < 0.05). There was no superiority among heparin fractions. The authors think that low-molecular weight heparins are preferred, considering the higher risk of bleeding with unfractionated heparin.
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PMID:Effects of heparin fractions on the prevention of skin necrosis resulting from adriamycin extravasation: an experimental study. 1235 79