References: Hair growth and hair loss
humanitas.it
BACKGROUND: CHOP is considered to be the gold standard for patients with histologically aggressive non-Hodgkin's lymphoma both in limited and advanced stages. In order to determine the maximum tolerable dose of an intensified CHOP regimen, a dose-escalation study of CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisone) in patients with non-Hodgkin's lymphoma (NHL) was started. PATIENTS AND METHODS: With an increased fixed dose of doxorubicin at 75 mg/m2 instead of 50 mg/m2 on day 1 and standard doses of vincristine (1.4 mg/m2 on day 1) and prednisone (100 mg day 1 through 5), cyclophosphamide dose was escalated by increments of 250 mg/m2 in consecutive cohorts of at least three patients starting from 1000 mg/m2. Granulocyte-colony stimulating factor (G-CSF) support was added to the regimen starting from the dose-level inducing grade 4 neutropenia lasting more than five days in two patients. Dose limiting toxicity was defined as either the dose inducing grade 4 neutropenia lasting more than seven days despite the use of G-CSF, or grade 3-4 thrombocytopenia lasting more than seven days, or any grade 4 non-hematological toxicity other than alopecia. The dose-level below the one inducing dose-limiting toxicity was defined as maximum tolerable dose. All patients were treated on an outpatient basis. Dose-intensity parameters for single agent doxorubicin and cyclophosphamide as well as for the whole regimen were evaluated. RESULTS: Eighty-seven patients are evaluable over a four-year study period. At 1750 mg/m2 dose-level, G-CSF was added to the regimen according to described criteria. At the cyclophosphamide dose of 3000 mg/m2, dose-limiting hematological toxicity occurred in two patients, with one grade 4 thrombocytopenia and neutropenia and one grade 4 neutropenia lasting more than seven days. Thus, cyclophosphamide dose of 2750 mg/m2 was defined as maximum tolerable dose. CONCLUSIONS: CHOP intensification of approximately 1.8 times that of the standard regimen is feasible and safely administered on an outpatient basis with G-CSF support. Further investigation on the role of dose-intensity in the outcome of NHL should focus on the comparison of intensified CHOP regimen and standard CHOP or high-dose chemotherapy.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10416000&dopt=Abstract
J Am Vet Med Assoc. 1975 Oct 1;167(7):579-86.
Ataxia, depression, and dermatitis associated with the use of dichlorvos-impregnated collars in the laboratory cat.
Bell TG, Farrell RK, Padgett GA, Leendertsen LW.
Ataxia and depression developed in 21 of 50 (42%) laboratory cats wearing flea collars impregnated with 2,2-dichlorovinyl dimethyl phosphate (dichlorvos or DDVP) in a warm dry environment. Five (10%) of the cats died. Whole blood cholinesterase (ChE) activity was significantly (P smaller than 0.001) reduced in all cats and cervical dermatitis occurred in 37 (74%) of them.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1236842&dopt=Abstract
ic24.net
Androgen-related changes in hair growth represent something of a mystery. Through the action of dihydrotestosterone (DHT), hair growth is increased in specific areas of the body. Elevated levels of DHT produce a general increase over the larger part of the body, often accompanied by hair loss in specific areas of the scalp. Because of this 'opposite' effect, a genetic difference in the hair follicles is proposed. This view is supported through the success of the 'plug graft' transplantation technique. However, this is unsatisfactory, because transplantation procedures that should work well according to this theory, ultimately fail. There is an alternative 'mechanism', that demonstrates its origins in the prime function of hair as an insulator. This simple mechanism makes sense of all the recognized effects of DHT in the dermal system, and throughout the body. In DHT-related hair growth it can be directly observed. The implication is that DHT achieves its effects through a primary physiological action that can be easily tested given the necessary expertise. Given existing knowledge, such a proven action of DHT would have serious implications for further understanding of female susceptibility to autoimmune disease.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12376073&dopt=Abstract
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