Biomaterial Database

[Beneficial effect of 1,25-dihydroxyvitamin D3 in the treatment of myelofibrosis]. 1989

L Palomera, and I García Díez, and R Martínez

Two cases of myelofibrosis are reported, one corresponding to a chronic idiopathic myelofibrosis and another to an acute myelofibrosis or megakaryoblastic leukemia (AMGL). According to current knowledge, the origin of fibrosis in these disorders is a megakaryoblastic/megakaryocytic proliferation in the bone marrow. These megakaryocytic clonal populations result in an ineffective megakaryocytopoiesis and in an inability to store beta-thromboglobulin (BTG), platelet factor 4 (PlF4) and platelet derived growth factor (PDGF) in the alpha granules, whereby their release is increased. Both PDGF, a powerful stimulator of fibroblastic activity, and PlF4, a collagenase inhibitor, cooperate in the development of myelofibrosis. Owing to its action inducing cellular differentiation towards the monocytic-macrophagic line, which secretes collagenases and inhibits megakaryocyte proliferation, treatment with 1,25-dihydroxyvitamin D3 was attempted in both cases, 2.5 micrograms daily for 6 months. Satisfactory results were achieved.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D002117	Calcitriol	The physiologically active form of vitamin D. It is formed primarily in the kidney by enzymatic hydroxylation of 25-hydroxycholecalciferol (CALCIFEDIOL). Its production is stimulated by low blood calcium levels and parathyroid hormone. Calcitriol increases intestinal absorption of calcium and phosphorus, and in concert with parathyroid hormone increases bone resorption.	1 alpha,25-Dihydroxycholecalciferol,1 alpha,25-Dihydroxyvitamin D3,1, 25-(OH)2D3,1,25(OH)2D3,1,25-Dihydroxycholecalciferol,1,25-Dihydroxyvitamin D3,1 alpha, 25-dihydroxy-20-epi-Vitamin D3,1,25(OH)2-20epi-D3,1,25-dihydroxy-20-epi-Vitamin D3,20-epi-1alpha,25-dihydroxycholecaliferol,Bocatriol,Calcijex,Calcitriol KyraMed,Calcitriol-Nefro,Decostriol,MC-1288,MC1288,Osteotriol,Renatriol,Rocaltrol,Silkis,Sitriol,Soltriol,Tirocal,1 alpha,25 Dihydroxyvitamin D3,1,25 Dihydroxycholecalciferol,1,25 Dihydroxyvitamin D3,1,25 dihydroxy 20 epi Vitamin D3,Calcitriol Nefro,D3, 1 alpha,25-Dihydroxyvitamin,D3, 1,25-Dihydroxyvitamin,D3, 1,25-dihydroxy-20-epi-Vitamin,KyraMed, Calcitriol,MC 1288
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368	Aged	A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available.	Elderly
D055728	Primary Myelofibrosis	A de novo myeloproliferation arising from an abnormal stem cell. It is characterized by the replacement of bone marrow by fibrous tissue, a process that is mediated by CYTOKINES arising from the abnormal clone.	Agnogenic Myeloid Metaplasia,Bone Marrow Fibrosis,Chronic Idiopathic Myelofibrosis,Fibrosis, Bone Marrow,Idiopathic Myelofibrosis,Myelofibrosis,Myelofibrosis With Myeloid Metaplasia,Myeloid Metaplasia,Myelosclerosis,Myelosis, Nonleukemic,Agnogenic Myeloid Metaplasias,Bone Marrow Fibroses,Fibroses, Bone Marrow,Metaplasia, Agnogenic Myeloid,Metaplasia, Myeloid,Metaplasias, Agnogenic Myeloid,Metaplasias, Myeloid,Myelofibroses,Myelofibroses, Primary,Myelofibrosis, Primary,Myeloid Metaplasia, Agnogenic,Myeloid Metaplasias,Myeloid Metaplasias, Agnogenic,Myeloscleroses,Myeloses, Nonleukemic,Nonleukemic Myeloses,Nonleukemic Myelosis,Primary Myelofibroses