Search PubMed⌕ Search

PubMed · 12806951

[Malignancy-associated hypercalcemia].

Abstract

Bisphosphonates (BPs) constitute a major advance in the treatment of malignancy-associated hypercalcemia(MAH). BPs correct MAH through the mechanisms of inhibition of osteoclastic bone resorption. Although BPs are more potent agents than calcitonin in the treatment of MAH, anti-hypercalcemic effect of BPs appears more slowly than that of calcitonin. Therefore, combination therapy with BP and calcitonin is favorable in the treatment of MAH showing hypercalcemic crisis. Zoledronate, most potent bisphosphonate, is apparently superior to pamidronate, standard bisphosphonate, in the treatment of MAH. BP therapy develops no serious adverse effects (i.e. acute renal failure) in clinical practice. However, attention should be paid to BP-induced pyrexia and transient pain increase.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Shoji Oura. 2003. [Malignancy-associated hypercalcemia].. https://pubmed.ncbi.nlm.nih.gov/12806951/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

Two members of the bisphosphonate class of drugs: a zwitterion and a molecular compound.

The compounds studied in this paper, viz. (1-ammonio-1-phosphonopropyl)phosphonate, C(3)H(11)NO(6)P(2), (I), and 1-(acetylamino)propylidene-1,1-bisphosphonic acid dihydrate, C(5)H(13)NO(7)P(2).2H(2)O, (II), are members of a commonly used family of therapeutic agents. Compound (I) is an inner salt with separated negative (on the ionized PO(3) group) and positive (on the tetrahedral N atom) charges, while (II) possesses neutral phosphonyl groups and one amide N atom. Both structures have a C-C-C-N backbone, which has comparable geometric parameters in (I) and (II); the main difference was found in one of the N-C-P bond angles, which is lengthened in (II) because of an intramolecular O(PO(3))-H.O(C=O) interaction. The hydrogen-bonding scheme in the crystal of (I) includes all possible donor atoms, namely all the H atoms of the ammonium group and the phosphonic acid functions. As a result of these interactions, the zwitterions are organized into a plane running along the crystallographic x axis. In (II), the intermolecular interactions include all possible donor atoms, except for the N atom; the packing differs from that of (I) in that the molecules are arranged in a chain running parallel to the x axis. In the chains, the molecules form head-to-head dimers, while the crystallization water molecules contribute to the intra- and interchain cohesion.

Diphosphonates↗