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Cinacalcet is effective in relapses of secondary hyperparathyroidism after parathyroidectomy.
Nephrol Dial Transplant. 2007 Jul; 22(7):2056-62.ND

Abstract

BACKGROUND

Relapses of secondary hyperparathyroidism (SHPTH) after parathyroidectomy (PTx) in haemodialysis patients are relatively frequent. Calcimimetics (cinacalcet HCl) offer a new therapeutic opportunity for their treatment. However, no data about the treatment with cinacalcet of relapses of SHPTH after PTx are available in literature. The aim of this single-centre prospective study was to evaluate the therapeutic efficacy of cinacalcet in this high-risk category of patients.

METHODS

Twelve haemodialysis patients of our Dialysis Unit had a relapse of SHPTH after PTx, defined as serum levels of immunoreactive intact parathyroid hormone (iPTH)>300 pg/ml. They were stratified into a treatment group (the six patients having the highest serum levels of iPTH) and a control group (the remaining six patients): the former were treated for 6 months with a dose of cinacalcet ranging from 30 mg every other day to 60 mg a day; the latter continued to be administered the conventional treatment. Serum levels of albumin, iPTH, calcium (Ca), phosphate (P) and alkaline phosphatase were determined monthly. The treatment group included four cases of nodular hyperplasia and two cases of carcinoma of parathyroid glands, whereas the control group included four cases of nodular hyperplasia and two cases of diffuse hyperplasia.

RESULTS

At the start of the study, the six patients treated with cinacalcet showed a more severe picture of biochemical abnormalities when compared with the control patients. After 6 months of treatment, a statistically significant reduction in the serum levels of iPTH, Ca, P and CaxP product was obtained only in the patients treated with cinacalcet. Symptomatic episodes of hypocalcaemia (serum Ca<7.0 mg/dl) were observed in three patients of this group. The six patients undergoing the conventional treatment showed at 6 months a not significant decrease in the mean serum levels of iPTH and a not significant increase in the mean serum levels of Ca, P and CaxP product, when compared with the baseline values.

CONCLUSIONS

Our single-centre prospective study, even though small and of short duration, shows that cinacalcet is effective also in controlling relapses of SHPTH after PTx, thus representing a solid, and sometimes unique, therapeutic opportunity for this high-risk category of patients.

Authors+Show Affiliations

Division of Nephrology, Miulli General Hospital, Acquaviva delle Fonti, Italy.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17449495

Citation

Lomonte, Carlo, et al. "Cinacalcet Is Effective in Relapses of Secondary Hyperparathyroidism After Parathyroidectomy." Nephrology, Dialysis, Transplantation : Official Publication of the European Dialysis and Transplant Association - European Renal Association, vol. 22, no. 7, 2007, pp. 2056-62.
Lomonte C, Antonelli M, Losurdo N, et al. Cinacalcet is effective in relapses of secondary hyperparathyroidism after parathyroidectomy. Nephrol Dial Transplant. 2007;22(7):2056-62.
Lomonte, C., Antonelli, M., Losurdo, N., Marchio, G., Giammaria, B., & Basile, C. (2007). Cinacalcet is effective in relapses of secondary hyperparathyroidism after parathyroidectomy. Nephrology, Dialysis, Transplantation : Official Publication of the European Dialysis and Transplant Association - European Renal Association, 22(7), 2056-62.
Lomonte C, et al. Cinacalcet Is Effective in Relapses of Secondary Hyperparathyroidism After Parathyroidectomy. Nephrol Dial Transplant. 2007;22(7):2056-62. PubMed PMID: 17449495.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cinacalcet is effective in relapses of secondary hyperparathyroidism after parathyroidectomy. AU - Lomonte,Carlo, AU - Antonelli,Maurizio, AU - Losurdo,Nicola, AU - Marchio,Giovanni, AU - Giammaria,Bernardo, AU - Basile,Carlo, Y1 - 2007/04/20/ PY - 2007/4/24/pubmed PY - 2007/10/17/medline PY - 2007/4/24/entrez SP - 2056 EP - 62 JF - Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association JO - Nephrol Dial Transplant VL - 22 IS - 7 N2 - BACKGROUND: Relapses of secondary hyperparathyroidism (SHPTH) after parathyroidectomy (PTx) in haemodialysis patients are relatively frequent. Calcimimetics (cinacalcet HCl) offer a new therapeutic opportunity for their treatment. However, no data about the treatment with cinacalcet of relapses of SHPTH after PTx are available in literature. The aim of this single-centre prospective study was to evaluate the therapeutic efficacy of cinacalcet in this high-risk category of patients. METHODS: Twelve haemodialysis patients of our Dialysis Unit had a relapse of SHPTH after PTx, defined as serum levels of immunoreactive intact parathyroid hormone (iPTH)>300 pg/ml. They were stratified into a treatment group (the six patients having the highest serum levels of iPTH) and a control group (the remaining six patients): the former were treated for 6 months with a dose of cinacalcet ranging from 30 mg every other day to 60 mg a day; the latter continued to be administered the conventional treatment. Serum levels of albumin, iPTH, calcium (Ca), phosphate (P) and alkaline phosphatase were determined monthly. The treatment group included four cases of nodular hyperplasia and two cases of carcinoma of parathyroid glands, whereas the control group included four cases of nodular hyperplasia and two cases of diffuse hyperplasia. RESULTS: At the start of the study, the six patients treated with cinacalcet showed a more severe picture of biochemical abnormalities when compared with the control patients. After 6 months of treatment, a statistically significant reduction in the serum levels of iPTH, Ca, P and CaxP product was obtained only in the patients treated with cinacalcet. Symptomatic episodes of hypocalcaemia (serum Ca<7.0 mg/dl) were observed in three patients of this group. The six patients undergoing the conventional treatment showed at 6 months a not significant decrease in the mean serum levels of iPTH and a not significant increase in the mean serum levels of Ca, P and CaxP product, when compared with the baseline values. CONCLUSIONS: Our single-centre prospective study, even though small and of short duration, shows that cinacalcet is effective also in controlling relapses of SHPTH after PTx, thus representing a solid, and sometimes unique, therapeutic opportunity for this high-risk category of patients. SN - 0931-0509 UR - https://wwww.unboundmedicine.com/medline/citation/17449495/Cinacalcet_is_effective_in_relapses_of_secondary_hyperparathyroidism_after_parathyroidectomy_ L2 - https://academic.oup.com/ndt/article-lookup/doi/10.1093/ndt/gfm156 DB - PRIME DP - Unbound Medicine ER -