PMID- 16819333 OWN - NLM STAT- MEDLINE DCOM- 20060810 LR - 20220408 IS - 0147-5185 (Print) IS - 0147-5185 (Linking) VI - 30 IP - 7 DP - 2006 Jul TI - Ultrasonic decalcification offers new perspectives for rapid FISH, DNA, and RT-PCR analysis in bone marrow trephines. PG - 892-6 AB - The requisite analyses on bone marrow biopsies are increasing: Molecular analyses such as fluorescence in situ hybridization (FISH), polymerase chain reaction (PCR), and reverse transcriptase (RT)-PCR are demanded in addition to morphology and immunohistochemistry to improve diagnostic accuracy. Moreover, analysis of certain molecular prognostic or predictive biomarkers is increasingly mandatory in the assessment of hematologic diseases. In some circumstances, only formalin fixed, bone-containing tissue is available for molecular analysis. Because various fixation and decalcification procedures can impair DNA and RNA quality, there is an urgent need for standardized decalcification protocols which allow FISH and PCR analysis. In this study we developed a routinely applicable decalcification protocol to optimize the molecular analysis method although preserving morphology and immunohistochemical results. Therefore, we compared 2 different approaches including ultrasonic decalcification versus nonultrasonic procedures and ethylenediaminetetraacetate-based reagents versus acid-based ones. In our hands, the combined use of ultrasound and ethylenediaminetetraacetate-based reagents permits successful interphase FISH, PCR, and RT-PCR analysis whereas concomitantly preserving morphology and antigeneicity. FAU - Reineke, Tanja AU - Reineke T AD - Institute of Surgical Pathology, University Hospital Zurich, Schmelsburgstrasse 12, CH-8091 Zurich, Switzerland. FAU - Jenni, Bettina AU - Jenni B FAU - Abdou, Marie-Therese AU - Abdou MT FAU - Frigerio, Simona AU - Frigerio S FAU - Zubler, Petra AU - Zubler P FAU - Moch, Holger AU - Moch H FAU - Tinguely, Marianne AU - Tinguely M LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Surg Pathol JT - The American journal of surgical pathology JID - 7707904 RN - 0 (Fixatives) RN - 1HG84L3525 (Formaldehyde) RN - 411VRN1TV4 (Nitric Acid) RN - 63231-63-0 (RNA) RN - 9007-49-2 (DNA) RN - 9G34HU7RV0 (Edetic Acid) RN - SY7Q814VUP (Calcium) SB - IM MH - Biopsy MH - Bone Marrow Examination/methods MH - Calcium/*chemistry MH - DNA/*analysis MH - *Decalcification Technique MH - Edetic Acid/chemistry MH - Fixatives MH - Formaldehyde MH - *In Situ Hybridization, Fluorescence MH - Nitric Acid/chemistry MH - Paraffin Embedding MH - RNA/analysis MH - Reverse Transcriptase Polymerase Chain Reaction/*methods MH - Specimen Handling/*methods MH - Tissue Fixation MH - Ultrasonics EDAT- 2006/07/05 09:00 MHDA- 2006/08/11 09:00 CRDT- 2006/07/05 09:00 PHST- 2006/07/05 09:00 [pubmed] PHST- 2006/08/11 09:00 [medline] PHST- 2006/07/05 09:00 [entrez] AID - 00000478-200607000-00015 [pii] AID - 10.1097/01.pas.0000213282.20166.13 [doi] PST - ppublish SO - Am J Surg Pathol. 2006 Jul;30(7):892-6. doi: 10.1097/01.pas.0000213282.20166.13.