PMID- 21327437 OWN - NLM STAT- MEDLINE DCOM- 20121207 LR - 20211020 IS - 1437-160X (Electronic) IS - 0172-8172 (Linking) VI - 32 IP - 6 DP - 2012 Jun TI - Effects of pulsed electromagnetic fields on the mRNA expression of CAII and RANK in ovariectomized rats. PG - 1527-32 LID - 10.1007/s00296-010-1740-7 [doi] AB - The present study was designed to determine the effects of pulsed electromagnetic fields (PEMFs) on the mRNA expression of the carbonic anhydrase II (CAII) and receptor activator of NF-kappaB (RANK) in ovariectomized rats. A total of 48 SD rats were randomly divided into four groups [Sham, OVX, PEMFs, and E(2) (premarin)], 12 rats in each group. Rats in the Sham group received sham ovariectomy, while rats in OVX, PEMFs, and E(2) groups received ovariectomy. Twelve weeks following the surgery, rats (whole body) in the PEMFs group were exposed to PEMFs for 30 days with 3.8 mT, 8 Hz, and 40 min per day; rats in the E(2) group were administered premarin (0.0625 mg/kg/d; intragastric administration 1-2 ml/100 g). Rats in the Sham and OVX groups housed in the same conditions. At the end of intervention, the level of serum estradiol of rats was measured. The gene expression of CAII and RANK in the left ilium of rats was determined with real-time fluorescent-nested quantitative polymerase chain reaction. Compared with the Sham group, the level of serum estradiol in the ovariectomized group was significantly decreased (P < 0.05); compared with the OVX group, CAIImRNA expression was significantly decreased in the PEMFs group and E group (P < 0.05, 0.01, respectively). Compared with the E group, RANKmRNA expression was significantly higher in the PEMFs group (P < 0.05); although RANKmRNA expression decreased in PEMFs group, no statistically significant difference was found between PEMF group and OVX group (P = 0.82). These data suggest that PEMFs could regulate the expression of CAIImRNA in ovariectomized rats. FAU - Chen, Jian AU - Chen J AD - Department of Rehabilitation, Zhong Shang Hospital, Xiamen University, Xiamen, 361004, China. FAU - Huang, Li-Qun AU - Huang LQ FAU - Xia, Qing-Jie AU - Xia QJ FAU - He, Cheng-Qi AU - He CQ LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110215 PL - Germany TA - Rheumatol Int JT - Rheumatology international JID - 8206885 RN - 0 (Estrogens) RN - 0 (Estrogens, Conjugated (USP)) RN - 0 (RNA, Messenger) RN - 0 (Receptor Activator of Nuclear Factor-kappa B) RN - 4TI98Z838E (Estradiol) RN - EC 4.2.1.- (Carbonic Anhydrase II) SB - IM MH - Animals MH - Carbonic Anhydrase II/*genetics MH - *Electromagnetic Fields MH - Estradiol/administration & dosage/blood MH - Estrogen Replacement Therapy MH - Estrogens/administration & dosage/blood MH - Estrogens, Conjugated (USP)/administration & dosage/blood MH - Female MH - Gene Expression Regulation, Enzymologic MH - Ilium/drug effects/*enzymology MH - *Ovariectomy MH - RNA, Messenger/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Real-Time Polymerase Chain Reaction MH - Receptor Activator of Nuclear Factor-kappa B/*genetics MH - Reverse Transcriptase Polymerase Chain Reaction MH - Time Factors EDAT- 2011/02/18 06:00 MHDA- 2012/12/12 06:00 CRDT- 2011/02/18 06:00 PHST- 2010/08/06 00:00 [received] PHST- 2010/12/30 00:00 [accepted] PHST- 2011/02/18 06:00 [entrez] PHST- 2011/02/18 06:00 [pubmed] PHST- 2012/12/12 06:00 [medline] AID - 10.1007/s00296-010-1740-7 [doi] PST - ppublish SO - Rheumatol Int. 2012 Jun;32(6):1527-32. doi: 10.1007/s00296-010-1740-7. Epub 2011 Feb 15.