PMID- 32306191 OWN - NLM STAT- MEDLINE DCOM- 20201215 LR - 20201215 IS - 1613-2254 (Electronic) IS - 1346-4523 (Linking) VI - 47 IP - 3 DP - 2020 Jul TI - Key factors of diastolic dysfunction and abnormal left ventricular relaxation in diabetic rats. PG - 347-356 LID - 10.1007/s10396-020-01021-x [doi] AB - PURPOSE: To study the diastolic functions using color Doppler M-mode (CDMM) for noninvasive analysis of the intraventricular pressure difference (IVPD) in diabetic rats. METHODS: Two equal groups of rats were included: control and streptozotocin-induced DM (n = 15). The cardiac functions were examined monthly using conventional echocardiography and CDMM with a specific MATLAB software. Echocardiography was performed under 2% isoflurane mask inhalation. Five months thereafter, all rats were killed for macroscopic and microscopic examinations of the cardiac fibrosis. RESULTS: DM rats showed higher systolic blood pressure and diastolic dysfunction, i.e., decreases in several parameters such as E, E/A, TDIs, and IVPDs, compared to the controls. Moreover, obvious cardiac fibrosis was seen in perivascular and interstitial tissues, but there were no notable differences in terms of gross lesions. CONCLUSIONS: Because of the noninvasive nature of CDMM, IVPD and other conventional echocardiographic parameters can be used as reliable indicators generally for evaluating cardiac function and particularly the change in intraventricular pressure. FAU - Kitpipatkun, Pitipat AU - Kitpipatkun P AD - Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan. FAU - Matsuura, Katsuhiro AU - Matsuura K AD - Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan. FAU - Shimada, Kazumi AU - Shimada K AD - Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan. FAU - Uemura, Akiko AU - Uemura A AD - Animal Medical Centor, Tokyo University of Agriculture and Technology, Tokyo, Japan. FAU - Goya, Seijirow AU - Goya S AD - Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan. FAU - Yoshida, Tomohiko AU - Yoshida T AD - Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan. FAU - Ma, Danfu AU - Ma D AD - Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan. FAU - Takahashi, Ken AU - Takahashi K AD - Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan. FAU - Tanaka, Ryou AU - Tanaka R AD - Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan. ryo@vet.ne.jp. LA - eng PT - Journal Article DEP - 20200418 PL - Japan TA - J Med Ultrason (2001) JT - Journal of medical ultrasonics (2001) JID - 101128385 SB - IM MH - Animals MH - Diabetes Mellitus, Experimental/*complications/*physiopathology MH - Diastole/physiology MH - Disease Models, Animal MH - Echocardiography, Doppler, Color/*methods MH - Heart Ventricles/diagnostic imaging/physiopathology MH - Humans MH - Male MH - Rats MH - Rats, Sprague-Dawley MH - Ventricular Dysfunction, Left/complications/*diagnostic imaging/*physiopathology OTO - NOTNLM OT - Diabetes OT - Echocardiography OT - Intraventricular pressure difference OT - Rats OT - Streptozotocin EDAT- 2020/04/20 06:00 MHDA- 2020/12/16 06:00 CRDT- 2020/04/20 06:00 PHST- 2019/11/01 00:00 [received] PHST- 2020/03/08 00:00 [accepted] PHST- 2020/04/20 06:00 [pubmed] PHST- 2020/12/16 06:00 [medline] PHST- 2020/04/20 06:00 [entrez] AID - 10.1007/s10396-020-01021-x [pii] AID - 10.1007/s10396-020-01021-x [doi] PST - ppublish SO - J Med Ultrason (2001). 2020 Jul;47(3):347-356. doi: 10.1007/s10396-020-01021-x. Epub 2020 Apr 18.