PMID- 28591361 OWN - NLM STAT- MEDLINE DCOM- 20170822 LR - 20220310 IS - 1678-2674 (Electronic) IS - 0102-8650 (Linking) VI - 32 IP - 5 DP - 2017 May TI - Doppler velocimetry in fetal rats exposed to enoxaparin and unfractionated heparin (UFH) during pregnancy. PG - 325-333 LID - S0102-86502017000500325 [pii] LID - 10.1590/s0102-865020170050000001 [doi] AB - PURPOSE: To evaluate the effects of enoxaparin and unfractionated heparin (UFH) administered in prophylactic and therapeutic doses on fetal vessels in healthy pregnant Wistar rats, according to Doppler velocimetry measurements. METHODS: Fifty animals were assigned to one of five groups: controls (saline), prophylactic and therapeutic enoxaparin (1 and 2 mg/kg/day, respectively), and prophylactic and therapeutic UFH (72 and 400 UI/kg/day, respectively). Uterine horns were examined by ultrasound for identification of live fetuses. A sample of these fetuses underwent Doppler velocimetry. Spectral curves, peak systolic velocity (PSV), pulsatility index (PI), and resistance index (RI) of the middle cerebral artery, ductus venosus, and umbilical artery were investigated. Differences were considered statistically significant when p<0.05. RESULTS: No significant differences in PSV, PI, or RI values were observed among the groups. CONCLUSION: Doppler velocimetry measurements revealed no significant effects of enoxaparin or unfractionated heparin on fetal vessels in pregnant Wistar rats. FAU - Senefonte, Flavio Renato de Almeida AU - Senefonte FRA AD - Fellow PhD degree, Postgraduate Program in Health and Development, Universidade Federal de Mato Grosso do Sul (UFMS), Campo Grande-MS, Brazil. Conception, design, intellectual and scientific content of the study; technical procedures; acquisition and interpretation of data; statistical analysis; manuscript writing; critical revision. FAU - Aydos, Ricardo Dutra AU - Aydos RD AD - PhD, Associate Professor, Department of Surgery, UFMS, Campo Grande-MS, Brazil. Intellectual and scientific content of the study, critical revision, final approval. FAU - Oliveira, Vanessa Marcon de AU - Oliveira VM AD - PhD, Pharmacist, Centro de Ciencias Biologicas e da Saude, UFMS, Campo Grande-MS, Brazil. Technical procedures, acquisition and interpretation of data. FAU - Bosio, Marco Antonio Costa AU - Bosio MAC AD - MD, UFMS, Campo Grande-MS, Brazil. Technical procedures, acquisition and interpretation of data. FAU - Figueiro-Filho, Ernesto Antonio AU - Figueiro-Filho EA AD - PhD, Associate Professor, UFMS, Campo Grande-MS, Brazil. Conception, design, intellectual and scientific content of the study; critical revision; final approval. LA - eng PT - Journal Article PL - Brazil TA - Acta Cir Bras JT - Acta cirurgica brasileira JID - 9103983 RN - 0 (Anticoagulants) RN - 0 (Enoxaparin) RN - 9005-49-6 (Heparin) SB - IM MH - Animals MH - Anticoagulants/*pharmacology MH - Blood Flow Velocity/*drug effects MH - Echocardiography, Doppler, Pulsed/methods MH - Enoxaparin/*pharmacology MH - Female MH - Fetus/*blood supply MH - Heparin/*pharmacology MH - Middle Cerebral Artery/*drug effects/physiopathology MH - Models, Animal MH - Pregnancy MH - Rats, Wistar MH - Ultrasonography, Prenatal/methods MH - Umbilical Arteries/*drug effects/physiopathology MH - Uterine Artery/*drug effects/physiopathology MH - Weight Gain/drug effects EDAT- 2017/06/08 06:00 MHDA- 2017/08/23 06:00 CRDT- 2017/06/08 06:00 PHST- 2017/01/18 00:00 [received] PHST- 2017/04/20 00:00 [accepted] PHST- 2017/06/08 06:00 [entrez] PHST- 2017/06/08 06:00 [pubmed] PHST- 2017/08/23 06:00 [medline] AID - S0102-86502017000500325 [pii] AID - 10.1590/s0102-865020170050000001 [doi] PST - ppublish SO - Acta Cir Bras. 2017 May;32(5):325-333. doi: 10.1590/s0102-865020170050000001.