INTRODUCTION Although the human umbilical cord (UC) has been previously considered a medical waste, its use as a main source of fetal stem cells for regenerative medicine applications has increased over the past few years. The aim of the study was to assess the impact of the maternal age on the expression of mesenchymal stem cells (MSC) markers CD105 and CD29 in the different areas of human UC....

Serial haemodynamic investigations were performed in 32 women who were allocated randomly to receive either spinal or extradural anaesthesia for elective Caesarean section. Cardiac output was measured by Doppler and cross-sectional echocardiography at the aortic valve. Doppler flow velocity waveforms were recorded also from the umbilical artery. Preloading with Ringer lactate solution 1 litre i...

1. Animal and human work has indicated that maternal oxytocin secretion is under the control of endogenous opiates. Previous workers have described the fetal production of oxytocin in addition to maternal production. The study of the interaction between exogenously administered opiates and oxytocin secretion may give insight into the activity of any opiate-mediated regulatory mechanism of oxyto...

ess the relationship between umbilical cord blood gases at birth and morphology of umbilical cord, in a prospective study of 200 consecutive term delivery, we investigated the relationship between umbilical cord morphology characteristics (umbilical crd length, number of vascular coil, coiling index) and color of amniotic fluid and umbilical vessel blood gases. statistically significant linear ...

Doppler velocity measurement has been extensively applied in prenatal diagnosis for more than two decades. Blood flow in numerous vessels has been investigated to predict fetal condition, especially in the umbilical artery [1–7]. Histopathologic studies suggest that abnormal umbilical artery Doppler velocimetry is correlated with a pathologic lesion of the placenta characterized by obliteration...

Understanding anatomical variations can help physicians achieve better results in clinical practice. During routine dissection, we found variations in the branches of Internal Iliac Artery (IIA) of a 65-year-old Iranian female cadaver. The IIA ended by dividing to an unusual smaller anterior and a greater posterior trunk which was branched to the inferior gluteal arteries. Both pelvis and the u...

Background Serotonin (5-HT), is a vasoactive substance involved in physiological functioning of fetoplacental blood flow and continuous modulation of smooth muscle tone in umbilical vein and arteries. Since umbilical blood vessels have been shown to be deficient in autonomic innervation, the action of local autocrine vasoactive substances (including serotonin) is of considerable importance. Alt...