Wang T.,Zhengzhou University |
Jiang L.H.,Zhengzhou University |
Zhu J.B.,Henan Chinese Medical College |
Wei X.Y.,Zhengzhou University |
And 2 more authors.
Clinical and Experimental Obstetrics and Gynecology
Objective: Preeclampsia is a unique disease of pregnancy. Delivery via caesarean section is the most important way of terminating the pregnancy and treating preeclampsia. Perioperative fluid therapy is performed to maintain the circulatory volume and reduce tissue edema. This study evaluated die effects of hypertonic sodium chloride hydroxyethyl starch 40 (HSH40) as perioperative fluid therapy for preeclampsia patients. Materials and Methods: Forty preeclamptic women were randomly divided into two groups: the Ringer's solution group and the HSH40 group. Their ECG, HR, MAP, and SPO2 were monitored. Their MVP and HR were recorded at five, eight, and ten minutes after anesthesia induction and at the end of the caesarean section. The corresponding volume of infusion, blood loss, and urine output during the operation were also recorded. Venous samples were collected before HSH40 infusion and 30 min after infusion to measure the plasma concentrations of ET, TXB2,6-keto-PGFα, and ANP via a radioimmunoassay. Results: HSH40 infusion significantly decreased the plasma ET levels (p < 0.01), significantly changed the plasma ANP and TXB2 levels (p < 0.05), and significantly increased the plasma 6-keto-PGF1α levels (p < 0.01) in the experimental group compared with those before infusion. The plasma levels of ET, ANP, TXB2, and 6-keto-PGF1α did not significantly change in the control group. Compared with T1, MAP decreased significantly at T2, T3, T4, and T5 within groups (p < 0.05) and between the two groups. MAP significantly changed at T2, T3, T4, and T5 (p < 0.05). HR did not significant change at Tl, T2, T3, T4, and T5 within or between groups. Volume of infusion and urine volume significantly differed between groups (p < 0.05). Conclusion: Low-dose HSH40 lowers the plasma levels of vasoconstrictor substances (ET and TXB2) and increases the levels of vasodilator substances (6-keto-PGF1α and ANP) during preeclampsia. It effectively maintains and stabilizes the circulating blood volume, increasing renal blood flow, which improves renal function and increases urine output. Source
Zhu C.,Gothenburg University |
Zhu C.,Zhengzhou University |
Sun Y.,Gothenburg University |
Sun Y.,Zhengzhou University |
And 7 more authors.
Translational Stroke Research
It was recently discovered that while under normal conditions inhaled nitric oxide (iNO) does not affect cerebral blood flow, it selectively dilates arterioles in the ischemic penumbra during experimental cerebral ischemia, thereby increasing collateral blood flow and reducing ischemic brain damage. The mechanism was verified in multiple models, but only in male animals. Our aim was to evaluate the effects of iNO on brain injury in neonatal males and females. Nine-day-old mice were subjected to unilateral hypoxia-ischemia (HI), using 10 % oxygen balanced with nitrogen, with or without 50 ppm NO. Brain injury 72 h after HI was reduced by iNO as judged by percentage of injury (-21. 7 %), atrophy (-23. 7 %), and total pathological score (-29 %). The injury was significantly reduced in males (-32. 4 %, p & 0. 05) but not in females (-7. 1 %, n. s.). Neither the numbers nor the proliferation rates of neural stem cells in the dentate gyrus were affected by iNO. In summary, intraischemic iNO reduced neonatal HI brain injury in a gender-related manner. © 2012 Springer Science+Business Media New York. Source