Journal Detail Information

1

Cite

Share

Sodium pyruvate protect occipital cortex of rats with repetitive and severe neonatal hypoglycemia detected by high resolution 1H nuclear magnetic resonance spectroscopy

Kun LIU ; Yuchuan FU ; Meimei DU ; Xinjian YE ; Xiaoyan HUANG ; Yongjin ZHOU ; Liangcai ZHAO ; Hongchang GAO ; Zhihan YAN

Chinese Journal of Perinatal Medicine.2017;20(3):228-233. doi:10.3760/cma.j.issn.1007-9408.2017.03.016

Objectives To investigate the occipital cortex metabolite alterations in repetitive and severe neonatal hypoglycemia rats treated with sodium pyruvate and to reveal the protective role of sodium pyruvate using high resolution 1H nuclear magnetic resonance spectroscopy.Methods Thirty-six 2-dayold Sprague-Dawley rats were randomly divided into hypoglycemia group and pyruvate group with 18 rats in each group.Rats in both groups received intraperitoneal injections of insulin (40 U/kg body weight) at 2,4 and 6 days of age to induce severe hypoglycemia (blood glucose value ≤ 1.4 mmol/L).In the hypoglycemia group,2.5 hours after insulin injection,intraperitoneal injection of 50％ glucose (2 ml/kg) was administered to terminate hypoglycemia,while in the pyruvate group,50％ glucose (2 ml/kg) and sodium pyruvate solution 2.5 ml/kg (500 mg/kg) were injected.Terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling assay was used to observe the status of injured neurons in six neonatal rats,and metabolite changes in occipital cortex of the other 12 rats were detected by 1H nuclear magnetic resonance spectroscopy.The difference between the two groups was compared by independent-samples t test.Results Neonatal rats of both groups reached severe hypoglycemia level 2.5 hours after insulin injection.Compared with hypoglycemia group,pyruvate group had fewer injured neurons (45±5 vs 113 ± 12,t=0.782,P=0.013) and lower injured index in the occipital cortex (0.15 ± 0.03 vs 0.36 ± 0.06,t=l.143,P=0.020).Pyruvate group showed significant decreases in the concentration of taurine [(13.31 ± 2.06) vs (18.44 ± 3.86) mol/kg,t=8.231],glutamine[(1.50 ± 0.24) vs (2.02 ± 0.40) mol/kg,t=3.137],glutamate[(7.04 ± 0.95) vs (9.40 ± 1.73) mol/kg,t=6.449],aspartate[(1.51 ± 0.28) vs (2.15 ± 0.58) mol/kg,t=2.561] and creatine [(6.37±0.99) vs (8.46± 1.77) mol/kg,t =4.226] in the occipital cortex (all P'＜0.017).Conclusions Simultaneous use of glucose and sodium pyruvate to terminate hypoglycemia in repetitive and severe neonatal hypoglycemia rats can effectively alleviate severe hypoglycemia-induced occipital lobe damage via regulating excitatory amino acid neurotransmitters,energy metabolism and other metabolic pathways.

2

Cite

Share

Effects of different doses of vitamin D on serum calcium, phosphorus, alkaline phosphatase and 25-hydroxyvitamin D levels in very low birth weight infants

Qingxian DENG ; Meifang LIN ; Xinhua YUAN ; Qinqin FU ; Qi JIANG ; Yufang WANG ; Gesheng WEN

Chinese Journal of Perinatal Medicine.2017;20(3):223-227. doi:10.3760/cma.j.issn.1007-9408.2017.03.015

Objectives To understand the effects of different doses of vitamin D supplementation on serum calcium,phosphorus,alkaline phosphatase and 25-hydroxyvitamin D levels in very low birth weight infants (VLBWI) and to provide guidance for early prevention of metabolic bone disease in VLBWI.Methods A total of 90 VLBWI hospitalized in the Department of Neonatology,Huzhou Maternal and Child Healthcare Hospital between January 2014 and January 2016 were enrolled and randomly divided into two groups:highdose group and low dose group.High-dose group was given vitamin D 900 U/d orally and low-dose group was given 400 U/d since the eighth day after birth.Serum calcium,phosphorus and alkaline phosphatase levels were detected at 1,7,21 and 42 days of age and serum 25-hydroxyvitamin D levels were detected at 7,21and 42 days of age.Two-sample t-test,Chi-square test,one-way analysis of variance and LSD or Dunnett's T3 test were used for statistical analysis.Results No significant differences in serum calcium,phosphorus and alkaline phosphatase levels were found between the two groups at 1 and 7 days of age,nor were found in serum 25-hydroxyvitamin D level at 7 days of age (all P＞0.05).At 21 days of age,high dose group had higher serum calcium,phosphorus and 25-hydroxyvitamin D levels than low-dose group [(2.38 ± 0.09) vs (2.04 ± 0.15) mmol/L,t=2.421;(1.80±0.50) vs (1.71 ±0.60) mmol/L,t-0.637;(45.58± 18.43) vs (42.53± 16.33) nmol/L,t=0.421],but lower alkaline phosphatase level [(505.12± 185.61) vs (588.32± 168.72) U/L,t=5.314] (all P＜0.05).The same trends were found at 42 days of age.In high-dose group,serum calcium level increased at 7,21 and 42 days of age as compared with that at 1 day of age [(2.43±0.13),(2.38±0.09),(2.39±0.08) vs (2.06±0.57) mmol/L];serum phosphorus level at 7 days of age was lower than that at 1,21 and 42 days of age [(1.31 ±0.26) vs (1.89±0.39),(1.80±0.50),(1.98±0.30) mmol/L];serum alkaline phosphatase level at 7,21 and 42 days of age was higher than that at 1 day of age [(475.18± 133.73),(505.12± 185.61),(538.43 ± 168.16) vs (296.15 ± 99.41) U/L] and a significant increase was observed at 42 days of age as compared with that at 7 days of age;serum 25 hydroxyvitamin D level at 21 days of age was higher than that at 7 days of age,and that at 42 days of age was higher than that at 7 and 21 days of age [(73.55±23.65) vs (30.63± 12.66) and (45.58 ± 18.43) nmol/L];the differences were all statistically significant (LSD or Dunnett's T3 test,all P＜0.05).Conclusions Vitamin D supplementation from the eighth day after birth can improve calcium and phosphorus metabolism in VLBWI and the dose of 900 U/d is more effective than 400 U/d.

3

Cite

Share

Natural closing time of patent foramen ovale in newborns

Haimei YU ; Yajuan WANG ; Song GU ; Yan ZHONG

Chinese Journal of Perinatal Medicine.2017;20(3):219-222. doi:10.3760/cma.j.issn.1007-9408.2017.03.014

Objectives To investigate the closing time of patent foramen ovale in newborns and infants in order to provide appropriate follow-up time points.Methods From September 1,2010 to April 30,2011,131 of l 202 full-term infants with patent foramen ovale were finished follow up at 3,6 and 12 months of age in Beijing Children's Hospital,Capital Medical University.If the foramen ovale was not closed at 12 months of age,the patients were followed up until two years of age.The closing time and the effects of complicated patent ductus arteriosus (PDA) were analyzed statistically using two independent t test,Chi-square and trend Chi square tests.Results Of the 131 full-term infants with patent foramen ovale,72 were males,and 59 were females.The foramen ovale size in neonatal period was not statistically different between males and females [(2.94 ±0.86) vs (2.95 ± 0.92) mm,t=0.641,P=0.964].The foramen ovale closing rate at 3 months was 21.4％ (28/131),67.9％ (89/131) at 6 months,and 95.4％ (125/131) at 12 months.The rate of foramen ovale closing decreased with larger foramen ovale at 3,6 and 12 months of age (x2trend were 42.930,101.050 and 63.260,all P＜0.05).Six patients with patent foramen ovale at 12 months of age were followed up until 2 years of age:two cases with foramen ovale ＜5.0 mm in the neonatal period were closed,one of two cases with foramen ovale ≥5.0 but ＜6.0 mm was closed,and one of two cases with foramen ovale ≥ 6.0 mm was closed.Of the 131 cases,121 were simple patent foramen ovale,and l0 were complicated with PDA.There were no significant difference in neonatal foramen ovale size between children with simple patent foramen ovale and those with PDA [(2.95 ±0.88) vs (2.82±0.83) mm,t=0.782,P=0.649].The closing rates in the simple patent foramen ovale group at 3,6,and 12 months of age were 21.5％ (26/121),57.9％ (55/95) and 87.5％ (35/40),respectively,and showed no significant difference from those with PDA (2/10,6/8 and 1/2,x2=0.012,0.946 and 1.536,all P＞0.05).In the simple patent foramen ovale group,the closing rate at 3 months was less than that at 6 months and 12 months 0x2 were 10.410 and 62.515,both P＜0.01).There was no difference in the closing rate in patients with PDA at 3,6 and 12 months (x2=5.748,P＞0.05).Conclusions Asymptomatic patent foramen ovale with a foramen ovale ＜5.0 mm may not require follow-up.But patients with a foramen ovale ≥ 5.0 mm,even asymptomatic,should be followed up using thoracic echocardiography at 2 years,and further follow-up is required if unclosed.

4

Cite

Share

An Experimental Study on the Protective Effect of Mild Hypothermia on the Hypoxic-ischemic Brain Injury

Mei QIN ; Xinghe WANG ; Lian CHEN

Chinese Journal of Perinatal Medicine.1998;0(02):-.

Objective To investigate the optimal mild hypothermia course and cerebral temperature of the neonatal rats after hypoxic-ischemic brain injury. Methods The posthypoxic-ischemic rats of experimental group (n=60) were placed in the glass jars immeresd in water bath held constaut at either 29 C or 3l C for 24h, 48h or 72h. While the rats of room temperature group (n=22) were stayed in room air. Blood glucose, blood gases and neuropathology findings were studied to determine the therapeutic effects. Results The brain temperature droped 3C or 5C when enviro ment temperature was 31C or 29C respectively. The blood glucose remained normal. Neuropathology findings reveled that the brain damage of experimental rats reduced 46%～86% compared to the room temperature group. Conclusion Reducing the cerebral temperature by 4～5 C for 72 hours after hypoxic-ischemic brain injury can lead to superior protective effect.

5

Cite

Share

A Study on Hemorheoiogy,Platelet-Activating and Hemostasis in Severe Asphyxiated Newborns

Yun CAO ; Xiaornei SHAO ; Yue WU

Chinese Journal of Perinatal Medicine.1998;0(02):-.

Objective To study the hemorheology,platelet-activating and hemostasis of severe asphyxiated newborns. Methods Erythrocyte filtration index(IF) ,granule membrane glycoprotein (GMP-140),D-dimer(DD) and yon Willebrand factor(vWF) were measured in 60 severe asphyxiated term newborns and 20 healthy term newborns. The effect of platelet-activating-factor (PAF) antagonist-EGb761 were also obserred. 60 term newborns with severe asphyxia were divided into two groups :treatment group(n= 30) and control group(n = 30). Results During the first day of life the IF,GMP-140,vWF and DD of the severe asphyxiated newborns increased significantly compared with those of healthy newborns(P0.05). Conclusion 1. Severe asphyx iated newborns vary in hemorheology,platelet-activating and hemostasis,which leads to disturbance of microcirculation and organ injury. 2. PAF plays a role in the pathophysiologic process, and PAF antagonist can improve the microcirculation of severe asphyxiated newborns.

6

Cite

Share

The Effects of Vaginal-cervical Balloon Dilatation on Shorting the Duration of Labour

Yujie LIU ; Ruilin ZHAO ; Yangshun TIAN

Chinese Journal of Perinatal Medicine.1998;0(02):-.

Objective To valuate the effects of Balloon dilatation on shorting the duration of labour. Methods Vaginal-cervical Balloon dilatation were used to dilate the vaginal and cervix in 303 cases of pregnant women (67 cases in latent stage and 236 cases in active stage)in labor. At the same time,284 cases of pregnant women did not use the Balloon dilatation as control. Rusults The length of first stage,second stage and the length of labour were shorter when Balloon dilatation were used in latent phase than those in the control group(7.58,0.53 and 9.27 hours v.s 10.86,1.12 and 12.23 hours) P

7

Cite

Share

Effect of Fat Emulsion on Blood Lipid and Liver Function in Criticaly Ⅲ Premature Infants

Yin PING ; Shaomin SONG ; Haiping LIU

Chinese Journal of Perinatal Medicine.1998;0(02):-.

Objective To observe the effect of different doses of fat emulsion on blood lipid and liver function in critically ill premature infants. Methods 40 babies were randomly divided into 4 groups,receiving fat emulsion 0,1,2,3 g?kg~(-1)?d~(-1) for 5 days respectively. The blood levels of cholesterol and triglyceride and the serum biochemical indexes relative to liver functions were measured before and after the period of 5 days. Results Blood lipid and serum ?-GT levels did not change remarkably in 1 or 2 g?kg~(-1)?d~(-1) group, but increased significantly in 3 g?kg~(-1)?d~(-1) group. Serum bilirubin levels decreased in all groups, but it was significantly higher in the group of 3 g?kg~(-1) ?d~(-1) than the others. Conclusion It is suggested that the blood lipid level would increase with 3g?kg~(-1)?d~(-1) of fat emulsion used in critically ill premature infants and that the use of fat emulsion would retard the falling of serum bilirubin level when used in newborn infants with byperbilirubinemia.

8

Cite

Share

A Study on Relationship between Newborns' Feeding Pattens and Mothers' Nutrition Knowledge,Attitude, and Behavior

Shaoxia LIANG ; Zhiguang MAI

Chinese Journal of Perinatal Medicine.1998;0(02):-.

Objective To investigate the relationship between newborn's feeding pattern and mother's knowledge-attitude-behavior in nutrition(K-A-B). Methods 246 pairs of mother and her newborn, 28?3 days old,were enrolled in the study,and questionnaire on the K-A-B was sent. Results The breaset-feeding rate of the newborn was 65.1%. 9.8% newborns were fed inappropriately. Only 65.5% mothers passed the examination of nutritional knowledge. However,88.5% mothers had positive attitude to receiving nutritional education. A lot of mothers have food preference. Nutritional lecture ,consultation in out patient department and by telephone were the nutritional education channels choiced by 78.5% mothers. Conclusion Breast-feeding rate of the newborns had been significantly reduced in comparison with that(85.1%) two years ago. Solid foods were given too early to the newborns. The major contributing factor is lack of knowledge in nutrition of mothers . Mothers should learn more about nutrition and improve their feeding skill through nutritional education.

9

Cite

Share

Clinical Analysis of Premature Infection

Guofang DING ; Xinzhu LIN

Chinese Journal of Perinatal Medicine.1998;0(02):-.

0.05). The birth weight and the number of machanical ventilation between the two groups were singnificant difference (P

10

Cite

Share

The Difference Between Fetal Malnutrition and Small for Gestational Age and Its Clinical Significance

Lili YANG ; Yifang KUANG ; Fangping WAN

Chinese Journal of Perinatal Medicine.1998;0(02):-.

Objective To find out the difference between fetal malnutrition (FM) and small for gestational age (SGA) and its clinical significance. Methods Clinical nutritional status was assessed in 548 singleton term babies. Nine superficial, rapidly detected signs of malnutrition were taken for the clinical assessment nutritional status score (CANSCORE). FM was diagnosed if the total score was less than or equal to 24. Results Among 40 SGA, 21(52.5%) were FM, the other 19 (47.5%) were not FM with scores more than 24, whereas 13(2.8%) out of 508 AGA (appropriate for gestational age) were FM. Conclusion SGA and FM are not synonymous and FM can be rapidly determined by the CANSCORE. Biochemical and ultrasonic studies should be done in high risk preg nancy during second trimester to discover FM and intervene by nutritional treatment to prevent the infants with FM.

DISPLAY OPTIONS

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share