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Objective: To explore whether there are differences in the levels of protein, glucose and blood lipids in umbilical vein and umbilical artery blood of newborns with different delivery modes, and to evaluate their value as indicators of fetal intrauterine nutrition and nutritional support., Methods: A total of 89 pairs of mothers and infants who were delivered in Danyang People's Hospital of Jiangsu Province from June to September 2021 were selected as the study subjects, including 38 cases of spontaneous delivery and 51 cases of cesarean section. The basic information of pregnant women, pregnancy information, newborn delivery and physical examination information were extracted from the medical record information system of the hospital. According to the mode of delivery, HITACHI 7600 automatic biochemical analyzer was used to measure the levels of protein, glucose and blood lipids in umbilical vein and umbilical artery blood, including total protein(TP), albumin(ALB), glucose(GLU), total cholesterol(TC), triglyceride(TG), high density lipoprotein cholesterol(HDL-C), low density lipoprotein cholesterol(LDL-C). The data were statistically analyzed using IBM SPSS Statistics 26.0 statistical software., Results: The levels of TP, ALB, GLU, TC, TG, HDL-C and LDL-C in the umbilical vein blood of the spontaneous delivery group were(56.40±5.83)g/L, (38.41±3.43)g/L, (4.55±1.53)mmol/L, (1.68±0.42)mmol/L, (0.25±0.11)mmol/L, (0.84±0.17)mmol/L and(0.69±0.23)mmol/L, respectively. The levels of TP, ALB, GLU, TC, TG, HDL-C and LDL-C in umbilical artery blood were(56.49±9.91)g/L, (37.72±4.77)g/L, (4.07±1.52)mmol/L, (1.60±0.42)mmol/L, (0.24±0.10)mmol/L, (0.80±0.18)mmol/L and(0.68±0.24)mmol/L, respectively. The levels of TP, ALB, GLU, TC, TG, HDL-C and LDL-C in umbilical vein blood of cesarean section group were(52.08±4.12)g/L, (36.12±2.13)g/L, (3.45±1.16)mmol/L, (1.61±0.39)mmol/L, (0.19±0.08)mmol/L, (0.82±0.18)mmol/L and(0.61±0.20)mmol/L, respectively. The levels of TP, ALB, GLU, TC, TG, HDL-C and LDL-C in umbilical artery blood were(51.49±7.59)g/L, (35.40±3.60)g/L, (3.09±1.15)mmol/L, (1.48±0.40)mmol/L, (0.19±0.08)mmol/L, (0.78±0.18)mmol/L and(0.60±0.20)mmol/L, respectively. The levels of TP, ALB, Glu and TG in cord vein blood and cord artery blood in spontaneous labor group were significantly higher than those in cesarean section group(P<0.05); The levels of Glu, TC, TG and HDL-C in cord vein blood were significantly higher in spontaneous labor group and cesarean section group than those in cord artery blood(P<0.05)., Conclusion: The levels of protein, glucose and blood lipids in umbilical vein and umbilical artery blood were different among different delivery modes.

Objective: To investigate the difference of cortical hormones in cord artery and vein blood of newborns with different delivery modes., Methods: A total of 65 pregnant women who delivered in the People's Hospital of Danyang City, Jiangsu Province from June to September 2021 were selected as the study subjects, including 26 cases of spontaneous delivery and 39 cases of cesarean section. The basic information of 65 pregnant women and newborns was collected by questionnaire survey. According to the mode of delivery, the levels of corticosteroids in umbilical vein and umbilical artery blood were determined by liquid chromatography-tandem mass spectrometry(LC-MS/MS), including corticosterone, 11-desoxycorticosterone, aldosterone, cortisol, 11-deoxycortisol and cortisone. The data were statistically analyzed using IBM SPSS Statistics 26.0 statistical software., Results: The levels of cortisol, 11-deoxycortisol, aldosterone, cortisol, 11-deoxycortisol and cortisone in the umbilical vein blood of the spontaneous delivery group were(2.44±1.87), (0.64±0.29), (0.49±0.35), (54.95±40.80), (3.20±1.23) and(142.27±57.42)ng/mL, respectively. The levels of corticosterone, 11-deoxycortisol, aldosterone, cortisol, 11-deoxycortisol and cortisone in umbilical artery blood were(4.51±4.47), (0.57±0.28), (0.42±0.29), (60.79±45.53), (2.69±1.25) and(123.10±46.32)ng/mL, respectively. The levels of corticosterone, 11-deoxycortisone, aldosterone, cortisol, 11-deoxycortisone and cortisone in umbilical vein blood of cesarean section group were(0.94±1.09), (0.47±0.14), (0.26±0.14), (22.63±19.82), (2.30±0.90) and(84.51±29.49)ng/mL, respectively. The levels of corticosterone, 11-deoxycortisol, aldosterone, cortisol, 11-deoxycortisol and cortisone in umbilical artery blood were(2.22±2.24), (0.43±0.17), (0.27±0.14), (30.09±25.93), (1.87±0.76) and(75.03±24.90)ng/mL, respectively. The levels of corticosterone, 11-desoxycorticosterone, aldosterone, cortisol, 11-deoxycortisol and cortisone in cord vein blood and cord artery blood in spontaneous labor group were significantly higher than those in cesarean section group(P<0.05). The levels of corticosterone and cortisol in cord vein blood were significantly lower in spontaneous labor group and cesarean section group than those in cord artery blood(P<0.05), the levels of 11-desoxycorticosterone, 11-deoxycortisol and cortisone in cord vein blood were significantly higher in spontaneous labor group and cesarean section group than those in cord artery blood(P<0.05)., Conclusion: There are differences in the level of cortical hormones in cord artery and vein blood in different delivery modes.

Objective: Meta-analysis was used to study the validity of image-based dietary assessment(IBDA) in evaluating energy and macronutrients intake, and compared with three traditional method: weighed food record(WFR), 24-hour dietary recall(24-HDR) and double-labeled water(DLW)., Methods: Studies were retrieved and collected from various databases including China National Knowledge Infrastructure(CNKI), WanFang Database, VIP Database, PubMed, Web of Science, Cochrane Library and Embase, screened according to the inclusion and exclusion criteria. After extracting the data, all the data were Meta-analyzed through RevMan 5.4., Results: A total of 24 studies were included. Meta-analysis showed that, comparison of IBDA method and traditional method in energy intake assessment[MD=-54.71 kcal/d(95%CI-118.81-9.39), P=0.09], comparison of carbohydrate intake assessment[MD=-2.77 g(95%CI-8.86-3.31), P=0.37], comparison of protein intake assessment[MD=0.00 g(95%CI-2.09-2.09), P>0.05], comparison of fat intake assessment[MD=0.10 g(95%CI-2.06-2.25), P=0.93], these differences were not statistically significant. Subgroup analysis showed that, IBDA method compared with the 24-hour dietary review method in protein intake(P=0.01), the difference was statistically significant. IBDA method overestimated protein intake by about 7.3% on average compared with the 24-hour dietary review method., Conclusion: There was no significant difference between IBDA method and traditional method in the assessment of energy and macronutrient intakes.