Variation in vitamin D status in infants and children: a two-year cross-sectional study in Shanghai, China.

Background: Vitamin D deficiency (VDD) is a public health problem. The variation in vitamin D status across regions and populations remains unclear, and there is a lack of consensus regarding the screening for VDD in individuals.

Methods: Children who visited the hospital from January 2019 to December 2020 were included in this study.

Advanced neonatal medicine in China: Is newborn ward capacity associated with inpatient antibiotic usage?

Previous surveys of neonatal medicine in China have not collected comprehensive information on antibiotic use in newborns. The goal of the present study was to assess the trends in antibiotic use in inpatient newborns from advanced hospitals in mainland China and to evaluate the contributing factors. We extracted retrospective data on newborn clinical units from a database containing key clinical subspecialty area indicators from provincial or ministerial (Class A level III) hospitals over three consecutive years (2008-2010) and in 25 of 31 provincial districts of mainland China.

Prenatal determinants of childhood obesity: a review of risk factors .

Childhood obesity is a predictor of adult obesity and has its roots in the pre-pregnancy or pregnancy period. This review presents an overview of the prenatal risk factors for childhood obesity, which were categorized into 2 groups: biological risk factors (maternal pre-pregnancy body mass index, gestational weight gain, diabetes in pregnancy, and caesarean section), and environmental and behavioural risk factors (maternal smoking and exposure to obesogens, maternal dietary patterns, maternal intestinal microbiome and antibiotics exposure, and maternal psychosocial stress). Identifying modifiable predisposing prenatal factors for obesity will inform further development of inventions to prevent obesity over the life course, and future directions for research and intervention are discussed.

Lower maternal and fetal vitamin D status and higher placental and umbilical vitamin D receptor expression in preeclamptic pregnancies.

Objective: To explore associations between maternal and fetal vitamin D status in preeclamptic pregnancies.

Methods: A case-control experiment was carried out with proportion ratio of 1:1 (controls: n = 60 vs cases: n = 60). Blood collection of both maternal and cord were performed before and during delivery, respectively, and 25(OH)D measurement was conducted.

[Vitamin D level at birth and influencing factors in preterm infants].

Objective: To investigate vitamin D level at birth and possible influencing factors in preterm infants.

Methods: A total of 600 preterm infants were enrolled, and venous blood samples were collected within 24 hours after birth to measure the serum level of 25-hydroxyvitamin D [25(OH)D]. The effect of sex, birth weight, birth season, gestational age, mother's age, body mass index (BMI) in early pregnancy, delivery mode, and complications during pregnancy on serum 25(OH)D level was analyzed.

Advanced neonatal medicine in China: a quantitative analysis of research productivity and impact factors.

Objectives: To summarize academic productivity of neonatal medicine in China and explore its relationship with health care workforce and activities.

Methods: We retrospectively extracted data from national key clinical subspecialty proposals, and used accessible databases as Science Citation Index (SCI), PubMed, and National Natural Science Foundation of China.

Results: Between 2008 and 2010, 61 newborn units at the most advanced level in 31 cities from 28 of 31 provincial districts in mainland China were included.

Advanced Neonatal Medicine in China: A National Baseline Database.

Previous surveys of neonatal medicine in China have not collected comprehensive information on workforce, investment, health care practice, and disease expenditure. The goal of the present study was to develop a national database of neonatal care units and compare present outcomes data in conjunction with health care practices and costs. We summarized the above components by extracting data from the databases of the national key clinical subspecialty proposals issued by national health authority in China, as well as publicly accessible databases.

Low maternal vitamin D status during the second trimester of pregnancy: a cross-sectional study in Wuxi, China.

Background: Vitamin D deficiency is common in pregnant women, but an optimal serum vitamin D level during pregnancy has not been determined and remains an area of active research. Vitamin D data from large populations of pregnant Chinese women are still limited.

Objective: To evaluate the vitamin D status of women in Eastern China during the second trimester of pregnancy.

Parent-adolescent interaction and risk of adolescent internet addiction: a population-based study in Shanghai.

Background: Family-based intervention is essential for adolescents with behavioral problems. However, limited data are available on the relationship between family-based factors and adolescent internet addiction (AIA). We aimed to examine this relationship using a representative sample of Shanghai adolescents.

Personal characteristics related to the risk of adolescent internet addiction: a survey in Shanghai, China.

Background: Paralleling the rapid growth in computers and internet connections, adolescent internet addiction (AIA) is becoming an increasingly serious problem, especially in developing countries. This study aims to explore the prevalence of AIA and associated symptoms in a large population-based sample in Shanghai and identify potential predictors related to personal characteristics.

Methods: In 2007, 5,122 adolescents were randomly chosen from 16 high schools of different school types (junior, senior key, senior ordinary and senior vocational) in Shanghai with stratified-random sampling.

Bone measurements of infants in the first 3 months of life by quantitative ultrasound: the influence of gestational age, season, and postnatal age.

Background: There are a few quantitative ultrasound (QUS) studies of bone status for Chinese children.

Objective: To evaluate the clinical application and to investigate the bone status of neonates and young infants with QUS.

Materials And Methods: An ultrasound bone sonometer was used to measure the bone speed of sound (SOS) of the tibia in 542 neonates within 3 months of birth.

[Examination of infant bone status with quantitative ultrasound at birth].

Objective: Quantitative ultrasound (QUS) is a new method of evaluating Children's bone status, including bone mineral density and bone strength. The bone nutrition during fetal and early neonatal period is very important for the human bone development of whole life. The objective of this study was to evaluate the clinical application of QUS for newborn infants and to obtain the QUS data for normal neonates including premature infants.