The effect of skin-to-skin contact on early initiation of breastfeeding among women in Vietnam.

AIM: To describe prevalence of early initiation of breastfeeding and associated factors among Vietnamese mothers. METHODS: A self-administered questionnaire was used to survey 1812 mothers whose infants were aged 0 to less than 30 months in multi-center Vietnam. Multivariate logistic regression was performed to identify factors associated independently with early initiation of breastfeeding. RESULTS: Prevalence of early initiation of breastfeeding was 57.2 % and this prevalence was higher in female infants compared with male infants (p = 0.004). Factors associated with increased odds of early initiation of breastfeeding include female infants (aOR: 1.33; 95%CI: 1.06 to 1.68) living in urban areas (aOR: 1.34, 95%CI: 1.05 to 1.71), giving birth in private hospitals (aOR: 1.94, 95%CI: 1.25 to 3.03), vaginal birth (aOR: 1.70, 95%CI: 1.34 to 2.16). Factors associated with decreased odds of early initiation of breastfeeding include higher educational level, mother's weight gain during pregnancy, and infant complication at birth. Compared with mothers who had not experienced skin-to-skin contact with their babies, the prevalence of early initiation of breastfeeding was higher in mothers who experienced <15 min (aOR: 2.03, 95%CI: 1.32 to 3.14), 15-90 min (aOR: 6.33, 95%CI: 4.11 to 9.76), and >90 min (aOR: 10.98, 95%CI: 6.79 to 17.75). CONCLUSION: Focusing on modifiable factors should be a key priority to help improve early initiation of breastfeeding practice.

Scalable and Uniform Fabrication of Dexamethasone-Eluting Depot-Engineered Stem Cell Spheroids as a Microtissue Construct to Target Bone Regeneration.

Potentiation of stem cell potency is critical for successful tissue engineering, especially for bone regeneration. Three-dimensional cell culture and bioactive molecule co-delivery with cells have been proposed to achieve this effect. Here, we provide a uniform and scalable fabrication of osteogenic microtissue constructs of mesenchymal stem cell (MSC) spheroids surface-engineered with dexamethasone-releasing polydopamine-coated microparticles (PD-DEXA/MPs) to target bone regeneration. The microparticle conjugation process was rapid and cell-friendly and did not affect the cell viability or key functionalities. The incorporation of DEXA in the conjugated system significantly enhanced the osteogenic differentiation of MSC spheroids, as evidenced by upregulating osteogenic gene expression and intense alkaline phosphatase and alizarin red S staining. In addition, the migration of MSCs from spheroids was tested on a biocompatible macroporous fibrin scaffold (MFS). The result showed that PD-DEXA/MPs were stably anchored on MSCs during cell migration over time. Finally, the implantation of PD-DEXA/MP-conjugated spheroid-loaded MFS into a calvarial defect in a mouse model showed substantial bone regeneration. In conclusion, the uniform fabrication of microtissue constructs containing MSC spheroids with drug depots shows a potential to improve the performance of MSCs in tissue engineering.

The mutation spectrum of SLC25A13 gene in citrin deficiency: identification of novel mutations in Vietnamese pediatric cohort with neonatal intrahepatic cholestasis.

BACKGROUND: Citrin deficiency (CD), a disorder caused by mutations in the SLC25A13 gene, may result in neonatal intrahepatic cholestasis. This study was purposely to explore the mutation spectrum of SLC25A13 gene in Vietnamese CD patients. METHODS: The 292 unrelated CD patients were first screened for four high-frequency mutations by PCR/PCR-RFLP. Then, Sanger sequencing was performed directly for heterozygous or undetected patients. Novel mutations identified would need to be confirmed by their parents. RESULTS: 12 pathogenic SLC25A13 mutations were identified in all probands, including three deletions c.851_854del (p.R284Rfs*3), c.70-63_133del (p.Y24_72Ifs*10), and c.[1956C>A;1962del] (p.[N652K;F654Lfs*45]), two splice-site mutations (IVS6+5G>A and IVS11+1G>A), one nonsense mutations c.1399C>T (p.R467*), one duplication mutation c.1638_1660dup (p.A554fs*570), one insertion IVSl6ins3kb (p.A584fs*585), and four missense mutation c.2T>C (p.M1T), c.1231G>A (p.V411M), c.1763G>A (p.R588Q), and c.135G>C (p.L45F). Among them, c.851_854del (mut I) was the most identified mutant allele (91.78%) with a total of 247 homozygous and 42 heterozygous genotypes of carriers. Interestingly, two novel mutations were identified: c.70-63_133del (p.Y24_72Ifs*10) and c.[1956C>A;1962del] (p.[N652K;F654Lfs*45]). CONCLUSION: The SLC25A13 mutation spectrum related to intrahepatic cholestasis infants in Vietnam revealed a quite similar pattern to Asian countries' reports. This finding supports the use of targeted SLC25A13 mutation for CD screening in Vietnam and contributed to the SLC25A13 mutation spectra worldwide. It also helps emphasize the role of DNA analysis in treatment, genetic counseling, and prenatal diagnosis.

Factors associated with the very high caesarean section rate in urban areas of Vietnam.

BACKGROUND: Caesarean section and associated factors require detailed investigation globally. This study aims to determine the rate and associated factors of caesarean deliveries in urban areas of Vietnam. METHODS: A cross-sectional study using questionnaire answered by women who had infants aged under 30 months was conducted from March to May 2021. Data were collected in 18 commune health centres in two cities during the day of routine immunization. Multivariable logistic regression was performed to assess factors associated with caesarean section. RESULTS: The overall caesarean section rate was 49.6%. The caesarean section rate in private hospitals (57.8%) were significantly higher than in public hospitals (49.1%). Caesarean section rate in first-time mothers (47.1%) were as high as this rate among mothers who had given birth before (50.6%). Factors associated with higher rate of caesarean section include increasing in women's age, pre-pregnancy body mass index, gestational weight gain, and infant's birth weight; first-time mothers; mothers living in urban areas; and mothers giving birth in private hospitals. CONCLUSIONS: This study revealed a high rate of caesarean deliveries in urban areas of Vietnam. Comprehensive investigations of both medical and non-medical reasons for caesarean deliveries in Vietnam are urgent needs to shape the prioritized interventions.