Perinatal factors influencing mother-to-child HBV transmission

Chen, Fei; Li, Xiaoqing; Tian, Yuan; Chen, Jinjin; Wang, Yu; Yu, Guangjun

doi:10.4066/biomedicalresearch.29-17-3138

Cited by 2 publications

(3 citation statements)

References 19 publications

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“…Also, it is still unclear whether this difference could have been due to a higher risk of perinatal transmission of HBV in males. Some studies have reported that the male sex was associated with a higher risk of perinatal transmission of HBV (Li et al, 2014;Siakwa et al, 2016), while other studies have found no difference in HBV transmission between the sexes in infants (Agbede et al, 2007;Chen et al, 2018a;Zhang et al, 2014). Sexual HBV transmission is a plausible explanation for the higher risk of HBsAg among males, since most of the male participants reported practicing anal sex, which has also been associated with HBsAg positivity (Lange et al, 1990).…”

Section: Discussionmentioning

confidence: 99%

Prevalence and factors associated with hepatitis B and D virus infections among migrant sex workers in Chiangmai, Thailand: A cross-sectional study in 2019

Hongjaisee

Khamduang

Sripan

et al. 2020

International Journal of Infectious Diseases

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To determine the prevalence of hepatitis B surface antigen (HBsAg) and antibody to hepatitis delta virus (anti-HDV) and associated factors among migrant sex workers in Chiangmai, Thailand. Methods: This cross-sectional study was conducted at various sexual entertainment venues in Chiangmai, Thailand, in 2019. Consenting participants were interviewed using a questionnaire, and plasma was tested for hepatitis B virus (HBV) markers (DiaSorin, Italy) and anti-HDV antibody (DIA.PRO Diagnostic Bioprobes, Italy), if HBsAg-positive. Associations between HBsAg positivity or HDV antibody and potential factors were examined using univariable and multivariable logistic regression analysis. Results: A total of 396 migrant sex workers, half of them female, were recruited between February and September 2019. Their median age was 25 years (interquartile range 22-30 years) and 95% were Burmese. Overall, HBsAg prevalence was 11.4%; 8.1% in females and 14.7% in males (Chi-square, p = 0.040). One-third were still susceptible to HBV. No HBsAg-positive participants had anti-HDV antibodies. HBsAg positivity was associated with being male (adjusted odds ratio (aOR) 3.01, 95% confidence interval (CI) 1.25-7.68, p = 0.014), having attended school (aOR 4.50, 95% CI 1.26-15.98, p = 0.020), being separated/ divorced/widowed (aOR 5.77, 95% CI 1.48-22.52, p = 0.012), and having unprotected sex (aOR 3.38, 95% CI 1.31-8.71, p = 0.012). Conclusions: In this young population, higher HBsAg prevalence in males may be related to sexual transmission, indicating the need for HBV screening programs linked with HBV prevention and care.

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Section: Discussionmentioning

confidence: 99%

Prevalence and factors associated with hepatitis B and D virus infections among migrant sex workers in Chiangmai, Thailand: A cross-sectional study in 2019

Hongjaisee

Khamduang

Sripan

et al. 2020

International Journal of Infectious Diseases

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“…Density is an important parameter to measure performance and influences the mechanical properties of bamboo [20]. Fourier transform infrared spectroscopy (VERTEX 80V infrared spectrometer, Bruker, Karlsruhe, Germany) was used to study the gradient changes in its chemical properties.…”

Section: Density and Vascular Bundle Distributionmentioning

confidence: 99%

“…Density is an important parameter to measure performance and influences the mechanical properties of bamboo [20].…”

Section: Density and Vascular Bundle Distributionmentioning

confidence: 99%

Gradient Variation and Correlation Analysis of Physical and Mechanical Properties of Moso Bamboo (Phyllostachys edulis)

Jiang,

Feng,

Xia

et al. 2024

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This study aimed to investigate the gradient properties of bamboo at the microscopic level and provide a basis for improving the utilization rate of bamboo. Using moso bamboo (Phyllostachys edulis (Carrière) J. Houz.) as a research subject, the variation of vascular bundle area percentage, chemical content, relative crystallinity (CR), mechanical properties of different bamboo slivers, and correlation between those parameters were analyzed. From the bamboo green layer (BGL) to the bamboo yellow layer (BYL), the distribution of vascular bundles changed from dense to sparse. Cellulose and lignin mass content decreased gently, and hemicellulose mass content showed gradual increases. The CR showed an order of bamboo middle layer (BML) > BGL > BYL. The tensile modulus of elasticity, tensile strength, bending modulus of elasticity, and bending strength decreased from BGL to BYL. The order of influence degree on mechanical properties of moso bamboo was vascular bundle area, hemicellulose content, lignin mass content, density, and CR, and these factors correlated with mechanical properties at a significant level (p < 0.05). Vascular bundle area had a decisive effect on the mechanical properties of bamboo. The vascular bundle area and density were linearly correlated with mechanical properties, while the lignin mass content and CR were curve-linearly correlated with mechanical properties.

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Perinatal factors influencing mother-to-child HBV transmission

Cited by 2 publications

References 19 publications

Prevalence and factors associated with hepatitis B and D virus infections among migrant sex workers in Chiangmai, Thailand: A cross-sectional study in 2019

Prevalence and factors associated with hepatitis B and D virus infections among migrant sex workers in Chiangmai, Thailand: A cross-sectional study in 2019

Gradient Variation and Correlation Analysis of Physical and Mechanical Properties of Moso Bamboo (Phyllostachys edulis)

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