An ADAM33 Polymorphism Associates with Progression of Preschool Wheeze into Childhood Asthma: A Prospective Case-Control Study with Replication in a Birth Cohort Study

Background: Placenta plays a very important role in the growth and development of fetus. Objective: To know the correlation between placental weight and perinatal outcome in term antenatal women. Methods: Present prospective case-control study was conducted in the rural tertiary center of Northern India over one year (January-December 2018) on 1,118 term (≥37-≤42 weeks) antenatal women with singleton pregnancy fulfilling inclusion criteria with 559 women with high-risk pregnancy as cases and 559 low-risk pregnant women as controls. Placental weight, birth weight was measured immediately after delivery and compared between the two groups along with gestation, parity, fetal gender, and neonatal outcome. Statistical analysis was done using SPSS 22 version. Results: Mean placental weight [481.98±67.83 gm vs. 499.47±59.59 gm (p=.000)] and birth weight [2.68±0.53 Kg vs. 2.88±0.4 Kg (p=.000)] was significantly lower in high risk as compared to lowrisk participants, whereas placental birth weight ratio was higher in high-risk cases [18.35±2.37 vs. 17.41±1.38 (p=.000)] respectively. Placental weight was positively correlated with birth weight and placental weight and birth weight increased with increasing gestation in both cases and controls. Male neonates had higher placental weight [492.74±68.24 gm vs. 488±58.8 gm (p=0.224)] and birth weight [2.81±0.5 Kg vs. 2.74±0.45 Kg (p=0.033)] as compared to females. Neonatal Intensive Care Unit admission was significantly associated with low placental and birth weight (p=.000). Conclusion: There is a significant correlation between placental weight, birth weight and neonatal outcome, hence placental weight can be used as an indirect indicator of intrauterine fetal growth.

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Nasal Mucociliary Clearance in Prolonged Tracheostomy Patients: A Prospective Case–Control Study

Indian Journal of Otolaryngology and Head & Neck Surgery ◽

10.1007/s12070-021-02625-6 ◽

2021 ◽

Author(s):

Prerit Rao ◽

Rohit Singh ◽

R. Balakrishnan ◽

Dipak Ranjan Nayak

Keyword(s):

Mucociliary Clearance ◽

Case Control Study ◽

Case Control ◽

Control Study ◽

Nasal Mucociliary Clearance ◽

Prospective Case Control Study

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Household mold exposure interacts with inflammation-related genetic variants on childhood asthma: a case–control study

BMC Pulmonary Medicine ◽

10.1186/s12890-021-01484-9 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Yu Zhang ◽

Li Hua ◽

Quan-Hua Liu ◽

Shu-Yuan Chu ◽

Yue-Xin Gan ◽

...

Keyword(s):

Childhood Asthma ◽

Case Control Study ◽

Additive Model ◽

Case Control ◽

Nucleotide Polymorphisms ◽

Additive Interaction ◽

Asthmatic Children ◽

Gene Environment ◽

Mold Exposure ◽

Control Study

Abstract Background A number of studies have examined the association between mold exposure and childhood asthma. However, the conclusions were inconsistent, which might be partly attributable to the lack of consideration of gene function, especially the key genes affecting the pathogenesis of childhood asthma. Research on the interactions between genes and mold exposure on childhood asthma is still very limited. We therefore examined whether there is an interaction between inflammation-related genes and mold exposure on childhood asthma. Methods A case–control study with 645 asthmatic children and 910 non-asthmatic children aged 3–12 years old was conducted. Eight single nucleotide polymorphisms (SNPs) in inflammation-related genes were genotyped using MassARRAY assay. Mold exposure was defined as self-reported visible mold on the walls. Associations between visible mold exposure, SNPs and childhood asthma were evaluated using logistic regression models. In addition, crossover analyses were used to estimate the gene-environment interactions on childhood asthma on an additive scale. Results After excluding children without information on visible mold exposure or SNPs, 608 asthmatic and 839 non-asthmatic children were included in the analyses. Visible mold exposure was reported in 151 asthmatic (24.8%) and 119 non-asthmatic children (14.2%) (aOR 2.19, 95% CI 1.62–2.97). The rs7216389 SNP in gasdermin B gene (GSDMB) increased the risk of childhood asthma with each C to T substitution in a dose-dependent pattern (additive model, aOR 1.32, 95% CI 1.11–1.57). Children carrying the rs7216389 T allele and exposed to visible mold dramatically increased the risk of childhood asthma (aOR 3.21; 95% CI 1.77–5.99). The attributable proportion due to the interaction (AP: 0.47, 95% CI 0.03–0.90) and the relative excess risk due to the interaction (RERI: 1.49, 95% CI 0–2.99) were statistically significant. Conclusions In the present study, there was a significant additive interaction between visible mold exposure and rs7216389 SNP on childhood asthma. Future studies need to consider the gene-environment interactions when exploring the risk factors of childhood asthma.

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