Publications by authors named "Qingling Duan"

Background: Disentangling preschool wheezing heterogeneity in terms of clinical traits, temporal patterns, and collective healthcare burden is critical for precise and effective interventions.

Objective: We aimed to collectively define contributions and distinct characteristics of respiratory phenotypes based on longitudinal wheeze and atopic sensitization patterns in the first 5 years of life.

Methods: Group-based trajectory analysis was performed in the CHILD Cohort study to identify distinct wheeze and allergic sensitization trajectories.

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Biological rhythms control gene expression, but effects on central nervous system (CNS) cells and structures remain poorly defined. While circadian (24-hour) rhythms are most studied, many genes have periods of greater and less than 24-hours; these fluctuations can be both site- and cell-specific. Identifying patterns of gene rhythmicity across the CNS is necessary for both the study of chronobiology and to make sense of data obtained in the laboratory.

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Public health crises triggered by viral infections pose severe threats to individual health and disrupt global socioeconomic systems. Against the backdrop of global pandemics caused by highly infectious diseases such as COVID-19 and Ebola virus disease (EVD), the development of innovative prevention and treatment strategies has become a strategic priority in the field of biomedicine. Neutralizing antibodies, as biological agents, are increasingly recognized for their potential in infectious disease control.

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Background: The use of cannabis has been associated with both therapeutic and harmful effects. As with cigarette smoking, cannabis smoking may affect the epigenetic regulation (e.g.

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Background: Gut microbiota has been associated with health and susceptibility to childhood diseases, including asthma and allergies. However, the genomic factors contributing to interindividual variations in gut microbiota remain poorly understood.

Objective: We sought to integrate host genomics with early-life exposures to investigate main and interaction effects on gut microbiota during the first year of life.

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Advanced metastatic colorectal cancer (CRC) with deficient DNA mismatch repair (MMR-d), or immune-hot CRCs, show significantly improved clinical outcomes compared to MMR-proficient (MMR-p), or immune-cold CRCs. While the prior represents about 5% of all CRCs, the latter represent 95% and are characterized by low immunogenicity. This study investigates bis-diethyldithiocarbamate (CuET), a novel anticancer compound, and its impact on the colorectal cancer tumor microenvironment (TME).

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Background: The role of epigenetic ageing in the environmental pathogenesis and prognosis of fibrotic interstitial lung disease (fILD) is unclear. We evaluated whether ambient particulate matter with diameter ≤2.5 μm (PM) and neighbourhood disadvantage exposures are associated with accelerated epigenetic ageing, and whether epigenetic age is associated with adverse clinical outcomes in patients with fILD.

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Article Synopsis
  • - The CHILD Cohort Study is a long-term Canadian research project tracking the health and development of infants from pregnancy until adulthood, focusing on how early life environments affect disease outcomes like asthma and developmental issues.
  • - The study involves detailed measurements and data collection including biological samples, environmental assessments, and psychosocial factors, with a strong participant retention rate over the years.
  • - A sub-cohort was created during the COVID-19 pandemic to examine its impact on families, and the next major assessment phase will occur from 2022 to 2025, contributing valuable insights into chronic diseases and health complexities.
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  • The study hypothesizes that better cardiorespiratory fitness (CRF) can slow down aging, especially in people with chronic airflow limitation (CAL).
  • Researchers analyzed DNA methylation and conducted exercise tests on 78 participants aged 40 and older to see how CRF impacts biological aging.
  • Findings showed that higher initial CRF was linked to slower aging according to various epigenetic markers, suggesting that improving CRF could benefit health in those with chronic respiratory issues.
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  • The study investigates the impact of the human milk microbiota (HMM) on the long-term health of children, particularly focusing on asthma and allergic conditions like atopy.
  • Researchers followed 885 mothers and their children from birth to age 5, linking HMM composition to the mothers' genetics and children's health outcomes.
  • Findings suggest that certain bacterial communities in human milk, especially decreased diversity and increased Lawsonella, are correlated with higher rates of childhood atopy and asthma, highlighting the genetic influence on HMM composition.
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Background: Sress early in life has been linked to visceral hyperalgesia and associated functional gastrointestinal disorders. In a mouse model of visceral hyperalgesia, we investigated whether the EphB2 receptor and its EphrinB2 ligand in spinal cord contribute to dysregulation of glia-neuron interactions.

Methods: An established mouse model of stress due to maternal separation (MS).

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Article Synopsis
  • This study explores the relationship between maternal genetics, human milk oligosaccharides (HMOs), and respiratory health in infants fed human milk.
  • Researchers quantified 19 HMOs from 980 mothers and identified genetic markers linked to HMOs on several chromosomes, including notable findings on chromosomes 19 and 3.
  • The study suggests that certain HMOs may help reduce the risk of respiratory issues, like recurrent wheezing, in preschoolers, depending on their genetic predispositions.
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The ovaries and uterus are crucial reproductive organs in mammals, and their coordinated development ensures the normal development of sexual maturity and reproductive capacity. This study aimed to comprehensively capture the different physiological stages of the goat's sexual maturation by selecting four specific time points. We collected samples of ovarian and uterine tissues from five female Jining Gray goats at each time point: after birth (D1), 2-month-old (M2), 4-month-old (M4), and 6-month-old (M6).

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  • Dysanapsis is the mismatch between airway size and lung size that can lead to COPD risk; it first appears early in life.
  • Researchers analyzed genetic factors linked to dysanapsis through a genome-wide association study involving over 11,000 adults.
  • They found specific genetic variants and developed a genetic risk score that correlated with obstructive lung function in both children and adults, suggesting dysanapsis may connect genetic factors to lung health issues across a person's life.
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Background: Evidence suggests that prenatal air pollution exposure alters DNA methylation (DNAm), which could go on to affect long-term health. It remains unclear whether DNAm alterations present at birth persist through early life. Identifying persistent DNAm changes would provide greater insight into the molecular mechanisms contributing to the association of prenatal air pollution exposure with atopic diseases.

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During adolescence, a second period of central nervous system (CNS) plasticity that follows the fetal period, which involves sleep deprivation (SD), becomes apparent. SD during adolescence may result in abnormal development of neural circuits, causing imbalance in neuronal excitation and inhibition, which not only results in pain, but increases the chances of developing emotion disorders in adulthood, such as anxiety and depression. The quantity of surgeries during adolescence is also consistently on the rise, yet the impact and underlying mechanism of preoperative SD on postoperative pain remain unexplored.

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This study conducted transcriptome sequencing of goat-mammary-gland tissue at the late lactation (LL), dry period (DP), and late gestation (LG) stages to reveal the expression characteristics and molecular functions of circRNAs during mammary involution. A total of 11,756 circRNAs were identified in this study, of which 2528 circRNAs were expressed in all three stages. The number of exonic circRNAs was the largest, and the least identified circRNAs were antisense circRNAs.

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To understand how genes precisely regulate lactation physiological activity and the molecular genetic mechanisms underlying mammary gland involution, this study investigated the transcriptome characteristics of goat mammary gland tissues at the late gestation (LG), early lactation (EL), peak lactation (PL), late lactation (LL), dry period (DP), and involution (IN) stages. A total of 13,083 differentially expressed transcripts were identified by mutual comparison of mammary gland tissues at six developmental stages. Genes related to cell growth, apoptosis, immunity, nutrient transport, synthesis, and metabolism make adaptive transcriptional changes to meet the needs of mammary lactation.

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Long noncoding RNA (lncRNA) can regulate mammary gland development and lactation physiological activities. However, the molecular genetic mechanisms of lncRNA in mammary gland involution and cell remodeling remain unclear. This work analyzed the expression characteristics and molecular functions of lncRNA in goat mammary gland tissue at the late lactation (LL), dry period (DP), and late gestation (LG) stages.

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With the development of the Internet of things and smart grid technologies, modern electricity markets seamlessly connect demand response to the spot market through price-responsive loads, in which the trading strategy of load aggregators plays a crucial role in profit capture. In this study, we propose a deep reinforcement learning-based strategy for purchasing and selling electricity based on real-time electricity prices and real-time demand data in the spot market, which maximizes the revenue of load aggregators. The deep deterministic policy gradient (DDPG) is applied through a bidirectional long- and short-term memory (BiLSTM) network to extract the market state features that are used to make trading decisions.

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As a vital metabolic and immune organ in animals, the liver plays an important role in protein synthesis, detoxification, metabolism, and immune defense. The primary research purpose of this study was to reveal the effect of breast-feeding, weaning transition, and weaning on the gene expression profile in the goat kid liver and to elucidate the transcriptome-level signatures associated with liver metabolic adaptation. Therefore, transcriptome sequencing was performed on liver tissues, which was collected at 1 day (D1), 2 weeks (W2), 4 weeks (W4), 8 weeks (W8), and 12 weeks (W12) after birth in Laiwu black goats at five different time-points, with five goats at each time point.

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With the consumption of new energy and the variability of user activity, accurate and fast demand forecasting plays a crucial role in modern power markets. This paper considers the correlation between temperature, wind speed, and real-time electricity demand and proposes a novel method for forecasting short-term demand in the power market. Kernel Support Vector Machine is first used to classify real-time demand in combination with temperature and wind speed, and then the temporal convolutional network (TCN) is used to extract the temporal relationships and implied information of day-ahead demand.

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Background: Wheezing in early life is associated with asthma in adulthood; however, the determinants of wheezing trajectories and their associations with asthma and lung function in childhood remain poorly understood.

Objective: In the CHILD Cohort Study, we aimed to identify wheezing trajectories and examine the associations between these trajectories, risk factors, and clinical outcomes at age 5 years.

Methods: Wheeze data were collected at 8 time points from 3 months to 5 years of age.

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Synopsis of recent research by authors named "Qingling Duan"

  • - Qingling Duan's research primarily focuses on the interplay between genetics, environmental factors, and health outcomes, particularly in relation to early life development, maternal influences, and chronic diseases.
  • - Recent studies include investigations into the effects of human milk microbiota and oligosaccharides on childhood asthma and respiratory health, as well as the relationship between epigenetic aging and cardiorespiratory fitness in individuals with airflow limitation.
  • - Additionally, findings highlight the significant impact of maternal genetics on the composition of human milk and its implications for infant health, along with the effects of early life stress on neuro-inflammatory processes in animal models.