Dysregulation of hair-strand-based elemental biodynamics in amyotrophic lateral sclerosis.

Background: Amyotrophic lateral sclerosis (ALS) is a rare motor neurodegenerative disorder and is predominantly diagnosed in older adults. Altered levels of essential and toxic elements have been implicated in ALS pathophysiology; however, little is known about the longitudinal biodynamic patterns of these elements in patients with ALS.

Methods: Using a single individual hair strand, we generated time series data of 400-800 time points approximately at 2 to 4 hourly resolution on 17 elemental intensities in ALS-positive cases and ALS-negative controls from a national collection and a regional centre in the US (on a total sample of 391, with 295 cases and 96 controls, with median age at hair collection over 60 years).

Zinc and Cobalt exposure influence growth and short-chain fatty acid metabolism.

is a probiotic bacterium that has been proposed as a potential intervention for depression. is a common mucin degrader, producing short fatty chain acids (SCFAs), including acetate, butyrate, and propionate, which can help regulate mood via the gut-brain axis. However, the interplay between and other neuroactive environmental exposures is unclear.

Exposure to per- and poly-fluoroalkyl substances in association to later occurrence of type 2 diabetes and metabolic pathway dysregulation in a multiethnic US population.

Background: Growing evidence suggests that exposure to per- and polyfluoroalkyl substances (PFAS) are linked to an increased risk of type 2 diabetes (T2D); however, the effect of PFAS mixtures and underlying mechanisms are not well understood. We examined the associations between exposure to PFAS mixture with later T2D diagnosis and underlying metabolic dysregulations.

Methods: We conducted a nested case-control study within BioMe, an electronic health record-linked biobank of >65,000 patients seeking primary care at Mount Sinai Hospital, New York, since 2007.

Primary tumor microbiomes predict distant metastasis of colorectal cancer.

Metastasis causes most cancer-related deaths in colorectal carcinoma (CRC), and microbiome markers may have prognostic value. We hypothesized that primary tumor microbiomes predict distant metastases. We analyzed 5-year metastasis-free survival (MFS) in a retrospective cohort of 900 ORIEN CRC tumor microbiomes (RNAseq).

Food insecurity modifies the association between the gut microbiome and the risk of cognitive impairment in adults.

This study investigated the role of food insecurity as an effect modifier between the gut microbiome, including groups of microbes (cliques), and risk of cognitive impairment (RCI). The analytical sample (n = 360) included adult participants of the Survey of the Health of Wisconsin with complete data on food insecurity, RCI, and 16S rRNA sequencing from stool samples. Microbial cliques associated with RCI were identified using an interpretable machine-learning-based algorithm.

High-dimensional mediation analysis to elucidate the role of metabolites in the association between PFAS exposure and reduced SARS-CoV-2 IgG in pregnancy.

We previously found that per- and polyfluoroalkyl substances (PFAS) mixture exposure is inversely associated with SARS-CoV-2 IgG (IgG) antibody levels in pregnant individuals. Here, we aim to identify metabolites mediating this relationship to elucidate the underlying biological pathways. This cross-sectional study included 59 pregnant participants from a US-based pregnancy cohort.

Childhood Pb-induced cognitive dysfunction: structural equation modeling of hot and cold executive functions.

Background: Childhood lead [Pb] exposure has been consistently linked to neurotoxic effects related to the prefrontal cortex, a critical mediating structure involved in decision-making, planning, problem-solving, and specific aspects of short-term memory, i.e., the components of executive functions [EFs].

High-dimensional mediation analysis to elucidate the role of metabolites in the association between PFAS exposure and reduced SARS-CoV-2 IgG in pregnancy.

We previously found that per- and polyfluoroalkyl substances (PFAS) mixture exposure is inversely associated with SARS-CoV-2 IgG (IgG) antibody levels in pregnant individuals. Here, we aim to identify metabolites mediating this relationship to elucidate the underlying biological pathways. This cross-sectional study included 59 pregnant participants from a US-based pregnancy cohort.

Impact of metabolism-disrupting chemicals and folic acid supplementation on liver injury and steatosis in mother-child pairs.

Background & Aims: Scarce knowledge about the impact of metabolism-disrupting chemicals (MDCs) on steatotic liver disease limits opportunities for intervention. We evaluated pregnancy MDC-mixture associations with liver outcomes, and effect modification by folic acid (FA) supplementation in mother-child pairs.

Methods: We studied ∼200 mother-child pairs from the Mexican PROGRESS cohort, with 43 MDCs measured during pregnancy (estimated air pollutants, blood/urine metals or metalloids, urine high- and low-molecular-weight phthalate [HMWPs, LMWPs] and organophosphate-pesticide metabolites), and serum liver enzymes (ALT, AST) at ∼9 years post-parturition.

Food Insecurity Modifies the Association Between the Gut Microbiome and the Risk of Cognitive Impairment in Adults.

Background: Recent studies have shown associations between relative abundances of specific gut microbes and cognitive function; however, few studies have explored the potential interplay between the gut microbiome and food insecurity in association with the risk of cognitive impairment (RCI). This study investigated the role of food insecurity as an effect modifier between the gut microbiome, including groups of gut microbes (microbial cliques), and RCI.

Methods: Data came from the Survey of the Health of Wisconsin and its ancillary Wisconsin Microbiome Study.

attenuates association between specific metal exposures during pregnancy and depressive symptoms in late childhood.

Emerging research suggests that exposures to metals during pregnancy and consequent disruptions in gut microbiome (GM) are associated with depressive disorders in childhood. , a GM bacteria, has been studied for its potential antidepressant effects. However, its role in influencing the association between prenatal metal exposures and depressive symptoms during childhood is unknown.

Long-Term Oral Health Effects of Traumatic Events Among World Trade Center Health Registry Enrolees, 2003-2020.

Objectives: Posttraumatic stress disorder (PTSD) is a disabling mental health condition arising from experiencing serious traumatic events. This study investigated if PTSD secondary to the World Trade Center terrorist attack on 11 September 2001 (9/11) is associated with self-reported doctor's diagnosis of periodontitis and count of missing teeth.

Methods: Data from the World Trade Center Health Registry, 2003-2020 (n = 20 826) were used to prospectively examine the rate of periodontitis and cross-sectionally the odds of missing teeth among enrolees with/without PTSD post-9/11 using a modified Poisson regression and generalised logit model, respectively, adjusted for covariates.

Exploring the link between the pediatric exposome, respiratory health, and executive function in children: a narrative review.

Asthma is a highly prevalent inflammatory condition, significantly affecting nearly six million U.S. children and impacting various facets of their developmental trajectories including neurodevelopment.

Association between Exposure to Metals during Pregnancy, Childhood Gut Microbiome, and Risk of Intestinal Inflammation in Late Childhood.

Alterations to the gut microbiome and exposure to metals during pregnancy have been suggested to impact inflammatory bowel disease. Nonetheless, how prenatal exposure to metals eventually results in long-term effects on the gut microbiome, leading to subclinical intestinal inflammation, particularly during late childhood, has not been studied. It is also unknown whether such an interactive effect drives a specific subgroup of children toward elevated susceptibility to intestinal inflammation.

Prenatal and early life exposure to fine particulate matter and telomere length in early childhood.

Background: Telomere length is a biomarker of molecular aging that may be impacted by air pollution exposure starting in utero. We aimed to examine the association between prenatal and early life exposure to fine particulate matter (PM) and leukocyte telomere length (LTL) in children and explore sex differences.

Methods: Analyses included 384 mother-child pairs enrolled in the Programming Research in Obesity, Growth, and Environmental Stressors (PROGRESS) birth cohort in Mexico City.

Emerging role of environmental pollutants in inflammatory bowel disease risk, outcomes and underlying mechanisms.

Epidemiological and translational data increasingly implicate environmental pollutants in inflammatory bowel disease (IBD). Indeed, the global incidence of IBD has been rising, particularly in developing countries, in parallel with the increased use of chemicals and synthetic materials in daily life and escalating pollution levels. Recent nationwide and ecological studies have reported associations between agricultural pesticides and IBD, particularly Crohn's disease.

Tweeting environmental pollution: Analyzing twitter language to uncover its correlation with county-level obesity rates in the United States.

Background: Environmental pollution has been linked to obesogenic tendencies. Using environmental-related posts from Twitter (now known as X) from U.S.

Metabolism-Disrupting Chemical Mixtures during Pregnancy, Folic Acid Supplementation, and Liver Injury in Mother-Child Pairs.

Background And Aims: Scarce knowledge about the impact of metabolism-disrupting chemicals (MDCs) on liver injury limits opportunities for intervention. We evaluated pregnancy MDC-mixture associations with liver injury and effect modification by folic acid (FA) supplementation in mother-child pairs.

Methods: We studied ∼200 mother-child pairs from the Mexican PROGRESS cohort, with measured 43 MDCs during pregnancy (estimated air pollutants, blood/urine metals or metalloids, urine high- and low-molecular-weight phthalate [HMWPs, LMWPs] and organophosphate-pesticide [OP] metabolites), and serum liver enzymes (ALT, AST) at ∼9 years post-parturition.

Akkermansia muciniphila modifies the association between metal exposure during pregnancy and depressive symptoms in late childhood.

Emerging research suggests that exposures to metals during pregnancy and gut microbiome (GM) disruptions are associated with depressive disorders in childhood. , a GM bacteria, has been studied for its potential antidepressant effects. However, its role in the influence of prenatal metal exposures on depressive symptoms during childhood is unknown.

Prenatal exposure to metal mixtures and childhood temporal processing in the PROGRESS Birth Cohort Study: Modification by childhood obesity.

Children are frequently exposed to various biological trace metals, some essential for their development, while others can be potent neurotoxicants. Furthermore, the inflammatory and metabolic conditions associated with obesity may interact with and amplify the impact of metal exposure on neurodevelopment. However, few studies have assessed the potential modification effect of body mass index (BMI).

Prenatal metal exposures and childhood gut microbial signatures are associated with depression score in late childhood.

Background: Childhood depression is a major public health issue worldwide. Previous studies have linked both prenatal metal exposures and the gut microbiome to depression in children. However, few, if any, have studied their interacting effect in specific subgroups of children.