ASD Biomarkers and Comorbidities Quiz
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Questions and Answers

Which cytokine was found to be elevated in the brain and whole blood of ASD patients compared to controls?

  • IL-6
  • IL-4
  • TNF-α
  • IFN-γ (correct)

Which cytokine is mainly produced by M1 macrophages and is important for NF-kB activation, a transcription factor and an essential regulator of inflammatory genes?

  • IL-6
  • TNF-α (correct)
  • IFN-γ
  • IL-4

Which pro-inflammatory cytokine was found to have a significant production in monocytes of ASD patients compared to controls when their PBMCs were stimulated with lipopolysaccharide (LPS) in vitro?

  • IL-6 (correct)
  • IL-4
  • IFN-γ
  • TNF-α

Which cytokine was found to induce T-helper 17 (Th17) response?

<p>IL-6 (A)</p> Signup and view all the answers

Which cytokine was found to have an elevated level in the serum of mothers of individuals who were later diagnosed with autism during mid-gestation?

<p>IFN-γ (D)</p> Signup and view all the answers

Which cytokine is known to activate CD4+ T-helper 1 (Th1) response?

<p>IFN-γ (B)</p> Signup and view all the answers

Which cytokine showed an increased NF-kB binding activity to DNA in the PBMCs of ASD patients?

<p>TNF-α (B)</p> Signup and view all the answers

Which body fluid is the most common site for biomarker discovery in ASD patients?

<p>Blood (D)</p> Signup and view all the answers

What is one of the comorbidities that may accompany ASD?

<p>Attention deficit hyperactivity disorder (ADHD) (D)</p> Signup and view all the answers

At what age is ASD typically diagnosed?

<p>6 years old (A)</p> Signup and view all the answers

Why are early behavioral interventions important in ASD?

<p>To improve cognitive performance and language skills (C)</p> Signup and view all the answers

What is the main purpose of identifying biomarkers of ASD?

<p>To understand biological characteristics of the disorder and aid in early screening (D)</p> Signup and view all the answers

Which term describes the potential division of services related to assessing and managing neurodevelopmental problems?

<p>Fragmentation of services (D)</p> Signup and view all the answers

What is a key reason for the lack of effective drugs to alleviate core ASD symptoms?

<p>Complexity and heterogeneity of ASD (C)</p> Signup and view all the answers

What is a significant benefit of early screening for ASD?

<p>Supporting cognitive and language skills development (D)</p> Signup and view all the answers

What is the general outcome of Precision Medicine approaches to ASD?

<p>Identification of potential biomarkers for early screening (D)</p> Signup and view all the answers

Which of the following factors can directly affect the epigenetic machinery?

<p>Environmental factors (C)</p> Signup and view all the answers

What role does the placenta play in fetal programming, according to the text?

<p>It drives the metabolic and epigenetic regulation of fetal programming. (A)</p> Signup and view all the answers

According to the passage, how is the epigenome programmed?

<p>It is programmed in an adaptive and predictive sense by the intrauterine and cellular microenvironment. (B)</p> Signup and view all the answers

What is the crucial time window for brain wiring, according to the text?

<p>The first two years of life (A)</p> Signup and view all the answers

According to the passage, what may influence the impact of rare mutations on the phenotypic outcome?

<p>Genomic background (the sum of common variants) (B)</p> Signup and view all the answers

How may the genomic background act, according to the text?

<p>It may act as a buffer that diminishes or increases the deleterious effect of rare variants (CNVs). (D)</p> Signup and view all the answers

According to the passage, what may be sufficient to cause ASD in an individual with a high load of common ASD risk variants?

<p>A small burden of rare risk genes (D)</p> Signup and view all the answers

Which of the following mechanisms may continue to undermine human health lifelong?

<p>Environmental factors and the 'bad trio' (MD/ROS/MIA/dysbiosis) (D)</p> Signup and view all the answers

What is the approximate percentage of observed variance in ASD that environmental influences account for?

<p>5-6% (B)</p> Signup and view all the answers

In human studies comparing monozygotic and dizygotic twins, what has been consistently revealed regarding environmental influences in ASD?

<p>They account for 5-6% of variance (A)</p> Signup and view all the answers

How do critical periods impact neuronal development according to the text?

<p>They influence brain development stages (C)</p> Signup and view all the answers

Which of the following is a factor that could influence the timing of neuronal development according to the text?

<p>Genetic factors related to gene expression timing (D)</p> Signup and view all the answers

What is suggested about individuals with a genetic background involving few common risk variants in relation to ASD?

<p>They require a lower burden of deleterious mutations (A)</p> Signup and view all the answers

In brain development, what helps refine gene expression and intrinsic neuronal activity according to the text?

<p>Interactions with the environment (C)</p> Signup and view all the answers

When do genes involved in cell proliferation tend to be expressed compared to genes involved in synaptogenesis or myelination?

<p>Before genes involved in synaptogenesis or myelination (C)</p> Signup and view all the answers

What is suggested about the impact of environmental influences on ASD development compared to genetic factors based on the text?

<p>Environmental factors have a higher impact (D)</p> Signup and view all the answers

Which of the following statements about mitochondrial dysfunction and autism spectrum disorder (ASD) is correct?

<p>Mitochondrial abnormalities, such as increased hydrogen peroxide, reduced NADH, and mitochondrial DNA overreplication, have been observed in lymphocytes isolated from individuals with ASD. (A)</p> Signup and view all the answers

Which of the following biomarkers has been identified as part of a signature metabolomic pattern highly sensitive and specific in predicting ASD patients using plasma samples?

<p>Creatinine (C)</p> Signup and view all the answers

Which of the following statements about the relationship between neurodevelopmental regression (NDR) and mitochondrial dysfunction in ASD is correct?

<p>Mitochondrial dysfunction is more common in individuals with ASD and NDR compared to those with ASD without NDR. (A)</p> Signup and view all the answers

Based on the information provided, which of the following statements about the prevalence of mitochondrial diseases in ASD is correct?

<p>The prevalence of mitochondrial diseases in ASD is 4-5%, which is markedly higher than in the general population (around 0.01%). (D)</p> Signup and view all the answers

According to the information provided, which of the following statements about altered immune response in ASD is correct?

<p>Altered immune response is evident in ASD, but the nature of the alteration is unknown. (B)</p> Signup and view all the answers

Which of the following molecules is mentioned in the text as part of the signature metabolomic pattern used to predict ASD patients?

<p>3-aminoisobutyric acid (D)</p> Signup and view all the answers

Based on the information provided, which of the following statements about mitochondrial biomarkers in ASD is correct?

<p>Lactate, AST, pyruvate, and creatine kinase levels are typically elevated in children with ASD, while carnitine levels are decreased. (D)</p> Signup and view all the answers

According to the information provided, which of the following statements about the relationship between mitochondrial dysfunction and ASD is correct?

<p>Mitochondrial dysfunction is a potential contributing factor to ASD, but its role is not fully understood. (B)</p> Signup and view all the answers

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