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Type II Diabetes I: Introduction01:26

Type II Diabetes I: Introduction

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Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder characterized by insulin resistance, in which target tissues such as the liver, muscle, and adipose tissue respond poorly to insulin. It is also associated with inadequate compensatory insulin secretion, where pancreatic β-cells fail to produce sufficient insulin. Together, these abnormalities lead to persistent hyperglycemia.EtiologyT2DM develops through a complex interaction of genetic predisposition and environmental or...
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Type II Diabetes II: Pathophysiology01:24

Type II Diabetes II: Pathophysiology

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PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.
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Carbohydrates are polymers composed of molecules containing atoms of carbon, hydrogen and oxygen. One gram of carbohydrate can provide four kilo-calories of energy, which makes it the most efficient instant energy source.
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Microbiota of the Large Intestine01:27

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The large intestine hosts the most densely populated microbial ecosystem in the human body. This complex community primarily consists of anaerobic bacteria, with Bacillota (formerly Firmicutes) and Bacteroidota (formerly Bacteroidetes) as the predominant groups. The distribution of these microbes varies along different sections of the large intestine, influenced by local environmental factors such as oxygen availability and nutrient composition.The cecum, located at the beginning of the large...
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Development of Human Microbiota01:30

Development of Human Microbiota

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The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from...
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The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...
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An Advanced Murine Model for Nonalcoholic Steatohepatitis in Association with Type 2 Diabetes
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[Intestinal microflora, obesity and type 2 diabetes].

V M Bondarenko, V V Maleev, V G Likhoded

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    Summary
    This summary is machine-generated.

    Intestinal microflora, diet, and genetics influence obesity and type 2 diabetes. Bacterial toxins translocated from the gut can trigger inflammation, adiposity, and insulin resistance.

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    Area of Science:

    • Microbiology and Immunology
    • Metabolic Disorders
    • Gastroenterology

    Context:

    • Obesity and type 2 diabetes are complex metabolic disorders influenced by multiple factors.
    • The gut microbiome's role in metabolic health is an area of intense research.
    • Chronic low-grade inflammation is increasingly recognized as a contributing factor to these conditions.

    Purpose:

    • To review the literature on the interplay between intestinal microflora, host genetics, diet, and environmental factors in obesity and type 2 diabetes.
    • To explore the mechanisms by which gut dysbiosis and bacterial products contribute to metabolic dysfunction.
    • To discuss the role of immune system dysregulation in these diseases.

    Summary:

    • Literature suggests that diet and intestinal microflora are critical for the development of obesity and type 2 diabetes in experimental models.
    • Increased intestinal permeability facilitates the translocation of gut bacteria and endotoxins (LPS), leading to systemic inflammation, adiposity, and insulin resistance.
    • The absence of receptor CD14 prevents LPS-induced inflammatory responses, highlighting its crucial role in endotoxin signaling.

    Impact:

    • Understanding these mechanisms can inform novel therapeutic strategies targeting the gut microbiome and immune pathways for metabolic diseases.
    • Highlights the importance of host-microbe interactions in maintaining metabolic homeostasis.
    • Provides insights into the pathogenesis of obesity and type 2 diabetes, linking gut health to systemic metabolic regulation.