Epistemis

Microbiota — General Pathology · Expert Level

General Pathology · Basic Sciences

How it begins

Host microbial ecology, mechanisms of homeostasis, pathophysiology of dysbiosis and clinical correlations in the context of modern pathology.

What it covers

  1. The Human Microbiota
  2. 1. Introduction and Fundamental Definitions
  3. · 1.1 Fundamental Quantitative Data
  4. · 1.2 Study Methodology
  5. 2. Microbial Composition and Diversity
  6. · 2.1 Predominant Bacterial Phyla
  7. · 2.2 Firmicutes/Bacteroidetes Ratio (F/B)
  8. · 2.3 Non-Bacterial Components of the Microbiome
  9. · 2.4 Microbial Diversity — Ecological Metrics
  10. 3. Factors that Modulate the Microbiota
  11. · 3.1 Early Establishment (Critical Window)
  12. · 3.2 Breastfeeding vs. Formula
  13. · 3.3 Diet
  14. · 3.4 Antibiotics
  15. · 3.5 Other Modulatory Factors
  16. 4. Physiological Functions of the Microbiota
  17. · 4.1 Metabolic Functions
  18. · 4.2 Resistance to Colonization
  19. · 4.3 Development and Maturation of the Immune System
  20. 5. Intestinal Microbiota by Segments
  21. · 5.1 The Mucus Layer — Microbial Interface
  22. · 5.2 Small Intestine Bacterial Overgrowth (SIBO)
  23. 6. Oral Microbiota
  24. · 6.1 Composition
  25. · 6.2 Systemic Connection of the Oral Microbiota
  26. 7. Lung Microbiota
  27. · 7.1 Composition
  28. · 7.2 Pulmonary Dysbiosis in Chronic Respiratory Diseases
  29. · 7.3 Intestine-Lung Axis
  30. 8. Skin Microbiota
  31. · 8.1 Cutaneous Niches and Predominant Taxa
  32. · 8.2 Atopic Dermatitis and Skin Microbiota
  33. · 8.3 Other Dermatoses Associated with Dysbiosis
  34. 9. Vaginal Microbiota
  35. · 9.1 Four Types of Communities (CSTs)
  36. · 9.2 Bacterial Vaginosis (BV)
  37. · 9.3 Hormonal Modulation
  38. 10. Microbiota in Other Compartments
  39. · 10.1 Urinary Microbiota
  40. · 10.2 Brain Microbiota
  41. · 10.3 Placental and Neonatal Microbiota
  42. 11. Dysbiosis: Concept, Types and Mechanisms
  43. · 11.1 Three Functional Types of Dysbiosis (Petersen & Round)
  44. · 11.2 Keystone Species
  45. · 11.3 Homeostasis vs. Dysbiosis — Protective Factors
  46. 12. Intestinal Barrier and Increased Permeability
  47. · 12.1 Components of the Intestinal Barrier
  48. · 12.2 Mechanisms of Increased Intestinal Permeability
  49. · 12.3 Measurement of Intestinal Permeability
  50. 13. Microbiota–Gut–Brain Axis
  51. · 13.1 Communication Routes
  52. · 13.2 Microbiota and Neuropsychiatric Pathology
  53. 14. Microbiota and Immunology
  54. · 14.1 Innate Immunity — Microbial Recognition
  55. · 14.2 Treg–Th17 Axis and the Microbiota
  56. · 14.3 Hygiene Hypothesis and "Old Friends"
  57. · 14.4 Microbiota and Oncological Immunotherapy
  58. 15. Dysbiosis and Systemic Diseases
  59. · 15.1 Inflammatory Bowel Disease (IBD)
  60. · 15.2 Irritable Bowel Syndrome (IBS)
  61. · 15.3 Obesity and Metabolic Syndrome
  62. · 15.4 Diabetes Mellitus Type 2
  63. · 15.5 Liver Disease and Intestine-Liver Axis
  64. · 15.6 Autoimmune Diseases
  65. 16. Clostridioides difficile — The Paradigmatic Pathobiont
  66. · 16.1 Epidemiology and Pathophysiology
  67. · 16.2 Diagnosis
  68. · 16.3 Step Treatment
  69. 17. Probiotics, Prebiotics and Symbiotics
  70. · 17.1 Mechanisms of Action of Probiotics
  71. · 17.2 Probiotic Strains with Established Clinical Evidence
  72. · 17.3 Prebiotics
  73. · 17.4 Synbiotics, Postbiotics and Parabiotics
  74. 18. Fecal Microbiota Transplantation (FMT)
  75. · 18.1 Effectiveness Mechanism
  76. · 18.2 Procedure and Routes of Administration
  77. · 18.3 Approved and Emerging Indications
  78. 19. Emerging Microbiota-Based Therapies
  79. · 19.1 Next Generation Therapeutic Bacteria (NGLBs)
  80. · 19.2 Bacteriophages as Precision Therapy
  81. · 19.3 Precision Postbiotics
  82. · 19.4 CRISPR and Microbiome Editing
  83. · 19.5 Diet as a Therapeutic Intervention

The complete study guide is in the app

This page summarizes the outline. The full interactive study guide —with high-yield diagrams, clinical tables, and board review cases— can be read inside Epistemis, completely offline and ad-free.

Subject
General Pathology
Category
Basic Sciences
Type
Study Guide
Sections
83
Reviewed
2026-08-02
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