Book contents
- Frontmatter
- Introduction
- Part I Medicine and Disease: An Overview
- Part II Changing Concepts of Health and Disease
- Part III Medical Specialties and Disease Prevention
- Part IV Measuring Health
- Part V The History of Human Disease in the World Outside Asia
- Part VI The History of Human Disease in Asia
- Part VII The Geography of Human Disease
- Part VIII Major Human Diseases Past and Present
- VIII.1 Acquired Immune Deficiency Syndrome (AIDS)
- VIII.2 African Trypanosomiasis (Sleeping Sickness)
- VIII.3 Ainhum
- VIII.4 Alzheimer’s Disease
- VIII.5 Amebic Dysentery
- VIII.6 Anemia
- VIII.7 Anorexia Nervosa
- VIII.8 Anthrax
- VIII.9 Apoplexy and Stroke
- VIII.10 Arboviruses
- VIII.11 Arenaviruses
- VIII.12 Arthritis (Rheumatoid)
- VIII.13 Ascariasis
- VIII.14 Bacillary Dysentery
- VIII.15 Beriberi
- VIII.16 Black Death
- VIII.17 Black and Brown Lung Disease
- VIII.18 Bleeding Disorders
- VIII.19 Botulism
- VIII.20 Brucellosis
- VIII.21 Bubonic Plague
- VIII.22 Carrión’s Disease
- VIII.23 Catarrh
- VIII.24 Cestode Infections
- VIII.25 Chagas’ Disease
- VIII.26 Chlorosis
- VIII.27 Cholera
- VIII.28 Cirrhosis
- VIII.29 Clonorchiasis
- VIII.30 Croup
- VIII.31 Cystic Fibrosis
- VIII.32 Cytomegalovirus Infection
- VIII.33 Dengue
- VIII.34 Diabetes
- VIII.35 Diarrheal Diseases (Acute)
- VIII.36 Diphtheria
- VIII.37 Down Syndrome
- VIII.38 Dracunculiasis
- VIII.39 Dropsy
- VIII.40 Dysentery
- VIII.41 Dyspepsia
- VIII.42 Ebola Virus Disease
- VIII.43 Echinococcosis (Hydatidosis)
- VIII.44 Eclampsia
- VIII.45 Emphysema
- VIII.46 Encephalitis Lethargica
- VIII.47 Enterobiasis
- VIII.48 Epilepsy
- VIII.49 Ergotism
- VIII.50 Erysipelas
- VIII.51 Fascioliasis
- VIII.52 Fasciolopsiasis
- VIII.53 Favism
- VIII.54 Filariasis
- VIII.55 Fungus Infections (Mycoses)
- VIII.56 Fungus Poisoning
- VIII.57 Gallstones (Cholelithiasis)
- VIII.58 Gangrene
- VIII.59 Giardiasis
- VIII.60 Glomerulonephritis (Bright’s Disease)
- VIII.61 Goiter
- VIII.62 Gonorrhea
- VIII.63 Gout
- VIII.64 Herpes Simplex
- VIII.65 Herpesviruses
- VIII.66 Histoplasmosis
- VIII.67 Hookworm Disease
- VIII.68 Huntington’s Disease (Chorea)
- VIII.69 Hypertension
- VIII.70 Infectious Hepatitis
- VIII.71 Infectious Mononucleosis
- VIII.72 Inflammatory Bowel Disease
- VIII.73 Influenza
- VIII.74 Japanese B Encephalitis
- VIII.75 Lactose Intolerance and Malabsorption
- VIII.76 Lassa Fever
- VIII.77 Lead Poisoning
- VIII.78 Legionnaires’ Disease
- VIII.79 Leishmaniasis
- VIII.80 Leprosy
- VIII.81 Leptospirosis
- VIII.82 Leukemia
- VIII.83 Lupus Erythematosus
- VIII.84 Lyme Borreliosis (Lyme Disease)
- VIII.85 Malaria
- VIII.86 Marburg Virus Disease
- VIII.87 Mastoiditis
- VIII.88 Measles
- VIII.89 Meningitis
- VIII.90 Milk Sickness (Tremetol Poisoning)
- VIII.91 Multiple Sclerosis
- VIII.92 Mumps
- VIII.93 Muscular Dystrophy
- VIII.94 Myasthenia Gravis
- VIII.95 Nematode Infections
- VIII.96 Onchocerciasis
- VIII.97 Ophthalmia (Conjunctivitis and Trachoma)
- VIII.98 Osteoarthritis
- VIII.99 Osteoporosis
- VIII.100 Paget’s Disease of Bone
- VIII.101 Paragonimiasis
- VIII.102 Parkinson’s Disease
- VIII.103 Pellagra
- VIII.104 Periodontal Disease (Pyorrhea)
- VIII.105 Pica
- VIII.106 Pinta
- VIII.107 Plague of Athens
- VIII.108 Pneumocystis Pneumonia (Interstitial Plasma Cell Pneumonia, Pneumocystosis)
- VIII.109 Pneumonia
- VIII.110 Poliomyelitis
- VIII.111 Protein-Energy Malnutrition
- VIII.112 Protozoan Infections
- VIII.113 Puerperal Fever
- VIII.114 Q Fever
- VIII.115 Rabies
- VIII.116 Relapsing Fever
- VIII.117 Rheumatic Fever and Rheumatic Heart Disease
- VIII.118 Rickets and Osteomalacia
- VIII.119 Rickettsial Diseases
- VIII.120 Rocky Mountain Spotted Fever and the Spotted Fever Group Diseases
- VIII.121 Rubella
- VIII.122 St. Anthony’s Fire
- VIII.123 Scarlet Fever
- VIII.124 Schistosomiasis
- VIII.125 Scrofula (Scrophula)
- VIII.126 Scurvy
- VIII.127 Sickle-Cell Anemia
- VIII.128 Smallpox
- VIII.129 Streptococcal Diseases
- VIII.130 Strongyloidiasis
- VIII.131 Sudden Infant Death Syndrome
- VIII.132 Sudden Unexplained Death Syndrome (Asian)
- VIII.133 Sweating Sickness
- VIII.134 Syphilis
- VIII.135 Syphilis, Nonvenereal
- VIII.136 Tapeworm
- VIII.137 Tay-Sachs Disease
- VIII.138 Tetanus
- VIII.139 Tetanus, Neonatal
- VIII.140 Tetany
- VIII.141 Toxoplasmosis
- VIII.142 Trematode Infections
- VIII.143 Trench Fever
- VIII.144 The Treponematoses
- VIII.145 Trichinosis
- VIII.146 Trichuriasis
- VIII.147 Tuberculosis
- VIII.148 Tularemia
- VIII.149 Typhoid Fever
- VIII.150 Typhomalarial Fever
- VIII.151 Typhus, Epidemic
- VIII.152 Typhus, Murine
- VIII.153 Typhus, Scrub (Tsutsugamushi)
- VIII.154 Urolithiasis (Renal and Urinary Bladder Stone Disease)
- VIII.155 Varicella Zoster
- VIII.156 Whooping Cough
- VIII.157 Yaws
- VIII.158 Yellow Fever
- Indexes
- References
VIII.5 - Amebic Dysentery
from Part VIII - Major Human Diseases Past and Present
Published online by Cambridge University Press: 28 March 2008
Edited by
Book contents
- Frontmatter
- Introduction
- Part I Medicine and Disease: An Overview
- Part II Changing Concepts of Health and Disease
- Part III Medical Specialties and Disease Prevention
- Part IV Measuring Health
- Part V The History of Human Disease in the World Outside Asia
- Part VI The History of Human Disease in Asia
- Part VII The Geography of Human Disease
- Part VIII Major Human Diseases Past and Present
- VIII.1 Acquired Immune Deficiency Syndrome (AIDS)
- VIII.2 African Trypanosomiasis (Sleeping Sickness)
- VIII.3 Ainhum
- VIII.4 Alzheimer’s Disease
- VIII.5 Amebic Dysentery
- VIII.6 Anemia
- VIII.7 Anorexia Nervosa
- VIII.8 Anthrax
- VIII.9 Apoplexy and Stroke
- VIII.10 Arboviruses
- VIII.11 Arenaviruses
- VIII.12 Arthritis (Rheumatoid)
- VIII.13 Ascariasis
- VIII.14 Bacillary Dysentery
- VIII.15 Beriberi
- VIII.16 Black Death
- VIII.17 Black and Brown Lung Disease
- VIII.18 Bleeding Disorders
- VIII.19 Botulism
- VIII.20 Brucellosis
- VIII.21 Bubonic Plague
- VIII.22 Carrión’s Disease
- VIII.23 Catarrh
- VIII.24 Cestode Infections
- VIII.25 Chagas’ Disease
- VIII.26 Chlorosis
- VIII.27 Cholera
- VIII.28 Cirrhosis
- VIII.29 Clonorchiasis
- VIII.30 Croup
- VIII.31 Cystic Fibrosis
- VIII.32 Cytomegalovirus Infection
- VIII.33 Dengue
- VIII.34 Diabetes
- VIII.35 Diarrheal Diseases (Acute)
- VIII.36 Diphtheria
- VIII.37 Down Syndrome
- VIII.38 Dracunculiasis
- VIII.39 Dropsy
- VIII.40 Dysentery
- VIII.41 Dyspepsia
- VIII.42 Ebola Virus Disease
- VIII.43 Echinococcosis (Hydatidosis)
- VIII.44 Eclampsia
- VIII.45 Emphysema
- VIII.46 Encephalitis Lethargica
- VIII.47 Enterobiasis
- VIII.48 Epilepsy
- VIII.49 Ergotism
- VIII.50 Erysipelas
- VIII.51 Fascioliasis
- VIII.52 Fasciolopsiasis
- VIII.53 Favism
- VIII.54 Filariasis
- VIII.55 Fungus Infections (Mycoses)
- VIII.56 Fungus Poisoning
- VIII.57 Gallstones (Cholelithiasis)
- VIII.58 Gangrene
- VIII.59 Giardiasis
- VIII.60 Glomerulonephritis (Bright’s Disease)
- VIII.61 Goiter
- VIII.62 Gonorrhea
- VIII.63 Gout
- VIII.64 Herpes Simplex
- VIII.65 Herpesviruses
- VIII.66 Histoplasmosis
- VIII.67 Hookworm Disease
- VIII.68 Huntington’s Disease (Chorea)
- VIII.69 Hypertension
- VIII.70 Infectious Hepatitis
- VIII.71 Infectious Mononucleosis
- VIII.72 Inflammatory Bowel Disease
- VIII.73 Influenza
- VIII.74 Japanese B Encephalitis
- VIII.75 Lactose Intolerance and Malabsorption
- VIII.76 Lassa Fever
- VIII.77 Lead Poisoning
- VIII.78 Legionnaires’ Disease
- VIII.79 Leishmaniasis
- VIII.80 Leprosy
- VIII.81 Leptospirosis
- VIII.82 Leukemia
- VIII.83 Lupus Erythematosus
- VIII.84 Lyme Borreliosis (Lyme Disease)
- VIII.85 Malaria
- VIII.86 Marburg Virus Disease
- VIII.87 Mastoiditis
- VIII.88 Measles
- VIII.89 Meningitis
- VIII.90 Milk Sickness (Tremetol Poisoning)
- VIII.91 Multiple Sclerosis
- VIII.92 Mumps
- VIII.93 Muscular Dystrophy
- VIII.94 Myasthenia Gravis
- VIII.95 Nematode Infections
- VIII.96 Onchocerciasis
- VIII.97 Ophthalmia (Conjunctivitis and Trachoma)
- VIII.98 Osteoarthritis
- VIII.99 Osteoporosis
- VIII.100 Paget’s Disease of Bone
- VIII.101 Paragonimiasis
- VIII.102 Parkinson’s Disease
- VIII.103 Pellagra
- VIII.104 Periodontal Disease (Pyorrhea)
- VIII.105 Pica
- VIII.106 Pinta
- VIII.107 Plague of Athens
- VIII.108 Pneumocystis Pneumonia (Interstitial Plasma Cell Pneumonia, Pneumocystosis)
- VIII.109 Pneumonia
- VIII.110 Poliomyelitis
- VIII.111 Protein-Energy Malnutrition
- VIII.112 Protozoan Infections
- VIII.113 Puerperal Fever
- VIII.114 Q Fever
- VIII.115 Rabies
- VIII.116 Relapsing Fever
- VIII.117 Rheumatic Fever and Rheumatic Heart Disease
- VIII.118 Rickets and Osteomalacia
- VIII.119 Rickettsial Diseases
- VIII.120 Rocky Mountain Spotted Fever and the Spotted Fever Group Diseases
- VIII.121 Rubella
- VIII.122 St. Anthony’s Fire
- VIII.123 Scarlet Fever
- VIII.124 Schistosomiasis
- VIII.125 Scrofula (Scrophula)
- VIII.126 Scurvy
- VIII.127 Sickle-Cell Anemia
- VIII.128 Smallpox
- VIII.129 Streptococcal Diseases
- VIII.130 Strongyloidiasis
- VIII.131 Sudden Infant Death Syndrome
- VIII.132 Sudden Unexplained Death Syndrome (Asian)
- VIII.133 Sweating Sickness
- VIII.134 Syphilis
- VIII.135 Syphilis, Nonvenereal
- VIII.136 Tapeworm
- VIII.137 Tay-Sachs Disease
- VIII.138 Tetanus
- VIII.139 Tetanus, Neonatal
- VIII.140 Tetany
- VIII.141 Toxoplasmosis
- VIII.142 Trematode Infections
- VIII.143 Trench Fever
- VIII.144 The Treponematoses
- VIII.145 Trichinosis
- VIII.146 Trichuriasis
- VIII.147 Tuberculosis
- VIII.148 Tularemia
- VIII.149 Typhoid Fever
- VIII.150 Typhomalarial Fever
- VIII.151 Typhus, Epidemic
- VIII.152 Typhus, Murine
- VIII.153 Typhus, Scrub (Tsutsugamushi)
- VIII.154 Urolithiasis (Renal and Urinary Bladder Stone Disease)
- VIII.155 Varicella Zoster
- VIII.156 Whooping Cough
- VIII.157 Yaws
- VIII.158 Yellow Fever
- Indexes
- References
Summary
Amebiasis is an infection of the colon caused by a parasitic protozoan, the ameba Entamoeba histolytica. Several species of ameba inhabit the large intestine. Most are harmless commensals or minor parasites, usually causing little or no clinical damage. The closely related species Entamoeba coli and Entamoeba hartmanni are commensals, and infection with E. histolytica is also often asymptomatic. E. histolytica is probably a species complex, with a number of morphologically similar forms with varying degrees of invasiveness. E. hartmanni, formerly believed to be a “small race” of E. histolytica, is now recognized as a separate nonpathogenic species. Pathogenic amebas cause light to severe intestinal damage (amebic dysentery) and sometimes spread to the liver, lungs, brain, and other organs.
Etiology
The parasite exists in two forms during its life cycle. Active adults, trophozoites, multiply in the lumen of the colon. They frequently live there harmlessly, feeding on the contents of the intestine. Some strains are generally commensal; others are highly pathogenic. Under conditions of stress, lowered host resistance, or when a particularly pathogenic strain is involved, amebas invade the intestinal wall and cause abscesses. As they pass lower into the large intestine, the drier environment stimulates them to form a cyst wall. The original cell nucleus divides twice, producing four daughter nuclei. nuclei. Cysts are passed with the feces and are infective when swallowed. Excystation takes place in the small intestine, and the young trophozoites, four from each cyst, are carried in the fecal stream to the large intestine. When dysentery occurs, trophozoites are swept out too rapidly to encyst. Even though huge numbers of amebas may be passed, they die quickly and are not infective.
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- Information
- The Cambridge World History of Human Disease , pp. 568 - 571Publisher: Cambridge University PressPrint publication year: 1993
References
, , and , eds. 1978. Tropical medicine and parasitology: Classic investigations, Vol. I. Ithaca and London.Google Scholar
. 1986. Major parasitic infections: A global review. World Health Statistical Quarterly 39.
. Centers for Disease Control. 1986. Summary of notifiable diseases, United States, 1986. Athens.
1986. Problems in recognition and diagnosis of amebiasis: Estimation of the global magnitude of morbidity and mortality. Reviews of Infectious Diseases 8.CrossRefGoogle ScholarPubMed
. 1980. Parasite-related diarrheas. Bulletin of the World Health Organization 58.
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