Protozoa Unicellular organisms Worldwide distribution From 1 m

Protozoa 原蟲 Unicellular organisms Worldwide distribution From 1 μm to 500 μm in cell size 10, 000/65, 000 are parasitic protozoa Medically important protozoa are restricted to 17 genera Locomotion of protozoa Flagella 鞭毛 1 -8 flagella Cilia 纖毛 Pseudopodia偽足

Reproduction of protozoa Asexual reproduction ◎ Binary fission二分裂生殖 ◎ Multiple fission or schizogony裂殖體 ◎ Endodyogeny內出芽生殖 Sexual reproduction ◎ Conjugation 接合作用 ◎ Syngamy 配子結合

Headings of human infection protozoa 1. 2. 3. 4. 5. 6. Amoebae Infecting Man 阿米巴 Intestinal and Genital Flagellates 消化及生殖道鞭毛蟲 Haemoflagellates 血液鞭毛蟲 Balantidium coli大腸纖毛蟲 Malaria Parasites瘧原蟲and Babesia spp巴貝斯蟲 Toxoplasma弓漿蟲, Sarcocystis肉孢子蟲, Isospora球蟲 & Cryptosporidia隱孢子蟲 7. Microsporidia 微孢子蟲 8. Blastocystis hominis 人芽胞阿米巴

Classification of the medically important protozoa Kingdom： Protista 原生生物 Subkingdom：Protozoa 原生動物 Phylum Sarcomastigophora根鞭蟲門 Subphylum Mastigophora鞭毛蟲亞門 Class Order Suborder Genus Zoomatigophorea Kinetoplastida Trypanosomatina Leishmania 利什曼 Trypanosoma 錐蟲 Chilomastix脣形 Retortamonas Retortamonadida Diplomonadida Trichomonadida Enteromonadian Deplomonadina Enteromonas Giardia梨形 Dientamoeba雙核 Trichomonas滴蟲

Classification of the medically important protozoa Phylum Sarcomastigophora 根鞭蟲門 Subphylum Sarcodina 變形蟲亞門 Superclass Rhizopoda Class Order Suborder Genus Lobosea Amoebida Tubulina Acanthopodina Entamoeba 阿米巴 Acanthamoeba 棘阿米巴 Schizopyrenida Naegleria 內格里阿米巴

Classification of the medically important protozoa Phylum Class Apicomplexa 頂聚孢子蟲門 Sporozoea 孢子蟲綱 Subclass Order Suborder Genus Coccidia 球蟲 Eimeriina Isospora 球蟲 Sarcocystis 肉胞子蟲 Toxoplasma 弓蟲 Cryptosporidium 隱胞子蟲 Haemosporina Plasmodium 瘧原蟲 Piroplasmia Eucoccidiina Piroplasmida Babesia 巴貝斯蟲

Classification of the medically important protozoa Phylum Class Ciliophora 纖毛蟲門 Kinetofragminophorea Subclass Order Suborder Genus Vestibuliferia Trichostomatida Trichostomatina Balamtodium 纖毛蟲

Pathogenic intestinal Amoeba Entamoeba histolytica 赤痢阿米巴 Geographic distribution Worldwide distribution; 10% Tropical countries; 30% Increase in susceptibility during steroid and cytotoxic therapy Increase in tissue invasion during Large intestine cancer; trichuriasis; schistosomiasis