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![Page 1: VET05596 REINO PROTOZOA - files.lipp-hovet-ufes.webnode.comfiles.lipp-hovet-ufes.webnode.com/200000441-f24fef34a8/Reino... · Filo Sarcomastigophora Entamoeba Trichomonas Giardia](https://reader034.fdocuments.net/reader034/viewer/2022051407/5be19e6209d3f232098d8ee6/html5/thumbnails/1.jpg)
Parasitologia
VET05596
REINO
PROTOZOA
![Page 2: VET05596 REINO PROTOZOA - files.lipp-hovet-ufes.webnode.comfiles.lipp-hovet-ufes.webnode.com/200000441-f24fef34a8/Reino... · Filo Sarcomastigophora Entamoeba Trichomonas Giardia](https://reader034.fdocuments.net/reader034/viewer/2022051407/5be19e6209d3f232098d8ee6/html5/thumbnails/2.jpg)
Características
Morfologia
Locomoção
Reprodução
Reino Protozoa
![Page 3: VET05596 REINO PROTOZOA - files.lipp-hovet-ufes.webnode.comfiles.lipp-hovet-ufes.webnode.com/200000441-f24fef34a8/Reino... · Filo Sarcomastigophora Entamoeba Trichomonas Giardia](https://reader034.fdocuments.net/reader034/viewer/2022051407/5be19e6209d3f232098d8ee6/html5/thumbnails/3.jpg)
Locomoção - flagelo
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Reprodução
▪ I. Assexuada
▪ II. Sexuada
Reino Protozoa
* Alto índice de reprodução
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I. Assexuada
▪ Ex.: a) Divisão binária ou cissiparidade
b) Endodiogenia
c) Esquizogonia
Reino Protozoa
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II. Sexuada ou gametogonia
▪ Ocorre troca de material genético
▪ Há produção de gametas sexuais:
macrogameta
microgameta
▪ Zigoto – Ex.: oocisto.
Reino Protozoa
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Classificação
Reino Protozoa
Filo
Sarcomastigophora
Filo
Apicomplexa
Classes:Sarcodina
Mastigophora
Classes:Coccidia
Piroplasmasida
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Filo Sarcomastigophora
Reino Protozoa
Classe Sarcodina
▪ Possuem pseudópodes
Classe Mastigophora
▪ Possuem Flagelos
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Filo Sarcomastigophora
Entamoeba
Trichomonas
Giardia
Histomonas
Trypanosoma
Leishmania
Reino Protozoa
Classe Sarcodina
Classe Mastigophora
![Page 10: VET05596 REINO PROTOZOA - files.lipp-hovet-ufes.webnode.comfiles.lipp-hovet-ufes.webnode.com/200000441-f24fef34a8/Reino... · Filo Sarcomastigophora Entamoeba Trichomonas Giardia](https://reader034.fdocuments.net/reader034/viewer/2022051407/5be19e6209d3f232098d8ee6/html5/thumbnails/10.jpg)
1. EntamoebaAmebíase
Reino Protozoa
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1. Gênero Entamoeba
▪ Filo Sarcomastigophora
▪ Subfilo Sarcodina
- Família Entamoebidae
Espécies: Entamoeba coli,
E. histolytica
Filo Sarcomastigophora
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1. Entamoeba coli, E. histolytica
▪ Locomoção: pseudópodes
▪ Parasitos da mucosa intestinal:
- Homem,
- Cães,
- Gatos,
- Macacos
Filo Sarcomastigophora
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1. Entamoeba coli, E. histolytica
✓ Formas evolutivas
▪ Trofozoíto
▪ Cisto
Filo Sarcomastigophora
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Água e alimentos
contaminados com cistos
Úlceras → corrente
sanguínea →
fígado, pulmão, rim
e cérebroID e IG → Divisão binária
→ trofozoítos → mucosa
Desencistamento: ID e IG
Soltam-se →
desidratação → pré-
cistos → cistos
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Entamoeba coli
X
E. histolytica
*Disenteria amebiana humana
Filo Sarcomastigophora
1. Entamoeba – Importância
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▪ Saúde Pública
▪ 100.000 óbitos por ano: humanos
▪ Maioria assintomático
Filo Sarcomastigophora
1. Entamoeba – Importância
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Disseminação:
▪ Condições precárias de higiene
▪ Falta de educação sanitária
▪ Alimentação inadequada
Filo Sarcomastigophora
1. Entamoeba
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Controle:
▪ Adequadas condições de higiene
▪ Sistemas de coleta e tratamento de esgotos
▪ Água potável
▪ Tratar animais doentes e afastá-los
Filo Sarcomastigophora
1. Entamoeba
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2. Trichomonas
Reino Protozoa
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2. Gênero Trichomonas
▪ Filo Sarcomastigophora
▪ Subfilo Mastigophora
- Família Trichomonadidae
Espécie: Trichomonas foetus
T. vaginalis
Filo Sarcomastigophora
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2. Trichomonas
▪ Locomoção
▪ Hospedeiros
▪ Localização
▪ Forma evolutiva
Filo Sarcomastigophora
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Trichomonas foetus
Fonte: Foresty (2005)
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2. Tritrichomonas sp – Importância
- Vaginite
- Endometrite
- Orquite, epididimite
- Aborto precoce
- Infertilidade
▪ Não é uma zoonose
Filo Sarcomastigophora
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3. Giardia
Giardíase
Reino Protozoa
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3. Gênero Giardia
▪ Filo Sarcomastigophora
▪ Subfilo Mastigophora
- Família Hexamitidae
Espécie: Giardia lamblia (G. duodenalis, G. intestinalis)
Filo Sarcomastigophora
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3. Giardia spp.
▪ Locomoção
▪ Parasito da mucosa intestinal (ID):
- homem,
- cão,
- gato,
- caprino,
- roedores
Filo Sarcomastigophora
- bovino,
- répteis
- aves
- anfíbios
![Page 27: VET05596 REINO PROTOZOA - files.lipp-hovet-ufes.webnode.comfiles.lipp-hovet-ufes.webnode.com/200000441-f24fef34a8/Reino... · Filo Sarcomastigophora Entamoeba Trichomonas Giardia](https://reader034.fdocuments.net/reader034/viewer/2022051407/5be19e6209d3f232098d8ee6/html5/thumbnails/27.jpg)
3. Giardia lamblia
✓ Formas evolutivas
▪ Trofozoíto
▪ Cisto
Filo Sarcomastigophora
![Page 28: VET05596 REINO PROTOZOA - files.lipp-hovet-ufes.webnode.comfiles.lipp-hovet-ufes.webnode.com/200000441-f24fef34a8/Reino... · Filo Sarcomastigophora Entamoeba Trichomonas Giardia](https://reader034.fdocuments.net/reader034/viewer/2022051407/5be19e6209d3f232098d8ee6/html5/thumbnails/28.jpg)
Fonte: Adaptado de Foresty (2005)
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3. Giardia lamblia – Importância
▪ Medicina veterinária e Saúde pública
✓ um dos principais parasitos intestinais,
✓ cólica,
✓ diarreia intermitente,
✓ desidratação,
✓ perda de peso
✓ morte
Filo Sarcomastigophora
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3. Giardia lamblia
▪ Profilaxia
✓ Limpeza do ambiente
✓ Lavar bem os alimentos
✓ Água filtrada
✓ Vacinação
Filo Sarcomastigophora
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4. Histomonas
“Histomoníase”
Reino Protozoa
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4. Gênero Histomonas – Classificação
▪ Filo Sarcomastigophora
▪ Subfilo Mastigophora
- Família Monocercomonadida
Espécie: Histomonas meleagridis
Filo Sarcomastigophora
![Page 33: VET05596 REINO PROTOZOA - files.lipp-hovet-ufes.webnode.comfiles.lipp-hovet-ufes.webnode.com/200000441-f24fef34a8/Reino... · Filo Sarcomastigophora Entamoeba Trichomonas Giardia](https://reader034.fdocuments.net/reader034/viewer/2022051407/5be19e6209d3f232098d8ee6/html5/thumbnails/33.jpg)
4. Histomonas meleagridis
▪ Locomoção
▪ HD: perus e galinhas
▪ HI: Heterakis gallinarum
▪ Localização:
✓ mucosa do ceco e fígado de perus e galinhas
Filo Sarcomastigophora
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4. Histomonas meleagridis
✓ Forma evolutiva
▪ Trofozoíto
Filo Sarcomastigophora
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Trofozoíto
Fonte: Gardiner et al., 1998.
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Fonte: Silva et al., 2014.
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Heterakis gallinarum
infecta-se com o
Histomonas no ceco de
aves
Ambiente: ovos de H.
gallinarum contendo
trofozoítos de
Histomonas
Aves ingerem
os ovos de H.
gallinarum
contaminados
Ovos eclodem → liberação
trofozoítos → penetram na
mucosa intestinal → divisão
binária
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4. Histomonas meleagridis – Importância
▪ Medicina veterinária
- inflamação e ulceração do ceco
- peritonite
- hepatite
- queda de produtividade
- morte
* Perus jovens: “Cabeça negra dos perus”.
Filo Sarcomastigophora
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4. Histomonas meleagridis – Controle
▪ Não criar perus em ambientes previamente
utilizados para criação de galinhas
▪ Manter os ambientes: limpos e secos
Filo Sarcomastigophora
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5. Trypanosoma
Reino Protozoa
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5. Gênero Trypanosoma – Classificação
▪ Filo Sarcomastigophora
▪ Subfilo Mastigophora
- Família Trypanosomatidae
Espécies: Trypanosoma cruzi
T. vivax
T. evansi (T. equinum)
T. equiperdum
Filo Sarcomastigophora
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5. Trypanosoma
Filo Sarcomastigophora
▪ Seção Stercoraria
- transmissão contaminativa
- T. cruzi
▪ Seção Salivaria
- transmissão inoculativa, mecânica ou direta
- T. vivax, T. evansi, T. equiperdum
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5. Trypanosoma
5.1- T. cruzi
Reino Protozoa
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5.1 Trypanosoma cruzi
▪ HD: humanos, primatas, cães, gatos e silvestres
▪ HI: Hemíptera (barbeiros)
Filo Sarcomastigophora
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5.1 Trypanosoma cruzi
▪ Forma tripomastigota (circulante)
- forma de foice
- extremidades pontiagudas
- núcleo central grande
- membrana ondulante e flagelo livre
- cinetoplasto grande
Filo Sarcomastigophora
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5.1 Trypanosoma cruzi
▪ Forma amastigota (tecidual)
- forma arredondada ou ovalada
- núcleo grande basofílico
- flagelo reduzido, inaparente
Filo Sarcomastigophora
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Fonte: Gardiner et al., 1998.
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Fonte: AFIP.
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Tripomastigota
Promastigota - epimastigotaTripomastigota
metacíclica
Tubo digestivo
Transmissão
contaminativa
Amastigota
Reticulo
endotelial
Circulação
Tripomastigota
Coração, cólon,
esôfago
Amastigota
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Trypanosoma cruzi
▪ Transmissão:
✓ Vetor
✓ Transfusão sanguínea
✓ Congênita
✓ Acidentes de laboratório
Filo Sarcomastigophora
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5.1 Trypanosoma cruzi - Importância
▪ Humanos:
Hipertrofia de órgãos
Sintomas
Local da picada (edema) – chagoma ou sinal de
Romanã.
▪ Animais:
Reservatórios
Anemia
Filo Sarcomastigophora
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5.1 Trypanosoma cruzi - Controle
▪ Evitar habitações precárias;
▪ Combater os vetores
▪ Controle na transfusão sanguínea
Filo Sarcomastigophora
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5. Trypanosoma
5.2- T. vivax
Reino Protozoa
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5.2 Trypanosoma vivax
▪ Hospedeiros: ruminantes (bovinos e búfalos
principalmente).
▪ Vetores: Stomoxys sp. e tabanídeos.
Filo Sarcomastigophora
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5.2 Trypanosoma vivax
▪ Características morfológicas no hospedeiro vertebrado:
✓ Forma tripomastigota (circulante)
- forma de foice
- núcleo central grande
- cinetoplasto grande
- extremidade posterior mais arredondada
Filo Sarcomastigophora
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Trypanosoma vivax
Forma
tripomastigotaProbóscide:
Tripomastigota
promastigota
(divisão binária)
Forma
promastigota
Promastigotas
Céls retículo endoteliais
Amastigotas
Circulação sanguínea
Tripomastigotas
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5.2 Trypanosoma vivax - Importância
▪ Fase aguda: alta parasitemia, extensas
hemorragias (mucosas e serosas);
▪ Fase crônica: anemia grave, edemas, apatia e
caquexia;
Filo Sarcomastigophora
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▪ Caquexia
▪ Hipotrofia gelatinosa da gordura
pericárdica
▪ Edema generalizado
▪ Linfadenomegalia generalizada
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Fonte: Silva et al., 2009
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5. Trypanosoma
5.3- T. evansi (T. equinum)
Reino Protozoa
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5.3 Trypanosoma evansi
Filo Sarcomastigophora
▪ Hospedeiros:
▪ Vetor mecânico: dípteros hematófagos como
Stomoxys calcitrans e tabanídeos.
Cavalos,
burros,
bovinos,
caprinos,
suínos,
cães,
capivaras, quatis
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5.3 Trypanosoma evansi
▪ Forma tripomastigota (circulante)
- forma de foice
- núcleo central grande
- cinetoplasto quase invisível
- grânulos no citoplasma
Filo Sarcomastigophora
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Forma
tripomastigota
Forma
tripomastigota
Tripomastigotas
Céls retículo endoteliais
Amastigotas
Circulação sanguínea
Tripomastigotas
Obs.: transmissão artificial → agulhas contaminadas com sangue infectado.
Trypanosoma evansi
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5.3 Trypanosoma evansi - Importância
Filo Sarcomastigophora
▪ Normalmente ocorre doença crônica
▪ Brasil: frequente na região do Pantanal Mato-
grossense.
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5.3 Trypanosoma evansi - Importância
▪ Rápida perda de peso,
▪ anemia,
▪ febre intermitente,
▪ edema dos membros posteriores e partes ventrais,
▪ sinais neurológicos (raros),
▪ óbito
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Cedidas pelo prof. Cláudio Barros
“Mal das cadeiras”
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Fonte: Rodrigues et al., 2005; Pesq. Vet. Bras.
▪ Fraqueza e paralisia
progressiva dos
membros posteriores
▪ Sintoma principal:
andar cambaleante.
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5. Trypanosoma
5.4- T. equiperdum
Reino Protozoa
▪ Hospedeiros: equinos
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▪ Forma tripomastigota (circulante)
- núcleo bem visível
- cinetoplasto pequeno
- membrana ondulante bem visível
- grânulos no citoplasma (maior quantidade)
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▪ Medicina veterinária
“Mal do coito” ou “Durina”
Doença normalmente de caráter crônico:
emaciação,
paresia,
febre intermitente,
óbito
T. Equiperdum – Importância
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✓ Sintomas: secreção excessiva na mucosa genital e edema
da genitália
✓ Podem ocorrer abortos (casos graves)
✓ Diagnóstico
T. Equiperdum – Importância
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6. Leishmania
Reino Protozoa
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6. Gênero Leishmania – Classificação
▪ Filo Sarcomastigophora
▪ Subfilo Mastigophora
- Família Trypanosomatidae
Gênero: Leishmania sp.
Filo Sarcomastigophora
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6. Gênero Leishmania
▪ Espécies (Brasil)
- Leishmania (Viannia) braziliensis
- L. (Viannia) guyanensis
- L. (Leishmania) amazonensis
- L. (Leishmania) chagasi [L. (L.) infantum]
Filo Sarcomastigophora
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6. Gênero Leishmania
Forma amastigota
Filo Sarcomastigophora
Forma promastigota
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6.1 Leishmaniose visceral
Leishmania chagasi (L. infantum)
▪ HD: homem, cães e reservatórios silvestres
(tatú, gambá, tamanduá)
▪ HI: Lutzomyia
Filo Sarcomastigophora
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O vetor ingere
amastigotas
Probóscide -
divisão
binária
Vetor inocula promastigotas no
hospedeiro Promastigotas → macrófagos amastigotas → órgãos
Intestino:
amastigota →
promastigota
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6.2 Leishmaniose cutânea (tegumentar)
Leishmania braziliensis
▪ HD: homem, cães e reservatórios silvestres
(tatú, gambá, tamanduá)
▪ HI: Lutzomyia
Filo Sarcomastigophora
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O vetor ingere
amastigotas
Probóscide -
divisão
binária
Vetor inocula promastigotas no
hospedeiro Promastigotas → macrófagos amastigotas → órgão
Intestino:
amastigota →
promastigota
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6. Leishmaniose - Importância
▪ Zoonose endêmica na maioria dos estados do
Brasil
▪ Alta incidência
▪ Ampla distribuição geográfica
▪ Lesões desfigurantes
Filo Sarcomastigophora
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6. Leishmaniose - Controle
▪ Diagnóstico e tratamento precoce em humanos
▪ Redução da população de flebotomíneos
▪ Tratamento de cães infectados?
▪ Sacrifício dos cães infectados?
▪ Coleira repelente
▪ Vacina