Presence of a protrusion on the ventral disk of adhered trophozoites of Giardia lamblia

1999 ◽  
Vol 85 (12) ◽  
pp. 951-955 ◽  
Author(s):  
Adriana Lanfredi-Rangel ◽  
José A. Diniz Jr ◽  
Wanderley de Souza
Keyword(s):  
Giardia Lamblia ◽  
Ventral Disk

scholarly journals Nek8445, a protein kinase required for microtubule regulation and cytokinesis in Giardia lamblia

2020 ◽  
Vol 31 (15) ◽  
pp. 1611-1622
Author(s):  
Kelly M. Hennessey ◽  
Germain C. M. Alas ◽  
Ilse Rogiers ◽  
Renyu Li ◽  
Ethan A. Merritt ◽  
...  
Keyword(s):  
Cell Division ◽  
Protein Kinase ◽  
Giardia Lamblia ◽  
Cell Shape ◽  
Microtubule Array ◽  
Ventral Disk

Here we study the role of Nek8445 in regulating cell division and microtubule array organization in Giardia. Depletion of Nek8445 results in 87% of cells being stalled or blocked in cytokinesis. Nek8445 regulates ventral disk organization, funis formation, axoneme exit, and cell shape, all of which contribute to the observed cytokinesis defects.

scholarly journals A unique mechanism of nuclear division in Giardia lamblia involves components of the ventral disk and the nuclear envelope

BIOCELL ◽  
2003 ◽  
Vol 27 (3) ◽  
pp. 329-346
Author(s):  
ALBERTO J. SOLARI ◽  
MONICA I. RAHN ◽  
ALICIA SAURA ◽  
HUGO D. LUJAN
Keyword(s):  
Nuclear Envelope ◽  
Giardia Lamblia ◽  
Nuclear Division ◽  
Ventral Disk ◽  
Unique Mechanism

scholarly journals Characterization of a 29.4-kilodalton structural protein of Giardia lamblia and localization to the ventral disk [corrected]

1989 ◽  
Vol 57 (4) ◽  
pp. 1305-1310 ◽  
Author(s):  
A Aggarwal ◽  
R D Adam ◽  
T E Nash
Keyword(s):  
Giardia Lamblia ◽  
Structural Protein ◽  
Ventral Disk

EXPERIMENTAL INFECTION OF CALVES BY GIARDIA LAMBLIA CYST ISOLATION FROM HUMAN

2013 ◽  
Vol 12 (1) ◽  
pp. 159-167
Author(s):  
Ghazi yaqoob azzal
Keyword(s):  
Experimental Infection ◽  
Giardia Lamblia

Prevalência de Enteroparasitoses em Escolares: Uma Revisão do Perfil Encontrado nas Diferentes Regiões do Brasil

2012 ◽  
Vol 15 (2) ◽  
pp. 7 ◽  
Author(s):  
Valesca Francisco Pinto Menezes ◽  
Niara Da Silva Medeiros ◽  
Caroline Dani
Keyword(s):  
Ascaris Lumbricoides ◽  
Giardia Lamblia

Infecções intestinais causadas por helmintos e protozoários são consideradas uma das maiores causas de agravos por processos infecciosos no mundo. O presente estudo tem como objetivo realizar um levantamento referente aos últimos anos da prevalência de parasitas intestinais em crianças no período escolar de diversas cidades do Brasil, identificando quais as espécies mais encontradas e as regiões que necessitam de maior dedicação nesta área. Por meio dos estudos analisados, verificou-se que as regiões com maior prevalência de parasitas intestinais foram o Norte e Nordeste; entretanto, na região Sudeste os resultados foram animadores, com baixos índices de contaminação por parasitas, comparados com os de todas as regiões do Brasil. Quanto aos parasitas intestinais, os mais comuns encontrados em todas as regiões brasileiras foram o Ascaris lumbricoides e o Giardia lamblia. Portanto, pode-se concluir que a alta prevalência de enteroparasitoses encontrada em crianças de alguns locais do Brasil pode demonstrar a necessidade de maior cuidado com as condições de saneamento básico e higiene pessoal, tanto nos domicílios como nos locais de estudo. Com os dados apresentados, mostrase a importância da realização de programas educativos que venham a desenvolver a consciência pessoal dos pais, familiares e das próprias crianças.

Employing Gamma Ray Irradiated Giardia lamblia as Trialed Vaccine in Experimental Animal

2019 ◽  
Vol 9 (02) ◽  
Author(s):  
Amal Kamil Abdul Sada ◽  
Amany Mohamed Al-Kaysi
Keyword(s):  
Giardia Lamblia ◽  
Gamma Ray ◽  
Age Groups ◽  
Active Phase ◽  
Study Groups ◽  
Negative Control ◽  
Control Group ◽  
High Dose ◽  
Histopathological Changes ◽  
Gamma Irradiated

This is an experimental trial to prepare a vaccine from gamma-irradiated Giardia lamblia which is evaluated in experimental animals. The study was conducted from December 2015 to April 2016. The field survey of the parasite was conducted from those patients attending the laboratories of the Alawi Children's Hospital in Rusafa and the Al-Yarmouk Teaching Hospital in Karkh, through which 1250 stool samples of different age groups were examined. Five groups of mice were used in the study; the first was injected with normal saline and considered as a negative control group, the second was injected with cystic form of non-irradiated Giardia lamblia and considered as a positive control group, whereas the other three groups were injected with gamma irradiated Giardia lamblia at three different doses 10, 15 and 25 rad respectively. Giardia lamblia was primarily cultivated in liver infusion agar for ten days to obtain the active phase. On the sixth day, the cystic phase was purified and standardized to be used in the infection of mice with or without the exposure of gamma rays. Mice showed high sensitivity to parasitic infestation, in the gamma non-irradiated and the irradiated with gamma 10 rad, and 15 rad irradiated groups which was 100%. The results expressed an excystation process of the depleted phases and the release of the feeder phases. The results of the three irradiated groups consisted of histopathological changes of the small, and the rectum by dissection after two weeks of infection, with intestine amputation lesions, as well as ulceration and inflammation of the inflammatory cells represented in small numbers of neutrophil, lymphocytes, and eosinophils. The presence of ulceration and fall of epithelial cells in the intestinal cavity has been shown, and different forms of the parasite have been observed. Mice which was injected with irradiated G lamblia at high dose (25 rad), not show and sensitivity to the challenge infection and no excystation of thy parasite had been done. After 2 wreaks, a comparison was achieved between all study groups in which no histopathological changes were noticed in the mice irradiated with dose of25 rad. After another two weeks, a challenge dose was given (un-attenuated G lamblia) and mice were dissected after another two weeks, no changes on the level of histopathology of intestinal tissue were noticed the results suggested that mice acquire an immunity against the parasite infection.

An Epidemiological, Diagnostic and Therapeutic Study of Giardia lamblia in Anbar Province – Iraq

2019 ◽  
Vol 9 (01) ◽  
pp. 39-45
Author(s):  
Suad Shallal Shahatha
Keyword(s):  
Teaching Hospital ◽  
Rural Areas ◽  
Giardia Lamblia ◽  
Urban Areas ◽  
Culture Media ◽  
Age Groups ◽  
Stool Samples ◽  
Women And Children ◽  
Teucrium Polium L ◽  
Therapeutic Study

This study was carried out to investigate the epidemiology of Giardia lamblia parasites in patients who visited some of the hospitals in Anbar province, which included (Fallujah Teaching Hospital, Ramadi Teaching Hospital, Ramadi Teaching Hospital for Women and Children and Hit Hospital) during by examining 864 stool samples in a direct examination method, The results revealed the infection rate was 41.7 % and the percentage of infection among males 47.8% is higher than that of females 35.4% with significant differences (p≤0.05). The age groups (1-9) years recorded the highest rates 55.4% and the lowest rate 13.6% in the age group (40-49) years. The highest rate of infection was 62.5% during the month of June, while the month of October was the lowest rate 5% and significant differences. The incidence rate in rural areas was 50.6% higher than in the urban areas 32.5%. The study also included the effect of Teucrium polium L. on the parasite in the culture media HSP-1, the concentrations of 0.5-3 mg / mL significantly affected Giardia, it was noted whenever the greater the concentration, the greater the effect during different treatment periods (1-4) days, as the highest concentration 3 mg/ml killed all Giardia parasites on the fourth day of treatment.

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