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Forensic Science International 1985Different ciliated protozoa are observed by the immersion of dead bodies in soft water. In death from drowning a ciliated Tetrahymena kind was discovered whose size and...
Different ciliated protozoa are observed by the immersion of dead bodies in soft water. In death from drowning a ciliated Tetrahymena kind was discovered whose size and hemotactism facilitate in a priviliged way the penetration in the internal medium through pulmonary channels. Diagnosis in blood was easy by putting this organism in culture. This method had an astonishing power of reproduction. This search fortunately completes the series about diatoms by means of corroboration on the diagnosis of drowning.
Topics: Adolescent; Adult; Cadaver; Ciliophora; Drowning; Female; Humans; Infant; Male; Middle Aged; Mouth; Tetrahymena; Urethra; Vagina; Wounds and Injuries
PubMed: 3930358
DOI: 10.1016/0379-0738(85)90065-9 -
Journal of Wildlife Diseases Oct 2004A total of 12 gastrointestinal tracts of wild boars (Sus scrofa) from western Iran (Luristan) were examined for protozoan infection between September 2000 and November...
A total of 12 gastrointestinal tracts of wild boars (Sus scrofa) from western Iran (Luristan) were examined for protozoan infection between September 2000 and November 2001. Of 12 boars examined, 67% harbored one or more species of the following protozoa: Balantidium coli (25%), Tritrichomonas suis (25%), Blastocystis sp. (25%), Entamoeba polecki (17%), Entamoeba suis (8%), Iodamoeba butschlii (17%), and Chilomastix mesnili (8%). Four of these protozoan species also are reported in humans, and persons living in rural areas where wild boars are abundant should take precaution to avoid infection.
Topics: Animals; Disease Reservoirs; Female; Gastrointestinal Tract; Iran; Male; Protozoan Infections, Animal; Public Health; Sus scrofa; Swine Diseases
PubMed: 15650104
DOI: 10.7589/0090-3558-40.4.801 -
The Science of the Total Environment Nov 2017Giardia intestinalis, Cryptosporidium spp., Entamoeba histolytica and Dientamoeba fragilis are parasitic protozoa and causative agents of gastroenteritis in humans. G....
Giardia intestinalis, Cryptosporidium spp., Entamoeba histolytica and Dientamoeba fragilis are parasitic protozoa and causative agents of gastroenteritis in humans. G. intestinalis and Cryptosporidium spp. in particular are the most common protozoa associated with waterborne outbreaks in high-income countries. Surveillance of protozoan prevalence in wastewater and evaluation of wastewater treatment removal efficiencies of protozoan pathogens is therefore imperative for assessment of human health risk. In this study, influent and effluent wastewater samples from three wastewater treatment plants in Sweden were collected over nearly one year and assessed for prevalence of parasitic protozoa. Quantitative real-time PCR using primers specific for the selected protozoa Cryptosporidium spp., G. intestinalis, E. histolytica, Entamoeba dispar and D. fragilis was used for protozoan DNA detection and assessment of wastewater treatment removal efficiencies. Occurrence of G. intestinalis, E. dispar and D. fragilis DNA was assessed in both influent (44, 30 and 39 out of 51 samples respectively) and effluent wastewater (14, 9 and 33 out of 51 samples respectively) in all three wastewater treatment plants. Mean removal efficiencies of G. intestinalis, E. dispar and D. fragilis DNA quantities, based on all three wastewater treatment plants studied varied between 67 and 87%, 37-75% and 20-34% respectively. Neither E. histolytica nor Cryptosporidium spp. were detected in any samples. Overall, higher quantities of protozoan DNA were observed from February to June 2012. The high prevalence of protozoa in influent wastewater indicates the need for continued monitoring of these pathogens in wastewater-associated aquatic environments to minimise the potential risk for human infection.
Topics: Cryptosporidium; DNA, Protozoan; Dientamoeba; Entamoeba; Feces; Giardia lamblia; Sweden; Wastewater; Water Purification
PubMed: 28458199
DOI: 10.1016/j.scitotenv.2017.04.015 -
International Journal For Parasitology Apr 1977
Topics: Animals; Eukaryota; Fishes
PubMed: 873688
DOI: 10.1016/0020-7519(77)90073-x -
Archives of Microbiology Jun 2022We evaluated the effect of phytogenic additive Prosopis juliflora on populations of ruminal ciliated protozoa and its correlation with variables related to sheep...
We evaluated the effect of phytogenic additive Prosopis juliflora on populations of ruminal ciliated protozoa and its correlation with variables related to sheep nutrition. In this experiment, five cannulated adult Santa Ines ewes were submitted to the additive intake. Each animal received 6 mL of the extract daily. The experimental design adopted was the Latin square 5 × 5 (five concentrations of additive 0, 200, 400, 600 and 800 mg/mL of water and five periods of 18 days). The additive quadratically reduces the number of large, small and total ciliating protozoa, without promoting changes in the number of medium protozoa in the rumen. Among the genera investigated, Isotricha and Dasytricha were the only ones affected by supplementation. Additionally, the concentration of ruminal protozoa correlates significantly with the variables related to the nutrition of the animal. The effects of the additive on these variables were particularly pronounced at concentrations around 600 mg/mL.
Topics: Animals; Ciliophora; Female; Prosopis; Rumen; Sheep
PubMed: 35751758
DOI: 10.1007/s00203-022-03041-2 -
The Journal of Protozoology Nov 1982The nomenclature of three genera in the family Haemogregarinidae (Haemogregarina, Karyolysus, and Hepatozoon) has been reviewed and the following new names are...
The nomenclature of three genera in the family Haemogregarinidae (Haemogregarina, Karyolysus, and Hepatozoon) has been reviewed and the following new names are introduced to replace homonyms or for previously unnamed species: haemogregarina carlosi n. nom., in the erythrocytes of the lizard Lacerta ocellata; Haemogregarina tincae n. nom., in the stomach and intestine of the tench Tinca tinca; Hepatozoon insectivorae n. sp., in the leucocytes of the shrews Sorex araneus and Crocidura leucodon; Hepatozoon krampitzi n. sp., in the leucocytes of the vole Microtus oeconomus; Hepatozoon peromysci n. sp., in the leucocytes of the deermice Peromyscus boylii and P. truei gilberti; and Hepatozoon pallida (Pessoa et al., 1971) n. comb., in the erythrocytes of the snake Thamnodynastes pallidus nattereri.
Topics: Animals; Arvicolinae; Coccidia; Fishes; Lizards; Peromyscus; Shrews; Snakes; Terminology as Topic
PubMed: 6757414
DOI: 10.1111/j.1550-7408.1982.tb01344.x -
Journal of Medical Primatology Dec 1996The faunistic results regarding intestinal parasitism by protozoa and helminths in 21 primate species (three Cebidae, thirteen Cercopithecidae, one Hylobatidae, one...
The faunistic results regarding intestinal parasitism by protozoa and helminths in 21 primate species (three Cebidae, thirteen Cercopithecidae, one Hylobatidae, one Lemuridae, three Pongidae) are reported. The primate species were housed in four separate galleries. Six faecal samples of each host species were subjected to coprological analysis. Fifteen parasite species were detected: 11 protozoa (Entamoeba coli, E. chattoni, E. hartmanni, Iodamoeba bütschlii, Endolimax nana, Giardia intestinalis, Chilomastix mesnilii, Enteromonas hominis, Trichomonas intestinalis, Balantidium coli, and Blastocystis hominis) and 4 helminths (Ancylostoma sp., Strongyloides fuelleborni, Strongyloides sp., and Trichuris trichiura). The results reveal certain parasitic similarities between host species housed in the same gallery; however, these primate species do not always carry identical parasite species.
Topics: Animals; Animals, Zoo; Eukaryota; Helminthiasis; Helminthiasis, Animal; Helminths; Host-Parasite Interactions; Intestinal Diseases; Primate Diseases; Primates; Protozoan Infections; Protozoan Infections, Animal; Spain
PubMed: 9210027
DOI: 10.1111/j.1600-0684.1996.tb00038.x -
The Journal of Eukaryotic Microbiology 2001Extensive colonization of the rhizosphere by beneficial bacteria is desirable but it is not yet clear whether the feeding patterns of protozoa exert any ecological...
Extensive colonization of the rhizosphere by beneficial bacteria is desirable but it is not yet clear whether the feeding patterns of protozoa exert any ecological impact on the competence of bacteria in the rhizosphere. To determine whether the successful colonization of the rhizosphere by bacteria can be explained by inherent abilities of the bacteria to resist predation, six bacteria categorized as poor, mediocre or good rhizosphere colonists were tested. The populations of protozoa in the rhizosphere consistently increased to a maximum density in two days but then declined to a stable level. Grazing by protozoa increased the doubling time of all of the test bacteria but did not significantly affect the final densities of bacteria in the rhizosphere. The differences in the colonization ability of the six bacteria tested were not attributable to inherent differences in their susceptibility to predation by protozoa.
Topics: Acanthamoeba; Animals; Arthrobacter; Bradyrhizobium; Comamonas; Ecology; Predatory Behavior; Soil Microbiology; Glycine max
PubMed: 11411840
DOI: 10.1111/j.1550-7408.2001.tb00320.x -
European Journal of Protistology Aug 2014The methods used for culturing rumen protozoa were found to be unsatisfactory for growth of ciliate protozoa from the kangaroo forestomach. Based on published...
The methods used for culturing rumen protozoa were found to be unsatisfactory for growth of ciliate protozoa from the kangaroo forestomach. Based on published measurements of physical parameters in the marsupial forestomach, several modifications were incorporated into the procedure, i.e., an increase in % hydrogen in the gas phase, adjustment of initial pH of the medium to 6.9-7.0 range, feed only forage as a substrate and incubate at a lower temperature (33-36 °C). Only incubation at the lower temperature increased survival time of the kangaroo protozoa. Two species of Bitricha were still viable after 28 d in culture. Cultures had to be terminated at that time. One of the species differed considerably in size and shape from previously described species and based on 18S rRNA data, may represent a new species of Bitricha. The second species, present in low numbers was identified as Bitricha oblata. In a separate trial, Macropodinium yalanbense survived for 11 d, at which time these cultures also had to be terminated.
Topics: Animals; Ciliophora; Culture Media; Culture Techniques; Female; Gastrointestinal Contents; Macropodidae; Male; Species Specificity; Survival Analysis
PubMed: 25051515
DOI: 10.1016/j.ejop.2014.04.001 -
Parasitology Research Apr 2023Diarrheal diseases are one of the main health problems worldwide, especially in developing countries with poor health systems, high rates of poverty, and poor nutrition....
Change in the incidence of intestinal diseases caused by parasitic protozoa in the Mexican population during the period (2015-2019) and its association with environmental and socioeconomic risk factors.
Diarrheal diseases are one of the main health problems worldwide, especially in developing countries with poor health systems, high rates of poverty, and poor nutrition. The main causative agents of diarrheal disease are bacteria, viruses, and parasites; among the latter, the intestinal protozoa Giardia and Entamoeba stand out. In the present work, a observational analysis of the national surveillance data of amebiasis, giardiasis, and other protozoan intestinal infections was carried out. The data issued by the Directorate General of Epidemiology was analyzed to establish its relationship with geography, socioeconomic, and environmental conditions in Mexico during the 2015-2019 period. New cases of amebiasis decreased by 25.03% between 2015 and 2019, while giardiasis and other protozoan intestinal infections remained constant; in all cases, incidence was higher in females than in males, and children under 5 years of age were the most affected. The contribution of environmental conditions (seasonality, temperature, and humidity) and socioeconomic factors in the number of protozoan intestinal infection cases was assessed by a multivariable regression model using a backward selection procedure. Peaks in cases were observed in spring and summer, which are characterized by warm and humid climates. Additionally, states with high humidity and annual average temperature contribute to a notably higher incidence of these parasites, especially annual average temperature, as demonstrated through multivariable linear regression models. Moreover, the majority of these states have the largest population living in poverty with inadequate measures for the distribution, dispensing, and sanitation of water. These data are essential to incidence rate monitoring and focus efforts on eliminating risk factors and improving health programs in Mexico.
Topics: Child; Male; Animals; Female; Humans; Child, Preschool; Giardiasis; Intestinal Diseases, Parasitic; Incidence; Parasites; Mexico; Amebiasis; Intestinal Diseases; Socioeconomic Factors; Diarrhea; Risk Factors; Prevalence; Feces
PubMed: 36820929
DOI: 10.1007/s00436-023-07798-3