Abstract：
:Gonadectomized male laboratory rats were given 0.06 mg/kg estradiol benzoate daily for 14 days before being inoculated with 50 third-stage larvae of Parastrongylus malaysiensis. Hormone treatment was continued until the rats were killed. The numbers of larvae in the brain and of adult worms in the pulmonary area of the rats were determined every 7 days after the inoculation. It was found that the rats treated daily with estradiol benzoate had significantly and consistently higher numbers of larvae and adult worms as compared with the controls. The number of total leukocytes increased significantly after the rats were infected. The results show that estradiol-treated rats become susceptible to P. malaysiensis infection, which may indicate that the immunosuppressive effects of testosterone observed in earlier studies may partly be caused by estradiol that was peripherally aromatized from testosterone.
journal_name
Parasitol Resjournal_title
Parasitology researchauthors
Kamis AB,Ahmad RA,Badrul-Munir MZdoi
10.1007/BF00932628subject
Has Abstractpub_date
1994-01-01 00:00:00pages
74-7issue
1eissn
0932-0113issn
1432-1955journal_volume
80pub_type
杂志文章abstract：:Intraspecific and interspecific effects on the growth and body size of helminths are rarely studied in natural situations, yet knowing what determines helminth sizes and thus fecundity is crucial to our understanding of helminth ecology and epidemiology. The determinants of average individual worm mass were investigat...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-002-0778-1
更新日期：2003-06-01 00:00:00
abstract：:Interferon-tau (IFN-tau) treatment of Trichinella spiralis-infected BALB/c mice was investigated. The therapeutic regimen consisted of daily intraperitoneal injection of 10(4) U murine IFN-tau for 7 days, starting at 2 weeks post-infection. Striated muscle samples (diaphragm, thigh) were collected at 4, 8 and 12 weeks...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/BF00931641
更新日期：1991-01-01 00:00:00
abstract：:Efforts to derive a physical map of the genome of Eimeria tenella are being made to complement genetic mapping and to assist in the production of an integrated map. A large insert library of DNA from the Houghton (H) reference strain of E. tenella has been constructed in yeast artificial chromosomes (YACs). The librar...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s004360050349
更新日期：1998-01-01 00:00:00
abstract：:Hepatozoon aegypti Bashtar, Boulos & Mehlhorn, 1984 was first described from the blood of the diadem snake (Spalerosophis diadema) in Egypt. During an investigation of the diversity of reptilian haemogregarines in Saudi Arabia, seven diadem snakes (100% of the sample) were found to be highly parasitised by H. aegypti,...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-018-6006-4
更新日期：2018-10-01 00:00:00
abstract：:A case of orotracheal myiasis in an 80-year-old man in coma for 1 week in the intensive care unit of Baskent University Hospital, Ankara, Turkey, is reported. A number of larvae of Wohlfahrtia magnifica were recovered repeatedly from the mouth and from the intubation tube of the patient and were reared to adults to fa...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s004360050203
更新日期：1997-01-01 00:00:00
abstract：:Haemosporidian blood parasites of the Plasmodium genus are the causative agents of avian malaria in many parts of the world. Despite the great diversity of Brazilian avifauna, few studies have been conducted to examine the haemosporidians of wild birds found in the Brazilian Atlantic Forest, especially those kept in c...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-017-5465-3
更新日期：2017-07-01 00:00:00
abstract：:Haemonchus contortus isolates were evaluated for benzimidazole (BZ) resistance or susceptibility by allele-specific PCR based on β-tubulin isotype 1 gene polymorphisms at the F167Y, E198A, and F200Y sites. Two isolates, one presumed susceptible from wild pronghorn antelope (PH) and one known to be resistant from goats...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-016-5357-y
更新日期：2017-02-01 00:00:00
abstract：:Prior studies have shown that filarial nematodes can effectively metabolize hydrogen peroxide in excess of that generated by activated host cells. However, the mechanisms of H2O2 removal by the filarial parasites are unclear. Herein we report the results of studies carried out on the biochemical activity and on immuno...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s004360050032
更新日期：2000-03-01 00:00:00
abstract：:The internal transcribed spacer (ITS) region was used to study the intraspecies variation of Brugia spp. in cat reservoirs. Blood specimens from seven naturally infected cats were collected from two different geographical brugian-endemic areas in Thailand. The DNAPAR tree of these Brugia spp. was constructed using a m...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-009-1352-x
更新日期：2009-06-01 00:00:00
abstract：:Research on the infection of snails by trematodes has been conducted in Europe for over a hundred years. The initial poor knowledge of the intra-molluscan stages of these parasites together with the difficulty of classifying them constituted a serious obstacle to the undertaking of integrated parasitological and malac...
journal_title：Parasitology research
pub_type： 杂志文章,评审
doi：10.1007/s00436-009-1462-5
更新日期：2009-08-01 00:00:00
abstract：:A comprehensive survey to document the presence of free-living amoebae of the genus Acanthamoeba was conducted in tap water and sea water sources related to human environments in Tenerife, Canary Islands, Spain. Acanthamoeba identification was based on the morphology of cyst and trophozoite forms and PCR amplification...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-005-1301-2
更新日期：2005-03-01 00:00:00
abstract：:Distinct sequences of Giardia duodenalis assemblages raised the hypothesis that certain assemblages may contribute to its clinical outcome. However, sequences analysis is time consuming, expensive, and needs many manual operations. Nested PCR targeting intergenic spacer (IGS) region was applied successfully to genotyp...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-016-5347-0
更新日期：2017-02-01 00:00:00
abstract：:Over a 4-year period, we analyzed 128 fecal samples from free-living elk (Alces alces L., 1758) to determine the prevalence of Eimeria infections and identify the species present. Two eimerian species were isolated including Eimeria alces and a morphotype resembling Eimeria catubrina. Overall, two samples from 128 sam...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-012-3262-6
更新日期：2013-05-01 00:00:00
abstract：:Two of the three vector species of Schistosoma mansoni Sambon, 1907 in Brazil occur in the state of Maranhão: Biomphalaria glabrata (Say, 1818) and Biomphalaria straminea (Dunker, 1848). For the implementation of effective measures to combat schistosomiasis, it is necessary to identify the spatial and seasonal dynamic...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-018-5810-1
更新日期：2018-05-01 00:00:00
abstract：:Hassalstrongylus epsilon is a small nematode, whose adult forms are found among the intestinal microvilli of the water rat Nectomys squamipes, Brants 1827 (Rodentia: Muridae). The external appearance of the cuticle, which presents transversal striations and longitudinal ridges, is described using scanning electron mic...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-003-0845-2
更新日期：2003-07-01 00:00:00
abstract：:A multicomponent DNA vaccine, encoding Toxoplasma gondii GRA1 and SAG1, was constructed and tested for its ability to confer protection. BALB/c mice were challenged with tachyzoites of the virulent T. gondii RH strain at 4 weeks following the last immunization, and immune responses and survival times were observed. Th...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-012-3047-y
更新日期：2012-11-01 00:00:00
abstract：:Schistosomiasis japonica remains one important public health concern that cause great loss of humans' health and social-economic development in the Peoples' Republic of China. At the end of 1990s and the beginning of 2000s, there were still about 0.8 million patients and nearly 85 million people living in the epidemic...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-013-3295-5
更新日期：2013-04-01 00:00:00
abstract：:Malaria remains a serious health problem in many parts of the world. It causes high morbidity and claims many lives in developing countries each year. Humans are generally infected by four species of malaria parasites. However, malaria infection caused by Plasmodium malariae or P. falciparum is recognized as an import...
journal_title：Parasitology research
pub_type： 杂志文章,评审
doi：10.1007/s00436-007-0650-4
更新日期：2007-10-01 00:00:00
abstract：:The use of pyrethroids to control the human head louse, Pediculus humanus capitis De Geer (Anoplura: Pediculidae), has suffered considerable loss of efficacy due to the evolution of resistance. Thus, the development of efficiently insecticide delivery systems is imperative for the control of head lice. We studied the ...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-017-5510-2
更新日期：2017-08-01 00:00:00
abstract：:We present a novel and simple technique for storing live Acanthamoeba for long periods of time. The amoebae are maintained at refrigerator temperatures in a peptone-yeast extract-glucose (PYG) medium normally used for cultivation. Using this method, we obtained survival rates of at least 4 years for Acanthamoeba polyp...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-008-1304-x
更新日期：2009-03-01 00:00:00
abstract：:Vector-borne diseases caused by mosquitoes are one of the major economic and health problems in many countries. The Aedes aegypti mosquito is a vector of several diseases in humans like yellow fever and dengue. Vector control methods involving the use of chemical insecticides are becoming less effective due to develop...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-014-3811-2
更新日期：2014-05-01 00:00:00
abstract：:In life cycle of Angiostrongylus costaricensis, veronicellidae mollusks participate as the invertebrate host while rodents as the main vertebrate host. The current work shows a sequential larval development of A. costaricensis in Sarasinula marginata, individually killed and digested from day 1 to 43, post infection. ...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-007-0834-y
更新日期：2008-04-01 00:00:00
abstract：:Gastrointestinal nematode (GIN) infections are a common constraint to small ruminant industry throughout the world, and among those, haemonchosis has its own significance. Control of GIN primarily relies on the use of anthelmintics, but this approach has become less reliable due to the development of resistance in GIN...
journal_title：Parasitology research
pub_type： 杂志文章,评审
doi：10.1007/s00436-011-2576-0
更新日期：2011-12-01 00:00:00
abstract：:During investigations of fish parasites in the Neotropics (including the state of Veracruz and the Yucatán Peninsula in the Gulf of Mexico, the Chautengo Lagoon on the Pacific coast of the state of Guerrero in Mexico, and Lake Gatun in the Panama Canal), three monogenoidean (Dactylogyridae) species were found parasiti...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-009-1442-9
更新日期：2009-09-01 00:00:00
abstract：:This study was conducted to evaluate the efficacy of a new topical ectoparasiticidal spot-on containing 4.95% dinotefuran (w/w), 36.08% permethrin (w/w) and 0.44% pyriproxyfen (w/w) (Vectra 3D, Ceva, Libourne, France) against Portuguese strain of Phlebotomus perniciosus and a French strain of Ctenocephalides canis in ...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-013-3568-z
更新日期：2013-11-01 00:00:00
abstract：:Mosquitoes transmit dreadful diseases to human beings wherein biological control of these vectors using plant-derived molecules would be an alternative to reduce mosquito population. Aqueous leaf extract and green synthesized silver nanoparticles (Ag NPs) from Pedilanthus tithymaloides (L.) Poit. were investigated for...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-012-3138-9
更新日期：2013-01-01 00:00:00
abstract：:Histochemical investigations of Sarcocystis microcysts found in two hindleg muscles of cats were carried out. Genus identification was based on the reinforced cyst membrane structure and its dimensions, the structure of the sarcocysts, and an electron microscopic survey of bradyzoite characteristics. The cyst membrane...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/BF00932712
更新日期：1988-01-01 00:00:00
abstract：:The involvement of protein kinase C in the initiation of free oxygen radical generation by rat leukocytes in response to the nematode Nippostrongylus brasiliensis was investigated. Inhibitors of protein kinase C, trifluoperazine and 1-(5-isoquinolinylsulfonyl)-2-methylpiperazine (H-7), inhibited free radical generatio...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/BF00928421
更新日期：1991-01-01 00:00:00
abstract：:Feline lungworms infect the respiratory tract of wild and domestic cats, causing infection often associated with clinical disease. Until recently, Aelurostrongylus abstrusus has been considered the most relevant species of lungworm, while Troglostrongylus brevior was considered of less significance. Fecal samples of f...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-020-06852-8
更新日期：2020-10-01 00:00:00
abstract：:Human toxocariasis may be acquired by eating raw chicken liver. However, there are no reports on the prevalence of natural infection of chickens with Toxocara. The aim of this study was to evaluate the presence of anti-Toxocara antibodies as indicators of natural infection with Toxocara, in free-range chickens from Es...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-015-4669-7
更新日期：2015-11-01 00:00:00
