Zeitschrift fur Parasitenkunde (Berlin, Germany)最新文献

Ciliates as possible food source for adult Oxyuris equi Schrank 1788. 纤毛虫作为成虫的可能食物来源。

Zeitschrift fur Parasitenkunde (Berlin, Germany) Pub Date : 1986-01-01 DOI: 10.1007/BF00931156

C Bauer

引用次数: 2

Freeze-fracture studies on Pneumocystis carinii. I. Structural alteration of the pellicle during the development from trophozoite to cyst. 卡氏肺囊虫的冻裂研究。从滋养体到包囊发育过程中膜的结构改变。

Zeitschrift fur Parasitenkunde (Berlin, Germany) Pub Date : 1986-01-01 DOI: 10.1007/BF00927890

H Yoshikawa, Y Yoshida

{"title":"Freeze-fracture studies on Pneumocystis carinii. I. Structural alteration of the pellicle during the development from trophozoite to cyst.","authors":"H Yoshikawa, Y Yoshida","doi":"10.1007/BF00927890","DOIUrl":"https://doi.org/10.1007/BF00927890","url":null,"abstract":"Pneumocystis carinii has generally been distinguished in three developmental stages, namely, trophozoite, precyst and cyst. The fine structure of the pellicle--the plasma membrane and the outer layer existing outside this plasma membrane--of each stage was studied by freeze-fracture technique. By this technique, P. carinii was cleaved through the cytoplasm or through the hydrophobic region of the plasma membrane, and the cross-fractured face of the outer layer was revealed on the replicas. The outer layer, which is electron-dense in the thin section, consisted of numerous fine granules about 15 nm in diameter in freeze-fracture images, whereas the electron-lucent middle layer which appeared in the precyst and cyst was less granular. Measurement of the intramembranous particles (IMP) also was carried out. The number of IMP per square micrometer of the plasma membrane of the trophozoite was 1,512 +/- 125 on the P face and 417 +/- 44 on the E face. In the precyst, the IMP density decreased, and 1,037 +/- 56 on the P face and 262 +/- 22 on the E face. In the cyst, it further decreased, nd 875 +/- 59 and 150 +/- 20 respectively. It is generally assumed that the density of IMP is related to the physiological activity of the cell membrane, so that the present results obtained in P. carinii suggest that the trophozoite is the most active stage, and that metabolic activity of the pellicle gradually decreases with the progress of development to the precyst then to the cyst.","PeriodicalId":76856,"journal":{"name":"Zeitschrift fur Parasitenkunde (Berlin, Germany)","volume":"72 4","pages":"463-77"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF00927890","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14613315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Immunoenzymatic demonstration of a presumptive prolactin-like substance in Hymenolepis nana. 免疫酶的证明推测催乳素样物质膜膜绦虫。

Zeitschrift fur Parasitenkunde (Berlin, Germany) Pub Date : 1986-01-01 DOI: 10.1007/BF00927745

H Kumazawa, T Moriki

引用次数: 3

Collagen immunotyping of the hepatic fibrosis in human alveolar echinococcosis. 人肺泡包虫病肝纤维化的胶原免疫分型研究。

Zeitschrift fur Parasitenkunde (Berlin, Germany) Pub Date : 1986-01-01 DOI: 10.1007/BF00927740

D A Vuitton, S Guerret-Stocker, J P Carbillet, G Mantion, J P Miguet, J A Grimaud

{"title":"Collagen immunotyping of the hepatic fibrosis in human alveolar echinococcosis.","authors":"D A Vuitton, S Guerret-Stocker, J P Carbillet, G Mantion, J P Miguet, J A Grimaud","doi":"10.1007/BF00927740","DOIUrl":"https://doi.org/10.1007/BF00927740","url":null,"abstract":"An extremely dense fibrosis is responsible for the main complications of alveolar echinococcosis (AE), a severe parasitic disease due to the development in the liver of a larval form of the cestode Echinococcus multilocularis. Immunotyping of collagens present in fibrous, granulomatous, and normal areas of the liver was performed in nine patients with AE. Immunofluorescent labelling of collagen types showed that dense fibrosis was entirely composed of thick bundles of type I and type III collagens, surrounding old parasitic vesicles with an autofluorescent laminated layer. In granulomatous areas, collagens were labelled as clusters consisting mainly of type III procollagen and collagen. Concentric bundles of type III collagen surrounded active parasitic vesicles. An enhancement of the normal labelling in portal spaces of the intact liver was present in all the patients. These results suggest that irreversible acellular keloid scar-like fibrosis observed in AE is the ultimate result of cytotoxic and fibrogenetic events related to the immune response of the host which are taking place initially in the granulomatous area surrounding the young parasite larvae.","PeriodicalId":76856,"journal":{"name":"Zeitschrift fur Parasitenkunde (Berlin, Germany)","volume":"72 1","pages":"97-104"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF00927740","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14639014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 35

The establishment of Plasmodium berghei in mosquitoes of a refractory and a susceptible line of Anopheles atroparvus. 勃氏疟原虫在顽固性和易感性atroparvus按蚊株中的建立。

Zeitschrift fur Parasitenkunde (Berlin, Germany) Pub Date : 1986-01-01 DOI: 10.1007/BF00928741

J F Sluiters, P E Visser, H J van der Kaay

{"title":"The establishment of Plasmodium berghei in mosquitoes of a refractory and a susceptible line of Anopheles atroparvus.","authors":"J F Sluiters, P E Visser, H J van der Kaay","doi":"10.1007/BF00928741","DOIUrl":"https://doi.org/10.1007/BF00928741","url":null,"abstract":"The events between the ingestion of Plasmodium berghei-infected mouse blood and the establishment of the ookinetes in the epithelium of the midgut in refractory (R) and susceptible (S) Anopheles atroparvus are described. Simultaneously fed, fully engorged female mosquitoes were randomly assigned to dissection at 22, 28, 32, 48 h and 10 days (controls) after the infective feed (post-infection: p.i.). Serial transverse sections of 6 micron were cut. Every 10th section was studied. The maturation of ookinetes was monitored at 16, 19 and 22 h p.i. The infections in R and S mosquitoes developed similarly with regard to the maturation of ookinetes and the number of mature ookinetes in the lumen of the midgut. The semiquantitative evaluation of the envelopment of the food bolus by the peritrophic layer showed that this layer cannot function as a physical barrier against migrating ookinetes. In the midgut epithelium the number of ookinetes decreased significantly with time in both R and S mosquitoes, but a similar number of penetrations was recorded for both types of mosquito. In S mosquitoes maximal 1% of the ookinetes present in the midgut formed an oocyst. In both R and S mosquitoes a substantial loss of parasites was found, first in the lumen of the midgut and second after penetration of the midgut epithelium by the mature ookinetes. Relatively few parasites develop into oocysts in S, but hardly any do so in R individuals. The factors in control of refractoriness are likely to operate on early oocyst development.","PeriodicalId":76856,"journal":{"name":"Zeitschrift fur Parasitenkunde (Berlin, Germany)","volume":"72 3","pages":"313-22"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF00928741","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14644813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Scanning electron microscopy of Leishmania major in Phlebotomus papatasi. 木瓜白蛉主要利什曼原虫的扫描电镜研究。

Zeitschrift fur Parasitenkunde (Berlin, Germany) Pub Date : 1986-01-01 DOI: 10.1007/BF00927886

A Warburg, G S Hamada, Y Schlein, D Shire

引用次数: 11

Chemotactic activity of soluble extract of Schistosoma japonicum eggs for human and monkey eosinophils. 日本血吸虫卵可溶性提取物对人和猴嗜酸性细胞的趋化活性研究。

Zeitschrift fur Parasitenkunde (Berlin, Germany) Pub Date : 1986-01-01 DOI: 10.1007/BF00927900

Y Horii, H Matsuoka, M Owhashi

引用次数: 1

Studies on the sequence of variable antigen types in ponies infected with a clone of Trypanosoma evansi. 伊文氏锥虫克隆感染小马变抗原序列的研究。

Zeitschrift fur Parasitenkunde (Berlin, Germany) Pub Date : 1986-01-01 DOI: 10.1007/BF00931142

L Diesing, S Steuber, J S Ahmed, F Hörchner

引用次数: 1

The value of external morphology in the identification of larval anisakid nematodes: a scanning electron microscope study. 外型形态学在鉴别八角线虫幼虫中的价值:扫描电镜研究。

Zeitschrift fur Parasitenkunde (Berlin, Germany) Pub Date : 1986-01-01 DOI: 10.1007/BF00925097

M V Weerasooriya, T Fujino, Y Ishii, N Kagei

{"title":"The value of external morphology in the identification of larval anisakid nematodes: a scanning electron microscope study.","authors":"M V Weerasooriya, T Fujino, Y Ishii, N Kagei","doi":"10.1007/BF00925097","DOIUrl":"https://doi.org/10.1007/BF00925097","url":null,"abstract":"We studied larval nematodes of four genera of the Anisakidae using a scanning electron microscope (SEM). The anterior and posterior extremities and cuticular structures of the 3rd-stage larvae (L3) of Anisakis type I, Pseudoterranova decipiens, Contracaecum type B and Hysterothylacium were examined. The 4th-stage larvae (L4) of Anisakis type I, P. decipiens, recovered after infection into laboratory rats, and the L3 and L4 of Anisakis type I larvae from human were also examined in the same way. There were generic differences in the shape and size of the lip bulges, external papillary structures, the appearance of the boring tooth, the width and depth of the grooves and ridges of the cuticle and the caudal structures of the L3. In Anisakis type I and P. decipiens L3, changes were seen in the anterior extremity, cuticle and posterior extremity after molting to the L4. Similar changes can be expected in larvae infecting man. The L4 of Anisakis type I from rat and man were similar, while the L4 of Anisakis type I and P. decipiens showed differences. These ultrastructural differences might be of value in the identification of fragments recovered during endoscopy in man.","PeriodicalId":76856,"journal":{"name":"Zeitschrift fur Parasitenkunde (Berlin, Germany)","volume":"72 6","pages":"765-78"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF00925097","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14916792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Goussia ethmalotis n.sp. (Apicomplexa: Sporozoea), a coccidian parasite of the West African Shad, Ethmalosa fimbriata Bowditch 1825, (Pisces: Clupeidae). 黄芩属植物(顶复体目:孢子虫目)，西非鲥鱼的一种球虫寄生虫，Ethmalosa fibriata Bowditch 1825，(双鱼座:棘足虫科)。

Zeitschrift fur Parasitenkunde (Berlin, Germany) Pub Date : 1986-01-01 DOI: 10.1007/BF00925103

A I Obiekezie

引用次数: 4