bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ultrastructural characteristics of the uterine epithelium of aspidogastrean and digenean trematodes
Authors: Poddubnaya Larisa , Levron Céline , Gibson David 
Published: May 2011

AbstractThe ultrastructure of the uterus proper of the aspidogastrean Aspidogaster limacoides Diesing, 1835 and two digenean species, Phyllodistomum angulatum Linstow, 1907 (Plagiorchiida, Gorgoderidae) and Azygia lucii (Müller, 1776) (Strigeida, Azygiidae), was examined by transmission electron microscopy (TEM). The uterine epithelial lining of these species is thin, except for the perinuclear region of the epithelial cells. Septate junctions occur between adjacent epithelial cells within the uterine wall. The luminal surface of the cells is elevated into microlamellae, which project into the uterine lumen and cover the entire epithelial lining. Basally the uterine epithelium is attached to a basal matrix, and its supporting layers of muscle fibres are weak and composed of scattered circular muscles. Despite the marked similarity in the ultrastructural pattern of the aspidogastrean and two digeneans studied, there is some degree of variation in the secretory activity of their uterine epithelium. The high level of vesicular exocytotic activity in the epithelial cytoplasm of A. lucii may be associated with differences in egg emission and the subsequent life cycle involving a non-ciliated, non-swimming and non-free-living miracidium, as opposed to the free-swimming miracidium of P. angulatum. The similar nature of the uterine epithelium in all three species studied represents an ultrastructural marker possibly supporting a close phylogenetic relationship between the Aspidogastrea and the Digenea.
A new species of Prosorhynchoides (Trematoda, Bucephalidae) from the intertidal rocky zone of central Chile
Authors: Muñoz Gabriela , Bott Nathan 
Published: May 2011

AbstractA new bucephalid species, Prosorhynchoides carvajali sp. nov. is described. This parasite was found in three marine fish, Auchenionchus microcirrhis (type-host), A. variolosus and Sicyases sanguineus (other-hosts), collected from the intertidal rocky zones of central Chile. P. carvajali sp. nov. is characterized by a pharynx in a post-equatorial position, a large cirrus sac length (half of the total worm length) and rounded caecum extending dorsally and anteriorly from pharynx. Although Prosorhynchoides carvajali sp. nov. closely resembles P. labiata; the latter has an elongated, narrow and inverted-U-shape caecum, contrasting to P. carvajali sp. nov. which has a larger rounded caecum, directed anteriorly. To our knowledge this is the first known report of Prosorhynchoides on the South American Pacific coast.
First in vitro isolation of Neospora caninum from a naturally infected adult dairy cow in Slovakia
Authors: Reiterová Katarína , Špilovská Silvia , Čobádiová Andrea , Mucha Rastislav 
Published: May 2011

AbstractThe impact of in vitro isolation and molecular characterisation of Neospora caninum as well as sequence analyses was studied. The brain homogenate of a naturally Neospora-infected dairy cow (positive in ELISA and Western blot) was intraperitoneally inoculated into Mongolian gerbils (Meriones unguiculatus). The brain of gerbils on day 60 post-inoculation was homogenized, and, after trypsin-digestion, cultured on Vero cells. Neospora-like tachyzoites were first observed after 77 days of cultivation. The parasite was confirmed by polymerase chain reaction (PCR) using Neospora-specific primers Np21 and Np6. The PCR product of the first Slovak isolate (NC-SKB1) was subsequently sequenced and published in GenBank under accession number GU300774. Sequencing and BLAST search identified the isolate as N. caninum.
Falcaustra sinensis sp. nov. (Nematoda, Kathlaniidae) from Indotestudo elongata in China
Authors: Liu Baochen , Zhang Shuqian , Zhang Luping 
Published: May 2011

AbstractFalcaustra sinensis sp. nov. collected from the feces of Indotestudo elongata (Blyth) is described and illustrated. The new species can be distinguished from the congeners by the arrangement of caudal papillae of the male (6 pairs precloacal, 4 pairs postcloacal, 1 median), length of spicules (3.84–4.74 mm) and the presence of pseudosucker.
Philometra chilensis (Nematoda, Philometridae) affects the fecundity of the red cusk-eel, Genypterus chilensis (Guichenot) (Pisces, Ophidiidae) in Chile
Authors: Chávez Rosa , Oliva Marcelo 
Published: May 2011

AbstractThe occurrence of the dracunculoid nematode Philometra chilensis Moravec, Chávez et Oliva, 2011 (Philometridae) infecting the ovary of the red cusk-eel, Genypterus chilensis (Guichenot), off the Pacific coast of northern Chile is reported. A sample of 266 fish specimens (total body length 34–96 cm) revealed the nematode overall prevalence (April 2007) of this parasite to be 18.5% and the mean intensity of infection 17.9 (SD = 30.8). All infected fish were mature females. The present results suggest that infection by the nematode shows seasonality and coincides with specific reproductive stages of the red cusk-eel, a partial spawner, and as a result the infection can affect the reproductive success of the host.
Alloglossidium fonti sp. nov. (Digenea, Macroderoididae) from black bullheads in Minnesota with molecular differentiation from congeners and resurrection of Alloglossidium kenti
Authors: Tkach Vasyl , Mills Andrew 
Published: May 2011

AbstractAlloglossidium fonti sp. nov. is described based on specimens from black bullheads (Ameiurus melas) collected from several localities in northwestern Minnesota. The new species is morphologically closest to A. corti and A. geminum. These two species were also found in the same region as A. fonti sp. nov. and sometimes in the same individual fish. Examination of numerous genetically marked specimens has demonstrated that the most reliable distinguishing feature among the three species is the position of anterior margin of the vitelline fields. In the new species they are situated at the level of anterior margin of ventral sucker while in A. corti it is at the level of intestinal bifurcation or even further anteriorly, and in A. geminum it is at the level of posterior margin of ventral sucker or further posteriorly. The new species has a relatively smaller cirrus sac than A. geminum. Despite rather minor, albeit stable morphological differences, the molecular data strongly supported the status of A. fonti sp. nov. as a new species. Moreover, molecular data and morphological examination of new material suggested that A. kenti, earlier synonymized with A. corti, is a valid species that is resurrected here. Comparison of 2420 base long sequences of nuclear rDNA (partial 18S, complete ITS region, and partial 28S) obtained from multiple specimens of all 4 species collected in Minnesota, North Dakota, Nebraska and Mississippi, showed essentially no intraspecific variability (except for 1 base difference in the ITS2 region of A. fonti sp. nov.), but has demonstrated pronounced interspecific differences. The new species was not found in the four examined catfish species from the Red River of the North (on the border between North Dakota and Minnesota) and neighbouring North Dakota.
Spermatological characters of Acanthobothrium crassicolle Wedl, 1855 (Tetraphyllidea, Onchobothriidae), a parasite of the common stingray Dasyatis pastinaca
Authors: Marigo Adji , Eira Catarina , Bâ Cheikh , Miquel Jordi 
Published: May 2011

AbstractWe describe the spermiogenesis process and the ultrastructural characters of the spermatozoon of Acanthobothrium crassicolle by means of transmission electron microscopy, including cytochemical analysis for glycogen. Spermiogenesis in A. crassicolle begins with the formation of the differentiation zone that contains two centrioles associated with striated rootlets and an intercentriolar body. The latter is formed by one electron-dense layer. The centrioles develop into two free flagella that first grow orthogonally to a median cytoplasmic process and then undergo flagellar rotation becoming parallel to that median cytoplasmic process. After flagellar rotation only one of the flagella completes its growth and both short and long flagella undergo proximodistal fusion with the median cytoplasmic process. In the final stages of spermiogenesis, the nucleus becomes filiform and migrates into the spermatid body. Later, the ring of arched membranes constricts and the spermatozoon is liberated from the residual cytoplasm. The ultrastructural organization of the spermatozoon of A. crassicolle follows the general pattern of spermatozoa of the other Tetraphyllidea-Onchobothriidae species, but exhibits some differences. It is filiform, tapered at both extremities and lacks mitochondrion. It contains two axonemes of unequal length showing the 9 + “1“ pattern of Trepaxonemata, a nucleus, parallel cortical microtubules and electron-dense granules of glycogen. The anterior extremity of the male gamete contains a single crested body surrounding a thin and long apical cone. This type of apical cone has never been described in a tetraphyllidean spermatozoon. Another particularity is the presence of a single electron-dense microtubule at the vertex of the crested body.
Ultrastructural and cytochemical study on vitellogenesis in the diphyllidean cestode Echinobothrium euterpes (Echinobothriidae) and its phylogenetical implications
Authors: Świderski Zdzisław , Mackiewicz John , Eira Catarina , Miquel Jordi 
Published: May 2011

AbstractThe first description of vitellogenesis in the Diphyllidea is presented in this paper. Though the type of vitellogenesis and mature vitellocyte in Echinobothrium euterpes appear to be unique among the Eucestoda, however, they somewhat resemble that observed in the two orders of the lower cestodes, Tetraphyllidea and Proteocephalidea. Vitellocyte maturation is characterized by: (1) an increase in cell volume; (2) extensive development of short, parallel, frequently concentric cisternae of GER that produce dense proteinaceous granules; (3) development of Golgi complexes engaged in packaging this material; (4) progressive formation of saturated lipid droplets; their continuous enlargement and fusion; (5) formation of small accumulations of glycogen particles scattered between and among lipid droplets in the cytoplasm of maturing vitellocytes; (6) concentration of dense proteinaceous granules in the peripheral layer of cytoplasm, around the cell plasma membrane; and (7) vacuolization of cytoplasm of mature vitellocytes accompanied by a rapid increase in its volume. A new, unreported type of dense proteinaceous granules, situated around the limiting plasma membranes of mature vitellocytes, is described. Vitellogenesis evidently differs from that with typical shell-globules and shell-globule clusters previously reported in other taxa of lower cestodes. Cytochemical staining with periodic acidthiosemicarbazide-silver proteinate for glycogen indicates a strongly positive reaction for glycogen particles between and around large unsaturated lipid droplets of the maturing and mature vitellocytes. Some hypotheses concerning the interrelationship between this pattern of vitellogenesis, possible mode of egg formation, embryonic development and diphyllidean life cycle, and their phylogenetic implications are drawn and discussed.
Cosmocerca kalesari sp. nov. (Nematoda, Cosmocercidae) in Euphlyctis cyanophlyctis (Amphibia, Anura) from Kalesar Wildlife Sanctuary, Haryana, India
Authors: Rizvi Anjum , Bursey Charles , Bhutia Pasang 
Published: May 2011

AbstractCosmocerca kalesari sp. nov. from the large intestine of frogs, Euphlyctis cyanophlyctis, collected in the Kalesar Wildlife Sanctuary, India is described and photomicrographed. It is most similar to those species bearing 5 pairs of plectanes, i.e., C. acanthurum, C. banyulensis, C. cruzi, C. japonica, C. ornata, C. novaeguineae, C. paraguayensis, C. parva, C. podicipinus and C. travassosi, but differs from these species with the exception of C. cruzi and C. japonica in the length of spicules and length of gubernaculum. The new species can be separated from C. cruzi and C. japonica by the arrangement of postanal mammiliform papillae: 6 postanal pairs in C. kalesari sp. nov.; 4 postanal pairs in C. cruzi; no postanal mammiliform papillae in C. japonica. Cosmocerca kalesari sp. nov. represents the 25th species assigned to the genus, but only the second species from the Oriental region.
Molecular and morphological identification of helminthes found in Japanese smelt, Hypomesus transpacificus nipponensis, with notes on new host records of Eustrongylides ignotus and Raphidascaris gigi
Authors: Abe Niichiro 
Published: May 2011

AbstractAs an adult, Eustrongylides ignotus, recognized as a zoonotic parasite, is a parasitic nematode found in the gastrointestinal tract of fish-eating birds. As larvae, they are found in the connective tissue or body cavities of freshwater fish. In Japan, E. ignotus and E. tubifex have been found in three avian species, but their distribution in intermediate and paratenic hosts remains unclear. For this study, 16 commercial raw Japanese smelts, Hypomesus transpacificus nipponensis, were used for parasitological examination. A pinkish red worm collected from the abdominal wall of one smelt (6.3%) was identified as E. ignotus based on the high sequence similarity (99.9%) of the partial 18S ribosomal RNA gene and the morphology of its cephalic and caudal ends. Furthermore, a Raphidascaris-like nematode was found in the intestines of five smelts examined (31.3%) and was identified as R. gigi in view of the absence of lateral cuticular alae. Eustrongylides ignotus and R. gigi have been reported in various freshwater fish, but not in smelts. Therefore, this finding of E. ignotus and R. gigi in H. transpacificus nipponensis represents a new host record.
A new species of Demidospermus (Platyhelminthes, Monogenea, Ancyrocephalidae) from the catfish Parapimelodus valenciennis in Samborombón Bay, Argentina
Authors: Marcotegui Paula , Martorelli Sergio 
Published: May 2011

AbstractDemidospermus annulus sp. nov. (Platyhelminthes, Monogenea, Ancyrocephalidae) is described from the gills of the catfish Parapimelodus valenciennis Lütken collected in Samborombón Bay, Argentina. The new species differs from all congeneric species mainly by the structure of the accessory piece of the male copulatory organ, the sclerotized ring-shaped vaginal aperture and the dorsal bar articulation.
Model of the arc earth-fault for medium voltage networks
Authors: Marciniak Lubomir 
Published: May 2011

Abstract
In this paper the universal model of dynamic short-circuit arcs is presented for simulation of earth-fault in medium voltage networks. The model describes the entire arc short-circuit process: the ignition, the burning stage, the arc extinction and the increasing recovery voltage. Four alternative choices of the characteristics of the static arc are implemented and compared. Simulation results in medium voltage networks are described. Realistic current and voltage time dependencies are obtained.
Mitochondrial Assessment in Asymptomatic HIV-Infected Paediatric Patients on Haart
Authors: Morén Constanza , Noguera-Julian Antoni , Rovira Núria , Garrabou Glòria , Nicolàs Mireia , Cardellach Francesc , Martínez Esteban , Sánchez Emília , Miró Òscar , Fortuny Clàudia 
Published: May 2011

Background HAART can cause mitochondrial DNA (mtDNA) depletion, which may lead to mitochondrial dysfunction. We aimed to determine whether mtDNA and mitochondrial function abnormalities are present in peripheral blood mononuclear cells from asymptomatic HIV-infected children. Methods A cross-sectional study in peripheral blood mononuclear cells was performed in 47 asymptomatic (free from any HIV- or AIDS-related active condition or HAART-related toxicity), HIV-infected, HAART-treated children and adolescents and 27 uninfected healthy paediatric patients. We measured mtDNA and mitochondrial RNA (mtRNA) content by quantitative real-time PCR. Mitochondrial respiratory chain enzymatic activity of complex-IV (CIV) and mitochondrial mass (estimated by citrate synthase) were measured spectrophotometrically, and CIV protein subunit content was measured with western blot analysis. Results A reduction in mtDNA levels was observed in HIV-infected children compared with controls (mean ±sem 4.47 ±0.31 and 5.82 ±0.48, respectively; 23% depletion; P=0.018), whereas similar levels of mtRNA, CIV protein subunit content and enzymatic activity were found in the two groups. These findings remained unaltered after considering mitochondrial abundance. Among HIV-infected children, mtDNA levels did not correlate with viral load, CD4+ T-cell counts or lactataemia at the time of assessment. No differences were observed when current or past use of individual antiretroviral drugs or HAART regimens were taken into account. Conclusions Depletion in mtDNA from asymptomatic HIV-infected children did not lead to differences in mtRNA levels or mitochondrially-encoded CIV proteins, nor to CIV dysfunction. This may be explained by homeostatic-compensatory mechanisms at the transcription level or by the mild depletion we observed.
Tirage au sort et politique : de l'autogouvernement républicain à la démocratie délibérative
Authors: Sintomer Yves 
Published: May 2011

Résumé Quelles étaient les fonctions de l'usage politique du tirage au sort dans la République de Florence, et quels liens entretenait-il avec la délibération ? Pourquoi cette procédure est-elle de nouveau utilisée depuis quelques décennies dans de nombreux dispositifs délibératifs ? L'invention de l'échantillon représentatif marque une rupture entre les usages anciens et modernes du tirage au sort. Celui-ci, tout en conservant sa fonction d'impartialité, soutient désormais une logique de démocratie délibérative centrée sur des mini-publics contrefactuels, et non plus une logique d'autogouvernement républicain où chaque citoyen est tour à tour gouvernant et gouverné. Cette comparaison historique permet de mieux comprendre les expériences actuelles de démocratie délibérative et certains des défis auxquels elles sont confrontées.
Investigation psychanalytique sur le groupe borderline des névroses. Quelle thérapie engager ?
Authors: Stern Adolph 
Published: May 2011

Résumé Cette présentation tente de définir un groupe de pathologies que l’on peut qualifier de borderline . Certaines caractéristiques observées chez les patients de ce groupe les distinguent des psychonévrotiques habituels. La même technique psychanalytique qu’avec les psychonévrotiques peut être mise en œuvre avec ce groupe borderline ; toutefois, en dehors de s’intéresser aux perturbations des pulsions sexuelles et de les traiter, l’analyste doit ici également prêter attention aux blessures narcissiques et les traiter. Une grande part du fonctionnement du moi se trouve engagée dans la maladie. Cette caractéristique importante du groupe borderline rend le traitement plus difficile et le pronostic plus réservé qu’avec les psychonévrotiques.
Les cas limite. De la folie privée aux pulsions de destruction et de mort
Authors: Green André 
Published: May 2011

Résumé L’auteur s’efforce de retracer son évolution depuis La Folie privée jusqu’à Pourquoi les pulsions de destruction ou de mort ? Il rappelle les étapes de parcours. Le tableau clinique sur la psychose blanche (ouvrage en collaboration avec J.-L. Donnet) est rappelé. Par la suite, il faut considérer l’introduction par Freud des pulsions de destruction ou de mort (2007-2010). Enfin, certaines réflexions sont tirées d’ Illusions et désillusions du travail psychanalytique (2010). Une étude plus détaillée permet de retracer les débuts du dévelop pement psychique selon Freud. La réflexion se poursuit par la position de Freud sur le domaine privilégié des pulsions de destruction, à savoir la culture. Les rapports entre les premières tentatives et les dernières élaborations tentent de dessiner une certaine cohérence.
Sándor Ferenczi et la clinique des cas dits « difficiles »
Authors: Bokanowski Thierry 
Published: May 2011

Résumé Si l’on devait faire le bilan des apports très originaux proposés par S. Ferenczi tout au long de son œuvre, lesquels ont magistralement contribué à l’avancée de la psychanalyse, on peut affirmer qu’il a développé dans les dernières années de sa vie [1928-1933] une « pensée clinique » totalement novatrice, laquelle fait de lui aujourd’hui un véritable précurseur en ce qui concerne les nombreux aspects théorico-pratiques qui intéressent au quotidien le psychanalyste dans l’abord et les traitements des conjonctures hétérogènes et complexes, notamment celles des cas dits « limites ».
Les épisodes « limite » de l'Homme aux loups ; limites d'une névrose grave ou structure borderline ?
Authors: Khoury Maurice 
Published: May 2011

Résumé La névrose infantile de l’Homme aux loups n’a pu expliquer ses symptômes délirants, paranoïaques et hypocondriaques, à la veille de sa deuxième tranche d’analyse avec R. M. Brunswick. L’auteur reprend quelques points d’achoppements relatifs à la fin de la première cure par Freud – tout particulièrement la période postanalytique de cette cure – avec cependant un désaccord concernant une enfance borderline , comme l’affirment certains auteurs, et une organisation psychotique de l’âge adulte. Il s’agirait plutôt de défaillances dans le dénouement de la névrose de transfert et d’un retour dans le réel délirant d’une angoisse de castration jugulée dans son élaboration et sa liquidation par l’enlisement du « cas le plus célèbre » de l’histoire de la psychanalyse dans sa relation réelle avec Freud et dans celle du monde analytique.
Se rencontrer, se connaître, se séparer : la cure des états limite en hôpital de jour soins-études
Authors: Hagmann Valentine , Servant Benoît 
Published: May 2011

Résumé À partir de leur intérêt pour les états limite, lié aux questions cruciales que leur cure pose à la psychanalyse contemporaine, les auteurs développent la conception des soins qui sous-tend leur pratique dans un hôpital de jour soins-études. Celle-ci se décline en trois temps : « se rencontrer », qui met en jeu le difficile engagement de ces patients, et a amené à proposer un dispositif adapté ; « se connaître », dans lequel se déploie le travail en équipe pour transformer l’interaction en représentation et favoriser l’établissement d’une relation d’ alter ego ; « se séparer » enfin, dont l’heureuse issue sera fonction du développement conjoint d’une identification réciproque suffisante et d’une ouverture tierce.
« T'as dé pa bo safères ! » De l'opposition à la pensée, construire la négation
Authors: Joubert Martin 
Published: May 2011

Résumé Le jugement d’attribution, par lequel le psychisme fait équivaloir l’étranger et le mauvais s’avère, économiquement parlant, très efficace au point de persister au-delà de la mise en place du jugement d’existence. Quand Freud distingue les deux, en 1924, c’est aussi pour remarquer comment le jeu de la négation à ce point commande la mise en place des outils cognitifs. Un entretien avec une fillette de 8 ans, en difficulté dans ses apprentissages, nous permettra de mettre en perspective ces achoppements du développement avec les aléas du lien à l’objet primaire. Les enjeux narcissiques de ces dysharmonies cognitives de l’enfance tendent à les organiser ensuite, à l’âge adulte, du côté des états limite.