1,720,975 research outputs found
Human sparganosis in Italy - Case report and review of the European cases
No full textInfections with Spargana, the larvae of Spirometra spp., are rarely found in humans in Europe. So far only six cases have been discussed in the literature, four from Italy and two from France. We here report a new case in a 50-year-old workman, a freshwater sports fisherman from Bologna in Northern Italy. The infection manifested as a subcutaneous nodule in the thigh, 2 X 3 cm in size, slightly painful when compressed, somewhat mobile under the skin, present for 9 months, with recurrent periods of local itchiness associated with redness and slight oedema. The lump was removed surgically Histological sections of the biopsied material revealed the presence of a sparganum. Drinking water contaminated by copepods, containing procercoid larvae of this parasite, seems to be the medium of infection
Rilievi istopatologici in corso di infezione spontanea da Enteromyxum leei in sarago pizzuto (Diplodus puntazzo, Cetti 1777).
No full textEnteromyxum leei è un parassita intestinale responsabile di severi episodi di malattia in sarago
pizzuto (Diplodus puntazzo). Questo mixosporidio ha determinato una notevole riduzione dell’allevamento di
questa specie mediterranea, che rappresentava una valida alternativa zootecnica per la diversificazione della
produzione in maricoltura. In quest’ottica, recentemente è stato ultimato un progetto per studiare i fattori limitanti
la produzione del sarago pizzuto, con particolare riferimento alle epizoozie causate da questo mixosporidio. Tra
le finalità del progetto era compresa la descrizione dei quadri anatomopatologici enterici, con la descrizione
dettagliata delle diverse enteriti, osservate durante infezioni spontanee da E. leei in sarago pizzuto, verificatesi in
due allevamenti italiani (A e B, rispettivamente sud e nord Italia). A ogni campionamento (7 in totale), 10
soggetti sono stati sacrificati tramite dose letale di anestetico e, durante la necroscopia, sono stati prelevati
porzioni di organi viscerali, rene, cuore e branchie. In particolare dal tratto gastroenterico, isolato dal resto degli
organi viscerali, sono stati prelevati la porzione pilorica dello stomaco e tratti di intestino corrispondenti al 5, 50 e
95% della lunghezza totale. I campioni sono stati fissati in formaldeide tamponata al 4% o in soluzione di Bouin e
processati secondo le comuni tecniche istologiche. Sezioni seriali in paraffina sono state colorate con
ematossilina-eosina e, alternativamente, caratterizzate istochimicamente. Allo scopo di standardizzare
l’interpretazione dei preparati e confrontare i campioni è stato messo a punto un sistema di valutazione a
parametri punteggiati. I quadri infiammatori prevalenti erano enterite proliferativa e enterite diffusa linfocitaria
cronica
Sciaenacotyle panceri (Monogenea, Microcotylidae), un possibile fattore limitante per l’allevamento in gabbia dell’ombrina boccadoro (Argyrosomus regius) nel Mar Mediterraneo
No full textAdditional description of a new species of Tunga (Siphonaptera) from Ecuador
Full text linkA new species of chigoe flea belonging to the genus Tunga jarocki, 1838 (Siphonaptera, Pulicidae, Tunginae), Tungo trimamillata, was recently described by Pampiglione et al. (2002). A better description and more details of the epidemiology of the flea are now presented. It is a species found in goats, pigs and cattle in Santa Isabel in Andean Ecuador. This new species differs from its most similar congener, Tunga penetrans (L., 1758), by several features, the most important of which are a) the presence on the anterior extremity of the gravid female of three rounded humps surrounding the head and thorax (which, however, are not visible if viewed in profile), b) slightly larger dimensions and C) the length of the first segment of the maxillary palpi which is longer than each of the other three
On a new species of sand flea from Ecuador and tungiasis, a problem of Public Health in many developing countries].
No full textThe authors recently described a new species of sand flea (genus Tunga) occurred in goat, sheep, cow, pig and man, in the Andean village of S.ta Isabel (Ecuador) and named Tunga trimamillata. Its most important morphological characteristics are: slightly larger dimensions than T. penetrans, both in male and female; presence on the anterior extremity of gravid female of three rounded humps surrounding head and thorax; length of the first segment of maxillary palpi which is longer than each of the other three. The importance of this parasite is due to the fact that it can cause the same damages as T. penetrans both in humans and domestic animals, with conseguent walking difficulties and local or generalized infections. For breeders, economic losses can be remarkable. Tungiasis is a serious problem of Public Health in many countries of Latin America and Subsaharian Africa, and it can be considered in these localities as an indicator of underdevelopment and poor hygiene conditions
First report of Sciaenocotyle panceri (Monogenea: Microcotylidae) on cage reared meagre Argyrosomus regius (Osteychthyes: Sciaenidae) in the western Mediterranean
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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