Ovarian teratoma in an adult female <i>Zoogoneticus tequila</i> (Webb &amp; Miller 1998): histological and immunohistochemical features

Romanucci, Mariarita; Arbuatti, Alessio; Massimini, Marcella; Defourny, Sabrina Vanessa Patrizia; Salda, L. Della

doi:10.1111/jfd.12553

Cited by 5 publications

(6 citation statements)

References 10 publications

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“…In addition to guppies, teratomas were found in other species of viviparous fish: extragonadal teratoma on the ventral body wall in Xiphophorus hellerii (Hisaoka, 1963), ovarian teratomas in Heterandria formosa (Stolk, 1961), Xiphophorus maculatus (Stolk, 1959), and Zoogoneticus tequila (Romanucci et al., 2017). Teratomas in these four species, as in guppies, consisted of a complex variety of tissues with differences in the composition of the derivatives of the three germ layers and their distribution throughout the tumour, particularly adipose tissue, gut and glandular structures.…”

Section: Discussionmentioning

confidence: 99%

“…Teratomas in these four species, as in guppies, consisted of a complex variety of tissues with differences in the composition of the derivatives of the three germ layers and their distribution throughout the tumour, particularly adipose tissue, gut and glandular structures. Besides mature structures, teratomas of viviparous fish may contain poorly differentiated elements (Romanucci et al., 2017). The presence of melanomacrophages in the tumour and organs of P. wingei , as well as in the tumour of Z. tequila (Romanucci et al., 2017), may indicate various non‐immunological processes, given that melanomacrophage centres perform many functions in fish (Agius & Roberts, 2003; Steinel & Bolnick, 2017; Wolke, 1992).…”

Section: Discussionmentioning

confidence: 99%

“…Teratomas in fish are rare tumours mainly reported in viviparous fish (Hisaoka, 1963; Romanucci et al., 2017; Stolk, 1961). To date, cases of guppy teratomas have been described in Poecilia reticulata (Hisaoka, 1961; Rahmati‐Holasoo et al., 2014; Stolk, 1959), while in another closely related species, Poecilia wingei , data on these tumours remain limited (Arbuatti et al., 2011).…”

Section: Introductionmentioning

confidence: 99%

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Investigation of extragonadal teratomas in two Poecilia wingei

Prazdnikov,

Kondakova

2024

Journal of Fish Diseases

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Teratoma is a rare tumour in fish consisting of tissues from more than one germ layer, that may be located in either the gonads or extragonadal sites. Teratomas in many fish species remain poorly understood. In this work, we performed the first histological examinations of extragonadal teratomas in Poecilia wingei and also examined the influence of a large teratoma on male sexual activity. The studied teratomas shared general organizational features, but they also had variations in both external and internal features. In teratomas, the most common and highly differentiated tissues were striated muscle and nervous tissue. Despite the tumour, the male P. wingei exhibited normal mating behaviour and retained the ability for successful copulation. The structural features of extragonadal teratomas in guppy fish indicate a possible connection between these tumours and a failure of conserved processes operating in the embryonic germline.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of extragonadal teratomas in two Poecilia wingei

Prazdnikov,

Kondakova

2024

Journal of Fish Diseases

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“…They arise from totipotential cells and, therefore, are found mainly in the gonads, even if, on rare occasions, they are found in remnants of primitive cells abducted elsewhere. These totipotential cells differentiate themselves along several germinal pathways, producing, for example, tissues that can be identified as skin, muscle, fat, dental structures and, in fact, any body tissue [46][47][48].…”

Section: Inmentioning

confidence: 99%

Neoplasias in Fish: Review of the Last 20 Years. A Look from the Pathology

Romano

Pedrosa

2020

ARRB

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In fish there is an innumerable variety of neoplasias that arise essentially from all cell types. Neolasia here, we will focus on the neoplasias that appear spontaneously in these animals and will not cover the experimentally induced neoplasias and/or the animal models of neoplasias. As for diagnosis, in general, specialists in aquatic organism pathology are not so familiar with the diagnosis of neoplasias. Infectious pathology, as opposed to non-infectious pathology, is the predominant condition in this area and, of course, these are of greater importance because some infectious diseases generate great economic losses, while neoplasias are isolated pathologies, with some exceptions. In the last 20 years, 10 neoplasias in different species have been diagnosed in our laboratory, and we reported their characteristics in this paper. We also made a detailed bibliography review and observed how 90 neoplasias among 56 species of teleosteal fish were reported. Neoplasias in fish, unlike other diseases, do not generate great losses to aquaculture. However, the true value of neoplastic pathology compared is to better understand the histiogenesis and biological behavior of neoplasias in mammals and humans. Carcinogenesis is generally complex and in most neoplasias in both mammals and fish, the origin is unknown, and it seems that there are many factors that contribute to the onset and growth of neoplasias.

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“…The Mexican goodeid, Zoogoneticus tequila (Webb and Miller, 1998) (Z. tequila) is considered a nearly extinct fish in the wild and it is maintained in captivity by the non-profit international "Goodeid Working Group" represented by zoological institutions and aquarists in North America, Mexico and Europe [7]. The unique, currently existing Italian colony was founded in 2007 by one of the authors and a limited number of pathologies has been recorded so far within this colony [8,9]. Z. tequila is a viviparous species and females give birth to free-swimming fry after an intraovarian gestation.…”

Section: Introductionmentioning

confidence: 99%