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Polyglucosan storage disease in a black-capped parrot (Pionitesmelanocephalus).
J Comp Pathol
December 2024
Joint Pathology Center, 606 Stephen Sitter Ave, Silver Spring, Maryland 20910, USA.
Following an episode of sudden lethargy, an 18-month-old female black-capped parrot (Pionites melanocephalus) died while being examined. On gross examination, there was fluid within the coelom, hepatomegaly with yellow colouration and the heart appeared enlarged with pallor throughout the myocardium. On histological examination, cardiomyocytes were swollen with loss of cross striations and contained 6-12-μm diameter intrasarcoplasmic pale grey inclusions of storage material.
View Article and Find Full Text PDFMetastasizing dysgerminoma in an inland bearded dragon (Pogona vitticeps).
BMC Vet Res
December 2024
Clinical Unit for Diagnostic Imaging, University of Veterinary Medicine, Vienna, Austria.
Background: Malignant dysgerminomas are infrequently reported ovarian neoplasms in animals, especially in exotic pets (non-traditional companion animals [NTCAs]). In the few published case reports on reptilian species, examples are primarily postmortem without antemortem (clinical) assessment.
Patient Presentation: An adult, 13-year-old, spayed female inland bearded dragon (Pogona vitticeps) presented with lethargy, a right-sided head tilt, unilateral exophthalmos and ventrotemporal strabismus on the right eye.
Excretory glands of sea spiders (Pycnogonida, Nymphonidae).
Arthropod Struct Dev
November 2024
Te Whatu Ora, National Public Health Service, 369 Taieri Road, 9010, Dunedin, New Zealand. Electronic address:
Article Synopsis
- All major arthropod groups have excretory glands believed to be an ancestral trait, but the presence of these organs in pycnogonids (a type of ancient aquatic chelicerate) was uncertain, particularly due to limited anatomical research.
- This study investigated four nymphonids using advanced microscopy techniques and found that all species possess distinct excretory organs, detailing their structure and various components.
- Additionally, the research traced the development of these organs, revealing their anatomical location in the appendages, and suggests that the structure of the sacculus may have evolved secondarily, though its exact classification compared to other arthropods remains ambiguous.
Mucinous adenocarcinoma in kidneys with developmental anomalies - a report of two cases.
BMC Urol
November 2024
Department of Urology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
Background: Primary mucinous adenocarcinomas of the kidney are rare and pose a challenge for preoperative diagnosis. The histogenesis of these tumours remains largely unknown, with three proposed theories: chronic irritation, differentiation of celomic epithelium, and kidney maldevelopment. Here, we present two cases of renal mucinous adenocarcinoma in patients with developmental renal anomalies, specifically a duplex collecting system and a horseshoe kidney.
View Article and Find Full Text PDFConservative character of the germ-line cyst organization within enchytraeids (Annelida: Clitellata) ovary - New proofs based on two Achaeta species.
Micron
January 2025
Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Bankowa 9, Katowice 40-007, Poland.
Article Synopsis
- The study focuses on the unique structure and development of unpaired ovaries in the genus Achaeta, a type of aquatic clitellate worm known as microdriles, which are small and found in various segments of their bodies.
- It describes the formation of germ-line cysts within the ovary that house developing oocytes and their nurse cells, which provide nutrients and support for the maturing oocyte.
- The findings suggest that despite some morphological differences, the ovary organization and oogenesis in Achaeta align with patterns observed in other enchytraeid species, indicating a shared evolutionary trait.
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