scholarly journals Motoneuron deafferentation and gliosis occur in association with neuromuscular regressive changes during ageing in mice

2020 ◽  
Vol 11 (6) ◽  
pp. 1628-1660 ◽  
Author(s):  
Alba Blasco ◽  
Sílvia Gras ◽  
Guillem Mòdol‐Caballero ◽  
Olga Tarabal ◽  
Anna Casanovas ◽  
...  
Keyword(s):  
Regressive Changes

Clear cell melanoma of the skin with regressive changes

1991 ◽  
Vol 18 (3) ◽  
pp. 276-277 ◽  
Author(s):  
J. MAČÁK ◽  
I. KRČ ◽  
M. ELLEDER ◽  
Z. LUKÁŠ
Keyword(s):  
Clear Cell ◽  
Regressive Changes

MORPHOFUNCTIONAL CHANGES IN RAT LUNGS UNDER THE INFLUENCE OF AFLATOXIN B1

2021 ◽  
Vol 55 (1 (254)) ◽  
pp. 85-90
Author(s):  
Anna F. Karapetyan ◽  
Anna V. Grigoryan ◽  
Gevorg A. Avagyan
Keyword(s):  
Mast Cells ◽  
Aflatoxin B1 ◽  
Pulmonary Insufficiency ◽  
Lung Cells ◽  
Rat Lungs ◽  
Regressive Changes

Morphofunctional changes in the lungs of rats under the influence of aflatoxin B1 were studied. The data obtained indicate that aflatoxicosis causes marked regressive changes due to pulmonary insufficiency, which are accompanied by massive destruction of lung cells, the presence of altered fields of view of emphysema, diffuse inflammatory foci, as well as an increase in the number of mast cells.

Regressive Changes

1997 ◽  
pp. 230-230
Author(s):  
Wolfgang Hach ◽  
Viola Hach-Wunderle
Keyword(s):  
Regressive Changes

scholarly journals Assessment of the Reproductive Health Status of Clarias Gariepinus (Burchell, 1822) in a River Impacted by Mercury from Clandestine Gold Mining: A Case Study of Bagoue River, Côte d’Ivoire

2020 ◽  
Vol 9 (1) ◽  
pp. 42
Author(s):  
Augustin KOUAME N’ Guessan ◽  
Rodrigue Orobiyi Edéya PELEBE ◽  
Koffi Charles BOUSSOU ◽  
Valentin N’DOUBA
Keyword(s):  
Reproductive Health ◽  
Gold Mining ◽  
Clarias Gariepinus ◽  
Reproductive Capacity ◽  
Histological Assessment ◽  
Circulatory Disturbance ◽  
Target Fish ◽  
Regressive Changes ◽  
Liver Tissues

Pollution of aquatic ecosystems often results in adverse environmental disturbances, including individual and/or sub-individual changes in fish. The aim of the present study was to examine possible reproductive health effects in male and female, based on a histological assessment of Clarias gariepinus sampled in Bagoue River impacted by mercury from the artisanal gold mining. Fish were collected between August 2018 and April 2019 during two seasons from four stations differently impacted. A histological assessment was done on three target fish organs (liver, ovary and testis). Water and sediment samples were analysed for total mercury (T-Hg) concentration. Histological alterations were semi-quantitatively assessed, and the results were classified according to the severity of the histological response identified. Microscopic assessment revealed alterations of the gonads and liver tissues. A higher incidence of reaction pattern (Regressive changes, Inflammation and Circulatory disturbance) was found in liver tissues than in gonads tissues (Regressive changes). T-Hg levels were higher upstream than downstream in ovaries and testis tissues. Paradoxically, the lesions observed in these organs were more pronounced downstream than those found in fish from upstream during rainy season. According to total index, the organs examined downstream suffered severe damage unlike upstream sites. Also, comparison of degree of alteration between testes and ovaries indicates a greater impact of ovarian structures especially on downstream sites. The effect of anthropogenic impact appears to be visible downstream as the concentration of chemical pollutants and exposure time determine the severity of the damage. Alterations in ovarian follicles, spermatogenic cells and liver tissues may reflect damage to the process of gametogenesis, which may reduce the reproductive capacity of individuals over the long term.

Nutrition

1937 ◽  
Vol 10 (3) ◽  
pp. 157-175
Keyword(s):  
Microscopic Examination ◽  
Gland Content ◽  
Regressive Changes

Examination of the Pituitary Membrane of the Throat in A avitamosis. Untersuchungen über die Histogenese der “Pusteln” der Schlundschleimhaut bei der Nährschädenerkrankung (A Avitaminose) der Hühner. L. Claussen. Deutsche Tierärtzliche Wochenschrift, Vol. 45, 1937, p. 161.Description of the microscopic examination of the typical changes in the pituitary membrane of the throat in A avitaminosis. The festerings are caused by regressive changes of the pituitary membrane glands. The epithelium and the dividing walls of the glands are destroyed, the gland content becomes full of congealed exudate and tissue remains and this mass is extruded in a cheese-like lump. Inflamn1atory processes are not present.

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