Evidence for metabolic imbalance of vitamin A2 in wild fish chronically exposed to metals

The resorptive effects of 0.01 M cerium nanodioxide sol upon single intraperitoneal administration to rats have been studied. The acute exposure to nanoparticles was found to have a dose-dependent general toxic effect on the body (weight loss, inflammatory changes in the abdominal organs, modification of individual behavior, hematological changes, metabolic imbalance), which develops on the background of POL activation. The prooxidant effect of cerium dioxide nanoparticles is demonstratively manifested at relatively high exposure levels (80–8 mg / kg). The threshold dose for the general toxic effect (Limch integr) is equal to 0.8 mg / kg.

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Distribution and risk assessment of hexachlorobutadiene, pentachloroanisole, and chlorobenzenes in sediment and wild fish from a region affected by industrial and agricultural activities in South China

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2021.126002 ◽

2021 ◽

pp. 126002

Author(s):

Yan Lu ◽

Zhi-Feng Chen ◽

Yi-Jie Chen ◽

Ying-Zao Xu ◽

Yanyan Chen ◽

...

Keyword(s):

Risk Assessment ◽

South China ◽

Wild Fish ◽

Agricultural Activities

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Corrigendum to “Tissue contaminants and wild fish health in the St. Clair River Area of Concern – Part 2: Spatial trends and temporal declines in organics” [Sci. Total Environ. 746 (2020) 136525/https://doi.org/10.1016/j.scitotenv.2020.136525]

The Science of The Total Environment ◽

10.1016/j.scitotenv.2021.146817 ◽

2021 ◽

pp. 146817

Author(s):

A.F. Muttray ◽

D.C.G. Muir ◽

G.R. Tetreault ◽

M.E. McMaster ◽

J.P. Sherry

Keyword(s):

Wild Fish ◽

Fish Health ◽

Spatial Trends ◽

Area Of Concern

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THE REPLACEMENT OF VITAMIN A1 BY VITAMIN A2 IN THE RETINA OF THE RAT

Journal of Biological Chemistry ◽

10.1016/s0021-9258(17)41326-3 ◽

1946 ◽

Vol 163 (2) ◽

pp. 455-464 ◽

Cited By ~ 1

Author(s):

Edgar M. Shantz ◽

Norris D. Embree ◽

Harold Carpenter Hodge ◽

J.H. Wills

Keyword(s):

Vitamin A2

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Natural mortality from poor condition in Atlantic cod (Gadus morhua)

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f00-023 ◽

2000 ◽

Vol 57 (4) ◽

pp. 826-836 ◽

Cited By ~ 96

Author(s):

Jean-Denis Dutil ◽

Yvan Lambert

Keyword(s):

Gadus Morhua ◽

Atlantic Cod ◽

Negative Impact ◽

Fish Muscle ◽

Early Summer ◽

Wild Fish ◽

Natural Mortality ◽

Muscle Lactate ◽

Lactate Dehydrogenase Activity ◽

Poor Condition

The extent of energy depletion was assessed in Atlantic cod (Gadus morhua) in spring and early summer (1993-1995) to assess relationships between poor condition and natural mortality. Several indices of condition were compared in wild fish in the northern Gulf of St. Lawrence and in fish exposed to a prolonged period of starvation in laboratory experiments. Discriminant analyses classified only a small fraction of the wild fish as similar to cod that did not survive and a much larger fraction as similar to cod that survived starvation. This percentage increased from April to May and peaked in June 1993 and 1994. Condition factor and muscle somatic index allowed a clear distinction between live and dead fish. Muscle lactate dehydrogenase activity suggested that cod had experienced a period of negative growth early in 1993, 1994, and 1995. Fish classified as similar to starved individuals were characterized by a higher gonad to liver mass ratio than others. Reproduction may have a negative impact on survival not only in spring but also later into summer, as some individuals were found not to have recovered by late summer. This study shows that natural mortality from poor condition contributed to lower production in the early 1990s.

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