The status of parenchymatous organs of the Caspian seal Phoca caspica under the conditions of toxicant accumulation
The toxicological study conducted revealed high concentrations of hydrocarbons and highly toxic heavy metals in the liver and subcutaneous fat of the Caspian seal. The increased toxicant level in the fat, as compared to the liver, pointed to the disorder of organism purification processes, leading t...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Sciendo
2018-09-01
|
Series: | Ekológia (Bratislava) |
Subjects: | |
Online Access: | https://doi.org/10.2478/eko-2018-0019 |
id |
doaj-44b1d8d913364691ba46668d10cd036f |
---|---|
record_format |
Article |
spelling |
doaj-44b1d8d913364691ba46668d10cd036f2021-09-05T21:00:47ZengSciendoEkológia (Bratislava)1337-947X2018-09-0137323024210.2478/eko-2018-0019eko-2018-0019The status of parenchymatous organs of the Caspian seal Phoca caspica under the conditions of toxicant accumulationVolodina Viktoria0Karygina Natalia1Popova Olga2Popova Elmira3Grushko Mariia4Fedorova Nadezhda5FSBSI Caspian Research Institute for Fisheries (FSBSI “KaspNIRKh”), Savushkina 1, 414056Astrakhan, Russian Federation;FSBSI Caspian Research Institute for Fisheries (FSBSI “KaspNIRKh”), Savushkina 1, 414056Astrakhan, Russian Federation;FSBSI Caspian Research Institute for Fisheries (FSBSI “KaspNIRKh”), Savushkina 1, 414056Astrakhan, Russian Federation;FSBSI Caspian Research Institute for Fisheries (FSBSI “KaspNIRKh”), Savushkina 1, 414056Astrakhan, Russian Federation;Astrakhan State Technical University (FSBEI HE “ASTU”) Tatishcheva 16, 414056Astrakhan, Russian Federation;Astrakhan State Technical University (FSBEI HE “ASTU”) Tatishcheva 16, 414056Astrakhan, Russian Federation;The toxicological study conducted revealed high concentrations of hydrocarbons and highly toxic heavy metals in the liver and subcutaneous fat of the Caspian seal. The increased toxicant level in the fat, as compared to the liver, pointed to the disorder of organism purification processes, leading to chronic polytoxicosis and disorders of the histological structure of the internals. The studies of the morphofunctional state of the stomach of the Caspian pinnipeds revealed the following disorders: hemorrhages, edemata and necrosis of the mucous membrane, and replacement of glandular tissue with the connective tissue. The study of the small intestine of the seals identified the symptoms of catarrhal desquamatory enteritis. Epithelium dystrophy and desquamation were noted, in particular at the tops of the villi. Different types of colitis (acute, ulcerative, chronic) were found in the large intestine of the seals. Dystrophic and necrotic changes of hepatocytes were identified in the liver tissue, which pointed to the liver cell failure. The nature and extent of pathological changes in the internals and tissues of the studied animals point to the functional depression of the digestive system.https://doi.org/10.2478/eko-2018-0019caspian seal phoca caspicahydrocarbonsheavy metalsdisordersnegative effectcaspian sea |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Volodina Viktoria Karygina Natalia Popova Olga Popova Elmira Grushko Mariia Fedorova Nadezhda |
spellingShingle |
Volodina Viktoria Karygina Natalia Popova Olga Popova Elmira Grushko Mariia Fedorova Nadezhda The status of parenchymatous organs of the Caspian seal Phoca caspica under the conditions of toxicant accumulation Ekológia (Bratislava) caspian seal phoca caspica hydrocarbons heavy metals disorders negative effect caspian sea |
author_facet |
Volodina Viktoria Karygina Natalia Popova Olga Popova Elmira Grushko Mariia Fedorova Nadezhda |
author_sort |
Volodina Viktoria |
title |
The status of parenchymatous organs of the Caspian seal Phoca caspica under the conditions of toxicant accumulation |
title_short |
The status of parenchymatous organs of the Caspian seal Phoca caspica under the conditions of toxicant accumulation |
title_full |
The status of parenchymatous organs of the Caspian seal Phoca caspica under the conditions of toxicant accumulation |
title_fullStr |
The status of parenchymatous organs of the Caspian seal Phoca caspica under the conditions of toxicant accumulation |
title_full_unstemmed |
The status of parenchymatous organs of the Caspian seal Phoca caspica under the conditions of toxicant accumulation |
title_sort |
status of parenchymatous organs of the caspian seal phoca caspica under the conditions of toxicant accumulation |
publisher |
Sciendo |
series |
Ekológia (Bratislava) |
issn |
1337-947X |
publishDate |
2018-09-01 |
description |
The toxicological study conducted revealed high concentrations of hydrocarbons and highly toxic heavy metals in the liver and subcutaneous fat of the Caspian seal. The increased toxicant level in the fat, as compared to the liver, pointed to the disorder of organism purification processes, leading to chronic polytoxicosis and disorders of the histological structure of the internals. The studies of the morphofunctional state of the stomach of the Caspian pinnipeds revealed the following disorders: hemorrhages, edemata and necrosis of the mucous membrane, and replacement of glandular tissue with the connective tissue. The study of the small intestine of the seals identified the symptoms of catarrhal desquamatory enteritis. Epithelium dystrophy and desquamation were noted, in particular at the tops of the villi. Different types of colitis (acute, ulcerative, chronic) were found in the large intestine of the seals. Dystrophic and necrotic changes of hepatocytes were identified in the liver tissue, which pointed to the liver cell failure. The nature and extent of pathological changes in the internals and tissues of the studied animals point to the functional depression of the digestive system. |
topic |
caspian seal phoca caspica hydrocarbons heavy metals disorders negative effect caspian sea |
url |
https://doi.org/10.2478/eko-2018-0019 |
work_keys_str_mv |
AT volodinaviktoria thestatusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation AT karyginanatalia thestatusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation AT popovaolga thestatusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation AT popovaelmira thestatusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation AT grushkomariia thestatusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation AT fedorovanadezhda thestatusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation AT volodinaviktoria statusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation AT karyginanatalia statusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation AT popovaolga statusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation AT popovaelmira statusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation AT grushkomariia statusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation AT fedorovanadezhda statusofparenchymatousorgansofthecaspiansealphocacaspicaundertheconditionsoftoxicantaccumulation |
_version_ |
1717782255230779392 |