Corpuscle of Stannius: Difference between revisions
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[[File:Corpuscle of Stannius.jpg|thumb|right| Corpuscles of Stannius (two white spots encircled in blue) embedded in the kidney of ''[[Notopterus notopterus]]'' (top). Isolated corpuscles (middle). Section of a corpuscle (x 1200) showing secretory cells inside the lobules (bottom)]] |
[[File:Corpuscle of Stannius.jpg|thumb|right| Corpuscles of Stannius (two white spots encircled in blue) embedded in the kidney of ''[[Notopterus notopterus]]'' (top). Isolated corpuscles (middle). Section of a corpuscle (x 1200) showing secretory cells inside the lobules (bottom)]] |
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The '''corpuscles of Stannius''' are special [[Endocrine system|endocrine organs]] in the kidney in fish and are responsible for maintaining [[Calcium metabolism|calcium balance]]. They are found only in [[Osteichthyes|bony fishes]].<ref>{{cite web|title=Corpuscles of Stannius|url=http://www.britannica.com/science/corpuscles-of-Stannius|website=Encyclopædia Britannica|publisher=Encyclopædia Britannica, Inc.|accessdate=27 October 2015}}</ref> They were discovered and described by a German anatomist [[Hermann Friedrich Stannius]] in 1839. Stannius considered them as functionally similar to [[Adrenal gland|adrenal glands]] in mammals. But they are later found to be anatomically different as they are derived from different tissues of the embryo.<ref>{{cite journal|last1=Nadkarni|first1=V. B.|last2=Gorbman|first2=Aubrey|title=Structure of the corpuscle of Stannius in normal and radiothyroidectomized chinook fingerlings and spawning Pacific salmon|journal=Acta Zoologica|year=1966|volume=47|issue=1-2|pages=61–66|doi=10.1111/j.1463-6395.1966.tb00741.x}}</ref> Structurally the corpuscles are a large number of spherical bodies separated from each other by loose [[Connective tissue|connective tissues]]. Each body or lobule is in turn composed of several columnar cells, which contain secretory granules and are, thus, secretory in function. Each Secretory granule is spherical in shape and measures 0.5 to 1 μm in diameter.<ref>{{cite journal|last1=Ahmad|first1=M. Firoz|last2=Alim|first2=A.|last3=Sen|first3=N. S.|last4=Lakra|first4=G.|last5=Mishra|first5=K. P.|last6=Raza|first6=Bushra|last7=Chakarborty|first7=B.|last8=Rao|first8=N. V. A.|last9=Bonga|first9=S. E. Wendelaar|title=Electron microscopic studies of the corpuscles of Stannius of an airbreathing teleost (''Heteropneustes Fossilis'')|journal=Journal of Biosciences|year=2002|volume=27|issue=5|pages=509–513|doi=10.1007/BF02705048}}</ref> Their possible endocrine nature, i.e. producing hormone, was suspected from the complete anatomical description,<ref>{{cite journal|last1=Fujita|first1=Hisao|last2=Honma|first2=Yoshiharu|title=On the fine structure of corpuscles of Stannius of the eel, Anguilla japonica|journal=Zeitschrift fϋr Zellforschung und Mikroskopische Anatomie|year=1967|volume=77|issue=2|pages=175–187|doi=10.1007/BF00340787}}</ref> and it was believed to be responsible for regulating calcium level in the blood. The calcium regulating hormone was identified as [[stanniocalcin]].<ref name=suzuki>{{cite book|last1=Suzuki|first1=Nobuo|editor1-last=Takei|editor1-first=Yoshio|editor2-last=Ando|editor2-first=Hironori|editor3-last=Tsutsui|editor3-first=Kazuyoshi|title=Handbook of Hormones: Comparative Endocrinology for Basic and Clinical Research|year=2015|publisher=Academic Press|location=Oxford (UK)|isbn=978-0-12-801067-9|pages=247-249|url=https://books.google.co.in/books?id=zuWcBAAAQBAJ&dq|chapter=Stanniocalcin}}</ref> |
The '''corpuscles of Stannius''' are special [[Endocrine system|endocrine organs]] in the kidney in fish and are responsible for maintaining [[Calcium metabolism|calcium balance]]. They are found only in [[Osteichthyes|bony fishes]].<ref>{{cite web|title=Corpuscles of Stannius|url=http://www.britannica.com/science/corpuscles-of-Stannius|website=Encyclopædia Britannica|publisher=Encyclopædia Britannica, Inc.|accessdate=27 October 2015}}</ref> They were discovered and described by a German anatomist [[Hermann Friedrich Stannius]] in 1839. Stannius considered them as functionally similar to [[Adrenal gland|adrenal glands]] in mammals. But they are later found to be anatomically different as they are derived from different tissues of the embryo.<ref>{{cite journal|last1=Nadkarni|first1=V. B.|last2=Gorbman|first2=Aubrey|title=Structure of the corpuscle of Stannius in normal and radiothyroidectomized chinook fingerlings and spawning Pacific salmon|journal=Acta Zoologica|year=1966|volume=47|issue=1-2|pages=61–66|doi=10.1111/j.1463-6395.1966.tb00741.x}}</ref> Structurally the corpuscles are a large number of spherical bodies separated from each other by loose [[Connective tissue|connective tissues]]. Each body or lobule is in turn composed of several columnar cells, which contain secretory granules and are, thus, secretory in function. Each Secretory granule is spherical in shape and measures 0.5 to 1 μm in diameter.<ref>{{cite journal|last1=Ahmad|first1=M. Firoz|last2=Alim|first2=A.|last3=Sen|first3=N. S.|last4=Lakra|first4=G.|last5=Mishra|first5=K. P.|last6=Raza|first6=Bushra|last7=Chakarborty|first7=B.|last8=Rao|first8=N. V. A.|last9=Bonga|first9=S. E. Wendelaar|title=Electron microscopic studies of the corpuscles of Stannius of an airbreathing teleost (''Heteropneustes Fossilis'')|journal=Journal of Biosciences|year=2002|volume=27|issue=5|pages=509–513|doi=10.1007/BF02705048}}</ref> Their possible endocrine nature, i.e. producing hormone, was suspected from the complete anatomical description,<ref>{{cite journal|last1=Fujita|first1=Hisao|last2=Honma|first2=Yoshiharu|title=On the fine structure of corpuscles of Stannius of the eel, Anguilla japonica|journal=Zeitschrift fϋr Zellforschung und Mikroskopische Anatomie|year=1967|volume=77|issue=2|pages=175–187|doi=10.1007/BF00340787}}</ref> and it was believed to be responsible for regulating calcium level in the blood. The calcium regulating hormone was identified as [[stanniocalcin]].<ref name=suzuki>{{cite book|last1=Suzuki|first1=Nobuo|editor1-last=Takei|editor1-first=Yoshio|editor2-last=Ando|editor2-first=Hironori|editor3-last=Tsutsui|editor3-first=Kazuyoshi|title=Handbook of Hormones: Comparative Endocrinology for Basic and Clinical Research|year=2015|publisher=Academic Press|location=Oxford (UK)|isbn=978-0-12-801067-9|pages=247-249|url=https://books.google.co.in/books?id=zuWcBAAAQBAJ&dq|chapter=Stanniocalcin}}</ref> |
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==Structure== |
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The corpuscles of Stannius are small bodies embedded inside the kidney. They are spherical in shape and whitish in colour. In primitive bony fishes, such as the bowfin and garpike, they are extremely small and are distributed throughout the kidney. In some species (such as ''Oncostymchus Tshawytstha'' and ''O. Kisutch'') there are 5-6 corpuscles. The number of vary from 4-10 in ''Salnio solar'', and 6-8 in ''Salmo trutta''. But in higher bony fishes, they are larger, occurring in a pair, and lies toward the posterior end of the kidney. The exact location differs from species to species, and is an anatomical diagnosis in taxonomy. Each pair measures about 0.5 to 2 mm in diameter. Each is enclosed in a fibrous capsule (and is called a lobe or lobule), which is surrounded by a layer of connective tissue. Inside the corpuscles are stacks of secretory cells which are arranged in strands.<ref>{{cite journal|last1=Bedjargi|first1=P.R.C.|last2=Bedjargi|first2=N.P.|last3=Kulkarni|first3=R.S.|title=Morphology of corpuscles of Stannius in the fresh water fish, ''Notopterus notopterus''|journal=International Journal of Scientific Research|date=2014|volume=3|issue=2|pages=384-386|doi=10.15373/22778179|url=http://worldwidejournals.com/ijsr/articles.php?val=MjgyNg==&b1=641&k=161}}</ref> |
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==References== |
==References== |
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Revision as of 05:53, 27 October 2015
The corpuscles of Stannius are special endocrine organs in the kidney in fish and are responsible for maintaining calcium balance. They are found only in bony fishes.[1] They were discovered and described by a German anatomist Hermann Friedrich Stannius in 1839. Stannius considered them as functionally similar to adrenal glands in mammals. But they are later found to be anatomically different as they are derived from different tissues of the embryo.[2] Structurally the corpuscles are a large number of spherical bodies separated from each other by loose connective tissues. Each body or lobule is in turn composed of several columnar cells, which contain secretory granules and are, thus, secretory in function. Each Secretory granule is spherical in shape and measures 0.5 to 1 μm in diameter.[3] Their possible endocrine nature, i.e. producing hormone, was suspected from the complete anatomical description,[4] and it was believed to be responsible for regulating calcium level in the blood. The calcium regulating hormone was identified as stanniocalcin.[5]
Structure
The corpuscles of Stannius are small bodies embedded inside the kidney. They are spherical in shape and whitish in colour. In primitive bony fishes, such as the bowfin and garpike, they are extremely small and are distributed throughout the kidney. In some species (such as Oncostymchus Tshawytstha and O. Kisutch) there are 5-6 corpuscles. The number of vary from 4-10 in Salnio solar, and 6-8 in Salmo trutta. But in higher bony fishes, they are larger, occurring in a pair, and lies toward the posterior end of the kidney. The exact location differs from species to species, and is an anatomical diagnosis in taxonomy. Each pair measures about 0.5 to 2 mm in diameter. Each is enclosed in a fibrous capsule (and is called a lobe or lobule), which is surrounded by a layer of connective tissue. Inside the corpuscles are stacks of secretory cells which are arranged in strands.[6]
References
- ^ "Corpuscles of Stannius". Encyclopædia Britannica. Encyclopædia Britannica, Inc. Retrieved 27 October 2015.
- ^ Nadkarni, V. B.; Gorbman, Aubrey (1966). "Structure of the corpuscle of Stannius in normal and radiothyroidectomized chinook fingerlings and spawning Pacific salmon". Acta Zoologica. 47 (1–2): 61–66. doi:10.1111/j.1463-6395.1966.tb00741.x.
- ^ Ahmad, M. Firoz; Alim, A.; Sen, N. S.; Lakra, G.; Mishra, K. P.; Raza, Bushra; Chakarborty, B.; Rao, N. V. A.; Bonga, S. E. Wendelaar (2002). "Electron microscopic studies of the corpuscles of Stannius of an airbreathing teleost (Heteropneustes Fossilis)". Journal of Biosciences. 27 (5): 509–513. doi:10.1007/BF02705048.
- ^ Fujita, Hisao; Honma, Yoshiharu (1967). "On the fine structure of corpuscles of Stannius of the eel, Anguilla japonica". Zeitschrift fϋr Zellforschung und Mikroskopische Anatomie. 77 (2): 175–187. doi:10.1007/BF00340787.
- ^ Suzuki, Nobuo (2015). "Stanniocalcin". In Takei, Yoshio; Ando, Hironori; Tsutsui, Kazuyoshi (eds.). Handbook of Hormones: Comparative Endocrinology for Basic and Clinical Research. Oxford (UK): Academic Press. pp. 247–249. ISBN 978-0-12-801067-9.
- ^ Bedjargi, P.R.C.; Bedjargi, N.P.; Kulkarni, R.S. (2014). "Morphology of corpuscles of Stannius in the fresh water fish, Notopterus notopterus". International Journal of Scientific Research. 3 (2): 384–386. doi:10.15373/22778179.