Immunocytochemical study of fibronectin in the sea lamprey, Petromyzon marinus, and the Atlantic hagfish, Myxine glutinosa

1986 ◽  
Vol 244 (3) ◽  
Author(s):  
GlendaM. Wright
Keyword(s):  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Immunocytochemical Study ◽  
Myxine Glutinosa

Glutamatergic neuronal populations in the forebrain of the sea lamprey, Petromyzon marinus: An in situ hybridization and immunocytochemical study

2011 ◽  
Vol 519 (9) ◽  
pp. 1712-1735 ◽  
Author(s):  
Verona Villar-Cerviño ◽  
Antón Barreiro-Iglesias ◽  
Sylvie Mazan ◽  
Maria Celina Rodicio ◽  
Ramón Anadón
Keyword(s):  
In Situ Hybridization ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Immunocytochemical Study ◽  
Neuronal Populations

Glutamatergic neuronal populations in the brainstem of the sea lamprey,Petromyzon marinus: An in situ hybridization and immunocytochemical study

2012 ◽  
Vol 521 (3) ◽  
pp. 522-557 ◽  
Author(s):  
Verona Villar-Cerviño ◽  
Antón Barreiro-Iglesias ◽  
Blanca Fernández-lópez ◽  
Sylvie Mazan ◽  
María Celina Rodicio ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Immunocytochemical Study ◽  
Neuronal Populations

RE-EXAMINATION OF THE PRESENCE OF CORTICOSTEROIDS IN TWO CYCLOSTOMES, THE ATLANTIC HAGFISH (MYXINE GLUTINOSA L.) AND THE SEA LAMPREY (PETROMYZON MARINUS L.)

1970 ◽  
Vol 46 (1) ◽  
pp. 29-43 ◽  
Author(s):  
M. WEISBART ◽  
D. R. IDLER
Keyword(s):  
Thin Layer ◽  
Sulphuric Acid ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Rigorous Proof ◽  
Myxine Glutinosa ◽  
High Concentrations ◽  
Double Isotope

SUMMARY Fluorescence analyses and observations of plasma extracts on thin-layer chromatoplates including sulphuric acid chromogens failed to indicate the high concentrations of cortisol and corticosterone in Atlantic hagfish and sea lamprey reported by other workers. Double isotope derivative assays of Atlantic hagfish plasma and sea lamprey plasma failed to provide rigorous proof of the presence of these steroids. Presumptive adrenocortical tissue from Atlantic hagfish and sea lamprey, incubated with radioactive steroids as precursors, failed to give any transformation to cortisol or corticosterone. However, sea lamprey incubations did produce 17α-hydroxyprogesterone from progesterone. No evidence was found for the presence of 17α-hydroxyprogesterone in microgram quantities in the plasma. These findings are discussed in relation to previous studies in which high concentrations of cortisol and corticosterone were reported.

Structure of the conus arteriosus and ventral aorta in the sea lamprey, Petromyzon marinus, and the Atlantic hagfish, Myxine glutinosa: microfibrils, a major component

1984 ◽  
Vol 62 (12) ◽  
pp. 2445-2456 ◽  
Author(s):  
Glenda M. Wright
Keyword(s):  
Extracellular Matrix ◽  
Connective Tissue ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Elastic Fibre ◽  
Electron Microscopic ◽  
Primitive Form ◽  
Myxine Glutinosa ◽  
Ventral Aorta ◽  
Adult Lamprey

Light and electron microscopic observations of the conus arteriosus (CA) and ventral aorta (VA) of the sea lamprey, Petromyzon marinus, and the Atlantic hagfish, Myxine glutinosa, reveal the presence of a unique form of fibrous extracellular matrix within their media and an unusual type of connective tissue forming the lateral subendothelial distensions found only in the lamprey CA. The extracellular matrix of the media in lamprey and hagfish CA and VA is characterized by large concentrations of tubular, elastic fibrelike microfibrils 11–17 nm in diameter. No elastic fibrelike elastin component could be found. Collagen fibrils, matrix granules, and intergranular filaments make up the remainder of the matrix. The loose connective tissue composing the lateral distensions of the larval and adult lamprey CA contains ultrastructural features similar to those of lamprey mucocartilage. It is speculated that since lampreys and hagfish are living representatives of the most primitive group of vertebrates, the microfibrils present in their major arteries may represent a primitive form of elastic fibre in which elastin has not yet developed. The functional significance of the extracellular microfibrils in the CA and VA of lamprey and hagfish and the occurrence of lateral distensions in the lamprey CA are discussed.

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