Sodium borohydride reduction of fluorescence as a specificity test for the histochemical demonstration of monoamines

1978 ◽  
Vol 10 (2) ◽  
pp. 247-250 ◽  
Author(s):  
P. H. Staple ◽  
J. L. Luborsky-Moore
Keyword(s):  
Sodium Borohydride ◽  
Histochemical Demonstration ◽  
Borohydride Reduction ◽  
Specificity Test ◽  
Sodium Borohydride Reduction

scholarly journals FLUORESCENCE METHODS FOR THE HISTOCHEMICAL DEMONSTRATION OF MONOAMINES. 3. SODIUM BOROHYDRIDE REDUCTION OF THE FLUORESCENT COMPOUNDS AS A SPECIFICITY TEST

1964 ◽  
Vol 12 (8) ◽  
pp. 582-586 ◽  
Author(s):  
HANS CORRODI ◽  
NILS-ÅKE HILLARP ◽  
GÖSTA JONSSON
Keyword(s):  
Sodium Borohydride ◽  
Histochemical Demonstration ◽  
Cellular Level ◽  
Specific Method ◽  
Tissue Sections ◽  
Specificity Test ◽  
Highly Sensitive ◽  
Formaldehyde Treatment ◽  
Sodium Borohydride Reduction ◽  
Fluorescent Compounds

It has been shown in previous papers that catecholamines and 5-hydroxytryptamine can under certain conditions be converted to highly fluorescent 6,7 - dihydroxy - 3,4 - dihydroisoquinolines and 6-hydroxy-3,4-dihydro-β-carboline respectively, and that this can be used as a highly sensitive and specific method for the histochemical demonstration of the monoamines at the cellular level. In the present paper it is shown that the fluorescent compounds are very readily reduced by sodium borohydride to the corresponding, non-fluorescent 1,2,3,4-tetrahydro-compounds—even if they are present in a non-extractable state in dried serum albumin spots or in tissue sections—and that the fluorescence can be regenerate by renewed formaldehyde treatment. The non-specific fluorescence ( e. g. autofluorescence) in tissue sections was never observed to undergo any changes on borohydride treatment. On the basis of these findings a very simple histochemical test has been worked out to check directly in the tissue section whether or not an observed fluorescence is due to the presence of the reacting monoamines.

1,2-Benzothiazines. II. The Preparation and Sodium Borohydride Reduction of 3-Acyl-2H-1,2-benzothiazin-4(3H)-one 1,1-Dioxides1

1965 ◽  
Vol 30 (7) ◽  
pp. 2241-2246 ◽  
Author(s):  
Harold Zinnes ◽  
Roger A. Comes ◽  
Francis R. Zuleski ◽  
Albert N. Caro ◽  
John Shavel
Keyword(s):  
Sodium Borohydride ◽  
Borohydride Reduction ◽  
Sodium Borohydride Reduction
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