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Literature DB >> 4206241

Superiority of simplified assay for folate with Lactobacillus casei ATCC 7469 over assay with chloramphenicol-adapted strain.

Abstract

Direct assay of serum folate by mixing serum with a mixture of L. casei and medium without autoclaving was found to provide serum folate results similar to those by extraction of serum with heat. This procedure was found more reliable than that using the same technique with chloramphenicol and a strain of L. casei adapted to grow in this material. A portion of apparent folate activity assayed in haemolysates by such direct assay was found to be due to material other than folate. It is recommended that heat extraction of haemolysates be continued for determination of whole blood folate, or that an additional standardization of technique be included if direct assay is used.

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Year: 1973 PMID： 4206241 PMCID： PMC477938 DOI： 10.1136/jcp.26.12.963

Source DB: PubMed Journal: J Clin Pathol ISSN： 0021-9746 Impact factor: 3.411

9 in total

1. A microbiologic method for detecting folic acid deficiency in man.

Authors: H BAKER; V HERBERT; O FRANK; I PASHER; S H HUTNER; L R WASSERMAN; H SOBOTKA
Journal: Clin Chem Date: 1959-08 Impact factor: 8.327

2. A comparison of serum folate estimations using two different methods.

Authors: J D O'Broin; J M Scott; I J Temperley
Journal: J Clin Pathol Date: 1973-01 Impact factor: 3.411

3. Experience with microbiological assay for folate using a chloramphenicol-resistant L. casei strain.

Authors: I Chanarin; R Kyle; J Stacey
Journal: J Clin Pathol Date: 1972-12 Impact factor: 3.411

4. Radioisotopic assay for measurement of serum folate levels.

Authors: S Waxman; C Schreiber; V Herbert
Journal: Blood Date: 1971-08 Impact factor: 22.113

5. Automation of the assay of folate in serum and whole blood.

Authors: L Millbank; R E Davis; M Rawlins; A H Waters
Journal: J Clin Pathol Date: 1970-02 Impact factor: 3.411

6. An automated method for the measurement of folate activity.

Authors: R E Davis; D J Nicol; A Kelly
Journal: J Clin Pathol Date: 1970-02 Impact factor: 3.411

7. Effect of incubation time on the L. casei bioassay of folic acid in serum.

Authors: A M Streeter; B J O'Neill
Journal: Blood Date: 1969-08 Impact factor: 22.113

8. Studies of (3H)folic acid uptake by Lactobacillus casei.

Authors: B A Cooper
Journal: Biochim Biophys Acta Date: 1970-04-14

9. Aseptic addition method for Lactobacillus casei assay of folate activity in human serum.

Authors: V Herbert
Journal: J Clin Pathol Date: 1966-01 Impact factor: 3.411

9 in total

1. An explanation of the decreased serum folate values found using methods that involve prior extraction of the serum.

Authors: I J Temperley; J D O'Broin; J M Scott
Journal: Ir J Med Sci Date: 1975-12 Impact factor: 1.568

2. A regional quality control trial of folate assays.

Authors: D W Dawson; D A Newsome
Journal: J Clin Pathol Date: 1977-04 Impact factor: 3.411

3. Detrimental health relationship between blood lead and cadmium and the red blood cell folate level.

Authors: Bo-Kai Wang; Wei-Liang Chen
Journal: Sci Rep Date: 2022-04-22 Impact factor: 4.996

4. Folic acid blinded trial in identical twins with fragile X syndrome.

Authors: D S Rosenblatt; E A Duschenes; F V Hellstrom; M S Golick; M J Vekemans; S F Zeesman; E Andermann
Journal: Am J Hum Genet Date: 1985-05 Impact factor: 11.025

5. A critical intracellular concentration of fully reduced non-methylated folate polyglutamates prevents macrocytosis and diminished growth rate of human cell line K562 in culture.

Authors: D Watkins; B A Cooper
Journal: Biochem J Date: 1983-08-15 Impact factor: 3.857