On B6, Peripheral Levodopa, Carbidopa, AADC

Collecting references here - add more in the comments if you find them:

http://jnnp.bmj.com/content/34/6/682
Full text
http://jnnp.bmj.com/content/jnnp/34/6/682.full.pd

EFFECT OF PYRIDOXAL PHOSPHATE DEFICIENCY ON

AROMATIC L-AMINO ACID DECARBOXYLASE ACTIVITY

WITH L-DOPA AND L-5-HYDROXYTRYPTOPHAN

AS SUBSTRATES IN RATS

Mohammed Khalilur RAHMAN*, Toshiharu NAGATSU**, Tae SAKURAI***,

Seiji HORI***, Miyako ABE*** and Makoto MATSUDA***

Laboratoryo f Cell Physiology,D epartmento f LifeC hemistry,

Graduate School at Nagatsuta, Tokyo Institute of Technology, Yokohama 227, Japan

Accepted May 10, 1982 
https://pdfs.semanticscholar.org/b602/24d0da62d2dff4a48e39dcbf9e14318c17ce.pdf

On the mechanism of the nullification of CNS effects of L-DOPA by pyridoxine in Parkinsonian patients

Article · October 1972 with 5 Reads

DOI: 10.1111/j.1471-4159.1972.tb05126.x · Source: PubMed

https://www.researchgate.net/publication/18097207_On_the_mechanism_of_the_nullification_of_CNS_effects_of_L-DOPA_by_pyridoxine_in_Parkinsonian_patients

Drugs

May 1976, Volume 11, Issue 5, pp 329–377 | Cite as

Levodopa and Decarboxylase Inhibitors: A Review of their Clinical Pharmacology and Use in the Treatment of Parkinsonism

https://link.springer.com/article/10.2165/00003495-197611050-00001

December 27, 1971

Pyridoxine Antagonism of Levodopa in Parkinsonism

Arthur S. Leon, MS, MD; Herbert E. Spiegel, PhD; Gordon Thomas, MS; et al William B. Abrams, MD

Author Affiliations

From the Department of Medical Pharmacology, Hoffman-La Roche, Inc, Nutley, NJ, and the Special Treatment Unit, Newark (NJ) Beth Israel Medical Center. Dr. Abrams is now with Ayerst Laboratories, New York.

JAMA. 1971;218(13):1924-1927. doi:10.1001/jama.1971.03190260040011

https://jamanetwork.com/journals/jama/article-abstract/340338?redirect=true

Need Full Text

Structural insight into Parkinson's disease treatment from drug-inhibited DOPA decarboxylase.

Burkhard P, et al. Nat Struct Biol. 2001.

https://www.ncbi.nlm.nih.gov/m/pubmed/11685243/

Identification by Virtual Screening and In Vitro Testing of Human DOPA Decarboxylase Inhibitors

Frederick Daidone, Riccardo Montioli, [...], and Carla Borri Voltattorni

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3285636/

Effect of pyridoxine on the depletion of tissue pyridoxal phosphate by carbidopa☆

Luisa Airoldi

, 

Carol J. Watkins

, 

Jane F. Wiggins

¹

, 

Richard J. Wurtman

Laboratory of Neuroendocrine Regulation, Department of Nutrition and Food Science, Massachusetts Institute of Technology, Cambridge, Mass.U

http://www.metabolismjournal.com/article/0026-0495(78)90211-1/pdf