We measured plasma levodopa and large neutral amino acid (LNAA) levels in nine PD patients treated with carbidopa/levodopa and different isocaloric meals containing high protein-low carbohydrate, low protein-high carbohydrate, and balanced 5:1 carbohydrate:protein mixtures.lthough restricting dietary protein is a proposed adjunct to treating Parkinson's disease (PD), the effect of carbohydrate consumption is unknown.
Although the title of a journal article or book chapter is not usually italicized, sometimes words within the title may be italicized. These include book or movie titles, letters or words as linguistic examples, statistics, scientific names for animals, and other items that would be italicized in text, per APA Style guidelines.
1 Include up to 7 authors names in reference list (p. 184 APA manual 6th ed.) 2  Capitalize the first word of the article title and the first word of the subtitle, if any, and any proper nouns. 3  Do NOT italicize the article title; do NOT put quotation marks around it.  Journal name and volume number are italicized.