Evaluation of lacrimal production, osmolarity, crystallization, proteomic profile, and biochemistry of capuchin monkeys' tear film

J Med Primatol. 2018 Dec;47(6):371-378. doi: 10.1111/jmp.12368. Epub 2018 Jul 24.

Abstract

Background: To evaluate the composition and characteristics of capuchin monkey (CM) tear film.

Methods: Eleven CM (Sapajus sp.) was evaluated. Strip meniscometry test (SMT), osmolarity, and tear ferning test (TFT) (by Rolando and Masmali scales) were assessed. Tear protein profile (SDS-PAGE), and total protein, albumin, urea, glucose, and cholesterol levels in tear film and blood serum were screened.

Results: Median ± semi-interquatil range for SMT and osmolarity values were 8.0 ± 1.625 and 303.0 ± 9.875, respectively. TFT for Rolando was 2.0 ± 0.5, and Masmali was 2.0 ± 0.0. Monkeys's tear obtained type II and III for Rolando, and 1 and 2 for Masmali. Tear components showed protein bands among 23-217 kDa, and presence of albumin, urea, glucose, and cholesterol.

Conclusions: The results of SMT, osmolarity, TFT, SDS-PAGE, and tear biochemistry may serve as a reference baseline for CM, and the data may serve as a basis for future experimental model evaluations.

Keywords: strip meniscometry test; tear ferning test; tear osmolarity; tear protein profile.

MeSH terms

  • Animals
  • Cebinae*
  • Cebus
  • Crystallization
  • Female
  • Osmolar Concentration
  • Proteome / analysis*
  • Tears / chemistry*
  • Tears / physiology*

Substances

  • Proteome