Evidence map›Paper›PMID 19369246›Full record

ArticleInvestigative ophthalmology & visual science2009

Age-related decline in rod phototransduction sensitivity in rhesus monkeys fed an n-3 fatty acid-deficient diet.

Brett G Jeffrey, Martha Neuringer

Abstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.2field-weighted citation impact, top 21% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 21 citations in OpenAlex.

  1. Polyunsaturated fatty acid metabolism in the retinal pigment epithelium and its association with outer retinal disease.Mammalian genome : official journal of the International Mammalian Genome Society · 2026
    Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Perspective: Structure-Function Claims on Infant Formula.Advances in nutrition (Bethesda, Md.) · 2018
    Article
  9. Article
  10. Article
  11. Dietary omega-3 fatty acids modulate large-scale systems organization in the rhesus macaque brain.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2014
    Article
  12. Article
  13. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Brett G JeffreyOregon National Primate Research Center and Casey Eye Institute, Oregon Health and Science University, Portland, Oregon 97006, USA. jeffreyb@ohsu.edu
Martha Neuringer
Oregon National Primate Research Center · US

Funding

YR 50 PROJ- ROBERTS PRIMATE ISLETP51RR000163 · NCRR · OREGON REGIONAL PRIMATE RESEARCH CENTER · PI FRUH, KLAUS J · 1985 to 2011
$140.8M
Dietary Fatty Acids and Photoreceptor FunctionR01EY013199 · NEI · OREGON HEALTH AND SCIENCE UNIVERSITY · PI NEURINGER, MARTHA D. · 2001 to 2003
$834k
REPRODUCTIVE STEROIDS AND EXPERIMENTAL STROKEK01RR000163 · NCRR · OREGON HEALTH AND SCIENCE UNIVERSITY · PI MURPHY, STEPHANIE J · 2000 to 2004
$479k
ESSENTIALITY OF DIETARY W-3 FATTY ACIDS IN PRIMATESR01DK029930 · NIDDK · OREGON HEALTH AND SCIENCE UNIVERSITY · PI NEURINGER, MARTHA D. · 1986 to 1997
–
NCRR NIH HHS K01 RR000163NCRR NIH HHS P51 RR000163NCRR NIH HHS RR000163NEI NIH HHS EY13199NEI NIH HHS R01 EY013199NIDDK NIH HHS R01 DK029930
6 · The paper itself

Abstract

purposeDocosahexaenoic acid (DHA), an n-3 fatty acid, is the major polyunsaturate in rod outer segments. The effect of long-term n-3 fatty acid deficiency on rod and cone phototransduction was investigated in the rhesus monkey.

methodsFrom birth to approximately = 9 years rhesus monkeys were fed an n-3-deficient diet (n = 9) known to reduce retinal DHA by 80%. Monkeys in the control group (n = 12) received either 8% alpha-linolenic acid (ALA) or 0.6% DHA, both of which support normal retinal DHA levels. None of the diets contained carotenoids. Photoactivation kinetics were assessed from the rate of increase and a P3 model fit of the ERG a-wave. Maximal cone amplitude and sensitivity were measured from the cone a-wave at 4 ms. The rod photoresponse and rod recovery were derived by using a paired flash

method

resultsRod sensitivity was reduced by 40% in the n-3-deficient monkeys at 9 but not 4.5 years. The onset of the rising phase of the photoresponse was significantly delayed (P < 0.004) at 9 years. Rod recovery was delayed by 20% in n-3-deficient monkeys at both ages, but only for bright saturating flashes. Cone phototransduction was not altered by n-3 deficiency.

conclusionsLong-term dietary n-3 deficiency in the rhesus monkey was associated with two changes in retinal function. First, there was a delay in rod recovery that has remained relatively constant throughout life. Second, there was an age-dependent loss in rod phototransduction sensitivity; the lack of dietary carotenoids may have contributed to this decline.

Indexed as

AgingAnimalsDocosahexaenoic AcidsElectroretinographyFatty Acids, Omega-3Macaca mulattaPhotic StimulationRetinal Cone Photoreceptor CellsRetinal Rod Photoreceptor CellsSafflower OilSoybean OilVision, OcularDocosahexaenoic AcidsFatty Acids, Omega-3Safflower OilSoybean Oil

Identifiers

PMID19369246
PMCPMC2824542
OpenAlexW2150758700

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.