scholarly journals Is Blue Light the Next Little Blue Pill?: Effects of Light‐Stimulation on Erectile Dynamics

2020 ◽  
Vol 34 (S1) ◽  
pp. 1-1
Author(s):  
Justin La Favor ◽  
Matthew DeYong ◽  
Dan Berkowitz ◽  
Trinity Bivalacqua ◽  
Arthur Burnett
Keyword(s):  
Blue Light ◽  
Light Stimulation ◽  
Blue Pill

scholarly journals Transcriptome Analysis Reveals Candidate Genes Involved in Light-Induced Primordium Differentiation in Pleurotus eryngii

2021 ◽  
Vol 23 (1) ◽  
pp. 435
Author(s):  
Dou Ye ◽  
Fang Du ◽  
Qingxiu Hu ◽  
Yajie Zou ◽  
Xue Bai
Keyword(s):  
Blue Light ◽  
High Throughput Sequencing ◽  
Expression Profiles ◽  
Red Light ◽  
Enrichment Analysis ◽  
Mapk Signaling ◽  
Pleurotus Eryngii ◽  
Light Stimulation ◽  
Edible Fungus ◽  
Oxidative Phosphorylation Pathway

Pleurotus eryngii, a highly valued edible fungus, is one of the major commercially cultivated mushrooms in China. The development of P. eryngii, especially during the stage of primordium differentiation, is easily affected by light. However, the molecular mechanism underlying the response of primordium differentiation to light remains unknown. In the present study, primordium expression profiles under blue-light stimulation, red-light stimulation, and exposure to darkness were compared using high-throughput sequencing. A total of 16,321 differentially expressed genes (DEGs) were identified from three comparisons. GO enrichment analysis showed that a large number of DEGs were related to light stimulation and amino acid biosynthesis. KEGG analyses demonstrated that the MAPK signaling pathway, oxidative phosphorylation pathway, and RNA transport were most active during primordium differentiation. Furthermore, it was predicted that the blue-light photoreceptor WC-1 and Deoxyribodipyrimidine photolyase PHR play important roles in the primordium differentiation of P. eryngii. Taken together, the results of this study provide a speculative mechanism that light induces primordium differentiation and a foundation for further research on fruiting body development in P. eryngii.

scholarly journals The Influence of New Colored Light Stimulation Methods on Heart Rate Variability, Temperature, and Well-Being: Results of a Pilot Study in Humans

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Daniela Litscher ◽  
Lu Wang ◽  
Ingrid Gaischek ◽  
Gerhard Litscher
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pilot Study ◽  
Blue Light ◽  
Red Light ◽  
Well Being ◽  
Light Stimulation ◽  
State Of Mind ◽  
Environmental Stimulation ◽  
Nose Temperature

Changes of light intensity of different colors can shift many physiological parameters and conditions like melatonin, alertness, body temperature, heart rate (HR), and heart rate variability (HRV). The aim of this pilot study was to investigate acute temperature, HR, HRV, and state of mind reactivities after illumination with red (631 nm) and blue (456 nm) light (illuminance 140 lux for both). Seven healthy volunteers (5 females, 2 males; mean age ± SD 34.1 ± 11.9 years) were investigated at the Medical University of Graz, using new color light panels. Significant decreases were found only after 10 min blue light stimulation in nose temperature (P=0.046), HR (P<0.05), and total HRV (P=0.029), in association with a significant alteration of the emotional state (stress level score,P=0.006). However, red light stimulation of the same persons did not induce the same effects in these parameters. The effect of blue light as environmental stimulation on human health is not clarified in detail and needs further investigations.

scholarly journals Cataract type and pupillary response to blue and white light stimuli

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Manami Kuze ◽  
Kazuno Negishi ◽  
Toshiyuki Koyasu ◽  
Mineo Kondo ◽  
Kazuo Tsubota ◽  
...  
Keyword(s):  
Blue Light ◽  
Stimulus Duration ◽  
White Light ◽  
Light Stimulus ◽  
Pupillary Response ◽  
Ocular Lens ◽  
Light Stimulation ◽  
Significant Difference ◽  
Light Stimuli ◽  
Pupil Reaction

AbstractWe evaluated the pupil reaction to blue and white light stimulation in 70 eyes with cataract and in 38 eyes with a selective blue-light filtering intra-ocular lens. The diameter of the pupil before stimulation was set as baseline (BPD) and, after a stimulus duration of 1 s, the post-illumination pupillary response (PIPR) was measured using an electronic pupillometer. The BPD showed no significant difference among three grades of nuclear sclerosis (NS). In contrast, the PIPRs differed significantly among the NS grades eyes including with and without subcapsular cataract (SC) and IOL eyes for white light (p < 0.05, Kruskal–Wallis test), but not for blue light. Subcapsular opacity did not affect the BPD or PIPR in all cataract grades for either light stimulus. The tendency of larger PIPR in the pseudophakic eyes than the cataract eyes for both lights, however significant difference was found only for white light (p < 0.05 for white light, p > 0.05 for blue light). Our study demonstrates retention of the PIPR for blue light, but not for white light in cataract eyes. We also confirmed that the pupillary response in pseudohakic eyes with a selective blue light-filtering intra ocular lens was greater than that in cataractous eyes for white light.

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