On a “lighter” note

Blog vol 4.13. On a “lighter” note.


Last week’s blog on Wnt signalling bent my brain, so this week, a lighter topic.


Light and plants in fact. This time of year, in our area there are fields of sunflowers grown as cut flowers or for the seeds. The sunflower is a fascinating plant whose flower follows the sun across the summer sky, though in actuality it is only the young flower that is heliotropic, attracted to the sun. As the flower matures it locks in on the east as it waits for the sun to rise and stays there. Our family grows them for their beauty and to have the added benefit of free-standing birdfeeders in late summer. Very cheery and hopeful, one cannot help but think of Van Gogh’s beautiful painting of sunflowers.


Sunflowers, moonflowers.


A wonderful picture book, just released in 2023, by author Sarah Mackenzie and illustrator Gabrielle Grimard, called While Everyone is Sleeping tells the story of a little shrew who goes out at night to dance among the moonflowers (ISBN 978-1-956393-02-6).   It is worth a read, especially with the grandkids. The concept of moonflowers captures the imagination. Are they like sunflowers, but follow the moon? And why are these flowers open at night when all the pollinators are in bed in their nests? 


Moon Flowers, Ipomoea alba, are trumpet-shaped like morning glories, are bright white, and come out only at night. They are a perennial vine in southern climes like Arizona but are grown as annuals in southern Ontario. They do not open by light or moonlight but have photo-sensors that track the length of day. In late summer or early fall, they bloom at sundown and remain in bloom all night. When in bloom they glow and are quite striking, but when dawn arrives the flowers close up. 


A night garden is a thing, who knew? Actually the YA book, The Night Gardener, by Jonathan Auxier (another great read! a little creepy, deliciously so) features moonflowers also, though that is not all the gardening the night gardener does (of course).


Bees or wasps or birds can sense and drink from daytime flowers, but what is going on with moonflowers? How are they pollinated? Moonflowers have a lovely fragrance and attract night-flying creatures like moths and bats to their nectar.   



The superpower of light, super interesting, the things you learn reading to the grandkids. 

 

 

the good doctor


The good doctor take a deeper look at how gut health is connected to eye tissues.
By Dr. Mark Germain April 29, 2026
Blog vol 6.40. The Gut and the Eyes. One of my biggest jobs is to keep abreast of new research and advances in eye health. Most recently, we have seen new stem cell research, gene therapies, as well as new drugs for dry and wet macular degeneration. In January of this year, there was an article in the journal, Cell Death and Disease, that looked at cell apoptosis, specifically with the photoreceptors of the eye. (Read the article here ). Apoptosis is the genetic programming of deliberate and constructive cell death, allowing for the maintenance of healthy structures and systems in the body. Some estimates have the body replacing 50 to 70 billion cells daily by this process. Necrosis, on the other hand, is unplanned cell death caused by injury, toxins, or other negative outside factors; this causes inflammation and disrupts the body’s balance of things. There are stressors that speed up cell turnover. The study looked at photoreceptors in the retina and were able to demonstrate cellular recovery, even in late stages of apoptosis, recovery not breakdown. When certain stressors were reduced, by working with the mitochondria, there was recovery of the photoreceptor cells. How? Mitophagy, the mitochondria’s own process of programmed breaking down and then repurposing the recycled components for new ones. This mitochondrial repair helps to reverse the sequence of apoptosis for the photoreceptors. Mitochondria, how cool. How is this helpful for our eyes? Conditions like retinitis pigmentosa or macular degeneration directly involve the photoreceptors and may be slowed or reversed by helping the mitochondria. So, let’s take care of those mitochondria. There is some evidence for nutritional support for the mitochondrial system. The nutrient, Urolithin A (UA), which is a compound made in our gut from fiber found in pomegranates, berries, and nuts is the only clinically proven substance known to trigger mitophagy, made in the gut no less. Vitamin B3 is critical for mitochondria function, however vitamin B3 based supplements are still to be clinically tested for their support of cell recovery. Nutrients Coenzyme Q10 and L-carnitine are known to help the mitochondria generate energy, and interestingly, infrared light therapy has also been shown to benefit mitochondrial function. Again, food for thought. The gut and its function needs a lot of research. How do probiotics and nutrient precursors affect eye tissues? It is so interesting that the gut can be a factor in eye health. Maybe adding Urolithin A as a supplement is wise, along with the antioxidants in Lutein and Zeaxanthin we use to combat photoreceptor degeneration. Will keep you posted on any new developments.  The good doctor
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