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#Hypoxia

0 posts0 participants0 posts today
Public
Warren Currie 🦠🦐

Weekend #Plankton #Factoid 🦠🦐
Today we look at Phaeocystis, a global genus of uncalcified bi-flagellated Haptophyte #algae. They can be single-celled or form huge colonies with a gelateous matrix which prevents grazing. These harmful blooms can cause #hypoxia and create enormous mounds of foam on beaches which have led to drowning deaths. These blooms are important to the export of #carbon to deep water and form clouds by emitting dimethylsulfide.
#ClimateChange #Science
annualreviews.org/content/jour

image/jpeg a microscopic photograph of yellow-brown spherical colonies of algae against a black background. Photo © Jolanda van Iperen https://www.nioz.nl/en/expertise/wadden-delta-research-centre/news-media/wadden-sea-species/phytoplankton-series/phaeocystis-globosa
image/jpeg two children play in a large wall of brownish foam on a beach. Photo Michael Hruby https://www.tumblr.com/terramarproject/44800336071/masses-of-sea-foam-had-washed-up-on-pearl-beach-in
Public
Rhyothemis

OMG - I did not know this -

Epidermal Sensing of Oxygen Is Essential for Systemic Hypoxic Response
doi.org/10.1016/j.cell.2008.02

I have not yet read the article, nor have I finished watching the video that had me look up the article:

Tissue identity and rejuvenation - going skin deep with Luis Garza!
youtu.be/5iEXYrnZsuM?si=1v2t19

I had to stop everything and post about this since I'm gobsmacked.

How did I not know this?
The implications for chronic illnesses could be huge.

I need to get back to my chores now, I will probably post more on this later.

#biology #medicine
#physiology #OxygenSensing
#hypoxia #dermatology #HBOT

Public
preLights

Hypoxia regulates embryonic fitness in mosaic aneuploid embryos.

In his first preLight, Anchel De Jaime Soguero highlights work from Estefania Sanchez-Vasquez, Marianne E. Bronner & Magdalena Zernicka-Goetz. #preprint

Read his preLight + responses from the authors below ⬇️ 👀

preLight 👉 prelights.biologists.com/highl

preLightsHIF1A contributes to the survival of aneuploid and mosaic pre-implantation embryos - preLightsHypoxia regulates embryonic fitness in mosaic aneuploid embryos
#biology#development#aneuploidy
Continued thread
Public
Warren Currie 🦠🦐

Because access to a ship like the Limnos is so valuable, we are again sharing this cruise with Environment and Climate Change Canada (ECCC) technical operations group who are servicing and retrieving #GreatLakes #science moorings and meteorological buoys. These are very important instruments used binationally by Canada and US agencies such as NOAA for forecasting not only weather, but also #hypoxia and algal blooms. Dreissena mussels cover these. Many buoys to collect so deck space gets tight!

A bright yellow torpedo shaped float is retrieved off the side of a ship by two Canadian Coast Guard crew members. Instruments hang from the wire on this mooring.
A bottom mounted acoustics instrument mooring is hosed down to clean it after being retrieved from the bottom of a large lake. Several crew members are watching the process.
A very large meteorological discus buoy is being placed on deck by a number of coast guard crew after retrieval from Lake Erie. The solar panels and weather station on top are clearly visible.
A large yellow discus buoy sits on the deck of a ship, blocking access from a ladder to the top deck.
Public
Her Doing Health

It's early days, but as someone who wants to one day, I was fascinated.

Genus , a common studied for other reasons (increased cognitive development in infants & lower risk of & in adults), can also possibly reduce damage caused by

science.org/content/article/mi.

#Hypoxia#Microbiome#ImmuneSystems
Public
Warren Currie 🦠🦐

"Sheepshead are a humpbacked freshwater fish which are bottom feeders and considered a nuisance fish by anglers, according to Nature Conservancy Canada."
lfpress.com/news/local-news/wh

Well that's just mean. Freshwater Drum are a native #fish important to #GreatLakes food-webs.

And, Nature Conservancy says this! Do better London Free Press.
natureconservancy.ca/en/blog/a

The real point is why so many Drum are washing up on beaches. This is due to severe #hypoxia in #LakeErie this summer. #ClimateChange

lfpressWhy are so many dead fish washing ashore at Lake Erie beaches?Beaches at Port Bruce and Port Stanley were littered with dead fish because of what one expert says is likely a natural cause
Public
earthling

Primed for pain by sleep apnea
2/2
#Hypoxia activated peripheral macrophages in the circulation and promoted their recruitment into sensory nerve tissues, the sensitivity of which was increased by macrophage-released cytokines. The findings identify a target to potentially reduce chronic #pain in patients with sleep #apnea.

—Leslie K. Ferrarelli
Sci. Signal. (2024)

Public
Warren Currie 🦠🦐

A huge shout out to my #FoodWebs lab members working hard this weekend collecting water chem, phyto- and #zooplankton, and measuring algal and bacterial growth rate on #LakeErie for our summer mission on the CCGS Limnos. This is in support of the binational #GreatLakes Cooperative #Science and #Monitoring Initiative. Includes three #students from U Guelph, U Toronto and U Waterloo. We are seeing significant #hypoxia and #HABs #algae blooms early in the year after the mild winter. #ClimateChange

A photo of five science staff standing in front of a red and white coast guard ship with Canada on the side.
Photo of a science crew member with and smile and arms swung wide with many boxes and equipment to still be stowed on the lab bench of the ship Limnos.
A mixed group of six science staff sit around a lunch table in the Limnos mess discussing the upcoming cruise plan.
A map image of the the last day's track of the LIMNOS around the western part of Lake Erie. The ship is currently north of Pelee Island, just west of Point Pelee. The ship has crossed the US Canada border several times in north south transects. Image from MarineTraffic.
Public
Benjamin Carr, Ph.D. 👨🏻‍💻🧬

#ClimateChange is causing low-oxygen levels in #Pacific Northwest #ocean, report says

Widespread and increasing near-bottom #hypoxia in the coastal ocean off the #UnitedStates #PacificNorthwest nature.com/articles/s41598-024
#OpenAccess

NatureWidespread and increasing near-bottom hypoxia in the coastal ocean off the United States Pacific Northwest - Scientific ReportsThe 2021 summer upwelling season off the United States Pacific Northwest coast was unusually strong leading to widespread near-bottom, low-oxygen waters. During summer 2021, an unprecedented number of ship- and underwater glider-based measurements of dissolved oxygen were made in this region. Near-bottom hypoxia, that is dissolved oxygen less than 61 µmol kg−1 and harmful to marine animals, was observed over nearly half of the continental shelf inshore of the 200-m isobath, covering 15,500 square kilometers. A mid-shelf ribbon with near-bottom, dissolved oxygen less than 50 µmol kg−1 extended for 450 km off north-central Oregon and Washington. Spatial patterns in near-bottom oxygen are related to the continental shelf width and other features of the region. Maps of near-bottom oxygen since 1950 show a consistent trend toward lower oxygen levels over time. The fraction of near-bottom water inshore of the 200-m isobath that is hypoxic on average during the summer upwelling season increases over time from nearly absent (2%) in 1950–1980, to 24% in 2009–2018, compared with 56% during the anomalously strong upwelling conditions in 2021. Widespread and increasing near-bottom hypoxia is consistent with increased upwelling-favorable wind forcing under climate change.
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