Breaking News
April 25, 2019 - The Current issue of “The view from here” is concerned with Partnerships and Alliances
April 25, 2019 - Imaging method reveals long-lived patterns in cells of the eye
April 25, 2019 - Podcast: KHN’s ‘What The Health?’ The Abortion Wars Rage On
April 25, 2019 - Prolonged exposure therapy is more effective in treating veterans with PTSD, alcohol use disorder
April 24, 2019 - Our artificial cornea breakthrough could lead to self-assembling organs
April 24, 2019 - A Stanford black, female, gay surgery resident speaks out
April 24, 2019 - Donna Lynne on Extreme Sports, Lessons From the '60s, and Taking CUIMC to the Next Level
April 24, 2019 - Pain Clinics’ Doctors Needlessly Tested Hundreds Of Urine Samples, Court Records Show
April 24, 2019 - Researchers uncover potential clue to halt destruction of nerve cells in people with ALS
April 24, 2019 - Study uncovers reasons for poor mental health in bisexual people
April 24, 2019 - Screenings, interventions, and referrals can help adolescents overcome substance abuse
April 24, 2019 - Febrile seizures following vaccination are self-resolving and not dangerous
April 24, 2019 - Flow-UV inline UV-Visible spectrometer monitors dispersion in real time
April 24, 2019 - Rates of Marijuana Use in Cancer Patients on the Rise in U.S.
April 24, 2019 - Versatile drug may protect baby from hazards of intraamniotic infections
April 24, 2019 - Financial transparency may diminish trust in doctors, new study finds
April 24, 2019 - Calling all Riders: Velocity Extends Free Registration 
April 24, 2019 - The Homeless Are Dying In Record Numbers On The Streets Of L.A.
April 24, 2019 - Blocking BRAF ubiquitination may be an effective treatment approach in melanoma
April 24, 2019 - Simple mobility test helps predict hospital readmission in elderly heart attack patients
April 24, 2019 - Novel fluorescence imaging system helps surgeons remove small ovarian tumors
April 24, 2019 - Uncovering the Structure of HIV Integrase to Inform Drug Discovery
April 24, 2019 - Medical Marijuana Use Rising Among Cancer Patients
April 24, 2019 - Artificial intelligence approach optimizes embryo selection for IVF
April 24, 2019 - Doctor or detective? Sleuthing mysteries in medical school
April 24, 2019 - CUIMC Community Gives Blood During Spring 2019 Columbia University Blood Drive
April 24, 2019 - Americans Overwhelmingly Want Federal Protections Against Surprise Medical Bills
April 24, 2019 - Making Laboratories More Efficient with the Most Modern LIMS on the Market
April 24, 2019 - Treating cancer patients with personalized, combination therapies improves outcomes
April 24, 2019 - Researchers engineer new molecules to help stop lung cancer
April 24, 2019 - Acupuncture can be a wonderful tool for preventing number of diseases
April 24, 2019 - Daily life disability before hip replacement may predict poor post-operative outcomes
April 24, 2019 - Study finds involuntary staying in housing estates to be a potential health risk
April 24, 2019 - Older kidney disease patients starting dialysis die at higher rates than previously thought
April 24, 2019 - Time-restricted eating shows promise for controlling blood glucose levels
April 24, 2019 - Ambiguous genitalia in newborns may be more common than previously thought
April 24, 2019 - Research provides important insight on the brain-body connection
April 24, 2019 - In 10 Years, Half Of Middle-Income Elders Won’t Be Able To Afford Housing, Medical Care
April 24, 2019 - Researchers study how E. coli clones have become major cause of drug-resistant infections
April 24, 2019 - Bacterial and fungal toxins found in popular electronic cigarettes
April 24, 2019 - Factors affecting absorption of ‘sunshine vitamin’ during spring/summer months
April 24, 2019 - Texting helps improve medication adherence, health outcomes for patients with schizophrenia
April 24, 2019 - Cochrane Review looks at different ways to use nicotine replacement therapies
April 24, 2019 - New review on relationship between COPD and Type 2 diabetes
April 24, 2019 - Brain areas linked to memory and emotion aid odor navigation in humans
April 24, 2019 - Brain stimulation reverses age-related memory loss
April 24, 2019 - Amid Opioid Prescriber Crackdown, Health Officials Reach Out To Pain Patients
April 24, 2019 - $4 million NIH award will help establish UCI Skin Biology Resource-based Center
April 24, 2019 - Cancer drugs reprogram genes in breast tumors to prevent endocrine resistance, finds study
April 24, 2019 - Combination-imaging technique provides new window into macaque brain connections
April 24, 2019 - Researchers identify new allergen responsible for allergy to durum wheat
April 24, 2019 - Researchers define role of rare, influential cells in the bone marrow
April 24, 2019 - DNA rearrangement may predict poor outcomes in multiple myeloma
April 24, 2019 - FDA Approves Skyrizi (risankizumab-rzaa) for Moderate to Severe Plaque Psoriasis
April 24, 2019 - Combination therapy might be beneficial in schizophrenia
April 24, 2019 - Blood test can help match cancer patients to early phase clinical trials
April 24, 2019 - Women tend to underreport snoring and underestimate its loudness
April 24, 2019 - Comprehensive molecular test introduced for diagnosis of malaria caused by P. vivax parasites
April 24, 2019 - New range prediction approach increases accuracy, safety and tolerability of proton therapy
April 24, 2019 - Need for Sedation Up for Regular Cannabis Users
April 24, 2019 - Lack of access to antibiotics is a major global health challenge
April 24, 2019 - New study provides better understanding on safety of deworming programs
April 24, 2019 - EEG used to detect impact of maternal stress on neurodevelopment in 2-month-old infants
April 24, 2019 - FDA Approves First Generic Naloxone Nasal Spray Against Opioid Overdose
April 24, 2019 - A new way of finding compounds that prevent aging
April 24, 2019 - Mechanical training makes synthetic hydrogels perform more like muscle
April 24, 2019 - Study provides new insights into regulatory T cells’ role in protecting against autoimmune disease
April 24, 2019 - Pregnant women with type 1 diabetes are at greater risk of preterm birth
April 24, 2019 - ‘Tummy tuck’ can be safely performed in obese patients with no increase in complications
April 23, 2019 - ‘First’ 3-D print of heart with human tissue, vessels unveiled
April 23, 2019 - Which blood-based method works best to detect TB?
April 23, 2019 - Gene therapy cures infants suffering from ‘bubble boy’ immune disease
April 23, 2019 - Chemical-sampling wristbands detect similar exposures across three continents
April 23, 2019 - Management of Residual Limb Pain
April 23, 2019 - Molecular clock influences immune cell responses
April 23, 2019 - On the importance of culture, partnerships and diversity at the Dean’s Lecture Series
April 23, 2019 - Siddhartha Mukherjee Receives Lewis Thomas Prize for Writing About Science
April 23, 2019 - Dengue mosquito poses greatest danger of spreading Zika virus in Australia
April 23, 2019 - Scientists identify 104 high-risk genes for schizophrenia
April 23, 2019 - Abdominal etching can help patients to get classic ‘six-pack abs’ physique
Mussels take in microplastic pollution fibers and flush most of them out again

Mussels take in microplastic pollution fibers and flush most of them out again

image_pdfDownload PDFimage_print

New research shows that mussels readily take in microplastic pollution fibers from the ocean but quickly flush most of them out again, according to a study by researchers from Bigelow Laboratory for Ocean Sciences. The findings were published in December’s Marine Pollution Bulletin.

Human-made microplastics exist throughout the global ocean, from busy coastal areas to remote regions far from human habitation. They have myriad impacts: microplastics are eaten by tiny animals called zooplankton, play host to bacterial colonies, and can even change how energy and nutrients flow through ocean ecosystems.

“The big pieces of plastic you find on the beach are in your face, but microplastics are everywhere,” said Bigelow Laboratory Senior Research Scientist Paty Matrai, one of the study’s authors. “We desperately need ways to accurately and precisely measure their numbers in the ocean.”

The most abundant type of microplastics are fibers, which shed readily from materials as common as carpets and fleece clothing, and whose small size makes them edible by marine life as small as zooplankton. However, few studies to date have focused on this type of ocean pollution. Matrai worked with Bigelow Laboratory Senior Research Scientist David Fields and researchers from the Shaw Institute to learn how marine animals handle fibers – which has important implications for understanding how microplastics move up the food web. Plastic can both directly affect the animals that ingest it and accumulate in the animals that feed on them, including humans.

“We know that microfibers can be consumed by shellfish, but at what rate and how long they are retained by the animals remains unclear,” Fields said. “The degree to which plastic is impacting the food chain is unknown, but as more plastic make its way into the ocean, the number of organisms containing plastics is sure to increase.”

Through a series of laboratory experiments, the team found that the mussels quickly rejected most of the fibers they took up by coating them in mucus and expelling them. This method allowed them to efficiently rid themselves of some of the fibers without taking them fully into their bodies.

However, the mussels did ingest nearly one in 10 fibers, accumulating them in their body tissues. Moving those mussels to clean water, the scientists found, allowed them to flush most of the accumulated fibers from their bodies.

“Our work with microplastic fibers emphasizes the need for laboratory studies that accurately mimic an organism’s natural environment,” said Madelyn Woods, marine research coordinator at the Shaw Institute and lead author on the study. “Detailed studies of individual species and their mechanisms for particle selection will be important for understanding how microplastics affect ecosystems on a larger scale.”

The primary experiments used for this research placed mussels into water containing fibers at levels equivalent to those in the ocean. However, measuring the effect of those conditions presented the researchers with a major challenge: how to count the tiny plastic fibers. Most other microplastic experiments have used methods that are exceedingly laborious or do not resemble natural conditions, potentially skewing results. Matrai’s team used a FlowCam, an optical instrument originally developed at Bigelow Laboratory, to more easily enumerate the particles. Establishing this new method opens the door for future experiments into microplastic fibers.

“Because the ocean is so vast, microplastics aren’t actually that concentrated,” Matrai said. “But no one knows the full impact they have. The bottom line is, we need data to help us make informed decisions.”

Source:

https://www.bigelow.org/news/articles/2018-12-03.html

Tagged with:

About author

Related Articles