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Clinical trial suggests ALS drug effective for treating spinal cord injuries

A small clinical trial with a pharmacokinetic sub-study, led by a world-renowned pharmacologist at the University of Houston, has demonstrated the promising…

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A small clinical trial with a pharmacokinetic sub-study, led by a world-renowned pharmacologist at the University of Houston, has demonstrated the promising effectiveness of the drug Riluzole for improving functionality in people with acute spinal cord injuries (SCI) if the drug is taken within 12 hours post-injury.  

Credit: University of Houston

A small clinical trial with a pharmacokinetic sub-study, led by a world-renowned pharmacologist at the University of Houston, has demonstrated the promising effectiveness of the drug Riluzole for improving functionality in people with acute spinal cord injuries (SCI) if the drug is taken within 12 hours post-injury.  

Riluzole is among the first drugs to show efficacy for treating acute SCI, which impacts an estimated 18,000 people in the United States each year. The U.S. Food and Drug Administration (FDA) approved the drug in 1995 for the treatment of amyotrophic lateral sclerosis, known as ALS or Lou Gehrig’s Disease, with a daily oral dose of one 50-milligram tablet twice a day. The same dosage regimen was used for this phase 2/3 multi-center clinical trial repurposing the drug for SCI patients. The work is published in the Journal of Neurotrauma.  

“Riluzole is a medication that blocks certain sodium channels and is commonly used as an anticonvulsant. However, our studies demonstrate its neuroprotective potential to preserve nerve cells and help people regain some of their lost functions after spinal cord injury,” said lead study author Diana S-L Chow, Paula & John J. Lovoi Sr. Endowed Professor in Drug Discovery and Development and director of the Institute of Drug Education and Research at the UH College of Pharmacy.  

Chow cautions that while the results of this study are positive, further investigation is needed given the small number of participants involved in the trial – 32 patients with head and neck injuries were examined. 

“The contribution of our investigation is to offer the proof of concept for the drug discovery and development approach for SCI so that the scientific community may facilitate future treatments,” said Chow, noting that Riluzole can be prescribed for “off-label” use by physicians in clinical settings for a different purpose, such as acute SCI. However, it is not for chronic SCI patients to use for purposes other than ALS, before FDA approval. 

“These findings have the potential to influence future dosing strategies, ultimately enhancing patient care and improving therapeutic outcomes,” she added. 

The acute and progressive nature of traumatic SCI and the complexity of secondary injury alters the pharmacokinetics of therapeutics, namely, how the body processes a drug. For the clinical trial, the researchers developed a model to capture the dynamic nature of the drug’s behavior and patient response, including motor scores in elbow flexors/extensors, wrist extensors and finger flexors/abductors in the upper limbs; hip flexors, knee extensors, ankle dorsiflexors/plantar flexors and a long toe extensor in the lower limbs. All are influenced by the complex pathophysiology of SCI and impacts of the progression of the condition after injury.  

“Our research underscores the need for a specific signal in the body that can tell us how well a treatment for spinal cord injuries works. In our study, we used an SCI-specific biomarker called phosphorylated neurofilament-heavy subunit (pNF-H) to show how Riluzole helps reduce neuron cell damage in SCI. Our findings revealed that patients who received the treatment had lower levels of pNF-H, confirming the positive effect of the medication on spinal cord injuries,” said Chow.  

Chow is an internationally recognized expert in the development and analyses of new drug formulations and drug-delivery systems for the treatment of leukemia, other cancers and infection. She has also studied the stability and efficacy of medications used in space flights on the International Space Station. 

This most recent study also established a link between short-term outcomes, such as pNF-H concentration, and long-term improvements in functional motor abilities. “This connection suggests the feasibility of predicting if a patient will benefit from the treatment with long-term functional improvements early in the treatment process at the bedside through the objective biomarker measurement,” she added. 

Other members of the research team include Ashley Nguyen, a recent UH graduate and clinical pharmacologist at Janssen, Johnson & Johnson; Junghwa Park, PharmD and doctoral student; and Lei Wu, previous research assistant professor and current associate director in clinical pharmacology of AbbVie pharmaceutical company; Elizabeth Gardiner Troups, Houston Methodist Research Institute; James Shields Harrop, Thomas Jefferson University; James David Guest, University of Miami; Karl Michael Schmitt, UTHealth Houston; Bizhan Aarabi, University of Maryland; Michael George Fehlings, University of Toronto; Maxwell Boakye, University of Louisville; and late Robert Geroge Grossman, Houston Methodist Research Institute. 

The material in Chow’s report is based upon work supported by the U.S. Army Medical Research Acquisition Activity, the Christopher & Dana Reeve Foundation, with supplemental funding by the Institute for Drug Education and Research (IDER) of the UH College of Pharmacy. 


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Low Iron Levels In Blood Could Trigger Long COVID: Study

Low Iron Levels In Blood Could Trigger Long COVID: Study

Authored by Amie Dahnke via The Epoch Times (emphasis ours),

People with inadequate…

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Low Iron Levels In Blood Could Trigger Long COVID: Study

Authored by Amie Dahnke via The Epoch Times (emphasis ours),

People with inadequate iron levels in their blood due to a COVID-19 infection could be at greater risk of long COVID.

(Shutterstock)

A new study indicates that problems with iron levels in the bloodstream likely trigger chronic inflammation and other conditions associated with the post-COVID phenomenon. The findings, published on March 1 in Nature Immunology, could offer new ways to treat or prevent the condition.

Long COVID Patients Have Low Iron Levels

Researchers at the University of Cambridge pinpointed low iron as a potential link to long-COVID symptoms thanks to a study they initiated shortly after the start of the pandemic. They recruited people who tested positive for the virus to provide blood samples for analysis over a year, which allowed the researchers to look for post-infection changes in the blood. The researchers looked at 214 samples and found that 45 percent of patients reported symptoms of long COVID that lasted between three and 10 months.

In analyzing the blood samples, the research team noticed that people experiencing long COVID had low iron levels, contributing to anemia and low red blood cell production, just two weeks after they were diagnosed with COVID-19. This was true for patients regardless of age, sex, or the initial severity of their infection.

According to one of the study co-authors, the removal of iron from the bloodstream is a natural process and defense mechanism of the body.

But it can jeopardize a person’s recovery.

When the body has an infection, it responds by removing iron from the bloodstream. This protects us from potentially lethal bacteria that capture the iron in the bloodstream and grow rapidly. It’s an evolutionary response that redistributes iron in the body, and the blood plasma becomes an iron desert,” University of Oxford professor Hal Drakesmith said in a press release. “However, if this goes on for a long time, there is less iron for red blood cells, so oxygen is transported less efficiently affecting metabolism and energy production, and for white blood cells, which need iron to work properly. The protective mechanism ends up becoming a problem.”

The research team believes that consistently low iron levels could explain why individuals with long COVID continue to experience fatigue and difficulty exercising. As such, the researchers suggested iron supplementation to help regulate and prevent the often debilitating symptoms associated with long COVID.

It isn’t necessarily the case that individuals don’t have enough iron in their body, it’s just that it’s trapped in the wrong place,” Aimee Hanson, a postdoctoral researcher at the University of Cambridge who worked on the study, said in the press release. “What we need is a way to remobilize the iron and pull it back into the bloodstream, where it becomes more useful to the red blood cells.”

The research team pointed out that iron supplementation isn’t always straightforward. Achieving the right level of iron varies from person to person. Too much iron can cause stomach issues, ranging from constipation, nausea, and abdominal pain to gastritis and gastric lesions.

1 in 5 Still Affected by Long COVID

COVID-19 has affected nearly 40 percent of Americans, with one in five of those still suffering from symptoms of long COVID, according to the U.S. Centers for Disease Control and Prevention (CDC). Long COVID is marked by health issues that continue at least four weeks after an individual was initially diagnosed with COVID-19. Symptoms can last for days, weeks, months, or years and may include fatigue, cough or chest pain, headache, brain fog, depression or anxiety, digestive issues, and joint or muscle pain.

Tyler Durden Sat, 03/09/2024 - 12:50

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Walmart joins Costco in sharing key pricing news

The massive retailers have both shared information that some retailers keep very close to the vest.

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As we head toward a presidential election, the presumed candidates for both parties will look for issues that rally undecided voters. 

The economy will be a key issue, with Democrats pointing to job creation and lowering prices while Republicans will cite the layoffs at Big Tech companies, high housing prices, and of course, sticky inflation.

The covid pandemic created a perfect storm for inflation and higher prices. It became harder to get many items because people getting sick slowed down, or even stopped, production at some factories.

Related: Popular mall retailer shuts down abruptly after bankruptcy filing

It was also a period where demand increased while shipping, trucking and delivery systems were all strained or thrown out of whack. The combination led to product shortages and higher prices.

You might have gone to the grocery store and not been able to buy your favorite paper towel brand or find toilet paper at all. That happened partly because of the supply chain and partly due to increased demand, but at the end of the day, it led to higher prices, which some consumers blamed on President Joe Biden's administration.

Biden, of course, was blamed for the price increases, but as inflation has dropped and grocery prices have fallen, few companies have been up front about it. That's probably not a political choice in most cases. Instead, some companies have chosen to lower prices more slowly than they raised them.

However, two major retailers, Walmart (WMT) and Costco, have been very honest about inflation. Walmart Chief Executive Doug McMillon's most recent comments validate what Biden's administration has been saying about the state of the economy. And they contrast with the economic picture being painted by Republicans who support their presumptive nominee, Donald Trump.

Walmart has seen inflation drop in many key areas.

Image source: Joe Raedle/Getty Images

Walmart sees lower prices

McMillon does not talk about lower prices to make a political statement. He's communicating with customers and potential customers through the analysts who cover the company's quarterly-earnings calls.

During Walmart's fiscal-fourth-quarter-earnings call, McMillon was clear that prices are going down.

"I'm excited about the omnichannel net promoter score trends the team is driving. Across countries, we continue to see a customer that's resilient but looking for value. As always, we're working hard to deliver that for them, including through our rollbacks on food pricing in Walmart U.S. Those were up significantly in Q4 versus last year, following a big increase in Q3," he said.

He was specific about where the chain has seen prices go down.

"Our general merchandise prices are lower than a year ago and even two years ago in some categories, which means our customers are finding value in areas like apparel and hard lines," he said. "In food, prices are lower than a year ago in places like eggs, apples, and deli snacks, but higher in other places like asparagus and blackberries."

McMillon said that in other areas prices were still up but have been falling.

"Dry grocery and consumables categories like paper goods and cleaning supplies are up mid-single digits versus last year and high teens versus two years ago. Private-brand penetration is up in many of the countries where we operate, including the United States," he said.

Costco sees almost no inflation impact

McMillon avoided the word inflation in his comments. Costco  (COST)  Chief Financial Officer Richard Galanti, who steps down on March 15, has been very transparent on the topic.

The CFO commented on inflation during his company's fiscal-first-quarter-earnings call.

"Most recently, in the last fourth-quarter discussion, we had estimated that year-over-year inflation was in the 1% to 2% range. Our estimate for the quarter just ended, that inflation was in the 0% to 1% range," he said.

Galanti made clear that inflation (and even deflation) varied by category.

"A bigger deflation in some big and bulky items like furniture sets due to lower freight costs year over year, as well as on things like domestics, bulky lower-priced items, again, where the freight cost is significant. Some deflationary items were as much as 20% to 30% and, again, mostly freight-related," he added.

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Walmart has really good news for shoppers (and Joe Biden)

The giant retailer joins Costco in making a statement that has political overtones, even if that’s not the intent.

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As we head toward a presidential election, the presumed candidates for both parties will look for issues that rally undecided voters. 

The economy will be a key issue, with Democrats pointing to job creation and lowering prices while Republicans will cite the layoffs at Big Tech companies, high housing prices, and of course, sticky inflation.

The covid pandemic created a perfect storm for inflation and higher prices. It became harder to get many items because people getting sick slowed down, or even stopped, production at some factories.

Related: Popular mall retailer shuts down abruptly after bankruptcy filing

It was also a period where demand increased while shipping, trucking and delivery systems were all strained or thrown out of whack. The combination led to product shortages and higher prices.

You might have gone to the grocery store and not been able to buy your favorite paper towel brand or find toilet paper at all. That happened partly because of the supply chain and partly due to increased demand, but at the end of the day, it led to higher prices, which some consumers blamed on President Joe Biden's administration.

Biden, of course, was blamed for the price increases, but as inflation has dropped and grocery prices have fallen, few companies have been up front about it. That's probably not a political choice in most cases. Instead, some companies have chosen to lower prices more slowly than they raised them.

However, two major retailers, Walmart (WMT) and Costco, have been very honest about inflation. Walmart Chief Executive Doug McMillon's most recent comments validate what Biden's administration has been saying about the state of the economy. And they contrast with the economic picture being painted by Republicans who support their presumptive nominee, Donald Trump.

Walmart has seen inflation drop in many key areas.

Image source: Joe Raedle/Getty Images

Walmart sees lower prices

McMillon does not talk about lower prices to make a political statement. He's communicating with customers and potential customers through the analysts who cover the company's quarterly-earnings calls.

During Walmart's fiscal-fourth-quarter-earnings call, McMillon was clear that prices are going down.

"I'm excited about the omnichannel net promoter score trends the team is driving. Across countries, we continue to see a customer that's resilient but looking for value. As always, we're working hard to deliver that for them, including through our rollbacks on food pricing in Walmart U.S. Those were up significantly in Q4 versus last year, following a big increase in Q3," he said.

He was specific about where the chain has seen prices go down.

"Our general merchandise prices are lower than a year ago and even two years ago in some categories, which means our customers are finding value in areas like apparel and hard lines," he said. "In food, prices are lower than a year ago in places like eggs, apples, and deli snacks, but higher in other places like asparagus and blackberries."

McMillon said that in other areas prices were still up but have been falling.

"Dry grocery and consumables categories like paper goods and cleaning supplies are up mid-single digits versus last year and high teens versus two years ago. Private-brand penetration is up in many of the countries where we operate, including the United States," he said.

Costco sees almost no inflation impact

McMillon avoided the word inflation in his comments. Costco  (COST)  Chief Financial Officer Richard Galanti, who steps down on March 15, has been very transparent on the topic.

The CFO commented on inflation during his company's fiscal-first-quarter-earnings call.

"Most recently, in the last fourth-quarter discussion, we had estimated that year-over-year inflation was in the 1% to 2% range. Our estimate for the quarter just ended, that inflation was in the 0% to 1% range," he said.

Galanti made clear that inflation (and even deflation) varied by category.

"A bigger deflation in some big and bulky items like furniture sets due to lower freight costs year over year, as well as on things like domestics, bulky lower-priced items, again, where the freight cost is significant. Some deflationary items were as much as 20% to 30% and, again, mostly freight-related," he added.

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