Connect with us

We’re not all equal in the face of the coronavirus

We’re not all equal in the face of the coronavirus

Published

on

IMAGE

Credit: @DR

The genetic variability of immunity lies particularly in the genes of the HLA (Human Leukocyte Antigen) system. These genes produce HLA molecules that are positioned on the surface of cells. When a virus infects an organism, the invader’s proteins are first cut into small fragments called peptides. The HLA molecules then bind on to these fragments and expose them to the surface of the cells, thereby triggering a cascade of immunity reactions designed to eliminate the virus.

Alicia Sanchez-Mazas, a professor at the Anthropology Unit in UNIGE’s Faculty of Sciences, explains: “From the 450 or so most common HLA molecules in hundreds of populations worldwide, we tried to identify the ones that are most strongly bound to the peptides of the new coronavirus.” Over 7,000 peptides can be derived from all of the viral proteins of the coronavirus.

The Geneva-based researcher and her international team used bioinformatic tools to perform the analysis. These can predict the binding affinities between the HLA molecules and the viral peptides on the basis of their physical and chemical properties. The scientists then turned to statistical models to compare the frequencies of these HLA variants in different human populations.

Classification of HLA molecules

The study classified the approximately 450 HLA molecules according to their relative capacity to bind the coronavirus peptides. It provides an essential reference inventory for identifying the genetic resistance or susceptibility of individuals to the virus. The study has also shown that the frequencies of these HLA variants differ significantly from one population to the next.

José Manuel Nunes, a researcher at the Anthropology Unit – and co-author of the article – further explains: “We were surprised to find that Indigenous populations in America had both the highest frequencies of HLA variants that bind the most strongly to the peptides and the lowest frequencies of those that bind the least strongly.” However, as José Manuel Nunes continues, we should not draw too hasty a conclusion from these results: “HLA molecules contribute to the immune response but they are far from being the only element that can be used to predict effective or ineffective resistance to a virus. This is also verified on the ground since America’s Indigenous populations are apparently no less affected than others by COVID-19.”

“Generalist” molecules

In the same study, the authors also analysed the HLA-peptide bindings for all of the proteins of the six other viruses with pandemic potential (two other coronaviruses, three influenza viruses and the HIV-1 virus of AIDS). This showed that many HLA variants are capable of binding strongly to the peptides of all seven viruses studied. Others do the same for all respiratory-type viruses (coronavirus and influenza). This means that there are numerous “generalist” HLA molecules that are effective against a number of different viruses.

“The differences between populations observed in this study are actually differences in the frequencies of the generalist HLA variants that do not bind specifically to the coronavirus but also to other pathogens”, points out professor Sanchez-Mazas. “This is what makes us think that the current differences between populations are the result of past adaptations to different pathogenic pressures, which is extremely informative for understanding the genetic evolution of our species.”

A logical follow-up to the study will be to determine precisely which coronavirus peptides are most strongly bound to the HLA molecules. It is these peptides that will have the highest chances of triggering an effective immune reaction. Identifying them will be vital for developing a vaccine.

###

Media Contact
Alicia Sanchez-Mazas
Alicia.Sanchez-Mazas@unige.ch

Related Journal Article

http://dx.doi.org/10.1111/tan.13956

Read More

Continue Reading

Uncategorized

Key shipping company files for Chapter 11 bankruptcy

The Illinois-based general freight trucking company filed for Chapter 11 bankruptcy to reorganize.

Published

on

The U.S. trucking industry has had a difficult beginning of the year for 2024 with several logistics companies filing for bankruptcy to seek either a Chapter 7 liquidation or Chapter 11 reorganization.

The Covid-19 pandemic caused a lot of supply chain issues for logistics companies and also created a shortage of truck drivers as many left the business for other occupations. Shipping companies, in the meantime, have had extreme difficulty recruiting new drivers for thousands of unfilled jobs.

Related: Tesla rival’s filing reveals Chapter 11 bankruptcy is possible

Freight forwarder company Boateng Logistics joined a growing list of shipping companies that permanently shuttered their businesses as the firm on Feb. 22 filed for Chapter 7 bankruptcy with plans to liquidate.

The Carlsbad, Calif., logistics company filed its petition in the U.S. Bankruptcy Court for the Southern District of California listing assets up to $50,000 and and $1 million to $10 million in liabilities. Court papers said it owed millions of dollars in liabilities to trucking, logistics and factoring companies. The company filed bankruptcy before any creditors could take legal action.

Lawsuits force companies to liquidate in bankruptcy

Lawsuits, however, can force companies to file bankruptcy, which was the case for J.J. & Sons Logistics of Clint, Texas, which on Jan. 22 filed for Chapter 7 liquidation in the U.S. Bankruptcy Court for the Western District of Texas. The company filed bankruptcy four days before the scheduled start of a trial for a wrongful death lawsuit filed by the family of a former company truck driver who had died from drowning in 2016.

California-based logistics company Wise Choice Trans Corp. shut down operations and filed for Chapter 7 liquidation on Jan. 4 in the U.S. Bankruptcy Court for the Northern District of California, listing $1 million to $10 million in assets and liabilities.

The Hayward, Calif., third-party logistics company, founded in 2009, provided final mile, less-than-truckload and full truckload services, as well as warehouse and fulfillment services in the San Francisco Bay Area.

The Chapter 7 filing also implemented an automatic stay against all legal proceedings, as the company listed its involvement in four legal actions that were ongoing or concluded. Court papers reportedly did not list amounts for damages.

In some cases, debtors don't have to take a drastic action, such as a liquidation, and can instead file a Chapter 11 reorganization.

Truck shipping products.

Shutterstock

Nationwide Cargo seeks to reorganize its business

Nationwide Cargo Inc., a general freight trucking company that also hauls fresh produce and meat, filed for Chapter 11 bankruptcy protection in the U.S. Bankruptcy Court for the Northern District of Illinois with plans to reorganize its business.

The East Dundee, Ill., shipping company listed $1 million to $10 million in assets and $10 million to $50 million in liabilities in its petition and said funds will not be available to pay unsecured creditors. The company operates with 183 trucks and 171 drivers, FreightWaves reported.

Nationwide Cargo's three largest secured creditors in the petition were Equify Financial LLC (owed about $3.5 million,) Commercial Credit Group (owed about $1.8 million) and Continental Bank NA (owed about $676,000.)

The shipping company reported gross revenue of about $34 million in 2022 and about $40 million in 2023.  From Jan. 1 until its petition date, the company generated $9.3 million in gross revenue.

Related: Veteran fund manager picks favorite stocks for 2024

Read More

Continue Reading

Uncategorized

Key shipping company files Chapter 11 bankruptcy

The Illinois-based general freight trucking company filed for Chapter 11 bankruptcy to reorganize.

Published

on

The U.S. trucking industry has had a difficult beginning of the year for 2024 with several logistics companies filing for bankruptcy to seek either a Chapter 7 liquidation or Chapter 11 reorganization.

The Covid-19 pandemic caused a lot of supply chain issues for logistics companies and also created a shortage of truck drivers as many left the business for other occupations. Shipping companies, in the meantime, have had extreme difficulty recruiting new drivers for thousands of unfilled jobs.

Related: Tesla rival’s filing reveals Chapter 11 bankruptcy is possible

Freight forwarder company Boateng Logistics joined a growing list of shipping companies that permanently shuttered their businesses as the firm on Feb. 22 filed for Chapter 7 bankruptcy with plans to liquidate.

The Carlsbad, Calif., logistics company filed its petition in the U.S. Bankruptcy Court for the Southern District of California listing assets up to $50,000 and and $1 million to $10 million in liabilities. Court papers said it owed millions of dollars in liabilities to trucking, logistics and factoring companies. The company filed bankruptcy before any creditors could take legal action.

Lawsuits force companies to liquidate in bankruptcy

Lawsuits, however, can force companies to file bankruptcy, which was the case for J.J. & Sons Logistics of Clint, Texas, which on Jan. 22 filed for Chapter 7 liquidation in the U.S. Bankruptcy Court for the Western District of Texas. The company filed bankruptcy four days before the scheduled start of a trial for a wrongful death lawsuit filed by the family of a former company truck driver who had died from drowning in 2016.

California-based logistics company Wise Choice Trans Corp. shut down operations and filed for Chapter 7 liquidation on Jan. 4 in the U.S. Bankruptcy Court for the Northern District of California, listing $1 million to $10 million in assets and liabilities.

The Hayward, Calif., third-party logistics company, founded in 2009, provided final mile, less-than-truckload and full truckload services, as well as warehouse and fulfillment services in the San Francisco Bay Area.

The Chapter 7 filing also implemented an automatic stay against all legal proceedings, as the company listed its involvement in four legal actions that were ongoing or concluded. Court papers reportedly did not list amounts for damages.

In some cases, debtors don't have to take a drastic action, such as a liquidation, and can instead file a Chapter 11 reorganization.

Truck shipping products.

Shutterstock

Nationwide Cargo seeks to reorganize its business

Nationwide Cargo Inc., a general freight trucking company that also hauls fresh produce and meat, filed for Chapter 11 bankruptcy protection in the U.S. Bankruptcy Court for the Northern District of Illinois with plans to reorganize its business.

The East Dundee, Ill., shipping company listed $1 million to $10 million in assets and $10 million to $50 million in liabilities in its petition and said funds will not be available to pay unsecured creditors. The company operates with 183 trucks and 171 drivers, FreightWaves reported.

Nationwide Cargo's three largest secured creditors in the petition were Equify Financial LLC (owed about $3.5 million,) Commercial Credit Group (owed about $1.8 million) and Continental Bank NA (owed about $676,000.)

The shipping company reported gross revenue of about $34 million in 2022 and about $40 million in 2023.  From Jan. 1 until its petition date, the company generated $9.3 million in gross revenue.

Related: Veteran fund manager picks favorite stocks for 2024

Read More

Continue Reading

Uncategorized

Tight inventory and frustrated buyers challenge agents in Virginia

With inventory a little more than half of what it was pre-pandemic, agents are struggling to find homes for clients in Virginia.

Published

on

No matter where you are in the state, real estate agents in Virginia are facing low inventory conditions that are creating frustrating scenarios for their buyers.

“I think people are getting used to the interest rates where they are now, but there is just a huge lack of inventory,” said Chelsea Newcomb, a RE/MAX Realty Specialists agent based in Charlottesville. “I have buyers that are looking, but to find a house that you love enough to pay a high price for — and to be at over a 6.5% interest rate — it’s just a little bit harder to find something.”

Newcomb said that interest rates and higher prices, which have risen by more than $100,000 since March 2020, according to data from Altos Research, have caused her clients to be pickier when selecting a home.

“When rates and prices were lower, people were more willing to compromise,” Newcomb said.

Out in Wise, Virginia, near the westernmost tip of the state, RE/MAX Cavaliers agent Brett Tiller and his clients are also struggling to find suitable properties.

“The thing that really stands out, especially compared to two years ago, is the lack of quality listings,” Tiller said. “The slightly more upscale single-family listings for move-up buyers with children looking for their forever home just aren’t coming on the market right now, and demand is still very high.”

Statewide, Virginia had a 90-day average of 8,068 active single-family listings as of March 8, 2024, down from 14,471 single-family listings in early March 2020 at the onset of the COVID-19 pandemic, according to Altos Research. That represents a decrease of 44%.

Virginia-Inventory-Line-Chart-Virginia-90-day-Single-Family

In Newcomb’s base metro area of Charlottesville, there were an average of only 277 active single-family listings during the same recent 90-day period, compared to 892 at the onset of the pandemic. In Wise County, there were only 56 listings.

Due to the demand from move-up buyers in Tiller’s area, the average days on market for homes with a median price of roughly $190,000 was just 17 days as of early March 2024.

“For the right home, which is rare to find right now, we are still seeing multiple offers,” Tiller said. “The demand is the same right now as it was during the heart of the pandemic.”

According to Tiller, the tight inventory has caused homebuyers to spend up to six months searching for their new property, roughly double the time it took prior to the pandemic.

For Matt Salway in the Virginia Beach metro area, the tight inventory conditions are creating a rather hot market.

“Depending on where you are in the area, your listing could have 15 offers in two days,” the agent for Iron Valley Real Estate Hampton Roads | Virginia Beach said. “It has been crazy competition for most of Virginia Beach, and Norfolk is pretty hot too, especially for anything under $400,000.”

According to Altos Research, the Virginia Beach-Norfolk-Newport News housing market had a seven-day average Market Action Index score of 52.44 as of March 14, making it the seventh hottest housing market in the country. Altos considers any Market Action Index score above 30 to be indicative of a seller’s market.

Virginia-Beach-Metro-Area-Market-Action-Index-Line-Chart-Virginia-Beach-Norfolk-Newport-News-VA-NC-90-day-Single-Family

Further up the coastline on the vacation destination of Chincoteague Island, Long & Foster agent Meghan O. Clarkson is also seeing a decent amount of competition despite higher prices and interest rates.

“People are taking their time to actually come see things now instead of buying site unseen, and occasionally we see some seller concessions, but the traffic and the demand is still there; you might just work a little longer with people because we don’t have anything for sale,” Clarkson said.

“I’m busy and constantly have appointments, but the underlying frenzy from the height of the pandemic has gone away, but I think it is because we have just gotten used to it.”

While much of the demand that Clarkson’s market faces is for vacation homes and from retirees looking for a scenic spot to retire, a large portion of the demand in Salway’s market comes from military personnel and civilians working under government contracts.

“We have over a dozen military bases here, plus a bunch of shipyards, so the closer you get to all of those bases, the easier it is to sell a home and the faster the sale happens,” Salway said.

Due to this, Salway said that existing-home inventory typically does not come on the market unless an employment contract ends or the owner is reassigned to a different base, which is currently contributing to the tight inventory situation in his market.

Things are a bit different for Tiller and Newcomb, who are seeing a decent number of buyers from other, more expensive parts of the state.

“One of the crazy things about Louisa and Goochland, which are kind of like suburbs on the western side of Richmond, is that they are growing like crazy,” Newcomb said. “A lot of people are coming in from Northern Virginia because they can work remotely now.”

With a Market Action Index score of 50, it is easy to see why people are leaving the Washington-Arlington-Alexandria market for the Charlottesville market, which has an index score of 41.

In addition, the 90-day average median list price in Charlottesville is $585,000 compared to $729,900 in the D.C. area, which Newcomb said is also luring many Virginia homebuyers to move further south.

Median-Price-D.C.-vs.-Charlottesville-Line-Chart-90-day-Single-Family

“They are very accustomed to higher prices, so they are super impressed with the prices we offer here in the central Virginia area,” Newcomb said.

For local buyers, Newcomb said this means they are frequently being outbid or outpriced.

“A couple who is local to the area and has been here their whole life, they are just now starting to get their mind wrapped around the fact that you can’t get a house for $200,000 anymore,” Newcomb said.

As the year heads closer to spring, triggering the start of the prime homebuying season, agents in Virginia feel optimistic about the market.

“We are seeing seasonal trends like we did up through 2019,” Clarkson said. “The market kind of soft launched around President’s Day and it is still building, but I expect it to pick right back up and be in full swing by Easter like it always used to.”

But while they are confident in demand, questions still remain about whether there will be enough inventory to support even more homebuyers entering the market.

“I have a lot of buyers starting to come off the sidelines, but in my office, I also have a lot of people who are going to list their house in the next two to three weeks now that the weather is starting to break,” Newcomb said. “I think we are going to have a good spring and summer.”

Read More

Continue Reading

Trending