Yearly Archives: 2022

Victoria Bautch on right with graduate student Danielle Buglak. Photo from UNC McAllister Heart Institute

By Daniel Dunaief

This is part two of a two-part series featuring Cold Spring Harbor Laboratory alums Joanna Wysocka, Robert Tjian, Victoria Bautch, Rasika Harshey and Eileen White. 

Often working seven days a week as they build their careers, scientists plan, conduct and interpret experiments that don’t always work or provide clear cut results.

Driven by their passion for discovery, they tap into a reservoir of ambition and persistence, eager for that moment when they might find something no one else has discovered, adding information that may lead to a new technology, that could possibly save lives, or that leads to a basic understanding of how or why something works.

Nestled between the shoreline of an inner harbor along the Long Island Sound and deciduous trees that celebrate the passage of seasons with technicolor fall foliage, Cold Spring Harbor Laboratory has been a career-defining training ground for future award-winning scientists.

Last week two alumni of Cold Spring Harbor Laboratory, Joanna Wysocka and Robert Tjian, shared their thoughts, experiences, and reflections on the private lab that was founded in 1890. This week the article continues with reflections from alumni Rasika Harshey, Victoria Bautch and Eileen White.

Confidence builder

Lunch time presented no break from science for Rasika Harshey, and that was just as she’d hoped.

Rasika Harshey

When she was at Blackford Hall between 1979 and 1983, first as a postdoctoral researcher and then as a staff investigator in the lab of Ahmad Bukhari, Harshey said conversations frequently included discussions about research. “It was wonderful,” she said. “It was just science, 24/7.”

Bukhari was studying a virus that infects bacteria, called mu, for mutator. The viral particle genome was jumping into the host genome. “At that point, transposable elements” of DNA were “entering into our consciousness,” Harshey explained.

In her research, Harshey would induce the virus and, 30 minutes later, get 100 phage particles. Looking in the cytoplasm, however, she didn’t find any of this viral DNA until phage progeny appeared about 50 minutes later. “How is that possible?” she asked. “I wanted to solve this mystery.”

Harshey spent countless hours in the electron microscope room, isolating DNA. She knew mu was replicating, or copying itself, but she couldn’t figure out how or what it was doing. She and Bukhari proposed a model about transposable elements at a meeting called “Movable Genetic Elements” in 1979 at CSHL that generated considerable discussion.

“It was thrilling at the time for me to develop as a scientist,” Harshey said. “It seemed to me that I was saying something and people were listening. I gained a lot of confidence in myself.” The work she did turned out to be only partially correct, but it gave her the sense that she could solve problems.

With CSHL as a backdrop, Harshey enjoyed the opportunity to attend meetings and to interact with other visitors and other scientists on campus. “It was a total immersion” she said. “Summers were magical, with so many meetings one could just walk into.”

Harshey visited Barbara McClintock’s lab, which was down the hall from hers. McClintock, who won the Nobel Prize in Harshey’s final year at CSHL, showed her the maize cells.

McClintock also invited her to her cottage, where she served what Harshey recalled was a “delicious” poppyseed cake.

She described McClintock as “quiet” and a “tough cookie.”

Rasika Harshey at CSHL.Courtesy of Cold Spring Harbor Laboratory Archives, NY.

Harshey thought it was inspiring to be with McClintock, Watson and Richard Roberts, who also won a Nobel Prize. She also appreciated the opportunity to visit with Guenter Albrecht-Buehler and Joseph Sambrook. “I was in and out of Richard Roberts’s lab all the time,” she said.

For her work, Harshey needed restriction enzymes, which Phyllis Myers produced. She had to “beg” Myers for these valuable enzymes that were in short supply.

Harshey felt an urgency to commit herself to her work. When she and her husband Makkuni Jayaram were expecting a baby, she didn’t share the news until it had become obvious. She worked until the last moment before the baby was born in 1982, “but I came back,” she said.

Harshey, who also calls CSHL “home,” described it as a “place time forgot. It’s quiet and beautiful and you can do and think and talk science.” Professor in Molecular Biosciences at The University of Texas at Austin in the College of Natural Sciences, Harshey is grateful for the career and the life she’s led. “A series of accidents got me here,” she said. “I can’t believe my good fortune, that I get to do what I get to do every day.”

As a part of the history of CSHL, Harshey appreciates a culture that she has carried forward in her career. The “deep joy, commitment, excitement for biology, particularly for designing experiments, and looking at a problem from all angles” was embedded into the approach scientists took to the work they did at the lab. 

She also believes the tradition at CSHL includes an “appreciation for how easy it is to get things wrong and to continually challenge your own ideas.”

Intense culture

Victoria Bautch came to Cold Spring Harbor Laboratory in the 1983 knowing that she was interested in studying aspects of developmental biology. When she saw the power of the new technology, she started working on genetically modified animals.

She was trying to figure out whether viral genes previously only linked to cancer by association could cause cancer when part of the genome was put into animals. When she inserted genes into a mouse’s DNA, some of these mice developed tumors in their blood vessels. She “didn’t know this was going to happen,” she said. “The type of tumor was a complete surprise.”

Bautch needed to know more about how blood vessels formed and functioned to understand these tumors. That’s what got her excited about studying these blood vessels. These blood vessel tumors “weren’t on my radar,” she said.

While working in the lab of Doug Hanahan, Bautch had the opportunity to interact with Judah Folkman, a Professor at Harvard University. Folkman was excited about the way these blood vessels were developing and encouraged Bautch to continue to work in this field. Folkman championed the idea that new blood vessel formation contributes to the progression of many types of tumors. He was eager to bring new people and technologies into the field.

Bautch also met mouse geneticists Nancy Jenkins and Neal Copeland who were at Jackson Labs at the time and were instrumental in her career progression. She started asking basic questions about how blood vessels forms and how they function.

Folkman was looking to “bring people into the field that had more of a basic science and molecular biology background,” Bautch said. He was hoping to add researchers who would use the new tools to understand blood vessel basics and how they are involved in tumors.

The tumor Bautch worked on was an “entree into the bigger field of blood vessels and vascular biology,” she said.

Cold Spring Harbor Laboratory provided a constructive backdrop for the work Bautch did that proved important in her career. “I was looking for an intense and very high caliber scientific environment and I feel like I found it,” she said.

Indeed, Bautch often worked seven days a week, starting at 10 or 11 in the morning and ending around 1 or 2 in the morning. During the later hours, she had an easier time accessing machines and equipment that others in the lab also needed.

Like Harshey, Bautch has her own McClintock story. “She always would say, ‘Look at your organism very carefully.’ You could learn so much from observing.”

At the time, McClintock’s advice seemed “antiquated” to Bautch, especially with researchers doing molecular biology that was more of a technological breakthrough, but now appreciates the guidance. “A really important piece of being a scientist is being observant,” she  explained.

Bautch said other scientists were prepared to offer their responses to her work. “People were always telling you what they thought, whether you wanted it or not,” she recalled. 

Now a Distinguished Professor of Biology and Co-Director of the McAlister Heart Institute at UNC Chapel Hill, Bautch recalls her time at CSHL as a combination of a “very intense life experience as well as science experience.” As for her hopes for the current crop of scientists at CSHL, Dr. Bautch hopes this generation is “more inclusive.”

An alternate  explanation of cancer

Around the same time that actress Heather Locklear was telling TV audiences about Faberge Organics Shampoo about how people can tell two friends about the shampoo who then tell two friends, researchers knew that a type of gene that promoted cancer did essentially the same thing.

Eileen White. Photo courtesy of Rutgers Cancer Institute of New Jersey

Called an oncogene, these genes caused cells to continue to divide and, as the shampoo commercial suggested “and so on and so on and so on.” Back then, scientists focused on the role oncogenes played in cell proliferation, which, with cancer, involved the runaway copying of itself.

A graduate of Smithtown High School who earned her PhD at Stony Brook University, Eileen White joined Bruce Stillman’s lab as a post doctoral fellow at Cold Spring Harbor Laboratory in 1983. After three years, White became a staff investigator, making the beginning of career-defining discoveries about the development of cancer.

“We knew that certain viruses cause cancer, and we knew that these viruses encoded oncogenes,” said Dr. White. “The whole idea was to understand how.”

Indeed, viral oncogenes, which are small and less complicated than tumor genomes, presented the opportunity to find a shortcut to understand how cancers developed in humans. Even if the human oncogene is small, the genome it sits in is huge, which is not the case of a viral oncogene that sits I a very small viral genome, she explained.

Using a DNA tumor virus that promoted cancer, White discovered that this gene prevented apoptosis, or programmed cell death. After this discovery, which she said she could “see with her own eyes” when she studied the effect of the genes on cells, she asked herself what she’d need to do to push the idea forward for this paradigm shift in thinking about cancer.

As she continued to discover more details about the viral oncogene over the years, she said other researchers discovered that the Bcl-2 human oncogene may function similarly.  “I thought, ‘Well, if this is a theme that viral oncogenes and potentially cancer oncogenes are blocking apoptosis, they should be functionally interchangeable,’” White recalled, which is what she showed and published. 

She substituted human Bcl2 oncogene of the viral E1B 19K oncogene and showed that they both functioned to block apoptosis interchangeably.

Courtesy of Cold Spring Harbor Laboratory Archives, NY.

These discoveries, which started at Cold Spring Harbor Laboratory, among others, helped pave the way for Dr. White’s career, where she is now professor of Molecular Biology and Biochemistry and Deputy Director at the Rutgers Cancer Institute of New Jersey. She is also Associate Director of the Ludwig Princeton Branch of the Ludwig Institute for Cancer Research at Princeton University.

The discovery also led to some anti cancer treatments. Abbott developed the first FDA approved Bcl-2 inhibitor, which others followed.

These kinds of discoveries, which lead to treatments, are why she and others “work so hard, to make a difference for patients,” she said.

Dr. White describes her time at CSHL as an “enormously enriching experience” in which she was surrounded by people who were of “exceptional scientific caliber,” including some who won the Nobel Prize while she was there.

“I had a fertile environment with people that had similar ways of thinking that was very synergistic in terms of propelling the science forward,” she said.

She appreciated the numerous meetings held at CSHL at which she felt like she could learn about anything from the depth and breadth of the material presented and discussed. During these meetings, which she still attends regularly, she has recruited post doctoral researchers to her lab whom she’s met at poster sessions.

As with other alumni of CSHL, Dr. White was particularly pleased with the robust and valuable feedback she and others received. “Critical and productive insights from the scientific community is important to the process of scientific discovery from beginning to the end,” she explained.

White suggested that the layout of the campus and the proximity of so many families created a unique and tight knit community. She recalled how the lab had Santa Claus at Christmas, hay rides to the pumpkin patch and special dinners for people who lived there.

“That very much builds camaraderie and long term friendships and long term relationships,” she said.

Louis. Photo from Town of Smithtown

MEET LOUISE!

This week’s shelter pet is Louise, a 7-year-old tabby cat currently up for adoption at the Smithtown Animal Shelter.  

Louis. Photo from Town of Smithtown

This petite beauty is as outgoing and loving as they come. Found as a stray by a Good Samaritan in July, Louise was looking for love (and food) the second she arrived at the shelter. 

This little lady has advanced kidney disease so she may have months or just a year or two, but it will be packed with love and affection. 

If you would like to meet Louise, please call ahead to schedule an hour to properly interact with her in a domestic setting.

The Smithtown Animal & Adoption Shelter is located at 410 Middle Country Road, Smithtown. Visitor hours are currently Monday to Saturday from 10 a.m. to 3 p.m. (Sundays and Wednesday evenings by appointment only). For more information, call 631-360-7575 or visit www.townofsmithtownanimalshelter.com.

A pint of beer. Pixabay photo

By Bob Lipinski

Bob Lipinski

Although there are dozens of styles of beer produced globally, the most commonly consumed are those labeled “lager” and “ale.” Within these two categories are many lesser-known styles, some hundreds of years old that are well worth searching out. Eight that I recommend are:

Altbier (Germany): “Alt” refers to the “old” style of brewing (i.e., using top-fermenting yeast) that was common before bottom-fermenting lager brewing became popular in the mid-eighteenth century. They are copper-colored ales with a high barley and hops content. The traditional style of beer found in brewpubs in Münster and the Altstadt (“old town”) section of Düsseldorf.

Gose (Germany): An old-style beer that originated in the Middle Ages in the town of Goslar on the Gose River in Lower Saxony (Sachsen). Gose is a highly carbonated, tart, and fruity wheat ale with a citrusy, tangy, and salty flavor, low in bitterness with hints of coriander.

Kölsch (Germany) Light gold-colored ale brewed since the Middle Ages, but the beer now known as Kölsch was developed in the late 1800s. It is dry with a very subtle tart fruit and hop character. Kölsch is an appellation protected by the Kölsch Konvention (1986) and is restricted to the 20 or so breweries in and around Cologne (Köln).

Lambic (Belgium): A family of spontaneously fermented ales generally brewed near Brussels. They are often aged up to three years in barrels. Some ingredients added during the brewing process are brown sugar, cranberries, peaches, raspberries, sour cher¬ries, and wheat. Most of the beers are winy, distinctively sour, and somewhat acidic, almost resembling vermouth rather than beer. Some examples of lambic beers are Faro, Framboise, Gueuze, and Kriek.

Gueuze (Belgium): A lambic-type ale made by mixing one, two, and three-year-old lambic beers. It is moderately sour, acidic, and highly effervescent with aromas of apple, rhubarb, and leather.

Kriek (Belgium): A lambic-type ale that has been further fermented by adding sour or bitter black cherries to produce a dry beer with an unusual cherry flavor. Some similarity to a kir royale.

Rauchbier (Germany): An amber to dark-colored lager beer, with a smoky, bacon-like aroma and flavor. It is brewed by adding malt that was dried over smoking beechwood, before being brewed, making it intensely smoky. It is brewed in the city of Bamberg, in Franken.

Saison (Belgium): Translates to season. A sharply refreshing, amber-colored, summer seasonal ale that is fruity, moderately bitter, and has a slightly sour taste. It is brewed in Wallonia, the French-speaking part of Belgium.

Bob Lipinski is the author of 10 books, including “101: Everything You Need To Know About Whiskey” and “Italian Wine & Cheese Made Simple” (available on Amazon.com). He consults and conducts training seminars on Wine, Spirits, and Food and is available for speaking engagements. He can be reached at www.boblipinski.com OR [email protected].

File photo by Heidi Sutton/TBR News Media

Staff shortages, a growing issue nationally, have made their way to the Village of Port Jefferson.

Earlier this month, the Port Jeff Village Board of Trustees accepted the resignation of Joe Palumbo, the village administrator. This departure comes on the heels of various other vacancies throughout the village government.

Public sector staffing shortages are not unique to Port Jefferson. Americans are voluntarily quitting their jobs at record numbers, likely compounded by the COVID-19 pandemic and its disruptive effects on the workforce. Climbing quit rates nationwide have given rise to a phenomenon called the Great Resignation. 

In an exclusive interview, Mayor Margot Garant gave her thoughts on the issue of staff shortages, outlining the challenges of keeping positions filled.

Mayor Margot Garant, above. Photo from Port Jeff Village website

‘The challenge we have in general when filling these positions, of course, is competing with the private sector.’ — Margot Garant

“The challenge we have in general when filling these positions, of course, is competing with the private sector, which is allowing for a much more flexible work environment,” she said. 

Garant said the recent departures from the village government are out of her control. The private sector often offers higher pay with a better work-life balance. 

“We cannot do a work-from-home program because people are bound to the collective bargaining agreements, which doesn’t give us that flexibility,” the mayor said.

The civil service system also imposes a set of strict criteria that complicates the staffing of small municipalities, according to Garant. To remediate these concerns, the administration has emphasized hiring and promoting internally, and dispersing responsibilities between multiple offices, a maneuver Garant said can save time and energy.

“Right now, we’re looking to absorb some of the responsibilities of the village administrator between Barbara Sakovich, our clerk; the treasurer’s office; Kevin Wood, who’s in charge of all our technology; and Rich Harris in the Building Department,” Garant said, adding, “We are also bringing on a new deputy clerk. … That is an appointed position, and we’re thrilled to have that happen because she knows us, she’s a resident and it’s a promotion from within.”

Village resident Ana Hozyainova closely followed the issue of staffing shortages during her recent candidacy for trustee. In an interview, she criticized consolidating multiple responsibilities to a single person, arguing that this practice leads to conflicting obligations and confusion for village employees.

“The head of the [building] department, who resigned in March, was replaced with a temporary person who shares a prosecutorial role in the village administration,” she said. “To me, these two positions should not be combined because one role is a prosecutor who addresses negligence or incompatibility with the code, and the other helps to resolve those things.”

Hozyainova said that a growing number of vacancies on various boards are also causing concern, adding that she is most alarmed by the vacancies in the Building Department.

“The Building Department provides permits and helps the village residents and businesses navigate the building code,” she said. “There is no plan reviewer at the moment, no senior planning person, and these are essential positions that help interface between the businesses, the residents and the government.”

Hozyainova believes there may be unnecessary delays for residents and business owners if these positions remain unfilled: “When there’s a lack of those positions on a permanent basis, the communications start to break down and the permitting process is extended unnecessarily.”

Hozyainova fears staffing shortages will result in two principal consequences: a lengthier permit application process and rising costs.

“At the moment, many of the plans are being sent to an external agency for review,” she said. “An external agency generally costs more than an internal agency.” With too many transient agents, she also believes there is less institutional memory within village government, which can be exhausting for permit applicants.

Garant presented a contrasting judgment, stating that the critical positions within her administration are in place. With these spots filled, she maintains that there will still be an effective administration and delivery of village services. 

In areas where diminished services may be of concern, the mayor said outside consultancy firms can operate as a “stopgap” at a reasonable expense to the taxpayer.

“We’re very careful not to give them carte blanche,” Garant said. “Usually, we’re very conscious of making sure that compensation does not exceed the amount we would be spending on the individual employee.” She added, “Nine times out of 10, we’re actually saving money because we’re not responsible for the benefits package for the outside consultant.”

On the whole, Garant suggests difficulties staffing a small municipality are inevitable given growing nationwide economic uncertainty.

Despite a few job openings, local school districts are ready for the new school year. Stock photo

With schools across the nation facing issues filling positions, including vital teaching jobs, local school districts, for the most part, are looking toward the new academic year in a good position with staffing.

While COVID-19 created severe obstacles for schools in the last couple of years, local districts are moving past them.

Some difficulties

Kevin Scanlon, the new Three Village Central School District superintendent, said the district is among those well staffed regarding teachers. Slight shortages involve jobs such as teaching assistants and monitor positions. Substitutes for teaching and various openings, including custodial, are also hard to find. Scanlon said that with more than 500 teachers in the district, 30 to 50 of them could be out on any given day.

Neil Katz, Smithtown Central School District assistant superintendent for personnel; Jim Polansky, Huntington school district superintendent; and Roberta Gerold, Middle Country Central School District superintendent, all said their districts are in the same position with permanent teaching positions being filled, but there are small issues finding noncertified employees.

Routinely, it can be challenging also to find candidates in the fields of English as a New Language, family and consumer sciences, technology and language classes. Scanlon added that it’s difficult to find certified American Sign Language educators. 

“Also, business teachers, which is unusual because 25 years ago you probably had your choice of teachers,” he said. “Some of the local colleges in New York also used to produce 120 candidates a year in tech teachers, now they’re producing maybe 12 to18. So, the numbers are quite short of where they were years ago in those specialized areas.” 

Scanlon added finding such teachers is even more difficult than finding math and science teachers.

“We are all competing against each other trying to find them,” he said.

Polansky said, from time to time, there can be last-minute resignations at the end of the summer.

“Those can present issues, but those are few and far between, and sometimes if you have an added aide position that comes up due to class formation, that doesn’t take place until late in the summer,” he said.

Gerold said, “One of the many byproducts of the pandemic has been a smaller pool of applicants, which has impacted the Middle Country school district’s ability — as it has school districts across Long Island and the country — to hire talented educators.”

Like other districts, Middle Country found ways to ensure it was properly staffed.

“While the hiring process has been particularly challenging heading into this school year, our human resources and personnel teams have worked hard to creatively find new solutions to attract the next generation of educators to lead our community into the future,” she said. 

There has also been a need to stay proactive regarding teacher retirements. While student enrollment has declined in some local districts, the number of teachers retiring has increased.

Katz said the number of employees currently retiring makes sense as the population was growing in the area 25 to 30 years ago and schools were expanding, which led to the need to hire more teachers at the time. Those employees are now meeting their retirement requirements.

“We’re hitting that point that there’s this balloon of the number of teachers that are eligible for retirement,” Katz said, adding COVID-19 exacerbated the problem in recent years.

Polansky agreed.

“You’re going to see more in the next couple of years because it is kind of generational,” he said. “That’s another thing that we need to take into account.”

According to New York State Teachers’ Retirement System, 33% of active members could potentially retire in the next few years.

Solutions

Some news outlets have reported states such as Florida dropping the requirements for people to secure a teaching position such as having a bachelor’s degree. Polansky said, “There’s a fine line between helping your teacher availability and compromising quality. You don’t want to be in a situation where actions are being taken that actually lessen the quality of the educator that’s in front of your children in the classroom.”

He added that such a move could cause more problems in the long run.

“We have to make teaching a desirable profession,” he said. “There are a couple of ways to do that, and it’s incumbent upon states and local school districts to make that happen.” 

Administrators said their districts always start the hiring process early in the calendar year to prepare for the first day of school, attending recruitment events at colleges in New York state, hosting their own career fairs and placing ads in papers.

Scanlon said the Three Village school district will run an ad in The New York Times at the end of January or early February. He added that advertising in the paper is something many high-caliber schools do. Looking toward the future, the superintendent said there are talks about bringing back a Future Teachers of America club to the high school to encourage students to choose teaching as a career.

Gerold said one of the Middle Country school district’s “initiatives has been our successful partnership with Stony Brook University to fortify our roster of substitute teachers. During the pandemic, the district partnered with Stony Brook University to place student-teacher substitutes in schools. Through this, we’ve been able to satisfy the substitute teacher needs throughout the district and identify strong educators who are poised to excel in leading classrooms.”

Katz said the Smithtown Central school district tries to reach out to different associations and offer more competitive salaries. However, even using various hiring methods and starting early, sometimes a new hire will get a better offer right before the academic year begins.

“We’re getting into bidding wars,” he said. “Candidates are pushing one district against the other in bidding wars. Kind of like the housing market.”

Despite a few job openings, local school districts are ready for the new school year. Stock photo

by -
0 1201

After being vacant for nearly a year, 93 Main St. in Stony Brook Village Center will be filled with the aroma of food once again.

The location that was once occupied by Pentimento Restaurant will now house Luca restaurant. Specializing in modern Italian cuisine, it’s set to open on Aug. 30, serving dinner Tuesday through Sunday. In the fall, the owners plan to also open for lunch.

“Luca will be a great addition to the center,” said Gloria Rocchio, president of Stony Brook Village Center in a press release. “Their modern Italian cuisine is superb and brings an exciting new style to the area.”

David Tunney, who grew up in Setauket and graduated from Ward Melville High School, is one of the partners along with Rory Van Nostrand, Anthony Argiriou and chef Luke DeSanctis. Tunney, pictured on the front page second from right, has been in the restaurant industry for nearly 40 years. In 2019, he bought the former Raga Indian restaurant on Old Town Road and turned it into Old Fields Barbecue, now renamed Old Fields Tavern. In addition to the Setauket and Stony Brook spots, he  owns Old Fields restaurants in Port Jefferson and Greenlawn, and Old Fields Barbecue with Ella’s in Huntington. He is also one of the founders of the Besito Restaurant Group along with his brother John and co-owner of Besito Mexican restaurants in Huntington and Roslyn.

A reception at Luca was held Aug. 18 to give invitees a sneak peek at the new place. Those in attendance included members of the Three Village Chamber of Commerce, The Ward Melville Heritage Organization trustees, elected officials and more.

The night included a sample of appetizers and cocktails with invitees enjoying the modern interior of the restaurant and bar area as well as an outdoor dining area. Tunney said he and his partners envisioned the look of Luca even before construction began earlier this year.

The restaurateur was involved with construction and setting up the new place, including driving upstate with a U-Haul to pick up decorative columns made of red pine trees that were hand-peeled, cut and treated. 

Tunney said it’s nice owning restaurants in his former hometown and seeing familiar faces. Luca will seat 80 to 90 people, and he said the dining experience will include a four-course menu, which he described as a great value, but food can also be ordered a la carte.

Tunney and his partners are currently working on a few finishing touches before the restaurant opens for dinner on Aug. 30.

For those who plan to dine at Luca, Tunney said they promise “exceptional service, amazing food, a great vibe and a beautiful atmosphere.”

This rendered image of the brain via a technique called diffusion tractography reveals parts of the brain’s white matter in a compilation of WTC responders experiencing cognitive impairment (CT). These areas depicted by various colors illustrate where the brain is more vulnerable to neurodegenerative processes. The different colors represent differences in the heath of various parts of the brain including the limbic system. Credit: Chuan Huang
Stony Brook-led imaging study sheds light on PTSD-associated mental decline

A study that assessed the brains of 99 World Trade Center (WTC) responders by using diffusion tractography, a 3-D imaging technique, showed that WTC responders with cognitive impairment (CI), a possible sign of dementia, and post-traumatic stress disorder (PTSD), have a different presentation of the white matter in their brains compared to responders with CI without PTSD. Led by researchers at Stony Brook University affiliated with the Stony Brook WTC Health and Wellness Program, the study suggests a specific form of dementia could be affecting WTC responders who also have PTSD. The findings are published early online in the Journal of Alzheimer’s Disease.

According to the authors, this is the first study to examine white matter alterations using connectometry in a sample of WTC responders in mid-life (average age: 56) with and without concurrent PTSD. The goal of the study was to examine and elucidate the extent to which white matter tract integrity might be impaired in WTC responders with CI and/or PTSD. Previously, the researchers had identified changes in white matter diffusivity in small numbers of responder patients.

“Our findings are by no means conclusive in terms of defining CI or dementia in WTC responders, and if this study provides evidence of a new form of dementia emerging,” says Sean Clouston, PhD, lead author and Associate Professor in the Program in Public Health, and in the Department of Family, Population, and Preventive Medicine at Stony Brook University.

“Overall, the study supports the view that responders with CI have neurological changes consistent with neurodegenerative disease, but they are inconclusive as to the type of disease,” he adds. “Our findings do show that dementia due to PTSD is clearly different from non-PTSD dementia in this responder population.”

Subjects in the study were matched by age, gender, occupation, race and education. Cognitive status was determined by using the Montreal Cognitive Assessment, and PTSD status was determined by using the Diagnostics and Statistics Manual-IV. The researchers used diffusion tensor imaging via a mMR scanner, and they used connectometry to examine whole-brain tract level differences in white matter integrity as reflected by fractional anistrophy (FA) values.

In summary, the team found that FA was negatively correlated with CI and PTSD status in the fornix, cingulum, forceps minor of the corpus callosum, and the right uncinate fasciculus. Additionally, FA was negatively correlated with PTSD status, regardless of the CI status in the superior thalamic radiation and the cerebellum.

The authors conclude that the brain imaging results “suggest that WTC responders with early-onset CI may be experiencing an early neurodegenerative process characterized by decreased FA in white matter tracts.”

The technique and other findings

Clouston and colleagues used the imaging technique diffusion tractography to examine how healthy axons are in the brain’s white matter. The technique helped to determine that responders with CI had signatures in their white matter that did not match patterns seen in old-age Alzheimer’s disease and other related dementias.

By using the imaging technique, they also compared responders with PTSD and dementia to those with dementia but without PTSD. The imaging revealed a lot of similarities between the groups but also showed a remarkable difference in the white matter of those with PTSD and dementia – showing evidence of cerebellar atrophy, a finding that is inconsistent with other studies of dementia.

The research for the study was supported in part by the National Institutes of Health’s National Institute on Aging (grant # R01AG049953), and the Centers for Disease Control and Prevention (grant # U010H011314) and the National Institute for Occupational Safety and Health, NIOSH, (grant # 200-2011-39361).