WPRC appoints new associate directors
Steven Knable leads Center Operations
Steve Knable, M.B.A., began Aug. 1 as Associate Director for Operational
Services, to succeed Robert Watson, B.S., who plans to retire next summer
after 32 years of service.
Knable brings over 25 years experience in research administration and
business development within the non-profit research sector, as well as
in university sponsored research. Most recently he served as Vice President
for Finance at the National Opinion Research Center (NORC) at the University
of Chicago. During his term at NORC, he was instrumental in expanding
annual research funding from $30 million to $55 million per year.
Knable has set two broad objectives for the Primate Center: 1) Position
and restructure Operational Services to better address pending growth in
research and service programs; and 2) Develop and execute an aggressive
fund raising initiative to expand research infrastructure and maintain
the Center’s world class research environment. Operational Services includes
Financial Management, Human Resources, Data Management and Digital Imaging,
Grant Administration, Purchasing, and Facilities Management.
Amy Usborne manages Research Services
Amy Usborne, D.V.M., Diplomate A.C.V.P., assumed the responsibilities
of Associate Director for Research Services July 1. Joseph Kemnitz, Ph.D.,
had been serving in this capacity since 1995.
Dr. Usborne will oversee activities in the seven service units of Pathology,
Assay, Immunology, Library and Information, Reproduction Research, Stem
Cell, and Virology Services. She brings new energy and fresh ideas to developing
and coordinating these services. She will focus on assisting unit
heads in fufilling stated goals in the recent grant renewal, and on aiding
the development of increasingly sophisticated technologies required by
investigators.
Usborne will continue as head of the Pathology Services Unit, a position
she assumed in 2002, succeeding James Thomson, V.M.D., Ph.D.
New hope for PCOS
treatment, prevention
Millions of women with polycystic ovary sydrome (PCOS), a complex
and dangerous disease, may soon see better diagnosis and treatment.
Researchers in the U.S. and United Kingdom believe they have pinned
down when and how PCOS originates. Reporting in today’s issue of Journal
of Endocrinology, the researchers explain how prenatal genetic, biochemical
and environmental factors combine to produce PCOS later in life. The disorder
affects at least 4 million women of childbearing age in the U.S. It is
a common, but complex reproductive disorder and a major cause of infertility.
PCOS is also the leading cause of Type 2 diabetes in women in their 20s
and 30s and puts women at high risk for cancer in the uterus. (More
at www.primate.wisc.edu/WRPRC/press.html)
Seminar Series underway
The WPRC Fall 2002 Seminar series got off to a great start. Topics
included stem cells, AIDS, Harry Harlow, and zoo veterinary medicine. Please
help us make Spring just as successful! Send your suggestions, or better
yet, volunteer as a speaker for the Primate Center Spring Seminar Series.
We need at least one speaker per month from January through May, 2003.
Also, if you are not on the Seminar Series e-mail list, please let your
Centerline editor know (jlenon@primate.wisc.edu).
New enrichment forum
The Primate Enrichment Forum (PEF) is hosted by the Wisconsin Primate
Research Center via Primate Info Net. PEF is an e-mail list devoted to
discussion of social and environmental enrichment for laboratory housed
primates. The list is open to people who directly care for and do research
with nonhuman primates in biomedical facilities. Animal caretakers, veterinary,
research, and behavioral technicians, veterinarians, research scientists,
behaviorists/enrichment coordinators, and colony managers are all encouraged
to apply by visiting the Primate Enrichment Forum’s new Web site at www.primate.wisc.edu/pin/pef/>www.primate.wisc.edu/pin/pef/>
and clicking on the link to the application form. For more information,
you may also write the list administrator, David Seelig, Ph.D.; dseelig@vet.upenn.edu>dseelig@vet.upenn.edu.
Hats off to our students
Former student Michelle Jost, B.S., sent a letter Sept. 6 that well demonstrates
what the Primate Center experience has meant to many UW-Madison students
pursuing their science careers. Michelle, who graduated last December,
used to work for Doug Cowley "in the basement and the third floor of one
building in the back corner of the complex."
Thank you, Michelle, for your caretaking, preparing of snacks and toys,
feeding, and daily monkey health checks. I remember you coming to us as
a freshman psychology major. After your first Primates and Behavior class,
you were so excited by what you learned, you marched straight down to the
Primate Center and asked if you could work here. Your spirit, and that
of many other students we have met over the years, is unforgettable.
Sept. 6, 2002
Dear Jordana,
I have since moved back to the East Coast to work at the international
nonprofit Earth-watch. I am a coordinator for 24 research projects
in our Earth and Marine Science department. I work mainly with the volunteers
(about 1,100/year) who pay a share of the research grant to work with the
scientists in the field. I have become interested in marine science, but
the primatology interest is still there, so Earthwatch put a chimpanzee
project under my care. I am working with Roger and Debbie Fouts as well
as Mary Lee Jensvold over at the Chimpanzee and Human Communication Institute
at Central Washington University. We send volunteers there regularly to
help with general caretaking and beha-vioral observations.
They are trying to determine the best enrichment methods for apes in
captivity and the volunteers have been coming back with rave reviews. Included
among the four chimps is Washoe, most famous for learning sign language
and featured extensively in Roger’s book, Next of Kin. We also have a project
in Sri Lanka studying temple-dwelling macaques. The projects are usually
two weeks long and we often have discounts for college students.
I wanted to check in and say hello and also give you the heads up that
this kind of experience exists for anyone else who may come to you for
information …I am so happy to be working here with the volunteers, the
researchers, and the staff. The best perk of the job is the occasional
site visit in the field. I just returned from our whale sharks project
in Baja, where I gathered bio data from the sharks and collected plankton
samples for two weeks in the gorgeous Bahia des Los Angeles. I feel lucky
to have this position and I’m so proud to be a part of the organization.
Please give my best to everyone at the Center!
Michelle Jost
Expedition Coordinator, Earth and Marine Sciences
www.earthwatch.org
Maynard, Massachusetts
Gleanings
New grants
David Abbott, Ph.D., is one of four principal investigators on a five-year,
$5.6 million NIH grant to Northwestern University for a Specialized Center
of Research Excellence on Sex and Gender Factors Affecting Women’s Health.
The center will focus on "Genes, Androgens and Intrauterine Environment
in Polycystic Ovary Syndrome." The other PIs are Drs. Andrea Dunaif, Margrit
Urbanek and Jon Levine of Northwestern University. Abbott’s project, "Fetal
androgen induces ovarian, LH and beta-cell defects," will use the PCOS
rhesus monkey model at the WPRC. Co-investigators with Abbott are Drs.
Joe Kemnitz (WPRC), Alice Tarantal (California Primate Research Center),
Vasantha Padmanabhan (University of Michigan), and consultants Drs. Daniel
Dumesic (Mayo Clinic), Alan Conley (UC-Davis) and Ian Bird (Ob/Gyn). Levine’s
project will also use WPRC rhesus monkeys, in collaboration with investigators
Abbott and Ei Terasawa, Ph.D.
Eva Rakasz, Ph.D., Immunology Services head, has received a one-year
Great Lakes Regional Center for AIDS Research (CFAR) developmental
award. The grant is titled, "IgG Fc domain containing proteins as mucosal
vaccination vehicles."
Catherine VandeVoort, Ph.D. (California National Primate Research Center),
Dee Schramm, Ph.D. (WPRC), and Stanley Leibo, Ph.D. (Audubon Center for
Research of Endangered Species, LA), have received a five-year NCRR grant,
"Protocols for maturing and freezing monkey oocytes."
Honors
Ned Kalin, M.D., received the 2002 Wisconsin National Alliance for Mental
Illness Award in April for his ongoing research into developing a better
understanding of severe mental illness.
Joseph Kemnitz, Ph.D., has been elected Secretary Treasurer of the Biological
Sciences Section of the Gerontological Society of America, for 2002-2005.
In the news
Steve Clark, Ph.D., UW associate professor of human oncology, and Jordana
Lenon, B.S., B.A., WPRC, were featured in the Fond du Lac Reporter Oct.
15. The two gave presentations to kick off a three-day symposium, "Stem
cell research: Ethical implications of the new biology" at Marian College.
Also presenting were the Rev. Dr. Kevin Fitzgerald, professor of Catholic
health care ethics at Georgetown University in Washington, D.C., Dr. Lawrence
Hurwitz, medical director of Lakewood Care Center and Jewish scholar; and
Dr. Arthur Derse, director of Medical and Legal Affairs for the Medical
College of Wisconsin-Milwaukee.
Robert Freedman, Ph.D., described his research on menopausal hot flushes
in the New York Times Sept. 3. Freedman is a professor of psychiatry and
OB/GYN at Wayne State University in Detroit and a WPRC affiliate researcher
studying menopause on rhesus monkeys.
On Aug. 30, ABC News Prime Time aired the special, "Looking Younger,
Living Longer: What Every Woman Wants to Know." Richard Weindruch, Ph.D.,
and Center monkeys appeared on the program. Weindruch and Joe Kemnitz,
Ph.D., also spoke on aging and caloric restriction with Channel 27 Local
News in July.
Optomen Productions from London visited David Abbott, Ph.D., and Nancy
Schultz-Darken, Ph.D., July 19. The TV crew collected footage for a science
documentary to air in the UK and on the National Geographic Channel addressing
Dr. Nikhil Dhurandar’s research with WPRC scientists on a suspected obesity
virus that affects primates. The team has used rhesus and marmosets at
the Center to demonstrate that AD-36 injected into primates causes obesity.
David O’Connor, Ph.D., in the Watkins lab, is helping raise AIDS awareness
in Wisconsin:
--O’Connor was a guest columnist in the Wisconsin State Journal July
21, penning, "New AIDS treatment is still no substitute for education,
prevention." He appeared on Channel 27 local news the same week.
--He was featured Oct. 25 in Wisconsin Public Television's WeekEnd
report on AIDS Walk participants and raising political support for fighting
AIDS. O’Connor explained that, because ongoing research has revealed new
roadblocks to an HIV vaccine, there is an heightened need for education
and prevention, especially in young people. Teens and young adults represent
the highest rate of new HIV cases in the state, yet this group has also
become the most complacent about the virus.
UW Life Sciences Communication students Charles Youngquist, Chrissy
Micke, Shawn Marchand and Paul Vogelman produced the aforementioned AIDS
report. In addition to O’Connor, the group was assisted at the WPRC by
Deborah Barnett, Ph.D. (who is married to Youngquist). WeekEnd co-anchor
Patty Loew is an assistant professor teaching video documentary production
at the UW. The WeekEnd/UW partnership is supported in part by a grant from
the Morgridge Center for Public Service.
AP World Politics ran a story titled, "Yeast experiments challenge scientists’
notions about aging" July 17. Rick Weindruch, Ph.D., was quoted in the
story, which focused on the role antioxidant vitamins and supplements may
play in the aging process. Researchers at MIT led a recent study, published
in Nature, which may challenge traditional notions that free radicals play
a central role in aging and longevity.
New staff
Animal Services
-Mary Bruno, LAT1, May 29.
-Steve Cleary, LAT Supervisor, Dec. 2.
-Katherine Ellenbolt, LAT Supervisor, Dec. 2
-Xavier Guadalupe, Lab Animal Tech I, Sept. 23.
-Dustin Lafore, LAT1, May 16.
-Meagan Lefervre, Lab Animal Tech I, Aug. 19.
-Chris Luethy, colony manager, Aug. 19.
-Karla Potratz, LAT1, May 29.
-Ed Steele, Lab Animal Tech I, Aug. 26
-Shawn Thiele, Lab Animal Tech I, Aug. 21
Business Office
Susan Baculik, payroll and benefits specialist 3, Oct. 7.
Library and Information Services
-Angela Andres, serials assistant, July 29.
-Sean Flannery, library services assistant, Sept. 19.
Pathology Services
-Sheree Beam, research associate, Sept. 3
Virology Services
-Angela Schoolmeesters, associate research specialist, Sept. 9.
-Laura M, Schorrak, associate research specialist, June 17.
Kemnitz Lab
-Jamie Barger, Ph.D., postdoctoral trainee, Sept. 1.
Golos Lab
-Edith Breburda, D.V.M., Ph.D., research associate, Aug. 1.
Thomson Lab
-Erika Reinfried, B.S., associate research specialist, July 15.
-Kristopher Murphy, B.S., associate research specialist, Aug. 5.
-Karthik Ramachandran, project assistant, Sept. 3.
Terasawa Lab
-Erin Carmody, research assistant, Aug. 1.
-WooRam Kim, research assistant, June 17.
-Hideki Abe, research associate, Oct. 14.
Watkins Lab
-Judith Peterson, project assistant 3, Sept. 8.
-Shari Piaskowski, B.S., research specialist, July 15.
-Christi Wojewoda, B.S., assoc. research specialist, June 17.
-Levi Yant, B.A., M.A., research specialist, July 29.
Departures
-Pam Tannenbaum, Ph.D., research associate, Aug. 30.
-Michael Wolfgang, Ph.D., research assistant, Golos lab, May 1.
Correction
A rough draft paragraph found its way into last issue’s Embryonic Stem
Cell Primer. The third paragraph should have read: Su-Chun Zhang, M.D.,
Ph.D., is researching neural-based embryonic stem cells and their potential
for treating multiple sclerosis, amyotrophic lateral sclerosis, and other
diseases. (Clive Svendsen, Ph.D., is working with fetal derived neural
stem cells, not ES cells.) We sincerely apologize for the errors.
Where in the world is
Steve Shelton?
From Capitol Court to Cayo,
Distinguished Researcher travels many roads
Steven Shelton, B.S., began studying primate behavior as a young
research assistant in the late 1960s. As his research interests grew, he
considered going back to school to get a Ph.D., and perhaps teach, but
somewhere along the line, he got too busy.
Shelton has enjoyed a productive career studying basic stress, learning,
and emotion, in everything from rats and rhesus to humans. He has collaborated
with some of the most recognized scientists in the field. In fact, he has
remained so dedicated and focused on research for the past 37 years that
in 1998, he became the first member of UW-Madison’s academic staff to receive
the title Distinguished Researcher. Then, in 2001, Shelton received the
UW Chancellor’s Award for Research.
Shelton has enjoyed one of the longest running, most successful collaborations
on campus, with Ned Kalin, M.D. The two have led discoveries that shed
light on the mechanisms underlying adaptive and maladaptive behavior. These
findings have the potential to better understand mental illnesses and to
guide the development of new treatments. Their work is particularly relevant
to illnesses such as depression and anxiety.
As a result of all this success, Shelton has had to "live" in many different
offices and labs in at the UW. He often finds himself shuttling among
half a dozen sites—the Primate Center, the Harlow Center for Biological
Psychology, the W.M. Keck Laboratory for Functional Brain Imaging and Behavior,
the Medical Sciences Center, and "WISPIC", (moniker for Wisconsin Psychiatric
Institute and Clinics), which houses, among other things, the HealthEmotions
Research Institute, Kalin’s clinical practice and Kalin’s lab. On a recent
tour of all his haunts, Shelton picked up mail from more mailboxes than
any reasonable person should have to keep track of, and stopped in for
staff updates at numerous offices. Kalin and Shelton either manage or collaborate
with more than 100 people working in a veritable Über-lab of primate
and human psychoneuroendrocine research. In addition to his research, Shelton
has enjoyed mentoring students through UW’s Medical Scholars program for
the past 15 years.
The Kalin/Shelton lab at the Harlow Center for Biological Psychology,
next to the Primate Center, is the best place to start if you’re looking
for Steve. The place was abuzz with activity on a recent visit. Students
and technicians were working on a variety of projects, running questions
by Shelton nonstop, and coming and going through the glass door. No wonder
all the activity: Right now, Shelton, Kalin and the lab have four major
NIMH grants that involve services at the Harlow Lab and Primate Center
alone. (See "Center support," p. 10.)
Early years
As an adventuresome and somewhat untamed 20-year-old Shelton took
a so-called "side-trip" from Santa Fe, New Mexico, to Madison, Wisconsin.
"I came here for a summer job and sort of parlayed it into 35 years," he
said.
Originally from West Virginia, Shelton grew up in Santa Fe and was
not interested in science.
Rather he was drawn to art, literature, math and martial arts. Then,
an experience working as an undergraduate in a learning and memory rodent
lab at the University of New Mexico nudged him toward research. When a
similar position opened at the UW, Shelton was attracted to it because
of the opportunity to work with primates. He also kept busy moonlighting
as a martial arts instructor. The summer experience was so rewarding that
in 1969 he permanently returned to Madison.
On the fourth floor of the Primate Center, Shelton worked with John
Davenport, Ph.D., then Interim Director of the Primate Center, Harry Harlow
Ph.D., the originator of primate research at the UW, and Harry Waisman,
for whom the Waisman Center is named. The value of primate work was apparent
to him early on in his career as he was able to easily link his findings
to humans. The similarities in social and emotional behavior and, importantly,
brain structure between rhesus and humans made the work all the more exciting.
"At the time, we were unable to do sophisticated things like brain imaging,"
he said. "Today, we perform similar functional imaging studies in humans
and monkeys. It is amazing to see how similar brain structure and
function are between these species."
"My coming to Wisconsin was historic and important to me," Shelton said.
"There was a tremendous amount of press being attributed to Wisconsin at
the time. Harlow’s behavioral work was featured in Look and Life magazines,
and just about every other major magazine or scientific journal. Ironically,
the first scientific journal article Shelton had ever read was Harlow’s
now classic surrogate mother research. Looking back, he said, those studies
had a simple elegance that profoundly changed the way our society views
child rearing, mental illness, and attachment.
Shelton was involved primarily in studies by Harlow and Waisman. Another
study with John Davenport examined the effect of thyroid status on monkey
learning.
"At the time, the World Health Organization was concerned that malnutrition
may have been creating a whole generation of mentally retarded children.
These were the first studies to really look into that link. We learned
that the source of protein in the diet, animal or vegetable-derived, doesn’t
matter; as long as there is enough nutrition, the brain is fine. Believe
or not, 40 years ago this was not obvious."
A lifetime partnership
By the early ‘70s, John Davenport became gravely ill and had to
leave research. Shelton partnered with, Jim Allen, D.V.M., and Bob Bowman
Ph.D., to explore the effects of lead on behavior. He then collaborated
with Gary Kraemer, Ph.D., and Bill McKinney, M.D., who later became Psychiatry
Department Chair.
"A young resident of Bill’s wanted to come down and learn about primate
research," said Shelton. "That’s how Ned Kalin and I met. Having seen a
lot of young researchers come and go, as soon as I met Ned, there was no
question in my mind that he was going to go places."
When he finished his residency, Kalin headed to the NIH. After he finished
his work in Bethesda, he accepted a faculty position at in the Department
of Psychiatry at UW-Madison and that is when he and Shelton officially
teamed up.
"We knew we would work well together," Shelton said. "We complemented
each other quite well. We worked hard, but we also really enjoyed our successes."
Their early efforts garnered many grants. "We did primate research in
the morning, human research in the afternoon, and at night we ran the samples,"
Shelton said. "We studied corticotrophin releasing hormone (CRH), and its
effect on the hypothalamic pituitary adrenal (HPA) axis, the stress response
system in primates. We wanted to explore it in relation to human depression.
How did the system change when people got depressed?"
CRH, a 41-amino acid peptide, in the HPA axis is the brain’s first response
to a stressor. This turns on the pituitary to release ACTH, which in turn
releases cortisol from the adrenal gland? the "flight-or-flight" hormone.
"What happens to the HPA axis?" Shelton posed. "We knew that depressed
patients had an overactive stress response and we wanted to understand
the importance of this." In a now classic experiment, Shelton and Kalin
administered the hormone directly into rhesus brains. The findings were
dramatic and unexpected. High doses of CRH made monkeys depressed; in lower
doses they became anxious. This was among the first evidence suggesting
that increased CRH activity in the brain underlies depression and anxiety.
Clinical research performed elsewhere revealed this was in fact the case.
Today new treatments for depression and anxiety are being developed based
on these early observations.
"Show me an emotion"
By the early 1980s, Shelton and Kalin had a couple of lab volunteers,
but still did most of the work themselves. Outside their marriages, their
social lives consisted of occasionally going down to Memorial Union and
taking sailing lessons. "We used to say that when we were successful, we
were going to go sailing every Friday," Steve remembers. "Of course, now
we have many more demands, so our dream is still on hold."
Kalin is Psychiatry Department Chair and also directs the HealthEmotions
Research Institute. "As chair of the Psychiatry Department, Ned has been
able to build a strong bridge between Psychiatry and Psychology," Shelton
praised. Initially, the relationship was forged by Kalin and Richard
Davidson, Ph.D., working closely together. "Richie is one of the most recognized
experts in emotion research and has become a wonderful collaborator," Steve
added. The researchers have been able to investigate issues related to
normal emotion and psychopathology at clinical and preclinical mechanistic
levels.
Shelton’s and Kalin’s long-term goals are to understand the fundamental
causes of abnormal emotional responses and how they predispose people to
stress. Their early studies published in Science revealed that different
brain chemicals regulated different aspects of stress and fear-related
behavior. For example, endogenous opiate compounds modulate mother and
infant attachment distress, whereas drugs like valium affect fear and anxiety.
The work yielded new ideas on treating illnesses such as anxiety and depression.
Other experiments involved unraveling the underlying contributions of genes
and critical experiences in the development of psychopathology.
About six years ago, Kalin and Davidson established the HealthEmotions
Research Institute in the Department of Psychiatry. The Institute has attracted
more students to "the biology of emotion" field. Davidson also directs
the Keck Brain and Behavior Imaging Laboratory. The lab houses state-of-the-art
technology that makes taking detailed structural and chemical pictures
of the brain possible. In addition to the full-size MRI and PET scanning
machines, Kalin and Andrew Roberts, Ph.D., recently received an NIH Instrumentation
grant to purchase a portable monkey PET scanner.
"This allows us to gain amazing resolution of brain areas that we could
not see before," Shelton emphasized. "It is very exciting to be able to
perform the same scans in monkeys as those being performed in humans. This
definitely adds to the relevance of the primate studies." Shelton also
collaborates with Onofre DeJesus, Ph.D., in Medical Physics. DeJesus specializes
in the development of new PET radiotracers for studying Parkinson’s disease
and other movement disorders, substance abuse, schizophrenia, and cancer.
PET studies involving rhesus monkeys in this campus would not have been
possible without Shelton's expertise and dedication, DeJesus stated. "I
remember when we first started PET imaging rhesus monkeys in the late ’80s.
Because the human clinical scanner was available to us only on nights and
weekends, Steve was the last one to leave around 3 or 4 a.m; he made sure
that the monkeys recovered from the anesthesia. He really deserves the
honors and awards bestowed on him."
To Cayo Santiago
Shelton’s work has extended beyond the traditional laboratory to
a naturalistic setting on the Island of Cayo Santiago. Located off the
coast of Puerto Rico, the isle is inhabited by approximately 1,000 free-
ranging rhesus monkeys. Over the past 10 years, Shelton and Kalin
have been studying the biology and behavior of a subset of monkeys to determine
the physiological makeup of individuals who are vulnerable to stress.
At least once a year, Shelton travels to the island to oversee behavioral
data and biological measures collection. (His fluency in Spanish has been
a great aid to his efforts.)
"Going to Cayo Santiago became my dream after I heard about it," Shelton
reflected. "When I first went down there with Ned 10 years ago, there was
no real refrigeration or other necessary laboratory supplies. We established
a portable lab to perform endocrine and immune studies. A pilot grant
from a private Health-Emotion’s donor allowed us to modernize our efforts."
Behaviorist Clarence R. Carpenter, Ph.D., first brought rhesus monkeys
to the island in 1938 to study behavior, anatomy and tropical diseases.
Today the expanded population is mostly observationally studied. "Our studies
combine minimally invasive procedures with rich behavioral data to allow
for a unique synthesis of behavior and biology," Shelton said. "The work
at Cayo is an important complement to our laboratory studies." Recently
funded by NIMH, the research is part of the Mind-Body Center grant directed
by Davidson.
The Über-lab tour has reached its end. Shelton’s many haunts—through
back alleys and in basements, at monkey labs and out in Madison’s Research
Park—are running smoothly for another day. He has worked at the Primate
Center, Harlow Lab, Psychology building, Waisman Center, VA Hospital, and
wherever else his research has led him. One might argue that the only thing
constant about all these places has been Steve. "Some of the animal areas
are now my offices, and some of my former offices are now animal areas,"
he said.
He appears to be a man at peace, with a mix of self-depreci-ating humor
and calm temperament, but also a spark for life. He’s always alert and
on the move. Maybe its his martial arts background. Or it’s because
he gets so much exercise being everywhere at once. Or, he just loves what
he does.
"I’ve been extremely fortunate to be involved with science advances
at the UW," Steve said. "When I first came to Madison, I never imagined
that I would stay... Its been 35 years and I don’t know the meaning of
burnout. There are many more important discoveries just around the
corner."
Center Support and Current Projects
Steve Shelton has worked at the Primate Center and Harlow Lab for
35 years. When he compares the old, small and dim surgery rooms to the
WPRC’s new facilities, he gets excited.
"The new surgery suite and facilities are a tremendous asset to our
work," he said. "We bought a large surgical microscope which can be housed
in the new addition, so I am over at the center a lot more these days.
Having been to other surgical suites throughout the United States, I can
tell you the facilities are top-notch, When I walked in there, my mouth
dropped open because I didn’t know it would be quite so spectacular."
Denny Mohr, who supervises Center surgical needs, has been of great
help to the Kalin-Shelton lab: "Denny always has everything ready that
you need, even things you didn’t know you needed. I can’t believe all the
things he has to keep in mind, he’s amazing."
Shelton also acknowledges the work of Doug Cowley, Russell Vertein and
the rest of the Animal Services staff. "Having ‘grown up’ with such wonderful
colleagues such as Doug and Rosie for all these years has really made the
primate center not only a great place to do research, but also like a family,"
he said, "This is an opportunity to say thanks that doesn’t come along
that often."
The lab is currently involved in several projects that depend on NIH
and Primate Center support. The study, "Affective style: social and psychobiological
substrates," uses the rhesus monkey to characterize the behavioral and
physiological correlates of extreme behavioral inhibition and investigate
brain mechanisms underlying this trait.
Behavioral inhibition (BI) or, in its extreme form, freezing, is an
adaptive response individuals engage in when confronted with threatening
situations. Clinical research has demonstrated that excessive BI is a trait
marker for very shy children who develop into overly fearful adolescents
and adults. Later on, these individuals are likely to develop clinically
significant anxiety and depression. Extreme behavioral inhibition may be
an early marker for psychopathology. Kalin and Shelton developed a paradigm
in rhesus monkeys to assess BI. They characterized the biological
correlates of extreme BI and found that affected animals have relative
right frontal electrical activity and elevated basal cortisol levels. They
further characterized the endocrinology phenotype of fearful temperaments.
A second project, "Development and Regulation of Emotion," explores,
through sophisticated behavioral measures, the neural system underlying
the expression of emotion in primates. Results point to a key role for
the amygdala in processing acutely fearful stimuli. This is highly relevant
to humans, as it addresses the role of amygdala-orbitofrontal interactions
in mediating normal emotion and psychopathology.
People with positive vs. negative dispositions have lower levels of
stress-related hormones, better immune function, and are more likely to
survive stressful social and physiological insults. In humans, social stress
often leads to psychological and physical disability. A recent study
found that depression greatly increases the risk of death in people who
recently suffered heart attacks. Kalin and Shelton’s NIMH grant "Social
stress in primates: Vulnerability and resilience," attempts to understand
the interaction between survival and social stress, studying monkeys on
Cayo Santiago.
"The Amygdala and Primate Sleep," (Ruth Benca, MD, Ph.D., principal
investigator) supports preclinical studies to examine neural circuits and
mechanisms underlying primate sleep. Increased daytime emotionality, anxiety
and depression are associated with sleep alterations. Since the amygdala
is key to emotional processing and is connected to sleep regulating regions,
the team is examining the role of the amygdala in regulating the effects
of stress on disrupted sleep.
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