Author
Katznelson L1.
- 1Departments of Medicine and Neurosurgery, Stanford University School of Medicine, 875 Blake Wilbur Dr MC 5826, Stanford, CA, 94305, USA, lkatznelson@stanford.edu.
“Genetics and runaway appetite are not the only causes of obesity. Sometimes, your own body can turn against you in ways you never thought possible.” ~The Science of Obesity
| Contact: Aaron Lohr Director, Media Relations Phone: 202.971.3654 alohr@endocrine.org | Contact: Jenni Glenn Gingery Manager, Media Relations Phone: 202.971.3655 jgingery@endocrine.org |
CHICAGO, IL—Researchers have developed a device that uses any smartphone to measure the cortisol concentration in saliva. The device was presented Tuesday, June 24, at ICE/ENDO 2014, the joint meeting of the International Society of Endocrinology and the Endocrine Society in Chicago.
"We have developed a method for measuring cortisol in saliva using a smartphone and a disposable test strip. This innovation enables anyone with a smartphone to measure their salivary cortisol level quickly, accurately, and affordably," said lead study author Joel R. L. Ehrenkranz, MD, director of diabetes and endocrinology of the Department of Medicine at Intermountain Healthcare in Murray, Utah.
Cortisol is a hormone made by the adrenal glands that's essential for the body's response to stress, and measuring cortisol can help diagnose adrenal diseases and monitor stress levels. Current testing for salivary cortisol levels involves collecting a saliva sample and sending it to a clinical lab for analysis.
"A lab charges about $25 to $50 for a quantitative salivary cortisol test and has a turnaround time of days to a week. This test, taken in a medical office or at home, will cost less than $5 and take less than 10 minutes," Dr. Ehrenkranz said. "The device is a reader that includes a case, a light pipe, and a lens and costs about a dollar to make. There is no battery power and it's unbreakable, passive and reusable."
Doctors worldwide can use the smartphone test to help them diagnose adrenal insufficiency and hypercortisolism and monitor physiologic variations in cortisol concentration; and individuals can monitor their own cortisol levels whenever they like.
The software is "operating-system-agnostic," he explained, meaning that the device can be used on all platforms, including iOS, Android, Windows, and BlackBerry, and it has a universal form factor that works with all smartphones.
The person being tested inserts a straw-like saliva collector under the tongue. The collector wicks the saliva by capillary action to an immunoassay strip housed in a cassette and the cassette is inserted into the reader. The smartphone uses its camera and flash to take a picture of the saliva-coated strip and an algorithm converts the image's pixel density to a cortisol value.
Marketing this test as a cortisol assay would make it a class 2 medical device, Dr. Ehrenkranz explained. He and his research team are now collecting clinical data for the FDA submission, and hope to attain approval in 2015.
This study was privately funded.
# # #
Founded in 1916, the Endocrine Society is the world's oldest, largest and most active organization devoted to research on hormones and the clinical practice of endocrinology. Today, the Endocrine Society's membership consists of over 17,000 scientists, physicians, educators, nurses and students in more than 100 countries. Society members represent all basic, applied and clinical interests in endocrinology. The Endocrine Society is based in Washington, DC. To learn more about the Society and the field of endocrinology, visit our site at www.endocrine.org. Follow us on Twitter at https://twitter.com/#!/EndoMedia.
Our cortisol sensing technology enables monitoring of stress levels non-invasively using a nanoengineered biochip and a handheld measurement device. The nanoengineered biochip is both low cost and disposable. We are working with Florida International University and the National Science Foundation's I-Corps program to assess both the market needs and market constraints of the technology from an economic perspective while finalizing the development of the initial market prototype.
- See more at: http://istart.org/startup-idea/consumer-goods-life-sciences/handheld-cortisol-sensor-for-ptsd/24000#sthash.tIzmUwin.dpufShekhar Bhansali (left) and Kelly Mesa (right) are fighting the negative health effects of cortisol.
FIU researchers are developing a test to detect in real-time a person's level of cortisol – widely known as the stress hormone – which could help soldiers with post-traumatic stress disorder (PTSD), and others who suffer from cortisol's effects, to manage its impact on their health.
Cortisol is released by the adrenal glands as part of the fight-or-flight mechanism. Elevated levels of cortisol can cause a long list of negative health effects, including depression, mental illness, heart disease and lower life expectancy.
Now, with a $50,000 grant from the National Science Foundation's Innovation Corps (I-Corps) program, Shekhar Bhansali, Alcatel-Lucent professor and chair of the Department of Electrical and Computer Engineering, and Kelly Mesa, a doctoral student in his department, are exploring the commercial potential of their research on cortisol detection. Other members of the team include Gabriel Saffold, a graduate student in entrepreneurship at the University of Central Florida, and Alison Tanner from the Florida Institute for the Commercialization of Public Research, who will serve as business mentors for the project.
They are one of 24 teams from universities around the country that will participate in national business development workshops and speak with potential customers and partners to evaluate the real-world potential of their technology. They also will use the Business Model Canvas, a popular entrepreneurial tool, to refine their business model.
Cortisol levels currently can only be measured on tests done in a lab. The team's goal is to see if there can be a quantitative diagnosis for PTSD through a quick test done with a sample of sweat or saliva. The proposed sensor has the potential to aid soldiers with PTSD by providing a tool that allows them to monitor their stress levels throughout the day, Mesa said.
FIU has established itself as a leader in the detection of cortisol through its nanotechnology research. One of four partner universities in the NSF's Nanosystems Engineering Research Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST), FIU is a leader in a national nanotechnology research effort to create small, wearable, self-powered devices that will help people monitor their health.
The FIU team's research involves building a sensor on a strip and the electronics to read it. Within the six-month duration of the NSF grant, the team will determine whether their research is worthy of pursuit.
"We need to understand what our potential customers' needs are and see if our technology can be engineered to serve them," said Bhansali, the team's principal investigator.
Appl Biochem Biotechnol. 2014 Oct;174(3):1115-26. doi: 10.1007/s12010-014-0894-2. Epub 2014 Apr 11.
Psychological stress caused by everyday lifestyle contributes to health disparities experienced by individuals. It affects many biomarkers, but cortisol - "a steroid hormone" - is known as a potential biomarker for psychological stress detection. Abnormal levels of cortisol are indicative of conditions such as Cushing's syndrome Addison's disease, adrenal insufficiencies and more recently post-traumatic stress disorder (PTSD). Chromatographic techniques, which are traditionally used to detect cortisol, are a complex system requiring multistep extraction/purification. This limits its application for point-of-care (POC) detection of cortisol. However, electrochemical immunosensing of cortisol is a recent advancement towards POC application. This review highlights simple, low-cost, and label-free electrochemical immunosensing platforms which have been developed recently for sensitive and selective detection of cortisol in bio-fluids. Electrochemical detection is utilized for the detection of cortisol using Anti-Cortisol antibodies (Anti-Cab) covalently immobilized on nanostructures, such as self-assembled monolayer (SAM) and polymer composite, for POC integration of sensors. The observed information can be used as a prototype to understand behavioral changes in humans such as farmers and firefighters. Keeping the future directions and challenges in mind, the focus of the BioMEMS and Microsystems Research Group at Florida International University is on development of POC devices for immunosensing, integration of these devices with microfluidics, cross validation with existing technologies, and analysis of real sample.
Continuous subcutaneous hydrocortisone infusion was a safe approach for decreasing adrenocorticotropic hormone and cortisol levels to a normal circadian level with minimal adverse effects on glucocorticoid metabolism compared with conventional oral hydrocortisone replacement therapy, according to results in a prospective crossover study.
These data suggest a physiological glucocorticoid replacement therapy may be beneficial and that the infusion may become an option for patients with poorly controlled levels such as those with Addison's disease, according to Marianne Øksnes, MD,of the department of clinical science and department of medicine at the University of Bergen in Norway, and colleagues.
Patients with Addison's disease (n=33) were assessed at baseline and after 8 and 12 weeks in each treatment arm, according to data.
The infusion allowed the normalization of adrenocorticotropic hormone (ACTH) and cortisol levels, and 24-hour salivary cortisol curves appeared to reach normal circadian variation, the researchers wrote.
"This study shows that [continuous subcutaneous hydrocortisone infusion] can safely re-establish the circadian cortisol rhythm and normalize morning ACTH levels in [Addison's disease] patients, which is in sharp contrast to the typical daytime cortisol peaks and troughs and elevated morning ACTH seen with [oral hydrocortisone] treatment," researchers wrote.
The oral hydrocortisone yielded major alterations in glucocorticoid metabolites and metabolic enzyme activities, according to researchers. However, the infusion appeared to restore glucocorticoid metabolism close to normal.
No significant between-treatment differences were observed in sleep outcomes, according to data.
Additional studies are warranted to determine further ultradian rhythm improvement outcomes for patients with Addison's disease.
Doctors conducting the follow-up study of individuals treated with hGH looked at causes of death among recipients and found some disturbing news. Many more people have died from a treatable condition called adrenal crisis than from CJD. This risk does not affect every recipient. It can affect those who lack other hormones in addition to growth hormone. Please read on to find out if this risk applies to you. Death from adrenal crisis can be prevented.
Adrenal crisis is a serious condition that can cause death in people who lack the pituitary hormone ACTH. ACTH is responsible for regulating the adrenal gland. Often, people are unaware that they lack this hormone and therefore do not know about their risk of adrenal crisis.
Most people who were treated with hGH did not make enough of their own growth hormone. Some of them lacked growth hormone because they had birth defects, tumors or other diseases that cause the pituitary gland to malfunction or shut down. People with those problems frequently lack other key hormones made by the pituitary gland, such as ACTH, which directs the adrenal gland to make cortisol, a hormone necessary for life. Having too little cortisol can be fatal if not properly treated.
Treatment with hGH does not cause adrenal crisis, but because a number of people lacking growth hormone also lack ACTH, adrenal crisis has occurred in some people who were treated with hGH. In earlier updates we have talked about how adrenal crisis can be prevented, but people continue to die from adrenal crisis, which is brought on by lack of cortisol. These deaths can be prevented. Please talk to your doctor about whether you are at risk for adrenal crisis.
When someone with adrenal gland problems has weakness, nausea, or vomiting, that person needs immediate emergency treatment to prevent adrenal crisis and possible death.
Remember: Some people who lacked growth hormone may also lack cortisol, a hormone necessary for life. Lack of cortisol can cause adrenal crisis, a preventable condition that can cause death if treated improperly . Deaths from adrenal crisis can be prevented if patients and their families recognize the condition and are careful to treat it right away. Adrenal crisis is a medical emergency. Know the symptoms and how to adjust your medication when you are ill. Taking these precautions can save your life.
6 Information Way
Bethesda, MD 20892–3569
Phone: 1–888–828–0904
TTY: 1–866–569–1162
Fax: 703–738–4929
Email: endoandmeta@info.niddk.nih.gov
Internet: www.endocrine.niddk.nih.gov
The National Endocrine and Metabolic Diseases Information Service is an information dissemination service of the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). The NIDDK is part of the National Institutes of Health, which is part of the U.S. Department of Health and Human Services.
The NIDDK conducts and supports biomedical research. As a public service, the NIDDK has established information services to increase knowledge and understanding about health and disease among patients, health professionals and the public.
This publication is not copyrighted. The NIDDK encourages users of this publication to duplicate and distribute as many copies as desired.
September 2010
[Top]
Page last updated September 24, 2012
Hollywood has it wrong: I'm a teenager with an illness, and it's not glamorous at all
http://www.washingtonpost.com/opinions/hollywood-has-it-wrong-im-a-teenager-with-an-illness-and-its-not-glamorous-at-all/2014/09/12/b9154a7e-38f9-11e4-8601-97ba88884ffd_story.htmlA Texas pre-teen's medically induced obesity and subsequent slim-down has led her parents to a broader mission: Ensure that people with dangerous adrenal insufficiency get the right treatment in emergencies.
Alexis Shapiro's condition, caused by removal of a benign brain tumor three years ago, prompted nonstop hunger that pushed her weight above 200 pounds. Life-saving surgery in March has left her 50-plus pounds trimmer.
Alexis' condition must be painstakingly managed via oral steroids and 24/7 access to a needle and the drug Solu Cortef, which must be injected within 30 minutes after serious symptoms arise. Yet the vast majority of ambulances don't carry the drug.
Shapiro is banding with a network of"friends and family" impacted by AI to lobby for all EMS units to carry Solu Cortef — and to urge that all first responders learn more about the illness.
People with AI lack vital hormones produced by the adrenal glands. The paired organs sit atop the kidneys, flooding the body with chemicals that, among other things, maintain blood sugar, blood pressure and cardiac output during stress, said Dr. Michael Freemark, chief of pediatric endocrinology and diabetes at Duke University Medical Center.
Some people are born with AI. But far more — possibly "several million," said Freemark, who supports the push for EMS units to carry Solu Cortef — have secondary adrenal insufficiency caused by brain tumors (and their removals), strokes or long-term use of administered drugs like prednisone and hydrocortisone.
"I told them she has adrenal insufficiency and was going to need her shot at the hospital. She was white as a sheet, shaking, going into crisis."
Two close calls with AI have stricken Alexis — the second aboard a jet as sheflew to Cincinnati last spring for the gastric-sleeve operation that curbed her ravenous appetite. (NBC News has followed Alexis' journey since December.)
But it was the first terrifying episode at her kitchen table about a year ago that launched Jenny Shapiro's latest fight for her daughter, who wears a medic-alert bracelet revealing she has AI. A chair accidentally landed on and fractured Alexis' pinky toe — and the injury triggered an adrenal crisis.
"Before the ambulance got there, she said everything was going dark," Sharpiro said.
The mother gave Alexis five steroid pills to swallow — what's known as a "stress dose." (She normally takes one pill in the morning, one at night.) She hoped her daughter would keep the meds down. Vomiting is a common symptom of adrenal crisis. Sharpiro also agonized about giving Alexis an emergency Solu Cortef shot in case her stomach heaved up the tablets. As the EMS team arrived, Shapiro urged them to rush Alexis to the hospital. They urged her to "calm down."
"A lot of paramedics don't know what it is. When they came to my house when Alexis was in crisis, they kind of blew me off when I kept asking if I should inject her. They didn't know what I was talking about," Shapiro said. "That, plus not having the medication on ambulances, creates a dangerous situation."
Many people likely wouldn't learn they have AI until they lapse into a disorienting adrenal crisis, said Eric Hart. He lost his 22-year-old son, Philip, to an adrenal crisis caused by undiagnosed Addison's disease. Philip's adrenal crisis was triggered by a bout of flu.
His death spurred Hart to start 4Philip.org, a nonprofit in the Raleigh, North Carolina, area that has persuaded a local EMS training school to list adrenal shock as an illness paramedics must consider when assessing patients.
"Like Alexis' parents discovered, Solu Cortef is not carried on ambulances — something we seek to change," Hart said. "This needs to go nationwide."
Adrenal Insufficiency United is spearheading the drive to raise awareness among medics and, perhaps eventually, equip every ambulance with a $7 vial of Solu Cortef, a corticosteroid that restores the body's crashing hormonal chemistry and helps people in adrenal crisis to start recovering.
The nonprofit, based in Eugene, Oregon, was formed by Jenny Knapp, whose 18-year-old daughter was born with AI (Knapp's daughter, who wears a medic-alert necklace, prefers not to be named).
Knapp's daughter has a horror story similar to Shapiro's. The triggering incident was a car accident.
"I did not have the Solu Cortef injection with me because my (daughter's doctor) told me EMS squads carry it and would give it to her," Knapp recalls. "The ambulance got there. They didn't have it. I told them she has adrenal insufficiency and was going to need her shot at the hospital. She was white as a sheet, shaking, going into crisis. They barely looked at her."
On Tuesday, Knapp's group launched anonline petition to establish new emergency policies to treat adrenal crises, emphasizing "timely treatment prevents needless disability and death." By Friday, more than 3,000 people had signed the petition.
"You have a $7 injection versus someone becoming permanently disabled or dying from this," Knapp said. "Is this a third-world country where people are dying because of (the lack of) a $7 injection on ambulances?
"I don't blame EMS (emergency medical services) for this," Knapp said. "What they hear in training about adrenal insufficiency is maybe a couple sentences. They want to help. I'd love all EMS to carry Solu Cortef. However, that's not going to work for (all EMS units). Our solution is: 'Why don't you (paramedics and EMTs) just inject the patient-carried meds?'"
"If they want the ambulance squads to give their kids Solu Cortef that someone pulls out of the refrigerator, that's not fair to an EMS squad," Sacchetti said. "The paramedics would think: 'What's really in this vial? How much do they get?' The whole thing is very suspect."
The better choice, Sacchetti asserts, is to treat people in adrenal crisis with Solu Medrol, a glucocorticoid carried by every EMS responder. That drug will "buy you time," stabilizing the patient until they reach a hospital, he added.
"I've talked to some of these parents at length: 'I understand, you've got a child with a special problem and I sympathize.' But I can't say to every EMS squad: 'You must carry all of these very unusual drugs for the three people in the state who have this disease.' You couldn't justify the cost," Sacchetti said.
Freemark, the AI specialist from Duke University Medical Center, disagrees with that stance — and with the number of people perhaps afflicted. He believes all EMS units should carry Solu Cortef — and should include AI among the assessment protocols used to evaluate patients in distress.
"It is a potentially life-threatening condition," Freemark said.