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Sniffing out your identity with breath biometrics

Fukuoka, Japan—Biometric authentication like fingerprint and iris scans are a staple of any spy movie, and trying to circumvent those security measures…

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Fukuoka, Japan—Biometric authentication like fingerprint and iris scans are a staple of any spy movie, and trying to circumvent those security measures is often a core plot point. But these days the technology is not limited to spies, as fingerprint verification and facial recognition are now common features on many of our phones.

Credit: Kyushu University/Yanagida Lab

Fukuoka, Japan—Biometric authentication like fingerprint and iris scans are a staple of any spy movie, and trying to circumvent those security measures is often a core plot point. But these days the technology is not limited to spies, as fingerprint verification and facial recognition are now common features on many of our phones.

Now, researchers have developed a new potential odorous option for the biometric security toolkit: your breath. In a report published in Chemical Communications, researchers from Kyushu University’s Institute for Materials Chemistry and Engineering, in collaboration with the University of Tokyo, have developed an olfactory sensor capable of identifying individuals by analyzing the compounds in their breath.

Combined with machine learning, this ‘artificial nose,’ built with a 16-channel sensor array, was able to authenticate up to 20 individuals with an average accuracy of more than 97%.

In this age of information and technology, biometric authentication is a critical way to safeguard valuable assets. From the usual suspects of fingerprints, palm prints, voices, and faces to the less common options of ear acoustics and finger veins, there are a variety of biometrics that machines can use to identify you.

“These techniques rely on the physical uniqueness of each individual, but they are not foolproof. Physical characteristics can be copied, or even compromised by injury,” explains Chaiyanut Jirayupat, first author of the study. “Recently, human scent has been emerging as a new class of biometric authentication, essentially using your unique chemical composition to confirm who you are.”

One such target has been percutaneous gas—compounds produced from your skin. However, these methods have their limits because the skin does not produce a high enough concentration of volatile compounds for machines to detect.

So, the team turned to see if human breath could be used instead.

“The concentration of volatile compounds from the skin can be as low as several parts-per-billion or trillion, while compounds exhaled from the breath can go as high as parts-per-million,” continues Jirayupat. “In fact, human breath has already been used to identify if a person has cancer, diabetes, and even COVID-19.”

The team began by analyzing the breath of subjects to see which compounds could be used for biometric authentication. A total of 28 compounds were found to be viable options.

Based on this, they developed an olfactory sensor array with 16 channels, each which could identify a specific range of compounds. The sensor data was then passed into a machine learning system to analyze the composition of each person’s breath and develop a profile to be used to distinguish an individual.

Testing the system with breath samples from six people, the researchers found it could identify individuals with an average accuracy of 97.8%. This high level of accuracy remained consistent even when the sample size was increased to 20 people.

“This was a diverse group of individuals of differing age, sex, and nationality. It’s encouraging to see such a high accuracy across the board,” explains Takeshi Yanagida who led the study.

Nonetheless, he admits that more work is needed before it arrives on your next smartphone.

“In this work, we required our subjects to fast six hours before testing,” concludes Yanagida. “We’ve developed a good foundation. The next step will be to refine this technique to work regardless of diet. Thankfully, our current study showed that adding more sensors and collecting more data can overcome this obstacle.”

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For more information about this research, see “Breath odor-based individual authentication by an artificial olfactory sensor system and machine learning,” Chaiyanut Jirayupat, Kazuki Nagashima, Takuro Hosomi, Tsunaki Takahashi, Benjarong Samransuksamer, Yosuke Hanai, Atsuo Nakao, Masaya Nakatani, Jiangyang Liu, Guozhu Zhang, Wataru Tanaka, Masaki Kanai, Takao Yasui, Yoshinobu Babaf, and Takeshi Yanagida, Chemical Communications (2022). https://doi.org/10.1039/d1cc06384g

About Kyushu University
Kyushu University is one of Japan’s leading research-oriented institutes of higher education since its founding in 1911. Home to around 19,000 students and 8,000 faculty and staff, Kyushu U’s world-class research centers cover a wide range of study areas and research fields, from the humanities and arts to engineering and medical sciences. Its multiple campuses—including the largest in Japan—are located around Fukuoka City, a coastal metropolis on the southwestern Japanese island of Kyushu that is frequently ranked among the world’s most livable cities and historically known as a gateway to Asia.


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Government

New Hampshire Governor Vetoes Ivermectin Bill

New Hampshire Governor Vetoes Ivermectin Bill

Authored by Alice Giordano via The Epoch Times (emphasis ours),

New Hampshire’s Republican…

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New Hampshire Governor Vetoes Ivermectin Bill

Authored by Alice Giordano via The Epoch Times (emphasis ours),

New Hampshire’s Republican Gov. Chris Sununu vetoed a bill that would have made Ivermectin available without a prescription.

Ivermectin tablets packaged for human use. (Natasha Holt/The Epoch Times)

The Republican governor vetoed the bill on June 24, the same day that the U.S. Supreme Court overturned Roe v. Wade. Some fellow Republicans questioned the timing.

It certainly seemed like a convenient way to bury a veto of a bill that won support from the vast majority of Republicans in New Hampshire,” JR Hoell, co-founder of the conservative watchdog group RebuildNH, told The Epoch Times.

Hoell is a former four-term House Republican planning to seek re-election after a four-year hiatus from the the New Hampshire legislature.

Earlier this year, the New Hampshire Department of Children Youth and Family (DCYF) tried to take custody of Hoell’s 13-year old son after a nurse reported him for giving human-grade ivermectin to the teen months earlier.

Several states have introduced bills to make human-grade ivermectin available without a prescription at a brick and mortar store. Currently, it can be ordered online from another country. In April, Tennessee became the the first state to sign such a measure into law. New Hampshire lawmakers were first to introduce the idea.

Both chambers of the state’s Republican controlled legislature approved the bill.

In his statement explaining the veto, Sununu noted that there are only four other controlled medications available without a prescription in New Hampshire and that each were only made available after “rigorous reviews and vetting to ensure” before being dispensed.

“Patients should always consult their doctor before taking medications so that they are fully aware of treatment options and potential unintended consequences of taking a medication that may limit other treatment options in the future,” Sununu said in his statement.

Sununu’s statement is very similar to testimony given by Paula Minnehan, senior vice president of state government regulations for the New Hampshire Hospital Association, at hearings on the bill.

Minnehan too placed emphasis on the review that went into the four prescription medications the state made available under a standing order. They include naloxone, the generic name for Narcan, which is used to counter opioid overdoses, hormone replacement therapy drugs, and a prescription-version of the morning after pill.

It also includes a collection of smoking cessation therapy drugs like Chantix, which has been linked to suicide, depression, and other neuropsychiatric conditions. Last year, Pfizer, the leading maker of the FDA-approved drug, conducted a voluntarily recall of Chantix. Narcan has also been linked to deaths caused by severe withdrawals that have led to acute respiratory distress.

Rep. Melissa Blasek, a Republican co-sponsor of the New Hampshire ivermectin bill, told The Epoch Times, that one could veto any drug-related bill under the pretense of overdose concerns.

The reality is you can overdose on Tylenol,” she said. “Ivermectin has one of the safest track records of any drug.”

The use of human-grade ivermectin became controversial when some doctors began promoting it for the treatment and prevention of COVID-19. Government agencies including the FDA and CDC issued warnings against its use while groups like Front Line COVID-19 Critical Care Alliance (FLCCC) heavily promoted it.

Some doctors were  disciplined for prescribing human-grade ivermectin for COVID-19 including a Maine doctor whose medical license was suspended by the state.

Read more here...

Tyler Durden Thu, 06/30/2022 - 20:30

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Aging-US | Time makes histone H3 modifications drift in mouse liver

BUFFALO, NY- June 30, 2022 – A new research paper was published in Aging (Aging-US) on the cover of Volume 14, Issue 12, entitled, “Time makes histone…

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BUFFALO, NY- June 30, 2022 – A new research paper was published in Aging (Aging-US) on the cover of Volume 14, Issue 12, entitled, “Time makes histone H3 modifications drift in mouse liver.”

Credit: Hillje et al.

BUFFALO, NY- June 30, 2022 – A new research paper was published in Aging (Aging-US) on the cover of Volume 14, Issue 12, entitled, “Time makes histone H3 modifications drift in mouse liver.”

Aging is known to involve epigenetic histone modifications, which are associated with transcriptional changes, occurring throughout the entire lifespan of an individual.

“So far, no study discloses any drift of histone marks in mammals which is time-dependent or influenced by pro-longevity caloric restriction treatment.”

To detect the epigenetic drift of time passing, researchers—from Istituto di Ricovero e Cura a Carattere Scientifico, University of Urbino ‘Carlo Bo’, University of Milan, and University of Padua—determined the genome-wide distributions of mono- and tri-methylated lysine 4 and acetylated and tri-methylated lysine 27 of histone H3 in the livers of healthy 3, 6 and 12 months old C57BL/6 mice. 

“In this study, we used chromatin immunoprecipitation sequencing technology to acquire 108 high-resolution profiles of H3K4me3, H3K4me1, H3K27me3 and H3K27ac from the livers of mice aged between 3 months and 12 months and fed 30% caloric restriction diet (CR) or standard diet (SD).”

The comparison of different age profiles of histone H3 marks revealed global redistribution of histone H3 modifications with time, in particular in intergenic regions and near transcription start sites, as well as altered correlation between the profiles of different histone modifications. Moreover, feeding mice with caloric restriction diet, a treatment known to retard aging, reduced the extent of changes occurring during the first year of life in these genomic regions.

“In conclusion, while our data do not establish that the observed changes in H3 modification are causally involved in aging, they indicate age, buffered by caloric restriction, releases the histone H3 marking process of transcriptional suppression in gene desert regions of mouse liver genome most of which remain to be functionally understood.”

DOI: https://doi.org/10.18632/aging.204107 

Corresponding Author: Marco Giorgio – marco.giorgio@unipd.it 

Keywords: epigenetics, aging, histones, ChIP-seq, diet

Sign up for free Altmetric alerts about this article:  https://aging.altmetric.com/details/email_updates?id=10.18632%2Faging.204107

About Aging-US:

Launched in 2009, Aging (Aging-US) publishes papers of general interest and biological significance in all fields of aging research and age-related diseases, including cancer—and now, with a special focus on COVID-19 vulnerability as an age-dependent syndrome. Topics in Aging go beyond traditional gerontology, including, but not limited to, cellular and molecular biology, human age-related diseases, pathology in model organisms, signal transduction pathways (e.g., p53, sirtuins, and PI-3K/AKT/mTOR, among others), and approaches to modulating these signaling pathways.

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For media inquiries, please contact media@impactjournals.com.

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Government

FDA asks for COVID boosters to fight Omicron’s BA.4, BA.5 subvariants

The U.S. Food and Drug Administration on Thursday recommended booster doses of COVID-19 vaccines be modified beginning this fall to include components…

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FDA asks for COVID boosters to fight Omicron’s BA.4, BA.5 subvariants

By Michael Erman

June 30 (Reuters) – The U.S. Food and Drug Administration on Thursday recommended booster doses of COVID-19 vaccines be modified beginning this fall to include components tailored to combat the currently dominant Omicron BA.4 and BA.5 subvariants of the coronavirus.

The FDA said manufacturers would not need to change the vaccine for the primary vaccination series, saying the coming year will be “a transitional period when this modified booster vaccine may be introduced.”

FILE PHOTO: Signage is seen outside of the Food and Drug Administration (FDA) headquarters in White Oak, Maryland, U.S., August 29, 2020. REUTERS/Andrew Kelly/File Photo

The new booster shots would be bivalent vaccines, meaning doses would target both the original virus as well as the Omicron subvariants.

The decision follows a recommendation by the agency’s outside advisers to change the design of the shots this fall in order to combat more prevalent versions of the coronavirus. read more

BA.4 and BA.5 are now estimated to account for more than 50% of U.S. infections, according the U.S. Centers for Disease Control and Prevention, and have also become dominant elsewhere.

The FDA said in a statement on Thursday that it hoped the modified vaccines could be used in early to mid-fall.

Pfizer Inc (PFE.N) with partner BioNTech SE (22UAy.DE) and Moderna Inc (MRNA.O) have been testing versions of their vaccines modified to combat the BA.1 Omicron variant that caused the massive surge in cases last winter.

Although they have said those vaccines worked against BA.1 and the more recently circulating variants, they did see a lower immune response against BA.4 and BA.5.

The companies had already been manufacturing their BA.1 vaccines, and said on Tuesday that swapping to a BA.4/BA.5 version could slow the rollout.

Pfizer/BioNTech, which on Wednesday announced a $3.2 billion contract to supply more COVID vaccine doses to the United States, said they would have a substantial amount of BA.4/BA.5 vaccine ready for distribution by the first week of October. read more

Moderna said it would be late October or early November before it would have the newly modified vaccine ready.

Reporting by Michael Erman in New Jersey and Leroy Leo in Bengaluru; Editing by Jonathan Oatis and Bill Berkrot

Our Standards: The Thomson Reuters Trust Principles.

Source: Reuters

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