A feasibility study on exhaled breath analysis using UV spectroscopy to detect COVID-19.

A 23-subject feasibility study is reported to assess how UV absorbance measurements on exhaled breath samples collected from silicon microreactors can be used to detect COVID-19. The silicon microreactor technology chemoselectively preconcentrates exhaled carbonyl volatile organic compounds and subsequent methanol elution provides samples for analysis. The underlying scientific rationale that viral infection will induce an increase in exhaled carbonyls appears to be supported by the results of the feasibility study. The data indicate statistically significant differences in measured UV absorbance values between healthy and symptomatic COVID-19 positive subjects in the wavelength range from 235 nm to 305 nm. Factors such as subject age were noted as potential confounding variables.

Vaping Opioids: Should We Be Worried?

The use of electronic cigarettes (i.e., e-cigarettes or vapes) has increased substantially among youth and young adults. While research has examined vaping cannabis and tetrahydrocannabinol (THC), little exists related to vaping other drugs, such as opioids, despite the fact that opioids are a leading cause of drug overdoses associated deaths in the U.S. The current study aimed to review the current state of the literature related to vaping opioids given our experience of learning about a youth overdose related to vaping opioids in a public high school in the U.S. while we were engaged in conducting community-based research. Peer-reviewed research publications related to vaping opioids are minimal, although there are several newspaper articles published related to vaping opioids, with most being about youth vaping opioids in school. This is concerning given that media often misconstrue substance use, particularly related to fentanyl, and may provide inaccurate information that perpetuates stigma. Thus, it remains unclear the scope of the issue of vaping opioids. Therefore, we propose a call to action for researchers and public health officials outlining recommendations for increased surveillance, interventions to address vaping-related opioid use, and measures to curb serious adverse consequences of vaping-related opioid use to determine whether this is a rising public health concern and offer mitigation strategies.

Sexy, trashy, cool: Perceptions of electronic cigarette users across sociodemographic groups and E-cigarette use among United States Air Force Airmen.

E-cigarette use has increased in recent years. Military personnel have higher rates of e-cigarette use than civilian populations, with 15.3% of Air Force recruits using e-cigarettes. The current study assessed associations between perceptions of e-cigarette users and current use of e-cigarettes, and differences in sociodemographic characteristics to determine if there were different beliefs among different groups to inform intervention development among these straight-to-work young adults. Participants (N = 17,314) were United States Air Force Airmen (60.7% White, 29.7% women) who completed a survey during their first week of Technical Training. Regression results indicated that identifying as a man (B = 0.22, SE = 0.02), identifying as Black (B = 0.06, SE = 0.02), reporting younger age (B = -0.15, SE = 0.02), having less education (B = -0.04, SE = 0.02), and current e-cigarette use (B = 0.62, SE = 0.02) were associated with endorsing more positive e-cigarette user perceptions. Identifying as a woman (B = -0.04, SE = 0.02) and being younger (B = -0.06, SE = 0.02) were associated with endorsing more negative perceptions of e-cigarette users. Current e-cigarette use was inversely associated with negative e-cigarette user perceptions (B = -0.59, SE = 0.02). Differences across groups were found for individual e-cigarette user characteristics. Future intervention strategies among Airmen may benefit from addressing e-cigarette user perceptions to change use behaviors, as these perceptions may result in stigmatized beliefs related to e-cigarette users.

Distinction between Mitochondrial Antibody-Positive and -Negative Primary Biliary Cholangitis.

Antimitochondrial antibody-positive primary biliary cholangitis (AMA-pos PBC) is an autoimmune disorder in which monoclonal antibodies are produced against epitopes in the mitochondrial membranes of biliary epithelial cells, resulting in progressive nonsuppurative biliary cholangitis. Up to 5% of patients lack these autoantibodies, termed antimitochondrial antibody-negative (AMA-neg) PBC. Although a somewhat new variant of AMA-pos PBC, it is not an overlapping syndrome. Few studies to date have described this phenomenon. An 87-year-old woman was referred to our clinic with elevated serum alkaline phosphatase (714 U/L). She reported fatigue but no other symptoms. A physical examination revealed a benign lesion and bilateral lower extremity swelling secondary to lymphedema. The serological profile was significant for a high antinuclear antibody titer (>1:2,560) with a centromere pattern and negative for antimitochondrial antibody (AMA). The hepatitis panel was negative for viruses A, B, and C. Her serum immunoglobulin G level was 871 mg/dL (normal, <1,600 mg/dL). The rest of the serological tests, including anti-smooth muscle antibodies (ASMA) and anti-liver/kidney microsomal antibodies, were negative. Computed tomography of the abdomen and pelvis without contrast showed normal liver parenchyma and no acute intra-abdominal pathology. Histopathology indicated florid duct lesions. The background parenchyma showed no significant steatosis, and inflammatory changes were limited to the portal areas. Periodic acid-Schiff staining revealed intact hepatic parenchyma and architecture. The patient was diagnosed with AMA-neg PBC and responded well to ursodeoxycholic acid therapy. This case highlights the importance of recognizing AMA-neg PBC as a variant of AMA-pos PBC and differentiating between them. Autoimmune cholangitis is a vague and imprecise condition. All patients with AMA-negative PBC should be tested for other PBC-specific autoantibodies. Although the prognosis and bile duct damage and loss are worse in AMA-neg PBC for unknown reasons, treatment remains the same for both.

Motives of Tobacco Use Among Young Adults in the United States Air Force.

PURPOSE: Research has focused on cigarette use motives and have not included military personnel. The current study assessed tobacco use motives for different products, and differences within males and females and those with different racial identities given historical disparities in tobacco use. DESIGN: A cross-sectional survey about tobacco use was administered from October 2019 to February 2022. SETTING: Four Technical Training bases in the US. SAMPLE: Air Force Airmen who used tobacco (N = 3243). MEASURES: Questions were about sociodemographic characteristics, tobacco use, and the Tobacco Motives Inventory (representing affect regulation, boredom, enhancement, and social motives). ANALYSIS: Linear regressions assessed associations between overall tobacco use and motives. Stratified analyses assessed associations between tobacco use and motives among males and females, and individuals from different racial backgrounds. Logistic regressions assessed differences in motives and use of different tobacco products between "some day" and "everyday" users. RESULTS: Overall, boredom (B = .09, SE = .01) and affect regulation (B = .05, SE = .00) motives were associated with higher tobacco use. Males and females and individuals from different racial backgrounds endorsed different motives, but all endorsed boredom as a motive for higher tobacco use. Individuals who used cigarettes, e-cigarettes, or smokeless tobacco "some days" endorsed higher social motives than everyday users, but everyday users endorsed different motives across products. CONCLUSION: There are motives differentiating between "some day" and "everyday" users of tobacco products, which may need to be differentially targeted in intervention programs. Additionally, there are some overlapping motives (affect regulation, boredom) that may be beneficial to address with all tobacco users.

Analysis of a Broad Range of Carbonyl Metabolites in Exhaled Breath by UHPLC-MS.

Analysis of volatile organic compounds (VOCs) in exhaled breath (EB) has shown great potential for disease detection including lung cancer, infectious respiratory diseases, and chronic obstructive pulmonary disease. Although many breath sample collection and analytical methods have been developed for breath analysis, analysis of metabolic VOCs in exhaled breath is still a challenge for clinical application. Many carbonyl compounds in exhaled breath are related to the metabolic processes of diseases. This work reports a method of ultrahigh-performance liquid chromatography coupled with high-resolution mass spectrometry (UHPLC-MS) for the analysis of a broad range of carbonyl metabolites in exhaled breath. Carbonyl compounds in the exhaled breath were captured by a fabricated silicon microreactor with a micropillar array coated with 2-(aminooxy)ethyl-N,N,N-trimethylammonium (ATM) triflate. A total of six subgroups consisting of saturated aldehydes and ketones, hydroxy-aldehydes, and hydroxy-ketones, unsaturated 2-alkenals, and 4-hydroxy-2-alkenals were identified in the exhaled breath. The combination of a silicon microreactor for the selective capture of carbonyl compounds with UHPLC-MS analysis may provide a quantitative method for the analysis of carbonyls to identify disease markers in exhaled breath.

Lipid Peroxidation Produces a Diverse Mixture of Saturated and Unsaturated Aldehydes in Exhaled Breath That Can Serve as Biomarkers of Lung Cancer-A Review.

The peroxidation of unsaturated fatty acids is a widely recognized metabolic process that creates a complex mixture of volatile organic compounds including aldehydes. Elevated levels of reactive oxygen species in cancer cells promote random lipid peroxidation, which leads to a variety of aldehydes. In the case of lung cancer, many of these volatile aldehydes are exhaled and are of interest as potential markers of the disease. Relevant studies reporting aldehydes in the exhaled breath of lung cancer patients were collected for this review by searching the PubMed and SciFindern databases until 25 May 2022. Information on breath test results, including the biomarker collection, preconcentration, and quantification methods, was extracted and tabulated. Overall, 44 studies were included spanning a period of 34 years. The data show that, as a class, aldehydes are significantly elevated in the breath of lung cancer patients at all stages of the disease relative to healthy control subjects. The type of aldehyde detected and/or deemed to be a biomarker is highly dependent on the method of exhaled breath sampling and analysis. Unsaturated aldehydes, detected primarily when derivatized during preconcentration, are underrepresented as biomarkers given that they are also likely products of lipid peroxidation. Pentanal, hexanal, and heptanal were the most reported aldehydes in studies of exhaled breath from lung cancer patients.

Design of a randomized controlled trial to assess the comparative effectiveness of a multifaceted intervention to improve three-year adherence to colorectal cancer screening among patients cared for in rural community health centers.

Colorectal cancer (CRC) screening has been shown to decrease CRC mortality, yet significant disparities persist among those living in rural areas, from minority backgrounds, and those having low income. The purpose of this two-arm randomized controlled trial is to test the effectiveness and fidelity of a stepped care (increasing intensity as needed) approach to promoting 3-year adherence to CRC screening via fecal immunochemical testing (FIT) or colonoscopy in rural community clinics serving high rates of low-income and minority patients. We hypothesize that, compared to enhanced usual care (EUC), patients receiving the multifaceted CRC screening intervention will demonstrate higher rates of CRC screening completion over 3 years. Participants from six federally qualified health centers (FQHCs; N = 1200 patients) serving predominately low-income populations in rural Louisiana will be randomized to the intervention or EUC arm. All participants will receive health literacy-directed CRC counseling, simplified materials about both the FIT and colonoscopy procedures, and motivational interviewing to aid in the determination of test preference. Participants in the intervention arm will also receive motivational reminder messages from their primary care provider (via audio recording or tailored text) for either a scheduled colonoscopy or return of a completed FIT. Participants in the EUC arm will receive the standard follow-up provided by their clinic or colonoscopy facility. The primary outcome will be completion of either colonoscopy or annual FIT over 3 years. Results will provide evidence on the effectiveness of the intervention to decrease disparities in CRC screening completion related to health literacy, race, and gender. Trial registration:Clinicaltrials.gov Identifier NCT04313114.

Association between Perceived Discrimination and Vaping among College Students.

BACKGROUND: Perceived discrimination has been associated with a higher prevalence of e-cigarette use among adult samples. However, little is understood about the relationship between discrimination and various vaping behaviors among college students. Methods: College students completed an online survey about e-cigarette use (N = 488; 73.2% women; 52.7% White, 30.5% Black/African American, 6.1% Asian, 5.3% other races, 3.9% Multiracial). Participants completed the Everyday Discrimination Scale and identified which of their identities discrimination was most directed toward. Regressions, controlling for significant covariates of outcomes, examined discrimination in relation to e-cigarette ever use, current use, and frequency of use. Results: A higher discrimination score predicted greater odds of ever vaping compared with never use (OR = 1.21, p=.03). Controlling for race (p=.003), greater discrimination was related to increased likelihood of established vaping (100+ times) versus lighter levels of use (AOR = 1.22, p=.04). Discrimination was not associated with likelihood of current vaping (p>.05). Among e-cigarette users, greater perceived discrimination was related to an increased time spent vaping per day (ß =1.69, SE = 0.204, p=.05). Conclusions/Importance: Greater perceived discrimination was associated with more frequent vaping among college students. Current results extend previous findings by suggesting that among college e-cigarette users, those who experience discrimination are more likely to use these products frequently rather than experimentally. Findings can inform the identification and development of resources for students experiencing discrimination to prevent the uptake of e-cigarette use.

Follow-up approaches to a health literacy intervention to increase colorectal cancer screening in rural community clinics: A randomized controlled trial.

BACKGROUND: Significant disparities exist in colorectal cancer (CRC) screening rates among those of low socioeconomic status, with fewer years of education, lacking health insurance, or living in rural areas. METHODS: A randomized controlled trial was conducted to compare the effectiveness of 2 follow-up approaches to a health literacy intervention to improve CRC screening: automated telephone call or personal call. Patients aged 50 to 75 years residing in 4 rural community clinics in Louisiana were given a structured interview that assessed demographic, health literacy and CRC screening barriers, knowledge, and attitudes. All were given health literacy-informed CRC education, a patient-friendly CRC screening pamphlet, simplified fecal immunochemical test (FIT) instructions, and a FIT kit, and a "teach-back" method was used to confirm understanding. Patients were randomized to 1 of 2 telephone follow-up arms. If they did not mail their FIT kit within 4 weeks, they received a reminder call and were called again at 8 weeks if the test still was not received. RESULTS: A total of 620 patients were enrolled. Approximately 55% were female, 66% were African American, and 40% had limited literacy. The overall FIT completion rate was 68%: 69.2% in the automated telephone call arm and 67% in the personal call arm. Greater than one-half of the patients (range, 58%-60%) returned the FIT kit without receiving a telephone call. There was no difference noted with regard to the effectiveness of the follow-up calls; each increased the return rate by 9%. CONCLUSIONS: Providing FIT kits and literacy-appropriate education at regularly scheduled clinic visits with a follow-up telephone call when needed was found to increase CRC screening among low-income, rural patients. The lower cost automated call was just as effective as the personal call.

Diabetic Ketoacidosis-induced Hypertriglyceridemic Acute Pancreatitis Treated with Plasmapheresis-Recipe for Biochemical Disaster Management.

Diabetic ketoacidosis (DKA)-induced hypertriglyceridemia causing pancreatitis is an interesting phenomenon that has rarely been reported in literature. Plasmapharesis is a well known treatment modality for hypertriglyceridemia-induced pancreatitis. We report a patient with DKA-induced hypertriglyceridemic acute pancreatitis treated successfully with plasmapharesis.

Do probiotics have a role in the management of inflammatory bowel disease?

Inflammatory bowel disease treatments have generally revolved around immunological manipulations to reduce inflammation of the gastrointestinal tract. Bacterial interactions with the gastrointestinal epithelium may be a trigger for inflammatory changes which occur in the gut. Antibiotics have been shown to alter disease activity in Crohn's disease. Probiotics (live microorganisms) administered for therapeutic purposes have been proposed due to the possibility of their altering the interaction of the gut mucosa with enteric bacteria. Extensive randomized trials are lacking in this area at this time. Current trials indicate the possibility of maintaining remission in pouchitis (non-specific inflammation) and the potential for inducing and maintaining remission in ulcerative colitis. Trials in Crohn's disease have shown mixed results.