Search

Yeeun Kim,1,2,* Min-A Je,1,2,* Myeongguk Jeong,1,2 Hyeokjin Kwon,1,2 Aelee Jang,3 Jungho Kim,1,2 Go-Eun Choi1,2 1Department of Clinical Laboratory Science, College of Health Sciences, Catholic University of Pusan, Busan, 46252, Republic of Korea; 2Next-Generation Industrial Field-Based Specialist Program for Molecular Diagnostics, Brain Busan 21 Plus Project, Graduate School, Catholic University of Pusan, Busan, 46252, Republic of Korea; 3Department of Nursing, University of Ulsan, Ulsan, 44610, Republic of Korea*These authors contributed equally to this workCorrespondence: Go-Eun Choi; Jungho Kim, Department of Clinical Laboratory Science, College of Health Sciences, Catholic University of Pusan, Busan, 46252, Republic of Korea, Tel +82-51-510-0563 ; +82-51-510-0660, Fax +82-51-510-0568, Email gechoi@cup.ac.kr; jutosa70@cup.ac.krBackground: Paclitaxel (PTX) can induce chemotherapy-induced peripheral neuropathy (CIPN) as a side effect. The aim of this study was to understand the neurochemical changes induced by NGF/TrkA signaling in PTX-induced neuropathic pain.Methods: The PTX-induced CIPN mouse model was evaluated using nerve conduction velocity (NCV) and behavioral tests. Protein expression in mouse DRG was observed by Western blotting and immunohistochemistry. Nerve growth factor (NGF), IL-6, and IL-1β mRNA levels were determined using qRT-PCR by isolating total RNA from whole blood.Results: PTX showed low amplitude and high latency values in NCV in mice, and induced cold allodynia and thermal hyperalgesia in behavioral assessment. Activating transcription factor 3 (ATF3) and MAPK pathway related proteins (ERK1/2), tropomyosin receptor kinase A (TrkA), calcitonin gene related peptide (CGRP) and transient receptor potential vanilloid 1 (TRPV1) were upregulated 7th and 14th days after 2 mg/kg and 10 mg/kg of PTX administration. Protein kinase C (PKC) was upregulated 7th days after 10 mg/kg PTX treatment and 14th days after 2 mg/kg and 10 mg/kg PTX administration. NGF, IL-6, and IL-1β fold change values also showed a time- and dose-dependent increase.Conclusion: Taken together, our findings may improve our understanding of the nociceptive symptoms associated with PTX-induced neuropathic pain and lead to the development of new treatments for peripheral neuropathy.Keywords: Chemotherapy-induced peripheral neuropathy, paclitaxel, nerve growth factor, tropomyosin receptor kinase A, transient receptor potential vanilloid 1

Abstract The serine/glycine (ser/gly) synthesis pathway branches from glycolysis and is hyperactivated in approximately 30% of cancers. In ~13% of glioblastoma cases, we observed frequent amplifications and rare mutations in the gene encoding the enzyme PSPH, which catalyzes the last step in the synthesis of serine. This urged us to unveil the relevance of PSPH genetic alterations and subsequent ser/gly metabolism deregulation in the pathogenesis of glioblastoma. Primary glioblastoma cells overexpressing PSPH and PSPHV116I showed an increased clonogenic capacity, cell proliferation, and migration, supported by elevated nucleotide synthesis and utilization of reductive NAD(P). We previously identified sertraline as an inhibitor of ser/gly synthesis and explored its efficacy at suboptimal dosages in combination with the clinically pretested chloroquine to target ser/glyhigh glioblastoma models. Interestingly, ser/glyhigh glioblastomas, including PSPHamp and PSPHV116I, displayed selective synergistic inhibition of proliferation in response to combination therapy. PSPH knockdown severely affected ser/glyhigh glioblastoma clonogenicity and proliferation, while simultaneously increasing its sensitivity to chloroquine treatment. Metabolite landscaping revealed that sertraline/chloroquine combination treatment blocks NADH and ATP generation and restricts nucleotide synthesis, thereby inhibiting glioblastoma proliferation. Our previous studies highlight ser/glyhigh cancer cell modulation of its microenvironment at the level of immune suppression. To this end, high PSPH expression predicts poor immune checkpoint therapy responses in glioblastoma patients. Interestingly, we show that PSPH amplifications in glioblastoma facilitate the expression of immune suppressor galectin-1, which can be inhibited by sertraline treatment. Collectively, we revealed that ser/glyhigh glioblastomas are characterized by enhanced clonogenicity, migration, and suppression of the immune system, which could be tackled using combined sertraline/chloroquine treatment, revealing novel therapeutic opportunities for this subgroup of GBM patients.

Joo Sung Shim,1 Youhyun Kim,1 Taeho Yuh,1 Jii Bum Lee,2 Hye Ryun Kim,2 Min Hee Hong,2 Byoung Chul Cho,2 Sun Min Lim2 1Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea; 2Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of KoreaCorrespondence: Sun Min Lim, Division of Medical Oncology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea, Tel +82-2-2228-1946 ; +82-10-2520-3969, Email Limlove2008@yuhs.acPurpose: Small-cell lung cancer (SCLC) accounts for approximately 10– 15% of all lung cancers and is characterized by a high recurrence rate, early metastasis, and poor prognosis. Before the FDA approved lurbinectedin for SCLC that progressed on or after platinum-based chemotherapy in 2020, topotecan was the sole second-line option associated with hematological toxicities and modest efficacy. Lurbinectedin received conditional approval in Korea in September 2022 for metastatic SCLC progression, with the same indications. Real-world data on its efficacy remains scarce owing to its recent implementation.Patients and Methods: Patients with metastatic SCLC who progressed on or after first-line therapy (n = 51) at Yonsei Cancer Center, Seoul, received lurbinectedin at 3.2 mg/m². Efficacy data, including tumor response, progression, survival, and demographics, were recorded.Results: A total of fifty-one patients received lurbinectedin between April 2023 and March 2024, with thirty-four patients being eligible for the assessment. At diagnosis, approximately one-third of the patients were female, 3% had a poor performance status with an Eastern Cooperative Oncology Group Performance Score (ECOG PS ≥ 2), and the median age was 68. Most patients (80%) had extensive disease. Overall objective response rate (ORR) and disease control rate (DCR) were 20% and 47%, respectively. The median progression-free survival (PFS) was 2.8 months, and the median overall survival (OS) was 3.3 months. Never smokers showed prolonged OS compared with current/former smokers (Smokers; 3.0 vs 7.3 months). Common adverse effects were nausea (53%), loss of appetite (24%), general weakness (18%), anemia (29%), neutropenia (12%), dizziness (6%), alopecia (6%), thrombocytopenia (3%), and pneumonia (3%). Overall, 24% of the patients experienced grade ≥ 3 adverse events (AEs), with the most common being anemia (9%) and neutropenia (9%).Conclusion: Real-world data suggest that lurbinectedin is a viable option for patients with SCLC who have progressed on or after platinum-based chemotherapy.Keywords: SCLC, lurbinectedin, real-world evidence, second line

Wonnam Kim,1,* Yeon-Cheol Park,2,3,* Bonhyuk Goo,2 Jung-Hyun Kim,2 Dongwoo Nam,3,4 Eunseok Kim,5,6 Hyun-Jong Lee,7 Dong-Hyun Pyun,8,9 Hae Sun Suh,8– 10 Yoonsung Lee,11 Man S Kim,11 Byung-Kwan Seo,2,3 Yong-Hyeon Baek2,3 1Division of Pharmacology, School of Korean Medicine, Pusan National University, Yangsan, Republic of Korea; 2Department of Acupuncture & Moxibustion, Kyung Hee University College of Korean Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea; 3Department of Acupuncture & Moxibustion, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea; 4Department of Acupuncture & Moxibustion, Kyung Hee University College of Korean Medicine, Kyung Hee University Medical Center, Seoul, Republic of Korea; 5Division of Clinical Medicine, School of Korean Medicine, Pusan National University, Yangsan, Republic of Korea; 6Department of Acupuncture and Moxibustion Medicine, Pusan National University Korean Medicine Hospital, Yangsan, Republic of Korea; 7Department of Acupuncture & Moxibustion, College of Korean Medicine, Daegu Haany University, Daegu, Republic of Korea; 8Department of Regulatory Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea; 9Institute of Regulatory Innovation Through Science (IRIS), Kyung Hee University, Seoul, Republic of Korea; 10College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea; 11Clinical Research Institute, Kyung Hee University Hospital at Gangdong, School of Medicine, Kyung Hee University, Seoul, Republic of Korea*These authors contributed equally to this workCorrespondence: Yong-Hyeon Baek, Department of Acupuncture & Moxibustion, College of Korean Medicine, Kyung Hee University, Seoul, 02447, Republic of Korea, Tel +82 2 440 6099, Fax +82 2 440 714, Email byhacu@khu.ac.krPurpose: Knee osteoarthritis (KOA) is one of the most prevalent degenerative joint diseases worldwide. The herbal decoction, Dokhwalgisaeng-tang (DHGST), has been commonly used in East Asia to treat osteoarthritis. However, there is insufficient evidence to draw clear conclusions concerning its effectiveness and safety for patients with KOA. We aim to determine the efficacy, safety, and economic feasibility of DHGST compared with Celecoxib, an oral COX-2 inhibitor, for patients with degenerative KOA.Trial Design and Methods: This multicenter, randomized, noninferiority trial, involving 160 participants who will be randomized using block randomization with 1:1 allocation, will compare DHGST and Celecoxib. The total trial period is 24 weeks after random allocation, comprising 12 weeks of treatment and 12 weeks of follow-up. Participants with KOA will be administered 200 mg of DHGST (treatment group) or Celecoxib capsules (control group) for 12 weeks. Efficacy and safety evaluations will be conducted at weeks 0, 4, 8, and 12, and 24. The primary outcome measurement is the Korean Western Ontario McMaster score at week 12. Changes in pain intensity using a 100 mm visual analog scale, changes in quality of life using a EuroQol 5-dimension 5-level self-report survey, and patient satisfaction will also be measured to evaluate effectiveness between the two groups. A trial-based economic feasibility evaluation will be conducted to analyze treatment cost-effectiveness from societal and healthcare system perspectives. Drug safety will be assessed through adverse reactions and laboratory test findings.Discussion: This trial protocol has the following limitations. Applying a double-dummy design is not possible, as the tablet and granule forms can easily be distinguished visually, and achieving participant blinding is challenging. The trial findings are intended to inform participants, physicians, and other stakeholders in determining whether DHGST could be used as an alternative therapeutic option for KOA.Trial Registration Number: KCT0008424 (Clinical Research Information Service of the Republic of Korea), registered on 12 May 2023.Keywords: degenerative joint disease, Dokhwalgisaeng-tang, noninferiority trial, randomized controlled trial

Jungsang Kim,1,2,* Ju-Hyun Lee,3,* Dongbin Jeong,4 Taekyung Lim,4 Sangwoo Jung,4 Kwongil Paeng,4 Sangyoup Lee,4 Hyunki Cho,4 Seungyoup Lee,4 Ikdu Kim,4 Byungsoo Kang,5,6 Jae Hyo Kim,7 Hongmin Chu,8 Museok Hong4 1Department of Preventive Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea; 2Daeat Korean Medicine Clinic, Suwon, Kyunggi-do, Republic of Korea; 3Department of Medical Support, Imsil-Gun Medical Center, Imsil, Jeollabuk-do, Republic of Korea; 4Rodam Korean Medical Clinic Network, Seoul, Republic of Korea; 5Daeat Korean Medicine Hospital, Seoul, Republic of Korea; 6Gachon University, Seongnam-si, Gyeonggi-do, Republic of Korea; 7Department of Meridian & Acupoint, College of Korean Medicine, Wonkwang University, Iksan-si, Jeollabuk-do, Republic of Korea; 8Korean Medicine Convergence Research Information Center for Stroke, College of Korean Medicine, Wonkwang University, Gwangju, Republic of Korea*These authors contributed equally to this workCorrespondence: Hongmin Chu, Korean Medicine Convergence Research Information Center for Stroke, College of Korean Medicine, Wonkwang University, Hoejaero 1140-23, Republic of Korea, Email hongminchu2@gmail.com Museok Hong, Department of Korean Internal Medicine, College of Korean Medicine, Wonkwang University, 460, Iksan-daero, Iksan-si, Jeollabuk-do, Republic of Korea, Email hongbar21@hanmail.netPurpose: This study is a retrospective, multicenter research designed to report the efficacy of Korean medicine subcision therapies in scar treatment.Patients and Methods: Charts and photographs of 29 patients who received subcision treatment between May 2016 and June 2020 in four scar treatment network clinics were analyzed. The Qualitative Global Acne Scarring Grade System (QGASC) and the Stony Brook Scar Evaluation Scale (SBSES) were used to objectively measure scar scores.Results: Except for 4 patients whose GASGS and SBSES scores remained unchanged, most patients’ scars showed improvement from Visit 2 to about Visit 8. Furthermore, the degree of change for both scales was found to be statistically significant.Conclusion: Subcision therapy using acupuncture has been found to be an effective treatment for scar, with statistically significant improvements in patients’ SBSES and QGASC scores.Keywords: scar, Korean medicine, subcision, acupuncture

Myonghwa Park,1 Keunyeob Oh,2 Hyungjun Kim,3 Jongkun Jun,4 Jooyoung Kim,5 Thi-Thanh-Tinh Giap,6 Rhayun Song1 1College of Nursing, Chungnam National University, Daejeon, Republic of Korea; 2College of Economics and Management, Chungnam National University, Daejeon, Republic of Korea; 3School of Business, Chungnam National University, Daejeon, Republic of Korea; 4Division of Global Business and Technology, Hankuk University of Foreign Studies, Yongin, Republic of Korea; 5School of Business and Technology Management, College of Business, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea; 6College of Health Science, VinUniversity, Hanoi, VietnamCorrespondence: Rhayun Song, College of Nursing, Chungnam National University, Munwha-ro 266, Jung-Gu, Daejeon, 35015, Republic of Korea, Tel +82-10-3069-2214, Fax +82-42-580-8309, Email songry@cnu.ac.krPurpose: This study aims to explore how the relationship between information-seeking and infection-prevention behaviors through risk perception changes according to the level of trust in the media and government.Methods: The study is a secondary data analysis of data from a cross-sectional national survey of 700 adults living in the community, representing different age groups, genders, and geographic regions. A validated questionnaire was used to assess information-seeking behaviors, trust in media and government, and risk perception to explain infection-prevention behaviors in response to the COVID-19 pandemic. A conditional analysis was conducted using SPSS and PROCESS macro (Model 7) to identify the effect of moderated mediation.Results: The participants were fairly balanced by gender and age group. Most participants learned about COVID-19 through major broadcasts and television (56.7%) followed by internet media (21.7%). Information-seeking and risk perception together explained 17% of the variance in infection-prevention behaviors (F=63.95, p< 0.01). The standardized indirect effect (β=0.04, BootCI 0.02, 0.06) was significant at 95% CI. The moderated mediation index (M=− 0.04, CI − 0.05, − 0.01) indicates that trust in media and government influences the effect of information-seeking on risk perception and infection-prevention behavior even after controlling for age and gender.Conclusion: Information-seeking behaviors affect infection-prevention behaviors directly and indirectly through risk perception. Trust in media and government modulates this relationship, emphasizing the importance of establishing trust to promote effective risk communication and long-term public compliance with infection-prevention practices. Health authorities should focus on building trust through transparent risk communication and integrating diverse media perspectives. Further research is needed to explore the psychological and social mechanisms underlying trust in media and government through qualitative, cross-cultural comparisons.Keywords: conditional analysis, information-seeking, risk perception, protective behaviors, trust in media and government

Abstract Aims Parameters derived from reservoir‐excess pressure analysis have been demonstrated to predict cardiovascular events. Thus, altered reservoir‐excess pressure parameters could have a detrimental effect on highly‐perfused organs like the heart. We aimed to cross‐sectionally determine whether reservoir‐excess pressure parameters were associated with N‐terminal pro‐brain‐type natriuretic peptide (NT‐proBNP) in older adults. Methods We studied 868 older adults with diverse cardiovascular risk. Reservoir‐excess pressure parameters were obtained through radial artery tonometry including reservoir pressure integral, peak reservoir pressure, excess pressure integral (INTXSP), systolic rate constant (SRC) and diastolic rate constant (DRC). Plasma levels of NT‐proBNP, as a biomarker of cardiac overload, were analysed by the Proximity Extension Assay technology. Results Multivariable linear regression analyses revealed that all reservoir‐excess pressure parameters studied were associated with NT‐proBNP after adjusting for age and sex. After further adjustments for conventional cardiovascular risk factors, INTXSP [β = 0.191 (95% confidence interval, CI: 0.099, 0.283), P

C20H32N2S4W, monoclinic, C2/c (no. 15), a = 37.4033(15) Å, b = 17.2676(7) Å, c = 16.4860(6) Å, β = 109.319(1)°, V = 10,048.2(7) Å3, Z = 16, Rgt(F) = 0.0422, wRref(F2) = 0.0930, T = 223 K.

Once light is coupled to a photonic chip, its efficient distribution in terms of power splitting throughout silicon photonic circuits is very crucial. We present two types of 1 × 4 power splitters with different splitting ratios of 1:1:1:1 and 2:1:1:2. Various taper configurations were compared and analyzed to find the suitable configuration for the power splitter, and among them, parabolic tapers were chosen. The design parameters of the power splitter were determined by means of solving inverse design problems via incorporating particle swarm optimization that allows for overcoming the limitation of the intuition-based brute-force approach. The front and rear portions of the power splitters were optimized sequentially to alleviate local minima issues. The proposed power splitters have a compact footprint of 12.32 × 5 μm2 and can be fabricated through a CMOS-compatible fabrication process. Two-stage power splitter trees were measured to enhance reliability in an experiment. As a result, the power splitter with a splitting ratio of 1:1:1:1 exhibited an experimentally measured insertion loss below 0.61 dB and an imbalance below 1.01 dB within the bandwidth of 1,518–1,565 nm. Also, the power splitter with a splitting ratio of 2:1:1:2 showed an insertion loss below 0.52 dB and a targeted imbalance below 1.15 dB within the bandwidth of 1,526–1,570 nm. Such inverse-designed power splitters can be an essential part of many large-scale photonic circuits including optical phased arrays, programmable photonics, and photonic computing chips.

Ji-Hyun Kang,1,2,&ast; Jin-Hyuk Jeong,1,&ast; Yong-Bin Kwon,1 Young-Jin Kim,1 Dae Hwan Shin,1 Yun-Sang Park,3 Soonsil Hyun,1 Dong-Wook Kim,4 Chun-Woong Park1 1College of Pharmacy, Chungbuk National University, Cheongju, 28160, Republic of Korea; 2School of Pharmacy, Institute of New Drug Development, and Respiratory Drug Development Research Institute, Jeonbuk National University, Jeonju, Republic of Korea; 3Research & Development Center, P2K Bio, Cheongju, Republic of Korea; 4College of Pharmacy, Wonkwang University, Iksan, 54538, Republic of Korea&ast;These authors contributed equally to this workCorrespondence: Chun-Woong Park, College of Pharmacy, Chungbuk National University, Cheongju, 28160, Republic of Korea, Tel +82-43-261-3330, Fax +82-43-268-2732, Email cwpark@cbnu.ac.kr Dong-Wook Kim, College of Pharmacy, Wonkwang University, Iksan, 54538, Republic of Korea, Tel +82-63-229-7130, Fax +82-63-850-7309, Email pharmengin@gmail.comPurpose: Effective mucosal delivery of drugs continues to pose a significant challenge owing to the formidable barrier presented by the respiratory tract mucus, which efficiently traps and clears foreign particulates. The surface characteristics of micelles dictate their ability to penetrate the respiratory tract mucus. In this study, polymeric micelles loaded with insulin (INS) were modified using mucus-penetrative polymers.Methods: We prepared and compared polyethylene glycol (PEG)-coated micelles with micelles where cell-penetrating peptide (CPP) is conjugated to PEG. Systematic investigations of the physicochemical and aerosolization properties, performance, in vitro release, mucus and cell penetration, lung function, and pharmacokinetics/pharmacodynamics (PK/PD) of polymeric micelles were performed to evaluate their interaction with the respiratory tract.Results: The nano-micelles, with a particle size of < 100 nm, exhibited a sustained-release profile. Interestingly, PEG-coated micelles exhibited higher diffusion and deeper penetration across the mucus layer. In addition, CPP-modified micelles showed enhanced in vitro cell penetration. Finally, in the PK/PD studies, the micellar solution demonstrated higher maximum concentration (Cmax) and AUC0-8h values than subcutaneously administered INS solution, along with a sustained blood glucose-lowering effect that lasted for more than 8 h.Conclusion: This study proposes the use of mucus-penetrating micelle formulations as prospective inhalation nano-carriers capable of efficiently transporting peptides to the respiratory tract.Keywords: insulin, polyethylene glycol, cell-penetrating peptide, aerodynamic properties, mucus penetration

This study focused on enhancing the electrical conductivity of metal oxide nanosheet films by increasing the size of the nanosheets to promote the electron flow in the desired in-plane direction. We developed a method for increasing the size of RuO2 metal oxide nanosheets, a 2D material, by controlling the heat-treatment process. The size of the RuO2 nanosheets increased from 0.7 to 3.5 μm by modifying the heat-treatment conditions of KxRuO2, which was used as the precursor material. As a consequence, the electrical conductivity of the large-sized-RuO2 nanosheet-coated films was eight times higher than that of their small-sized counterparts. This lower resistance was attributed to the minimal number of contacts required for electron flow; the contact resistance between the nanosheets being higher than the intrinsic resistance. The proposed approach for enhancing the conductivity of metal oxide 2D materials is very promising and is expected to significantly contribute to the development of advanced flexible electronic devices.

Abstract Background An important methodological challenge in conducting pediatric economic evaluations is estimating the preference-based health-related quality of life (HRQoL) of children. Current methods are highly variable and there is no single instrument available to value HRQoL consistently across multiple pediatric age groups. The Pediatric Quality of Life Inventory (PedsQL) is a non-preference-based generic HRQoL instrument validated for children 2–18 years, but it cannot be directly used in economic evaluations. The aim of this study was to establish the core dimension structure of the PedsUtil health state classification system using confirmatory factor analysis, which is the first step of deriving a preference-based measure of HRQoL based on the PedsQL. Methods Four competing dimension structures of the PedsUtil health state classification system were developed based on published literature and expert opinion. Using data from the Longitudinal Study of Australian Children (LSAC) (n = 45,207), the 4 dimension structures were evaluated using the robust weighted least squares estimation method. The analyses were stratified by 2-year age intervals (from 2 to 17 years) to reflect the study design of the LSAC, as well as special healthcare needs status of the child. Model fit was evaluated by examining standardized factor loadings and various fit indices including the comparative fit index (CFI), Tucker-Lewis Index (TLI), and the root mean square error of approximation (RMSEA). Modification indices and residual correlations were examined to re-specify the models to improve model fit when necessary. Results The findings supported a 7-dimension structure (i.e., Physical Functioning, Pain, Fatigue, Emotional Functioning, Social Functioning, School Functioning, and School Absence) of the PedsUtil health state classification system. The 7-dimension model exhibited adequate fit across subgroups with CFI values that ranged from 0.929 to 0.954, TLI values from 0.916 to 0.946, and RMSEA values from 0.058 to 0.102. Conclusions This study established the core dimension structure of the PedsUtil health state classification system using confirmatory factor analysis. The 7-dimension structure was found to be applicable across diverse pediatric populations. Research is currently ongoing to select the most representative item within each dimension of the PedsUtil health state classification system and valuation surveys will be fielded to estimate the PedsUtil scoring system.

We propose a predictive model for various sensory textures utilizing machine learning techniques based on the largest rheology and panel-tested sensory texture database ever assembled. In addition to the conventional rheological parameters typically measured in the cosmetics field, rheological parameters obtained from the large amplitude oscillatory shear (LAOS) sequence of physical processes (SPPs) and extensional rheology analyses are employed as feature variables for the predictive model. These feature variables are chosen to mimic real flow conditions during the usage of cosmetics, such as rubbing and tapping, as they are expected to contain more information related to sensory textures. It has been demonstrated that our prediction model, based on the random forest regression algorithm, can effectively predict five sensory textures: spreadability, thickness, softness, adhesiveness, and stickiness. We investigated the rheological characteristics crucial for determining each sensory texture through permutation and feature importance analyses. The important analysis highlighted the close correlation between rheological parameters from LAOS–SPP, extensional analyses, and sensory textures. By using this correlation, we interpret the perception of each sensory texture in the context of rheology.

Abstract Background Cardiometabolic risk factors among youth are rising. Epigenetic age acceleration, a biomarker for aging and disease-risk, has been associated with adiposity in children, but its association with other cardiometabolic risk markers remains understudied. We employed data from the Health Outcomes and Measures of the Environment (HOME) study, a prospective pregnancy and birth cohort in the greater Cincinnati metropolitan area, to examine whether accelerated epigenetic age at birth as well as accelerated epigenetic age and faster pace of biological aging at age 12 years were associated with higher cardiometabolic risk in adolescents. Results After adjusting for potential confounders, including estimated cell type proportions, epigenetic gestational age acceleration at birth, derived from the Bohlin, Knight, and Haftorn clocks using cord blood DNA methylation data, was not associated with cardiometabolic risk z-scores or individual cardiometabolic risk score components (visceral fat, leptin to adiponectin ratio, HOMA-IR, triglycerides to HDL-C ratio, HbA1c, or systolic blood pressure) at age 12 years. We also did not observe any associations of epigenetic age acceleration, calculated with Horvath’s skin and blood, Hannum’s, and Wu’s epigenetic clocks using peripheral blood at age 12 years, with these same cardiometabolic risk markers. In contrast, faster pace of biological aging was associated with higher cardiometabolic risk [βs (95% CIs)] cardiometabolic risk score 0.25 (0.07, 0.42); visceral fat 0.21 (0.05, 0.38); and hemoglobin A1c 0.23 (0.05, 0.41) per standard deviation increase in pace of biological aging. Faster pace of biological aging was also positively associated with systolic blood pressure, triglycerides to HDL-C ratio, HOMA-IR, and leptin to adiponectin ratio, although these associations were not statistically significant. Conclusions Our findings provide evidence that faster pace of biological aging was associated with higher cardiometabolic risk score, visceral fat, and HbA1c at age 12 years. Further research is needed to determine whether these associations persist from adolescence through adulthood.

Consumers recognize the appearance and texture of fabric through viewing photographic images on E-commerce. However, the relationship between evaluations of the actual fabric and its image remains unclear. To understand the evaluation difference between actual fabric and its image, we investigated the relationship of visual evaluations including the price evaluation between actual white fabrics used for dress shirts and their photographic images concerning the online purchase of items presented by their photos. Participants evaluated the impressions of 24 white fabrics (actual fabrics and their images), comparing them with a standard white fabric. Participants also estimated the prices of shirts hypothetically made from different fabrics. We compared the difference between the results for actual fabrics and images. We also carried out a principal component analysis of those impressions and examined the relationship among principal component analysis results, weave structure, and fabric materials and price estimation. In a comparison of actual fabric and image evaluations, the impression of glossiness and brightness differed, with the actual fabrics being rated significantly higher in terms of glossiness and brightness. These differences are due to the difference in media (i.e., direct viewing versus screen display), although the visual environment of the lighting and displays may have had an effect. In principal component analysis, the first principal components were Delicateness and Glossiness for both actual fabrics and their images. The second principal components were Lightness and Coolness for the images of fabrics and Lightness, Coolness, and Softness for the actual fabrics. Fabrics evaluated highly in the first principal component had high price estimations. Thus, it is clear that Delicateness and Glossiness affected the price evaluation for both actual white fabrics and their images. Fabrics with a high value of Delicateness and Glossiness were a poplin made of at least 95% cotton. In contrast, fabrics containing linen and having a small repeating dobby pattern with roughness were evaluated as having low Delicateness and Glossiness and were assessed at a lower price. Additionally, even in the case of blended fabrics such as a cotton–polyester fabric, the expected price was high for diagonal patterns such as stripes and checks. These results will be helpful in the procurement of fabrics with which to make clothing and in the marketing of clothing for E-commerce.

Abstract Background Individuals with diabetes and co-existing psychiatric disorders have more diabetes complications and lower life expectancy than those with diabetes but no co-existing psychiatric disorders. Psychiatric health professionals may have a role in improving these outcomes but often lack diabetes knowledge and skills. This study aims to examine the effectiveness of a diabetes training course for psychiatric health professionals on their diabetes knowledge and skills and clinical outcomes, diabetes support and diabetes distress among individuals with diabetes and psychiatric disorders treated in psychiatric outpatient clinics. Methods A pragmatic non-randomized controlled cluster trial was conducted in eight psychiatric outpatient clinics in Denmark. All psychiatric health professionals from four clinics participated in the diabetes training course (the intervention) and completed a questionnaire on experience of the training course and a 20-item pre- and post-test to measure diabetes knowledge and skills. Difference in pre- and post-tests were analyzed using t-tests. From August 2018 – June 2019, individuals with diabetes were recruited from the intervention clinics (n = 49) and from four control clinics continuing usual clinical practice (n = 57). Differences in clinical outcomes, diabetes support and diabetes distress between the intervention and control groups at six and 12 months after the training course, were analyzed using logistic and linear regression models adjusted for baseline levels. Results Psychiatric health professionals (n = 64) had more correct answers after completing the course, with a mean increase of 6.3 [95% CI 5.6 to 7.0] correct answers. A total of 49 and 57 individuals were recruited for the intervention and control group, respectively. At follow-up, individuals treated in the intervention group had lower levels (clinical improvement) of systolic blood pressure, but had lower receipt of annual assessment of blood pressure, and body mass index (BMI) (worsening of process measures). While there were observed differences in odds and means for several other outcomes, none of these received statistical significance (see Table 2 and Fig. 2). Conclusions Training psychiatric health professionals in diabetes care improved their diabetes knowledge and skills and improved clinical levels of systolic blood pressure in individuals treated in the intervention group. However, this training intervention was associated with a lower likelihood of receiving annual assessment of blood pressure and BMI. Trial registration ISRCTN registry registration number ISRCTN15523920, registration date: 02/10/2019.

Abstract Accurate repair of DNA damage is critical for maintenance of genomic integrity and cellular viability. Because damage occurs non-uniformly across the genome, single-cell resolution is required for proper interrogation, but sensitive detection has remained challenging. Here, we present a comprehensive analysis of repair protein localization in single human cells using DamID and ChIC sequencing techniques. This study reports genome-wide binding profiles in response to DNA double-strand breaks induced by AsiSI, and explores variability in genomic damage locations and associated repair features in the context of spatial genome organization. By unbiasedly detecting repair factor localization, we find that repair proteins often occupy entire topologically associating domains, mimicking variability in chromatin loop anchoring. Moreover, we demonstrate the formation of multi-way chromatin hubs in response to DNA damage. Notably, larger hubs show increased coordination of repair protein binding, suggesting a preference for cooperative repair mechanisms. Together, our work offers insights into the heterogeneous processes underlying genome stability in single cells.

Abstract Background Post-Therapy-Pneumonitis (PTP) is a critical side effect of both, thoracic radio(chemo)therapy (R(C)T) and immune checkpoint inhibition (ICI). However, disease characteristics and patient-specific risk factors of PTP after combined R(C)T + ICI are less understood. Given that RT-triggered PTP is strongly dependent on the volume and dose of RT [1], driven by inflammatory mechanisms, we hypothesize that combination therapy of R(C)T with ICI influences the dose-volume-effect correlation for PTP. This study focuses on the development of a method for evaluation of alterations of dosimetric parameters for PTP after R(C)T with and without ICI. Methods and materials PTP volumes were delineated on the follow-up diagnostic Computed Tomography (CT) and deformably matched to the planning CT for patients with PTP after thoracic R(C)T + ICI or R(C)T. Dose data was converted to 2-Gy equivalent doses (EQD2) and dosimetrically analyzed. Dosimetric and volumetric parameters of the segmented PTP volumes were analyzed. The method was exemplarily tested on an internal patient cohort including 90 patients having received thoracic R(C)T + ICI (39) and R(C)T (51). Thirtytwo patients with PTP were identified for further analysis. Additional data on previous chemotherapy, RT, smoking status and pulmonary co-morbidity were conducted. A matched pair analysis with regard to planning target volumes (PTV) was conducted for curative intended (definitive) and palliative patient cohorts individually. Results The presented method was able to quantify and compare the dosimetric parameters of PTP for the different therapies. For our study group, no significant differences between R(C)T + ICI and R(C)T only was observed. However, the dosimetric analysis revealed large volumetric fractions (55%) of the PTP volumes to be located outside of high dose (EQD2

Abstract Background In paediatric palliative care, children with life-threatening and life-limiting conditions, their families, and their health care professionals often face difficult decisions about treatment, goals of care, and delivery of care. Advance care planning and shared decision-making are strategies that can improve quality of care by discussing goals and preferences on future care. In this paper, we provide recommendations that aim to optimise advance care planning and shared decision-making in paediatric palliative care in the Netherlands. Methods A multidisciplinary guideline panel of 20 experts in paediatric palliative care and nine (bereaved) parents was established to develop recommendations on advance care planning and shared decision-making. We performed systematic literature searches to identify quantitative and qualitative evidence and used the GRADE (CERQual) methodology for appraisal of evidence. Recommendations were formulated based on quantitative and qualitative evidence, clinical expertise, and patient and family experiences. Results We identified 4 RCTs that reported on the effect of advance care planning interventions in paediatric palliative care and 33 qualitative studies on barriers and facilitators to advance care planning and shared decision-making. We formulated 28 strong recommendations in close collaboration with a multidisciplinary guideline panel that provide guidance to offer advance care planning and shared decision-making, involve children and their family, and communicate information about care and treatment. Conclusion The identified evidence and recommendations support the use of advance care planning and shared decision-making in paediatric palliative care. However, we found several knowledge gaps that should be addressed. As advance care planning and shared decision-making require specific skills and can be time-consuming, we emphasise the importance of education, adequate staffing and sufficient funding to improve integration in clinical practice. We do believe that our recommendations can be used as a starting point to develop recommendations in other countries. However, country-specific factors should be very carefully considered before applying any recommendations in other countries.

Background: Cardiac magnetic resonance (CMR)-guided catheter ablation of the cavotricuspid isthmus (CTI) has been proven feasible, but determinants of local electrogram (EGM) voltage drops during radiofrequency (RF) applications are unknown. Objective: The purpose of this study was to investigate local atrial bipolar EGM voltage drops and the association with delivered RF energy and anatomical information derived from peri-procedural CMR imaging. Methods: In consecutive patients undergoing CMR-guided CTI ablation procedures, relative EGM voltage drops for RF applications ≥20 seconds were calculated. Pre- and post-ablation CMR imaging was performed. Associations of relative EGM voltage drops with patient characteristics, delivered RF energy, and CTI anatomy were analyzed. Results: In total, 216 RF applications were evaluated from 12 patients (18 ± 5 applications/patient). EGM voltage amplitude at baseline was significantly higher in the group with the strongest relative EGM voltage drop (P < .05), whereas RF ablation settings (duration, power, temperature) and lesion characteristics (impedance drop, slope of impedance drop) did not differ. The EGM voltage amplitude at baseline (P < .001), left ventricular ejection fraction (LVEF) (P = .020), right atrium volume index (RAVI) (P = .027), and CTI line length (P = .026) showed the strongest association with relative EGM voltage drop. Four of 12 patients (33%) underwent a re-do procedure, 2 patients showed a regional late reconnection, which could be visually identified in the T2-weighted images (T2WI) of the index procedure. Conclusion: Local EGM voltage amplitude, LVEF, RAVI, and CTI length are associated with relative EGM voltage drop during CMR-guided CTI ablation. Post-ablation CMR imaging during the index procedure may help to identify areas of late reconnection.

James V Gruber,1 Nicole Terpak,2 Sebastien Massard,2 Xiang Chen,2 Yurah Kim2 1Research, Vantage, Fairfield, NJ, USA; 2Research, Vantage, Warren, NJ, USACorrespondence: James V Gruber, Email vincent.gruber@vantagegrp.comIntroduction: It is well established that Cutibacterium acnes (C. acnes) is a common skin commensal microorganism that has been linked to acne. In acne flare-ups, C. acnes can be found in abundant levels within the inflammatory lesions (called comedones) associated with the skin disease. Recently, it was reported that 3D reconstructed human epidermis (RHE) treated with viable cultures of C. acnes can elicit β-defensin antimicrobial peptide responses in the skin and can weaken the skin barrier of the RHE after three days of exposure to C. acnes.Methods: Employing a modification of this in vitro assay, RHE was pretreated with C. acnes for 48 hours, then further treated with a mixture of water-soluble polysaccharides (STRATAPHIX™ POLY, “Polysaccharide Blend”) previously shown to reduce inflammasome-mediated inflammatory responses in normal human epidermal keratinocytes (NHEK). Two inflammasome-mediated inflammation markers were tested, including caspase-1, a potent protease enzyme activated by NOD-like receptor protein (NLRP)-induced inflammasome activation, and interleukin-1β (IL-1β), a cytokine which is activated from inactive pro-IL-1β by caspase-1.Results: The treatment of the RHE tissues with C. acnes for 48 hours elicited an inflammatory response measured with both markers compared against untreated tissues. Treatment of the tissues with 1% and 2% salicylic acid for 24 hours after C. acnes treatment increased the inflammatory response measured with both markers. Application of the water-soluble polysaccharides in combination with 1% and 2% of salicylic acid significantly reduces expression of both active caspase-1 and IL-1β compared against the tissues treated with C. acnes and salicylic acid alone.Discussion: The results lend further support to previously reported work which was done on NHEKs treated with ultraviolet B (UVB) light and adenosine triphosphate (ATP) and demonstrate that the same mixture of polysaccharides can have a modulating effect against bacterial and chemical induced inflammation in RHE.Keywords: Cutibacterium acnes, In vitro, tissues, inflammation, caspase-1, IL-1β, topical

If T1{{\mathbb{T}}}_{1} and T2{{\mathbb{T}}}_{2} are commuting dd-tuples of Hilbert space operators in B(ℋ)dB{\left({\mathcal{ {\mathcal H} }})}^{d} such that (T1*⊗I+I⊗T2*,T1⊗I+I⊗T2)\left({{\mathbb{T}}}_{1}^{* }\otimes I+I\otimes {{\mathbb{T}}}_{2}^{* },{{\mathbb{T}}}_{1}\otimes I+I\otimes {{\mathbb{T}}}_{2}) is strictly mm-isometric (resp., mm-symmetric) for some positive integer mm, then there exist a scalar dd-tuple λ\lambda and positive integers mi{m}_{i}, 1≤i≤21\le i\le 2, such that m=m1+2m2−2m={m}_{1}+2{m}_{2}-2, (T1*+λ¯,T1+λ)\left({{\mathbb{T}}}_{1}^{* }+\overline{\lambda },{{\mathbb{T}}}_{1}+\lambda ) is m1{m}_{1} isometric, and T2−λ{{\mathbb{T}}}_{2}-\lambda is m2{m}_{2}-nilpotent (resp., m=m1+m2−1m={m}_{1}+{m}_{2}-1, (T1*+λ¯,T1+λ)\left({{\mathbb{T}}}_{1}^{* }+\overline{\lambda },{{\mathbb{T}}}_{1}+\lambda ) is m1{m}_{1}-symmetric and (T2*−λ¯,T2−λ)\left({{\mathbb{T}}}_{2}^{* }-\overline{\lambda },{{\mathbb{T}}}_{2}-\lambda ) is m2{m}_{2} symmetric).

Evaluating the credibility of online information, a key component of digital literacy, is challenging for secondary students because they often rely on superficial strategies that do little to help them differentiate between information and disinformation. For example, our research has shown that students are prone to believe sites that appear professional but are in fact of a more nefarious nature (e.g., fake news sites designed to intentionally deceive). For this Description of Classroom Practices report, we describe a series of six lessons that we designed with secondary EAL teachers that help students think critically about online information while supporting their growth as additional language learners. We found that the lessons helped students evaluate the credibility of online sources holistically by evaluating within and across content, source, and context. After reporting the students’ overall positive comments about the materials, we describe their favourite activity in more detail with scaffolding suggestions.

Abstract Background Early diagnosis of large vessel occlusion (LVO) in acute stroke often requires CT angiography (CTA). Automated CT perfusion (CTP) software, which identifies blood flow abnormalities, enhances LVO diagnosis and patient selection for endovascular thrombectomy (EVT). This study evaluates the sensitivity of automated CTP images in detecting perfusion abnormalities in patients with acute ischemic stroke (AIS) and LVO or medium vessel occlusion (MeVO), compared to CTA. Methods We screened acute ischemic stroke patients presenting within 24 h who underwent CT, CTA, and CTP as per institutional protocol. RAPID AI software processed CTP images, while neuroradiologists reviewed CTA for intracranial arterial occlusions. Sensitivity, specificity, and accuracy of automated CTP maps in detecting occlusions were assessed. Results Of 790 screened patients, 31 were excluded due to lack of RAPID CTP data or poor‐quality scans, leaving 759 for analysis. The median age was 71 years (IQR: 61–81), with 47% female. Among them, 678 had AIS, and 81 had AIS ruled out. CTA identified arterial occlusion in 562 patients (74%), with corresponding CTP abnormalities in 537 patients (Tmax > 6 sec). In the 197 without occlusion, CTP was negative in 161. Automated CTP maps had a sensitivity of 95.55% (CI 95: 93.50–97.10%), specificity of 81.73% (CI 95: 75.61–86.86%), negative predictive value of 98.22% (CI 95: 97.39–98.79%), positive predictive value of 63.54% (CI 95: 56.46–70.09%), and overall accuracy of 85.18% (CI 95: 82.45–87.64%). Conclusions Automated CTP maps demonstrated high sensitivity and negative predictive value for LVOs and MeVOs, suggesting their usefulness as a rapid diagnostic tool, especially in settings without expert neuroradiologists.

Abstract Background Co-production is increasingly used in mental health research and clinical settings. Maze Out is a digital game co-produced by clinicians, patients with eating disorders (EDs), an art director with lived experience in EDs, and a game-developing company. Maze Out is based on everyday challenges when suffering from EDs and is currently being evaluated as a supplement tool in EDs treatment. Several studies on co-producing mental health interventions focus on design and effectiveness, but the experiences of those involved in the co-production process remain unexplored. An in-depth exploration of stakeholders’ experiences offers valuable insights into the impact of co-production on different groups and generates crucial knowledge for successful implementation. Objectives This study evaluated and explored the co-production process and the meaning that EDs patients, clinicians, and game designers attributed to their participation in the co-production of Maze Out. The objectives were to determine (1) how stakeholders experienced their collaboration in the co-production of Maze Out.; and (2) to what extent the stakeholders involved in developing Maze Out followed Cahn’s principles of equality, diversity, accessibility, and reciprocity. Methods Five stakeholders (two patients, two clinicians, and a game designer) who participated in the co-production completed semi-structured interviews. Two patients and one clinician’s diaries supplemented the interviews. Reflexive thematic analysis was used to interpret the data. Results The results of this study highlight the importance of building a common language between clinicians, patients, and other professionals involved in developing new forms of treatment and interventions. A recommendation for researchers and clinicians to implement co-production in the future is that Cahn’s principles: equality, reciprocity, accessibility, and diversity, serve as a strong foundation for successful co-production. In this study, three and partially one of the four Cahn’s principles about co-production were identified: equality, reciprocity, and accessibility. When applied in an ED context, these principles provided stakeholders with valuable insights, enriching practice-based knowledge, using the knowledge applicable to clinical practice, and demonstrating their crucial role in fostering effective co-production processes.

Abstract Atmospheric new particle formation (NPF) is a naturally occurring phenomenon, during which high concentrations of sub-10 nm particles are created through gas to particle conversion. The NPF is observed in multiple environments around the world. Although it has observable influence onto annual total and ultrafine particle number concentrations (PNC and UFP, respectively), only limited epidemiological studies have investigated whether these particles are associated with adverse health effects. One plausible reason for this limitation may be related to the absence of NPF identifiers available in UFP and PNC data sets. Until recently, the regional NPF events were usually identified manually from particle number size distribution contour plots. Identification of NPF across multi-annual and multiple station data sets remained a tedious task. In this work, we introduce a regional NPF identifier, created using an automated, machine learning based algorithm. The regional NPF event tag was created for 65 measurement sites globally, covering the period from 1996 to 2023. The discussed data set can be used in future studies related to regional NPF.

Abstract Shortly after the first case of SARS-CoV-2 was diagnosed a public health emergency (PHE) was declared and a multi-agency response was initiated within the US federal government to create and propagate testing capacity. As part of this response, an unprecedented program designated Rapid Acceleration of Diagnostics (RADx) Tech was established by the National Institutes of Health (NIH) to facilitate the development of point-of-care tests for the COVID-19. The RADx Tech Clinical Studies Core (CSC), located at the University of Massachusetts Chan Medical School (UMass Chan), with partnering academic, private, and non-governmental organizations around the country, was tasked with developing clinical studies to support this work. This manuscript details development of a biorepository specifically focused on the collection and storage of samples designed for diagnostic platform development. It highlights the unified collection and annotation process that enabled gathering a diverse set of samples. This diversity encompasses the geography and backgrounds of the participants as well as sample characteristics such as variant type and RT-PCR cycle threshold (CT) value of the corresponding reference sample on a uniform clinical reference platform.

Abstract Background The purpose of this study was to identify and describe common views of people with lived experience of mental health challenges – consumers and carers, families and supporters – of what they consider the most important measures to include in health economic evaluations which assess the incremental value of competing options in mental health care. Methods Participants (n = 111) were people living in the state of Victoria, Australia, who identified as consumers of mental healthcare (n = 38); carers, family members and/or supporters (n = 43); or both (n = 30). Factor analysis based on Q-Methodology was used to identify clusters of people who hold similar viewpoints. Common viewpoints were described in terms of the characteristics of the group, and a qualitative interpretation was conducted on the basis of distinguishing statements and quotes provided in participants’ own words. Results We identified four common views: (1) safety before all else, prioritizing physical, sexual and psychological safety; (2) hope and partnership in processes of care; (3) physical and emotional health and wellbeing; and (4) care access, continuity and partnership with families. Although different priorities were identified for each viewpoint, key priority areas that were common to all views were having an environment in the health service that fosters respect and dignity, and that consumers feel heard and listened to. In sub-group and qualitative analyses, differences were observed regarding the likelihood of consumers and carers holding each of the views, as well as by age group. Conclusions While some differences were noted between the views of consumers and carers and different age groups, there was also common ground regarding what outcomes are of most importance to measure. Including these measures in evaluation frameworks would provide a way of focussing mental healthcare decisions on the aspects of mental healthcare that are of most value to consumers and carers, thereby addressing an important shortcoming of current approaches to decision-making in mental healthcare.

Abstract In this perspective, we highlight and reflect on the current knowledge with respect to serine/glycine metabolism in cancer, therapeutic resistance, and precision medicine opportunities for therapeutic targeting and treatment follow-up. Cancer subtypes with high mortality rates include lung cancer and glioblastomas. In order to improve future therapeutic opportunities, patient stratification need to be performed to select patients that might benefit from adjuvant serine/glycine targeting compounds. In an effort to identify the group of patients for stratification purposes, we analyzed publicly available TCGA patient datasets to test associations between serine/glycine metabolism enzyme expression and important cancer drivers in lung cancer and glioblastoma. These patients presenting serine/glycine pathway overexpression might benefit from adjuvant sertraline treatment in the future.

Abstract As SARS-CoV-2 continues to evolve antigenically to escape vaccine- or infection-induced immunity, suitable animal models are needed to study novel interventions against viral variants. Syrian hamsters are often used because of their high susceptibility to SARS-CoV-2 and associated tissue damage in the respiratory tract. Here, we established a direct-contact transmission model for SARS-CoV-2 Omicron BA.5 in hamsters. First, we determined whether 103 or 104 TCID50 in a low-volume inoculum led to reproducible infection and viral shedding in male and female hamsters. Next, we determined the optimal co-housing timing and duration between donor and recipient hamsters required for consistent direct-contact transmission. Finally, we compared viral loads and histopathological lesions in the respiratory tissues of donor and recipient hamsters. Intranasal inoculation of hamsters with 103 TCID50 and 104 TCID50 Omicron BA.5 in 10 µl per nostril led to reproducible infection. Viral loads in the throat measured by RT-qPCR were comparable between male and female hamsters. Notably, the shedding of infectious virus was significantly higher in male hamsters. Compared to SARS-CoV-2 D614G, Omicron BA.5 infection reached lower viral loads, had a delayed peak of virus replication, and induced limited body weight loss. To ensure consistent direct-contact transmission from inoculated donor hamsters to naïve recipients, a co-housing duration of 24 h starting 20 h post-infection of the donors was optimal. We detected mild inflammation in the respiratory tract of donor and recipient hamsters, and viral loads were higher and peaked earlier in donor hamsters compared to recipient hamsters. Taken together, we developed a robust Omicron BA.5 direct-contact transmission model in hamsters, that provides a valuable tool to study novel interventions.