The germ cell-specific RNA binding protein RBM46 is essential for spermatogonial differentiation in mice.

Control over gene expression is exerted, in multiple stages of spermatogenesis, at the post-transcriptional level by RNA binding proteins (RBPs). We identify here an essential role in mammalian spermatogenesis and male fertility for 'RNA binding protein 46' (RBM46). A highly evolutionarily conserved gene, Rbm46 is also essential for fertility in both flies and fish. We found Rbm46 expression was restricted to the mouse germline, detectable in males in the cytoplasm of premeiotic spermatogonia and meiotic spermatocytes. To define its requirement for spermatogenesis, we generated Rbm46 knockout (KO, Rbm46-/-) mice; although male Rbm46-/- mice were viable and appeared grossly normal, they were infertile. Testes from adult Rbm46-/- mice were small, with seminiferous tubules containing only Sertoli cells and few undifferentiated spermatogonia. Using genome-wide unbiased high throughput assays RNA-seq and 'enhanced crosslinking immunoprecipitation' coupled with RNA-seq (eCLIP-seq), we discovered RBM46 could bind, via a U-rich conserved consensus sequence, to a cohort of mRNAs encoding proteins required for completion of differentiation and subsequent meiotic initiation. In summary, our studies support an essential role for RBM46 in regulating target mRNAs during spermatogonia differentiation prior to the commitment to meiosis in mice.

Exploring the Strategic Use of TikTok for Clinical Trial Recruitment: How audiences' Prior Short-Form Video Usage Influences Persuasive Effects.

Guided by the elaboration likelihood model and framing theory, this study explores the potential of short-form video platforms (e.g. TikTok), for targeted clinical trial recruitment. An online experiment compared doctor vs. peer-led videos addressing logistical or psychological barriers to participation, mimicking common TikTok communication tactics. Results indicate that high (vs. low) TikTok users are more persuaded by recruitment messages, and they exhibit stronger intentions to participate in clinical trials. Although doctor-sourced messages generate greater credibility and a more favorable message attitude, peer-sourced messages may be more effective in increasing participation intention. Lastly, doctor-sourced videos that address logistical barriers and peer-sourced videos that discuss psychological barriers result in higher self-efficacy for clinical trial participation. This study contributes to the growing body of research on new media's role in health communication and provides insights into how to strategically utilize TikTok and other short-form video platforms for clinical trial recruitment.

"Trust Me, I'm a Doctor." How TikTok Videos from Different Sources Influence Clinical Trial Participation.

This study experiments with TikTok videos to promote clinical trial participation. More specifically, it examines how short-form video sources (doctors vs. prior volunteers for clinical trials) influence perceived source credibility, self-efficacy, and behavioral intention to participate in clinical trials. Findings from this online experiment (N = 396) showed that doctor sources led to greater behavioral intention through enhancing source credibility compared to prior volunteer sources. Alternatively, prior volunteer sources increased behavioral intention via enhanced self-efficacy for participants with low trust in doctors. These findings contribute to the understanding of how short-form video sources act as heuristic cues, leading to persuasion outcomes. Overall, we recommend featuring doctors when using video-based messages to promote clinical trial participation. Also, this study emphasizes the need for health communication practitioners to consider prior volunteers as spokespersons when targeting populations with low baseline trust in doctors.

Using Short-Form Videos to Get Clinical Trial Newcomers to Sign Up: Message-Testing Experiment.

BACKGROUND: Recruiting participants for clinical trials poses challenges. Major barriers to participation include psychological factors (eg, fear and mistrust) and logistical constraints (eg, transportation, cost, and scheduling). The strategic design of clinical trial messaging can help overcome these barriers. While strategic communication can be done through various channels (eg, recruitment advertisements), health care providers on the internet have been found to be key sources for communicating clinical trial information to US adults in the social media era. OBJECTIVE: This study aims to examine how communication source (ie, medical doctors and peers) and message framing of TikTok videos (ie, psychological and logistical framing) influence clinical trial-related attitudes, perceptions, and sign-up behaviors under the guidance of the integrated behavioral model. METHODS: This study used a 2 (source: doctor vs peer) × 2 (framing: psychological vs logistical) between-participant factorial design web-based experiment targeting adults in the United States who had never participated in clinical trials (ie, newcomers). A Qualtrics panel was used to recruit and compensate the study respondents (n=561). Participants viewed short-form videos with doctors or peers, using psychological or logistical framing. The main outcome measures included perceived source credibility, self-efficacy, attitude toward clinical trial participation, behavioral intention, and sign-up behavior. Structural equation modeling was used to analyze the direct and indirect effects of message factors on the outcome variables. Source (doctor=1; peer=0) and framing (psychological=1; logistical=0) were dummy-coded. RESULTS: Doctor-featured messages led to greater perceived source credibility (ß=.31, P<.001), leading to greater self-efficacy (95% CI 0.13-0.30), which in turn enhanced behavioral intention (95% CI 0.12-0.29) and clinical trial sign-up behavior (95% CI 0.02-0.04). Logistical barrier-framed messages led to greater self-efficacy (ß=-.09, P=.02), resulting in higher intention to participate in clinical trials (95% CI -0.38 to -0.03) and improved sign-up behavior (95% CI -0.06 to -0.004). Logistical barrier-framed messages were also directly associated with an increased likelihood of signing up for a clinical trial (ß=-.08, P=.03). The model accounted for 21% of the variance in clinical trial sign-up behavior. Attitude did not significantly affect behavioral intention in this study (ß=.08, P=.14), and psychological and logistical barrier-framed messages did not significantly differ in attitudes toward clinical trial participation (ß=-.04, P=.09). CONCLUSIONS: These findings advance our understanding of how people process popular message characteristics in short-form videos and lend practical guidance for communicators. We encourage medical professionals to consider short-form video sites (eg, TikTok and Instagram Reels) as effective tools for discussing clinical trials and participation opportunities. Specifically, featuring doctors discussing efforts to reduce logistical barriers is recommended. Our measuring of actual behavior as an outcome is a rare and noteworthy contribution to this research.

Cleft lip and cleft palate in Esrp1 knockout mice is associated with alterations in epithelial-mesenchymal crosstalk.

Cleft lip is one of the most common human birth defects. However, there remain a limited number of mouse models of cleft lip that can be leveraged to characterize the genes and mechanisms that cause this disorder. Crosstalk between epithelial and mesenchymal cells underlies formation of the face and palate, but the basic molecular events mediating this crosstalk remain poorly understood. We previously demonstrated that mice lacking the epithelial-specific splicing factor Esrp1 have fully penetrant bilateral cleft lip and palate. In this study, we further investigated the mechanisms leading to cleft lip as well as cleft palate in both existing and new Esrp1 mutant mouse models. These studies included a detailed transcriptomic analysis of changes in ectoderm and mesenchyme in Esrp1-/- embryos during face formation. We identified altered expression of genes previously implicated in cleft lip and/or palate, including components of multiple signaling pathways. These findings provide the foundation for detailed investigations using Esrp1 mutant disease models to examine gene regulatory networks and pathways that are essential for normal face and palate development - the disruption of which leads to orofacial clefting in human patients.

Effects of Instagram Body Portrayals on Attention, State Body Dissatisfaction, and Appearance Management Behavioral Intention.

Research has suggested that Instagram is detrimental to one's body image and health, as a result of its image-driven nature and the social comparisons that are commonly made between users' bodies and the bodies they see portrayed. This study was designed to provide a better understanding of the effects of thin and fat body types portrayed in Instagram posts. This was done by examining how such body type portrayals influence attention to the posts, in addition to influencing outcomes such as body dissatisfaction and appearance management behavioral intentions. A total of 309 college students viewed 30 Instagram posts in an online experiment with a 2 (portrayed body type: thin vs. fat) X 15 (message repetition) within-subjects design. The findings indicate that thin-body portrayals increase audience self-reported attention to the posts and state body dissatisfaction, but female users who self-perceive themselves as fat report a similar level of attention to the posts regardless of portrayed body types. Additionally, Instagram use (defined as the number of photos users personally post) is found to moderate the effects of the body portrayals.

Effects of Communication Source and Racial Representation in Clinical Trial Recruitment Flyers.

The current study was designed to examine effective message strategies that can be employed in designing mediated communication messages to improve clinical trial research participation. In the study, a total of 300 participants completed an online experiment in which they responded to five different clinical trial recruitment advertisements whose information sources varied in their credentials and race. Overall, peer-featured ads in which previous clinical trial participants communicated their prior experience in clinical trial participation, compared to expert-featured ads in which medical doctors communicated information about clinical trials, led to higher message and topic relevance, higher message credibility, more favorable attitudes toward clinical trials, and higher intentions to participate in future clinical trials. Further, there was a statistically significant interaction among source credentials, racial match (between source and participant), and participant's race on message and topic relevance such that both White and Black participants rated ads from racially mismatched peers highly effective (greater message and topic relevance); however, for doctor featured ads, White participants reported higher message and topic relevance for racially matched (White doctor) ads, and Black participants reported higher message and topic relevance for racially mismatched (White doctor) ads. We discuss theoretical and practical implications.

Overcoming Black Americans' Psychological and Cognitive Barriers to Clinical Trial Participation: Effects of News Framing and Exemplars.

This study examines how news features (framing and the use of exemplars) can help overcome two common barriers (psychological and cognitive) impeding Black American participation in clinical trials. In an online experiment, Black participants (N = 390) viewed social media news posts varying in framing (focus on psychological vs. cognitive barriers) and use of an exemplar (present vs. absent and White vs. Black) and then responded to outcome measures including perceived message effectiveness, message attitudes, and intention to participate in clinical trials. The findings illustrate that including a racially matched (i.e. Black) exemplar improves attitudes toward clinical trial messages. Most notably, featuring a race-matched exemplar increases intention to participate in a trial when the messages discuss psychological barriers. These findings enhance our understanding of how messages can be better designed to increase Black American participation in clinical trials, thereby contributing to reducing health inequities and improving health outcomes.

An informed approach to the development of primary care pediatric firearm safety messages.

BACKGROUND: Firearm ownership is prevalent in the US and many children spend time in areas where firearms are not stored safely. The AAP recommends firearm safety counseling at pediatric well-visits. METHODS: We developed and tested six contextual messages to promote safe firearm storage based on: absence of harm, collective appeal to understanding child behavior, pediatrician's authority, evidence-based, fear appeal, and general safety considerations. One hundred four parents who keep firearms at home were recruited from Amazon Mechanical Turk Prime and viewed video messages and reported behavioral intentions and emotional reactions following each message. RESULTS: All six contextual messages were perceived as important and believable and increased parents' intentions to follow safety advice provided, but also elicited negative emotions. The authority message elicited more negative emotions and resulted in lower intentions to follow safe storage advice. CONCLUSIONS: Including firearm messages with other child safety advice merits further evaluation. Authority messages should be avoided.

Improving rural White men's attitudes toward clinical trial messaging and participation: effects of framing, exemplars and trust.

This study examined whether framing, exemplar presence and exemplar race in social media news posts influence rural White men's perceptions, attitudes and behavioral intentions toward clinical trial participation, and if so, how individual trust in doctors moderates the effects of these three factors. An experiment with a 2 within (framing: cognitive versus psychological barriers) × 2 within (exemplar: present versus absent) × 2 between (exemplar race: White versus Black) subjects mixed factorial design was conducted among rural White men (N = 208). Twelve social media news posts about clinical trial participation were created for the experiment. Results revealed that respondents had greater behavioral intentions to participate in clinical trials after seeing posts with exemplars present (versus absent). When news posts addressed cognitive barriers (e.g. lacking knowledge about the value of clinical trials), the presence of exemplars enhanced perceived self-efficacy to participate in clinical trials. Participants with lower trust in doctors reported more favorable attitudes to posts with exemplars, and the posts with Black exemplars were perceived as more effective (approaching statistical significance). When communicating about clinical trials to rural White men, health professionals should consider including exemplars and addressing cognitive barriers to participation.

Effects of Message Presentation Type on GM Food Risk Perception, Similarity Judgment, and Attitude.

Media play an important role in communicating scientific and health-related information, in turn, influencing audience risk perception. This study examined how genetically modified (GM) food news' presentation types - text-only, addition of photographs, or addition of infographics - can affect risk perception and attitude towards GM foods. Further, individuals' healthy eating involvement and perceived threat to GM foods were considered as individual difference variables influencing the level of perceived relevance to the GM food news. Results showed that news with infographics generally lowered risk perception and led individuals to perceive GM and non-GM foods more similarly in their safety on allergy, genetic changes, and organ toxicity.

The Impact of Retransmission and Modality on Communicating Health Research Findings via Social Media.

Social media is an increasingly popular tool for disseminating health research findings to members of the general public and may contribute to improving the effectiveness of science communication. This study was designed to investigate how retransmission (i.e., social media content shared by a familiar, credible organization) and modality (i.e., how the message is delivered) influence the effectiveness of communicating health research findings via social media. The findings from a 2 (source) X 3 (modality) X 2 (topic) mixed factorial design experiment (N= 517) indicated that source had a significant effect, such that posts that were retransmitted by a credible organization resulted in greater perceived source credibility, greater perceived message effectiveness, and greater likelihood of an individual to engage with the post on Facebook. Modality significantly increased perceived source credibility and perceived message effectiveness when posts were retransmitted by a credible source, indicating that modality made a difference when messages were elaborated as a function of the retransmission. Also, the topic of the post had a significant impact on the study's dependent variables of interest. Overall, the findings illustrate the potential of retransmission and modality as message features that can improve communication of health research findings on social media. Theoretical and practical implications are discussed.

The Third Rail of Pediatric Communication: Discussing Firearm Risk and Safety in Well-Child Exams.

This research endeavors to understand how pediatricians and parents discuss - or do not discuss - firearm risks for children during well-child visits. Through individual semi-structured interviews with 16 pediatric providers and 20 parents, the research explores discursive barriers to open conversation, perspectives on anticipatory guidance, and new ideas for culturally competent messaging. The research focuses particularly on how parents' and providers' perspectives on firearm risk communication are tied to cultural norms and expectations. One salient theme that emerged is that the American Academy of Pediatrics recommendation that pediatricians ask parents about ownership status is deemed undesirable by pediatricians and parents because of the delicate intercultural setting. Born out of pediatric and parent experiences, and mindful of culturally salient barriers, this study offers alternative strategies for discussing firearm risk in well-child exams.

Individual differences in trait motivational reactivity influence children and adolescents' responses to pictures of taboo products.

This study examined how children and adolescents respond to pictures of products whose use, for them, is socially or legally restricted (e.g., beer, liquor, cigarettes). It was theorized and found that these pictures, referred to as taboo, elicit an automatic motivational activation whose direction and intensity are influenced by age and individual differences in defensive system activation. Results show that 11-12-year-old children demonstrate primarily aversive responses to taboo products, 13-15-year-old children have less aversive responses, and 16-17-year-old children have mixed appetitive and aversive motivational responses. Further, those with high defensive system activation show larger aversive and smaller appetitive responses across the age groups. These results suggest that placing pictures of these products in prevention messages may work for the prevention goal of reduced experimentation and risk in younger children but against the prevention goal for the older children who may be more likely to be exposed to opportunities for experimentation and use.

Complete genome sequencing of three methicillin-resistant Staphylococcus aureus isolated from the blood of patients with persistent bacteremia.

We report the complete genome sequences of three molecular types of methicillin-resistant Staphylococcus aureus (MRSA) clinical strains isolated from the blood of three patients diagnosed with persistent MRSA bacteremia: KNIH_5618 (ST5-t5076-SCCmecII), KNIH_5844 (ST72-t664-SCCmecIV), and KNIH_6268 (ST89-t375-SCCmecII). These genome sequences contribute to an enhanced understanding of the underlying causes of persistent MRSA infection.

COVID-19 vaccination communication: Effects of vaccine conspiracy beliefs and message framing among black and white participants.

BACKGROUND: The importance of vaccination in combating the COVID-19 pandemic is widely acknowledged. The aim of this study was (1) to understand how one's vaccine conspiracy beliefs would influence their public health news processing, (2) to examine how specific public health news features (i.e., news frame) would influence message processing, and (3) to examine if there were any differences between Black and White participants in their message processing. METHODS: A nationwide online experiment (N = 821) with a 3 (vaccine conspiracy beliefs: high vs. moderate vs. low) × 2 (participants' race: Black vs. White) × 2 (news frames: gain vs. loss) mixed-factorial design was conducted in the United States. RESULTS: Participants' level of vaccine conspiracy beliefs was predictive of their responses to outcome measures. Additionally, Black participants reported higher perceived message effectiveness, more favorable attitudes toward the message, and higher vaccination intentions than White participants. Furthermore, health news that emphasized vaccination benefits produced more favorable attitudes than those emphasizing losses associated with non-vaccination, especially for White participants. Lastly, participants reported more favorable attitudes toward gain-framed health news regardless of their vaccine conspiracy beliefs. CONCLUSION: It is crucial for health officials to work to find effective media message strategies to combat COVID-19 vaccine conspiracy theories and misinformation. Furthermore, this study supports the significance of health organizations' ongoing efforts to tailor public health messaging to specific racial groups, as evidenced by considerable variations in perceptions among Black and White Americans.

Effects of smoking cues and argument strength of antismoking advertisements on former smokers' self-efficacy, attitude, and intention to refrain from smoking.

INTRODUCTION: This study examines the impact of smoking cues employed in antismoking advertisements on former smokers. Previous findings indicate that visual smoking cues in antismoking advertisements with weak antismoking arguments can elicit smoking urges in smokers and undermine message effectiveness. This study extends these observations to former smokers asking whether smoking cues in antismoking advertisements influence former smokers' self-efficacy, attitudes, and intention to refrain from smoking, along with smoking urges and perceived message effectiveness. METHODS: The study was a mixed 2 (smoking cues; present vs. absent) × 2 (argument strength [AS]; high vs. low) design where smoking cue was a between-subject factor and AS was a within-subject factor. Potential participants recruited via online ads were screened in a phone interview for their eligibility. A total of 105 former smokers (aged 21-65) participated in the study, which was conducted in a laboratory setting. Repeated measure ANOVA and MANOVA were used for the analyses. RESULTS: The results showed that the presence of smoking cues in antismoking ads undermines former smokers' behavioral self-efficacy, attitude, and intention about smoking abstinence, which increased as AS for the ads increased. Former smokers' reports of smoking urge were not affected by smoking cues or AS. However, consistent with previous findings for smokers, the presence of cues weakened perceived message effectiveness of antismoking ads rated by former smokers. CONCLUSIONS: The effect of smoking cues on former smokers' self-efficacy, attitude, and intention to refrain from smoking is problematic. Inclusion of smoking cues in antismoking ads should be undertaken only when accompanied by strong arguments.

Whole-Genome Sequencing of Mycobacterium tuberculosis Isolated from Three Hospitals in South Korea.

Mycobacterium tuberculosis clinical isolates CN118, CN272, CB131, IP004, and IP016 were isolated from three hospitals in South Korea. Here, we report the whole-genome sequences of the five M. tuberculosis clinical isolates to aid the understanding of their genetic diversity.

Whole-Genome Sequencing of Clinical Isolates of Mycobacterium tuberculosis Isolated before and after Treatment.

Mycobacterium tuberculosis clinical isolates CN177_0W, CN177_2W, CB060_0W, and CB060_2W were isolated from two tuberculosis patients in South Korea. Here, we report the whole-genome sequences of clinical isolates of M. tuberculosis isolated before and after tuberculosis treatment.

Visualizing science: The impact of infographics on free recall, elaboration, and attitude change for genetically modified foods news.

Within the theoretical frameworks of the dual coding theory, this study examined how the implementation of infographics would influence audiences' cognitive responses to science news reporting topics of genetically modified food and bioengineering. A total of 280 participants were randomly assigned to view news articles that report genetically modified food information presented via infographics or text. Findings showed that the participants recalled more information, elaborated more message-relevant thoughts, and had more favorable attitude changes toward the genetically modified foods when science news content is presented in infographics compared with text. Theoretical and practical implications are discussed herein.