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Patients undergoing hemodialysis are particularly vulnerable to severe outcomes of SARS-CoV-2 infection, with mortality rates higher than that of the general population. Vaccination reduces the risk of adverse outcomes, with booster doses being particularly beneficial. However, limited data are available on the effectiveness of subsequent vaccinations or their effect on increasing antibody levels. This single-center study aimed to investigate changes in SARS-CoV-2 IgG antibody titers following the fourth vaccination among 28 patients undergoing hemodialysis. Blood tests were conducted at various intervals post-vaccination, with a focus on identifying factors associated with antibody levels. The IgG antibody levels rapidly increased by Day 7 post-vaccination, with a median time to peak of 11 days. Antibody titers tended to be higher in male patients than in female patients. This study sheds light on the immune response to the fourth vaccination in patients undergoing hemodialysis. As this study included a small sample size, with a short observation period, further research is warranted to comprehensively understand the effectiveness of vaccination and the benefits of additional doses of vaccine.
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Anticuerpos Antivirales , Vacuna BNT162 , Vacunas contra la COVID-19 , COVID-19 , Inmunoglobulina G , Diálisis Renal , SARS-CoV-2 , Glicoproteína de la Espiga del Coronavirus , Humanos , Masculino , Femenino , Vacuna BNT162/inmunología , Vacuna BNT162/administración & dosificación , Anticuerpos Antivirales/sangre , Anticuerpos Antivirales/inmunología , COVID-19/inmunología , COVID-19/prevención & control , SARS-CoV-2/inmunología , Anciano , Glicoproteína de la Espiga del Coronavirus/inmunología , Persona de Mediana Edad , Inmunoglobulina G/sangre , Inmunoglobulina G/inmunología , Japón/epidemiología , Vacunas contra la COVID-19/inmunología , Vacunas contra la COVID-19/administración & dosificación , Vacunación , Anciano de 80 o más Años , Inmunización Secundaria , Adulto , Pueblos del Este de AsiaRESUMEN
In recent years, Japan has faced a significant demographic crisis, which was further exacerbated by the coronavirus disease 2019 (COVID-19) pandemic. By 2022, the country experienced a 1.5% decrease in population, which is in contrast to other G7 nations, and had the highest rate of excess mortality among Organization for Economic Co-operation and Development (OECD) countries. This crisis is mainly attributed to aging population, with Japan's aging rate reaching 29.9%, the highest among its peer countries. The Japanese government, led by Prime Minister Fumio Kishida, has proposed policies aimed at addressing these challenges, focusing on increasing fertility rates. Despite these efforts, an evidence-based policymaking (EBPM) analysis reveals that the anticipated impact on fertility rates is marginal, with financial interventions estimated to yield only a slight population increase by 2060. Furthermore, the analysis highlighted the need for a more comprehensive approach, indicating that addressing societal issues such as gender norms and workplace culture might be crucial for a sustainable solution to Japan's demographic challenges. This emphasizes the need for Japan to consider broader societal changes alongside fiscal policies to effectively combat its demographic decline.
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BACKGROUND: Health information seeking via the internet among patients with cancer in disaster-affected areas is underresearched. OBJECTIVE: This study aims not only to assess the extent and means of web-based health information seeking among patients with cancer living in the disaster-affected area of the 2011 Fukushima triple disaster but also to compare these patterns with those without cancer, identifying distinct and shared factors influencing their web-based health information behaviors. METHODS: We surveyed 404 patients (263 with and 141 without cancer) from the surgery department outpatient office at Minamisoma Municipal General Hospital, from October 2016 to January 2017. The survey included self-administered questions on internet and digital device use. Descriptive analyses were performed to examine the use patterns of digital devices and the internet and their impact on health information seeking across different age groups of patients with and without cancer. Multivariable logistic regression was used to examine factors associated with web-based health information seeking, stratifying by cancer diagnosis. RESULTS: The proportion of participants who sought health information on the internet was comparable between patients with cancer and patients without cancer (19% vs 17.4%; P=.71). Digital device use varied significantly with age, with peak smartphone use occurring among the youngest cohorts for both groups. Multivariable logistic regression revealed that patients with cancer using smartphones or tablets daily were significantly more likely to gather web-based health information (odds ratio [OR] for smartphones 3.73, 95% CI 1.58-8.80; OR for tablets 5.08, 95% CI 1.27-20.35). Trust in institutional websites also significantly influenced web-based health information gathering among patients with cancer (OR 2.87, 95% CI 1.13-7.25). Conversely, among patients without cancer, unemployment was associated with a lower likelihood of seeking web-based health information (OR 0.26, 95% CI 0.08-0.85), whereas trust in both institutional and personal websites significantly increased this likelihood (OR for institutional websites 6.76, 95% CI 2.19-20.88; OR for personal websites 6.97, 95% CI 1.49-32.58). CONCLUSIONS: This study reveals that a small proportion of both patients with cancer and patients without cancer engage in health information seeking via the internet, influenced by age, digital device use, and trust in institutional websites. Given the growing prevalence of digital literacy, strategies to enhance accessible and reliable web-based health information should be developed, particularly for patients with cancer in postdisaster settings. Future efforts should focus on tailored health communication strategies that address the unique needs of these populations.
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Introduction: Vaccination has been implemented as a useful measure to combat the COVID-19 pandemic. However, there is a tendency for individuals to avoid vaccination due to the possibility of adverse events, making it important to investigate the relationship between COVID-19 vaccines and their adverse events. This study explored longitudinal adverse event patterns and factors that influence adverse events following the second to fourth doses of the COVID-19 vaccine through a latent class analysis. Methods: Participants were recruited from the Fukushima Prefecture and included individuals who had completed four doses of the COVID-19 mRNA vaccine. This study utilized data from questionnaire surveys and blood collection conducted between September 2021 and November 2022. In the questionnaire, factors such as sex, age, medical history, medication, type of vaccine administered, and adverse events following vaccination were recorded. Additionally, in the blood data, serological tests [IgG(S)] and cellular immune responses (T-spot) were measured. Descriptive statistics, latent class analysis, multivariable logistic regression, and multiple regression analyses were performed to identify the longitudinal adverse event patterns and influencing factors. By analyzing adverse events over time, we identified two distinct groups: those less prone to experiencing adverse events (Group 1) and those more susceptible (Group 2) to latent class analysis. Results: A total of 1,175 participants were included after excluding those without any adverse events. The median age of the participants in Group 1 was 70 years, and in Group 2 it was 51 years. The proportion of female participants was 298 in Group 1 and 353 in Group 2. Patients in Group 2 were significantly younger (p < 0.001) and more likely to be female (p < 0.001) than those in Group 1. Furthermore, the median IgG(S) value after the fourth vaccination was 3,233 AU/mL in Group 1 and 4,059.39 AU/mL in Group 2. The median T-spot value was 15.4 in Group 1 and 28.5 in Group 2. Group 2 showed significantly higher IgG(S) and T-spot values after the fourth vaccination (p < 0.001). Discussion: Our findings suggest that factors other than age, particularly sex and a history of allergies, significantly influence the likelihood of experiencing adverse events. Groups categorized by latent class analysis for longitudinal adverse events are expected to be valuable for optimizing vaccination strategies and formulating public health measures.
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Vacunas contra la COVID-19 , COVID-19 , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , COVID-19/prevención & control , Vacunas contra la COVID-19/efectos adversos , Vacunas contra la COVID-19/administración & dosificación , Japón , Análisis de Clases Latentes , Estudios Longitudinales , Encuestas y Cuestionarios , Vacunación/efectos adversosRESUMEN
In the medical field, the importance of online reviews is escalating. However, the complexity of responding to these reviews is profound, as such anonymous critiques may encompass not only emotionally distressing content but also potentially malicious criticisms directed at healthcare professionals. While recognizing the vital role of patient feedback, there exists a necessity for a collective approach to managing online commentary. This effort seeks to strike a balance between patient satisfaction and the safeguarding of healthcare practitioners and administrative staff. We believe the global medical community must establish guidelines to effectively handle such scenarios, thereby contributing to the sustainability of patient-centered services.
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Retroalimentación , Satisfacción del Paciente , Humanos , Internet , Sociedades Médicas , Atención Dirigida al PacienteAsunto(s)
Anticuerpos Monoclonales Humanizados , Neoplasias de la Mama , Femenino , Humanos , Anticuerpos Monoclonales Humanizados/uso terapéutico , Antineoplásicos Inmunológicos/uso terapéutico , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/patología , Camptotecina/análogos & derivados , Camptotecina/uso terapéutico , Camptotecina/administración & dosificación , Inmunoconjugados , Metástasis de la NeoplasiaRESUMEN
Self-exercise during hemodialysis reportedly prevents functional decline. This study aimed to assess the effects of exercise on physical function during hemodialysis. From September 2014 to March 2018, 35 elderly dialysis patients participated in an exercise program 3 times a week for 24 weeks during hemodialysis under staff supervision. The Short Physical Performance Battery and muscle strength test were used to measure physical function, and the Short Form Version 2 and Self-Rating Questionnaire for Depression were used to measure psychological function. For Short Physical Performance Battery, walking speed and standing time improved significantly. Other significant improvements were observed in both knee extension muscle strength and right side of grip strength. There was also an improving trend in both Short Form Version 2 and Self-Rating Questionnaire for Depression after the intervention compared with the baseline. A long-term supervised self-exercise program during dialysis led to maintenance and improvement of physical and psychological functioning in elderly dialysis patients.
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Diálisis Renal , Humanos , Diálisis Renal/psicología , Masculino , Femenino , Proyectos Piloto , Anciano , Japón , Terapia por Ejercicio/métodos , Fuerza Muscular/fisiología , Depresión/psicología , Anciano de 80 o más Años , Fallo Renal Crónico/terapia , Fallo Renal Crónico/psicología , Rendimiento Físico Funcional , Ejercicio Físico/psicología , Ejercicio Físico/fisiología , Pueblos del Este de AsiaRESUMEN
Both public and academic scrutiny of the financial relationships between the medical device industry and the healthcare society occur less frequently than those involving the pharmaceutical industry, and Japan is no exception to these shortcomings. This paper examines the ethical and legal challenges inherent in Japan's medical device industry through the lens of bribery scandals, placing these issues within the broader context of global healthcare corruption. It aims to derive lessons and suggest universal strategies for ethical and legal enhancements. The discussion includes two notable cases: one involving inappropriate transactions between a cancer center and a biliary stent manufacturer, and another concerning a corrupt donation scheme between a medical device company and a university's anesthesiology department, which was found guilty. In our analysis, we also acknowledge the industry's efforts toward compliance and reform to maintain a balanced perspective. The analysis not only highlights the unique culture and structure of the Japanese medical device industry, such as the exploitation of flexible pricing and opaque financial practices but also contrasts these issues with the tightly regulated pharmaceutical industry. This approach reveals both sector-specific challenges and common corruption drivers, enhancing our understanding of why such scandals occur and persist. We propose ethical and compliance-focused business measures such as centralizing donation decisions, limiting the financial independence of marketing divisions, and increasing transparency, alongside adopting mandatory disclosure practices based on successful models from the United States and Europe. By emphasizing integrity and presenting diverse perspectives, this study aims to elevate ethical and legal standards in the medical device industry and improve patient health outcomes worldwide.
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Following the Great East Japan Earthquake (GEJE) and the Fukushima Daiichi nuclear power plant accident in 2011, mandatory evacuation orders were issued to residents living near the nuclear power plant in Fukushima prefecture, including some patients receiving home oxygen therapy. Although the vulnerability of patients with home oxygen therapy (one of the population groups most vulnerable to disasters) has been noted, there is little information on the health effects of evacuation in the event of a radiation disaster. A 90-year-old man diagnosed with chronic obstructive pulmonary disease since the age of 70, and lived in a town located approximately 20 km south of the nuclear power plant, died 8 months after the disaster due to worsening health conditions. This case reveals the potential for both physical and psychological burdens experienced by vulnerable groups like patients undergoing home oxygen therapy during evacuations in times of disaster. Although it is only a case report and the information is limited, severe respiratory distress requiring home oxygen therapy may present a significant risk factor for disaster-related deaths, especially in cases where evacuations are prolonged, such as in nuclear disasters. Due to the challenge of obtaining prompt public support immediately after a disaster, home oxygen therapy patients may need to prioritize self-help and mutual assistance in their disaster preparedness efforts.
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Accidente Nuclear de Fukushima , Servicios de Atención de Salud a Domicilio , Terapia por Inhalación de Oxígeno , Humanos , Masculino , Anciano de 80 o más Años , Japón , Enfermedad Pulmonar Obstructiva Crónica/terapia , Resultado FatalRESUMEN
Regulatory authorities must balance ensuring evidence of efficacy and safety of new drugs. Various regulatory pathways, such as the accelerated approval program in the United States (US), allow authorities to quickly approve drugs for severely ill patients by granting market authorization based on surrogate end points and pending confirmatory trials. In this cross-sectional study, we considered 23 indications of cancer drugs that received accelerated approval by the US Food and Drug Administration (FDA) but were subsequently withdrawn as of April 2023. Our investigation extended to assessing the regulatory status of these accelerated approvals in the European Union (EU) and Japan, examining relevant regulatory documents and identifying factors contributing to the withdrawal in the United States. Comparing regions, we found that for 52% (12/23) and 30% (7/23) of withdrawn accelerated approvals in the United States, sponsors had also sought marketing authorization from the European Medicines Agency (EMA) and Japan's Pharmaceuticals and Medical Devices Agency (PMDA), respectively. As of the April 30, 2023 study cutoff date, 83% (10/12) of drug-indication pairs remained approved by the EMA, while the PMDA retained 100% (7/7). For these indications, the time from FDA withdrawal until the study cutoff date ranged from 0.23 years to 11.45 years for EMA approvals (median: 1.28 years) and 1.10 years to 11.45 years for PMDA approvals (median: 3.22 years). These findings highlight substantial regulatory discrepancies concerning cancer drugs with unconfirmed benefits. Addressing these discrepancies may involve requiring pharmaceutical companies to confirm clinical benefits using more robust end points and fostering international harmonization in regulators' assessment.
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Antineoplásicos , Aprobación de Drogas , United States Food and Drug Administration , Aprobación de Drogas/legislación & jurisprudencia , Japón , Estados Unidos , Humanos , Antineoplásicos/uso terapéutico , Estudios Transversales , Europa (Continente) , Unión Europea , Neoplasias/tratamiento farmacológicoRESUMEN
It is crucial to anticipate nuclear emergency scenarios and implement effective measures. Japan's climate and topography make it vulnerable to natural disasters; thus, it is necessary to address compounding and cascading disaster scenarios involving the simultaneous occurrence of natural and nuclear disasters. On 1 January 2024, an earthquake hit the Noto region of Ishikawa Prefecture, resulting in damage to the area around the Shika Nuclear Power Plant, located 90 km from the epicenter. This earthquake revealed that, in the event of a complex disaster, it is possible that residents living within 30 km of the Shika Nuclear Power Plant will be completely unprepared for a nuclear disaster. In the event of a complex disaster, it is crucial to implement appropriate countermeasures while balancing responses to both nuclear and natural disasters and optimizing radiation disaster prevention measures.
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Planificación en Desastres , Japón , Humanos , Liberación de Radiactividad Peligrosa/prevención & control , Terremotos , Desastres Naturales , Plantas de Energía Nuclear , Protección RadiológicaRESUMEN
INTRODUCTION: ChatGPT, a large-scale language model, is a notable example of AI's potential in health care. However, its effectiveness in clinical settings, especially when compared to human physicians, is not fully understood. This study evaluates ChatGPT's capabilities and limitations in answering questions for Japanese internal medicine specialists, aiming to clarify its accuracy and tendencies in both correct and incorrect responses. METHODS: We utilized ChatGPT's answers on four sets of self-training questions for internal medicine specialists in Japan from 2020 to 2023. We ran three trials for each set to evaluate its overall accuracy and performance on nonimage questions. Subsequently, we categorized the questions into two groups: those ChatGPT consistently answered correctly (Confirmed Correct Answer, CCA) and those it consistently answered incorrectly (Confirmed Incorrect Answer, CIA). For these groups, we calculated the average accuracy rates and 95% confidence intervals based on the actual performance of internal medicine physicians on each question and analyzed the statistical significance between the two groups. This process was then similarly applied to the subset of nonimage CCA and CIA questions. RESULTS: ChatGPT's overall accuracy rate was 59.05%, increasing to 65.76% for nonimage questions. 24.87% of the questions had answers that varied between correct and incorrect in the three trials. Despite surpassing the passing threshold for nonimage questions, ChatGPT's accuracy was lower than that of human specialists. There was a significant variance in accuracy between CCA and CIA groups, with ChatGPT mirroring human physician patterns in responding to different question types. CONCLUSION: This study underscores ChatGPT's potential utility and limitations in internal medicine. While effective in some aspects, its dependence on question type and context suggests that it should supplement, not replace, professional medical judgment. Further research is needed to integrate Artificial Intelligence tools like ChatGPT more effectively into specialized medical practices.
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Medicina Interna , Medicina Interna/educación , Humanos , Japón , Competencia Clínica/normas , Pueblos del Este de AsiaRESUMEN
Introduction While prior research showed gender gaps in industry payments for medical professionals in the United States, there are limited data in Japan. So, this study seeks to investigate the potential gender gap in the receipt of pharmaceutical companies (PFCs) across all medical fields in Japan. Based on the results of previous studies, we developed a hypothesis that male doctors get more PFC than female doctors. Materials and methods Data from 92 pharmaceutical companies in Japan, covering 2016 to 2019, were analyzed. The analysis was conducted on professors and associate professors at all national and public medical universities in Japan, with gender as a factor variable and payments as an outcome variable, and variables that may have influenced the factor or outcome variables in previous studies, such as specialization, university type, region, rank and years since graduation, as control variables. Payments were converted to US dollars using the December 31, 2021, rate of 115 yen to the dollar for comparison purposes. Results Out of 1,825 subjects, 1,755 were males and 70 females. Males consistently received higher median payments from pharmaceutical companies (PFCs) than females across categories. In particular, among physicians specializing in internal medicine, the median PFC for men was $25 compared to $8 for women. For physicians affiliated with former imperial universities (the seven former imperial universities founded before World War II), the median PFC for men was $32 compared to $5 for women. Multivariate analysis confirmed significantly higher total benefits for males from 2016 to 2019, with the gender gap widening during this period (incidence rate ratio (IRR) for 2016: 0.51, IRR for 2019: 0.44). Conclusions Japanese male professors and associate professors received significantly higher PFCs than their female counterparts, and this gender gap expanded from 2016 to 2019, highlighting persistent gender inequality in the medical field in Japan, similar to trends observed in the United States.
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There is limited information on whether the COVID-19 pandemic was associated with decreased breast cancer screening uptake and if COVID-19 vaccination was associated with an increase in screening uptake. Our study explored the uptake of breast cancer screening in Japan after the COVID-19 pandemic and assessed its association with the COVID-19 vaccination. We analyzed data from the Japan COVID-19 and Society Internet Survey (JACSIS), a web-based prospective cohort survey, and we included 6110 women without cancer history who were aged 40 to 74 years that participated in the 2012 and 2022 surveys. We examined the regular breast cancer screening uptake before and after the pandemic and employed a multivariable Poisson regression model to seek any association between COVID-19 vaccination and screening uptake. Of 6110, 38.2% regularly participated in screening before the pandemic and 46.9% did so after the pandemic. Individuals unvaccinated due to health reasons (incidence rate ratio (IRR) = 0.47, 95% CI: 0.29-0.77, p = 0.003) and for other reasons (IRR = 0.73, 95% CI: 0.62-0.86, p < 0.001) were less likely to undergo screening compared to fully vaccinated individuals. There was no long-term decrease in breast cancer screening uptake after the pandemic in Japan. Vaccination was linked to increased uptake, but there was no dose relationship.