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1.
Forensic Sci Int ; 364: 112242, 2024 Oct 04.
Artigo em Inglês | MEDLINE | ID: mdl-39369495

RESUMO

We endeavored to identify individuals from mixed-blood spots by conducting a singlecell genomic analysis on four cells. Based on the electropherograms of 15 STRs (short tandem repeats) and amelogenin, we selected samples presumed to be nonmixed. These samples were then segregated into two groups and combined within eachgroup. We forecasted the DNA profiles of each donor using these predictions. The outcomes aligned with the original DNA profiles of each donor.

2.
J Neurol Sci ; 466: 123212, 2024 Sep 02.
Artigo em Inglês | MEDLINE | ID: mdl-39243604

RESUMO

INTRODUCTION: Corticobasal degeneration (CBD) is a clinically heterogeneous neurodegenerative disorder, for which pathological investigations are essential for a definitive diagnosis. This study explored the clinical characteristics of Japanese patients with pathologically confirmed CBD. METHODS: We reviewed the data of Japanese patients with pathologically confirmed CBD who were consecutively autopsied at our institute. Clinical data were obtained from medical records and clinicopathological conferences. RESULTS: Of the 34 patients initially reviewed, three were excluded because of a lack of detailed clinical data. Of the remaining 31 patients, 16 were men and 15 were women. The mean ages at onset and death were 63.3 ± 6.7 (51-79) years and 69.1 ± 6.9 (54-86), respectively. The median disease duration was 6.0 (2.5-12) years. The clinical phenotypes were as follows: progressive supranuclear palsy syndrome (PSPS; n = 20, 64.5 %), probable or possible corticobasal syndrome (n = 6, 19.4 %), frontal behavioral-spatial syndrome (n = 4, 12.9 %), nonfluent/agrammatic variant of primary progressive aphasia (n = 1, 3.2 %). Furthermore, 28 (90.3 %) patients exhibited dysphagia with a median latency of 3.5 (1.0-10.0) years, and 22 (71.0 %) patients who underwent tube feeding survived longer than those who did not (P = 0.013). CONCLUSIONS: Compared with Western populations, a high prevalence of PSPS may be a clinical characteristic of Japanese patients with CBD. Additionally, dysphagia occurs in many patients with early latency and may shorten survival. Tube feeding contributes to the prolonged survival of patients with CBD.

3.
Cerebrovasc Dis ; : 1-15, 2024 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-39348801

RESUMO

INTRODUCTION: Cerebral small-vessel disease (CSVD) is a common cause of cognitive decline and stroke. Several studies have shown that smoking is a risk factor for CSVD progression. However, the extent to which smoking exacerbates CSVD lesions remains unclear. In this study, we aimed to clarify the association between total smoking exposure and the severity of CSVD in healthy participants. METHODS: We analyzed the data of participants aged ≥ 50 years who underwent brain screening. The participants' age, sex, body mass index, alcohol consumption history, and medical history (hypertension, diabetes mellitus, and dyslipidemia) were investigated. Smoking status was assessed in pack-years, and smokers were classified as current or past smokers. CSVD findings on magnetic resonance imaging were used to evaluate the severity of periventricular hyperintensity (PVH), deep subcortical white matter hyperintensity (DSWMH), and enlarged perivascular spaces (EPVSs). The EPVSs were measured in the basal ganglia and centrum semiovale regions. Multivariable ordinal logistic regression analyses were performed to evaluate the effect of smoking, adjusted for the participants' baseline characteristics. RESULTS: A total of 2,137 participants were included in this study. The mean age of the participants was 58.7 years. The mean pack-years were 20.5 for past smokers and 26.8 for current smokers. Among current smokers, increased pack-years were significantly associated with a high EPVS burden in the basal ganglia (odds ratio: 1.14, 95% confidence interval: 1.00-1.28), whereas no such significant association was found for past smokers. No statistically significant association was found between pack-years and the risks of PVH, DSWMH, or EPVS in the centrum semiovale. CONCLUSION: Current smoking was associated with a dose-dependent risk of EPVS in the basal ganglia in healthy participants.

4.
World J Mens Health ; 2024 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-39344114

RESUMO

PURPOSE: Twenty five years have passed since the first national survey on erectile dysfunction (ED) in Japan. The Japanese Society for Sexual Medicine conducted a nationwide survey on the actual status of sexual function targeting men over 20 years old in Japan using validated questionnaires commonly used in clinical practice. MATERIALS AND METHODS: Japanese men aged 20 to 79 years participated in our online epidemiological study on sexual dysfunction. Erectile status was assessed by direct questioning and specific questionnaires. Risk factors and frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were assessed. The prevalence of these risk factors was compared between men with and without ED. Prevalence and frequencies were calculated for each 5-year age group. Main outcomes were the prevalence and number of patients with ED and simultaneous evaluation of age-related variations. RESULTS: Direct questioning of the men revealed that 13.0% felt troubled by ED. Although 81.0% of them had at least some ED symptoms based on a Sexual Health Inventory For Men score of ≤21, the prevalence of men with ED by Erection Hardness Score (EHS), the most appropriate questionnaire for Japanese with low sexual activity, was 30.9%, indicating that 14,012,596 men have ED. Most risk factors were related with ED, whereas frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were affected by aging. However, the low frequency of these factors in the young generation was surprising. CONCLUSIONS: The EHS-based assessment revealed a prevalence of ED of 30.9%, which affected approximately 14 million men, and that the sexual desire, erection stiffness, orgasms, and satisfaction were lower than expected in young Japanese men, especially those aged 20 to 24 years, although those factors tended to worsen with aging. We believe that these findings actually reveal the current sexual status of men in Japan.

5.
Health Promot Int ; 39(4)2024 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-39180352

RESUMO

The European Health Literacy Survey Questionnaire (HLS-EU-Q47) is available in multiple languages, and shortened versions have also been developed. This study aimed to examine the reliability and validity of the short version of the questionnaire (HLS-Q12) developed for community-dwelling older adults in Japan. The HLS-Q12 was developed using 12 of the 47 items of the Japanese version of the HLS-EU-Q47. In this study, the survey was conducted by distributing self-administered questionnaires to community-dwelling individuals aged 65 years and older who consented to participate; their responses were collected by mail. The correlation between the HLS-Q12 and the HLS-EU-Q47 was tested to assess criterion validity. To test construct validity, nine novel hypotheses were proposed. We also conducted a confirmatory factor analysis of the HLS-Q12. Based on a resurvey after 5-7 days, test-retest reliability was examined using interclass correlation coefficients (ICCs) and Bland-Altman analysis. In total, 118 individuals provided valid responses to the questionnaire. The Spearman rank correlation coefficient between the HLS-Q12 and the HLS-EU-Q47 was r = 0.98 (p < 0.001), and eight of the nine hypotheses were supported. The ICC was 0.96 (p < 0.001), and the 95% limit of agreement was -0.26 ±â€…5.9, suggesting no systematic error. Thus, the Japanese version of the HLS-Q12 was found to be reliable with high criterion validity and reproducibility. Hence, the HLS-Q12 is a useful scale for measuring health literacy among older adults in Japan.


Assuntos
Letramento em Saúde , Vida Independente , Humanos , Idoso , Japão , Feminino , Masculino , Inquéritos e Questionários/normas , Reprodutibilidade dos Testes , Idoso de 80 Anos ou mais , Psicometria
6.
Int J Mol Sci ; 25(16)2024 Aug 16.
Artigo em Inglês | MEDLINE | ID: mdl-39201616

RESUMO

Amyloid ß peptide (Aß) aggregation and deposition are considered the main causes of Alzheimer's disease. In a previous study, we demonstrated that anionic Zn-phthalocyanine (ZnPc) can interact with the Aß peptide and inhibit the fibril-formation process. However, due to the inability of anionic ZnPc to cross the intact blood-brain barrier, we decided to explore the interaction of cationic methylated Zn-phthalocyanine (cZnPc) with the peptide. Using a ThT fluorescence assay, we observed that cZnPc dose-dependently and time-dependently inhibited Aß1-42 fibril levels under in vitro fibril-formation conditions. Electron microscopy revealed that it caused Aß1-42 peptides to form small aggregates. Western blotting and dot immunoblot oligomer experiments demonstrated that cZnPc increased rather than decreased the levels of oligomers from the very early stages of incubation. A binding assay confirmed that cZnPc could bind with the peptide. Docking simulations indicated that the oligomer species of Aß1-42 had a higher ability to interact with cZnPc. ANS fluorescence assay results indicated that cZnPc did not affect the hydrophobicity of the peptide. However, cZnPc significantly increased intrinsic tyrosine fluorescence of the peptide after 8 h of incubation in fibril-formation conditions. Importantly, cell culture experiments demonstrated that cZnPc did not exhibit any toxicity up to a concentration of 10 µM. Instead, it protected a neuronal cell line from Aß1-42-induced toxicity. Thus, our results suggest that cZnPc can affect the aggregation process of Aß1-42, rendering it non-toxic, which could be crucial for the therapy of Alzheimer's disease.


Assuntos
Doença de Alzheimer , Peptídeos beta-Amiloides , Indóis , Isoindóis , Compostos Organometálicos , Fragmentos de Peptídeos , Compostos de Zinco , Peptídeos beta-Amiloides/química , Peptídeos beta-Amiloides/metabolismo , Peptídeos beta-Amiloides/toxicidade , Doença de Alzheimer/metabolismo , Doença de Alzheimer/tratamento farmacológico , Doença de Alzheimer/patologia , Indóis/química , Indóis/farmacologia , Humanos , Compostos de Zinco/química , Compostos de Zinco/farmacologia , Compostos Organometálicos/farmacologia , Compostos Organometálicos/química , Fragmentos de Peptídeos/química , Fragmentos de Peptídeos/toxicidade , Fragmentos de Peptídeos/farmacologia , Agregados Proteicos/efeitos dos fármacos , Animais , Simulação de Acoplamento Molecular , Neurônios/efeitos dos fármacos , Neurônios/metabolismo
7.
Chem Commun (Camb) ; 60(54): 6925-6928, 2024 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-38884166

RESUMO

As a novel conceptual synthesis of a metal-organic framework (MOF)-based proton conductor, UiO-66 based on a pyridinedicarboxylic acid phosphate (PyDC-PA) ion pair linker has been developed, in which the phosphoric acid is fixed to the N donor moiety of pyridine via an ionic bond.

8.
Clin Neuropathol ; 43(3): 74-82, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38818729

RESUMO

AIMS: Corticobasal degeneration (CBD) is a rare neurodegenerative disorder. The status of the inferior olivary nucleus (ION) in CBD has been inadequately investigated. In this study, we conducted a pathological investigation of the ION in CBD. MATERIALS AND METHODS: We reviewed the data of Japanese patients with pathologically confirmed CBD who underwent consecutive autopsies between 1985 and 2020 at our institute. We retrospectively examined clinical data from medical records and clinicopathological conferences and semi-quantitatively assessed the ION, central tegmental tract, superior cerebellar peduncle, and dentate nucleus. RESULTS: Of the 32 patients included, 14 (43.8%) had hypertrophy of the ION (HION), of whom 6 showed laterality. In the 14 HION cases, with or without laterality, except in 1 unevaluable case, atrophy/myelin pallor of the central tegmental tract was observed on the same side as the hypertrophy. Ten patients with HION, with or without laterality, had atrophy/myelin pallor of the superior cerebellar peduncle on the contralateral side to the hypertrophy. CONCLUSION: The ION presents with hypertrophic changes in CBD. The lesion is a primary degeneration in CBD and is related to the degeneration of the Guillain-Mollaret triangle. This finding contributes to the elucidation of the specific pathological characteristics of CBD.


Assuntos
Degeneração Corticobasal , Hipertrofia , Núcleo Olivar , Humanos , Núcleo Olivar/patologia , Feminino , Masculino , Hipertrofia/patologia , Idoso , Pessoa de Meia-Idade , Estudos Retrospectivos , Idoso de 80 Anos ou mais , Degeneração Corticobasal/patologia , Complexo Olivar Inferior
9.
Brain Nerve ; 76(3): 221-229, 2024 Mar.
Artigo em Japonês | MEDLINE | ID: mdl-38514103

RESUMO

Many hematologic diseases can be complicated by neurological symptoms during the disease course. Hematologic diseases can contribute to strokes and neuropathies; thus, neurologists should be aware of them. Recent reports have increased of neurological side effects associated with new anticancer therapies such as immune checkpoint inhibitors and chimeric antigen receptor-T cell therapy. The relationship between hematologic diseases and neurological complications is expected to become more prevalent.


Assuntos
Doenças Hematológicas , Doenças do Sistema Nervoso , Acidente Vascular Cerebral , Humanos , Doenças Hematológicas/complicações , Doenças Hematológicas/terapia , Doenças do Sistema Nervoso/complicações , Doenças do Sistema Nervoso/terapia
10.
Int J Mol Sci ; 25(4)2024 Feb 11.
Artigo em Inglês | MEDLINE | ID: mdl-38396849

RESUMO

Degenerative diseases, encompassing a wide range of conditions affecting various organ systems, pose significant challenges to global healthcare systems. This comprehensive review explores the intricate interplay between the vascular system and degenerative diseases, shedding light on the underlying mechanisms and profound implications for disease progression and management. The pivotal role of the vascular system in maintaining tissue homeostasis is highlighted, as it serves as the conduit for oxygen, nutrients, and immune cells to vital organs and tissues. Due to the vital role of the vascular system in maintaining homeostasis, its dysfunction, characterized by impaired blood flow, endothelial dysfunction, and vascular inflammation, emerges as a common denominator of degenerative diseases across multiple systems. In the nervous system, we explored the influence of vascular factors on neurodegenerative diseases such as Alzheimer's and Parkinson's, emphasizing the critical role of cerebral blood flow regulation and the blood-brain barrier. Within the kidney system, the intricate relationship between vascular health and chronic kidney disease is scrutinized, unraveling the mechanisms by which hypertension and other vascular factors contribute to renal dysfunction. Throughout this review, we emphasize the clinical significance of understanding vascular involvement in degenerative diseases and potential therapeutic interventions targeting vascular health, highlighting emerging treatments and prevention strategies. In conclusion, a profound appreciation of the role of the vascular system in degenerative diseases is essential for advancing our understanding of degenerative disease pathogenesis and developing innovative approaches for prevention and treatment. This review provides a comprehensive foundation for researchers, clinicians, and policymakers seeking to address the intricate relationship between vascular health and degenerative diseases in pursuit of improved patient outcomes and enhanced public health.


Assuntos
Barreira Hematoencefálica , Doenças Neurodegenerativas , Humanos , Barreira Hematoencefálica/patologia , Doenças Neurodegenerativas/patologia , Circulação Cerebrovascular , Transporte Biológico , Homeostase
11.
Small ; 20(27): e2307828, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38368249

RESUMO

In recent years, there has been considerable focus on the development of charge transfer (CT) complex formation as a means to modify the band gaps of organic materials. In particular, CT complexes alternate layers of aromatic molecules with donor (D) and acceptor (A) properties to provide inherent electrical conductivity. In particular, the synthetic porous frameworks as attractive D-A components have been extensively studied in recent years in comparison to existing D-A materials. Therefore, in this work, the synthetic porous frameworks are classified into conjugated microporous polymers (CMPs), covalent organic frameworks (COFs), and metal-organic frameworks (MOFs) and compare high-quality materials for CT in semiconductors. This work updates the overview of the above porous frameworks for CT, starting with their early history regarding their semiconductor applications, and lists CT concepts and selected key developments in their CT complexes and CT composites. In addition, the network formation methods and their functionalization are discussed to provide access to a variety of potential applications. Furthermore, several theoretical investigations, efficiency improvement techniques, and a discussion of the electrical conductivity of the porous frameworks are also highlighted. Finally, a perspective of synthetic porous framework studies on CT performance is provided along with some comparisons.

12.
Geroscience ; 46(4): 3779-3800, 2024 08.
Artigo em Inglês | MEDLINE | ID: mdl-38319539

RESUMO

Cerebral small vessel diseases (CSVD) are neurological disorders associated with microvessels, manifested pathologically as white matter (WM) changes and cortical microbleeds, with hypertension as a risk factor. Additionally, a high-fat diet (HFD) can affect peripheral vessel health. Our study explored how HFD affects cerebral small vessels in normotensive WKY, hypertensive SHR, and SHR/SP rats. The MRI results revealed that HFD specifically increased WM hyperintensity in SHR/SP rats. Pathologically, it increased WM pallor and vacuolation in SHR and SHR/SP rats. Levels of blood-brain barrier (BBB) protein claudin 5 were decreased in SHR and SHR/SP compared to WKY, with HFD having minimal impact on these levels. Conversely, collagen IV levels remained consistent among the rat strains, which were increased by HFD. Consequently, HFD caused vessel leakage in all rat strains, particularly within the corpus callosum of SHR/SP rats. To understand the underlying mechanisms, we assessed the levels of hypoxia-inducible factor-1α (HIF-1α), Gp91-phox, and neuroinflammatory markers astrocytes, and microglia were increased in SHR and SHR/SP compared to WKY and were further elevated by HFD in all rat strains. Gp91-phox was also increased in SHR and SHR/SP compared to WKY, with HFD causing an increase in WKY but little effect in SHR and SHR/SP. In conclusion, our study demonstrates that HFD, in combined with hypertension, intensifies cerebral pathological alterations in CSVD rats. This exacerbation involves increased oxidative stress and HIF-1α in cerebral vessels, triggering neuroinflammation, vascular basement membrane remodeling, IgG leakage, and ultimately WM damage.


Assuntos
Doenças de Pequenos Vasos Cerebrais , Dieta Hiperlipídica , Ratos Endogâmicos SHR , Ratos Endogâmicos WKY , Animais , Doenças de Pequenos Vasos Cerebrais/patologia , Doenças de Pequenos Vasos Cerebrais/etiologia , Dieta Hiperlipídica/efeitos adversos , Ratos , Masculino , Barreira Hematoencefálica/patologia , Imageamento por Ressonância Magnética , Subunidade alfa do Fator 1 Induzível por Hipóxia/metabolismo , Claudina-5/metabolismo , Modelos Animais de Doenças , Substância Branca/patologia , NADPH Oxidase 2/metabolismo , Hipertensão/patologia
14.
Neurotoxicology ; 100: 3-15, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38040126

RESUMO

α-Pyrrolidinononanophenone (α-PNP) derivatives are known to be one of the hazardous new psychoactive substances due to the most extended hydrocarbon chains of any pyrrolidinophenones on the illicit drug market. Our previous report showed that 4'-iodo-α-PNP (I-α-PNP) is the most potent cytotoxic compound among α-PNP derivatives and induces apoptosis due to mitochondrial dysfunction and suppression of nitric oxide (NO) production in differentiated human neuronal SH-SY5Y cells. In this study, to clarify the detailed action mechanisms by I-α-PNP, we investigated the mechanism of reactive oxygen species (ROS) -dependent apoptosis by I-α-PNP in differentiated SH-SY5Y with a focus on the antioxidant activities. Treatment with I-α-PNP elicits overproduction of ROS such as H2O2, hydroxyl radical, and 4-hydroxy-2-nonenal, and pretreatment with antioxidant N-acetyl-L-cysteine is attenuated the SH-SY5Y cells apoptosis by I-α-PNP. These results suggested that the overproduction of ROS is related to SH-SY5Y cell apoptosis by I-α-PNP. In addition, I-α-PNP markedly decreased antioxidant capacity in differentiated cells than in undifferentiated cells and inhibited the upregulation of hemeoxygenase 1 (HO1) and glutathione peroxidase 4 (GPX4) expression caused by induction of differentiation. Furthermore, the treatment with I-α-PNP increased the nuclear expression level of BTB Domain And CNC Homolog 1 (Bach1), a transcriptional repressor of Nrf2, only in differentiated cells, suggesting that the marked decrease in antioxidant capacity in differentiated cells was due to suppression of Nrf2/HO1 signaling by Bach1. Additionally, pretreatment with an NO donor suppresses the I-α-PNP-evoked ROS overproduction, HO1 down-regulation, increased nuclear Bach1 expression and reduced antioxidant activity in the differentiated cells. These findings suggest that the ROS-dependent apoptosis by I-α-PNP in differentiated cells is attributed to the inactivation of the Nrf2/HO1 signaling pathway triggered by NO depletion.


Assuntos
Antioxidantes , Cetonas , Neuroblastoma , Pirrolidinas , Humanos , Antioxidantes/farmacologia , Fator 2 Relacionado a NF-E2/metabolismo , Óxido Nítrico , Heme Oxigenase-1/metabolismo , Espécies Reativas de Oxigênio/metabolismo , Peróxido de Hidrogênio , Linhagem Celular Tumoral , Neuroblastoma/metabolismo , Apoptose , Transdução de Sinais
15.
Biochem Biophys Res Commun ; 694: 149386, 2024 01 29.
Artigo em Inglês | MEDLINE | ID: mdl-38134476

RESUMO

Radiation exposure poses a significant threat to cellular integrity by inducing DNA damage through the generation of free radicals and reactive oxygen species. Ascorbic acid, particularly its derivative Palmitoyl Ascorbic Acid 2-Glucoside (PA2G), has demonstrated remarkable radioprotective properties. While previous research focused on its pre-irradiation application, this study explores the post-irradiation radiomitigation potential of PA2G. Our findings reveal that post-irradiation treatment with PA2G enhances cell survival and accelerates DNA repair processes, particularly the non-homologous end-joining (NHEJ) repair pathway. Notably, PA2G treatment reduces the frequency of lethal chromosomal aberrations and micronuclei formation, indicating its ability to enhance the repair of complex DNA lesions. Furthermore, PA2G is shown to play a role in potentially lethal damage repair (PLDR). These radioprotective effects are specific to NHEJ and ATM pathways, as cells deficient in these mechanisms do not benefit from PA2G treatment. This study highlights PA2G as a versatile radioprotector, both pre- and post-irradiation, with significant potential for applications in radiation therapy and protection, offering new insights into its mechanism of action. Further research is required to elucidate the precise molecular mechanisms underlying PA2G's radiomitigation effects and its potential clinical applications.


Assuntos
Reparo do DNA , Glucosídeos , Sobrevivência Celular , Glucosídeos/farmacologia , Dano ao DNA , Ácido Ascórbico/farmacologia , Reparo do DNA por Junção de Extremidades
16.
ACS Omega ; 8(50): 47913-47918, 2023 Dec 19.
Artigo em Inglês | MEDLINE | ID: mdl-38144125

RESUMO

Covalent organic frameworks (COFs) are a class of crystalline porous materials distinctively built solely from organic elements, carbon, oxygen, hydrogen, and often nitrogen or boron. They form light, mechanically rigid, and chemically stable networks that have many advantages, but their low solubility and poor processability create issues with developing large-scale films or membranes. Two-dimensional (2D) COFs possess periodic porous crystallinity, functionality, modularity, and layered one-dimensional (1D) transport channels. All of these traits, along with the semiconducting properties of selected COFs, make them interesting candidates for integration in optoelectronic devices. Therefore, it is still a challenge to explore computationally and structurally the semiconductivity of COFs and to determine their final potential. Herein, we report on the possible semiconducting properties and results of polyimide-COF materials using density functional theory calculations. Our analysis includes monolayers and multilayers (AA- and AB-stacked modes) of mellitic triimide frameworks designed from mellitic trianhydride (MTA) as the main building knot, including MTI-TAPB-COF, which was previously synthesized from the condensation reaction of MTA and 1,3,5-tris(4-aminophenyl)benzene (TAPB), and other previously unreported structures based on MTA. Respective frameworks have been selected due to the difference in building block symmetry (C3 + C2 and C3 + C3) and different chemical linkages, either by benzene or by pyridine rings. We find the polyimide multilayers to be stable and with varying electronic properties. The finite band gap exhibited by every structure (monolayer and stacked) was sensitive to atomic arrangement. Stacking introduces dispersion to an otherwise flat band structure of the materials, which appeared to be highly sensitive to stacking direction. The effect of stacking was similar for each COF, but the magnitude of band structure change was different and dependent on the symmetry of the building blocks.

17.
Intern Med ; 2023 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-37926538

RESUMO

Human brucellosis, one of the most common zoonoses worldwide, is rare in Japan. Brucella canis is the specific pathogen of human brucellosis carried by dogs. According to an epidemiological study of B. canis infection in Japan, B. canis is the specific pathogen of human brucellosis in dogs. We herein report a rare case of meningoencephalomyelitis caused by B. canis in a 68-year-old Japanese man. Neurobrucellosis was diagnosed based on a serum tube agglutination test and abnormal cerebrospinal fluid findings. The patient was started on targeted treatment with a combination of doxycycline and streptomycin. Although extremely rare, neurobrucellosis should be considered in patients with a fever of unknown origin and unexplained neurological symptoms.

18.
ACS Omega ; 8(46): 44172-44182, 2023 Nov 21.
Artigo em Inglês | MEDLINE | ID: mdl-38027392

RESUMO

We reported a new ternary hybrid anhydrous proton-conducting material based on triazole (Tz), wherein it interacted with TiO2 and cesium hydrogen sulfate (CHS) constructed based on the acid-base interaction. It exhibited high proton conductivity derived by the two acid-base interactions: between CHS and Tz and between Tz and TiO2. As a starting point of discussion, we attempted to theoretically predict the high/low proton conductivity using the push-pull protonated atomic distance (PAD) law, which makes it possible to predict the proton conductivity in the acid-base part based on density functional theory. The calculations indicate the possibility of achieving higher proton conductivity in the ternary composites (CHS·Tz-TiO2) involving two acid-base interactions than in binary hybrids, such as CHS·Tz and TiO2-Tz composites, suggesting the positive effect of two simultaneous acid-base interactions for achieving high proton conductivity. This result is supported by the experimental result with respect to synthesized materials obtained using the mechanochemical method. Adding TiO2 to the CHS·Tz system causes a change in the CHS·Tz interaction and promotes proton dissociation, producing a new and fast proton-conducting layer through the formation of Tz-TiO2 interaction. Applying CHS·Tz-TiO2 to high-temperature proton exchange membrane fuel cells results in improved membrane conductivity and power-generation properties at 150 °C under anhydrous conditions.

19.
RSC Adv ; 13(43): 30401-30419, 2023 Oct 11.
Artigo em Inglês | MEDLINE | ID: mdl-37849707

RESUMO

Recent electrochemical energy conversion devices require more advanced proton conductors for their broad applications, especially, proton exchange membrane fuel cell (PEMFC) construction. Covalent organic frameworks (COFs) are an emerging class of organic porous crystalline materials that are composed of organic linkers and connected by strong covalent bonds. The unique characteristics including well-ordered and tailorable pore channels, permanent porosity, high degree of crystallinity, excellent chemical and thermal stability, enable COFs to be the potential proton conductors in fuel cell devices. Generally, proton conduction of COFs is dependent on the amount of water (extent of humidity). So, the constructed fuel cells accompanied complex water management system which requires large radiators and airflow for their operation at around 80 °C to avoid overheating and efficiency roll-off. To overcome such limitations, heavy-duty fuel cells require robust proton exchange membranes with stable proton conduction at elevated temperatures. Thus, proton conducting COFs under anhydrous conditions are in high demand. This review summarizes the recent progress in emerging COFs that exhibit proton conduction under anhydrous conditions, which may be prospective candidates for solid electrolytes in fuel cells.

20.
Artigo em Inglês | MEDLINE | ID: mdl-37380221

RESUMO

Background and purpose: Oral health affects systemic health and the importance of maintaining good oral health is acknowledged. The high prevalence of oral diseases is associated with low health literacy (HL). Therefore, the purpose of this study was to investigate whether comprehensive HL in community-dwelling older adults is associated with objective oral hygiene and oral health-related quality of life (OHRQoL). Methods: Participants aged ≥65 years completed a self-administered questionnaire. On the same day, data collected with the oral health assessment tool were used to assess participants' objective oral status. The questionnaire included the general oral health assessment index to measure OHRQoL and the short version of the European Health Literacy Survey Questionnaire to assess comprehensive HL. Data were analyzed by univariate and multiple logistic regression. Results: In total, 145 people consented to participate in this study, of whom 118 (81.4%) responded effectively. Of the 118 participants, 18% recorded a rating of "unhealthy" for oral cleanliness in objective oral hygiene. Multiple logistic regression analysis identified comprehensive HL as a related factor for both oral cleanliness and OHRQoL (odds ratio = 5.00 and 3.33, p < 0.01 and p < 0.05, respectively). Implications for Practice: These findings indicate that comprehensive HL changes clinical outcomes. Because older adults often have comorbidities as well as oral health problems, it is important for nurses to assess HL during follow-up for comorbidities and take the opportunity to provide personalized oral health guidance and improve OHRQoL.

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