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1.
Front Pharmacol ; 15: 1365151, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38689663

RESUMO

Preparations of black cohosh extract are sold as dietary supplements marketed to relieve the vasomotor symptoms of menopause, and some studies suggest it may protect against postmenopausal bone loss. Postmenopausal women are also frequently prescribed bisphosphonates, such as risedronate, to prevent osteoporotic bone loss. However, the pharmacodynamic interactions between these compounds when taken together is not known. To investigate possible interactions, 6-month-old, female Sprague-Dawley rats underwent bilateral ovariectomy or sham surgery and were treated for 24 weeks with either vehicle, ethinyl estradiol, risedronate, black cohosh extract or coadministration of risedronate and black cohosh extract, at low or high doses. Bone mineral density (BMD) of the femur, tibia, and lumbar vertebrae was then measured by dual-energy X-ray absorptiometry (DEXA) at weeks 0, 8, 16, and 24. A high dose of risedronate significantly increased BMD of the femur and vertebrae, while black cohosh extract had no significant effect on BMD individually and minimal effects upon coadministration with risedronate. Under these experimental conditions, black cohosh extract alone had no effect on BMD, nor did it negatively impact the BMD-enhancing properties of risedronate.

2.
Anal Chem ; 96(15): 5976-5984, 2024 Apr 16.
Artigo em Inglês | MEDLINE | ID: mdl-38587278

RESUMO

Nanoparticles (NPs) are anticipated to be used for various biomedical applications in which their aggregation has been an important issue. However, concerns regarding slightly aggregated but apparently monodispersed NPs have been difficult to address because of a lack of appropriate evaluation methods. Here, we report centrifugal field-flow fractionation (CF3) as a powerful method for analyzing the slight aggregation of NPs, using antibody-modified gold NPs (Ab-AuNPs) prepared by a conventional protocol with centrifugal purification as a model. While common evaluation methods such as dynamic light scattering cannot detect significant signs of aggregation, CF3 successfully detects distinct peaks of slightly aggregated NPs, including dimers and trimers. Their impact on biological interactions was also demonstrated by a cellular uptake study: slightly aggregated Ab-AuNPs exhibited 1.8 times higher cellular uptake than monodispersed Ab-AuNPs. These results suggest the importance of aggregate evaluation via CF3 as well as the need for careful attention to the bioconjugation procedures for NPs.


Assuntos
Fracionamento por Campo e Fluxo , Nanopartículas Metálicas , Ouro , Difusão Dinâmica da Luz , Transporte Biológico , Fracionamento por Campo e Fluxo/métodos
3.
Curr Opin Biotechnol ; 87: 103108, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38513338

RESUMO

Biomedical applications of nanoparticles (NPs) have attracted much attention. With the advancement of personalized medicine, researchers are now proposing the concept that the design of NPs needs to be optimized according to the individual patient. To realize this concept, an important question is how precisely we can tailor the physicochemical properties of NPs, such as size, shape, and surface chemistry, using current technology. This review discusses recent advances and challenges in the precise control of the size, shape, and surface chemistry of NPs. While control methods have advanced significantly over the past 20 years, the size, shape, and surface chemistry of currently available NPs vary by type, requiring careful selection based on the targeted disease, organ, and patient.


Assuntos
Nanopartículas , Medicina de Precisão , Medicina de Precisão/métodos , Nanopartículas/química , Humanos , Propriedades de Superfície , Tamanho da Partícula
4.
Rinsho Shinkeigaku ; 64(3): 185-189, 2024 Mar 22.
Artigo em Japonês | MEDLINE | ID: mdl-38382934

RESUMO

A 71-year-old male who suffered from Hoehn and Yahr stage III Parkinson's disease with bradykinesia, rigidity and a 5-6-Hz tremor at rest in the right extremities was admitted to our hospital due to the sudden onset of vertigo. Right cerebellar hemorrhage was confirmed by CT. The patient's resting tremor in the right extremities disappeared immediately following the cerebellar hemorrhage. Six days later, MRI showed Wallerian degeneration in the cerebello-rubro-thalamic tract. Approximately 5 months later, a 2-3-Hz Holmes' tremor gradually appeared in the right upper extremity. This tremor was improved by increasing L-dopa doses. Case reports of the disappearance of Parkinson's resting tremor and subsequent emergence of Holmes' tremor due to cerebellar lesion are rare. Furthermore, the Wallerian degeneration of the cerebello-rubro-thalamic tract identified on MRI between tremors of the different frequencies is very rare. We hypothesize that the cause of the tremor frequency change was simultaneous damage to the nigro-striatal network and the cerebello-thalamo-cerebral network.


Assuntos
Doença de Parkinson , Tremor , Masculino , Humanos , Idoso , Tremor/etiologia , Doença de Parkinson/complicações , Doença de Parkinson/patologia , Degeneração Walleriana/patologia , Tálamo/diagnóstico por imagem , Hemorragia Cerebral/diagnóstico por imagem , Hemorragia Cerebral/etiologia
5.
Jpn J Infect Dis ; 77(3): 155-160, 2024 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-38296544

RESUMO

Human parainfluenza virus type 3 (HPIV-3, human respirovirus 3) is the second most frequently detected virus in lower respiratory tract infections in children after human respiratory syncytial virus (HRSV). HPIV-3, similar to related respiratory viruses such as HRSV and influenza virus, may cause encephalopathy; however, the relevance of HPIV-3 as a pathogenic factor in encephalopathy is unknown. We attempted to detect HPIV-1, HPIV-2, HPIV-3, HPIV-4, HRSV, and human metapneumovirus (HMPV) in 136 patients with encephalitis/encephalopathy or suspected encephalitis/encephalopathy during a 6-year period from 2014 to 2019. HPIV-3 was detected in 6 patients, followed by HRSV in 3 patients. The HPIV-3 strains detected were closely related to those detected in a patient with respiratory disease during the same period. Although HPIV-3 is less widely recognized than HRSV as a triggering virus of encephalopathy, our results suggest that HPIV-3 is as important as HRSV. Surveillance of the causative viruses of encephalopathy, including HPIV-3, would help clarify the causes of encephalopathy in Japan, as the cause is currently reported in less than half of cases in Japan.


Assuntos
Vírus da Parainfluenza 3 Humana , Infecções por Respirovirus , Humanos , Vírus da Parainfluenza 3 Humana/genética , Vírus da Parainfluenza 3 Humana/isolamento & purificação , Japão/epidemiologia , Pré-Escolar , Masculino , Feminino , Criança , Lactente , Infecções por Respirovirus/virologia , Infecções por Respirovirus/epidemiologia , Adolescente , Infecções Respiratórias/virologia , Infecções Respiratórias/epidemiologia , Filogenia , Adulto , Encefalite Viral/virologia , Adulto Jovem , Pessoa de Meia-Idade , Encefalopatias/virologia , Idoso , Vírus Sincicial Respiratório Humano/genética , Vírus Sincicial Respiratório Humano/isolamento & purificação
6.
Reprod Toxicol ; 123: 108523, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38092131

RESUMO

Understanding drug transport across the placental barrier is important for assessing the potential fetal drug toxicity and birth defect risks. Current in vivo and in vitro models have structural and functional limitations in evaluating placental drug transfer and toxicity. Microphysiological systems (MPSs) offer more accurate and relevant physiological models of human tissues and organs on a miniature scale for drug development and toxicology testing. MPSs for the placental barrier have been recently explored to study placental drug transfer. We utilized a multilayered hydrogel membrane-based microphysiological model composed of human placental epithelial and endothelial cells to replicate the key structure and function of the human placental barrier. A macroscale human placental barrier model was created using a transwell to compare the results with the microphysiological model. Placental barrier models were characterized by assessing monolayer formation, intercellular junctions, barrier permeability, and their structural integrity. Three small-molecule drugs (glyburide, rifaximin, and caffeine) that are prescribed or taken during pregnancy were studied for their placental transfer. The results showed that all three drugs crossed the placental barrier, with transfer rates in the following order: glyburide (molecular weight, MW = 494 Da) < rifaximin (MW = 785.9 Da) < caffeine (MW = 194.19 Da). Using non-compartmental analysis, we estimated human pharmacokinetic characteristics based on in vitro data from both MPS and transwell models. While further research is needed, our findings suggest that MPS holds potential as an in vitro tool for studying placental drug transfer and predicting fetal exposure, offering insights into pharmacokinetics.


Assuntos
Glibureto , Placenta , Humanos , Gravidez , Feminino , Células Endoteliais , Cafeína , Rifaximina
7.
Genes (Basel) ; 14(2)2023 01 19.
Artigo em Inglês | MEDLINE | ID: mdl-36833186

RESUMO

The focus of this brief review is to describe the application of nanoparticles, including endogenous nanoparticles (e.g., extracellular vesicles, EVs, and virus capsids) and exogenous nanoparticles (e.g., organic and inorganic materials) in cancer therapy and diagnostics. In this review, we mainly focused on EVs, where a recent study demonstrated that EVs secreted from cancer cells are associated with malignant alterations in cancer. EVs are expected to be used for cancer diagnostics by analyzing their informative cargo. Exogenous nanoparticles are also used in cancer diagnostics as imaging probes because they can be easily functionalized. Nanoparticles are promising targets for drug delivery system (DDS) development and have recently been actively studied. In this review, we introduce nanoparticles as a powerful tool in the field of cancer therapy and diagnostics and discuss issues and future prospects.


Assuntos
Vesículas Extracelulares , Nanopartículas , Neoplasias , Humanos , Sistemas de Liberação de Medicamentos/métodos , Comunicação Celular
8.
J Biosci Bioeng ; 135(4): 341-347, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36732209

RESUMO

Diffuse large B-cell lymphoma (DLBCL) is the most common type of malignant lymphoma. Although the first-line treatment, R-CHOP treatment, shows efficacy in approximately 80% of patients with DLBCL, some patients have refractory disease or relapse after the initial response to therapy, resulting in a significantly poorer prognosis. In this study, we developed a microRNA (miRNA) signature-based companion diagnostic model to predict the response of patients with DLBCL to R-CHOP treatment by integrating two clinical study datasets. To select the optimum miRNA combination as a panel, we examined three feature selection methods (p-value-based ranking, stepwise method, and Boruta), together with 11 types of classifiers systematically. Boruta selection enabled a higher area under the curve (AUC) with a lower number of miRNAs compared with other feature selection methods, leading to an AUC of 0.751 via the random forest classifier using 36 miRNAs. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis suggested that Boruta avoided multiple selection of miRNAs with similar functions, thereby preventing the decrease in diagnostic ability via collinearity. The AUC value first increased with an increasing number of miRNAs and then became almost constant at approximately 30 miRNAs, suggesting the existence of the optimum number of miRNAs as a panel for future clinical translation of multiple miRNA-based diagnostics.


Assuntos
Linfoma Difuso de Grandes Células B , MicroRNAs , Humanos , MicroRNAs/genética , MicroRNAs/metabolismo , Rituximab/uso terapêutico , Linfoma Difuso de Grandes Células B/tratamento farmacológico , Linfoma Difuso de Grandes Células B/genética , Linfoma Difuso de Grandes Células B/metabolismo , Ciclofosfamida/uso terapêutico , Vincristina/uso terapêutico , Doxorrubicina/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico
9.
PLoS One ; 18(2): e0279878, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36827247

RESUMO

BACKGROUND AND OBJECTIVES: The prognosis of idiopathic chronic fibrotic interstitial pneumonitis (CFIP) in patients with acute exacerbation (AE) is variable. We examined whether the imaging pattern on thoracic computed tomography (CT) or the severity of respiratory failure with AE-CFIP is associated with short-term prognosis. METHODS: Patients admitted to two university hospitals were retrospectively analyzed and divided into derivation and validation cohorts. The distribution of newly appearing parenchymal abnormalities on thoracic CT was classified into peripheral, multifocal, and diffuse patterns. Respiratory failure was defined as severe if a fraction of inspired oxygen ≥ 0.5 was required to maintain percutaneous oxygen saturation ≥ 90% on admission. Factors associated with 90 day-mortality were analyzed using univariate and Cox proportional hazard regression. RESULTS: In 59 patients with AE-CFIP of the derivation cohort, diffuse pattern on CT was associated with higher mortality within 90 days (43%) than peripheral/multifocal pattern (17%, p = 0.03). Additionally, compared with non-severe failure, severe respiratory failure was associated with higher mortality (47% vs. 21%, p = 0.06). Cox proportional hazard regression analysis demonstrated that a combination of diffuse pattern on CT and severe respiratory failure was associated with the poorest prognosis (hazard ratio [HR] 3.51 [interquartile range 1.26-9.80], p = 0.016) in the derivation cohort, which was confirmed in the validation cohort (n = 31, HR 4.30 [interquartile range 1.51-12.2], p = 0.006). CONCLUSION: The combination of imaging pattern on thoracic CT and severity of respiratory failure was associated with the prognosis of idiopathic AE-CFIP.


Assuntos
Pneumonias Intersticiais Idiopáticas , Fibrose Pulmonar Idiopática , Doenças Pulmonares Intersticiais , Insuficiência Respiratória , Humanos , Estudos Retrospectivos , Prognóstico , Tomografia Computadorizada por Raios X/métodos , Progressão da Doença
10.
ACS Omega ; 8(1): 1343-1352, 2023 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-36643500

RESUMO

Stimuli-responsive star polymers are promising functional materials whose aggregation, adhesion, and interaction with cells can be altered by applying suitable stimuli. Among several stimuli assessed, the potassium ion (K+), which is known to be captured by crown ethers, is of considerable interest because of the role it plays in the body. In this study, a K+-responsive star copolymer was developed using a polyglycerol (PG) core and grafted copolymer arms consisting of a thermo-responsive poly(N-isopropylacrylamide) unit, a metal ion-recognizing benzo-18-crown-6-acrylamide unit, and a photoluminescent fluorescein O-methacrylate unit. Via optimization of grafting density and copolymerization ratio of grafted arms, along with the use of hydrophilic hyperbranched core, microsized aggregates with a diameter of 5.5 µm were successfully formed in the absence of K+ ions without inducing severe sedimentation (the lower critical solution temperature (LCST) was 35.6 °C). In the presence of K+ ions, these aggregates dispersed due to the shift in LCST (47.2 °C at 160 mM K+), which further induced the activation of fluorescence that was quenched in the aggregated state. Furthermore, macrophage targeting based on the micron-sized aggregation state and subsequent fluorescence activation of the developed star copolymers in response to an increase in intracellular K+ concentration were performed as a potential K+ probe or K+-responsive drug delivery vehicle.

11.
Cancer Genomics Proteomics ; 20(1): 1-8, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36581341

RESUMO

BACKGROUND/AIM: Prostate cancer (PCa) is one of the most common types of cancer in men. Prostate-specific antigen (PSA) is currently the only biomarker used to screen for the risk of developing PCa. Because PSA tests may show false positives, identifying novel PCa-specific biomarkers would improve prediction and diagnosis at an early stage. Previously, we identified a number of genes/microRNAs (miRNAs) in prostate tissue as potential biomarkers of chronic prostatitis in a rat model of chemical-induced prostatitis. The current study aimed to evaluate their potential for use as translational, diagnostic markers in humans. MATERIALS AND METHODS: We performed quantitative polymerase chain reaction analysis using pathologically clear (normal) or confirmed PCa tissue samples from the same patients (N=18 per group). RESULTS: Levels (relative fold changes) of bone morphogenetic protein 7 (BMP7) transcripts were significantly lower in PCa tissues, compared with clear tissues, in a paired t-test (p=0.0075). Although neural cell adhesion molecule 1 (NCAM1) transcripts tended to be altered in PCa tissues, statistically insignificant differences were observed (p=0.0521). No statistically significant differences were observed for the other genes/miRNAs analyzed in PCa tissues due to a high degree of individual variance in expression. CONCLUSION: Similar to the results previously observed in rats, changes in the levels of BMP7 and NCAM1 transcripts were evident in human PCa tissues, suggesting that these genes may serve as potential diagnostic biomarkers during the early stages of PCa. Further studies are needed to determine the potential use of these molecules as biomarkers.


Assuntos
MicroRNAs , Neoplasias da Próstata , Prostatite , Masculino , Humanos , Animais , Ratos , Próstata/metabolismo , Antígeno Prostático Específico/análise , Antígeno Prostático Específico/metabolismo , Prostatite/diagnóstico , Prostatite/metabolismo , Pesquisa Translacional Biomédica , Neoplasias da Próstata/diagnóstico , Neoplasias da Próstata/genética , Neoplasias da Próstata/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , Biomarcadores Tumorais/genética , Biomarcadores Tumorais/metabolismo
12.
Allergol Int ; 72(2): 286-296, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36272899

RESUMO

BACKGROUND: The safety and efficacy of omalizumab in chronic spontaneous urticaria (CSU) patients has been established, but real-world long-term data remain scarce, especially in Japan. METHODS: 52-week, open-label, single-arm, observational study evaluated the safety and effectiveness of first-time omalizumab in Japanese CSU patients responding inadequately to conventional therapies. RESULTS: Overall, 235 of 280 patients completed the study. Most patients were aged ≥ 18 and < 65 years; adolescents (≥ 12 and ≤ 18 years) accounted for 9.6% of the total population. The mean ± standard deviation (SD) duration of CSU at baseline was 1.6 ± 3.1 years; 46.1% of patients had had CSU for < 6 months. At baseline, the mean ± SD of Urticaria Control Test (UCT) score, Weekly Urticaria Activity Score (UAS7), and Dermatology Life Quality Index (DLQI) were 5.1 ± 3.2, 25.2 ± 11.9, and 8.4 ± 5.9, respectively. The mean ± SD duration of the observation period was 330.3 ± 86.2 days. Relapse was reported in 65 patients, 51, 9, and 5 of whom required retreatment with omalizumab 1, 2, and ≥ 3 times, respectively. The incidence of adverse events (AEs), serious AEs, and adverse drug reactions (ADRs) was reported in 11.8%, 1.4%, and 3.9% of patients, respectively. The most common AEs were urticaria (1.8%) and eczema (1.1%). No adolescents experienced ADRs. A cumulative of 92.8% of patients responded in the Physician's Global Impression of Change, with 81.3%, 75.0%, and 95.1% of patients achieving UCT ≥ 12, UAS7 ≤ 6, and DLQI ≤ 5 up to Week 52, respectively. CONCLUSIONS: This study supports the safety and effectiveness of omalizumab in CSU patients who responded inadequately to conventional therapies in real-world clinical practice in Japan.


Assuntos
Antialérgicos , Urticária Crônica , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Urticária , Humanos , Omalizumab/efeitos adversos , Antialérgicos/efeitos adversos , População do Leste Asiático , Urticária Crônica/tratamento farmacológico , Urticária/tratamento farmacológico , Urticária/induzido quimicamente , Doença Crônica , Vigilância de Produtos Comercializados , Resultado do Tratamento
13.
Plant Biotechnol (Tokyo) ; 40(4): 283-288, 2023 Dec 25.
Artigo em Inglês | MEDLINE | ID: mdl-38434113

RESUMO

Rose is a major ornamental plant, and a lot of cultivars with attractive morphology, color and scent have been generated by classical breeding. Recent progress of genetic modification produces a novel cultivar with attractive features. In both cases, a major problem is the gene-flow from cultivated or genetically modified (GM) plants to wild species, causing reduction of natural population. To investigate whether gene-flow occurs in wild species, molecular analysis with DNA markers with higher efficient technique is useful. Here we investigated the gene-flow from cultivated roses (Rosa×hybrida) to wild rose species planted in close distance in the field. The overlapping flowering periods and visiting insects suggest that pollens were transported by insects between wild and cultivated roses. We examined the germination ratio of seeds from wild species, and extracted DNA and checked with KSN and APETALA2 (AP2) DNA markers to detect transposon insertions. Using two markers, we successfully detected the outcross between wild and cultivated roses. For higher efficiency, we established a bulking method, where DNA, leaves or embryos were pooled, enabling us to that check the outcross of many plants. Our results suggest that wild species and garden cultivars can cross in close distance, so that they should be planted in distance, and checked the outcross with multiple DNA markers.

14.
PLoS One ; 17(9): e0274283, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36137152

RESUMO

In recent years, new direct-acting antivirals for hepatitis C virus (HCV) have been approved, but hepatitis C continues to pose a threat to human health. It is important to develop neutralizing anti-HCV antibodies to prevent medical and accidental infection, such as might occur via liver transplantation of chronic HCV patients and needle-stick accidents in the clinic. In this study, we sought to obtain anti-HCV antibodies using phage display screening. Phages displaying human hepatocellular carcinoma patient-derived antibodies were screened by 4 rounds of biopanning with genotype-1b and -2a HCV envelope E2 protein adsorbed to magnetic beads. The three antibodies obtained from this screen had reactivity against E2 proteins derived from both genotype-1b and -2a strains. However, in epitope analysis, these antibodies did not recognize linear peptides from an overlapping E2 epitope peptide library, and did not bind to denatured E2 protein. In addition, these antibodies showed cross-genotypic neutralizing activity against genotype-1a, -1b, -2a, and -3a cell culture-generated infectious HCV particles (HCVcc). Moreover, emergence of viral escape mutants was not observed after repeated rounds of passaging of HCV-infected cells in the presence of one such antibody, e2d066. Furthermore, injection of the e2d066 antibody into human hepatocyte-transplanted immunodeficient mice inhibited infection by J6/JFH-1 HCVcc. In conclusion, we identified conformational epitope-recognizing, cross-genotypic neutralizing antibodies using phage display screening. Notably, e2d066 antibody did not select for escape mutant emergence in vitro and demonstrated neutralizing activity in vivo. Our results suggested that these antibodies may serve as prophylactic and therapeutic agents.


Assuntos
Hepatite C Crônica , Hepatite C , Animais , Anticorpos Monoclonais , Anticorpos Neutralizantes , Antivirais/metabolismo , Epitopos , Hepacivirus , Anticorpos Anti-Hepatite C , Humanos , Camundongos , Biblioteca de Peptídeos , Proteínas do Envelope Viral
15.
Life (Basel) ; 12(9)2022 Aug 25.
Artigo em Inglês | MEDLINE | ID: mdl-36143344

RESUMO

The purpose of this study is to correlate quantitative T1, T2, and proton density (PD) values with breast cancer subtypes. Twenty-eight breast cancer patients underwent MRI of the breast including synthetic MRI. T1, T2, and PD values were correlated with Ki-67 and were compared between ER-positive and ER-negative cancers, and between Luminal A and Luminal B cancers. The effectiveness of T1, T2, and PD in differentiating the ER-negative from the ER-positive group and Luminal A from Luminal B cancers was evaluated using receiver operating characteristic analysis. Mean T2 relaxation of ER-negative cancers was significantly higher than that of ER-positive cancers (p < 0.05). The T1, T2, and PD values exhibited a strong positive correlation with Ki-67 (Pearson's r = 0.75, 0.69, and 0.60 respectively; p < 0.001). Among ER-positive cancers, T1, T2, and PD values of Luminal A cancers were significantly lower than those of Luminal B cancers (p < 0.05). The area under the curve (AUC) of T2 for discriminating ER-negative from ER-positive cancers was 0.87 (95% CI: 0.69−0.97). The AUC of T1 for discriminating Luminal A from Luminal B cancers was 0.83 (95% CI: 0.61−0.95). In conclusion, quantitative values derived from synthetic MRI show potential for subtyping of invasive breast cancers.

16.
BMJ Open ; 12(9): e062236, 2022 09 19.
Artigo em Inglês | MEDLINE | ID: mdl-36123101

RESUMO

OBJECTIVES: To analyse the clinical characteristics and prognosis of acute exacerbation (AE) in patients with idiopathic pulmonary fibrosis (IPF) and pulmonary emphysema. DESIGN: A multicentre retrospective cohort study SETTING: Two university hospitals in Japan PARTICIPANTS: Patients admitted to hospitals due to AE of IPF diagnosed based on a multidisciplinary discussion. INTERVENTIONS: None PRIMARY AND SECONDARY OUTCOME MEASURES: 90-day mortality rate METHODS: We retrospectively analysed consecutive patients with AE of IPF, with or without pulmonary emphysema, admitted to two university hospitals between 2007 and 2018. RESULTS: Among 62 patients (median age, 75 years; 48 men) admitted for AE of IPF, 29 patients (46%) presented with concomitant pulmonary emphysema. There was no significant difference in the arterial partial oxygen pressure/fraction of inhaled oxygen (P/F) ratio or other laboratory and radiographic data between patients with and without emphysema. The 90-day mortality rate was significantly lower in patients with emphysema than in those with IPF alone (23% vs 52%, p=0.03). The median survival time was significantly longer in patients with emphysema than in those with IPF alone (405 vs 242 days, p=0.02). CONCLUSION: Patients with IPF and emphysema had better short-term survival after AE than those with non-emphysematous IPF.


Assuntos
Fibrose Pulmonar Idiopática , Enfisema Pulmonar , Idoso , Estudos de Coortes , Humanos , Fibrose Pulmonar Idiopática/complicações , Japão , Masculino , Oxigênio , Prognóstico , Enfisema Pulmonar/complicações , Estudos Retrospectivos
17.
Reprod Toxicol ; 111: 194-203, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35714934

RESUMO

Although the use of medication during pregnancy is common, information on exposure to the developing fetus and potential teratogenic effects is often lacking. This study used a rat model to examine the placental transfer of three small-molecule drugs with molecular weights ranging from approximately 300 to 800 Da with different physicochemical properties. Time-mated Sprague Dawley (Hsd:SD) rats aged 11-13 weeks were administered either glyburide, rifaximin, or fentanyl at gestational day 15. Maternal blood, placentae, and fetuses were collected at 5 min, 30 min, 1 h, 4 h, 8 h, 24 h, 48 h, and 96 h post-dose. To characterize the rate and extent of placental drug transfer, we calculated several pharmacokinetic parameters such as maximum concentration (Cmax), time to maximum concentration (Tmax), area under the concentration-time curve (AUC), half-life (t1/2), clearance (CL), and volume of distribution (Vd) for plasma, placenta, and fetus tissues. The results indicated showed that fetal exposure was lowest for glyburide, accounting for only 2.2 % of maternal plasma exposure as measured by their corresponding AUC ratio, followed by rifaximin (37.9 %) and fentanyl (172.4 %). The fetus/placenta AUC ratios were found to be 10.7 % for glyburide, 11.8 % for rifaximin, and 39.1 % for fentanyl. These findings suggest that although the placenta acts as a protective shield for the fetus, the extent of protection varies for different drugs and depends on factors such as molecular weight, lipid solubility, transporter-mediated efflux, and binding to maternal and fetal plasma proteins.


Assuntos
Troca Materno-Fetal , Placenta , Animais , Feminino , Fentanila/metabolismo , Fentanila/farmacologia , Feto , Glibureto/metabolismo , Glibureto/farmacologia , Placenta/metabolismo , Gravidez , Ratos , Ratos Sprague-Dawley , Rifaximina/farmacologia
18.
RSC Adv ; 12(19): 11606-11611, 2022 Apr 13.
Artigo em Inglês | MEDLINE | ID: mdl-35432941

RESUMO

Conjugated polymer nanoparticles (Pdots) are expected to be novel bioimaging and sensing probes. However, the size tuning required to control biological interactions has not been well established. Herein, we achieved a size-tunable synthesis of Pdots ranging from 30 to 200 nm by controlling the hydrolysis rate of the stabilising agent and evaluated their cellular imaging properties.

19.
Carbohydr Polym ; 286: 119289, 2022 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-35337531

RESUMO

Carboxymethyl cellulose (CMC) is a promising material for moist wound healing, and silver loading onto CMC has been examined for anti-bacterial activity. In this study, we developed silver-loaded CMC nonwoven sheets with different counterions, namely sodium CMC (CMC-Na/Ag) and partially protonated CMC (CMC-H/Ag), to examine their anti-bacterial and wound-healing properties. Owing to the presence of counter protons, CMC-H/Ag showed slower water adsorption, dissolution, and Ag release than CMC-Na/Ag. In addition, CMC-H/Ag and CMC-Na/Ag exhibited differences in anti-bacterial activities in shake-flask and inhibition zone tests in vitro. An in vivo experiment using a pressure ulcer mouse model with Pseudomonas aeruginosa infection showed that CMC-Na/Ag significantly accelerated wound healing compared to CMC-H/Ag and a commercially available Ag-loaded CMC nonwoven sheet, Aquacel Ag. These results suggest the importance of controlling CMC counterions and the therapeutic potential of the developed product as a wound dressing.


Assuntos
Prata , Infecção dos Ferimentos , Animais , Bandagens , Carboximetilcelulose Sódica/farmacologia , Camundongos , Prata/farmacologia , Prata/uso terapêutico , Cicatrização , Infecção dos Ferimentos/tratamento farmacológico
20.
Intern Med ; 61(6): 789-800, 2022 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-34483208

RESUMO

Objective To evaluate the long-term safety and efficacy of indacaterol/glycopyrronium (IND/GLY) in patients with chronic obstructive pulmorary disease (COPD) in a real-world setting in Japan. Methods This 52-week, multicentre, post-marketing surveillance conducted in Japan between December 2013 and August 2019 included patients using IND/GLY for the first time to relieve airway obstructive disorder-related symptoms. Safety outcomes included the incidence of adverse events (AEs), serious AEs (SAEs), adverse drug reactions (ADRs), and serious ADRs during the 52-week period. The incidence of priority variables, including cardiovascular/cerebrovascular (CCV) AEs, ß-adrenergic-related or anticholinergic AEs and cough, was also assessed. Safety outcomes were also evaluated in elderly patients. Efficacy outcomes included a physician's global assessment, COPD assessment test (CAT) and lung function test. Results Of the 1,167 patients registered, 1,108 were included in the safety and efficacy analysis. In the safety analysis population, the incidence of AEs was 13.54%, that of SAEs was 4.69%, that of ADR was 3.61%, and that of serious ADRs was 0.36% over 52 weeks. CCV AEs, ß-adrenergic-related and anticholinergic AEs and cough were reported as 2.62%, 1.99% and 0.63%, respectively. The physician's global assessment showed that the overall response rate at the last assessment was 74.19%. The mean (95% confidence interval) CAT scores decreased from the start of treatment to Week 52 with IND/GLY [-6.9 (-7.8 to -6.1)]. The lung function (FEV1 and FVC) improved over time from the start of IND/GLY to Week 52. Conclusion IND/GLY demonstrated a good long-term safety profile in a real-world setting in Japanese patients with COPD, with beneficial effects in terms of the lung function and symptoms in clinical use.


Assuntos
Glicopirrolato , Doença Pulmonar Obstrutiva Crônica , Agonistas de Receptores Adrenérgicos beta 2/efeitos adversos , Idoso , Broncodilatadores/efeitos adversos , Combinação de Medicamentos , Volume Expiratório Forçado , Glicopirrolato/efeitos adversos , Humanos , Indanos/efeitos adversos , Japão/epidemiologia , Antagonistas Muscarínicos/efeitos adversos , Vigilância de Produtos Comercializados , Quinolonas , Resultado do Tratamento
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