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1.
Int Heart J ; 2020 Jan 17.
Artigo em Inglês | MEDLINE | ID: mdl-31956135

RESUMO

It has been recently recognized that recovery of left ventricular ejection fraction (EF), termed "recovered EF", occurs in a proportion of heart failure patients with reduced EF (HFrEF), and is associated with better prognosis. However, the clinical characteristics of "recovered EF" have not been fully examined.Consecutive 567 patients hospitalized due to HFrEF (EF < 40% at 1st assessment at hospital discharge) were enrolled, and EF was re-assessed within half a year in an outpatient setting (2nd assessment). Among these HFrEF patients, 235 remained EF < 40% (reduced, rEF group), 82 changed to EF 40-49% (midrange, mrEF group), and 250 recovered to EF > 50% (preserved, pEF group "recovered EF" ) at the 2nd examination. Age was lower and body mass index and systolic blood pressure were higher in pEF than in rEF. The prevalence of atrial fibrillation (AF) and usage of an implantable cardiac defibrillator and cardiac resynchronization therapy were highest in pEF. Left ventricular end diastolic dimension (LVDd) was the smallest in the pEF group. Multivariable logistic regression analysis revealed that younger age, presence of AF, and lower levels of LVDd were predictors of "recovered EF". Kaplan-Meier analysis found that pEF presented the lowest cardiac event rate (P = 0.003) and all-cause mortality (P = 0.001). In multivariable Cox proportional hazard analyses, pEF (versus rEF) was an independent predictor of both cardiac event rate (HR = 0.668, 95%CI 0.450-0.994, P = 0.046) and all-cause mortality (HR = 0.655, 95%CI 0.459-0.934, P = 0.019).Hospitalized HFrEF patients with recovered EF are associated with younger age, higher presence of AF, and better prognosis.

2.
J Bodyw Mov Ther ; 24(1): 109-114, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31987529

RESUMO

INTRODUCTION: Hamstring injuries tend to be chronic in nature and thus require considerable recovery time in athletes. Although some rehabilitation protocols have been previously advocated, there is no consensus in terms of the treatment protocol for chronic hamstring injuries. METHODS: We present the case of a 15-year-old male sprinter who was successfully treated with a combination of manual therapy targeting the lumbosacral region and hamstring-specific exercises. The patient presented with hamstring pain which persisted for 7 weeks. RESULTS: Manual therapy immediately reduced pain and increased muscle strength. The patient was able to run satisfactorily without pain 30 days after the initial intervention. CONCLUSIONS: This case report suggests that the use of manual therapy targeting the lumbosacral region, along with hamstring exercises, may be beneficial in chronic hamstring pain management.

3.
Anal Sci ; 36(1): 67-73, 2020 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-31685717

RESUMO

The electrochemical and photophysical properties of a heteroleptic Cu(I) complex bearing an aliphatic α-diimine ligand, [Cu(dab)(xantphos)]+ (Cu-dab; dab = N,N'-diphenyl-2,3-dimethyl-1,4-diazabutadiene, xantphos = 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene), were evaluated together with those of complexes [Cu(dmp)(xantphos)]+ (Cu-dmp; dmp = 2,9-dimethyl-1,10-phenanthroline), [Cu(dmbpy)(xantphos)]+ (Cu-dmbpy; dmbpy = 5,5'-dimethyl-2,2'-bipyridine), and [Cu(bq)(xantphos)]+ (Cu-bq; bq = 2,2'-biquinoline), bearing aromatic diimine ligands. Cu-dab exhibited a two-step ligand-centered redox behavior, where the first wave corresponded to an electrochemically reversible one-electron reduction process. Although Cu(I)-aromatic diimine complexes Cu-dmp, Cu-dmbpy, and Cu-bq exhibited obvious luminescence from the metal-to-ligand charge transfer (MLCT) excited state, Cu-dab did not show any luminescence. Computational studies indicated that this non-luminescent property was caused by the large structural relaxation of Cu-dab during photoexcitation.

4.
Sci Rep ; 9(1): 20242, 2019 Dec 27.
Artigo em Inglês | MEDLINE | ID: mdl-31882664

RESUMO

We have characterized highly conductive Si-doped GaN films with a high electron mobility of 112 cm2V-1s-1 at an electron concentration of 2.9 × 1020 cm-3, prepared using pulsed sputtering deposition (PSD). With an increase in the doping concentration, the absorption edge was found to shift toward a higher energy level, owing to the Burstein-Moss effect, thus making this material suitable for the transparent conductive tunneling electrodes of visible and ultraviolet-A light-emitting diodes. The full width at half maximum value of the near-band-edge (NBE) emissions in a photoluminescence spectrum measured at 77 K was as small as 185 meV, even for the sample with the highest electron concentration of 2.9 × 1020 cm-3. Such sharp NBE emissions from PSD-grown heavily Si-doped GaN films can be explained by an analytical model with a low compensation ratio θ of around 0.1, which is consistent with the exceptionally high observed electron mobility. These results indicate the strong potential of the low-temperature PSD growth technique for the formation of high-quality, heavily Si-doped GaN.

6.
Artigo em Inglês | MEDLINE | ID: mdl-31776769

RESUMO

PURPOSE: Atrial fibrillation (AF) often coexists with atrial septal defects (ASD). Each of the transcatheter closure for ASD and radiofrequency catheter ablation (RFCA) for AF have been established as the first-line therapy. However, there are limited data about therapeutic effect RFCA plus transcatheter ASD closure on AF recurrence in AF patients with ASD. The aim of the current study was to investigate the clinical impact of ASD closure following RFCA on AF recurrence. METHODS: Forty-two ASD patients (17 males and 54 ± 20 years old) were enrolled and classified into three groups: ASD occlusion-sinus rhythm (ASO-SR) (n = 26), no AF history prior to ASD closure; ASO-AF-RFCA (n = 11), RFCA was performed due to AF history before ASD closure; and ASO-AF-anti-arrhythmic drug (ASO-AF-AAD) (n = 5), AF was treated with AAD before and after ASD closure. AF occurrence among the 3 groups was evaluated. RESULTS: Kaplan-Meier analysis showed that ASO-SR and ASO-AF-RFCA groups showed a lower AF occurrence ratio than ASO-AF-AAD group during the 14- ± 9-month follow-up periods (P = 0.013). AF occurrence in ASO-SR and ASO-AF-RFCA groups was comparable (P = 0.480). Bi-atrial reverse remodeling, such as decrease in left atrial volume index (P = 0.049) and right atrial area (P = 0.046), and significant decrease in high-sensitivity C-reactive protein levels (P = 0.049) were identified in ASO-AF-RFCA group, but not in ASO-AF-AAD group. CONCLUSION: A combination of two percutaneous therapies was proven to be effective and induced bi-atrial reverse remodeling in association with inflammatory reaction.

7.
Microbiol Immunol ; 2019 Nov 23.
Artigo em Inglês | MEDLINE | ID: mdl-31758567

RESUMO

Equine herpesvirus-1 (EHV-1), which causes encephalomyelitis in horses, shows endotheliotropism in the central nervous system of horses, and generally does not infect neurons. However, little is known about the mechanism underlying the resistance of neuron to EHV-1, due to the lack of convenient cell culture systems. In this study, we examined EHV-1 infection in immortalized Rn33B rat neuronal cells, which differentiate into neurons when cultured under nonpermissive conditions. Because murine cell lines are resistant to EHV-1 infections due to the lack of functional entry receptors for EHV-1, we used an Rn33B-derived cell line that stably expresses the equine MHC class 1 molecule, which acts as EHV-1 entry receptor (Rn33B-A68B2M cells). EHV-1 infected undifferentiated Rn33B-A68B2M cells more efficiently than differentiated cells, resulting in the production of progeny virus in the former but not in the latter. By contrast, both differentiated and undifferentiated cells infected with herpes simplex virus-1 produced infectious viral progeny. While EHV-1 infection induced stronger expression of IFN alpha gene in differentiated cells than in undifferentiated cells, downstream IFN responses, including phosphorylation of STAT1 (signal transducer and activator of transcription 1) and expression of IFN-stimulated genes, were not activated regardless of whether cells were differentiated or not. These results suggest that neuronal differentiation of RN33B-A68B2M cells reduced their susceptibility to EHV-1, which is not due to different IFN responses. This culture system may be useful as an in vitro model for studying neuron-specific resistance to EHV-1, by investigating viral and host factors responsible for the difference in susceptibility between differentiated and undifferentiated cells.

8.
Sci Rep ; 9(1): 15151, 2019 Oct 22.
Artigo em Inglês | MEDLINE | ID: mdl-31641187

RESUMO

A hybrid vapoluminescent system exhibiting fast and repeatable response was constructed using periodic mesoporous organosilica with bipyridine moieties (BPy-PMO) and a Pt(II) complex bearing a potentially luminescent 2-phenylpyridinato (ppy) ligand. An intense red luminescence appeared when the Pt(II)-complex immobilised BPy-PMO was exposed to methanol vapour and disappeared on exposure to pyridine vapour. The ON-OFF vapochromic behaviour occurred repeatedly in a methanol/pyridine/heating cycle. Interestingly, a rapid response was achieved in the second cycle and cycles thereafter. Scanning and transmission electron microscopies (SEM/TEM), absorption and emission, and nuclear magnetic resonance spectroscopies, mass spectrometry, and powder X-ray diffraction indicated that methanol vapour induced Si-C cleavage and thus liberated [Pt(ppy)(bpy)]Cl (bpy = 2,2'-bipyridine) from the BPy-PMO framework. Furthermore, the self-assembling properties of the Pt(II) complex resulted in the formation of highly luminescent micro/nanocrystals that were homogeneously dispersed on the porous support. The unique vapoluminescence triggered by the unprecedented protodesilylation on exposure to protic solvent vapour at room temperature is attributable to BPy-PMO being a giant ligand and an effective vapour condenser. Consequently, this hybrid system presents a new strategy for developing sensors using bulk powdery materials.

9.
Res Vet Sci ; 127: 1-10, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31648115

RESUMO

Canine hemangiosarcoma (HSA) is an aggressive malignant endothelial tumor in dogs and characterized by poor prognosis because of its high invasiveness, high metastatic potential, and poor responsiveness to anti-cancer drugs. Although doxorubicin-based chemotherapy is regularly conducted after surgical treatment, its effects on survival rates are limited. Acquisition of drug resistance is one of the causes of this problem, but the underlying mechanisms remain unclear. In the present study, we aimed to identify the drug-resistance mechanism in canine HSA by establishing doxorubicin-resistant (DR) HSA cell lines. HSA cell lines were exposed to doxorubicin at gradually increasing concentrations. When the cells were able to grow in the presence of a 16-fold higher doxorubicin concentration compared with the initial culture, they were designated DR-HSA cell lines. Characterization of these DR-HSA cell lines revealed higher drug efflux pump capacity compared with the parental cell lines. Furthermore, the DR-HSA cell lines did not show activation of the DNA damage response despite carrying high DNA damage burdens, meaning that apoptosis was not strongly induced. In conclusion, canine HSA cell lines acquired doxorubicin resistance by increasing their drug efflux pump capacity and decreasing the DNA damage response. This study provides useful findings to promote further research on the drug-resistance mechanisms in canine HSA.

10.
Monoclon Antib Immunodiagn Immunother ; 38(5): 230-233, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31535919

RESUMO

Podoplanin (PDPN)/T1alpha is a type I transmembrane sialoglycoprotein, which is expressed on podocytes of the kidneys and type I alveolar cells of the lungs. PDPN is also known as Aggrus, a platelet aggregation-inducing factor, which comprises three platelet aggregation-stimulating (PLAG) domains (PLAG1, PLAG2, and PLAG3) in the N-terminus and PLAG-like domains (PLDs) in the middle of the PDPN protein. We have previously established a mouse anti-bear PDPN (bPDPN) monoclonal antibody (mAb) clone, PMab-247 using the Cell-Based Immunization and Screening (CBIS) method. PMab-247 is very useful in flow cytometry, Western blotting, and immunohistochemical (IHC) analyses; however, the binding epitope of PMab-247 has not been elucidated. In this study, we aimed to investigate the epitope of PMab-247 using enzyme-linked immunosorbent assay and IHC analyses. The results revealed that the critical epitopes of PMab-247 are Asp76, Arg78, Glu80, and Arg82 of bPDPN. The Glu80 and Arg82 are included in PLD of bPDPN. The findings of our study can be applied to the production of more functional anti-bPDPN mAbs.

11.
Neuropathology ; 39(6): 452-460, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31515858

RESUMO

Comprehensive analysis is required for the accurate diagnosis of MV2-type sporadic Creutzfeldt-Jakob disease (sCJD) because it shows a wide clinicopathological spectrum. Here, we describe the clinical findings and neuropathologic observations of an autopsy-confirmed MV2K-type sCJD case with extensive spongiform changes of the cerebral cortex. In the early disease stages, the patient exhibited gait disturbance with ataxia and gradually showed cognitive dysfunction. Diffusion-weighted magnetic resonance images revealed hyperintense regions in the cerebral cortex, basal ganglia, and particularly in the thalamus. Prion protein (PrP) gene analysis revealed no mutations, and polymorphic codon 129 exhibited methionine and valine heterozygosity. During the course of the disease, a startle reaction was observed, whereas myoclonus was not observed. Electroencephalography showed no periodic sharp wave complexes. The patient died at age 61 years with 13 months total disease duration and did not reach the akinetic mutism state. Pathologic investigation revealed extensive fine vacuole-type spongiform change in the cerebral cortex, and the appearance of vacuolation tended to be more pronounced in the deeper layers. Numerous kuru plaques were observed in the cerebellum. PrP immunostaining revealed extensive diffuse synaptic-type PrP deposition in the cerebral cortex, and the finding was prominent in the deeper layer with perineuronal-type PrP deposition. In the limbic system, basal ganglia, and thalamus, mixed small plaque-type PrP with synaptic-type PrP deposition was observed. In the cerebellar cortex, diffuse synaptic-type PrP depositions were observed with numerous strongly immunopositive plaques. Western blot analysis of examined brain samples revealed mixed type 2 PrPSc (scrapie type) and intermediate-type PrPSc .

12.
Clin Nutr ; 2019 Aug 21.
Artigo em Inglês | MEDLINE | ID: mdl-31481263

RESUMO

BACKGROUND & AIMS: The Model for End-stage Liver Diseases (MELD) is widely accepted for prioritizing candidates awaiting liver transplantation (LT). However, MELD scores do not reflect the severity of the nutritional or functional status of patients with cirrhosis. METHODS: This retrospective study analyzed data from 173 patients who were waitlisted for LT at our institution between April 2006 and December 2016. By including skeletal muscle mass, muscle quality and visceral adiposity evaluated using plain computed tomography imaging in MELD scores, we developed body composition-MELD (BC-MELD), and investigated its impact on the prediction of mortality among patients awaiting LT. RESULTS: The equation generated using Cox regression analysis was as follows: BC-MELD = MELD score + 3.59 × low SMI + 5.42 × high IMAC + 2.06 × high VSR. (IMAC, intramuscular adipose tissue content; SMI, skeletal muscle mass index; VSR, visceral-to-subcutaneous adipose tissue area ratio). The median BC-MELD score was 17.4 and the area under the receiver operating characteristic curve (AUC) revealed a cut-off BC-MELD score of 21.4 (AUC = 0.835, P < 0.001, sensitivity 87.5%, specificity 70.7%). Waitlist mortality in patients with high BC-MELD was significantly higher in all tested cohorts (P < 0.001) and among patients with lower conventional MELD scores (<15) (P < 0.001). The discriminatory power was significantly better for BC-MELD than MELD scores (AUC; 0.835 vs. 0.732, P = 0.001 for 3-month, AUC; 0.765 vs. 0.671, P = 0.002 for 6-month, AUC; 0.716 vs. 0.615, P < 0.001 for 12-month, AUC; 0.636 vs. 0.584, P = 0.014 for overall mortality). CONCLUSIONS: BC-MELD is the first to include not only muscularity but also visceral adiposity. It predicted waitlist mortality more accurately than the conventional MELD score. A new allocation system based on BC-MELD might lead to better outcomes for patients with cirrhosis awaiting LT.

13.
Int Heart J ; 60(5): 1147-1153, 2019 Sep 27.
Artigo em Inglês | MEDLINE | ID: mdl-31484872

RESUMO

Heart failure causes increased venous pressure, leading to liver dysfunction. The fibrosis-4 index is a simple index for liver fibrosis and has been reported to be useful for predicting prognosis in heart failure; however, its impact on patients with pulmonary hypertension due to left heart disease (PH-LHD) has not yet been fully elucidated.We enrolled consecutive 230 hospitalized patients who had been diagnosed as having PH-LHD. The fibrosis-4 index was calculated as follows: [aspartate transaminase (U/L) × age]/[alanine transaminase 1/2 (U/L) × platelet count (109/L) ]. We followed patients for all-cause mortality during the follow-up period (mean 1112 ± 822 days).The patients were divided into tertiles based on their fibrosis-4 index: the first tertile 0.335 to 1.381; the second tertile 1.391 to 2.311; and the third tertile 2.323 to 14.339. Compared with the first tertile, the third tertile had lower estimated glomerular filtration rates and hemoglobin levels. All-cause mortality was significantly higher in the third than in the first tertile. In a Cox proportional hazard model, the fibrosis-4 index was a predictor of all-cause mortality in PH-LHD patients (HR 1.212, 95% CI 1.099-1.337, P < 0.001).The fibrosis-4 index is associated with kidney function, anemia, and high mortality in PH-LHD patients.


Assuntos
Causas de Morte , Insuficiência Cardíaca/mortalidade , Hipertensão Pulmonar/mortalidade , Disfunção Ventricular Esquerda/mortalidade , Disfunção Ventricular Esquerda/patologia , Adulto , Idoso , Biomarcadores/sangue , Estudos de Coortes , Feminino , Fibrose/sangue , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/terapia , Hospitais Universitários , Humanos , Hipertensão Pulmonar/sangue , Hipertensão Pulmonar/patologia , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Modelos de Riscos Proporcionais , Estudos Prospectivos , Índice de Gravidade de Doença , Estatísticas não Paramétricas , Análise de Sobrevida , Disfunção Ventricular Esquerda/sangue
14.
Int Heart J ; 60(5): 1106-1112, 2019 Sep 27.
Artigo em Inglês | MEDLINE | ID: mdl-31484874

RESUMO

A useful biomarker for detecting cardiac amyloidosis (CA) has not been fully established. We aimed to investigate the utility of several biomarkers to detect CA in patients with amyloid light-chain (AL) amyloidosis.We examined the plasma levels of B-type natriuretic peptide (BNP), N-terminal fragment of the pro-brain natriuretic peptide (NT-proBNP), high-sensitivity cardiac troponin T (hs-cTnT), serum amyloid A, and the difference between kappa and lambda free light chain (dFLC) between CA patients (n = 30, 47.6%) and non-CA patients (n = 33, 52.4%). Levels of BNP were significantly higher in the CA group compared to the non-CA group (1200.0 versus 224.0 pg/mL, P = 0.001). From the ROC analysis, the sensitivity and specificity of BNP for detecting CA (with a cut-off value of 412 pg/mL) were 83% and 70%, respectively, and the area under the receiver operating curve was 0.75 (95% CI 0.61-0.90, P < 0.001) in all AL amyloidosis patients (n = 63). In contrast, other markers such as NT-proBNP, hs-cTnT, serum amyloid A, and dFLC were not useful for detecting CA in AL amyloidosis patients. Additionally, in the Cox proportional hazard analysis, BNP was a predictor of all-cause mortality (hazard ratio 3.266, 95% confidence interval 1.498-7.119, P = 0.003).BNP is a useful biomarker for detecting cardiac involvement and predicting prognosis in AL amyloidosis patients.


Assuntos
Cardiopatias/sangue , Cardiopatias/epidemiologia , Amiloidose de Cadeia Leve de Imunoglobulina/sangue , Peptídeo Natriurético Encefálico/sangue , Troponina T/sangue , Idoso , Biomarcadores/sangue , Causas de Morte , Estudos de Coortes , Progressão da Doença , Ecocardiografia Doppler/métodos , Eletrocardiografia/métodos , Feminino , Cardiopatias/diagnóstico por imagem , Hospitais Universitários , Humanos , Amiloidose de Cadeia Leve de Imunoglobulina/fisiopatologia , Japão , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Medição de Risco , Análise de Sobrevida
15.
Int Heart J ; 60(5): 1098-1105, 2019 Sep 27.
Artigo em Inglês | MEDLINE | ID: mdl-31484875

RESUMO

The restless legs syndrome (RLS) is a neurological disorder characterized by an irresistible urge to move the legs or arms for relief of uncomfortable or unpleasant sensations. Prevalence and prognostic impact of RLS on patients with heart failure (HF) remain unclear. We aimed to investigate the clinical characteristics and prognostic impact of RLS on HF patients.Consecutive 338 HF patients were evaluated for RLS and divided into two groups on the basis of presence of RLS: HF patients with RLS (RLS group, n = 29) and HF patients without RLS (non-RLS group, n = 309). We compared clinical characteristics, parameters of laboratory data and echocardiography, and rate of follow-up cardiac events including worsening HF and cardiac death between the two groups. Compared with the non-RLS group, the RLS group had higher prevalence of anemia (65.5% versus 40.8%, P = 0.010), higher usage of inotropic agents (31.0% versus 15.2%, P = 0.028), higher levels of B-type natriuretic peptide (570.8 versus 215.8 pg/mL, P = 0.018), and lower levels of left ventricular ejection fraction (40.4% versus 48.4%, P = 0.019). By contrast, age, gender, prevalence of other co-morbidities and medications were comparable between the groups. In the Kaplan-Meier analysis, the cardiac event rate was significantly higher in the RLS group than in the non-RLS group (log-rank P = 0.034). In the Cox proportional hazard analysis, RLS was a predictor for cardiac events in HF patients (hazard ratio: 1.783, 95% confidence interval: 1.038-3.063).RLS is associated with adverse prognosis in HF patients.


Assuntos
Causas de Morte , Progressão da Doença , Insuficiência Cardíaca/epidemiologia , Síndrome das Pernas Inquietas/epidemiologia , Estudos de Coortes , Comorbidade , Feminino , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/terapia , Hospitais Universitários , Humanos , Japão , Estimativa de Kaplan-Meier , Modelos Logísticos , Masculino , Análise Multivariada , Prevalência , Prognóstico , Modelos de Riscos Proporcionais , Estudos Prospectivos , Síndrome das Pernas Inquietas/diagnóstico , Síndrome das Pernas Inquietas/terapia , Medição de Risco , Índice de Gravidade de Doença , Estatísticas não Paramétricas , Análise de Sobrevida
16.
J Vet Med Sci ; 81(9): 1389-1399, 2019 Oct 10.
Artigo em Inglês | MEDLINE | ID: mdl-31406033

RESUMO

The transgenerational maintenance of symbiotic microbes that benefit host nutrition and health is evolutionarily advantageous. In some vertebrate lineages, coprophagy is used as a strategy for effectively transmitting microbes across generations. However, this strategy has still not been studied in birds. Accordingly, the aim of the present study was to evaluate the role of maternal cecal feces consumption by Japanese rock ptarmigan (Lagopus muta japonica) chicks as a strategy for acquiring essential gut microbes. Both the duration of coprophagy behavior by the chicks and the development process of the chick cecal microbiome (n=20 one- to three-week-old chicks, from three broods) were investigated. In all three broods, coprophagy behavior was only observed from 3 to 18 days of age. Furthermore, there was no significant difference in the number of bacterial operational taxonomic units (OTUs) in 1-week-old chicks (n=651) and adults (n=609), and most of the main OTUs observed in the adults were already present in the 1-week-old chicks. These results indicate that, in this precocial bird species, coprophagy may contribute to the early establishment of cecal bacteria that are essential for food digestion and, thus, chick survival. In fact, Japanese rock ptarmigan chicks consume the same food as their hens from the time of hatching. This behavior may have applications to ex-situ conservation.


Assuntos
Coprofagia , Microbioma Gastrointestinal , Codorniz/microbiologia , Animais , Animais Recém-Nascidos , Bactérias/classificação , Bactérias/isolamento & purificação , Ceco/microbiologia , Fezes/microbiologia , Feminino , Japão , Codorniz/fisiologia , RNA Ribossômico 16S/análise
17.
Immunol Med ; 42(2): 94-98, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31469613

RESUMO

Giant cell arteritis (GCA) is a type of large vessel vasculitis, and it involves the aorta, large vessels and terminal branches of the external carotid artery, especially the temporal artery. Temporal artery biopsy is a simple tool for the diagnosis of vasculitis, however, the histopathological findings do not always differentiate between the small-vessel vasculitis and GCA. We report the case of 72-year-old male who initially had a clinical diagnosis of GCA, then in the course of treatment, diagnostic histopathological approach revealed the necrotizing vasculitis with bronchocentric granulomatosis in the inflammatory nodule of the lung. The manifestations of patients with systemic vasculitis represent the disorders of multiple organ systems thus are diverse and may vary through the course of the disease. Presentation of unexpected features such as insufficient response to antibiotics, sinusitis, runny nose, discomfort of frontal region or pachymeningitis which anticipates re-evaluation of systemic vasculitis that may lead us to an appropriate diagnosis and the treatment.

18.
J Immunol ; 203(5): 1313-1324, 2019 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-31366713

RESUMO

Bovine leukemia virus (BLV) infection is a chronic viral infection of cattle and endemic in many countries, including Japan. Our previous study demonstrated that PGE2, a product of cyclooxygenase (COX) 2, suppresses Th1 responses in cattle and contributes to the progression of Johne disease, a chronic bacterial infection in cattle. However, little information is available on the association of PGE2 with chronic viral infection. Thus, we analyzed the changes in plasma PGE2 concentration during BLV infection and its effects on proviral load, viral gene transcription, Th1 responses, and disease progression. Both COX2 expression by PBMCs and plasma PGE2 concentration were higher in the infected cattle compared with uninfected cattle, and plasma PGE2 concentration was positively correlated with the proviral load. BLV Ag exposure also directly enhanced PGE2 production by PBMCs. Transcription of BLV genes was activated via PGE2 receptors EP2 and EP4, further suggesting that PGE2 contributes to disease progression. In contrast, inhibition of PGE2 production using a COX-2 inhibitor activated BLV-specific Th1 responses in vitro, as evidenced by enhanced T cell proliferation and Th1 cytokine production, and reduced BLV proviral load in vivo. Combined treatment with the COX-2 inhibitor meloxicam and anti-programmed death-ligand 1 Ab significantly reduced the BLV proviral load, suggesting a potential as a novel control method against BLV infection. Further studies using a larger number of animals are required to support the efficacy of this treatment for clinical application.

19.
Monoclon Antib Immunodiagn Immunother ; 38(4): 171-174, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31313968

RESUMO

Podoplanin (PDPN) is utilized as a specific marker of type I alveolar cells of lung and lymphatic endothelial cells of every tissue. Therefore, sensitive and specific monoclonal antibodies detecting PDPN are necessary for immunohistochemical analyses, especially using formalin-fixed paraffin-embedded tissues. Recently, we developed an anti-bear PDPN (bPDPN) mAb, PMab-247, which is useful for Western blot, flow cytometry, and immunohistochemical analyses. In this study, immunohistochemical analyses showed that PMab-247 strongly detected bPDPN, which is expressed in type I alveolar cells and lymphatic endothelial cells of bear lung and podocytes of bear kidney. These findings suggest that PMab-247 could be useful for pathophysiological analyses using immunohistochemistry.


Assuntos
Células Epiteliais Alveolares/metabolismo , Anticorpos Monoclonais/imunologia , Células Endoteliais/metabolismo , Rim/metabolismo , Pulmão/metabolismo , Glicoproteínas de Membrana/imunologia , Células Epiteliais Alveolares/imunologia , Animais , Células Endoteliais/imunologia , Imuno-Histoquímica/métodos , Rim/imunologia , Pulmão/imunologia , Ursidae
20.
Monoclon Antib Immunodiagn Immunother ; 38(3): 104-107, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31161964

RESUMO

Podoplanin (PDPN)/T1 alpha is known as a specific marker of lymphatic endothelial cells and type I alveolar cells. Sensitive and specific monoclonal antibodies (mAbs) for PDPN are needed for immunohistochemical analyses. Recently, we developed an anticetacean PDPN mAb, PMab-237. Herein, immunohistochemical analyses showed that PMab-237 strongly detected pulmonary type I alveolar cells, renal podocytes, and lymphatic endothelial cells of the harbor porpoise. These findings suggest that PMab-237 may be useful for immunohistochemical analyses for cetacean tissues.


Assuntos
Células Epiteliais Alveolares/metabolismo , Anticorpos Monoclonais/imunologia , Células Endoteliais/metabolismo , Epitopos/imunologia , Glicoproteínas de Membrana/imunologia , Phocoena/metabolismo , Podócitos/metabolismo , Células Epiteliais Alveolares/imunologia , Animais , Especificidade de Anticorpos/imunologia , Células Endoteliais/imunologia , Humanos , Imuno-Histoquímica , Phocoena/imunologia , Podócitos/imunologia
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