Aerosp Med Hum Perform
January 2024
Gravity-induced loss of consciousness (G-LOC) is a major threat to fighter pilots and may result in fatal accidents. The brain has a period of 5-6 s from the onset of high +G exposure, called the functional buffer period, during which transient ischemia is tolerated without loss of consciousness. We tried to establish a method for predicting G-LOC within the functional buffer period by using machine learning.
View Article and Find Full Text PDFJ Mech Behav Biomed Mater
June 2020
Metals and alloys are used widely in bone prosthetic materials, stents and dental tissue reconstructions. The most common materials are stainless steels and cobalt-chromium-nickel and titanium alloys. These alloys can be easily deformed but are hard to break.
View Article and Find Full Text PDFObjectives: Anticentromere antibody (ACA) is generally considered to be a serological marker for systemic sclerosis (SSc). ACA-positive patients with primary Sjögren's syndrome (pSS) have also been reported. ACA often recognizes centromere proteins (CENPs): CENP-A, CENP-B, and CENP-C, and sometimes reacts to heterochromatin protein 1 (HP1)α.
View Article and Find Full Text PDFThis report presents the case of a patient demonstrating multicentric Castleman's disease (MCD) with a lung lesion that was successfully treated with an anti-interleukin-6 receptor antibody, tocilizumab in combination with corticosteroid and tacrolimus. A 43-yr-old female with abnormal shadows on a chest X-ray was referred to the hospital for further examination. She was diagnosed as having MCD based on the characteristic pathology of inguinal lymph node, lung lesions, laboratory data, and undifferentiated arthritis.
View Article and Find Full Text PDFThe objective of this work was to clarify the clinical significance of titers of anti-Ro and anti-La, the relationships between titers of either anti-Ro or anti-La, and salivary production rate (SPR). These autoantibodies were titrated using enzyme-linked immunosorbent assay. The Saxon test was performed to measure SPR.
View Article and Find Full Text PDFObjective: The aim of this study was to reveal whether or not the presence of anti-U1RNP antibodies is associated with a low amount of salivary secretion (ASS).
Subjects And Methods: Twenty females (mean age 49+/-12 years) who had anti-U1RNP but not ACA, anti-Ro, or anti-La antibodies (anti-U1RNP-positive group), and 65 control females (mean age 50+/-12 years) were included in this study. The saxon test was performed to measure the ASS.
The aim of this study is to clarify the time course of primary biliary cirrhosis (PBC) in subjects possessing anticentromere antibodies (ACA), anti-Ro, and/or anti-La antibodies, and who used alkaline phosphatase (ALP) as a serological marker for PBC. Female subjects (n = 165), who had at least one of ACA, anti-Ro, and/or anti-La, were enrolled in this study. Groups A (ACA alone, n = 44), B (anti-Ro alone, n = 54), E (anti-Ro and anti-La, n = 52), and DFG (ACA with anti-Ro and/or anti-La, n = 14) were analyzed.
View Article and Find Full Text PDFThe availability of intravenous cyclophosphamide (CYC) pulse therapy for collagen vascular diseases (CVD)-associated interstitial lung disease (ILD) has been indicated. However, the standard protocol concerning the dosage and the interval of CYC infusion has not yet been established. The aim of this study is to elucidate the efficacy and the safety of our "divided administration" protocol of CYC for the treatment of CVD-ILD.
View Article and Find Full Text PDFInfluences of matrix elements and high viscosity in three kind of simulated body fluids (SBFs) on determination of trace metallic elements (Co, Cr, Ni, Al and V) by inductively coupled plasma atomic emission spectrometry (ICP-AES) were investigated. In addition, decreases of these effects were attempted by H(2)SO(4) fume treatment. Calibration lines of the elements were constructed by the standard solutions made of elemental solutions and HCl or the SBFs.
View Article and Find Full Text PDFA 51-year-old woman who had been suffering from mixed connective tissue disease (MCTD) for 8 years developed an erythematous rash with pain and tenderness on her left leg. A skin biopsy revealed septal panniculitis with multiple lymphangiectasis. No vasculitis was observed.
View Article and Find Full Text PDFPolyarteritis nodosa (PN) occasionally develops in association with malignant disorders. A 71-year-old man suddenly suffered from bleeding due to the rupture of a hepatic artery aneurysm. The ruptured lesion was embolized endovascularly by coiling, and the bleeding was stopped.
View Article and Find Full Text PDFIntroduction: Thrombin, a serine protease, plays an important role in such actions as coagulation, cell proliferation and inflammation. It has been sporadically reported that endothelial cells, when stimulated by thrombin via protease-activated receptors (PAR), express various mediators and proteins including cytokines, chemokines, growth factors, and adhesion molecules. However, the pleiotropic effect of thrombin on endothelial cells has not yet been fully elucidated.
View Article and Find Full Text PDFThe aim of this study is to clarify the effects of cevimeline on various components in human saliva, such as immunoglobulin A (IgA), lysozyme, alpha-amylase and squamous cell carcinoma (SCC) antigen. Twelve female patients with Sjögren syndrome (SS) and 14 healthy women were enrolled. After the first saliva collection, one capsule (30 mg) of cevimeline was administered to each subject.
View Article and Find Full Text PDFA 41-year-old woman was admitted to our hospital because of fever and polyarthralgia. A diagnosis of systemic lupus erythematosus (SLE) was made based on the findings of polyarthritis, leukocytopenia, lymphocytopenia, proteinuria, and positive reactions for antinuclear antibody (ANA) and anti-double strand (ds)DNA antibody. She had also been suffering from a pulmonary Mycobacterium avium complex (MAC) infection with such symptoms as cough and sputum for the past 3 years.
View Article and Find Full Text PDFAbstract A 50-year-old woman, who had been diagnosed as having rheumatoid arthritis (RA) 7 months earlier, was admitted to our hospital because of liver dysfunction. Her laboratory data and histological findings satisfied the criteria for autoimmune hepatitis (AIH) as revised by the International AIH Group. Laboratory examinations (indirect immunofluorescence and immunoblotting analyses) revealed that anti-Golgi complex antibodies (AGA) were positive in her serum.
View Article and Find Full Text PDFA rare case of polyarteritis associated with a solid tumor is presented. A 66-year-old man was referred to our hospital, because of gangrene in the bilateral fingers and toes, right pleural effusion, and an abnormal sensation in the throat. A diagnosis of polyarteritis was made based on pleuritis, digital gangrene and the arteriography findings.
View Article and Find Full Text PDFThrombin plays a critical role in haemostasis, inflammation, and cell proliferation, mediated by proteinase-activated receptor 1 (PAR-1; thrombin receptor). The physiological and pathological regulation of PAR-1 by inflammatory mediators has not yet been fully elucidated. The aim of this study is to investigate the effects of inflammatory mediators on mRNA and protein expression of PAR-1 in early passage human vascular endothelial cells.
View Article and Find Full Text PDFAn 84-year-old woman was referred to our hospital because of aches and pain in her left hand and foot. Three months before her symptoms occurred, a pacemaker had been implanted for the treatment of a 2:1 atrioventricular block with bradycardia. In an X-ray examination, prominently decreased bone density was noted in her left fingers and toes.
View Article and Find Full Text PDFThe aim of this study was to clarify the effects of anti-dsDNA antibodies on the titer and the nuclear staining pattern(s) in a fluorescent antinuclear antibody (FANA) assay using HEp-2 cells. Anti-dsDNA derived from 14 patients with systemic lupus erythematosus (SLE) was individually affinity-purified. The anti-dsDNA titer of the purified anti-dsDNA solution was measured by radioimmunoassay (RIA) or by enzyme-linked immunosorbent assay (ELISA).
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