Publications by authors named "Daisuke Wakasugi"

Background & Aim: SGLT2 inhibitors (SGLT2i) improve hepatic steatosis in patients with type 2 diabetes mellitus (T2DM) and MASLD. We aimed to investigate the impact of SGLT2i on the incidence of liver-related events and extrahepatic cancer compared to DPP4 inhibitors (DPP4i) in patients with T2DM and suspected MASLD using a medical claims database in Japan.

Methods: We conducted a retrospective study using a Japanese medical claims database.

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Hypertension induces vascular damage followed by organ damage, including heart failure in hypertensive heart disease (HHD) and nephrosclerosis (the resultant renal pathologic change from long-standing hypertension affecting renal vascular supply), ultimately causing renal failure. Renin-angiotensin-aldosterone system (RAAS) inhibitors are well known as effective drugs for the treatment of hypertension and the anti-remodeling of affected organs. A 52-year-old male was evaluated.

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Heparanase-1 (HPSE1) is an endo-β-d-glucuronidase that is the only mammalian enzyme known to cleave heparan sulfate (HS) of heparan sulfate proteoglycans (HSPG), a key component of the glycocalyx layer of the vascular endothelium matrix. Inhibition of HPSE1 has therapeutic potential for cancer and proteinuric kidney diseases. We previously reported that 2 showed a moderate potency as an HPSE1 inhibitor and an issue of selectivity against exo-β-d-glucuronidase (GUSβ) and glucocerebrosidase (GBA) remained.

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A 17-year-old woman was referred to our department with fever, general malaise, and weight loss. She was diagnosed with Takayasu arteritis (TAK) and Crohn's disease (CD) following positron emission tomography-computed tomography (PET-CT) and colonoscopy, respectively. Serological human leukocyte antigen (HLA) typing revealed HLA-B52 positivity.

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Heparanase-1 (HPSE1) is an endo-β-d-glucuronidase that cleaves heparan sulfate proteoglycans into short-chain heparan sulfates (HS). The inhibition of HPSE1 has therapeutic potential for proteinuric diseases such as nephrotic syndrome because increased HPSE1 expression is associated with the loss of HS in the glomerular basement membrane, leading to the development of proteinuria. The present study examined the generation of a lead compound focusing on chemical structures with a sugar moiety, such as glycosides and sugar analogs, taking their physical properties into consideration.

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A 70-year-old woman was hospitalised due to jaundice and fever. She was diagnosed with rheumatoid arthritis (RA) at 54 years of age. Treatment with methotrexate (MTX) was successful, and her RA was in remission.

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Article Synopsis
  • A 65-year-old male with nephrotic syndrome was hospitalized due to severe edema and skin issues, revealing impaired kidney function and cryoglobulinemia.
  • He received treatment that included corticosteroids and immunosuppressants, but initially struggled with steroid resistance, necessitating cryofiltration.
  • After treatment adjustments, the patient achieved complete remission and maintained it without symptoms for three years.
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Recent findings have indicated a close relationship between myeloperoxidase antineutrophil cytoplasmic antibody (MPO-ANCA)-positive hypertrophic pachymeningitis and the limited form of granulomatosis with polyangiitis (GPA). In Japan, MPO-ANCA-positive hypertrophic pachymeningitis predominantly occurs in elderly individuals. We herein describe the cases of two patients with MPO-ANCA-positive hypertrophic pachymeningitis associated with the limited form of GPA who were successfully treated with a combination of corticosteroids and methotrexate.

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Background: We attempted to clarify whether the presence of anti-aminoacyl-transfer RNA synthetase antibody (anti-ARS Ab) or anti-melanoma differentiation-associated gene 5 antibody (anti-MDA5 Ab) is associated with the therapeutic response of polymyositis/dermatomyositis-associated interstitial lung disease (PM/DM-ILD).

Methods: We retrospectively investigated 22 patients with PM/DM-ILD (10 positive for anti-ARS Ab and nine positive for anti-MDA5 Ab) for whom antibody analysis of conserved serum was possible. We assessed mortality in the first three months as the therapeutic response in the acute phase and compared changes in clinical data for up to one year considered as the chronic phase.

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A 62-year-old man presented with heliotrope rash, Gottron's sign, and mild muscle weakness. Both of his lung fields showed interstitial changes that worsened rapidly. He was diagnosed with clinical amyopathic dermatomyositis with rapidly progressive interstitial lung disease.

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The patient was a 48-year-old man hospitalized for jaundice and anemia after a 6-day history of diarrhea. Examination demonstrated hemolytic anemia, renal dysfunction, and thrombocytopenia. Typical hemolytic uremic syndrome (HUS) was suspected based on the preceding colitis; however, plasma exchange (PE) was performed because the possibility of atypical HUS (aHUS) could not be ignored, given that the patient was an adult male.

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Synthesis and structure-activity relationship of a novel series of isoquinoline CRTH2 antagonists bearing a methylene linker between the isoquinoline and benzamide moieties were described. Optimization focusing on the substituents of the benzamide portion in the right hand part of the molecule led to the identification of TASP0412098 (9l), which is a potent, selective CRTH2 antagonist (binding affinity: IC50=2.1 nM, functional activity: IC50=12 nM).

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In this study, we describe the synthesis and structure-activity relationship (SAR) of a series of isoquinoline chemoattractant receptor-homologous molecule expressed on Th2 cells (CRTH2) antagonists. TASP0376377 (15-20), one of the most potent compounds, showed a potent binding affinity (IC50=19 nM) in addition to the excellent functional antagonist activity (IC50=13 nM). Moreover, the efficacy of this compound in a chemotaxis assay (IC50=23 nM) was in good agreement with its potency as a CRTH2 antagonist.

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Synthesis and structure-activity relationship of a novel series of isoquinoline CRTH2 receptor antagonists are described. One of the most potent compounds, TASP0376377 (6m), showed not only potent binding affinity (IC(50)=19 nM) but also excellent functional antagonist activity (IC(50)=13 nM). TASP0376377 was tested for its ability of a chemotaxis assay to show the effectiveness (IC(50)=23 nM), which was in good agreement with the CRTH2 antagonist potency.

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Objective: To determine the frequency of International Society of Nephrology/Renal Pathology Society (ISN/RPS) class III or IV lupus nephritis in patients with systemic lupus erythematosus (SLE) without clinical renal involvement.

Methods: We investigated the renal pathology of 195 patients with SLE, including 86 patients without clinical renal involvement.

Results: Lupus nephritis other than class I was found in 58% of the patients without clinical renal involvement, and class III and IV nephritis was found in 15% of these patients.

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Novel (4-piperidinyl)-piperazine derivatives were synthesized and evaluated as ACC1/2 non-selective inhibitors. Optimization of the substituents on the nitrogen of the piperidine ring led to the identification of the fluorine substituted tert-butoxycarbonyl group. Advanced analog, 1,1,1-trifluoro-2-methylpropan-2-yl 4-{4-[(2-amino-6-methyl-1-benzothiophen-3-yl)carbonyl]piperazin-1-yl}piperidine-1-carboxylate (12c) showed potent inhibitory activities in enzyme-assay and cell-based assays.

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Acetyl-CoA carboxylases (ACCs), the rate limiting enzymes in de novo lipid synthesis, play important roles in modulating energy metabolism. The inhibition of ACC has demonstrated promising therapeutic potential for treating obesity and type 2 diabetes mellitus in transgenic mice and preclinical animal models. We describe herein the structure-based design and synthesis of a novel series of disubstituted (4-piperidinyl)-piperazine derivatives as ACC inhibitors.

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Acetyl-CoA carboxylases (ACCs), the rate limiting enzymes in de novo lipid synthesis, play important roles in modulating energy metabolism. The inhibition of ACC has demonstrated promising therapeutic potential for treating obesity and type 2 diabetes mellitus in transgenic mice and preclinical animal models. We describe herein the synthesis and structure-activity relationships of a series of disubstituted (4-piperidinyl)-piperazine derivatives as a new platform for ACC1/2 non-selective inhibitors.

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Neurological involvement occurs in approximately 20% of patients with primary Sjögren's syndrome. Although neurological symptoms can affect the peripheral nervous system and the central nervous system, the most frequent symptom is polyneuropathy. Small fiber neuropathy (SFN) is a form of painful peripheral polyneuropathy that is common in patients with diabetic neuropathy, but may also occur in toxic, infectious, or immune-mediated neuropathy.

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Sympathetic storms (SyS) are characterized by hyperactivity of autonomic functions, resulting in episodes of hyperthermia, hypertension, tachycardia, and hyperhidrosis. We show here a patient with neuro-Behçet's disease (NBD) complicated by SyS. Although SyS is well known to occur with brain tumors, trauma, and hydrocephalus, this is the first report to show that SyS is a manifestation of central nervous system involvement in a patient with NBD.

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We report a case of IgA nephropathy with tuberculous pleurisy that was treated with steroid pulse therapy combined with tonsillectomy. A 27-year-old female was referred to our hospital because of hematuria and proteinuria. Her urinalysis showed mild proteinuria (0.

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