Publications by authors named "Akira Take"

Article Synopsis
  • - The study investigates how the expression of Mac-2 binding protein (M2BP) in the liver relates to fat accumulation and changes in the liver environment in patients with metabolic dysfunction associated steatotic liver disease (MASLD).
  • - Liver samples from 46 MASLD patients were analyzed for M2BP expression using immunohistochemical staining, revealing a higher M2BP staining grade in sinusoidal cells compared to hepatocytes, and a correlation between hepatocyte staining and liver inflammation.
  • - Results indicate that fat accumulation triggers M2BP expression linked to liver inflammation in hepatocytes and fibrosis in sinusoidal cells, suggesting a complex role of M2BP in MASLD pathology.
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Article Synopsis
  • A 67-year-old Japanese woman with liver cirrhosis from primary biliary cholangitis was admitted to the hospital after losing consciousness.
  • She was diagnosed with hepatic encephalopathy (HE) through imaging and symptoms assessment.
  • Molecular tests showed a link between urease-positive S. salivarius found in her saliva and stool, suggesting it may contribute to increased ammonia production and subsequent HE in cirrhosis patients.
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Introduction: Limited data are available on the correlation between microbial communities and metabolic dysfunction-associated fatty liver disease (MAFLD). This study aimed to evaluate the influence of MAFLD on diverse microbial communities.

Methods: We recruited 43 patients with a nonviral liver disease.

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Objective: To investigate the association between body composition and prognosis in patients with advanced hepatocellular carcinoma treated with atezolizumab plus bevacizumab.

Methods: This cohort study analysed 119 patients who received atezolizumab plus bevacizumab for unresectable hepatocellular carcinoma. We investigated the association between body composition and progression-free survival and overall survival.

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Aim: We performed genomic analysis to study the relative abundance of a urease-positive Streptococcus salivarius group isolated from the saliva of patients with chronic liver disease.

Methods: Male and female patients with chronic liver disease aged over 20 years were included. First, we assessed the frequency and type of the S.

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An actinomycete strain K14-0274 was isolated from the root of Blume subsp. (H. Hara) H.

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A novel actinomycete, designated strain OK19-0408, was isolated from soil collected on Iheya island, Okinawa prefecture, Japan. Using the polyphasic taxonomic approach, comparing 16S rRNA gene sequences, the new isolate was found to be most closely related to JCM12675 (98.71 %).

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Streptomyces avermitilis is a gram-positive bacterium that undergoes complex physiological and morphological differentiation during its life cycle, which has implications in secondary metabolite production. Avermectin, produced by S. avermitilis, is widely used as an anthelmintic and insecticidal agent.

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Background: Streptococcus canis causes deep pyoderma in canines, which raises concerns about the risk of isolates from lesions acquiring an antibiotic-resistant phenotype. It is necessary to identify effective antibiotics and the characteristics of the pathogenic cluster for S. canis-associated deep pyoderma.

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Background: Lenvatinib is appropriate for reducing the production of nitric oxide (NO) and facilitating as block angiogenesis. However, to our knowledge, there are no data that support the correlation between NO and clinical response in patients who received lenvatinib therapy for HCC. Therefore, we investigated the correlation between the change rate of NO levels and clinical responses including adverse events (AEs) after lenvatinib therapy for unresectable hepatocellular carcinoma (HCC).

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Objective: We aimed to evaluate the difference between computed tomography (CT)-based and bioelectrical impedance analysis (BIA)-based assessment of sarcopenia in patients with chronic liver disease (CLD).

Methods: We enrolled a total of 257 patients who were evaluated with or without sarcopenia. Sarcopenia was defined as a low skeletal muscle mass index (SMI) with low muscular strength by the Japan Society of Hepatology.

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Recurrent Clostridioides difficile infection (rCDI) is a frustrating condition that may affect a person's quality of life for months. Microbiome-based therapy such as fecal microbiota transplantation (FMT) has been effective for the treatment of rCDI by correcting the imbalance of the gut microbiota. Appropriate antibiotic treatment is recommended for at least two recurrences before offering FMT.

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Article Synopsis
  • Raman microspectroscopy is a technique that identifies molecules without the need for labeling, allowing for minimally invasive analysis.
  • The study successfully detected penicillin G within KF425 fungal cells using advanced analysis methods to separate overlapping spectral signatures of various molecular components.
  • This approach not only maps the presence of proteins and lipids but also pinpoints where penicillin G is located within the cells, suggesting its use for screening bioactive compounds in microorganisms.
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Clostridium argentinense produces botulinum neurotoxin type G (BoNT/G). We sequenced and analyzed the plasmid harboring the bont/G gene, designated pCAG, in C. argentinense strain 2740.

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Article Synopsis
  • Strain KJ-029 is a newly discovered marine actinomycete isolated from sediment in Kagoshima, Japan, showing 99.3% genetic similarity to LHW 63014 based on 16S rRNA sequencing.
  • Phylogenetic analysis indicates that KJ-029 clusters with LHW 63014 and another strain but has a low DNA-DNA relatedness (24.8-32.9%).
  • This novel strain features unique characteristics in its cell wall composition and fatty acid profiles, leading to its classification as a new species within its genus, proposed as sp. nov., with KJ-029 being the type strain.
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  • Strain GKU 173, an endophytic actinomycete isolated from Willd. roots, shows potential for promoting plant growth and is closely related to HKI 0501 based on phylogenetic analysis.
  • The strain is classified into a novel species due to its unique morphological and biochemical characteristics, including specific cell wall components and fatty acid profiles.
  • Genome analysis reveals a high DNA G+C content and suggests that this and similar strains could be valuable sources for beneficial plant growth-promoting compounds and novel secondary metabolites.
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Kozupeptins A and B, novel antimalarial lipopeptides, were isolated from the culture broths of Paracamarosporium sp. FKI-7019. They exhibited potent antimalarial activity against chloroquine-sensitive and -resistant Plasmodium falciparum strains in vitro.

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  • A new actinomycete strain called H219 was discovered from soil under an Elephant ear plant in Bangkok, Thailand, and was extensively characterized using various methods.
  • Phylogenetic analysis revealed that strain H219 is closely related to other species in the genus Saccharopolyspora but shows significant differences in DNA-DNA hybridization, indicating it's a distinct species.
  • Based on its unique characteristics, strain H219 has been proposed as a new species named Saccharopolysporarhizosphaerae, with specific details like type strain identification included.
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Two new nanaomycin analogs, nanaomycin I and J, were isolated from a cultured broth of an actinomycete strain, "Streptomyces rosa subsp. notoensis" OS-3966. In our previous study, we have confirmed the occurrence of nanaomycin I (m/z = 482 [M + H]) that lacks a pseudo-disaccharide from the mycothiol of nanaomycin H under same culture condition.

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Two new compounds, designated as hamuramicins A (1) and B (2), were isolated from the cultured broth of an endophytic actinomycete Allostreptomyces sp. K12-0794 by silica gel column chromatography and HPLC. The structures of 1 and 2 were elucidated as 22-membered macrolide containing triene and trienone with an alkyl side chain by spectroscopic analyses including NMR experiments.

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Actinoallolides are anti-trypanosomal macrolides isolated from the secondary metabolites of two endophytic actinomycete strains, Actinoallomurus fulvus MK10-036 and K09-0307. A putative actinoallolide biosynthetic gene cluster was predicted from the genome sequence of the strain K09-0307. The gene cluster spans a contiguous 53 kb DNA region that comprises seven genes encoding three PKSs (aalA1, aalA2, and aalA3), cytochrome P450 (aalB), acyl-CoA dehydrogenase (aalC), crotonyl-CoA reductase (aalD), and TetR family regulator (aalR).

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Actinomycete strain K11-0400 was isolated from a soil sample collected in the Ogasawara Islands (also known as the Bonin Islands), Tokyo, Japan. Mature spore chains of strain K11-0400 had more than 20 spores per chain. The strain contained ll-diaminopimelic acid as the diamino acid in whole-cell hydrolysates, and MK-9(H6) and MK-9(H4) were the predominant menaquinones.

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A novel actinomycete strain, designated GKU 128, isolated from the roots of an Indian oak tree [Barringtonia acutangula (L.) Gaertn.] at Khao Khitchakut district, Chantaburi province, Thailand, was characterized by using a polyphasic approach.

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A non-Streptomyces actinomycete, designated as strain S265, was isolated from rhizosphere collected under an elephant ear plant (Colocasia esculenta) in Bangkok, Thailand. The taxonomic position of this strain was determined by a polyphasic approach. Strain S265 formed single globose spores on long, branching, aerial hyphae.

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