Publications by authors named "Kiyoshi Asada"

Background: Post-stroke epilepsy can reduce patients' abilities to carry out various activities of daily living. Despite their importance in preventing the onset of post-stroke epilepsy, the prophylactic administration of antiepileptic drugs is controversial due to a lack of high-level clinical research. In this study, we initiated a prospective interventional study of prophylactic antiepileptic drug administration in patients with a subcortical hemorrhage, who are at the highest risk of developing epilepsy after experiencing a stroke.

View Article and Find Full Text PDF

Objective: A novel external oblique intercostal block (EOIB) might have analgesic effects on T6-10 and be indicated for laparoscopic gastrectomy. However, EOIB effects on postoperative pain are unknown. We aim to generate evidence to support such EOIB application.

View Article and Find Full Text PDF
Article Synopsis
  • Portal vein thrombosis (PVT) is a serious condition often found in patients with liver cirrhosis, linked to high mortality rates, and is influenced by enzyme and factor imbalances causing increased blood clotting.
  • A study involving 345 liver cirrhosis patients identified two groups: 40 with PVT and 305 without, noticing that 81% were excluded due to various health issues.
  • The findings showed that lower plasma levels of ADAMTS-13 activity indicate a higher risk for developing PVT, making it a potential diagnostic and prognostic biomarker, especially in Japanese patients.
View Article and Find Full Text PDF

Background: Uterine leiomyomas are common for reproductive-aged women and affect women's quality of life due to heavy menstrual bleeding or dysmenorrhea. Leiomyomas grow according to estradiol exposure and decrease after post-menopause. In case serious symptoms are caused by leiomyomas, pharmacotherapy or surgical treatment is proposed.

View Article and Find Full Text PDF
Article Synopsis
  • This study investigates the impact of a low-frequency treatment device, IVES+, on patients experiencing incomplete paralysis due to cerebrovascular disorders to possibly reduce synkinesis and improve recovery.
  • Participants include adults aged 20 or older with specific levels of upper limb paralysis, who will undergo a 4-week rehabilitation treatment, with various assessments to measure progress.
  • The primary focus is on improving upper-limb function, with a keen interest in measuring changes in related physical assessments at different intervals during the treatment period.
View Article and Find Full Text PDF

Introduction: Globally, the number of patients with primary biliary cholangitis (PBC) is increasing. Growing evidence suggests that oxidative stress plays a significant role in the pathogenesis of chronic liver disease regardless of its etiology. Hesperidin, a natural antioxidative substance derived from citrus peel, has been shown to have an anti-inflammatory effect in a rat arthritis model and may be a potential substance to attenuate intrahepatic inflammation in patients with PBC.

View Article and Find Full Text PDF
Article Synopsis
  • Patients with cirrhosis often suffer from sarcopenia, which can increase mortality rates, and this study investigates the impact of subclinical zinc deficiency on this condition.
  • The research involved 151 cirrhosis patients, categorizing them into two groups: those with normal zinc levels and those with subclinical zinc deficiency, revealing a higher prevalence of sarcopenia in the latter.
  • Results indicated a significant correlation between low zinc levels and increased sarcopenia risk, suggesting that maintaining adequate zinc levels could be important for improving patient outcomes.
View Article and Find Full Text PDF

Objective: Nonalcoholic steatohepatitis (NASH) is difficult to diagnose in patients with no symptoms. We aimed to investigate the combined effect of farnesoid X receptor (FXR) agonist, obeticholic acid (OCA), and angiotensin II type 1 receptor blocker (ARB: losartan) on an ongoing hepatic fibrosis in a NASH rat model.

Methods: Fischer 344 rats were fed with choline-deficient L-amino-acid-defined (CDAA) diet for 16 weeks.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the effects of tamibarotene and its combination with 5-aza-2'-deoxycytidine (5-aza-dC) on neuroblastoma (NBL), focusing on their potential for improving prognosis and treatment outcomes.
  • In vitro and in vivo experiments show that tamibarotene promotes differentiation in NBL cells and leads to tumor regression, while 5-aza-dC effectively suppresses tumor growth and induces gene demethylation.
  • The findings suggest that using 5-aza-dC in conjunction with tamibarotene may enhance treatment for refractory NBLs and offer a new direction for differentiation therapy.
View Article and Find Full Text PDF

An orally bioavailable small molecule inhibitor of plasminogen activator inhibitor‑1 (PAI‑1) is currently being clinically assessed as a novel antithrombotic agent. Although PAI‑1 is known to serve a key role in the pathogenesis of metabolic syndrome (MetS) including nonalcoholic steatohepatitis (NASH), the pharmacological action of an oral PAI‑1 inhibitor against the development of MetS‑related liver fibrosis remains unclear. The current study was designed to explicate the effect of TM5275, an oral PAI‑1 inhibitor, on MetS‑related hepatic fibrogenesis.

View Article and Find Full Text PDF

Background: Hepatic stellate cell (HSC) activation is essential for the development of liver fibrosis. Epigenetic machinery, such as DNA methylation, is largely involved in the regulation of gene expression during HSC activation. Although the pharmacological DNA demethylation of HSC using 5-aza-2'-deoxycytidine (5-aza-dC) yielded an antifibrotic effect, this drug has been reported to induce excessive cytotoxicity at a high dose.

View Article and Find Full Text PDF

Aim: Non-alcoholic steatohepatitis (NASH) has a broad clinicopathological spectrum (inflammation to severe fibrosis). The farnesoid X receptor agonist obeticholic acid (OCA) ameliorates the histological features of NASH; satisfactory antifibrotic effects have not yet been reported. Here, we investigated the combined effects of OCA + a dipeptidyl peptidase-4 inhibitor (sitagliptin) on hepatic fibrogenesis in a rat model of NASH.

View Article and Find Full Text PDF

Recent reports have revealed the impact of a western diet containing large amounts of fructose on the pathogenesis of non-alcoholic steatohepatitis (NASH). Fructose exacerbates hepatic inflammation in NASH by inducing increasing intestinal permeability. However, it is not clear whether fructose contributes to the progression of liver fibrosis and hepatocarcinogenesis in NASH.

View Article and Find Full Text PDF

The farnesoid X receptor (FXR) agonist, a bile acid-activated nuclear receptor, has been shown to improve the histologic features of nonalcoholic steatohepatitis (NASH); however, a satisfactory effect on hepatic fibrosis has not been achieved. We aimed to investigate the combined effect of FXR agonist and angiotensin II type 1 receptor blocker on hepatic fibrogenesis in rat models of NASH. For 8 weeks, two rat models of NASH were developed.

View Article and Find Full Text PDF

Aim: Dipeptidyl peptidase-4 (DPP4) inhibitors (DPP4-I) are oral glucose-lowering drugs for type 2 diabetes mellitus. Previously, we reported that DPP4-I (sitagliptin) exerted suppressive effects on experimental liver fibrosis in rats. Blockade of the renin-angiotensin system by angiotensin-II type 1 receptor blocker (losartan), commonly used in the management of hypertension, has been shown to significantly alleviate hepatic fibrogenesis and carcinogenesis.

View Article and Find Full Text PDF

Aim: To clarify whether methylation is involved in the development of nonalcoholic steatohepatitis (NASH)-related liver fibrosis in adult rats.

Methods: A choline-deficient amino acid (CDAA) diet model was employed for methylation analysis of NASH-related liver fibrosis. methylation levels were measured in the livers of CDAA- and control choline-sufficient amino acid (CSAA)-fed rats for 8 and 12 wk using quantitative methylation-specific PCR.

View Article and Find Full Text PDF

Background: It is widely understood that insulin resistance (IR) critically correlates with the development of liver fibrosis in several types of chronic liver injuries. Several experiments have proved that anti-IR treatment can alleviate liver fibrosis. Sodium-glucose cotransporter 2 (SGLT2) inhibitors comprise a new class of antidiabetic agents that inhibit glucose reabsorption in the renal proximal tubules, improving IR.

View Article and Find Full Text PDF

Background: A previous multicenter prospective randomized study from Japan showed that Helicobacter pylori eradication reduced the development of metachronous gastric cancer (MGC) after endoscopic resection for early gastric cancer. MGC risk, however, is not eliminated; yet few studies have evaluated its long-term incidence and risk factors. In this study, we investigated the incidence of and risk factors for MGC in patients who underwent endoscopic resection for early gastric cancer with successful H.

View Article and Find Full Text PDF

Helicobacter pylori infection induces aberrant DNA methylation, and methylation levels of several specific marker genes in gastric mucosa are associated with gastric cancer risk. However, it is unclear whether gastric cancer risk factors are associated with methylation levels of marker genes in healthy individuals. We conducted a cross-sectional study of 281 Japanese cancer screenees aged 40-69 years with no history of H.

View Article and Find Full Text PDF

Background: Epigenetic alterations accumulate in normal-appearing tissues of patients with cancer, producing an epigenetic field defect. Cross-sectional studies show that the degree of the defect may be associated with risk in some types of cancer, especially cancers associated with chronic inflammation.

Objective: To demonstrate, by a multicentre prospective cohort study, that the risk of metachronous gastric cancer after endoscopic resection (ER) can be predicted by assessment of the epigenetic field defect using methylation levels.

View Article and Find Full Text PDF

Hereditary diffuse gastric cancer (HDGC), characterized by susceptibility to gastric signet ring cell carcinomas (SRCCs) and caused by CDH1 germline mutations, is rare in the Japanese. We present here a Japanese family with HDGC identified by comparative genomic hybridization (CGH) analysis. A 55-year-old woman was treated with completion gastrectomy for multiple SRCCs, and pathological examination revealed approximately 200 foci of SRCC with loss of E-cadherin expression.

View Article and Find Full Text PDF

Clinical applications of aberrant DNA methylation to cancer diagnostics and therapeutics are accelerating. Especially, the CpG island methylator phenotype (CIMP), simultaneous methylation of multiple genes, provides information that cannot be obtained by other diagnostic methods and therapeutic opportunities. CIMP is known to be associated with poor or good prognosis depending upon cancer types.

View Article and Find Full Text PDF

Background: The KRAS mutation has been associated with resistance to cetuximab, an anti-epidermal growth factor receptor (EGFR) monoclonal antibody, in metastatic colorectal cancer (mCRC). However, the predictive biomarkers of cetuximab resistance in KRAS wild-type mCRC remain unknown except BRAF, NRAS, and PIK3CA exon 20. The objective of the study is to study the impact of EGFR L2 mutations on resistance to cetuximab in KRAS wild-type patients.

View Article and Find Full Text PDF

Objective: The CpG island methylator phenotype is strongly associated with poor survival in neuroblastomas. Neuroblastomas with the CpG island methylator phenotype include almost all neuroblastomas with MYCN amplification, and, even among neuroblastomas without MYCN amplification, have worse prognosis. At the same time, methylation of individual tumor-suppressor genes is also reported to be associated with poor survival.

View Article and Find Full Text PDF