53 research outputs found

    ジコ メンエキセイ スイエン ニ タイスル ステロイド チリョウ コウカ ハンテイ ニ Ga scintigraphy ガ ユウヨウ デアッタ 1レイ

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    Some cases of chronic idiopathic pancreatitis associated with autoimmune disease havebeen reported. The autoimmune pancreatitis revealed a diffusely irregular and narrowedpancreatic duct and responded well to steroid treatment. We report a case of autoimmunepancreatitis with a significant role of Gallium scintigraphy in response to steroid therapy.A sixty seven-year-old male, with upper abdominal pain, appetite loss and thirst, presenteddiffuse pancreatic swelling on abdominal ultrasonography, and diffuse irregular narrowingof the pancreatic duct and stenosis of the distal common bile duct. Gallium-67 scitigraphyrevealed high uptake in the whole pancreas. The patient underwent pancreatic biopsy torule out pancreatic cancer and malignant lymphoma. The definitive diagnosis was autoimmunepancreatitis. The patient recovered quickly with steroid therapy after the biopsy

    スイ カセイ ノウホウ ニ タイスル フククウキョウカ ノホウ イ フンゴウジュツ : イヘキ トノ ユチャク オ ゼンテイ ト シナイ アンゼンナ ジュツシキ

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    A forty seven-year-old male who had been in clinical follow-up for a pancreatic pseudocystunderwent a laparoscopic cystogastrostomy through the lesser peritoneal sac in 1996. Thisprocedure is performed by creating a cystotomy and posterior gastrotomy through whichan Endo GIATM is applied. The mouth of cystogastrostomy is closed using continuous suturesby Endo STITCHTM. This approach does not rely on adhesions between the pseudocyst andposterior wall of the stomach, and offers clear advantages over previously described techniquesin the management of pancreatic pseudocyst

    Identification of Physiologically Active Substances as Novel Ligands for MRGPRD

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    Mas-related G-protein coupled receptor member D (MRGPRD) is a G protein-coupled receptor (GPCR) which belongs to the Mas-related GPCRs expressed in the dorsal root ganglia (DRG). In this study, we investigated two novel ligands in addition to beta-alanine: (1) beta-aminoisobutyric acid, a physiologically active substance, with which possible relation to tumors has been seen together with beta-alanine; (2) diethylstilbestrol, a synthetic estrogen hormone. In addition to the novel ligands, we found that transfection of MRGPRD leads fibroblast cells to form spheroids, which would be related to oncogenicity. To understand the MRGPRD novel character, oncogenicity, a large chemical library was screened in order to obtain MRGPRD antagonists to utilize in exploring the character. The antagonist in turn inhibited the spheroid proliferation that is dependent on MRGPRD signaling as well as MRGPRD signals activated by beta-alanine. The antagonist, a small-molecule compound we found in this study, is a potential anticancer agent

    Steroids-producing nodules: a two-layered adrenocortical nodular structure as a precursor lesion of cortisol-producing adenoma

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    コルチゾール産生腫瘍の前駆病変を世界で初めて発見--副腎腫瘍の発生メカニズムの解明と副腎皮質疾患の治療への応用に期--京都大学プレスリリース. 2024-04-03.Background: The human adrenal cortex consists of three functionally and structurally distinct layers; zona glomerulosa, zona fasciculata (zF), and zona reticularis (zR), and produces adrenal steroid hormones in a layer-specific manner; aldosterone, cortisol, and adrenal androgens, respectively. Cortisol-producing adenomas (CPAs) occur mostly as a result of somatic mutations associated with the protein kinase A pathway. However, how CPAs develop after adrenocortical cells acquire genetic mutations, remains poorly understood. Methods: We conducted integrated approaches combining the detailed histopathologic studies with genetic, RNA-sequencing, and spatially resolved transcriptome (SRT) analyses for the adrenal cortices adjacent to human adrenocortical tumours. Findings: Histopathological analysis revealed an adrenocortical nodular structure that exhibits the two-layered zF- and zR-like structure. The nodular structures harbour GNAS somatic mutations, known as a driver mutation of CPAs, and confer cell proliferative and autonomous steroidogenic capacities, which we termed steroids-producing nodules (SPNs). RNA-sequencing coupled with SRT analysis suggests that the expansion of the zF-like structure contributes to the formation of CPAs, whereas the zR-like structure is characterised by a macrophage-mediated immune response. Interpretation: We postulate that CPAs arise from a precursor lesion, SPNs, where two distinct cell populations might contribute differently to adrenocortical tumorigenesis. Our data also provide clues to the molecular mechanisms underlying the layered structures of human adrenocortical tissues. Funding: KAKENHI, The Uehara Memorial Foundation, Daiwa Securities Health Foundation, Kaibara Morikazu Medical Science Promotion Foundation, Secom Science and Technology Foundation, ONO Medical Research Foundation, and Japan Foundation for Applied Enzymology
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