Portal Hypertension Induced Changes in Splenic microRNA Expression
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ABSTRACT:
PROVIDER: PRJNA453394 | ENA |
REPOSITORIES: ENA
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Project description:Splenomegaly is caused by several pathological conditions, including portal hypertension, which is most frequently caused by chronic liver disease (e.g., liver cirrhosis). The detailed mechanisms through which portal pressure induces splenomegaly and the precise pathophysiological conditions in portal hypertension-induced splenomegaly remain to be fully elucidated. We used microarrays to identify the differential microRNA expression underlying the portal hypertension-induced splenomegaly.
2018-11-21 | GSE113612 | GEO
Project description:Portal Hypertension Induced Changes in Splenic Gene Expression
| PRJNA453393 | ENA
Project description:Splenomegaly is caused by several pathological conditions, including portal hypertension, which is most frequently caused by chronic liver disease (e.g., liver cirrhosis). The detailed mechanisms through which portal pressure induces splenomegaly and the precise pathophysiological conditions in portal hypertension-induced splenomegaly remain to be fully elucidated. We used microarrays to identify the differential gene expression underlying the portal hypertension-induced splenomegaly.
2018-11-21 | GSE113613 | GEO
Project description:Idiopathic portal hypertension (IPH) is characterized by portal hypertension due to obstruction or stenosis of the intrahepatic peripheral portal branches. Researchers have suggested that IPH may be attributed to intrahepatic peripheral portal vein thrombosis, splenic factors, abnormal autoimmunity, and related factors, however, the etiology of IPH remains unclear. We used microarrays to identify the functions of genes expressed in blood samples from patients with IPH.
2015-06-06 | GSE69601 | GEO
Project description:Idiopathic portal hypertension (IPH) is characterized by portal hypertension due to obstruction or stenosis of the intrahepatic peripheral portal branches. Researchers have suggested that IPH may be attributed to intrahepatic peripheral portal vein thrombosis, splenic factors, abnormal autoimmunity, and related factors, however, the etiology of IPH remains unclear. We used microarrays to identify the functions of genes expressed in blood samples from patients with IPH. In order to examine the specific expression of genes in patients with IPH, we analyzed blood samples from three patients with IPH and three healthy volunteers as control using DNA microarrays.
2015-06-06 | E-GEOD-69601 | biostudies-arrayexpress
Project description:Persistent liver injury triggers a fibrogenic program that causes pathologic remodelling of the hepatic microenvironment (i.e., liver fibrosis) and portal hypertension. The dynamics of gene regulation during liver disease progression and regression remain understudied. Here, we generated hepatic transcriptome profiles in two well-established liver disease models at peak fibrosis and during spontaneous regression after the removal of the inducing agents. We linked the dynamics of key liver disease readouts, such as portal pressure, collagen proportionate area, and transaminase serum levels, to most differentially expressed genes, enabling the identification of transcriptomic signatures of progressive vs. regressive liver fibrosis and portal hypertension. These candidate biomarkers (e.g., Scube1, Tcf4, Src, Hmga1, Trem2, Mafk, Mmp7) were also validated in RNA-seq datasets of patients with cirrhosis and portal hypertension. Finally, deconvolution analysis identified major cell types and suggested an association of macrophage and portal hepatocyte signatures with portal hypertension and fibrosis area in both models.
2024-02-13 | E-MTAB-13804 | biostudies-arrayexpress
Project description:Chronic liver disease is a major leading cause of portal hypertension that affects approximately 1.5 billion people globally. We show that GIMAP5, a small organellar GTPase, is selectively expressed in liver endothelial cells and human GIMAP5 deficiency causes portal hypertension with capillarization of liver sinusoidal endothelial cells (LSECs). LSEC capillarization is recapitulated in GIMAP5 loss-of-function (LOF) mice, and upon conditional Gimap5 deletion in endothelial cells. Single cell RNA-sequencing analyses reveals replacement of LSECs with capillarized endothelial cells and expansion of liver lymphatic endothelial cells in GIMAP5 LOF mice, and places GIMAP5 upstream of GATA4, a transcription factor required for LSEC-specification. Our studies reveal that GIMAP5 prevents portal hypertension by maintaining LSEC identity and suggest that LSEC is an induced endothelial cell state.
2021-03-01 | GSE158988 | GEO
Project description:Differential gene expression in small meseteric arteries under sham operated and portal hypertensive conditions Keywords: ordered
2005-04-12 | GSE2518 | GEO
Project description:Background. Idiopathic non-cirrhotic portal hypertension (INCPH) is a frequently misdiagnosed cause of portal hypertension. It also lacks a specific test for its diagnosis. This study evaluates whether using new immunohistochemistry makers derived from whole genome analysis improves the diagnosis of INCPH. Methods. We analyzed formalin-fixed, paraffin embedded (FFPE) liver tissue from 18 INCPH and 22 patients with cirrhosis (LC) as well as from 14 histologically normal livers (HNL) as controls. Microarray experiments were performed using Illumina Whole-Genome DASL HT BeadChip arrays. Selected genes showing differential expression at Illumina were confirmed using quantitative real-time PCR (qRT-PCR) gene expression performed with Fluidigm Biomark HD system in a subgroup of samples. Immunohistochemistry was used to confirm the qRT-PCR results. Results. At Illumina, a total of 292 genes were differentially expressed (FC>+2/-2 and p-value <0.05) in INCPH compared to the control group (LC and HNL) (202 up-regulated and 90 down-regulated).
2018-03-31 | GSE77627 | GEO
Project description:Background and aims. Portal hypertension is the main consequence of cirrhosis, responsible for the complications defining clinical decompensation. The only cure for decompensated cirrhosis is liver transplantation, but it is a limited resource and opens the possibility of regenerative therapy. We investigated the potential of human amniotic membrane-derived mesenchymal stromal (hAMSCs) and epithelial (hAECs) stem cells for the treatment of portal hypertension and chronic liver disease. Methods. In vivo: hAMSCs and hAECs were isolated from human amniotic membranes. Cirrhotic rats with ascites (chronic CCl4 inhalation) received 4x10e6 hAMSCs, 4x10e6 hAECs, or vehicle (NaCl 0.9%) (intraperitoneal; n=10 per group). After 2-week we analyzed: a) portal pressure (PP) and liver microcirculatory function; b) liver sinusoidal endothelial (LSECs) and hepatic stellate (HSCs) cells phenotype; c) hepatic fibrosis, inflammation and hepatic function. In vitro: HSCs isolated from CCl4-cirrhotic rats were co-cultured with hAMSCs, hAECs or vehicle for 24h. RNA profile was analyzed by RNAseq. Results. Cirrhotic rats receiving hAMSCs or hAECs had significantly lower PP than vehicle-treated animals, together with improved liver microcirculatory function. This hemodynamic amelioration was associated with improvement in LSECs capillarization and HSCs de-activation, although hepatic collagen/fibrosis was not significantly reduced. Rats that received placenta derived stem cells had markedly reduced hepatic inflammation and oxidative stress. Finally, liver function tests significantly improved in rats receiving hAMSCs. In vitro experiments confirmed HSCs de-activation when co-cultured with stem cells. Conclusion. This pre-clinical study shows that infusion of human amniotic stem cells effectively decreases PP by ameliorating liver microcirculation, suggesting that it may represent a new treatment option for advanced cirrhosis with portal hypertension.
2021-09-11 | GSE125955 | GEO