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portal vein hypertension

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https://www.readbyqxmd.com/read/28804949/portal-vein-aorta-ratio-in-dogs-with-acquired-portosystemic-collaterals
#1
Y Sakamoto, M Sakai, T Watari
BACKGROUND: The portal vein (PV) diameter increases in humans with portal hypertension (PH). However, there is no evidence of PV enlargement in dogs with PH. OBJECTIVES: To measure the PV-to-aorta (PV/Ao) ratio in dogs with PH (chronic hepatitis [CH], primary hypoplasia of the PV [PHPV]), in dogs with extrahepatic congenital portosystemic shunt (EH-CPSS), and in healthy dogs, and to evaluate the relationship between PV/Ao ratio and splenic pulp pressure (SPP). ANIMALS: Twenty-five dogs with acquired portosystemic collaterals (APSCs; 15 with CH, 10 with PHPV), 32 dogs with EH-CPSS, and 20 healthy dogs...
August 14, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28792652/mutations-in-the-novel-gene-fopv-are-associated-with-familial-autosomal-dominant-and-non-familial-obliterative-portal-venopathy
#2
Claude Besmond, Dominique Valla, Laurence Hubert, Karine Poirier, Brigitte Grosse, Catherine Guettier, Olivier Bernard, Emmanuel Gonzales, Emmanuel Jacquemin
BACKGROUND AND AIMS: Obliterative portal venopathy (OPV) is characterized by lesions of portal vein intrahepatic branches and is thought to be responsible for many cases of portal hypertension in absence of cirrhosis or obstruction of large portal or hepatic veins. In most cases the cause of OPV remains unknown. The aim was to identify a candidate gene of OPV. METHODS: Whole exome sequencing was performed in two families, including 6 patients with OPV. Identified mutations were confirmed by Sanger sequencing and expression of candidate gene transcript was studied by real time qPCR in human tissues...
August 9, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28740341/glutamine-prevents-oxidative-stress-in-a-model-of-portal-hypertension
#3
Gilmara Pandolfo Zabot, Gustavo Franco Carvalhal, Norma Possa Marroni, Francielli Licks, Renata Minuzzo Hartmann, Vinícius Duval da Silva, Henrique Sarubbi Fillmann
AIM: To evaluate the protective effects of glutamine in a model of portal hypertension (PH) induced by partial portal vein ligation (PPVL). METHODS: Male Wistar rats were housed in a controlled environment and were allowed access to food and water ad libitum. Twenty-four male Wistar rats were divided into four experimental groups: (1) control group (SO) - rats underwent exploratory laparotomy; (2) control + glutamine group (SO + G) - rats were subjected to laparotomy and were treated intraperitoneally with glutamine; (3) portal hypertension group (PPVL) - rats were subjected to PPVL; and (4) PPVL + glutamine group (PPVL + G) - rats were treated intraperitoneally with glutamine for seven days...
July 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28733177/transjugular-local-thrombolysis-with-without-tips-in-patients-with-acute-non-cirrhotic-non-malignant-portal-vein-thrombosis
#4
Christoph Klinger, Bettina Riecken, Arthur Schmidt, Andrea De Gottardi, Benjamin Meier, Jaime Bosch, Karel Caca
BACKGROUND & AIMS: Therapeutic anticoagulation is the standard treatment in patients with acute non-cirrhotic portal vein thrombosis (PVT). In critically ill patients, anticoagulation only may not suffice to achive rapid and stable recanalization. This study evaluates efficacy and safety of transjugular interventional therapy in acute non-cirrhotic PVT. METHODS: This retrospective study includes 17 consecutive patients with acute noncirrhotic, non-malignant PVT...
June 27, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28729141/effects-of-transjugular-intrahepatic-portosystemic-shunt-tips-on-blood-volume-distribution-in-patients-with-cirrhosis
#5
Troels M Busk, Flemming Bendtsen, Jens H Henriksen, Stefan Fuglsang, Jens O Clemmesen, Fin S Larsen, Søren Møller
BACKGROUND: Cirrhosis is accompanied by portal hypertension with splanchnic and systemic arterial vasodilation, and central hypovolaemia. A transjugular intrahepatic portosystemic shunt (TIPS) alleviates portal hypertension, but also causes major haemodynamic changes. AIMS: To investigate effects of TIPS on regional blood volume distribution, and systemic haemodynamics. METHODS: Thirteen cirrhotic patients had their regional blood volume distribution determined with gamma-camera technique before and after TIPS...
June 27, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28711320/liver-stiffness-measurement-by-transient-elastography-predicts-late-posthepatectomy-outcomes-in-patients-undergoing-resection-for-hepatocellular-carcinoma
#6
Muthukumarassamy Rajakannu, Daniel Cherqui, Oriana Ciacio, Nicolas Golse, Gabriella Pittau, Marc Antoine Allard, Teresa Maria Antonini, Audrey Coilly, Antonio Sa Cunha, Denis Castaing, Didier Samuel, Catherine Guettier, René Adam, Eric Vibert
BACKGROUND: Postoperative hepatic decompensation is a serious complication of liver resection in patients undergoing hepatectomy for hepatocellular carcinoma. Liver fibrosis and clinical significant portal hypertension are well-known risk factors for hepatic decompensation. Liver stiffness measurement is a noninvasive method of evaluating hepatic venous pressure gradient and functional hepatic reserve by estimating hepatic fibrosis. Effectiveness of liver stiffness measurement in predicting persistent postoperative hepatic decompensation has not been investigated...
July 12, 2017: Surgery
https://www.readbyqxmd.com/read/28694570/extrahepatic-portal-vein-obstruction-in-children-role-of-preoperative-imaging
#7
Shashidhar Achar, Hemonta Kumar Dutta, Rudra Kanta Gogoi
AIM: Extrahepatic portal vein obstruction (EHPVO) is characterized by features of recent thrombosis or portal hypertension with portal cavernoma as a sequel of portal vein obstruction. Imaging of spleno-portal axis is the mainstay for the diagnosis of EHPVO. The aim of this study is to analyze the role of imaging in the preoperative assessment of the portal venous system in children with EHPVO. MATERIALS AND METHODS: A hospital-based cross-sectional study was conducted on twenty children with EHPVO aged between 1 and 18 years over a period of 1 year...
July 2017: Journal of Indian Association of Pediatric Surgeons
https://www.readbyqxmd.com/read/28685257/budd-chiari-syndrome-hepatic-venous-outflow-tract-obstruction
#8
REVIEW
Dominique-Charles Valla
BACKGROUND: Budd-Chiari syndrome (BCS) is a rare disease characterized by hepatic venous outflow tract obstruction (HVOTO). METHODS: Recent literature has been analyzed for this narrative review. RESULTS: Primary BCS/HVOTO is a result of thrombosis. The same patient often has multiple risk factors for venous thrombosis and most have at least one. Presentation and etiology may differ between Western and certain Eastern countries. Myeloproliferative neoplasms are present in 40% of patients and are usually associated with the V617F-JAK2 mutation in myeloid cells, in particular peripheral blood granulocytes...
July 6, 2017: Hepatology International
https://www.readbyqxmd.com/read/28661458/adipokines-in-liver-cirrhosis
#9
REVIEW
Christa Buechler, Elisabeth M Haberl, Lisa Rein-Fischboeck, Charalampos Aslanidis
Liver fibrosis can progress to cirrhosis, which is considered a serious disease. The Child-Pugh score and the model of end-stage liver disease score have been established to assess residual liver function in patients with liver cirrhosis. The development of portal hypertension contributes to ascites, variceal bleeding and further complications in these patients. A transjugular intrahepatic portosystemic shunt (TIPS) is used to lower portal pressure, which represents a major improvement in the treatment of patients...
June 29, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28660156/a-review-of-non-operative-treatments-for-hepatocellular-carcinoma-with-advanced-portal-vein-tumor-thrombus
#10
REVIEW
Michihisa Moriguchi, Mitsuhiro Furuta, Yoshito Itoh
Portal vein tumor thrombus (PVTT) frequently occurs with the progression of hepatocellular carcinoma (HCC) and is an important factor in determining the prognosis of HCC. In many cases of HCC with advanced PVTT, treatment is difficult because the tumor has considerable extension into the liver, and portal hypertension is a frequent complication. The standard therapy for unresectable HCC with advanced PVTT is sorafenib therapy in patients with good hepatic function. However, the outcomes of sorafenib therapy are not completely satisfactory, making the development of another therapy an urgent task...
June 28, 2017: Journal of Clinical and Translational Hepatology
https://www.readbyqxmd.com/read/28660155/new-evidence-and-perspectives-on-the-management-of-hepatocellular-carcinoma-with-portal-vein-tumor-thrombus
#11
REVIEW
Jun Yin, Wen-Tao Bo, Jian Sun, Xiao Xiang, Jin-Yi Lang, Jian-Hong Zhong, Le-Qun Li
Portal vein tumor thrombosis (PVTT) is an intractable condition but common phenomenon in hepatocellular carcinoma (HCC). HCC patients with PVTT may have worse liver function, a higher chance of comorbidity related to portal hypertension, lower tolerance to treatment and poorer prognoses. In Western guidelines, patients are offered palliative treatment with sorafenib or other systemic agents because HCC with PVTT is grouped together with metastatic HCC during the planning of its management. In recent years, various treatment options have become available for patients with HCC and PVTT...
June 28, 2017: Journal of Clinical and Translational Hepatology
https://www.readbyqxmd.com/read/28660012/angiotensin-ii-or-epinephrine-hemodynamic-and-metabolic-responses-in-the-liver-of-l-name-induced-hypertension-and-spontaneous-hypertensive-rats
#12
Debora Conte Kimura, Marcia Regina Nagaoka, Durval Rosa Borges, Maria Kouyoumdjian
AIM: To study hepatic vasoconstriction and glucose release induced by angiotensin (Ang)II or Epi in rats with pharmacological hypertension and spontaneously hypertensive rat (SHR). METHODS: Isolated liver perfusion was performed following portal vein and vena cava cannulation; AngII or epinephrine (Epi) was injected in bolus and portal pressure monitored; glucose release was measured in perfusate aliquots. RESULTS: The portal hypertensive response (PHR) and the glucose release induced by AngII of L-NAME were similar to normal rats (WIS)...
June 18, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28656461/comparison-of-radial-4d-flow-mri-with-perivascular-ultrasound-to-quantify-blood-flow-in-the-abdomen-and-introduction-of-a-porcine-model-of-pre-hepatic-portal-hypertension
#13
A Frydrychowicz, A Roldan-Alzate, E Winslow, D Consigny, C A Campo, U Motosugi, K M Johnson, O Wieben, S B Reeder
OBJECTIVES: Objectives of this study were to compare radial time-resolved phase contrast magnetic resonance imaging (4D Flow-MRI) with perivascular ultrasound (pvUS) and to explore a porcine model of acute pre-hepatic portal hypertension (PHTN). METHODS: Abdominal 4D Flow-MRI and pvUS in portal and splenic vein, hepatic and both renal arteries were performed in 13 pigs of approximately 60 kg. In six pigs, measurements were repeated after partial portal vein (PV) ligature...
June 27, 2017: European Radiology
https://www.readbyqxmd.com/read/28651622/modulation-of-hepatic-perfusion-did-not-improve-recovery-from-hepatic-outflow-obstruction
#14
J Arlt, W Wei, C Xie, A Homeyer, U Settmacher, U Dahmen, O Dirsch
BACKGROUND: Focal hepatic venous outflow obstruction frequently occurs after extended liver resection and leads to a portal hypertension, arterial hypoperfusion and parenchymal necrosis. In this study, we investigated the pharmacological modulation of liver perfusion and hepatic damage in a surgical model of hepatic outflow obstruction after extended liver resection by administration of 5 different drugs in comparison to an operative intervention, splenectomy. METHODS: Male inbred Lewis rats (Lew/Crl) were subjected to right median hepatic vein ligation + 70% partial hepatectomy...
June 26, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28647833/the-evaluation-of-the-right-inferior-phrenic-artery-diameter-in-cirrhotic-patients
#15
Kaan Esen, Yuksel Balci, Sermin Tok, Enver Ucbilek, Engin Kara, Omer Kaya
PURPOSE: The purpose of this study is to evaluate the relationship between right inferior phrenic artery diameter and portal hypertension in cirrhotic patients. METHODS: CT examinations of 38 patients with chronic liver disease (patient group) and 40 patients without any liver disease (control group) were evaluated. The right inferior phrenic artery diameter of the patient and control group were measured. CT findings of portal hypertension, which were accepted as ascites, collaterals, splenomegaly and portal vein diameter greater than 13 mm, were determined and scored in the patient group...
June 24, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28643816/-budd-chiari-syndrome-and-ulcerative-colitis-in-an-adolescent
#16
Federico Marchetti, Martina Mainetti, Michela Giovannini, Cristina Morelli
In patients with inflammatory bowel disease (IBD) there is an increased incidence of thromboembolic events. We report a case of a female, age 14, with a 6 months history of diarrhea with occasional presence of red blood and with a very distended abdomen with evident ascites. The diagnosis was Budd-Chiari syndrome (BCS) in ulcerative colitis (UC). Therapy with subcutaneous low molecular weight heparin, methylprednisolone, mesalazine was started. Clinical and radiological features quickly improved. No thrombophilia abnormality nor other risk factor for thrombosis were detected...
May 2017: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/28643575/combined-rex-bypass-shunt-with-pericardial-devascularization-alleviated-prehepatic-portal-hypertension-caused-by-cavernomatous-transformation-of-portal-vein
#17
Ruo-Yi Wang, Jun-Feng Wang, Qian Liu, Nan Ma, Wei-Xiu Chen, Jin-Liang Li
OBJECTIVE: To evaluate the effects of combined Rex-bypass shunt and pericardial devascularization on prehepatic portal hypertension secondary to cavernomatous transformation of portal vein (CTPV). METHODS: Forty-two patients aged from 3 years to 49 years (divided into 3 groups), 26 cases male and 16 female, with prehepatic vascular hepertention were treated with Rex-bypass shunt combined with pericardial devascularization. In each patient, preoperative assessment included ultrasound and computed tomographic angiography of the portal vein and blood analysis...
June 23, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28640110/case-report-of-a-modified-meso-rex-bypass-as-a-treatment-technique-for-late-onset-portal-vein-cavernous-transformation-with-portal-hypertension-after-adult-deceased-donor-liver-transplantation
#18
Dongdong Han, Rui Tang, Liang Wang, Ang Li, Xin Huang, Shan Shen, Jiahong Dong
RATIONALE: Portal vein thrombosis is a complication after liver transplantation and cavernous transformation of the portal vein (CTPV) is a result of portal vein thrombosis, with symptoms of portal hypertension revealed by an enhanced CT scan. Meso-Rex bypass is an artificial shunt connecting the left portal vein to the superior mesenteric vein and is mainly used for idiopathic cavernomas. This technique is also used for post-transplant portal vein thrombosis in pediatric patients thereby bypassing obstructed sites of the extrahepatic portal vein...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28638930/-different-adipose-tissue-depots-and-metabolic-syndrome-in-human
#19
Ran Wang, Xiao-Nan Li
Obesity is characterized by abnormal and excessive adipose tissue accumulated in the body. Compared with peripheral obesity (the accumulation of subcutaneous adipose tissue), abdominal obesity (the accumulation of visceral adipose tissue) is associated with increased risk of the metabolic syndrome, such as diabetes, hypertension, atherosclerosis, and dyslipidemia. Adipose tissue is a highly heterogeneous endocrine organ. Adipose tissue depots differ significantly in anatomy, cell biology, glucose and lipid metabolism as well as in endocrine regulation...
June 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28629642/splenic-vein-reconstruction-is-unnecessary-in-pancreatoduodenectomy-combined-with-resection-of-the-superior-mesenteric-vein-portal-vein-confluence-according-to-short-term-outcomes
#20
Haruyoshi Tanaka, Akimasa Nakao, Kenji Oshima, Kiyotsugu Iede, Yukiko Oshima, Hironobu Kobayashi, Yasunori Kimura
BACKGROUND: Superior mesenteric vein-portal vein confluence resection combined with pancreatoduodenectomy (SMPVrPD) is occasionally required for resection of pancreatic head tumors. It remains unclear whether such situations require splenic vein (SV) reconstruction for decompression of left-sided portal hypertension (LSPH). METHODS: The data from 93 of 104 patients who underwent pancreatoduodenectomy (PD) for pancreatic head malignancies were reviewed. Surgical outcomes in three groups-standard PD (control group), PD combined with vascular resection and SV preservation (SVp group), and SMPVrPD with SV resection (SVr group)-were compared...
June 16, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
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