Publications by authors named "Ghorbani P"

Purpose: To assess the association between neoadjuvant therapy and overall survival (OS) in patients with left-sided resectable pancreatic cancer (RPC) compared to upfront surgery.

Background: Left-sided pancreatic cancer is associated with worse OS compared to right-sided pancreatic cancer. Although neoadjuvant therapy is currently seen as not effective in patients with RPC, current randomized trials included mostly patients with right-sided RPC.

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Background: Ampullary adenocarcinoma (AAC) typically presents at an early stage due to biliary obstruction and therefore might be specifically suitable for minimally invasive pancreatoduodenectomy (MIPD). However, studies assessing MIPD specifically for AAC, including the robotic and laparoscopic approach, are limited. The aim of this study is to compare short- and long-term oncological resection and perioperative outcomes of robotic (RPD), laparoscopic (LPD) and open pancreatoduodenectomy (OPD) performed specifically for AAC.

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Background And Objective: Dental implant therapy faces challenges in patients with Type 1 and Type 2 Diabetes Mellitus (T1DM and T2DM) due to adverse effects on bone metabolism and immune response. Despite advancements, diabetic patients face higher risks of peri-implantitis and compromised osseointegration. This review assesses the impact of anti-diabetic medications on implant outcomes, offering insights to bridge the gap between animal studies and clinical practice.

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  • International guidelines for imaging follow-up after pancreatic resection for pancreatic ductal adenocarcinoma (PDAC) are inconsistent, leading to varied follow-up strategies globally.
  • The study aimed to compare clinical outcomes, including treatment for recurrence and survival rates, between patients who received either symptomatic follow-up or routine imaging after PDAC surgery across 33 international centers.
  • A total of 333 patients were analyzed, showing that 29% had symptomatic follow-up while 71% underwent routine imaging, with overall survival rates being examined through statistical methods to identify the impact of the follow-up strategy on patient outcomes.
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  • This study aimed to explore the impact of chronic obstructive pulmonary disease (COPD) on the risk of postoperative complications after pancreatoduodenectomy, a surgery for pancreatic cancer.
  • Of 1009 patients studied, 57 had COPD, but no significant link was found between COPD and major complications as assessed by the Clavien-Dindo score (CD≥ IIIa). However, COPD was linked to a higher risk of developing postoperative pancreatic fistula (POPF).
  • The findings suggest that while COPD does not increase overall complication rates significantly, it does pose a higher risk for POPF, indicating the need for careful evaluation of COPD in surgical risk assessments.
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Chronic pancreatitis is a severe disabling disease with persistent pain as the most prominent symptom often leading to significant quality of life (QoL) reduction. Current international guidelines propagate a step-up approach in which surgery should only be considered as a last resort in patients with failure of both medical and endoscopic interventions. Accumulating evidence, however, suggests that surgery is superior to endoscopic therapy and that early surgical intervention is beneficial in terms of pain relief, pancreatic function and QoL.

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Background: The overall treatment response among patients with locally advanced pancreatic cancer (LAPC) is poorly understood as most studies report solely on resected patients. We aimed to investigate the outcomes in patients with LAPC as an intention-to-treat-analysis from the time of diagnosis from a complete source population.

Patients And Methods: An observational cohort study in a population-defined region within a universal healthcare system.

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Autoimmune pancreatitis (AIP) type 1, paraduodenal (groove) pancreatitis, and follicular pancreatitis are rare clinical entities whose diagnosis may be challenging, given the potential imaging overlap with pancreatic cancer. We performed a retrospective analysis of the medical chart of a patient with multiple pancreas pathologies. We present a case with multiple pancreas pathologies, including a poorly differentiated ductal adenocarcinoma of pancreatobiliary type, an intraductal papillary mucinous lesion (pre-existing lesion of IPMN type), and an inflammatory process with complex features, in which paraduodenal (groove) pancreatitis, follicular pancreatitis, and IgG4-related pancreatitis (AIP type 1) were also present.

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Background: Pancreatic adenocarcinoma located in the pancreatic body might require a portomesenteric venous resection (PVR), but data regarding surgical risks after distal pancreatectomy (DP) with PVR are sparse. Insight into additional surgical risks of DP-PVR could support preoperative counseling and intraoperative decision making. This study aimed to provide insight into the surgical outcome of DP-PVR, including its potential risk elevation over standard DP.

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  • The study analyzed data from over 74,000 ERCP procedures to identify factors that impact the duration of the procedure and created an estimation tool called SWEET.
  • Key influencers on ERCP time included specific conditions like primary sclerosing cholangitis, certain anatomical features, and procedural steps such as lithotripsy and dilation.
  • The SWEET tool, validated with a large external dataset, accurately predicts ERCP time, improving scheduling efficiency in clinical settings by averaging a 17.5-minute difference between actual and predicted durations.
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  • Atherosclerosis treatment often involves bypass surgery using veins or arteries, but graft compatibility issues can lead to the need for reoperation over time.* -
  • This study tested the mechanical properties of human bypass grafts, specifically measuring their elastic modulus through uniaxial tensile testing and using the Mooney-Rivlin model for hyperelastic characteristics.* -
  • Results showed that the saphenous vein has the highest stiffness among the tested grafts, which could improve clinical strategies for treating heart disease based on these mechanical properties.*
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The COVID-19 pandemic's disruptions to human activities prompted serious environmental changes. Here, we assessed the variations in coastal water quality along the Caspian Sea, with a focus on the Iranian coastline, during the lockdown. Utilizing Chlorophyll-a data from MODIS-AQUA satellite from 2015 to 2023 and Singular Spectrum Analysis for temporal trends, we found a 22% Chlorophyll-a concentration decrease along the coast, from 3.

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Background: Cancer arising in the periampullary region can be anatomically classified in pancreatic ductal adenocarcinoma (PDAC), distal cholangiocarcinoma (dCCA), duodenal adenocarcinoma (DAC), and ampullary carcinoma. Based on histopathology, ampullary carcinoma is currently subdivided in intestinal (AmpIT), pancreatobiliary (AmpPB), and mixed subtypes. Despite close anatomical resemblance, it is unclear how ampullary subtypes relate to the remaining periampullary cancers in tumor characteristics and behavior.

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  • Dysregulated cholesterol metabolism plays a significant role in atherosclerosis, and the study examines how the AMPK-HMGCR signaling pathway affects cholesterol levels and atherosclerosis development.
  • The research used two types of mice: HMGCR S871A knock-in (KI) mice and wild-type (WT) mice, both fed a high-fat and high-cholesterol diet to induce atherosclerosis, but found no significant differences in atherosclerotic plaque formation between the two.
  • The findings suggest limited impact of AMPK-mediated control on cholesterol synthesis related to atherosclerosis progression, highlighting the need for further investigation into various atherosclerosis models.
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Background: Despite differences in tumour behaviour and characteristics between duodenal adenocarcinoma (DAC), the intestinal (AmpIT) and pancreatobiliary (AmpPB) subtype of ampullary adenocarcinoma and distal cholangiocarcinoma (dCCA), the effect of adjuvant chemotherapy (ACT) on these cancers, as well as the optimal ACT regimen, has not been comprehensively assessed. This study aims to assess the influence of tailored ACT on DAC, dCCA, AmpIT, and AmpPB.

Patients And Methods: Patients after pancreatoduodenectomy for non-pancreatic periampullary adenocarcinoma were identified and collected from 36 tertiary centres between 2010 - 2021.

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Metabolic programming underpins inflammation and liver macrophage activation in the setting of chronic liver disease. Here, we sought to identify the role of an important metabolic regulator, AMP-activated protein kinase (AMPK), specifically within myeloid cells during the progression of non-alcoholic steatohepatitis (NASH) and whether treatment with metformin, a firstline therapy for diabetes and activator of AMPK could stem disease progression. Male and female Prkaa1/Prkaa2 (Flox) control and Flox-LysM-Cre (MacKO) mice were fed a low-fat control or a choline-deficient, amino acid defined 45% Kcal high-fat diet (CDAHFD) for 8 weeks, where metformin was introduced in the drinking water (50 or 250 mg/kg/day) for the last 4 weeks.

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  • In pancreatic cancer, the presence of CD8+ T cells within tumors is linked to better patient outcomes, but many of these T cells become trapped without effectively attacking the tumor.
  • Researchers identified a specific subset of CD8+ T cells that are both CD39 and CD103 positive (DP CD8+ T cells), which show signs of being reactive to tumors and are more prevalent in the central areas of pancreatic tumors.
  • DP CD8+ T cells exhibit characteristics of exhaustion but also have features indicating they are responding to the tumor; a higher percentage of these cells correlates with improved patient survival, suggesting their potential role in guiding immunotherapy treatments.
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Objective: Chronic exposure to persistent organic pollutants (POPs) is associated with increased incidence of type 2 diabetes, hyperglycemia, and poor insulin secretion in humans. Dioxins and dioxin-like compounds are a broad class of POPs that exert cellular toxicity through activation of the aryl hydrocarbon receptor (AhR). We previously showed that a single high-dose injection of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD, aka dioxin; 20 μg/kg) in vivo reduced fasted and glucose-stimulated plasma insulin levels for up to 6 weeks in male and female mice.

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Objectives: The aim of this international multicentric study is to characterize postoperative hyperamylasemia (POH) after distal pancreatectomy (DP), with particular focus on its relationship with postoperative pancreatic fistula (POPF) occurrence and severity.

Background: The clinical relevance of POH after DP and its relationship with the occurrence and severity of POPF have not been explored yet.

Methods: All patients undergoing DP for any indication between 2015 and 2021 at three European referral Centers for pancreatic surgery were retrospectively analyzed.

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Background: Clinically relevant (CR) postoperative pancreatic fistula (POPF) after distal pancreatectomy (DP) are common. Endoscopic treatment (ET) has only scarcely been explored. The aim of this study was to evaluate risk factors for CR POPF after DP and the efficacy of ET in adjunct to standard therapy.

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