Ayiomamitis G

Ayiomamitis G
Tzaneio General Hospital of Piraeus · First Department of Surgery

Doctor of Philosophy

About

27
Publications
3,174
Reads
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373
Citations
Additional affiliations
January 2015 - December 2016
Tzaneio General Hospital of Piraeus
Position
  • Consultant General Surgeon & Laparoscopic Surgeon, Bariatric Surgery
December 2008 - present
Tzaneio General Hospital of Piraeus
Position
  • Consultant General Surgeon
Description
  • General Surgery, Surgical Oncology, Advanced Laparoscopic Surgery Bariatric Surgery
October 2007 - September 2008
Central Manchester University Hospitals NHS Foundation Trust
Position
  • Clinical Fellow

Publications

Publications (27)
Article
Full-text available
Adoptive cell therapy with the use of tumor-infiltrating lymphocytes (TILs) is a very promising immunotherapeutic approach for the treatment of patients with colorectal cancer (CRC). However, within the tumor microenvironment, co‑inhibitory immune checkpoints can inactivate TILs. The aim of the present study was to examine the association between t...
Article
Full-text available
Background: Microsatellite unstable colorectal cancers (MSI+ CRCs) expressing PD-L1, respond to anti-PD-1 or anti-PD-L1 checkpoint blockade, whereas microsatellite-stable tumors do not respond the same. Our aim was to examine how the immune landscape relates to different aspects of the CRC's biology, including neoepitope burden. Methods: We used...
Article
Full-text available
Background: Cyclooxygenase 2 (COX-2) is involved in the initial steps of colorectal cancer (CRC) formation, playing a key role in the catalysis of arachidonic acid to prostaglandin E2 (PGE2). The human telomerase reverse transcriptase (hTERT or TERT) also plays an important role in colorectal cancer growth, conferring sustained cell proliferation...
Article
Full-text available
Aim To study the expression of angiodrastic chemokines in colorectal tumors and correlate findings with clinicopathological parameters and survival. Methods The proangiogenic factor VEGF, the angiogenic chemokines CXCL8 and CXCL6, and the angiostatic chemokine CXCL4 were measured by ELISA in tumor and normal tissue of 35 stage II and III patients...
Article
Introduction Patients with ventriculoperitoneal shunts (VPS) are at risk of associated complications during laparoscopic surgery. Although these cases are rare, the surgeon should be aware of the pathophysiology of such complications in order to recognize and avoid them. Case presentation Three patients with a VPS who underwent laparoscopic cholec...
Article
Full-text available
Objective: The elucidation of the changes of fetuin-A in the context of bariatric surgery. Design: Twenty obese patients (8 males, 12 females; body mass index = 42.5±3.4 kg/m2) were studied at baseline and 6 months after bariatric surgery. Results: Serum fetuin-A levels did not differ with regard to the presence of each individual component of...
Article
Full-text available
Background: We compared the effects of intravenous lidocaine (IVL) with lumbar epidural lidocaine analgesia (LEA) on pain and ileus after open colonic surgery. Methods: Between December 2011 and February 2013, 60 patients were randomly allocated to IVL, LEA, or control group. The IVL group received intraoperatively lidocaine 2 % intravenously (1...
Article
Full-text available
Introduction. Primary splenic angiosarcoma is an extremely unusual neoplasm originating from sinusoidal vascular endothelium. Surgical extirpation is the mainstay of treatment of this highly malignant disease. Case Presentation. An 82-year-old woman was admitted with left pleural effusion and a palpable left upper quadrant abdominal mass, secondary...
Article
Full-text available
Peptide hormone somatostatin and its receptors have a wide range of physiological functions and play a role in the treatment of numerous human diseases, including colorectal cancer. Octreotide, a synthetic somatostatin-analog peptide, inhibits growth of colonic cancer cells primarily by binding to G-protein coupled receptors and elicits cellular re...
Article
Full-text available
BACKGROUND: Colorectal cancer is one of the most common cancers and the third leading cause of cancer death in both sexes. The disease progresses as a multistep process and is associated with genetic alterations. One of the characteristic features of cancer is telomerase activation. We sought to evaluate the differences in telomerase activity betwe...
Article
Aim-Background The present review of the literature evaluates whether laparoscopic resection of gastric GISTs can become the new “gold standard” treatment, analyzing perioperative characteristics and long-term oncological outcome. Surgery remains the standard treatment for non-metastatic gastrointestinal stromal tumours (GISTs). Laparoscopic surger...
Article
The emphasis for research in inguinal hernia repair has shifted from hernia recurrence to groin pain, which is considered the most important factor for poor quality of life. : To evaluate hernia recurrences and pain at trocar site and at inguinal hernia site, in patients who underwent tacks-free transabdominal preperitoneal inguinal hernia repair,...
Article
Introduction: In the early post-traumatic period, diaphragmatic hernias may be missed and complicated at a later time by intestinal obstruction and strangulation. In most cases, open thoracic or abdominal approach is performed. While laparoscopic approach has been established as the method of choice for hiatal hernioplasty, it can well be considere...
Article
INTRODUCTION: Congenital diaphragmatic hernia (CDH) in adults is a relatively rare condition being asymptomatic in the majority of cases. Symptomatic CDH should prompt surgical management because they may lead to intestinal obstruction or severe pulmonary disease. This is the first reported case of a symptomatic CDH complicated with sliding hiatal...
Article
The Pringle maneuver has its applications to minimize blood loss during hepatic resection. Splenic rupture during the Pringle maneuver in open liver surgery was described only in few cases. This is the first report of such a complication during laparoscopic surgery. A 58-year-old woman sustained major splenic capsular rupture during laparoscopic ri...
Article
Full-text available
IntroductionColorectal cancer is developed in a multi-step process. One of the characteristic features of cancer is telomerase activation. The aim of this study was to evaluate telomerase activity between cancerous and adjacent normal tissue and to identify differences in telomerase activity between different locations in colon and rectum.Methods M...
Article
Advances in operative techniques and technology have facilitated laparoscopic distal pancreatectomy (LDP) and laparoscopic pancreaticoduodenectomy (LPD). All distal pancreatectomies were attempted laparoscopically, while selected patients underwent LPD. The literature was systematically reviewed. Between 2002 and 2008, 21 patients underwent LDP (n=...
Article
Some one-fifth of patients may have accessory spleens (AcS) and require their removal at the time of splenectomy to achieve and maintain hematological response. The purpose of this study was to evaluate the benefit of computed tomography (CT) in patients undergoing laparoscopic splenectomy (LS). All patients who required splenectomy were offered LS...
Article
Full-text available
Lesser omental transection during gastric bypass for morbid obesity may be associated with postoperative dumping. A survey of postoperative symptoms was performed in patients undergoing laparoscopic Roux-en-Y gastric bypass with transection vs. preservation of the lesser omentum. A written questionnaire on dumping symptoms was administered to patie...
Article
Full-text available
The aim of this study was to evaluate the mechanisms of failure after laparoscopic fundoplication and the results of revision laparoscopic fundoplication. Laparoscopic Nissen fundoplication has become the most commonly performed antireflux procedure for the treatment of gastroesophageal reflux disease, with success rates from 90 to 95%. Persistent...
Article
Right portal vein ligation (PVL) has its recognized role in inducing hypertrophy of future liver remnant (FLR) prior to major liver resection. The aim of this study was to evaluate the safety, feasibility, and effectiveness of laparoscopic right PVL and to explore its applications. Laparoscopic right PVL was employed either during staging laparosco...
Article
The safety and efficacy of laparoscopic splenectomy in the management of benign hematologic diseases is well established. However, most consider the laparoscopic approach to splenectomy in trauma patients contraindicated. We present a 76-year-old Jehovah's Witness who sustained a blunt abdominal trauma, rib fractures, and grade III splenic injury....

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