Georgios Petrakis

ORCID: 0000-0002-8822-0141
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About
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Research Areas
  • Marine and fisheries research
  • Fish Biology and Ecology Studies
  • Lymphoma Diagnosis and Treatment
  • Marine Bivalve and Aquaculture Studies
  • Pancreatic and Hepatic Oncology Research
  • Fish Ecology and Management Studies
  • Breast Lesions and Carcinomas
  • Tumors and Oncological Cases
  • Bone health and treatments
  • Pancreatitis Pathology and Treatment
  • Neuroendocrine Tumor Research Advances
  • Identification and Quantification in Food
  • Medical Imaging and Pathology Studies
  • Prostate Cancer Treatment and Research
  • Breast Cancer Treatment Studies
  • Reproductive System and Pregnancy
  • Chronic Lymphocytic Leukemia Research
  • Crustacean biology and ecology
  • Gastrointestinal Tumor Research and Treatment
  • Breast Implant and Reconstruction
  • Coastal and Marine Management
  • Endometriosis Research and Treatment
  • Marine Ecology and Invasive Species
  • Neurofibromatosis and Schwannoma Cases
  • Urinary and Genital Oncology Studies

Aristotle University of Thessaloniki
2011-2024

AHEPA University Hospital
2018-2024

Chania General Hospital ”St. George”
2022-2024

Collaborative Group (United States)
2023

Universitat de Barcelona
2019

Democritus University of Thrace
2006-2017

Hellenic Centre for Marine Research
1990-2013

In the present study, we compared size selectivity of 14 mm (knot-to-knot) diamond-shaped codend (14D), presently used in Hellenic waters, with those 20 square-shaped (20S) and (20D) codends for four commercially important demersal species (Merluccius merluccius, Micromesistius poutassou, Trisopterus minutus capelanus Lepidorhombus boscii ). Codend was estimated using covered method. Our results suggested that 14D not selective any target proportion retained by ranged between 0.88 1....

10.1006/jmsc.1996.0172 article EN ICES Journal of Marine Science 1997-02-01

Data from the Scottish participation in International Young Fish Survey for period 1976–1993 were analysed to examine effect of light level and depth on catch rates. The species selected this study common dab, herring, haddock whiting. Differences between day night observed juvenile dab herring adult haddock. shallow deep water juveniles all adults mean lengths composition whiting catches affected by both depth, indicating behaviour differences these species. Whilst seems have no length...

10.1006/jmsc.2000.0989 article EN ICES Journal of Marine Science 2001-02-01

Our aim was to evaluate the concordance between Myriad MyChoice and two alternative homologous recombination deficiency (HRD) assays (AmoyDx HRD Focus NGS Panel OncoScan™) in patients with epithelial ovarian cancer (EOC). Tissue samples from 50 newly diagnosed EOC known status were included. DNA aliquots tumor samples, previously evaluated centrally reassessed, distributed laboratories assess their using platforms, after being blinded for CDx status. The primary endpoint each assay. Tumor an...

10.3390/cancers15235525 article EN Cancers 2023-11-22

The population dynamics, growth, and reproduction of the deep-water pandalid shrimp Plesionika martia were studied in eastern Mediterranean Sea. Samples collected monthly (July 1999–June 2000) at a depth range |$440 - 600\;{\rm{m}}$| between Zakynthos Island Peloponnissos (eastern Ionian Sea, Greece). Additional samples taken April May 2001. Size-frequency distribution revealed that mean female size consistently exceeded males throughout year (CL range: |$8 23.5\;{\rm{mm}}$| |$9.3...

10.1651/c-2513 article EN Journal of Crustacean Biology 2005-01-01

A total of 399 parrot fishes (Sparisoma cretense) were collected by trammel bottom nets between April 1985 and October 1986 off Kastellorizo Island (Dodecanese, Greece). The measured, sexed aged, to determine some population parameters, such as growth, mortality exploitation rate. One check mark per year occurring during spring was found on the scales. relationship scale radius fish length plotted linear description chosen for back-calculation length. No significant difference in sexes. Most...

10.1111/j.1439-0426.1990.tb00497.x article EN Journal of Applied Ichthyology 1990-04-01

Abstract The purpose of this paper is to provide the first detailed data concerning diet and feeding activity giant red shrimp, Aristaeomorpha foliacea , in Eastern Ionian Sea (Eastern Mediterranean), relation season, size class sex. Feeding A . was intense, based on its low vacuity index high prey diversity, with a dominated by mesopelagic less frequent occurrence benthic taxa. Giant shrimp displayed highly diversified that exhibited slight seasonal fluctuations. diets both sexes consisted...

10.1111/j.1439-0485.2009.00344.x article EN Marine Ecology 2010-01-18

Aims Mantle cell lymphoma (MCL) is a heterogeneous disease with an aggressive behaviour in most cases, which associated expression of sex determining region‐Y‐box11 (SOX11). Experimental studies have shown that SOX11 angiogenic switch characterised by increased angiogenic‐related signatures and vascularisation murine tumours. However, the relationship between angiogenesis primary tumours not well understood. Therefore, aim this study was to evaluate development microvascular MCL relation its...

10.1111/his.13935 article EN Histopathology 2019-06-07

Abstract Subset #201 is a clinically indolent subgroup of patients with chronic lymphocytic leukemia defined by the expression stereotyped, mutated IGHV4-34/IGLV1-44 BCR Ig. characterized recurrent somatic hypermutations (SHMs) that frequently lead to creation and/or disruption N-glycosylation sites within Ig H and L chain variable domains. To understand relevance this observation, using next-generation sequencing, we studied how SHM shapes subclonal architecture repertoire in subset #201,...

10.4049/jimmunol.2300330 article EN The Journal of Immunology 2023-07-19

Key Clinical Message Atypical parathyroid tumors represent a group of neoplasms uncertain malignant potential. In view preoperative diagnostic difficulties, suspicious features for malignancy may guide the surgeon to perform radical surgical approach.

10.1002/ccr3.8753 article EN cc-by-nc-nd Clinical Case Reports 2024-04-01

The feeding habits of the three most abundant gurnard species, red (Aspitrigla cuculus), large scale (Lepidotrigla cavillone) and rock (Trigloporus lastoviza) in eastern Mediterranean (Dodecanese Cyclades, Greece) are examined. stomach contents specimens collected April September 1996 by bottom trawling were analyzed. % frequency occurrence, number weight prey types evaluated. By weight, Mysidacea Decapoda dominated diet species both seasons, however Index Relative Importance, as well...

10.12681/mms.280 article EN Mediterranean Marine Science 2000-06-01

The present study concerns faunal composition and distribution of cephalopods in the southern Aegean Sea (35Ζ 13’ 19’’- 37Ζ 55’ 25’’ N, 23Ζ 00’ 15’’ - 28Ζ 15’ 37’’ E). Samples were collected from 708 hauls, obtained by an experimental bottom trawl net during eight surveys carried out summers years 1994-2001, as well commercial four September 1995, December May 1996. hauls performed at depths ranging 16 to 778 m. A total 34 species cephalopod 12 families identified, including 11 oegopsid...

10.12681/mms.243 article EN Mediterranean Marine Science 2003-06-01
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