Konstantinos Lasithiotakis

Prof. Konstantinos Lasithiotakis

Department of Surgery, Faculty of Medicine, University of Crete, Crete, Greece
orcid

Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
27 February 2008 in Cancer
Verified
Journal Article
Open access
PDF file
Konstantinos LasithiotakisKonstantinos Lasithiotakis
Konstantinos Lasithiotakis
ULUlrike Leiter
Ulrike Leiter
FMFriedegund Meier
Friedegund Meier
TEThomas Eigentler
Thomas Eigentler
GMGizela Metzler
Gizela Metzler
Claus GarbeClaus Garbe
Claus Garbe
BACKGROUND: The aim was to identify age‐ related and gender‐related differences in the clinical presentation and outcome of patients with primary cutaneous melanoma (CM).METHODS: A total of 4785 CM patients without clinical evidence of metastasis diagnosed during the period 1976–2001 in southern Germany included in the analysis. Kaplan‐Meier analyses were performed to estimate and to compare disease‐specific survival (DSS) and survival after first recurrence (SAR). The Cox proportional hazards model was used to evaluate the effect of multiple variables on DSS and SAR.RESULTS: Increasing age and male gender were independently associated with thicker tumors (>2 mm) and histologic ulceration (P < .001). Patients older than 65 years had lower 10‐year DSS than younger patients (81.8% vs 88.4%, P < .001) and this difference was more pronounced in women (P < .001) than in men (P = .06). Males had lower 10‐year DSS than females (83.5% vs 88.5%, P < .001) but this difference did not reach statistical significance in patients older than 65 years (P = .162). In multivariate analysis adjusted for tumor thickness, ulceration, anatomic site, histologic subtype, DSS, site of first recurrence, time trend, sentinel lymph node status, age, and gender were independent predictors of DSS and SAR (P < .05).CONCLUSIONS: Older age and male gender are associated with prognostically unfavorable primary CM. Expansion of current preventive strategies to target these subgroups is warranted. Moreover, age and gender are independent predictors of the outcome of CM patients. Females have a better prognosis than males but this difference disappears after the age of 65. Younger patients have a more favorable prognosis than older patients, a difference more pronounced in women. Cancer 2008. © 2008 American Cancer Society.

25 April 2022 in Hepatobiliary & Pancreatic Diseases International
Verified
Journal Article
Closed access
SKStamatios Kokkinakis
Stamatios Kokkinakis
Evangelos I. KritsotakisEvangelos I. Kritsotakis
Evangelos I. Kritsotakis
NMNeofytos Maliotis
Neofytos Maliotis
IKIoannis Karageorgiou
Ioannis Karageorgiou
ECEmmanuel Chrysos
Emmanuel Chrysos
Konstantinos LasithiotakisKonstantinos Lasithiotakis
Konstantinos Lasithiotakis

4 September 2020 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
TNTaxiarchis Konstantinos Nikolouzakis
Taxiarchis Konstantinos Nikolouzakis
Luca FalzoneLuca Falzone
Luca Falzone
Konstantinos LasithiotakisKonstantinos Lasithiotakis
Konstantinos Lasithiotakis
SKSabine Krüger-Krasagakis
Sabine Krüger-Krasagakis
AKAlexandra Kalogeraki
Alexandra Kalogeraki
JTJohn Tsiaoussis
John Tsiaoussis
Skin cancer represents the most common type of cancer among Caucasians and presents in two main forms: melanoma and non-melanoma skin cancer (NMSC). NMSC is an umbrella term, under which basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and Merkel cell carcinoma (MCC) are found along with the pre-neoplastic lesions, Bowen disease (BD) and actinic keratosis (AK). Due to the mild nature of the majority of NMSC cases, research regarding their biology has attracted much less attention. Nonetheless, NMSC can bear unfavorable characteristics for the patient, such as invasiveness, local recurrence and distant metastases. In addition, late diagnosis is relatively common for a number of cases of NMSC due to the inability to recognize such cases. Recognizing the need for clinically and economically efficient modes of diagnosis, staging, and prognosis, the present review discusses the main etiological and pathological features of NMSC as well as the new and promising molecular biomarkers available including telomere length (TL), telomerase activity (TA), CpG island methylation (CIM), histone methylation and acetylation, microRNAs (miRNAs), and micronuclei frequency (MNf). The evaluation of all these aspects is important for the correct management of NMSC; therefore, the current review aims to assist future studies interested in exploring the diagnostic and prognostic potential of molecular biomarkers for these entities.

15 July 2019 in World Journal of Emergency Surgery
Verified
Journal Article
Open access
PDF file
Massimo SartelliMassimo Sartelli
Massimo Sartelli
FAFikri M Abu-Zidan
Fikri M Abu-Zidan
FLFrancesco M. Labricciosa
Francesco M. Labricciosa
YKYoram Kluger
Yoram Kluger
ACand Federico Coccolini
and Federico Coccolini
Fausto CatenaFausto Catena
Fausto Catena
Timing and adequacy of peritoneal source control are the most important pillars in the management of patients with acute peritonitis. Therefore, early prognostic evaluation of acute peritonitis is paramount to assess the severity and establish a prompt and appropriate treatment. The objectives of this study were to identify clinical and laboratory predictors for in-hospital mortality in patients with acute peritonitis and to develop a warning score system, based on easily recognizable and assessable variables, globally accepted. This worldwide multicentre observational study included 153 surgical departments across 56 countries over a 4-month study period between February 1, 2018, and May 31, 2018. A total of 3137 patients were included, with 1815 (57.9%) men and 1322 (42.1%) women, with a median age of 47 years (interquartile range [IQR] 28–66). The overall in-hospital mortality rate was 8.9%, with a median length of stay of 6 days (IQR 4–10). Using multivariable logistic regression, independent variables associated with in-hospital mortality were identified: age > 80 years, malignancy, severe cardiovascular disease, severe chronic kidney disease, respiratory rate ≥ 22 breaths/min, systolic blood pressure < 100 mmHg, AVPU responsiveness scale (voice and unresponsive), blood oxygen saturation level (SpO2) < 90% in air, platelet count < 50,000 cells/mm3, and lactate > 4 mmol/l. These variables were used to create the PIPAS Severity Score, a bedside early warning score for patients with acute peritonitis. The overall mortality was 2.9% for patients who had scores of 0–1, 22.7% for those who had scores of 2–3, 46.8% for those who had scores of 4–5, and 86.7% for those who have scores of 7–8. The simple PIPAS Severity Score can be used on a global level and can help clinicians to identify patients at high risk for treatment failure and mortality.

10 April 2023 in Nutrients
Verified
Journal Article
Open access
PDF file
DPDimitrios Panagiotou
Dimitrios Panagiotou
EFEirini Filidou
Eirini Filidou
MGMaria Gaitanidou
Maria Gaitanidou
GTGesthimani Tarapatzi
Gesthimani Tarapatzi
MSMichael Spathakis
Michael Spathakis
Katerina KotzampassiKaterina Kotzampassi
Katerina Kotzampassi
The probiotics Lactiplantibacillus plantarum UBLP-40, Lactobacillus rhamnosus UBLR-58 and Bifidobacterium longum UBBL-64 seem to promote wound healing when applied topically. Our aim was to investigate their effect on the mRNA expression of pro-inflammatory, healing and angiogenetic factors during the healing process of a standardized excisional wound model in rats. Rats subjected to six dorsal skin wounds were allocated to Control; L. plantarum; combined formula of L. rhamnosus plus B. longum; L. rhamnosus; and B. longum treatments, applied every two days, along with tissue collection. The pro-inflammatory, wound-healing, and angiogenetic factors of mRNA expression were assessed by qRT-PCR. We found that L. plantarum exerts a strong anti-inflammatory effect in relation to L. rhamnosus–B. longum, given alone or in combination; the combined regime of L. rhamnosus–B. longum, works better, greatly promoting the expression of healing and angiogenic factors than L. plantarum. When separately tested, L. rhamnosus was found to work better than B. longum in promoting the expression of healing factors, while B. longum seems stronger than L. rhamnosus in the expression of angiogenic factors. We, therefore, suggest that an ideal probiotic treatment should definitively contain more than one probiotic strain to speed up all three healing phases.

Verified
Journal Article
Open access
PDF file
MVMaria Venianaki
Maria Venianaki
AAAlexandros Andreou
Alexandros Andreou
Taxiarchis Konstantinos NikolouzakisTaxiarchis Konstantinos Nikolouzakis
Taxiarchis Konstantinos Nikolouzakis
ECEmmanuel Chrysos
Emmanuel Chrysos
GCGeorge Chalkiadakis
George Chalkiadakis
Konstantinos LasithiotakisKonstantinos Lasithiotakis
Konstantinos Lasithiotakis
Malnutrition is associated with dismal treatment outcomes in older patients but its impact in geriatric surgery has not been studied extensively. Herein, we report the prevalence of malnutrition risk, its risk factors and its association with postoperative outcomes in older patients undergoing operations of general surgery. This is a retrospective analysis of a prospectively maintained database including patients older than 65 years who were to undergo general surgery operations between 2012 and 2017. The Malnutrition Universal Screening Tool (MUST) was used for nutritional risk. Demographics, socioeconomic data, site and magnitude of the operation, various measures of comorbidity and functional dependence as well as postoperative complications based on Clavien–Dindo classification and length of stay were recorded. There were 501 patients. A total of 28.6% of them were at intermediate malnutrition risk (MUST = 1) and 14.6% were at high malnutrition risk (MUST ≥ 2). Variables independently associated with malnutrition risk (MUST ≥ 1) were smoking (Odds Ratio, OR:1.6, p = 0.041), upper gastrointestinal (GI) tract surgery (OR:20.4, p < 0.001), hepatobiliary-pancreatic surgery (OR:3.7, p = 0.001), lower GI surgery (OR:5.2, p < 0.001) and American Society of Anesthesiologists (ASA) class III/IV (OR:2.8, p = 0.001). In the multiple regression analysis adjusted for several confounding variables, the MUST score was significantly associated with postoperative death (OR:9.1, p = 0.047 for MUST = 1 and OR:11.9, p = 0.035 for MUST score ≥ 2) and postoperative hospital stay (adjusted incidence rate ratio, 1.3, p = 0.041 for MUST = 1 and 1.7, p < 0.001 for MUST ≥ 2). Malnutrition risk was highly prevalent in this sample, particularly in patients with operations of the gastrointestinal tract, in patients with poor physical status and it was associated with postoperative mortality and length of stay.