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Katoulis AC, Damaskou V, Diamanti K, Pouliakis A, Mortaki D, Zacharatou A, Bozi E, Sgouros D, Panayiotides IG. Eyebrow involvement in frontal fibrosing alopecia: A clinicopathologic cohort study for the reversibility of hair loss. J Am Acad Dermatol 2019; 82:755-757. [PMID: 31520665 DOI: 10.1016/j.jaad.2019.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 08/29/2019] [Accepted: 09/04/2019] [Indexed: 01/06/2023]
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Spathis A, Katoulis AC, Damaskou V, Liakou AI, Kottaridi C, Leventakou D, Sgouros D, Mamantopoulos A, Rigopoulos D, Karakitsos P, Panayiotides IG. BRAF Mutation Status in Primary, Recurrent, and Metastatic Malignant Melanoma and Its Relation to Histopathological Parameters. Dermatol Pract Concept 2019; 9:54-62. [PMID: 30775150 PMCID: PMC6368075 DOI: 10.5826/dpc.0901a13] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Background BRAF mutations are a common finding in malignant melanoma (MM). Nevertheless, apart from their significance as a therapeutic target in advanced melanoma, their prognostic value is still debated. Objective To assess BRAF mutation status in primary, recurrent, or metastatic MM and its correlations with histopathological findings. Methods We analyzed 203 samples from 178 consecutive patients: 129 primary cutaneous MM, 49 metastatic and recurrent MM of unknown primary site, and 25 cases of recurrences or metastases of primary MM. BRAF mutations in exon 15 were identified with real-time polymerase chain reaction and/or direct sequencing or pyrosequencing. Histopathological examination was performed according to standard procedures. Results We observed a 42.1% prevalence of BRAF mutations at codon 600 among our patients, 84% of whom harbored the V600E mutation. Mutations showed a statistically significant increase in younger patients (P = 0.011), in ulcerated tumors (P = 0.020), and in tumors lacking solar elastosis in adjacent dermis (P = 0.008). Mutations were also more common in male patients, as well as in primary MMs of the torso, and in nonvisceral metastases, however without reaching statistical significance. Logistic regression analysis identified type and ulceration as the only significant predictors of BRAF mutation. The highest frequencies of mutated BRAF were identified in superficial spreading and nodular types, and the lowest in acral lentiginous and lentigo maligna types. In situ MM and primary dermal melanoma displayed intermediate frequencies. Conclusion Frequency of mutated BRAF is type-related and correlated with ulceration, a known adverse prognostic factor.
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Margari N, Mastorakis E, Pouliakis A, Gouloumi AR, Asimis E, Konstantoudakis S, Ieromonachou P, Panayiotides IG. Classification and regression trees for the evaluation of thyroid cytomorphological characteristics: A study based on liquid based cytology specimens from thyroid fine needle aspirations. Diagn Cytopathol 2018; 46:670-681. [DOI: 10.1002/dc.23977] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 04/04/2018] [Accepted: 05/07/2018] [Indexed: 01/21/2023]
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Parthenis C, Panagopoulos P, Margari N, Kottaridi C, Spathis A, Pouliakis A, Konstantoudakis S, Chrelias G, Chrelias C, Papantoniou N, Panayiotides IG, Tsiodras S. The association between sexually transmitted infections, human papillomavirus, and cervical cytology abnormalities among women in Greece. Int J Infect Dis 2018; 73:72-77. [PMID: 29902519 DOI: 10.1016/j.ijid.2018.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 06/04/2018] [Accepted: 06/05/2018] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE To investigate the diagnosis of sexually transmitted infections (STIs) with human papillomavirus (HPV) infection and the presence of cytological changes in the cervix in a cohort of sexually active women in Greece. METHODS Cervical cytology testing and the molecular typing of HPV and other STIs were performed for 345 sexually active women aged between 18 and 45 years (mean 33.2±7.2years) visiting a gynaecology clinic for routine cervical screening. The association of HPV and STI detection with cytological findings was investigated. RESULTS HPV was detected in 61 women (17.7%) and STIs in 82 (23.8%). Ureaplasma spp was the most frequently detected pathogen, which was found in 63 (18.2%) women, followed by Mycoplasma spp (21 women, 25.6%) and Chlamydia trachomatis (five women, 6.1%). HPV positivity only (with no co-presence of STI) was associated with an abnormal cytology (odds ratio 6.9, p<0.001), while women who were negative for both HPV and STIs had a higher probability of a normal cytology (odds ratio 0.36, p<0.01). Sixteen out of the 63 (25.4%) women who tested positive for Ureaplasma spp, harboured a high-risk HPV type (odds ratio 2.3, p=0.02). CONCLUSIONS In a population with a high prevalence of Ureaplasma spp, there was an association of this pathogen with high-risk HPV infection, a finding that needs further elucidation.
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Foukas PG, Tsiodras S, Economopoulou P, Spathis A, Mademli M, Leventakos K, Psyrri A, Karakitsos P, Panayiotides IG. Concomitant Human Herpes Virus 6 and nivolumab-related pneumonitis: Potential pathogenetic insights. IDCases 2018; 11:101-103. [PMID: 29552493 PMCID: PMC5852387 DOI: 10.1016/j.idcr.2018.01.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 01/29/2018] [Accepted: 01/29/2018] [Indexed: 12/12/2022] Open
Abstract
The development of immune system modulating agents, such as immune checkpoint inhibitors (ICIs), has revolutionized cancer treatment. Nivolumab, a human monoclonal antibody against PD-1, has emerged as an efficient treatment for various malignancies, including non-small cell lung cancer (NSCLC); however, it is associated with important immune related side-effects, attributed to organ-specific inflammation, such as immune-mediated pneumonitis, a relatively uncommon, albeit potentially fatal adverse event. We herein present the unique case of severe interstitial pneumonitis with concomitant detection of Human Herpes Virus 6 (HHV-6) in a nivolumab treated patient with NSCLC. Potential pathogenetic mechanisms are discussed.
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Margari N, Giovannopoulos I, Pouliakis A, Mastorakis E, Gouloumi AR, Panayiotides IG, Karakitsos P. Application of Immunocytochemistry on Cell Block Sections for the Investigation of Thyroid Lesions. Acta Cytol 2018; 62:137-144. [PMID: 29339640 DOI: 10.1159/000485824] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 11/29/2017] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To investigate the potential of Classification and Regression Trees (CARTs) for the diagnosis of thyroid lesions based on cell block immunocytochemistry and cytological outcome. STUDY DESIGN A total of 956 histologically confirmed cases (673 benign and 283 malignant) from patients with thyroid nodules were prepared via liquid-based cytology and evaluated; 4 additional slides were stained for cytokeratin 19 (CK-19), galectin 3 (Gal-3), Hector Battifora mesothelial cell 1 (HBME-1), and thyroglobulin. On the basis of immunocytochemistry and the cytological diagnosis, a CART algorithm was constructed and used for evaluation. RESULTS The major important factors contributing to the diagnostic CART model were: cytological outcome, CK-19, Gal-3, and HBME-1. The sensitivity and specificity of the cytological diagnosis were 96.27% and 88.26%, respectively (cut-off: category 3 of The Bethesda System [TBS-3]). The introduction of immunocytochemistry and the CART model increased the sensitivity and specificity to 98.88% and 99.11%, respectively. CK-19 presented the best performance for discriminating papillary thyroid carcinomas, followed by HBME-1 and Gal-3. In the TBS-2 cases, CK-19 and, subsequently, Gal-3 were important immunocytochemistry markers. Ultimately, CK-19 and HBME-1 on TBS-5 or TBS-6 cases demonstrated the best results. CONCLUSIONS The hierarchical structure of the CART model provides a diagnostic algorithm linked with the risk of malignancy at every step of the procedure. It also provides guidance on the use of ancillary examinations as it goes by simple, human understandable rules.
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Gatos-Gatopoulos P, Kostantoudakis S, Panayiotides IG, Dimitriadis GD, Triantafyllou K. Embolia cutis medicamentosa: an unusual adverse reaction to terlipressin. Ann Gastroenterol 2017; 30:700-703. [PMID: 29118569 PMCID: PMC5670294 DOI: 10.20524/aog.2017.0158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 04/18/2017] [Indexed: 11/11/2022] Open
Abstract
Terlipressin is a synthetic long-acting analog of vasopressin widely used to control variceal bleeding by lowering portal venous pressure. We report an unusual adverse reaction to terlipressin in a 78-year-old patient with esophageal variceal bleeding who developed skin necrosis soon after treatment initiation. Skin biopsy revealed embolia cutis medicamentosa.
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Ntavatzikos A, Spathis A, Patapis P, Machairas N, Peros G, Konstantoudakis S, Leventakou D, Panayiotides IG, Karakitsos P, Koumarianou A. Integrating TYMS, KRAS and BRAF testing in patients with metastatic colorectal cancer. World J Gastroenterol 2017; 23:5913-5924. [PMID: 28932083 PMCID: PMC5583576 DOI: 10.3748/wjg.v23.i32.5913] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/22/2017] [Accepted: 07/24/2017] [Indexed: 02/07/2023] Open
Abstract
AIM To investigate the impact of thymidylate synthase (TYMS), KRAS and BRAF in the survival of metastatic colorectal cancer (mCRC) patients treated with chemotherapy.
METHODS Clinical data were collected retrospectively from records of consecutive patients with mCRC treated with fluoropyrimidine-based chemotherapy from 1/2005 to 1/2007. Formalin-fixed paraffin-embedded tissues were retrieved for analysis. TYMS genotypes were identified with restriction fragment analysis PCR, while KRAS and BRAF mutation status was evaluated using real-time PCR assays. TYMS gene polymorphisms of each of the 3’ untranslated region (UTR) and 5’UTR were classified into three groups according to the probability they have for high, medium and low TYMS expression (and similar levels of risk) based on evidence from previous studies. Univariate and multivariate survival analyses were performed.
RESULTS The analysis recovered 89 patients with mCRC (46.1% de novo metastatic disease and 53.9% relapsed). Of these, 46 patients (51.7%) had colon cancer and 43 (48.3%) rectal cancer as primary. All patients were treated with fluoropyrimidine-based chemotherapy (5FU or capecitabine) as single-agent or in combination with irinotecan or/and oxaliplatin or/and bevacizumab. With a median follow-up time of 14.8 mo (range 0-119.8), 85 patients (95.5%) experienced disease progression, and 63 deaths (70.8%) were recorded. The 3-year and 5-year OS rate was 25.4% and 7.7% while the 3-year progression-free survival rate was 7.1%. Multivariate analysis of TYMS polymorphisms, KRAS and BRAF with clinicopathological parameters indicated that TYMS 3’UTR polymorphisms are associated with risk for disease progression and death (P < 0.05 and P < 0.03 respectively). When compared to tumors without any del allele (genotypes ins/ins and ins/loss of heterozygosity (LOH) linked with high TYMS expression) tumors with del/del genotype (low expression group) and tumors with ins/del or del/LOH (intermediate expression group) have lower risk for disease progression (HR = 0.432, 95%CI: 0.198-0.946, P < 0.04 and HR = 0.513, 95%CI: 0.287-0.919, P < 0.03 respectively) and death (HR = 0.366, 95%CI: 0.162-0.827, P < 0.02 and HR = 0.559, 95%CI: 0.309-1.113, P < 0.06 respectively). Additionally, KRAS mutation was associated independently with the risk of disease progression (HR = 1.600, 95%CI: 1.011-2.531, P < 0.05). The addition of irinotecan in 1st line chemotherapy was associated independently with lower risk for disease progression and death (HR = 0.600, 95%CI: 0.372-0.969, P < 0.04 and HR = 0.352, 95%CI: 0.164-0.757, P < 0.01 respectively).
CONCLUSION The TYMS genotypes ins/ins and ins/LOH associate with worst prognosis in mCRC patients under fluoropyrimidine-based chemotherapy. Large prospective studies are needed for validation of our findings.
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Papanikolaou IS, Gkolfakis P, Tziatzios G, Grammatikos K, Panayiotides IG, Tsakiraki Z, Zinovieva I, Dimitriadis GD, Triantafyllou K. An unusual cause of acute lower gastrointestinal bleeding: lung adenocarcinoma metastasis to the descending colon. Clin Case Rep 2017; 5:1411-1413. [PMID: 28781870 PMCID: PMC5538060 DOI: 10.1002/ccr3.1039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 04/28/2017] [Accepted: 05/19/2017] [Indexed: 11/17/2022] Open
Abstract
Lung adenocarcinoma with symptomatic GI metastasis occurs seldom in everyday clinical practice. However, as diagnostic modalities, therapeutic interventions, and supportive care for cancer evolve, it is likely that the clinician might encounter a number of similar cases in the future, and therefore, he should be aware of this rare entity.
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Triantafyllou K, Papadopoulos V, Emanouil T, Gkolfakis P, Damaskou V, Tziatzios G, Panayiotides IG, Vafiadis I, Ladas SD. Eradication of Helicobacter pylori Infection Restores ki67, p53, and Cyclin D1 Immunoreactivity in the Human Gastric Epithelium. CLINICAL MEDICINE INSIGHTS. GASTROENTEROLOGY 2016; 9:73-78. [PMID: 27891056 PMCID: PMC5117488 DOI: 10.4137/cgast.s38330] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 07/31/2016] [Accepted: 08/03/2016] [Indexed: 11/24/2022]
Abstract
INTRODUCTION We evaluated the effect of Helicobacter pylori (HP) eradication on p53, cyclin D1 expression, and cell proliferation in gastric mucosa. MATERIALS AND METHODS We assessed p53, cyclin D1, and ki67 immunoexpression in gastric mucosa from 31 HP chronic gastritis patients and 12 controls. Reassessment was performed 6 months after successful HP eradication. RESULTS Successful eradication resulted in significant decrease of p53 (1.53 ± 0.16 vs 0.83 ± 0.19, P = 0.01) and ki67 (9.84 ± 0.96 vs 4.77 ± 0.27, P < 0.001) staining in the antrum. Similarly, p53 immunoreactivity significantly decreased in the corpus (1.27 ± 0.20 vs 0.46 ± 0.15, P = 0.02), while there was a trend for decreased corpus cyclin D1 and ki67 expression (0.17 ± 0.07 vs 0.0, P = 0.08 and 8.71 ± 1.24 vs 5.85 ± 0.54, P = 0.09, respectively). Importantly, after successful HP eradication, the immunoreactivity of the studied parameters was similar to that of controls. CONCLUSION Successful HP infection eradication restores p53, cyclin D1, and ki67 immunoreactivity in the gastric mucosa to the level of controls.
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Papageorgiou SG, Kontos CK, Foukas PG, Panopoulou E, Vasilatou D, Rapti SM, Gkontopoulos K, Bazani E, Panayiotides IG, Dimitriadis G, Scorilas A, Pappa V. BCL2L12 protein overexpression is associated with favorable outcome in diffuse large B-cell lymphoma patients in the rituximab era. Leuk Lymphoma 2016; 57:2199-203. [PMID: 27442703 DOI: 10.3109/10428194.2015.1126588] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Xirotagaros G, Drogari-Apiranthitou M, Panayiotides IG, Tsakiraki Z, Tsamakis C, Theotokoglou S, Tofas P, van Diepeningen AD, de Hoog GS, Petrikkos G, Rigopoulos D. Imported lymphocutaneous sporotrichosis in Greece. Br J Dermatol 2015; 173:291-3. [PMID: 25421871 DOI: 10.1111/bjd.13558] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Drogari‐Apiranthitou M, Panayiotides IG, Mastoris I, Theodoropoulos K, Gouloumi A, Hagen F, Tofas P, Chrisofos M, Tsiodras S, Petrikkos G. Primary cutaneous cryptococcosis and a surprise finding in a chronically immunosuppressed patient. JMM Case Rep 2014. [DOI: 10.1099/jmmcr.0.003426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Tsiodras S, Poulakou G, Leventakos K, Panopoulou H, Elezoglou A, Manoloudaki K, Chrisofos M, Petrikkos G, Panayiotides IG. 'Prostate Abscess' as the Initial Manifestation of Granulomatosis with Polyangiitis (Wegener's Granulomatosis). Urol Int 2014; 96:244-6. [PMID: 25138619 DOI: 10.1159/000363113] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 04/23/2014] [Indexed: 11/19/2022]
Abstract
Prostatic involvement in granulomatosis with polyangiitis (GWP), formerly known as Wegener's granulomatosis, is rare, mostly arising in the context of systemic involvement. Prostatic involvement as the first manifestation of this systemic disease is exceptionally rare. We hereby present the case of a 41-year-old male patient who underwent transurethral prostate resection for what was initially diagnosed as suppurative, focally necrotizing prostatitis. Prolonged postoperative fever that did not respond to various treatments, as well as the subsequent appearance of a left pleural effusion, a left upper pulmonary lobe lesion and cutaneous nodules, led to a reevaluation of histological slides which, along with the determination of serum c-ANCA/anti-PR3 antibody levels, established the diagnosis of GWP. Physicians, and especially urologists and infectious diseases specialists, should be aware of this rare association and consider GWP in the event of nonresolving prostatitis, especially when characteristic symptoms from other systems appear.
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Sioulas VD, Panayiotides IG, Chrelias C, Grammatikakis I, Vaggopoulos V, Kefala M, Kassanos D. Ovarian melanoma complicating pregnancy achieved by in-vitro fertilisation. J OBSTET GYNAECOL 2014; 33:89-91. [PMID: 23259897 DOI: 10.3109/01443615.2012.727502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kefala M, Papageorgiou SG, Kontos CK, Economopoulou P, Tsanas A, Pappa V, Panayiotides IG, Gorgoulis VG, Patsouris E, Foukas PG. Increased expression of phosphorylated NBS1, a key molecule of the DNA damage response machinery, is an adverse prognostic factor in patients with de novo myelodysplastic syndromes. Leuk Res 2013; 37:1576-82. [PMID: 24054861 DOI: 10.1016/j.leukres.2013.08.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 08/22/2013] [Accepted: 08/25/2013] [Indexed: 01/02/2023]
Abstract
The expression of activated forms of key proteins of the DNA damage response machinery (pNBS1, pATM and γH2AX) was assessed by means of immunohistochemistry in bone marrow biopsies of 74 patients with de novo myelodysplastic syndromes (MDS) and compared with 15 cases of de novo acute myeloid leukemia (AML) and 20 with reactive bone marrow histology. Expression levels were significantly increased in both MDS and AML, compared to controls, being higher in high-risk than in low-risk MDS. Increased pNBS1 and γH2AX expression possessed a significant negative prognostic impact for overall survival in MDS patients, whereas pNBS1 was an independent marker of poor prognosis.
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Rallis D, Tsirigotis P, Arvaniti C, Sgouros S, Foukas PG, Oikonomopoulos N, Andronas N, Panayiotides IG, Kouloulias V, Papageorgiou S, Voumvourakis K, Stamboulis E. Clinical reasoning: a 51-year-old man with cervical pain and progressively deteriorating gait. Neurology 2013; 80:e230-4. [PMID: 23713091 DOI: 10.1212/wnl.0b013e318294b2bf] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A 51-year-old Caucasian man presented with cervical pain, right hand weakness, and progressively deteriorating gait. Onset of symptoms occurred 1 month before admission with cervical pain that worsened during neck flexion. A few days later he noticed reduced dexterity and numbness of his right hand. During the following 3 weeks, his gait became increasingly unstable. Additionally, he reported erectile dysfunction and urinary hesitancy. No previous trauma was recalled. His medical and family history was unremarkable except for hypertension that was treated with angiotensin-converting enzyme inhibitors.
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Sioulas AD, Panayiotides IG, Kavatha D, Foukas PG, Antonakos N, Triantafyllou K. A rare case of dysphagia in a severely immunocompromised patient. Arch Med Sci 2013; 9:381-3. [PMID: 23671454 PMCID: PMC3648814 DOI: 10.5114/aoms.2012.31254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 02/15/2012] [Accepted: 02/19/2012] [Indexed: 11/17/2022] Open
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Hountis P, Foukas PG, Matthaios D, Kefala M, Chelis L, Pantelidaki A, Panayiotides IG, Karakitsos P, Kakolyris S. Prognostic significance of different immunohistochemical S100A2 protein expression patterns in patients with operable nonsmall cell lung carcinoma. Onco Targets Ther 2012. [PMID: 23189031 PMCID: PMC3507318 DOI: 10.2147/ott.s36474] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
S100 proteins are involved in carcinogenesis, metastasis, and survival. S100A2 is a member of the S100 family, and its expression and precise role in patients with non-small cell lung carcinoma (NSCLC) has been debated. Therefore, we examined the immunohistochemical expression patterns of S100A2 in NSCLC in relation to clinicopathological parameters, important molecular biomarkers, and patient outcome. Microarray data for 74 paraffin-embedded specimens from patients with NSCLC were immunostained for S100A2 and p53 proteins. Immunohistochemical staining patterns of S100A2 in the NSCLC tissue samples examined were either nuclear (nS100A2), cytoplasmic (cS100A2), or both. A significant association between nS100A2 positivity and better disease-free interval was observed (hazards ratio 0.47; 95% confidence interval 0.23–0.99; P = 0.047). Similarly, cS100A2 negativity was marginally associated with shorter overall survival (P = 0.07). Patients without lymphatic infiltration and an earlier disease stage had significantly better overall survival and disease-free interval. The S100A2 expression pattern in operable NSCLC varies widely, and this differential expression (nuclear, cytoplasmic or both) seems to correlate with prognosis. Intensity of expression was highest in the early and advanced stages, and equally distributed in the middle stages. This observation may be indicative of a dual role for this protein both during earlier and advanced disease stages, and may also explain the differential immunoexpression of S100A2. Analysis of the disease-free interval showed that nS100A2-negative and p53-positive expression was associated with a statistically significant (P = 0.003) shorter disease-free interval in comparison with nS100A2-positive and p53-negative expression (12 versus 30 months, respectively). Further studies are required to establish whether S100A2 protein may have a substantial role as a prognostic or predictive indicator in this unfavorable group of patients.
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Spathis A, Kottaridi C, Chranioti A, Meristoudis C, Chrelias C, Panayiotides IG, Paraskevaidis E, Karakitsos P. mRNA and DNA detection of human papillomaviruses in women of all ages attending two colposcopy clinics. PLoS One 2012; 7:e49205. [PMID: 23166611 PMCID: PMC3499555 DOI: 10.1371/journal.pone.0049205] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2012] [Accepted: 10/07/2012] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE HPV infection is a common finding, especially in young women while the majority of infections are cleared within a short time interval. The aim of this study was to examine the efficacy of HPV DNA and mRNA testing in a population attending colposcopy units of two University hospitals. METHODS 1173 liquid based cervical samples from two colposcopy clinics were tested for HPV DNA positivity using a commercial typing kit and HPV E6/E7 mRNA positivity with a flow cytometry based commercial kit. Statistic measures were calculated for both molecular tests and morphological cytology and colposcopy diagnosis according to histology results. RESULTS HPV DNA, high-risk HPV DNA, HPV16 or 18 DNA and HPV mRNA was detected in 55.5%, 50.6%, 20.1% and 29.7% of the cervical smears respectively. Concordance between the DNA and the mRNA test was 71.6% with their differences being statistically significant. Both tests' positivity increased significantly as lesion grade progressed and both displayed higher positivity rates in samples from women under 30 years old. mRNA testing displayed similar NPV, slightly lower sensitivity but significantly higher specificity and PPV than DNA testing, except only when DNA positivity for either HPV16 or 18 was used. CONCLUSIONS Overall mRNA testing displayed higher clinical efficacy than DNA testing, either when used as a reflex test or as an ancillary test combined with morphology. Due to enhanced specificity of mRNA testing and its comparable sensitivity in ages under 25 or 30 years old, induction of mRNA testing in young women could be feasible if a randomized trial verifies these results.
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Matthaios D, Foukas PG, Kefala M, Hountis P, Trypsianis G, Panayiotides IG, Chatzaki E, Pantelidaki E, Bouros D, Karakitsos P, Kakolyris S. γ-H2AX expression detected by immunohistochemistry correlates with prognosis in early operable non-small cell lung cancer. Onco Targets Ther 2012. [PMID: 23180966 PMCID: PMC3501397 DOI: 10.2147/ott.s36995] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Phosphorylation of the H2AX histone is an early indicator of DNA double-strand breaks and of the resulting DNA damage response. In the present study, we assessed the expression and prognostic significance of γ-H2AX in a cohort of 96 patients with operable non-small cell lung carcinoma. Methods Ninety-six paraffin-embedded specimens of non-small cell lung cancer patients were examined. All patients underwent radical thoracic surgery of primary tumor (lobectomy or pneumonectomy) and regional lymph node dissection. γ-H2AX expression was assessed by standard immunohistochemistry. Follow-up was available for all patients; mean duration of follow-up was 27.50 ± 14.07 months (range 0.2–57 months, median 24 months). Results Sixty-three patients (65.2%) died during the follow-up period. The mean survival time was 32.2 ± 1.9 months (95% confidence interval [CI]: 28.5–35.8 months; median 30.0 months); 1-, 2- and 3-year survival rates were 86.5% ± 3.5%, 57.3% ± 5.1%, and 37.1% ± 5.4%, respectively. Low γ-H2AX expression was associated with a significantly better survival as compared with those having high γ-H2AX expression (35.3 months for low γ-H2AX expression versus 23.2 months for high γ-H2AX expression, P = 0.009; hazard ratio [HR] 1.95, 95% CI: 1.15–3.30). Further investigation with multivariate Cox proportional hazards regression analysis revealed that high expression of γ-H2AX remained an independent prognostic factor of shorter overall survival (HR 2.15, 95% CI: 1.22–3.79, P = 0.026). A combined p53/γ-H2AX analysis was performed, and we found that the p53 low/γ-H2AX low phenotype was associated with significantly better survival compared with all other phenotypes. Conclusion Our study is the first to demonstrate that expression of γ-H2AX detected by immunohistochemistry may represent an independent prognostic indicator of overall survival in patients with non-small cell lung cancer. Further studies are needed to confirm our results.
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Argyropoulos T, Foukas P, Kefala M, Xylardistos P, Papageorgiou S, Machairas N, Boltetsou E, Machairas A, Panayiotides IG. Simultaneous occurrence of colonic adenocarcinoma and MALT lymphoma: A series of three cases. World J Gastrointest Oncol 2012; 4:89-93. [PMID: 22532883 PMCID: PMC3334386 DOI: 10.4251/wjgo.v4.i4.89] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 01/14/2012] [Accepted: 01/25/2012] [Indexed: 02/05/2023] Open
Abstract
Simultaneous development of adenocarcinoma and primary B cell lymphoma of mucosa-associated lymphoid tissue (MALT) lymphoma of the colon is rare; only one case has so far been reported out of 13 cases with the coexistence of colonic adenocarcinoma with involvement of the colon by lymphoma. We hereby present three more cases, two females (aged 75 and 71 years) and a male (aged 72 years). All three underwent colectomy based on a preoperative biopsy revealing colonic carcinoma. Histological examination of the resection specimens disclosed a colonic adenocarcinoma in two cases, whereas a tubulovillous adenoma with superficial foci of intraepithelial adenocarcinoma was seen in the third case. Moreover, in all three cases, a coexisting MALT lymphoma was diagnosed in the colon (1 case), in both colon and adjacent lymph nodes (1 case) or in colonic lymph nodes and omentum (1 case). In the last case, a post-operative bone marrow biopsy revealed extensive infiltration of the bone marrow, due to which the patient received postoperative chemotherapy. Diagnostic and treatment issues are briefly discussed.
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Papanikolaou IS, Foukas PG, Sioulas A, Beintaris I, Panagopoulos P, Karamanolis G, Panayiotides IG, Dimitriadis G, Triantafyllou K. A case of gastric ischemic necrosis. Endoscopy 2012; 43 Suppl 2 UCTN:E342. [PMID: 22020717 DOI: 10.1055/s-0030-1256795] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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Foukas PG, Kefala M, Papageorgiou S, Tsirigotis P, Panayiotidis P, Korkolopoulou P, Spathis A, Dervenoulas J, Patsouris E, Karakitsos P, Panayiotides IG. CD20 expression in angioimmunoblastic T cell lymphoma. Leuk Lymphoma 2011; 53:345-7. [DOI: 10.3109/10428194.2011.602768] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Samaras VD, Foukas PG, Triantafyllou K, Leontara V, Tsapralis D, Tsompanidi EM, Machairas A, Panayiotides IG. Synchronous well differentiated neuroendocrine tumour and gastrointestinal stromal tumour of the stomach: a case report. BMC Gastroenterol 2011; 11:27. [PMID: 21435225 PMCID: PMC3070680 DOI: 10.1186/1471-230x-11-27] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Accepted: 03/24/2011] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Well differentiated neuroendocrine tumours (carcinoids), arising from cells of the diffuse neuroendocrine system, represent the most commonly encountered gastric endocrine tumours. Gastrointestinal stromal tumours (GISTs), which stem from interstitial Cajal cells located within the wall of the gastrointestinal tract and have a characteristic immunoreactivity for CD117 (c-kit protein), account for the majority of gastrointestinal mesenchymal neoplasms. Simultaneous occurrence of a GIST with a well differentiated neuroendocrine tumour in the stomach is very rare. METHODS Clinical history, endoscopy and histopathological findings were utilized for our diagnostic considerations. RESULTS We report the coexistence of a high risk GIST with a well differentiated neuroendocrine tumour of benign clinical behavior, both located in the stomach, in a 62-year-old man previously operated for a gastric well differentiated neuroendocrine tumour with uncertain malignant behaviour. CONCLUSIONS Even single well differentiated, sporadic, NETs of small size may coexist with GISTs. An appropriate initial therapeutic approach combined with a scrupulous follow-up seems to play a significant role in terms of preventing a metastatic disease.
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