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Fortini P, Pascucci B, Parlanti E, D'Errico M, Simonelli V, Dogliotti E. The base excision repair: mechanisms and its relevance for cancer susceptibility. Biochimie 2004; 85:1053-71. [PMID: 14726013 DOI: 10.1016/j.biochi.2003.11.003] [Citation(s) in RCA: 163] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Base damage or loss occurs at high frequency in the cells (almost 10(4) bases are damaged and hydrolysed per cell per day). DNA repair is fundamental to maintain genomic integrity. Base excision repair (BER) is the main mechanism by which cells correct various types of damaged DNA bases generated either by endogenous or exogenous factors. The widely accepted model for BER mechanism involves five sequential reactions: (i) base removal; (ii) incision of the resulting abasic site; (iii) processing of the generated termini at the strand break; (iv) DNA synthesis, and (v) ligation. In this review, we will briefly summarise the biochemistry of each BER step and will concentrate on the biological relevance of BER as inferred from in vitro and in vivo studies. This information will be the basis for speculation on the potential role of malfunction of BER in human pathology.
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Review |
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Fortini P, Pascucci B, Parlanti E, D'Errico M, Simonelli V, Dogliotti E. 8-Oxoguanine DNA damage: at the crossroad of alternative repair pathways. Mutat Res 2004; 531:127-39. [PMID: 14637250 DOI: 10.1016/j.mrfmmm.2003.07.004] [Citation(s) in RCA: 147] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Radical oxygen species (ROS) generate various modified DNA bases. Among them 8-oxo-7,8-dihydroguanine (8oxoG) is the most abundant and seems to play a major role in mutagenesis and in carcinogenesis. 8oxoG is removed from DNA by the specific glycosylase OGG1. An additional post-replication repair is needed to correct the 8oxoG/A mismatches that are produced by persistent 8oxoG residues. This review is focused on the mechanisms of base excision repair (BER) of this oxidized base. It is shown that, in vitro, efficient and complete repair of 8oxoG/C pairs requires a core of four proteins, namely OGG1, APE1, DNA polymerase (Pol) beta, and DNA ligase I. Repair occurs predominantly by one nucleotide replacement reactions (short-patch BER) and Pol beta is the polymerase of election for the resynthesis step. However, alternative mechanisms can act on 8oxoG residues since Pol beta-null cells are able to repair these lesions. 8oxoG/A mismatches are repaired by human cell extracts via two BER events which occur sequentially on the two strands. The removal of the mismatched adenine is followed by preferential insertion of a cytosine leading to the formation of 8oxoG/C pairs which are then corrected by OGG1-mediated BER. Both repair events are inhibited by aphidicolin, suggesting that a replicative DNA polymerase is involved in the repair synthesis step. We propose that Pol delta/epsilon-mediated BER (long-patch BER) is the mode of repair when lesions persist or are formed at replication. Finally, we address the issues of the relative contribution of the two BER pathways to oxidative damage repair in vivo and the possible role of BER gene variants as cancer susceptibility genes.
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Review |
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147 |
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Dessily M, Dziubeck M, Chahidi E, Simonelli V. The SiLaC procedure for pilonidal sinus disease: long-term outcomes of a single institution prospective study. Tech Coloproctol 2019; 23:1133-1140. [PMID: 31773347 DOI: 10.1007/s10151-019-02119-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 11/06/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND In 2014, we started to treat pilonidal sinus disease in our institution with sinus laser-assisted closure (SiLaC) procedure. The aim of the present study was to evaluate the safety and efficacy of the SiLaC procedure in a single institution prospective study on a large cohort of patients and with a long follow-up period, and try to determine what factors that could influence healing and recurrence. METHODS A prospective study was conducted on consecutive patients with primary pilonidal sinus disease operated on with the SiLaC procedure at our institution from March 2015 to August 2017. Demographic and surgical data, outcomes, and complications were prospectively recorded and compared between the healed and not healed/recurrence groups to find factors influencing healing. Postoperative follow-up was performed in the outpatient clinic every 2 weeks for 2 months. In March 2018, patients were questioned by mail or phone to assess long-term recurrences. RESULTS There were 200 patients. The healing rate was high (94%) with a mean healing time of 19.5 ± 14.4 days. Mean operative time (9.4 ± 2.6 min) and mean duration of postoperative analgesic therapy (4.72 ± 5.64 days) were short. Postoperative complications (15%) were mainly infection (9.5%). There was a response rate of 77.5% to mail/phone questionnaires about recurrence. The recurrence rate was 14.9%. Mean time until recurrence was 193.5 ± 87.19 days. The incidence of secondary openings, complications, and infection in the healing vs not healed or recurrence groups, was 24.8% vs 56.6%, 19.2% vs 40%, and 8.8% vs 30%, respectively. CONCLUSIONS SiLaC is an effective, easy to perform, reproducible, and almost painless procedure. Factors influencing healing seem to be the presence of secondary openings, postoperative complications, and, especially, infection. The SiLaC procedure could become one of the treatments of choice for pilonidal sinus disease.
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Journal Article |
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Simonelli V, Goergen M, Orlando GG, Arru L, Zolotas CA, Geeroms M, Poulain V, Azagra JS. Fast-Track in Bariatric and Metabolic Surgery: Feasibility and Cost Analysis Through a Matched-Cohort Study in a Single Centre. Obes Surg 2017; 26:1970-7. [PMID: 27272321 DOI: 10.1007/s11695-016-2255-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Due to the rise in severe obesity in Western countries and the increase in bariatric surgery, enhanced recovery (ER) pathways should be developed and promoted. METHODS A monocentric prospective series of 103 bariatric surgery patients managed with the ER pathway (group ER) was compared with a retrospective and immediately previous series of 103 patients managed with standard care (group CS). The aim of the present study was to assess and compare the differences in terms of mean postoperative length of stay (LOS), costs for surgery and recovery, and the differences in terms of complications, readmission, and reoperation rate in the short term between the ER and CS groups. RESULTS The mean LOS was 4.18 days in group CS and 1.79 days in group ER (p < 0.0001). The mean operative time (OT) per patient was 190.20 min in the group CS and 133.54 min in the group ER, resulting in an average cost of 7272.57€ per patient in group CS and 5424.09€ per patient in group ER. The average recovery cost was 1809.94€ for the group CS series and 775.07 for the group ER one. Overall complications (Clavien-Dindo up to II) occurred in 6 patients (5.8 %) in group CS and in 2 patients (1.9 %) in group ER (p = 0.149) and specific complications (Clavien-Dindo IIIb) occurred for 9 patients (8.7 %) in Group CS and for 14 patients (13.5 %) in group ER (p = 0.268) after hospital discharge within 1-month of follow-up. Twelve patients (11.5 %) in group CS and 13 (12.5 %) in group ER were readmitted after discharge (p = 0.831) within 1-month of follow-up; 8 patients (7.7 %) in group CS versus 9 patients (8.8 %) in group ER needed to be reoperated (p = 0.800) within 1-month follow-up. CONCLUSIONS Enhanced recovery pathway reduces significantly LOS in bariatric surgical patients and shortens the mean OT of the procedure, with no significant differences in terms of surgical outcomes. Furthermore, recovery charges were lower and operative time was shorter allowing for procedural cost reduction.
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Journal Article |
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Romigi A, Pierantozzi M, Placidi F, Evangelista E, Albanese M, Liguori C, Nazzaro M, Risina BU, Simonelli V, Izzi F, Mercuri NB, Desiato MT. Restless legs syndrome and post polio syndrome: a case−control study. Eur J Neurol 2014; 22:472-8. [DOI: 10.1111/ene.12593] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Accepted: 09/01/2014] [Indexed: 11/29/2022]
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Simonelli V, Boven C, Loi P, El Nakadi I, Closset J. Intraperitoneal mesh prosthesis metastasis from pancreatic cancer, after laparoscopic hernia repair. Acta Chir Belg 2016; 116:51-3. [PMID: 27385143 DOI: 10.1080/00015458.2016.1139831] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Introduction There are very few case reports of metastasis on a mesh prosthesis following laparoscopic hernia repair in the literature and its incidence is completely unknown. Case report A 76-year-old male patient presented in December 2013 with a suspicious malignant lesion of the pancreatic tail on the MRI. He was also complaining of a painful mass in the right para-rectal area. An exploratory laparoscopy performed in December 2013 revealed microscopic whitish peritoneal implants in the left hypochondrium and a massive metastasis involving a mesh prosthesis placed é years before in the right para-rectal area. The pathology report of biopsies of the mesh confirmed a metastasis compatible with a pancreatic tumor. Discussion Possible modes of metastasis and limited published data to date on mesh prosthesis metastasis are presented. This situation can be assimilated to port-site metastasis after laparoscopy. Conclusion A mesh prosthesis metastasis after laparoscopic hernia repair is very rare.
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Case Reports |
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Goergen M, Manzoni D, De Blasi V, Fabiano P, Poulain V, De Magistris L, Simonelli V, Dahan K, Azagra JS. Influence of obesity-susceptibility loci (MC4R and INSIG2) on the outcome of weight loss and amelioration of co-morbidity in obese patients treated by a gastric-bypass. BULLETIN DE LA SOCIETE DES SCIENCES MEDICALES DU GRAND-DUCHE DE LUXEMBOURG 2011:7-24. [PMID: 22272442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND Genome-wide association and linkage studies have identified multiple susceptibility loci for obesity. OBJECTIVE We hypothesized that such loci may affect weight loss and comorbidity amelioration outcomes following a gastric-bypass. DESIGN A total of 200 obese patients who underwent a gastric bypass surgery were genotyped for single-nucleotide polymorphisms (SNPs) in insulin induced gene 2 (INSIG2) and melanocortin 4 receptor (MC4R) obesity genes. RESULTS After a follow-up of 18 month, the patients (192) data of weight excess loss (72%) and co-morbidities (Hypertension -62- and Diabetes -39-) were analyzed and compared. 26 Patients with SNP were found (9 MC4R and 17 INSIG2). No significant differences in weight excess loss and amelioration of comorbidities were revealed. CONCLUSIONS The data suggest no influence of weight excess loss and amelioration of co-morbidities after gastric-bypass by genetic susceptibility.
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Lioncino M, Monda E, Caiazza M, Simonelli V, Nesti C, Mauriello A, Budillon A, Di Santo A, Bruno G, Varone A, Nigro V, Santorelli FM, Pacileo G, Russo MG, Frisso G, Sampaolo S, Limongelli G. Combined Clinical, Molecular, and Muscle Biopsy Approach to Unveil Prevalence and Clinical Features of Rare Neuromuscular and Mitochondrial Diseases in Patients With Cardiomyopathies. CIRCULATION. GENOMIC AND PRECISION MEDICINE 2023; 16:412-414. [PMID: 37194584 DOI: 10.1161/circgen.123.004122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
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9
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Salzano A, Rocca A, Arcopinto M, Amato B, Marra AM, Simonelli V, Mozzillo P, Giuliani A, Tafuri D, Cinelli M. Bowel Angiodysplasia and Myocardial Infarction secondary to an ischaemic imbalance: a case report. Open Med (Wars) 2015; 10:543-548. [PMID: 28352752 PMCID: PMC5368879 DOI: 10.1515/med-2015-0092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Accepted: 11/05/2015] [Indexed: 11/24/2022] Open
Abstract
Angiodysplasia, defined as a vascular ectasia or arteriovenous malformation, is the most frequent cause of occult bleeding in patients older than 60 years and a significant association with several cardiac condition is described. Patients with anemia and negative findings on upper endoscopy and colonoscopy should be referred for further investigation of the small bowel. The investigation of choice, when available, is wireless capsule endoscopy. Several therapeutic options are available in this cases, as we reviewed in this report. We report a case of 78-year old man admitted to our Intensive Coronary Unit for dyspnea and chest pain. A diagnosis of non-ST-segment elevation acute coronary syndrome was made and a concomintant, significant anemia was found (hemoglobin 8.2 g/dl). No cororary disease was found by an angiography though the past medical history revealed systemic hypertension, chronic kidney disease (KDOQY stage III), and diabetes mellitus type II on insuline therapy. A Wireless Video capsule examination was positive for jejunum angiodysplasia and an argon plasma coagulation was chosen as terapeutic option. No subsequent supportive therapy and interventions were required in subsequent one year of follow-up.
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Case Reports |
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10
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Monda E, Lioncino M, Caiazza M, Simonelli V, Nesti C, Rubino M, Perna A, Mauriello A, Budillon A, Pota V, Bruno G, Varone A, Nigro V, Santorelli FM, Pacileo G, Russo MG, Frisso G, Sampaolo S, Limongelli G. Clinical, Genetic, and Histological Characterization of Patients with Rare Neuromuscular and Mitochondrial Diseases Presenting with Different Cardiomyopathy Phenotypes. Int J Mol Sci 2023; 24:ijms24109108. [PMID: 37240454 DOI: 10.3390/ijms24109108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/15/2023] [Accepted: 05/20/2023] [Indexed: 05/28/2023] Open
Abstract
Cardiomyopathies are mostly determined by genetic mutations affecting either cardiac muscle cell structure or function. Nevertheless, cardiomyopathies may also be part of complex clinical phenotypes in the spectrum of neuromuscular (NMD) or mitochondrial diseases (MD). The aim of this study is to describe the clinical, molecular, and histological characteristics of a consecutive cohort of patients with cardiomyopathy associated with NMDs or MDs referred to a tertiary cardiomyopathy clinic. Consecutive patients with a definitive diagnosis of NMDs and MDs presenting with a cardiomyopathy phenotype were described. Seven patients were identified: two patients with ACAD9 deficiency (Patient 1 carried the c.1240C>T (p.Arg414Cys) homozygous variant in ACAD9; Patient 2 carried the c.1240C>T (p.Arg414Cys) and the c.1646G>A (p.Ar549Gln) variants in ACAD9); two patients with MYH7-related myopathy (Patient 3 carried the c.1325G>A (p.Arg442His) variant in MYH7; Patient 4 carried the c.1357C>T (p.Arg453Cys) variant in MYH7); one patient with desminopathy (Patient 5 carried the c.46C>T (p.Arg16Cys) variant in DES); two patients with mitochondrial myopathy (Patient 6 carried the m.3243A>G variant in MT-TL1; Patient 7 carried the c.253G>A (p.Gly85Arg) and the c.1055C>T (p.Thr352Met) variants in MTO1). All patients underwent a comprehensive cardiovascular and neuromuscular evaluation, including muscle biopsy and genetic testing. This study described the clinical phenotype of rare NMDs and MDs presenting as cardiomyopathies. A multidisciplinary evaluation, combined with genetic testing, plays a main role in the diagnosis of these rare diseases, and provides information about clinical expectations, and guides management.
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Pellicano M, Simonelli V, Catena U, Nappi C. The Role of Office and Operative Fertiloscopy in the Infertility Diagnostic Work-Up. J Minim Invasive Gynecol 2008. [DOI: 10.1016/j.jmig.2008.09.462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Gosse J, Simonelli V, Dessily M. Adenocarcinoma arising from a chronic perianal fistula in a Crohn's disease patient: case report and review of the literature. Acta Chir Belg 2024; 124:143-146. [PMID: 37668063 DOI: 10.1080/00015458.2023.2205722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 04/18/2023] [Indexed: 09/06/2023]
Abstract
Crohn's disease patients frequently develop perianal fistulas during their life. They are also at higher risk to develop cancers. Rarely, those cancers appear within a prior chronic fistula. The main types are adenocarcinoma mostly mucinous and squamous cell carcinoma. They are generally discovered at an advanced stage with a poor prognosis because symptoms are generally the same as those of the fistula itself. Regular follow-up of chronic fistulas is then important for an early diagnosis as well as histological analysis of the fistula during surgery. There is no consensus on the ideal treatment but abdominoperineal resection is the corner stone with or without neo or adjuvant chemo-radiotherapy. This paper presents a rare case of mucinous adenocarcinoma in a chronic perianal fistula in a Crohn's disease female and provides a review of the literature.
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Review |
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Marmo E, Alfano V, Cassano D, Giordano E, Simonelli V, Colucci D'amato C. Long Term Migraine Prophylaxis With Flunarizine: Clinical Evidence. Cephalalgia 1987. [DOI: 10.1177/03331024870070s6211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pellicano M, Catena U, Di Iorio P, Simonelli V, Sorrentino F, Stella N, Bonifacio M, Cirillo D, Nappi C. [Diagnostic and operative fertiloscopy]. MINERVA GINECOLOGICA 2007; 59:175-81. [PMID: 17505459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
In the last decade, ''fertiloscopy'', a new mini-invasive diagnostic technique, is becoming more and more popular: it is a good alternative to the diagnostic laparoscopy, a standard procedure but surely not harmless, very often capable to discover pathologies in asymptomatic patients. Fertiloscopy allows the visualization of the posterior pelvis (posterior face of the uterus, ovaries, tubes and intestinal ansae with the rectum), with a technique of introducing an optical device in the pouch of Douglas, through the posterior vaginal fornix, under previous general or local anesthesia. When fertiloscopy is performed under local anesthesia, it can comfortably be carried out in out-patient departments and it is generally well tolerated by patients, who follow the whole procedure on the monitor. Moreover, it is possible to perform small interventions, such as adhesiolysis, ovarian drilling, coagulation of endometriosis spots and to perform chromosalpingoscopy and salpingoscopy, important investigations in the diagnostic iter of unexplained female infertility. With fertiloscopy, the patient, therefore, can avoid a real surgical intervention, such as diagnostic laparoscopy, and also uncomfortable examinations, such as hysterosalpingography.
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English Abstract |
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