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2.
BMJ Case Rep ; 17(8)2024 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-39214583

RESUMO

Peritoneal involvement represents one of the major difficulties that arise during the treatment of pancreatic adenocarcinoma. In fact, currently, there is a growing interest in the administration of intraoperative hyperthermic intraperitoneal chemotherapy (HIPEC) as an adjunct to surgical pancreatic resection, both with prophylactic or therapeutic intent. With this video, we report a case of pancreatic body adenocarcinoma treated with fully laparoscopic distal splenic pancreatectomy with intraoperative HIPEC with gemcitabine, administered initially with a prophylactic intent, based on a preliminary negative peritoneal washing cytology result. In our case, the association of HIPEC and surgical resection did not affect the postoperative recovery, and after 15 months of follow-up, the patient remains alive and has no signs of disease recurrence.


Assuntos
Quimioterapia Intraperitoneal Hipertérmica , Laparoscopia , Pancreatectomia , Neoplasias Pancreáticas , Humanos , Pancreatectomia/métodos , Laparoscopia/métodos , Neoplasias Pancreáticas/cirurgia , Neoplasias Pancreáticas/terapia , Masculino , Adenocarcinoma/terapia , Adenocarcinoma/cirurgia , Adenocarcinoma/patologia , Gencitabina , Pessoa de Meia-Idade , Desoxicitidina/análogos & derivados , Desoxicitidina/administração & dosagem , Desoxicitidina/uso terapêutico , Terapia Combinada , Antimetabólitos Antineoplásicos/administração & dosagem , Antimetabólitos Antineoplásicos/uso terapêutico
3.
Surg Endosc ; 2024 Aug 13.
Artigo em Inglês | MEDLINE | ID: mdl-39138678

RESUMO

INTRODUCTION: Although several studies report that the robotic approach is more costly than laparoscopy, the cost-effectiveness of robotic distal pancreatectomy (RDP) over laparoscopic distal pancreatectomy (LDP) is still an issue. This study evaluates the cost-effectiveness of the RDP and LDP approaches across several Spanish centres. METHODS: This study is an observational, multicenter, national prospective study (ROBOCOSTES). For one year from 2022, all consecutive patients undergoing minimally invasive distal pancreatectomy were included, and clinical, QALY, and cost data were prospectively collected. The primary aim was to analyze the cost-effectiveness between RDP and LDP. RESULTS: During the study period, 80 procedures from 14 Spanish centres were analyzed. LDP had a shorter operative time than the RDP approach (192.2 min vs 241.3 min, p = 0.004). RDP showed a lower conversion rate (19.5% vs 2.5%, p = 0.006) and a lower splenectomy rate (60% vs 26.5%, p = 0.004). A statistically significant difference was reported for the Comprehensive Complication Index between the two study groups, favouring the robotic approach (12.7 vs 6.1, p = 0.022). RDP was associated with increased operative costs of 1600 euros (p < 0.031), while overall cost expenses resulted in being 1070.92 Euros higher than the LDP but without a statistically significant difference (p = 0.064). The mean QALYs at 90 days after surgery for RDP (0.9534) were higher than those of LDP (0.8882) (p = 0.030). At a willingness-to-pay threshold of 20,000 and 30,000 euros, there was a 62.64% and 71.30% probability that RDP was more cost-effective than LDP, respectively. CONCLUSIONS: The RDP procedure in the Spanish healthcare system appears more cost-effective than the LDP.

4.
Int J Surg Case Rep ; 123: 110136, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-39197238

RESUMO

INTRODUCTION AND IMPORTANCE: Incisional hernias occur in about 15 % of all patients that undergo abdominal surgery. Treatment of giant incisional ventral hernias (GIH) results in a surgical challenge associated with postoperative morbidities, risk of hernia recurrence, and costs. In recent years the use of both botulinum toxin (BT) to overcome abdominal cavity leakage and improved preoperative imaging studies by 3D-reconstruction has improved outcomes after these complex procedures. CASE PRESENTATION: We describe a case of 3D-reconstruction technique before and after the use of botulinum toxin for complex ventral incisional hernia. No intraoperative complications or technical failures of the system were recorded. The operative time was 180 min, and the length of hospital stay was five days. DISCUSSION: In this preliminary study we showed our experience with the use of 3D-reconstruction of abdominal wall following preoperative BT preparation for elective surgical repair of recurrent complex incisional hernias. CONCLUSION: The use of 3D-recostruction provides important information for a correct pre-surgical planning.

5.
Case Rep Oncol ; 17(1): 843-851, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39144246

RESUMO

Introduction: Hepatocellular carcinoma (HCC) is an aggressive solid tumor associated with high mortality. Surgery is the main treatment consideration for early disease, but patients who present with locally advanced or metastatic HCC at diagnosis have limited treatment options. There has been great progress in locoregional, immunotherapy, and targeted treatments for advanced HCC. Standard of care for HCC has changed due to results demonstrating safety and efficacy in phase 3 studies, namely, for atezolizumab concomitant with bevacizumab. Nonetheless, additional therapeutic approaches are still warranted to further increase overall survival in HCC. A first-in-class treatment option investigated in patients with HCC is Tumor Treating Fields (TTFields) therapy, which is delivered locoregionally to the tumor site from a portable medical device. TTFields are electric fields that interfere with critical cancer cell processes, hindering tumor progression. Case Presentation: Here, we report on a case study of a 62-year-old male patient with HCC receiving TTFields concomitant with sorafenib as second-line therapy. Although the patient experienced adverse events with previous nivolumab, they achieved a complete response and continued on treatment for 51 months until disease progression, which led to treatment cessation. We report that during 39 months of subsequent treatment with TTFields therapy and sorafenib, the patient experienced a good quality of life, low systemic toxicity, and stable disease following a partial response. Conclusions: These promising findings, along with those of the pilot phase 2 HEPANOVA clinical study, warrant further investigation of TTFields therapy in HCC.

6.
Ann Surg ; 2024 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-38939929

RESUMO

OBJECTIVE: To propose to our community a common language about extreme liver surgery. BACKGROUND: The lack of a clear definition of extreme liver surgery prevents convincing comparisons of results among centers. METHODS: We used a two-round Delphi methodology to quantify consensus among liver surgery experts. For inclusion in the final recommendations, we established a consensus when the positive responses (agree and totally agree) exceeded 70%. The study steering group summarized and reported the recommendations. In general, a five-point Likert scale with a neutral central value was used, and in a few cases multiple choices. Results are displayed as numbers and percentages. RESULTS: A two-round Delphi study was completed by 38 expert surgeons in complex hepatobiliary surgery. The surgeon´s median age was 58 years old (52-63) and the median years of experience was 25 years (20-31). For the proposed definitions of total vascular occlusion, hepatic flow occlusion and inferior vein occlusion, the degree of agreement was 97%, 81% and 84%, respectively. In situ approach (64%) was the preferred, followed by ante situ (22%) and ex situ (14%). Autologous or cadaveric graft for hepatic artery or hepatic vein repair were the most recommended (89%). The use of veno-venous bypass or portocaval shunt revealed the divergence depending on the case. Overall, 75% of the experts agreed with the proposed definition for extreme liver surgery. CONCLUSION: Obtaining a consensus on the definition of extreme liver surgery is essential to guarantee the correct management of patients with highly complex hepatobiliary oncological disease. The management of candidates for extreme liver surgery involves comprehensive care ranging from adequate patient selection to the appropriate surgical strategy.

7.
Clin Transl Oncol ; 2024 Jun 22.
Artigo em Inglês | MEDLINE | ID: mdl-38907097

RESUMO

INTRODUCTION: Surgery is the standard treatment for pancreatic neuroendocrine tumors (pNETs), obtaining favorable results but associating high morbidity and mortality rates. This study assesses stereotactic body radiation therapy (SBRT) as a radical approach for small (< 2 cm) nonfunctioning pNETs. MATERIALS AND METHODS: From January 2017 to June 2023, 20 patients with small pNETs underwent SBRT in an IRB-approved study. Endpoints included local control, tolerance, progression-free survival, and overall survival (OS). Diagnostic assessments comprised endoscopy, CT scans, OctreScan or PET-Dotatoc, abdominal MRI, and histological confirmatory samples. RESULTS: In a 30-month follow-up of 20 patients (median age 55.5 years), SBRT was well-tolerated with no grade > 2 toxicity. 40% showed morphological response, 55% remained stable. Metabolically, 50% achieved significant improvement. With a median OS of 41.5 months, all patients were alive without local or distant progression or need for surgical resection. CONCLUSION: SBRT is a feasible and well-tolerated approach for small neuroendocrine pancreatic tumors, demonstrating effective local control. Further investigations are vital for validation and extension of these findings.

8.
BMJ Case Rep ; 17(5)2024 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-38802258

RESUMO

Cholecystectomy-related iatrogenic biliary injuries cause intricate postoperative complications that can significantly affect a patient's life, often leading to chronic liver disease and biliary stenosis. These patients require a multidisciplinary approach with intervention from radiologists, endoscopists and surgeons experienced in hepatobiliary reconstruction. Symptoms vary from none to jaundice, pruritus and ascending cholangitis. The best strategy for the management of biliary stricture is based on optimal preoperative planning. Our patient presented 1 year after an iatrogenic lesion was induced during a cholecystectomy, and was managed with a complex common bile duct reconstruction through a Roux-en-Y hepaticojejunostomy. The three-dimensional (3D) model reconstruction of the biliary tract was pivotal in the planning of the patient's surgery, providing additional preoperative and intraoperative assistance throughout the procedure. The 3D model's description of detailed spatial relations between the bile duct and the vascular structure in the liver hilum enabled a correct surgical dissection and safe execution of the anastomosis.


Assuntos
Colecistectomia , Complicações Pós-Operatórias , Humanos , Anastomose em-Y de Roux , Colecistectomia/efeitos adversos , Colecistectomia/métodos , Colestase/cirurgia , Colestase/etiologia , Constrição Patológica/cirurgia , Doença Iatrogênica , Imageamento Tridimensional , Procedimentos de Cirurgia Plástica/métodos , Complicações Pós-Operatórias/cirurgia
9.
Int J Colorectal Dis ; 38(1): 277, 2023 Dec 05.
Artigo em Inglês | MEDLINE | ID: mdl-38051359

RESUMO

BACKGROUND: The watch-and-wait (WW) strategy is a potential option for patients with rectal cancer who obtain a complete clinic response after neoadjuvant therapy. The aim of this study is to analyze the long-term oncological outcomes and perform a cost-effectiveness analysis in patients undergoing this strategy for rectal cancer. MATERIAL AND METHODS: The data of patients treated with the WW strategy were prospectively collected from January 2015 to January 2020. A control group was created, matched 1:1 from a pool of 480 patients undergoing total mesorectal excision. An independent company carried out the financial analysis. Clinical and oncological outcomes were analyzed in both groups. Outcome parameters included surgical and follow-up costs, quality-adjusted life years (QALYs), and the incremental cost per QALY gained or the incremental cost-effectiveness ratio (ICER). RESULTS: Forty patients were included in the WW group, with 40 patients in the surgical group. During a median follow-up period of 36 months, metastasis-free survival (MFS) and overall survival (OS) were similar in the two groups. In the WW group, nine (22%) local regrowths were detected in the first 2 years. The permanent stoma rate was slightly higher after salvage surgery in the WW group compared to the surgical group (48.5% vs 20%, p < 0.01). The cost-effectiveness analysis was slightly better for the WW group, especially for low rectal cancer compared to medium-high rectal cancer (ICER = - 108,642.1 vs ICER = - 42,423). CONCLUSIONS: The WW strategy in locally advanced rectal cancer offers similar oncological outcomes with respect to the surgical group and excellent results in quality of life and cost outcomes, especially for low rectal cancer. Nonetheless, the complex surgical field during salvage surgery can lead to a high permanent stoma rate; therefore, the careful selection of patients is mandatory.


Assuntos
Análise de Custo-Efetividade , Neoplasias Retais , Humanos , Qualidade de Vida , Neoplasias Retais/cirurgia , Reto , Indução de Remissão , Terapia Neoadjuvante , Conduta Expectante/métodos , Recidiva Local de Neoplasia , Resultado do Tratamento , Quimiorradioterapia
10.
BMJ Case Rep ; 16(12)2023 Dec 28.
Artigo em Inglês | MEDLINE | ID: mdl-38154867

RESUMO

We describe the first robot-assisted right hemicolectomy performed in Spain using the new Hugo RAS (robotic-assisted surgery) (Medtronic, Minneapolis, Minnesota, USA). No conversion was registered, and no intraoperative complications or technical failures of the system were recorded. The operative time was 200 min, the docking time was 5 min and the length of the hospital stay was 8 days. We conclude that a right hemicolectomy using the Hugo RAS system is safe and feasible. Our earlier experience provides important skills for those who are starting to use this new robotic system.


Assuntos
Laparoscopia , Procedimentos Cirúrgicos Robóticos , Humanos , Espanha , Complicações Intraoperatórias , Colectomia
11.
BMJ Case Rep ; 16(11)2023 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-37967928

RESUMO

Late relapses of Wilms tumour are extremely uncommon but still represent possible events. Even more rarely Wilms tumours present as extrarenal neoplasms, for which it could be difficult to diagnose and treat them promptly.We present a unique case of late recurrence of Wilms tumour 16 years after the primary diagnosis, with location in the gynaecological system. The relapse presented as a vaginal mass, and it gradually raised up to involve the majority of pelvic organs. We accurately studied the tumour extension, even realising a 3D preoperative reconstruction, and we managed to evaluate the patient with a multidisciplinary team involving general surgeons, urologists, gynaecologists and plastic surgeons. We finally decided for an extended surgical approach and realised a complete pelvic exenteration. Three months after surgery, the patient is in a good general condition, without major surgical complications and with no radiological signs of pelvic tumour relapse.


Assuntos
Neoplasias Renais , Exenteração Pélvica , Tumor de Wilms , Feminino , Humanos , Recidiva Local de Neoplasia/cirurgia , Recidiva Local de Neoplasia/patologia , Tumor de Wilms/cirurgia , Recidiva , Estudos Retrospectivos
12.
BMC Surg ; 23(1): 316, 2023 Oct 18.
Artigo em Inglês | MEDLINE | ID: mdl-37853412

RESUMO

BACKGROUND: Thanks to the introduction of radiomics, 3d reconstruction can be able to analyse tissues and recognise true hypertrophy from non-functioning tissue in patients treated with major hepatectomies with hepatic modulation.The aim of this study is to evaluate the performance of 3D Imaging Modelling in predict liver failure. METHODS: Patients submitted to major hepatectomies after hepatic modulation at Sanchinarro University Hospital from May 2015 to October 2019 were analysed. Three-dimensional reconstruction was realised before and after surgical treatment. The volumetry of Future Liver Remnant was calculated, distinguishing in Functional Future Liver Remnant (FRFx) i.e. true hypertrophy tissue and Anatomic Future Liver Remnant (FRL) i.e. hypertrophy plus no functional tissue (oedema/congestion) These volumes were analysed in patients with and without post hepatic liver failure. RESULTS: Twenty-four procedures were realised (11 ALPPS and 13 PVE followed by major hepatectomy). Post hepatic liver failure grade B and C occurred in 6 patients. The ROC curve showed a better AUC for FRFxV (74%) with respect to FRLV (54%) in prediction PHLF > B. The increase of anatomical FRL (iFRL) was superior in the ALPPS group (120%) with respect to the PVE group (73%) (p = 0,041), while the increase of functional FRFX (iFRFx) was 35% in the ALLPS group and 46% in the PVE group (p > 0,05), showing no difference in the two groups. CONCLUSION: The 3D reconstruction model can allow optimal surgical planning, and through the use of specific algorithms, can contribute to differential functioning liver parenchyma of the FLR.


Assuntos
Embolização Terapêutica , Falência Hepática , Neoplasias Hepáticas , Humanos , Hepatectomia/métodos , Estudos Retrospectivos , Imageamento Tridimensional , Neoplasias Hepáticas/cirurgia , Veia Porta/cirurgia , Fígado/diagnóstico por imagem , Fígado/cirurgia , Falência Hepática/etiologia , Falência Hepática/cirurgia , Hipertrofia , Embolização Terapêutica/métodos , Resultado do Tratamento
13.
Updates Surg ; 75(7): 2039-2042, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37430097

RESUMO

Robotic surgery has gained worldwide acceptance in the past decade, and several studies have shown that this technique is safe and feasible. The innovation of this system is the open surgical console with an HD-3D display, a system tower, and four independent arm carts. We describe the first robot-assisted cholecystectomy performed with the new Hugo RAS (robotic-assisted surgery) system (Medtronic, Minneapolis, MN, USA) in Spain. The procedure was completed without conversion. No intraoperative complication or technical failure of the system was recorded. The operative time was 70 min. The docking time was 3 min. Hospital length of stay was 1 days. This case report shows the safety and feasibility of cholecystectomy with the Hugo RAS system and provides relevant data that may be of help to early adopters of this surgical platform.

14.
Int J Surg Case Rep ; 106: 108240, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-37137172

RESUMO

INTRODUCTION AND IMPORTANCE: Duodenum-preserving pancreatic resections (DPPHR) is a reasonable surgical option for benign or low-grade malignant tumours of the pancreatic head. Several techniques have been proposed, with or without common biliary duct preservation. CASE PRESENTATION: We report for the first time two cases of pancreas divisum treated with this technique and we illustrate two other cases of pancreatic disease in which this procedure was realized from January 2015 to January 2020 in the HM Sanchinarro University Hospital. CLINICAL DISCUSSION: Pancreatic head resection with pancreatic parenchyma sparing, and duodenal preservation has been commonly accepted in the treatment of benign pancreatic head disease. CONCLUSION: This technique offers a wide application in the treatment of pancreatic and duodenal benign disease, including pancreatic malformation such as pancreas divisum and duodenal tumour that require segmental resection, in order to assure complete pancreatic head resection and to avoid duodenal and biliary duct ischemia.

15.
Int J Surg Case Rep ; 106: 108178, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-37060760

RESUMO

BACKGROUND: Robotic surgery has gained worldwide acceptance over the past decade, with several studies showing that this technique is safe and feasible. METHODS: We describe the first robot-assisted Nissen fundoplication for hiatal hernia performed with the new Hugo™ RAS (Robotic assisted surgery) system (Medtronic, Minneapolis, MN, USA) in Spain. The innovation of this system is the open surgical console with a 3D-HD display, a system tower and four independent arm carts. RESULTS: The surgical procedures were completed without conversion. No intraoperative complications or technical failures of the system were recorded. The operative time was 97 min, the docking time was 3 min, and the length of hospital stay was three days. CONCLUSIONS: This case report shows the safety and feasibility of Nissen fundoplication for hiatal hernia with the Hugo™ RAS system and provides relevant data that may assist early adopters of this surgical platform.

16.
Surg Oncol ; 46: 101901, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36638761

RESUMO

BACKGROUND: Cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) for peritoneal carcinomatosis can be performed in two ways: first, the standard open abdominal technique (Open HIPEC); or second, the closed technique. In recent years, a new technique has been introduced to perform closed HIPEC; the Peritoneal Recirculation System (PRS-1.0 Combat) with CO2 recirculation technology (PRS Closed HIPEC). The objective of this study is to present our experience with the PRS Closed HIPEC by comparing the intraoperative, postoperative and oncological results with the standard Open HIPEC technique (the Coliseum technique). METHODS: Data on patients undergoing CRS and HIPEC at the Sanchinarro University Hospital, Madrid from October 2012 to June 2021 were collected in a prospective database. The inclusion criteria were patients with primary or recurrent peritoneal metastases in gastrointestinal malignancies or ovarian cancer. The presence of an unresectable peritoneal carcinomatosis, the coexistence of another oncological disease, unresectable and distant metastases were the exclusion criteria. RESULTS: From October 2014 to June 2021, 84 patients underwent CRS and HIPEC at the Sanchinarro University Hospital, Madrid with curative intent. Since the introduction of the PRS Closed HIPEC technique in 2016, 65 patients have been treated. Before the introduction of PRS Closed HIPEC, 19 cases were performed using the Coliseum technique (the Open HIPEC group). The intraoperative results were similar in the two groups. Complete cytoreduction was achieved in all cases in the Open HIPEC group and in 98% in the PRS Closed HIPEC group. The rate of major complications was similar between the groups. Median Overall Survival (OS) resulted better in the Closed HIPEC group (67 months) with respecto to the Open group (43 months) (p < 0,001). Median Disease-Free Survival (DFS) was 15 months in the Open HIPEC group and 40 months in the PRS Closed HIPEC group (p < 0.001). CONCLUSION: The Peritoneal Recirculation System with CO2 recirculation technology (PRS Closed HIPEC) is a reproducible and safe technique and may represent a valid alternative for the administration of HIPEC.


Assuntos
Hipertermia Induzida , Neoplasias Peritoneais , Feminino , Humanos , Quimioterapia Intraperitoneal Hipertérmica , Neoplasias Peritoneais/secundário , Dióxido de Carbono/uso terapêutico , Quimioterapia do Câncer por Perfusão Regional , Terapia Combinada , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Procedimentos Cirúrgicos de Citorredução , Taxa de Sobrevida , Estudos Retrospectivos
17.
BMJ Open ; 12(11): e062873, 2022 11 04.
Artigo em Inglês | MEDLINE | ID: mdl-36332946

RESUMO

INTRODUCTION: To date, no pancreatic stump closure technique has been shown to be superior to any other in distal pancreatectomy. Although several studies have shown a trend towards better results in transection using a radiofrequency device (radiofrequency-assisted transection (RFT)), no randomised trial for this purpose has been performed to date. Therefore, we designed a randomised clinical trial, with the hypothesis that this technique used in distal pancreatectomies is superior in reducing clinically relevant postoperative pancreatic fistula (CR-POPF) than mechanical closures. METHODS AND ANALYSIS: TRANSPAIRE is a multicentre randomised controlled trial conducted in seven Spanish pancreatic centres that includes 112 patients undergoing elective distal pancreatectomy for any indication who will be randomly assigned to RFT or classic stapler transections (control group) in a ratio of 1:1. The primary outcome is the CR-POPF percentage. Sample size is calculated with the following assumptions: 5% one-sided significance level (α), 80% power (1-ß), expected POPF in control group of 32%, expected POPF in RFT group of 10% and a clinically relevant difference of 22%. Secondary outcomes include postoperative results, complications, radiological evaluation of the pancreatic stump, metabolomic profile of postoperative peritoneal fluid, survival and quality of life. Follow-ups will be carried out in the external consultation at 1, 6 and 12 months postoperatively. ETHICS AND DISSEMINATION: TRANSPAIRE has been approved by the CEIM-PSMAR Ethics Committee. This project is being carried out in accordance with national and international guidelines, the basic principles of protection of human rights and dignity established in the Declaration of Helsinki (64th General Assembly, Fortaleza, Brazil, October 2013), and in accordance with regulations in studies with biological samples, Law 14/2007 on Biomedical Research will be followed. We have defined a dissemination strategy, whose main objective is the participation of stakeholders and the transfer of knowledge to support the exploitation of activities. REGISTRATION DETAILS: ClinicalTrials.gov Registry (NCT04402346).


Assuntos
Pancreatectomia , Humanos , Estudos Multicêntricos como Assunto , Pâncreas/cirurgia , Pancreatectomia/efeitos adversos , Pancreatectomia/métodos , Fístula Pancreática/etiologia , Fístula Pancreática/prevenção & controle , Complicações Pós-Operatórias/etiologia , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto , Fatores de Risco
18.
Front Microbiol ; 13: 991123, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36090091

RESUMO

Nitrogenase-dependent H2 production by photosynthetic bacteria, such as Rhodobacter capsulatus, has been extensively investigated. An important limitation to increase H2 production using genetic manipulation is the scarcity of high-throughput screening methods to detect possible overproducing mutants. Previously, we engineered R. capsulatus strains that emitted fluorescence in response to H2 and used them to identify mutations in the nitrogenase Fe protein leading to H2 overproduction. Here, we used ultraviolet light to induce random mutations in the genome of the engineered H2-sensing strain, and fluorescent-activated cell sorting to detect and isolate the H2-overproducing cells from libraries containing 5 × 105 mutants. Three rounds of mutagenesis and strain selection gradually increased H2 production up to 3-fold. The whole genomes of five H2 overproducing strains were sequenced and compared to that of the parental sensor strain to determine the basis for H2 overproduction. No mutations were present in well-characterized functions related to nitrogen fixation, except for the transcriptional activator nifA2. However, several mutations mapped to energy-generating systems and to carbon metabolism-related functions, which could feed reducing power or ATP to nitrogenase. Time-course experiments of nitrogenase depression in batch cultures exposed mismatches between nitrogenase protein levels and their H2 and ethylene production activities that suggested energy limitation. Consistently, cultivating in a chemostat produced up to 19-fold more H2 than the corresponding batch cultures, revealing the potential of selected H2 overproducing strains.

19.
Int J Surg Case Rep ; 97: 107412, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35917607

RESUMO

INTRODUCTION: Giant fibrovascular esophageal polyp is a rare benign intraluminal tumour. The aim of this study is to perform a review of the most recent literature in order to describe and analyse the current range of possible diagnostics and treatment strategies. CASE REPORT: We present two cases of giant fibrovascular esophageal polyp treated with a combined minimally invasive transluminal approach at Sanchinarro University Hospital. Further, we perform a literature review. CONCLUSION: We present two cases of grant fibrovascular polyp submitted to minimally invasive transluminal approach. Furthermore, 54 original articles reporting 59 cases have been analysed. In the surgical group, an esophagotomy and polyp resection were performed in 31 (91 %) patients and a total esophagectomy in two patients (5,8 %). Severe morbidity occurred in two patients (5,8 %.) The median hospital stay was 9.25 days. A total of two (5,8 %) cases of recurrence have been registered. In the minimally invasive transluminal approach group, 27 patients had a polyp resection performed completely by endoscopy/transoral. There were no complications but there was one case of recurrence. CONCLUSION: The transluminal approach is safe and should be considered also in the treatment of large esophageal polyps.

20.
Int J Med Robot ; 18(5): e2425, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35596535

RESUMO

BACKGROUND: Enucleation has widely spread as an alternative strategy in the treatment of small pancreatic tumours and cystic lesions. To date there are limited data on perioperative outcomes after pancreatic enucleation performed using a minimally invasive robotic technique, particularly regarding the risk factors associated with postoperative pancreatic fistula (POPF). We perform a comparative study of robotic pancreatic enucleation (RPE) and open enucleation (OPE) with the aim of evaluating clinical and cost-effective outcomes. METHODS: This is a case-matched analysis of patients who underwent robotic and open pancreatic enucleation performed at Sanchinarro University Hospital, Madrid, from October 2014 to December 2021. Patient data were obtained retrospectively. Clinicopathologic characteristics and perioperative and postoperative outcomes were recorded and analysed. Two groups of demographically similar patients were analysed: the robotic group (n = 20) and the open group (n = 20). The patient characteristics of the two groups have been compared. From February 2015, quality-adjusted life years (QALYs) are also included and prospectively recorded in the database and used to measure the effectiveness of the treatment. RESULT: A total of 20 RPE and 20 OPE have been included. The incremental cost of the robotic approach versus open was €2617.85(CI 95% 1601.48; 3634.24) and the incremental utility was 0.0879 QALYs (CI 95% 0.0834; 0.0925). The estimated ICER for patients was €29,782.13 (CI 95% 17,313.29; 43,576.01) per QALY gained. Robotic resection resulted a shorter postoperative hospital stay, less wound infections, faster recovery diet and a similar operating time. The two groups had similar complication rates. Pathological data were similar for both procedures. CONCLUSION: RPE resulted in a shorter hospital stay and less blood loss and morbidity, comparable with the outcomes of open enucleation. RPE may also be acceptable in terms of cost-effectiveness.


Assuntos
Laparoscopia , Neoplasias Pancreáticas , Procedimentos Cirúrgicos Robóticos , Análise Custo-Benefício , Humanos , Laparoscopia/métodos , Pancreatectomia/métodos , Neoplasias Pancreáticas/cirurgia , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Procedimentos Cirúrgicos Robóticos/métodos , Resultado do Tratamento
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