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  1. Article ; Online: Long-term outcomes after surgical resection of pancreatic metastases from renal Clear-cell carcinoma.

    Boubaddi, Mehdi / Marichez, Arthur / Adam, Jean Philippe / Chiche, Laurence / Laurent, Christophe

    European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology

    2024  Volume 50, Issue 2, Page(s) 107960

    Abstract: Background: Clear-cell renal cell carcinoma frequently metastasizes to the pancreas (PMRCC). The management of such metastases remains controversial due to their frequent multifocality and indolent evolution.: Methods: This study describes the ... ...

    Abstract Background: Clear-cell renal cell carcinoma frequently metastasizes to the pancreas (PMRCC). The management of such metastases remains controversial due to their frequent multifocality and indolent evolution.
    Methods: This study describes the surgical management of these lesions and their long-term oncological outcomes. The study included patients who underwent pancreatic resection of PMRCC at Bordeaux University Hospital between June 2005 and March 2022. Morbidity and mortality were assessed at 90 days. Overall survival (OS) and disease-free (DFS) survival were assessed at 5 years.
    Results: Forty-two patients underwent pancreatic resection for PMRCC, including 18 (42.8 %) total pancreatectomies. The median time from nephrectomy to the diagnosis of PMRCC was 121 (range: 6-400) months. Lesions were multiple in 19/42 (45.2 %) patients. Ten (23.8 %) patients suffered a severe complication (Dindo-Clavien classification ≥ IIIA by D90), including one patient who died postoperatively. The median follow-up was 76 months. The R0 rate was 100 %. The OS and DFS rates were 92.8 % and 29.6 %, respectively, at 5 years.
    Conclusion: Pancreatic resection for PMRCC provides long-term oncological control despite a high recurrence rate.
    MeSH term(s) Humans ; Carcinoma, Renal Cell/secondary ; Retrospective Studies ; Pancreatic Neoplasms/pathology ; Pancreatectomy/adverse effects ; Kidney Neoplasms/pathology
    Language English
    Publishing date 2024-01-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 632519-1
    ISSN 1532-2157 ; 0748-7983
    ISSN (online) 1532-2157
    ISSN 0748-7983
    DOI 10.1016/j.ejso.2024.107960
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Response to the comment of V. Vashney and A. Swami for "pre-operative embolization of a replaced right hepatic artery before pancreaticoduodenectomy for pancreatic adenocarcinoma".

    Marichez, Arthur / Fernandez, Benjamin / Chiche, Laurence / Laurent, Christophe

    HPB : the official journal of the International Hepato Pancreato Biliary Association

    2021  Volume 24, Issue 5, Page(s) 785–787

    MeSH term(s) Adenocarcinoma/diagnostic imaging ; Adenocarcinoma/surgery ; Hepatic Artery/diagnostic imaging ; Hepatic Artery/surgery ; Humans ; Pancreatic Neoplasms/diagnostic imaging ; Pancreatic Neoplasms/surgery ; Pancreaticoduodenectomy/adverse effects ; Pancreatic Neoplasms
    Language English
    Publishing date 2021-11-12
    Publishing country England
    Document type Letter ; Comment
    ZDB-ID 2131251-5
    ISSN 1477-2574 ; 1365-182X
    ISSN (online) 1477-2574
    ISSN 1365-182X
    DOI 10.1016/j.hpb.2021.11.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Interdomain Linker of the Bioelecrocatalyst Cellobiose Dehydrogenase Governs the Electron Transfer.

    Zhang, Lan / Laurent, Christophe V F P / Schwaiger, Lorenz / Wang, Lushan / Ma, Su / Ludwig, Roland

    ACS catalysis

    2023  Volume 13, Issue 12, Page(s) 8195–8205

    Abstract: Direct bioelectrocatalysis applied in biosensors, biofuel cells, and bioelectrosynthesis is based on an efficient electron transfer between enzymes and electrodes in the absence of redox mediators. Some oxidoreductases are capable of direct electron ... ...

    Abstract Direct bioelectrocatalysis applied in biosensors, biofuel cells, and bioelectrosynthesis is based on an efficient electron transfer between enzymes and electrodes in the absence of redox mediators. Some oxidoreductases are capable of direct electron transfer (DET), while others achieve the enzyme to electrode electron transfer (ET) by employing an electron-transferring domain. Cellobiose dehydrogenase (CDH) is the most-studied multidomain bioelectrocatalyst and features a catalytic flavodehydrogenase domain and a mobile, electron-transferring cytochrome domain connected by a flexible linker. The ET to the physiological redox partner lytic polysaccharide monooxygenase or, ex vivo, electrodes depends on the flexibility of the electron transferring domain and its connecting linker, but the regulatory mechanism is little understood. Studying the linker sequences of currently characterized CDH classes we observed that the inner, mobile linker sequence is flanked by two outer linker regions that are in close contact with the adjacent domain. A function-based definition of the linker region in CDH is proposed and has been verified by rationally designed variants of
    Language English
    Publishing date 2023-06-05
    Publishing country United States
    Document type Journal Article
    ISSN 2155-5435
    ISSN 2155-5435
    DOI 10.1021/acscatal.3c02116
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Droplet digital polymerase chain reaction detection of KRAS mutations in pancreatic FNA samples: Technical and practical aspects for routine clinical implementation.

    Mansour, Yara / Boubaddi, Mehdi / Odion, Typhaine / Marty, Marion / Belleannée, Geneviève / Berger, Arthur / Subtil, Clément / Laurent, Christophe / Dabernat, Sandrine / Amintas, Samuel

    Cancer cytopathology

    2024  Volume 132, Issue 5, Page(s) 274–284

    Abstract: Background: Pancreatic adenocarcinoma (PDAC) is associated with a 5-year survival rate of less than 6%, and current treatments have limited efficacy. The diagnosis of PDAC is mainly based on a cytologic analysis of endoscopic ultrasound-guided fine- ... ...

    Abstract Background: Pancreatic adenocarcinoma (PDAC) is associated with a 5-year survival rate of less than 6%, and current treatments have limited efficacy. The diagnosis of PDAC is mainly based on a cytologic analysis of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) samples. However, the collected specimens may prove noncontributory in a significant number of cases, delaying patient management and treatment. The combination of EUS-FNA sample examination and KRAS mutation detection can improve the sensitivity for diagnosis. In this context, the material used for molecular analysis may condition performance.
    Methods: The authors prospectively compared the performance of cytologic analysis combined with a KRAS droplet digital polymerase chain reaction (ddPCR) assay for PDAC diagnosis using either conventional formalin-fixed, paraffin-embedded cytologic samples or needle-rinsing fluids.
    Results: Molecular testing of formalin-fixed, paraffin-embedded cytologic samples was easier to set up, but the authors observed that the treatment of preanalytic samples, in particular the fixation process, drastically reduced ddPCR sensitivity, increasing the risk of false-negative results. Conversely, the analysis of dedicated, fresh needle-rinsing fluid samples appeared to be ideal for ddPCR analysis; it had greater sensitivity and was easily to implement in clinical use. In particular, fluid collection by the endoscopist, transportation to the laboratory, and subsequent freezing did not affect DNA quantity or quality. Moreover, the addition of KRAS mutation detection to cytologic examination improved diagnosis performance, regardless of the source of the sample.
    Conclusions: Considering all of these aspects, the authors propose the use of an integrated flowchart for the KRAS molecular testing of EUS-FNA samples in clinical routine.
    MeSH term(s) Humans ; Proto-Oncogene Proteins p21(ras)/genetics ; Pancreatic Neoplasms/genetics ; Pancreatic Neoplasms/pathology ; Pancreatic Neoplasms/diagnosis ; Mutation ; Polymerase Chain Reaction/methods ; Endoscopic Ultrasound-Guided Fine Needle Aspiration/methods ; Prospective Studies ; DNA Mutational Analysis/methods ; Male ; Female ; Paraffin Embedding ; Adenocarcinoma/genetics ; Adenocarcinoma/pathology ; Adenocarcinoma/diagnosis ; Aged ; Middle Aged ; Sensitivity and Specificity ; Carcinoma, Pancreatic Ductal/genetics ; Carcinoma, Pancreatic Ductal/pathology ; Carcinoma, Pancreatic Ductal/diagnosis
    Chemical Substances Proto-Oncogene Proteins p21(ras) (EC 3.6.5.2) ; KRAS protein, human
    Language English
    Publishing date 2024-02-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2594979-2
    ISSN 1934-6638 ; 1934-662X
    ISSN (online) 1934-6638
    ISSN 1934-662X
    DOI 10.1002/cncy.22795
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Al matrix composites reinforced by in situ synthesized graphene–Cu hybrid layers: interface control by spark plasma sintering conditions

    Pu, Bowen / Mesguich, David / Estournès, Claude / Zhang, Xiang / Chevallier, Geoffroy / Zhao, Naiqin / Laurent, Christophe

    J Mater Sci. 2022 Mar., v. 57, no. 11, p. 6266-6281

    2022  , Page(s) 6266–6281

    Abstract: Tremendous impacts are usually made by the synthesis method and consolidation technique on microstructure and interface of graphene/Al composites. In the present work, an in situ gel-precursor decomposition route is proposed for the one-step synthesis of ...

    Abstract Tremendous impacts are usually made by the synthesis method and consolidation technique on microstructure and interface of graphene/Al composites. In the present work, an in situ gel-precursor decomposition route is proposed for the one-step synthesis of graphene nanosheet (GNS) decorated with Cu nanoparticles in the form of hybrid layers encapsulating Al grains (designated as GNS–Cu/Al). Consolidation is performed by spark plasma sintering (SPS) using markedly different sets of maximum temperature and maximum uniaxial pressure (400 °C/400 MPa or 500 °C/100 MPa). The powder and dense samples are investigated by several techniques including thermal analysis, X-ray diffraction and electron microscopy. The microhardness and elastic modulus of selected GNS–Cu/Al composites are investigated and related to the microstructure and preparation conditions. Results demonstrate that the interface structure is primarily determined by the roles of GNS–Cu hybrid layers and finely controlled by SPS conditions. This work paves a novel way to elucidate the evolutions of metal-decorated graphene hybrids in Al matrix composites.
    Keywords X-ray diffraction ; copper nanoparticles ; electron microscopy ; graphene ; microstructure ; modulus of elasticity ; nanosheets ; temperature ; thermal analysis
    Language English
    Dates of publication 2022-03
    Size p. 6266-6281
    Publishing place Springer US
    Document type Article ; Online
    ZDB-ID 2015305-3
    ISSN 1573-4803 ; 0022-2461
    ISSN (online) 1573-4803
    ISSN 0022-2461
    DOI 10.1007/s10853-022-07057-3
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Spark plasma sintered catalytic nickel-copper alloy and carbon nanotube electrodes for the hydrogen evolution reaction.

    Boué, Jean-Félix / Espinet, Cédric / Amigues, Simon / Mesguich, David / Cornu, David / Holade, Yaovi / Cambedouzou, Julien / Laurent, Christophe

    Chemical communications (Cambridge, England)

    2023  Volume 59, Issue 92, Page(s) 13719–13722

    Abstract: We report the proof-of-concept of spark plasma sintered (SPS) consolidated mesoporous composite catalytic electrodes based on nickel-copper alloys and carbon nanotubes for the electrocatalytic hydrogen evolution reaction (HER) in alkaline media. The ... ...

    Abstract We report the proof-of-concept of spark plasma sintered (SPS) consolidated mesoporous composite catalytic electrodes based on nickel-copper alloys and carbon nanotubes for the electrocatalytic hydrogen evolution reaction (HER) in alkaline media. The optimized electrode (203 m
    Language English
    Publishing date 2023-11-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/d3cc04472f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Immunohistochemical characterization of a steroid-secreting oncocytic adrenal carcinoma responsible for paraneoplastic hyperparathyroidism.

    Haissaguerre, Magalie / Louiset, Estelle / Juhlin, Christofer C / Stenman, Adam / Laurent, Christophe / Trouette, Hélène / Lefebvre, Hervé / Tabarin, Antoine

    European journal of endocrinology

    2023  Volume 188, Issue 4, Page(s) K11–K16

    Abstract: We report a unique case of a 44-year-old man with paraneoplastic hyperparathyroidism due to an oncocytic adrenocortical carcinoma (stage pT3N0R0M0, ENSAT 2 with a 4% Ki-67). Paraneoplastic hyperparathyroidism was associated with mild adrenocorticotropic ... ...

    Abstract We report a unique case of a 44-year-old man with paraneoplastic hyperparathyroidism due to an oncocytic adrenocortical carcinoma (stage pT3N0R0M0, ENSAT 2 with a 4% Ki-67). Paraneoplastic hyperparathyroidism was associated with mild adrenocorticotropic hormone (ACTH)-independent hypercortisolism and increased estradiol secretion responsible for gynecomastia and hypogonadism. Biological investigations performed in blood samples from peripheral and adrenal veins revealed that the tumor secreted parathyroid hormone (PTH) and estradiol. Ectopic PTH secretion was confirmed by abnormally high expression of PTH mRNA and clusters of PTH immunoreactive cells in the tumor tissue. Double-immunochemistry studies and analysis of contiguous slides for the expression of PTH and steroidogenic markers (scavenger receptor class B type 1 [SRB1], 3β-hydroxysteroid dehydrogenase [3β-HSD], and aromatase) were performed. The results suggested the presence of two tumor cells subtypes with large cells with voluminous nuclei producing only PTH and that were distinct from steroid-producing cells.
    MeSH term(s) Male ; Humans ; Adult ; Adenocarcinoma ; Parathyroid Hormone ; Hyperparathyroidism ; Steroids ; Estradiol
    Chemical Substances Parathyroid Hormone ; Steroids ; Estradiol (4TI98Z838E)
    Language English
    Publishing date 2023-03-04
    Publishing country England
    Document type Case Reports ; Journal Article
    ZDB-ID 1183856-5
    ISSN 1479-683X ; 0804-4643
    ISSN (online) 1479-683X
    ISSN 0804-4643
    DOI 10.1093/ejendo/lvad025
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Preemptive wirsungostomy: a safe fistula for avoiding a dreadful fistula in elective or planned pancreatoduodenectomy.

    Marichez, Arthur / Adam, Jean-Philippe / Mauriac, Paul / Passand, Goudarz T / Fernandez, Benjamin / Laurent, Christophe / Chiche, Laurence

    HPB : the official journal of the International Hepato Pancreato Biliary Association

    2023  Volume 25, Issue 8, Page(s) 881–889

    Abstract: Background: High-risk pancreatic anastomosis can lead to a high mortality rate after PD due to the development of postoperative pancreatic fistula (POPF). Performing a wirsungostomy by externalizing the pancreatic duct is a poorly known alternative to ... ...

    Abstract Background: High-risk pancreatic anastomosis can lead to a high mortality rate after PD due to the development of postoperative pancreatic fistula (POPF). Performing a wirsungostomy by externalizing the pancreatic duct is a poorly known alternative to anastomosis which could reduce the risk of POPF and the associated severe morbidity METHODS: We retrospectively evaluated patients who underwent primary wirsungostomy with PD from January 2007 to December 2021 in our tertiary referral center. Rates of morbidity and mortality with long-term pancreatic functions were studied.
    Results: Sixty patients were included. The median Updated Alternative Fistula Risk Score (ua-FRS) was 52%, with 95% patients in the high-risk ua-FRS category and 88.3% patients with stage D risk of developing POPF according to the classification of the ISGPS. The mortality rate was 3.3%, and overall 90-day postoperative morbidity was 63.7% with 50% of patients developing major complications. Mean follow-up was 29.8 months. Twelve patients (20%) became diabetic and 35 patients (58.3%) had preserved pancreatic endocrine function CONCLUSION: Preemptive wirsungostomy with PD could be an appropriate procedure for patients with high-risk pancreatic anastomosis. The high associated morbidity could be compromised by the low mortality and preservation of endocrine function compared to total pancreatectomy or severe POPF.
    MeSH term(s) Humans ; Pancreaticoduodenectomy/adverse effects ; Pancreaticoduodenectomy/methods ; Retrospective Studies ; Pancreas/surgery ; Pancreatic Fistula/etiology ; Pancreatic Fistula/prevention & control ; Pancreatic Ducts/surgery ; Postoperative Complications/etiology ; Postoperative Complications/prevention & control ; Postoperative Complications/surgery ; Risk Factors
    Language English
    Publishing date 2023-04-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 2131251-5
    ISSN 1477-2574 ; 1365-182X
    ISSN (online) 1477-2574
    ISSN 1365-182X
    DOI 10.1016/j.hpb.2023.04.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: THBS1

    Giraud, Julie / Chalopin, Domitille / Ramel, Eloïse / Boyer, Thomas / Zouine, Atika / Derieppe, Marie-Alix / Larmonier, Nicolas / Adotevi, Olivier / Le Bail, Brigitte / Blanc, Jean-Frédéric / Laurent, Christophe / Chiche, Laurence / Derive, Marc / Nikolski, Macha / Saleh, Maya

    Cell reports

    2024  Volume 43, Issue 2, Page(s) 113773

    Abstract: Hepatocellular carcinoma (HCC) is an inflammation-associated cancer arising from viral or non-viral etiologies including steatotic liver diseases (SLDs). Expansion of immunosuppressive myeloid cells is a hallmark of inflammation and cancer, but their ... ...

    Abstract Hepatocellular carcinoma (HCC) is an inflammation-associated cancer arising from viral or non-viral etiologies including steatotic liver diseases (SLDs). Expansion of immunosuppressive myeloid cells is a hallmark of inflammation and cancer, but their heterogeneity in HCC is not fully resolved and might underlie immunotherapy resistance. Here, we present a high-resolution atlas of innate immune cells from patients with HCC that unravels an SLD-associated contexture characterized by influx of inflammatory and immunosuppressive myeloid cells, including a discrete population of THBS1
    MeSH term(s) Humans ; Carcinoma, Hepatocellular ; Triggering Receptor Expressed on Myeloid Cells-1 ; Liver Neoplasms ; Immunosuppression Therapy ; Myeloid Cells ; Immunosuppressive Agents ; Inflammation
    Chemical Substances Triggering Receptor Expressed on Myeloid Cells-1 ; Immunosuppressive Agents ; TREM1 protein, human
    Language English
    Publishing date 2024-02-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2649101-1
    ISSN 2211-1247 ; 2211-1247
    ISSN (online) 2211-1247
    ISSN 2211-1247
    DOI 10.1016/j.celrep.2024.113773
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Oncological strategy following R1 sphincter-saving resection in low rectal cancer after chemoradiotherapy.

    Denost, Quentin / Assenat, Vincent / Vendrely, Veronique / Celerier, Bertrand / Rullier, Anne / Laurent, Christophe / Rullier, Eric

    European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology

    2021  Volume 47, Issue 7, Page(s) 1683–1690

    Abstract: Aim: Sphincter-saving resection (SSR) for low rectal cancer remains challenging due to the high risk of positive resection margin (R1). Long-term outcomes and the dedicated oncological strategy are not well established in this situation. The aim of this ...

    Abstract Aim: Sphincter-saving resection (SSR) for low rectal cancer remains challenging due to the high risk of positive resection margin (R1). Long-term outcomes and the dedicated oncological strategy are not well established in this situation. The aim of this study was to define the more appropriate strategy according to the patterns of recurrence.
    Methods: Between 1994 and 2014, patients treated by SSR for low rectal cancer with preoperative chemoradiotherapy were included. Three types of recurrences were defined: local (LR), distant (DR) and mixed (MR). Recurrences and survival after R0 and R1 resection were analysed by Kaplan-Meier and compared with the log-rang test.
    Results: Among 394 patients receiving SSR, 42 (10.6%) had R1 resection. Independent factors of R1 resection were EMVI (OR2.24,95%IC1.10-4.53,p = 0.025) and no tumor downstaging (OR8.41,95%IC2.50-8.32,p = 0.001). Both 5-year disease free and overall survival, and 5-year distant and local recurrence, were significantly worse after R1 resection. The overall recurrence after R1 resection was 57% (24/42), 7% had LR, 36% DR and 14% MR. Time to DR was shorter than time to LR (11.1 vs. 34.3) months. In all cases of MR, DR occurred before LR (12.1 vs. 34.3) months, meaning that after R1 resection, the first concern was DR.
    Conclusion: R1 resection after SSR for low rectal cancer reflects a more aggressive and systemic disease. Prognosis depends on DR in about 90% of cases, suggesting that pelvic control should not be the priority in the oncological strategy after R1. Adjuvant systemic chemotherapy ought to be preferred to salvage abdominoperineal resection.
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Chemoradiotherapy ; Digestive System Surgical Procedures ; Female ; Humans ; Male ; Margins of Excision ; Middle Aged ; Neoadjuvant Therapy ; Neoplasm Recurrence, Local ; Neoplasm Staging ; Prognosis ; Rectal Neoplasms/mortality ; Rectal Neoplasms/pathology ; Rectal Neoplasms/therapy ; Retrospective Studies ; Survival Rate
    Language English
    Publishing date 2021-02-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 632519-1
    ISSN 1532-2157 ; 0748-7983
    ISSN (online) 1532-2157
    ISSN 0748-7983
    DOI 10.1016/j.ejso.2021.01.031
    Database MEDical Literature Analysis and Retrieval System OnLINE

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