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Lai G, De Grossi F, Catusi I, Pesce E, Manfrini N. Dissecting the Puzzling Roles of FAM46C: A Multifaceted Pan-Cancer Tumour Suppressor with Increasing Clinical Relevance. Cancers (Basel) 2024; 16:1706. [PMID: 38730656 PMCID: PMC11083040 DOI: 10.3390/cancers16091706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/23/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
FAM46C is a well-established tumour suppressor with a role that is not completely defined or universally accepted. Although FAM46C expression is down-modulated in several tumours, significant mutations in the FAM46C gene are only found in multiple myeloma (MM). Consequently, its tumour suppressor activity has primarily been studied in the MM context. However, emerging evidence suggests that FAM46C is involved also in other cancer types, namely colorectal, prostate and gastric cancer and squamous cell and hepatocellular carcinoma, where FAM46C expression was found to be significantly reduced in tumoural versus non-tumoural tissues and where FAM46C was shown to possess anti-proliferative properties. Accordingly, FAM46C was recently proposed to function as a pan-cancer prognostic marker, bringing FAM46C under the spotlight and attracting growing interest from the scientific community in the pathways modulated by FAM46C and in its mechanistic activity. Here, we will provide the first comprehensive review regarding FAM46C by covering (1) the intracellular pathways regulated by FAM46C, namely the MAPK/ERK, PI3K/AKT, β-catenin and TGF-β/SMAD pathways; (2) the models regarding its mode of action, specifically the poly(A) polymerase, intracellular trafficking modulator and inhibitor of centriole duplication models, focusing on connections and interdependencies; (3) the regulation of FAM46C expression in different environments by interferons, IL-4, TLR engagement or transcriptional modulators; and, lastly, (4) how FAM46C expression levels associate with increased/decreased tumour cell sensitivity to anticancer agents, such as bortezomib, dexamethasone, lenalidomide, pomalidomide, doxorubicin, melphalan, SK1-I, docetaxel and norcantharidin.
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Affiliation(s)
- Giancarlo Lai
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, 20122 Milan, Italy; (G.L.); (F.D.G.); (E.P.)
- Department of Biosciences, University of Milan, 20133 Milan, Italy
| | - Federica De Grossi
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, 20122 Milan, Italy; (G.L.); (F.D.G.); (E.P.)
- Department of Biosciences, University of Milan, 20133 Milan, Italy
| | - Ilaria Catusi
- SC Clinical Pathology, SS Medical Genetics Laboratory, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy;
| | - Elisa Pesce
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, 20122 Milan, Italy; (G.L.); (F.D.G.); (E.P.)
- Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy
| | - Nicola Manfrini
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, 20122 Milan, Italy; (G.L.); (F.D.G.); (E.P.)
- Department of Biosciences, University of Milan, 20133 Milan, Italy
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Mancino M, Lai G, De Grossi F, Cuomo A, Manganaro L, Butta GM, Ferrari I, Vicenzi E, Poli G, Pesce E, Oliveto S, Biffo S, Manfrini N. FAM46C Is an Interferon-Stimulated Gene That Inhibits Lentiviral Particle Production by Modulating Autophagy. Microbiol Spectr 2023; 11:e0521122. [PMID: 37358411 PMCID: PMC10434054 DOI: 10.1128/spectrum.05211-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 06/02/2023] [Indexed: 06/27/2023] Open
Abstract
FAM46C is a multiple myeloma (MM) tumor suppressor whose function is only starting to be elucidated. We recently showed that in MM cells FAM46C triggers apoptosis by inhibiting autophagy and altering intracellular trafficking and protein secretion. To date, both a physiological characterization of FAM46C role and an assessment of FAM46C-induced phenotypes outside of MM are lacking. Preliminary reports suggested an involvement of FAM46C with regulation of viral replication, but this was never confirmed. Here, we show that FAM46C is an interferon-stimulated gene and that the expression of wild-type FAM46C in HEK-293T cells, but not of its most frequently found mutant variants, inhibits the production of both HIV-1-derived and HIV-1 lentiviruses. We demonstrate that this effect does not require transcriptional regulation and does not depend on inhibition of either global or virus-specific translation but rather mostly relies on FAM46C-induced deregulation of autophagy, a pathway that we show to be required for efficient lentiviral particle production. These studies not only provide new insights on the physiological role of the FAM46C protein but also could help in implementing more efficient antiviral strategies on one side and lentiviral particle production approaches on the other. IMPORTANCE FAM46C role has been thoroughly investigated in MM, but studies characterizing its role outside of the tumoral environment are still lacking. Despite the success of antiretroviral therapy in suppressing HIV load to undetectable levels, there is currently no HIV cure, and treatment is lifelong. Indeed, HIV continues to be a major global public health issue. Here, we show that FAM46C expression in HEK-293T cells inhibits the production of both HIV and HIV-derived lentiviruses. We also demonstrate that such inhibitory effect relies, at least in part, on the well-established regulatory role that FAM46C exerts on autophagy. Deciphering the molecular mechanism underlying this regulation will not only facilitate the understanding of FAM46C physiological role but also give new insights on the interplay between HIV and the cellular environment.
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Affiliation(s)
- Marilena Mancino
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, Milan, Italy
| | - Giancarlo Lai
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, Milan, Italy
| | | | - Alessandro Cuomo
- Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Lara Manganaro
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, Milan, Italy
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Giacomo M. Butta
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, Milan, Italy
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Ivan Ferrari
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, Milan, Italy
| | - Elisa Vicenzi
- Viral Pathogenesis and Biosafety Unit, San Raffaele Scientific Institute, Milan, Italy
| | - Guido Poli
- Viral Pathogenesis and Biosafety Unit, San Raffaele Scientific Institute, Milan, Italy
- Vita-Salute San Raffaele University School of Medicine, Milan, Italy
| | - Elisa Pesce
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, Milan, Italy
| | - Stefania Oliveto
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, Milan, Italy
- Department of Biosciences, University of Milan, Milan, Italy
| | - Stefano Biffo
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, Milan, Italy
- Department of Biosciences, University of Milan, Milan, Italy
| | - Nicola Manfrini
- INGM, Istituto Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, Milan, Italy
- Department of Biosciences, University of Milan, Milan, Italy
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Saw P, Tan G, Tan A, Lai G, Tan W, Tan E, Ang MK, Lim DT, Kanesvaran R, Ng Q, Jain A, Tan W, Rajasekaran T, Chan J, Teh Y, Tan S, Lim T, Tan D. 192P ddPCR versus plasma NGS in detecting clearance of plasma EGFR mutations. J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00445-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Kiratzis M, Lai G, Calamita P, Mancino M, Iriti M, Manfrini N, Gallo S. RACK1 release from the Ribosome Couples Translational Regulation with Starving Signaling and Possibly Depends on Phosphorylation of Key Serine and Threonine Residues. Cell Mol Biol (Noisy-le-grand) 2023; 69:7-12. [PMID: 37213164 DOI: 10.14715/cmb/2022.69.1.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Indexed: 05/23/2023]
Abstract
The balance between protein anabolism and catabolism sets the foundations on which cells build their homeostasis. RACK1 is a ribosome-associated scaffold protein involved in signal transduction. On the ribosome, RACK1 enhances specific translation. Conversely, upon growth factor/nutrient starvation, RACK1 is present in a ribosome-free form and inhibits protein synthesis. However, the precise role of RACK1 when not bound to the ribosome still requires elucidation. Here, we show that extra-ribosomal RACK1 increases LC3-II accumulation, thereby mimicking an autophagy-like phenotype. Next, based on the ribosome-bound structure of RACK1, we suggest a possible mechanism for RACK1 release from the ribosome which relies on phosphorylation of precise amino acid residues, namely Thr39, Ser63, Thr86, Ser276, Thr277, Ser278, Ser279. Specifically, by performing an unbiased in silico screening using phospho-kinase prediction tools, we propose that, upon starving, AMPK1/2, ULK1/2 and PKR are the strongest candidate protein kinases to phosphorylate RACK1. This may be relevant in the context of caloric restriction and cancer therapy, where repressing translation of specific mRNAs would open important therapeutic avenues. Overall, our work provides novel insight into RACK1 function(s) by connecting its ribosomal and extra-ribosomal activities with translation and signaling.
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Affiliation(s)
- Maria Kiratzis
- Molecular Histology and Cell Growth Unit, National Institute of Molecular Genetics "Fondazione Romeo e Enrica Invernizzi" - INGM, Milan, Italy.
| | - Giancarlo Lai
- Department of Biosciences, University of Milan, Milan, Italy.
| | - Piera Calamita
- Molecular Histology and Cell Growth Unit, National Institute of Molecular Genetics "Fondazione Romeo e Enrica Invernizzi" - INGM, Milan, Italy.
| | - Marilena Mancino
- Molecular Histology and Cell Growth Unit, National Institute of Molecular Genetics "Fondazione Romeo e Enrica Invernizzi" - INGM, Milan, Italy.
| | - Marcello Iriti
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.
| | - Nicola Manfrini
- Molecular Histology and Cell Growth Unit, National Institute of Molecular Genetics "Fondazione Romeo e Enrica Invernizzi" - INGM, Milan, Italy.
| | - Simone Gallo
- Molecular Histology and Cell Growth Unit, National Institute of Molecular Genetics "Fondazione Romeo e Enrica Invernizzi" - INGM, Milan, Italy.
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Huang CY, Jiang N, Shen M, Lai G, Takano A, Lim T, Tam W, Skanderup A, Tan D, Rozen S. 126P Clonal architecture and genomic features of smoking versus non-smoking oncogene-driven East-Asian non-small cell lung cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.09.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Chua K, Tan A, Saw S, Lai G, Tan W, Jain A, Rajasekaran T, Chia B, Li Y, Fong K, Siow T, Ng Q, Thiagarajan A, Kanesvaran R, Ng W, Yap S, Kalashnikova E, Aleshin A, Skanderup A, Lim WT, Yip C, Tan S, Tan D, Ang MK. P2.13-02 Dynamic Tracking of Bespoke Circulating Tumour DNA During Multi-Modality Therapy for Locally Advanced NSCLC (LA-NSCLC). J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Saw S, Tan A, Chen J, Lai G, Hlaing N, Takano A, Lau D, Yeong J, Lim K, Skanderup A, Chan J, Teh Y, Rajasekaran T, Jain A, Tan W, Ng Q, Kanesvaran R, Lim WT, Tan E, Ang MK, Tan D. EP16.03-036 Clinical and Genomic Features of HER2 exon 20 Insertion Mutations in East Asian NSCLC. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.1097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Ulivi P, Pasini L, Petracci E, Urbini M, Felip E, Stella F, Davoli F, Salvi M, Beau-Faller M, Tebaldi M, Azzali I, Solli P, Lai G, Amat R, Carbonell C, Martinez-Marti A, Pencreach E, Delmonte A, Crinò L. 21P Circulating free and extracellular vesicles-derived microRNA as prognostic biomarkers in resected early-stage non-small cell lung cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Tan A, Lai G, Saw S, Chua K, Takano A, Ong B, Koh T, Jain A, Tan W, Ng Q, Kanesvaran R, Rajasekaran T, Kalshnikova E, Shchegrova S, H. -Ta, Lin J, Renner D, Sethi H, Zimmermann B, Aleshin A, Lim W, Tan E, Skanderup A, Ang M, Tan D. MA07.06 Circulating Tumor DNA for Monitoring Minimal Residual Disease and Early Detection of Recurrence in Early Stage Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Tan W, Chua B, Yin D, Tan S, Tan D, Ang M, Kanesvaran R, Jain A, Rajasekaran T, Lai G, Toh C, Tan E, Ng Q, Lim W. P76.46 First-Line Osimertinib in Asian Patients with Advanced EGFR-Mutant Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Tan A, Lai G, Tan G, Seet A, Takano A, Alvarez J, Skanderup A, Tan W, Ang M, Kanesvaran R, Ng Q, Jain A, Rajasekaran T, Lim W, Tan E, Lim K, Tan D. FP14.13 Molecular Characterisation and Clinical Outcomes in RET Rearranged Non-Small Cell Lung Cancer (NSCLC). J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tan A, Ong B, Koh T, Chen J, Oo H, Lai G, Tan W, Ang M, Kanesvaran R, Ng Q, Jain A, Rajasekaran T, Zhai W, Skanderup A, Lim K, Tan E, Lim W, Tan D, Takano A. P38.03 Immunohistochemical, Histologic and Genomic Characterisation of Early Stage Pulmonary Invasive Mucinous Adenocarcinoma. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Lai G, Alvarez J, Yeo J, Sim N, Tan A, Zhou S, Suteja L, Lim T, Rohatgi N, Yeong J, Takano A, Lim K, Gogna A, Too C, Zhuang K, Jain A, Tan W, Kanesvaran R, Ng Q, Ang M, Rajasekaran T, Wang L, Toh C, Lim W, Tam W, Ginhoux F, Tan S, Skanderup A, Tan D, Tan E. OA01.06 Randomised Phase 2 Study of Nivolumab (N) Versus Nivolumab and Ipilimumab (NI) Combination in EGFR Mutant NSCLC. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Saw S, Lai G, Zhou S, Chen J, Ang M, Chua K, Kanesvaran R, Ng Q, Jain A, Tan W, Rajasekaran T, Lim D, Fong K, Takano A, Cheng X, Lim K, Koh T, Ong B, Tan E, Skanderup A, Tan D. OA06.05 Molecular and Clinical Features Associated with Relapse in Early Stage EGFR-Mutated NSCLC: A Single Institution Knowledge Bank. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tan A, Chua K, Teng Y, Takano A, Alvarez J, Nahar R, Rohatgi N, Lai G, Aung Z, Yeong J, Lim K, Naeini M, Kassam I, Jain A, Tan W, Gogna A, Too C, Kanesvaran R, Ng Q, Ang M, Rajasekaran T, Devanand A, Phua G, Tan B, Lee Y, Wang L, Teo A, Khng A, Lim M, Suteja L, Toh C, Lim W, Iyer N, Tam W, Tan E, Zhai W, Hillmer A, Skanderup A, Tan D. MA13.08 Genomic and Transcriptomic Features of Distinct Resistance Trajectories in EGFR Mutant Non-Small Cell Lung Cancer (NSCLC). J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Alvarez J, Chua K, Sim N, Abedi M, Chen J, Tan A, Lai G, Takano A, Lim W, Tan E, Lim K, Zhai W, Tan D, Skanderup A. P59.08 THOR: Multi-Ethnic, Open Access Thoracic Cancer Genomics Resource. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wong E, Lai G, Goh W, Hong J, Tan A, Poon E. 1383P Lung cancer in adolescents and young adults (AYA) in Asia: Tumour characteristics and molecular profiles. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Peluso P, Sechi B, Lai G, Dessì A, Dallocchio R, Cossu S, Aubert E, Weiss R, Pale P, Mamane V, Chankvetadze B. Comparative enantioseparation of chiral 4,4’-bipyridine derivatives on coated and immobilized amylose-based chiral stationary phases. J Chromatogr A 2020; 1625:461303. [DOI: 10.1016/j.chroma.2020.461303] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/13/2020] [Accepted: 06/01/2020] [Indexed: 12/14/2022]
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McCleary BV, De Vries JW, Rader JI, Cohen G, Prosky L, Mugford DC, Champ M, Okuma K, Abercrombie L, Ames N, Bajoras T, Bhandari S, Burkhardt G, Camire M, Cohen G, Cui S, Dougherty MP, Erhardt S, Evans A, Grutters M, Hutton-Okpalaeke M, Illaens S, Kanaya K, Kohn A, Konings E, Lai G, Lee T, Marshak M, Neese U, Nishibata T, Santi A, Saylor D, Steegmans M, Themeier H, Thomsen A, Tervila-Wilo A, Walker R, Wang C. Determination of Total Dietary Fiber (CODEX Definition) by Enzymatic-Gravimetric Method and Liquid Chromatography: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/93.1.221] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
A method for the determination of total dietary fiber (TDF), as defined by the CODEX Alimentarius, was validated in foods. Based upon the principles of AOAC Official MethodsSM 985.29, 991.43, 2001.03, and 2002.02, the method quantitates high- and low-molecular-weight dietary fiber (HMWDF and LMWDF, respectively). In 2007, McCleary described a method of extended enzymatic digestion at 37C to simulate human intestinal digestion followed by gravimetric isolation and quantitation of HMWDF and the use of LC to quantitate low-molecular-weight soluble dietary fiber (LMWSDF). The method thus quantitates the complete range of dietary fiber components from resistant starch (by utilizing the digestion conditions of AOAC Method 2002.02) to digestion resistant oligosaccharides (by incorporating the deionization and LC procedures of AOAC Method 2001.03). The method was evaluated through an AOAC collaborative study. Eighteen laboratories participated with 16 laboratories returning valid assay data for 16 test portions (eight blind duplicates) consisting of samples with a range of traditional dietary fiber, resistant starch, and nondigestible oligosaccharides. The dietary fiber content of the eight test pairs ranged from 11.57 to 47.83. Digestion of samples under the conditions of AOAC Method 2002.02 followed by the isolation and gravimetric procedures of AOAC Methods 985.29 and 991.43 results in quantitation of HMWDF. The filtrate from the quantitation of HMWDF is concentrated, deionized, concentrated again, and analyzed by LC to determine the LMWSDF, i.e., all nondigestible oligosaccharides of degree of polymerization 3. TDF is calculated as the sum of HMWDF and LMWSDF. Repeatability standard deviations (sr) ranged from 0.41 to 1.43, and reproducibility standard deviations (sR) ranged from 1.18 to 5.44. These results are comparable to other official dietary fiber methods, and the method is recommended for adoption as Official First Action.
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Affiliation(s)
- Barry V McCleary
- Megazyme International, Bray Business Park, Bray, Co. Wicklow, Ireland
| | - Jonathan W De Vries
- Medallion Laboratories/General Mills, 9000 Plymouth Ave N, Golden Valley, MN 55427
| | - Jeanne I Rader
- U.S. Food and Drug Administration, 5100 Paint Branch Pkwy, College Park, MD 20740
| | - Gerald Cohen
- Kraft Foods, 555 S. Broadway, Tarrytown, NY 10956
| | - Leon Prosky
- U.S. Food and Drug Administration, retired, 10265 Nolan Dr, Rockville, MD 20850-3507
| | - David C Mugford
- BRI Research Pty. Ltd, PO Box 7, North Ryde, NSW, Australia 1670
| | - Martine Champ
- University of Nantes, Htel Dieu Place Alexis Ricordeau, 44093 Nantes Cedex 1, France
| | - Kazuhiro Okuma
- Matsutani Chemical, Research Laboratory, Itami City, Hyogo 664-8508, Japan
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Tryliskyy Y, Lai G, Ghimire N, Sobczak E, Mackenzie S, Cook A, Mlotshwa M. The appropriateness of MRCP requests in investigation of suspected common bile duct stones. Clin Radiol 2019. [DOI: 10.1016/j.crad.2019.09.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tan A, Chua K, Takano A, Alvarez J, Ong B, Koh T, Aung Z, Jain A, Lai G, Tan W, Ang M, Ng Q, Kanesvaran R, Rajasekaran T, Iyer N, Lim W, Zhai W, Toh C, Skanderup A, Tan E, Tan D. P1.17-07 Neoadjuvant Gefitinib in Resectable Early Stage EGFR Mutant Non-Small Cell Lung Cancer (NSCLC): A Window-of-Opportunity Study. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1281] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Tan A, Lai G, Tan G, Poon S, Doble B, Lim T, Aung Z, Takano A, Tan W, Ang M, Tan B, Devanand A, Too C, Gogna A, Ong B, Koh T, Kanesvaran R, Ng Q, Jain A, Rajasekaran T, Lim A, Lim W, Toh C, Tan E, Lim K, Tan D. P1.09-19 High-Throughput Next Generation Sequencing of Treatment-Naïve Non-Squamous NSCLC: The Singapore National Lung Profiling Study. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kwang L, Lau D, Liew A, Ju Y, Lim E, Lai G, Nahar R, Teng Y, Chua K, Alvarez J, Lim M, Leong H, Chong F, Toh D, Quah H, Suteja L, Wang L, Lim K, Lim W, Tan E, Zhai W, Tam W, Iyer N, Tan D. P2.13-21 MET Addiction Can be Circumvented Through EGFR Inhibition Via AXL in MET-Amplified Primary Resistant EGFR-Mutant NSCLCX. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Korpal M, Puyang X, Furman C, Zheng GZ, Banka D, Wu J, Zhang Z, Thomas M, Mackenzie C, Yao H, Rimkunas V, Kumar P, Caleb B, Karr C, Subramanian V, Irwin S, Larsen N, Vaillancourt F, Nguyen TV, Davis A, Chan B, Hao MH, O'Shea M, Prajapati S, Agoulnik S, Kuznetsov G, Kumar N, Yu Y, Lai G, Hart A, Eckley S, Fekkes P, Bowser T, Joshi JJ, Selvaraj A, Wardell S, Norris J, Smith S, Reynolds D, Mitchell L, Wang J, Yu L, Kim A, Rioux N, Sahmoud T, Warmuth M, Smith PG, Zhu P. Abstract P1-10-08: Development of a first-in-class oral selective ERα covalent antagonist (SERCA) for the treatment of ERαWT and ERαMUT breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p1-10-08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Mutations in estrogen receptor alpha (ERα) are detected in up to 30% of breast cancer patients who have relapsed during endocrine therapy. ERα mutations functionally confer resistance to existing classes of endocrine therapies, likely through gaining constitutive activity. The fact that current ER-directed therapies are only partially effective in the ERα mutant setting, and that a significant proportion of resistant breast cancer metastases continue to remain dependent on ERα signaling for growth/survival, highlights the critical need to develop the next generation of ERα antagonists that can overcome aberrant ERα activity. Using structure-based drug design approaches we have identified a novel class of ERα antagonist referred to as Selective ERα Covalent Antagonist (SERCA) that inactivate both wild-type and mutant ERα by targeting a unique cysteine residue that is not conserved among other steroid hormone receptors. Biophysical, biochemical and cellular analyses confirm the covalent mechanism of action, specific binding to ER and selective inhibition of ERα-dependent transcription of SERCAs. H3B-6545 is a highly selective SERCA that potently antagonizes wild-type and mutant ERα in biochemical and cell based assays demonstrating increased potency over standard of care and other experimental agents. In vivo, H3B-6545 shows superior efficacy to fulvestrant in the MCF-7 xenograft model with once daily oral dosing, achieving maximal antitumor activity at doses >10x below the maximum tolerated dose in mice. In addition, H3B-6545 shows superior antitumor activity to both tamoxifen and fulvestrant in patient derived xenograft models of breast cancer carrying estrogen receptor mutations. In summary, H3B-6545 is a first-in-class, orally available and selective ER covalent antagonist with a compelling pre-clinical profile that is being developed for the treatment of ERα positive breast cancer.
Citation Format: Korpal M, Puyang X, Furman C, Zheng GZ, Banka D, Wu J, Zhang Z, Thomas M, Mackenzie C, Yao H, Rimkunas V, Kumar P, Caleb B, Karr C, Subramanian V, Irwin S, Larsen N, Vaillancourt F, Nguyen T-V, Davis A, Chan B, Hao MH, O'Shea M, Prajapati S, Agoulnik S, Kuznetsov G, Kumar N, Yu Y, Lai G, Hart A, Eckley S, Fekkes P, Bowser T, Joshi JJ, Selvaraj A, Wardell S, Norris J, Smith S, Reynolds D, Mitchell L, Wang J, Yu L, Kim A, Rioux N, Sahmoud T, Warmuth M, Smith PG, Zhu P. Development of a first-in-class oral selective ERα covalent antagonist (SERCA) for the treatment of ERαWT and ERαMUT breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P1-10-08.
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Affiliation(s)
- M Korpal
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - X Puyang
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - C Furman
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - GZ Zheng
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - D Banka
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - J Wu
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - Z Zhang
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - M Thomas
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - C Mackenzie
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - H Yao
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - V Rimkunas
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - P Kumar
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - B Caleb
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - C Karr
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - V Subramanian
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - S Irwin
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - N Larsen
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - F Vaillancourt
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - T-V Nguyen
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - A Davis
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - B Chan
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - MH Hao
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - M O'Shea
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - S Prajapati
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - S Agoulnik
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - G Kuznetsov
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - N Kumar
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - Y Yu
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - G Lai
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - A Hart
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - S Eckley
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - P Fekkes
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - T Bowser
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - JJ Joshi
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - A Selvaraj
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - S Wardell
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - J Norris
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - S Smith
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - D Reynolds
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - L Mitchell
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - J Wang
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - L Yu
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - A Kim
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - N Rioux
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - T Sahmoud
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - M Warmuth
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - PG Smith
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
| | - P Zhu
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA; Eisai Inc., 4 Corporate Drive, Andover, MA; Duke University, Research Drive, LSRC Bldg, C251, Durham, NC
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Lai G, Nahar R, Lim T, Kwang X, Liew P, Lim J, Aung Z, Takano A, Lim W, Lau D, Tan W, Ang M, Toh C, Tan B, Devanand A, Too C, Gogna A, Ong B, Koh T, Kanesvaran R, Ng Q, Jain A, Yuan J, Lim T, Lim A, Hillmer A, Zhai W, Iyer G, Tan E, Tam W, Tan D. OA 09.07 Clonality of c-MET Copy Number Gain as a Determinant of Primary TKI Resistance in EGFR-Mutant NSCLC. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Li J, Lai G. EP-1762: A Comparative Study of 4D and 3D CTSimulation in Esophageal Carcinoma. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)32125-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Lai G, Mahadevan A, Hackney D, Warnke PC, Nigim F, Kasper E, Wong ET, Carter BS, Chen CC. Diagnostic Accuracy of PET, SPECT, and Arterial Spin-Labeling in Differentiating Tumor Recurrence from Necrosis in Cerebral Metastasis after Stereotactic Radiosurgery. AJNR Am J Neuroradiol 2015; 36:2250-5. [PMID: 26427832 DOI: 10.3174/ajnr.a4475] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Accepted: 05/03/2015] [Indexed: 02/02/2023]
Abstract
BACKGROUND AND PURPOSE Radiographic assessment of cerebral metastasis after stereotactic radiosurgery remains a major challenge in neuro-oncology. It is often difficult to distinguish tumor progression from radiation necrosis in this setting using conventional MR imaging. The objective of this study was to compare the diagnostic sensitivity and specificity of different functional imaging modalities for detecting tumor recurrence after stereotactic radiosurgery. MATERIALS AND METHODS We retrospectively reviewed patients treated between 2007 and 2010 and identified 14 patients with cerebral metastasis who had clinical or radiographic progression following stereotactic radiosurgery and were imaged with arterial spin-labeling, FDG-PET, and thallium SPECT before stereotactic biopsy. Diagnostic accuracy, specificity, sensitivity, positive predictive value, and negative predictive value were calculated for each imaging technique by using the pathologic diagnosis as the criterion standard. RESULTS Six patients (42%) had tumor progression, while 8 (58%) developed radiation necrosis. FDG-PET and arterial spin-labeling were equally sensitive in detecting tumor progression (83%). However, the specificity of arterial spin-labeling was superior to that of the other modalities (100%, 75%, and 50%, respectively). A combination of modalities did not augment the sensitivity, specificity, positive predictive value, or negative predictive value of arterial spin-labeling. CONCLUSIONS In our series, arterial spin-labeling positivity was closely associated with the pathologic diagnosis of tumor progression after stereotactic radiosurgery. Validation of this finding in a large series is warranted.
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Affiliation(s)
- G Lai
- From the School of Medicine (G.L., B.S.C., C.C.C.), University of California, San Diego, La Jolla, California
| | | | | | - P C Warnke
- Division of Neurosurgery (P.C.W.), University of Chicago, Chicago, Illinois
| | - F Nigim
- Division of Neurosurgery (F.N., E.K.)
| | - E Kasper
- Division of Neurosurgery (F.N., E.K.)
| | - E T Wong
- Department of Neurology (E.T.W.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - B S Carter
- From the School of Medicine (G.L., B.S.C., C.C.C.), University of California, San Diego, La Jolla, California
| | - C C Chen
- From the School of Medicine (G.L., B.S.C., C.C.C.), University of California, San Diego, La Jolla, California
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Sethi NK, Goh OQM, Lai G, Tu TM, Lee KE. The quest to prevent stroke in atrial fibrillation: Fighting the fluttering heart in Singapore. Neurology 2014; 83:2099. [DOI: 10.1212/wnl.0000000000001062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Goh O, Lai G, Tu TM, Lee KE. The quest to prevent stroke in atrial fibrillation: Fighting the fluttering heart in Singapore. Neurology 2014; 82:2034-6. [DOI: 10.1212/wnl.0000000000000466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Huang H, Nie W, Qian J, Zang Y, Chen J, Lai G, Ye T, Xiu Q. Effects of TNF-α polymorphisms on asthma risk: a systematic review and meta-analysis. J Investig Allergol Clin Immunol 2014; 24:406-417. [PMID: 25668892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND Several studies have examined associations between TNF-α polymorphisms and asthma risk, but the results have been conflicting. METHODS A search was performed of the PubMed, EMBASE, and Wanfang databases. Data were extracted and pooled ORs with 95% CIs were calculated. RESULTS Fifty-four studies were included. A significant association between the TNFA-308A/G polymorphism and asthma susceptibility was observed for AA + AG vs GG (OR, 1.39; 95% CI, 1.23-1.58; P < .001). This polymorphism was also significantly associated with asthma risk in whites (OR, 1.47; 95% CI, 1.25-1.73; P < .001), atopic asthma risk (OR, 1.38; 95% CI, 1.16-1.65; P < .001), pediatric asthma risk (OR, 1.48; 95% CI, 1.23-1.79; P < .001), and adult asthma risk (OR, 1.35; 95% CI, 1.21-1.52; P < .001).There was also a significant association between the TNFA -857C/T polymorphism and asthma risk in the recessive model (OR, 1.25; 95% CI, 1.10-1.43; P < .001). In the subgroup analyses, asthma risk was significantly increased in Asians (OR, 1.23; 95% CI, 1.07-1.41; P = .004) and atopic individuals (OR, 1.33; 95% CI, 1.13-1.57; P < .001). No significant association was found for the TNFA-238A/G polymorphism. There were insufficient data to evaluate the associations between TNFA -1031T/C and -863C/A polymorphisms and asthma risk. CONCLUSIONS This meta-analysis suggests that TNFA -308A/G and -857C/T polymorphisms are risk factors for asthma.
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Lai G, Lee K. A novel pathway for atrial fibrillation: Concise, practical, easy-to-use. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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McDonald CR, White NS, Farid N, Lai G, Kuperman JM, Bartsch H, Hagler DJ, Kesari S, Carter BS, Chen CC, Dale AM. Recovery of white matter tracts in regions of peritumoral FLAIR hyperintensity with use of restriction spectrum imaging. AJNR Am J Neuroradiol 2013; 34:1157-63. [PMID: 23275591 DOI: 10.3174/ajnr.a3372] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND AND PURPOSE DTI is being increasingly used to visualize critical white matter tracts adjacent to brain tumors before neurosurgical resection. However, brain tumors, particularly high-grade gliomas, are typically surrounded by regions of FLAIR hyperintensity that include edema, which increase isotropic diffusion, degrading the ability of standard DTI to uncover orientation estimates within these regions. We introduce a new technique, RSI, which overcomes this limitation by removing the spherical, fast diffusion component introduced by edema, providing better analysis of white matter architecture. MATERIALS AND METHODS A total of 10 patients with high-grade gliomas surrounded by FLAIR-HI that at least partially resolved on follow-up imaging were included. All patients underwent RSI and DTI at baseline (FLAIR-HI present) and at follow-up (FLAIR-HI partially resolved). FA values obtained with RSI and DTI were compared within regions of FLAIR-HI and NAWM at both time points. RESULTS RSI showed higher FA in regions of FLAIR-HI and NAWM relative to DTI, reflecting the ability of RSI to specifically measure the slow, restricted volume fraction in regions of edema and NAWM. Furthermore, a method by time interaction revealed that FA estimates increased when the FLAIR-HI resolved by use of standard DTI but remained stable with RSI. Tractography performed within the region of FLAIR-HI revealed the superior ability of RSI to track fibers through severe edema relative to standard DTI. CONCLUSIONS RSI improves the quantification and visualization of white matter tracts in regions of peritumoral FLAIR-HI associated with edema relative to standard DTI and may provide a valuable tool for neurosurgical planning.
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Affiliation(s)
- C R McDonald
- Departments of Psychiatry, University of California, San Diego, La Jolla, CA, USA
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Song Y, Hong J, Liu D, Lin Q, Lai G. 1,25-dihydroxyvitamin D3 inhibits nuclear factor kappa B activation by stabilizing inhibitor IκBα via mRNA stability and reduced phosphorylation in passively sensitized human airway smooth muscle cells. Scand J Immunol 2013; 77:109-16. [PMID: 23126502 DOI: 10.1111/sji.12006] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Accepted: 10/10/2012] [Indexed: 10/27/2022]
Abstract
Excessive activation of nuclear transcription factor-κB (NF-κB) is involved in human airway smooth muscle cells (HASMCs) activities in asthma. We investigated the effects of 1,25 - dihydroxyvitamin D3 [1,25 - (OH) 2D3] on the NF- κB signaling pathway in passively sensitized HASMCs and the molecular mechanisms involved. HASMCs were treated with either healthy controls' serum, asthma patients' serum or pretreated with 1,25 - (OH) 2D3 prior to treatment with asthmatics' serum. At 1 h after serum treatment: electrophoretic mobility shift assay (EMSA) was used to detect NF-κB DNA binding activity; immunocytochemical staining was used to observe the nuclear translocation of NF-κB p65; Western blots were used for NF-κB p65, IκBα, and phospho-IκBα protein levels and the nuclear translocation of NF-κB p65; real-time quantitative PCR was used for NF-κB p65 and IκBα mRNA expressions; and actinomycin D treatment was used to determine IκBα mRNA stability. Our major findings were: (1) 1,25 - (OH) 2D3 significantly reduced asthma serum passively sensitized HASMCs NF-κB DNA binding activity and inhibited the nuclear translocation of NF-κB p65; (2) 1,25 - (OH) 2D3 increased the stability of IκBα mRNA with reduced IκBα phosphorylation in asthma serum passively sensitized HASMCs and significantly increased IκBα expression in these HASMCs. Inhibiting NF-κB signalling with 1,25 - dihydroxyvitamin D3 may be a therapeutic approach for controlling HASMC-related remodelling in asthma.
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Affiliation(s)
- Y Song
- Department of Pulmonary and Critical Care Medicine, Fuzhou General Hospital of Nanjing Military Command, Dongfang Hospital, Xiamen University, Fuzhou, China
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Lai G, Nemolato S, Lecca S, Parodo G, Medda C, Faa G. The role of immunohistochemistry in the diagnosis of hyalinizing clear cell carcinoma of the minor salivary gland: a case report. Eur J Histochem 2009; 52:251-4. [PMID: 19109100 DOI: 10.4081/1224] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
A case of hyalinizing clear cell carcinoma (HCCC) of the minor salivary glands of the oral cavity is reported. A 52- year-old woman presented with a growing mass at the base of the tongue. The patient underwent complete resection of the tumour. The histological picture was characterized by trabeculae or solid nests of proliferating cells with a clear cytoplasm, surrounded by a hyalinizing stroma. Tumour cells were immunoreactive for Cytokeratins 5, 6, 7, 8, 14, 17 and 18. No reactivity was observed for cytokeratin 20, vimentin, S- 100 protein, smooth-muscle actin, muscle-specific actin, and calponin. These findings confirmed the diagnosis of HCCC of minor salivary glands of the oral cavity. The clinical presentation, the immunohistochemical pattern and the role of cytokeratins in the differential diagnosis of HCCC are discussed with a review of the literature.
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Affiliation(s)
- G Lai
- Department of Otorhinolaryngology, ASL n.7, Carbonia, Italy.
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Lai G, Müller C. Substances psychotropes et sensibilité périphérique. Eur Neurol 2008. [DOI: 10.1159/000128805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Quek R, Lai G, Tao M, Chan A, Gao F, Yap S, Loong S, Tan L, Sng I, Lim S. 6028 POSTER Late-onset neutropenia is infrequent and self-limiting in patients with diffuse large B-cell lymphoma in complete remission following therapy with rituximab in combination with chemotherapy. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)71319-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Lai G, Akin A, Chan F, Patel A, Hirsch J. Local and global systems revealed in image segmentation during bistable percepts of three ambiguous figures: "Schroeder's Staircase", the "Rubin Face-Vase figure", and the "Ebbecke Ring". J Vis 2005. [DOI: 10.1167/5.8.972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Abstract
AIMS The management of patients with chronic kidney disease in outpatient clinics was assessed for the ability to achieve targets of care advocated in clinical practice guidelines. METHODS 272 records of outpatients with increased serum creatinine (> or = 1.5 mg/dl for women, > or = 2.0 mg/dl for men) were reviewed for details of their assessment and management. Prevailing data on blood pressure, anemia, bone disease and lipid status as well as therapeutic changes were evaluated. RESULTS The subjects were aged 64 +/- 18 years, serum creatinine 2.6 +/- 1.1 mg/dl, and calculated GFR (MDRD formula) 19.2 +/- 9.9 ml/min. Median UproV was 1.0 (0.024 - 12.4) g/day. Causes of CKD were diabetes (33.5%), HTN (8.8%), GN (19.5%), and adult PKD (3.3%). Treatment targets were BP < 130/85 mmHg, Hct > or = 36%, serum Ca++ > or = 8.5 mg/dl, serum Po4 < 4.5 mg/dl and cholesterol < 200 mg/dl. Of the patients with abnormal findings, mean values for SBP were 153 +/- 17 mmHg, DBP 93 +/- 6 mmHg, Hct 31.7 +/- 2.9%, Ca++ 8.0 +/- 0.7 mg/dl, PO4 5.6 +/- 1.0 mg/dl, and cholesterol 236 +/- 37 mg/dl. Only a minority of patients with abnormal values had their treatment altered. Furthermore, only 54% of patients with hypertension were treated with either ACEi or ARB therapy. Finally, only 6% of patients with hypercholesterolemia had fasting lipid levels measured. CONCLUSION This data suggests that treatment of patients with CKD has improved, but that many opportunities exist to optimize their care.
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Affiliation(s)
- R A Lafayette
- Stanford University Medical Center, Division of Nephrology, M211, Department of Medicine, 300 Pasteur Road, Stanford, CA 94305-5114, USA.
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Hirsch J, Egne T, Khalil D, Lai G, Patel A. Long-range cortical systems and local parietal areas engaged during the multiple percepts of bistable figures suggest a role for "highly influential" neural ensembles in perceptual grouping mechanisms: an fMRI investigation. J Vis 2004. [DOI: 10.1167/4.8.254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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McDonagh P, Cerney K, Hokama J, Lai G, Gonzales R, Davis-Gorman G, Copeland J. Perflubron emulsion reduces inflammation during extracorporeal circulation. J Surg Res 2001; 99:7-16. [PMID: 11421598 DOI: 10.1006/jsre.2001.6141] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The recovery from cardiac surgery and cardiopulmonary bypass can be complicated by an acute inflammatory response. Circulating blood through an extracorporeal circuit (ECC) contributes to this complication. Perfluorocarbon-based blood substitutes (PFCs) are under investigation for use as a component of the ECC "prime" solution, because PFCs increase the oxygen-carrying capacity of the diluted blood. Some PFCs may provide the additional benefit of attenuating the ECC-induced inflammatory response. Earlier, we reported that perflubron emulsion (PFE, Alliance Pharmaceutical Corp.) reduced neutrophil (PMN) activation in vivo. However, the potential of PFE to reduce ECC-induced PMN activation has not been investigated. In this study, we used a small-scale ECC model to quantify the extent of PMN activation during circulation and to examine if PFE treatment attenuated PMN activation. ECC circuits were filled with a mixture of blood and Plasmalyte. Two groups were studied: an untreated group containing blood plus PlasmaLyte and a treated group in which some of the Plasmalyte was substituted with PFE (4.5 g/100 ml). Hematology and measures of whole blood PMN activation were made from blood samples taken periodically throughout the 120-min ECC circulation period. We found, for the untreated group, a significant decrease in the number of circulating PMNs and an increase in PMN activation with time. PMN activation was demonstrated as a significant increase in the expression of the PMN adhesion protein CD11b (P < 0.05) and an increase in PMN oxygen free radical production (reactive oxygen species (ROS)). After 120 min of circulation, the PMNs remained capable of a significant response to a second inflammatory stimulus, but PFE treatment significantly attenuated the fMLP-induced increase in PMN ROS at t = 120 min (P < 0.05). These results suggest that PFE may have dual utility in cardiac surgery, to increase oxygen delivery and to serve as an antiinflammatory agent.
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Affiliation(s)
- P McDonagh
- Department of Surgery, Cardiovascular and Thoracic Surgery, Tucson, Arizona 85718, USA.
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Abstract
Recent developments in stress research have called for attention to how social structures influence the stress and coping processes. This paper examines the experience of work stress among professionals in Singapore and argues that workers' experiences in the workplace are influenced not only by individual personality and job nature, but also by structural forces shaping the profession, the social organization of work institutions and the development of the economy. Data were collected from a survey of professionals in Singapore conducted in 1989-1990. The sample consisted of 2570 men and women from six different professions and para-professions, namely general practitioners, lawyers, engineers, teachers, nurses and life insurance personnel. Results showed that performance pressure and work-family conflicts were perceived to be the most stressful aspects of work. These two stressors also significantly contributed to the experience of overall work stress. Further, stress arising from work-family conflicts, performance pressure and poor job prospects was negatively associated with the level of work satisfaction. These findings were discussed in the contexts of increasing professionalization and de-professionalization and the growing emphases on productivity and efficiency in a quickly developing economy.
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Affiliation(s)
- K B Chan
- Department of Sociology, National University of Singapore, Singapore.
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Caiati C, Montaldo C, Zedda N, Montisci R, Ruscazio M, Lai G, Cadeddu M, Meloni L, Iliceto S. Validation of a new noninvasive method (contrast-enhanced transthoracic second harmonic echo Doppler) for the evaluation of coronary flow reserve: comparison with intracoronary Doppler flow wire. J Am Coll Cardiol 1999; 34:1193-200. [PMID: 10520812 DOI: 10.1016/s0735-1097(99)00342-3] [Citation(s) in RCA: 157] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVES We tested the hypothesis that coronary flow reserve (CFR) in the left anterior descending coronary artery (LAD) as assessed by a new noninvasive method (contrast-enhanced transthoracic second harmonic echo Doppler) is in agreement with CFR measurements assessed by intracoronary Doppler flow wire. BACKGROUND Contrast-enhanced transthoracic second harmonic echo Doppler is a novel noninvasive method to detect blood flow velocity and reserve in the LAD. However, it has not yet been validated versus a gold-standard method. METHODS Twenty-five patients undergoing CFR assessment in the LAD by Doppler flow wire were also evaluated by contrast-enhanced transthoracic Doppler to record blood flow in the distal LAD at rest and during hyperemia obtained by adenosine i.v. infusion. In five patients CFR was evaluated twice (before and after angioplasty). RESULTS As a result of the combined use of i.v. contrast and second harmonic Doppler technology, feasibility in assessing coronary flow reserve equaled 100%. The agreement between the two methods was high. In fact, in all but five patients the maximum difference between the two CFR measurements was 0.38. Overall, the prediction (95%) interval of individual differences was -0.69 to +0.72. Reproducibility of CFR measurements was also high. The limits of the agreement (95%) between the two measurements were -0.32 to +0.32. CONCLUSIONS Coronary flow reserve in the LAD as assessed by contrast-enhanced transthoracic echo Doppler along with harmonic mode concurs very closely with Doppler flow wire CFR measurements. This new noninvasive method allows feasible, reliable and reproducible assessment of CFR in the LAD.
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Affiliation(s)
- C Caiati
- Division of Cardiology, S. Maugeri Foundation, IRCCS Medical Center of Rehabilitation, Cassano Murge, Italy.
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Caiati C, Zedda N, Montaldo C, Bina A, Lai G, Cadeddu M, Iliceto S. Feasibility of a new non invasive method for the evaluation of coronary blood flow in the left anterior descending coronary artery: contrast-enhanced transthoracic harmonic echo Doppler. J Am Coll Cardiol 1998. [DOI: 10.1016/s0735-1097(98)81184-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lai G. [The three-dimensional titanium miniplate rigid fixation in the treatment of fracture of maxilla]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 1997; 11:196-8. [PMID: 9867976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The three-dimensional (3-D) Titanium miniplate system is one of the newest internal rigid fixation for the maxillo-mandibular surgery in recent years. The geometry of the plate assures a good stability in the three-dimensions of the fracture sits. Thirty patients suffering from maxillo-mandibular fractures had been operated on using the 3-D Titanium miniplates since 1991. The group of the patient included 16 cases of mandibular fractures, 8 cases of maxillary fractures and 6 cases of maxillo-mandibular fracture. All of the patient had very good result without any complication. The follow-up was 6 months to 3 years. The 3-D Titanium miniplate as an ideal easy to use, good resistance against torque forces and, compact forms of the miniplate were the some of the advantages. Clinical examples had been provided to illustrate the actual usage of the 3-D miniplate in the field of the surgical treatment for the maxillo-mandibular fracture. It is the author's opinion that the internal rigid fixation by 3-D Titanium miniplates is a promising method of treating fractures of the maxilla and is to be better tolerated by the patients and surgeons.
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Affiliation(s)
- G Lai
- Department of Plastic and Maxillo-facial Surgery, Plastic Surgery, Hospital of Chinese Academy of Medical Sciences, Beijin
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Abstract
This article examines the relationship between stress and distress in the life course, emphasizing the time elapsed between the event and measurement of psychological distress. Stressors are conceptualized as either distal or proximal based on how recently they occurred. Distal stressors are further classified as status changes or undesirable life changes. Using a life history calendar approach, we examine stressors occurring over a 15-year-period. We explore whether distal stressors affect current depressive symptomatology above and beyond the effect of more recent stressors and how these stressors vary in frequency and affect over 3 empirically defined age groups. While some events decrease in frequency over age, others occur consistently across age groups. Most important, distal stressors significantly impact current depressive symptomatology, independent of proximal stressors. Types of distal stressors affecting depression vary over age, indicating that the stage of life at which a stressor occurs is a significant determinant of the stressor's effect on depression.
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Affiliation(s)
- W M Ensel
- State University of New York at Albany, USA
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Potempa LA, Motie M, Wright KE, Crump BL, Radosevich JA, Sakai N, Lai G, Tanaka K, Kojima E, Tsuboi A, Hua LG. Stimulation of megakaryocytopoiesis in mice by human modified C-reactive protein (mCRP). Exp Hematol 1996; 24:258-64. [PMID: 8641350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The prototypic human acute phase reactant, C-reactive protein (CRP), and a structurally modified form of CRP (mCRP) were studied as agents which could stimulate thrombopoiesis in both in vitro and in vivo mouse models. mCRP, but not the widely studied (native) pentameric form of CRP, demonstrated significant megakaryocyte colony-stimulating activity. This activity was measured in plasma clot cultures incubated with pokeweed mitogen-stimulated spleen cell conditioned medium (PWM-SCM). mCRP increased the number of mouse megakaryocyte colonies in a dose-dependent manner. While significantly more colonies were observed in mCRP-treated cultures compared to controls, the kinetics of megakaryocyte growth and maturation were similar to those measured in cultures stimulated with PWM-SCM lacking mCRP. A low level of megakaryocyte growth-promoting activity was noted when mCRP was added to plasma clot cultures not incubated with spleen cell conditioned medium. However, the most striking activity of mCRP was in potentiating stimulated megakaryocyte colony formation (i.e., as a Meg-POT factor). In in vivo experiments, mCRP injected subcutaneously into normal mice resulted in significant increases in blood platelet numbers compared to control mice receiving sham injections. These results suggest that a modified form of CRP has thrombopoietic activity in both in vitro and in vivo mouse models, Therefore, one important biological role for CRP during an acute-phase response might be to contribute, after a structural modification, to the hematopoietic regulation of blood platelets.
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Affiliation(s)
- L A Potempa
- Immtech International, Evanston, IL 60201, USA
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Abstract
The stress-distress model is examined in the context of a Chinese urban center, Tianjin. Conceptually, the relationship between stress (as reflected in life events) and distress (as reflected in depressed symptoms) is hypothesized to hold across societies. At the same time, the measures of stress must reflect the social reality of a particular community of society. In the case of urban China, the politically-imposed stratification system arranges individuals and family lives around work units. These work units dictate all aspects of the life of the worker and his or her family, ranging from housing, major purchases, access to local and distance facilities, schooling and employment for children, to retirement pension and funeral expenses. As a result, relationships in the work context are expected to produce stress-inducing conflicts. Results from a community survey of Tianjin residents in 1986 support both the generality of the stress-distress model and the specificity of the effects of work-related stressors.
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Affiliation(s)
- N Lin
- Department of Sociology, Duke University, Durham, NC 27708-0088, USA
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Lai G. Work and family roles and psychological well-being in urban China. J Health Soc Behav 1995; 36:11-37. [PMID: 7738326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A theoretical framework that delineates the relationships between work and family roles and psychological well-being is derived from U.S. research and utilized to examine the relationships of work and family stress with psychological well-being in urban China. Data from a sample of 733 married and employed individuals in urban Shanghai confirm the general model of the link between work and family stress and psychological distress. Due to the centrality of work roles for the Chinese, work stress exerts a stronger relationship on psychological well-being than does family stress. Furthermore, the Chinese are more vulnerable to stress arising from interpersonal conflicts than from role demands. In addition, gender differences are found in the relationship between role stress and distress. Women tend to experience more family demands than men. Women's mental health status is tied similarly to stress arising from work and family roles, whereas men are more vulnerable to work stress than family stress. However, Chinese women do not report significantly greater generalized distress than men.
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Affiliation(s)
- G Lai
- Department of Sociology, Duke University, Durham, NC 27708-0088, USA
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onti M, Osti FM, De Antoni E, Vergine M, Colio B, Pasta V, Palazzini G, Lucci S, Lai G, Grilli P. [Surgical repair of laparocele with expanded PTFE: technicalities]. G Chir 1994; 15:503-10. [PMID: 7727216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Surgical repair of ventral hernias may often be quite difficult; however, the use of prosthesis, now generally accepted by many surgeons, has improved the results of such type of surgery. The Authors experience confirm the safety of the expanded PTFE and its versatility of employment, obtaining good functional and aesthetic results.
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Affiliation(s)
- M onti
- Istituto di III Clinica Chirurgica Generale e Terapia Chirurgica, Università degli Studi La Sapienza, Roma
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