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Konz T, Monnard C, Restrepo MR, Laval J, Sizzano F, Girotra M, Dammone G, Palini A, Coukos G, Rezzi S, Godin JP, Vannini N. Multielemental Analysis of Low-Volume Samples Reveals Cancer-Specific Profile in Serum and Sorted Immune Cells. Anal Chem 2020; 92:8750-8758. [PMID: 32460479 DOI: 10.1021/acs.analchem.9b05643] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We developed and validated a reliable, robust, and easy-to-implement quantitative method for multielemental analysis of low-volume samples. Our ICP-MS-based method comprises the analysis of 20 elements (Mg, P, S, K, Ca, V, Cr, Mn, Fe, Co, Cu, Zn, Se, Br, Rb, Sr, Mo, I, Cs, and Ba) in 10 μL of serum and 12 elements (Mg, S, Mn, Fe, Co, Cu, Zn Se, Br, Rb, Mo, and Cs) in less than 250 000 cells. As a proof-of-concept, we analyzed the elemental profiles of serum and sorted immune T cells derived from naı̈ve and tumor-bearing mice. The results indicate a tumor systemic effect on the elemental profiles of both serum and T cells. Our approach highlights promising applications of multielemental analysis in precious samples such as rare cell populations or limited volumes of biofluids that could provide a deeper understanding of the essential role of elements as cofactors in biological and pathological processes.
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Affiliation(s)
- Tobias Konz
- Nestlé Research, Vers-chez-les-Blanc, Lausanne 1000, Switzerland
| | - Caroline Monnard
- Nestlé Research, Vers-chez-les-Blanc, Lausanne 1000, Switzerland
| | - Marcela Rincon Restrepo
- Laboratory of Immunosenscence and Stem Cell Metabolism, Department of Oncology UNIL CHUV, Ludwig Institute for Cancer Research Lausanne, University of Lausanne, Epalinges 1066, Switzerland
| | - Julie Laval
- Nestlé Research, Vers-chez-les-Blanc, Lausanne 1000, Switzerland
| | - Federico Sizzano
- Nestlé Research, EPFL Innovation Park, Lausanne 1015, Switzerland
| | - Mukul Girotra
- Laboratory of Immunosenscence and Stem Cell Metabolism, Department of Oncology UNIL CHUV, Ludwig Institute for Cancer Research Lausanne, University of Lausanne, Epalinges 1066, Switzerland
| | - Gabriele Dammone
- Nestlé Research, EPFL Innovation Park, Lausanne 1015, Switzerland
| | - Alessio Palini
- Nestlé Research, EPFL Innovation Park, Lausanne 1015, Switzerland
| | - George Coukos
- Human Integrated Tumor Immunology Discovery Engine, Department of Oncology UNIL CHUV, Ludwig Institute for Cancer Research Lausanne, University of Lausanne, Epalinges 1066, Switzerland
| | - Serge Rezzi
- Nestlé Research, Vers-chez-les-Blanc, Lausanne 1000, Switzerland
| | | | - Nicola Vannini
- Laboratory of Immunosenscence and Stem Cell Metabolism, Department of Oncology UNIL CHUV, Ludwig Institute for Cancer Research Lausanne, University of Lausanne, Epalinges 1066, Switzerland
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Konz T, Santoro A, Goulet L, Bazzocchi A, Battista G, Nicoletti C, Kadi F, Ostan R, Goy M, Monnard C, Martin FP, Feige JN, Franceschi C, Rezzi S. Sex-Specific Associations of Blood-Based Nutrient Profiling With Body Composition in the Elderly. Front Physiol 2019; 9:1935. [PMID: 30733685 PMCID: PMC6353856 DOI: 10.3389/fphys.2018.01935] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 12/21/2018] [Indexed: 12/12/2022] Open
Abstract
The intake of adequate amounts and types of nutrients is key for sustaining health and a good quality of life, particularly in the elderly population. There is considerable evidence suggesting that physiological changes related to age and sex modify nutritional needs, and this may be related to age-associated changes in body composition (BC), specifically in lean and fat body mass. However, there is a clear lack of understanding about the association of nutrients in blood and BC parameters in the elderly. This study investigated the relationships among blood nutrients (amino acids, fatty acids, major elements, trace-elements, and vitamins), BC and nutrient intake in a population of 176 healthy male and female Italian adults between the ages of 65 and 79 years. 89 blood markers, 77 BC parameters and dietary intake were evaluated. Multivariate data analysis was applied to infer relationships between datasets. As expected, the major variability between BC and the blood nutrient profile (BNP) observed was related to sex. Aside from clear sex-specific differences in BC, female subjects had higher BNP levels of copper, copper-to-zinc ratio, phosphorous and holotranscobalamin II and lower concentrations of branched-chain amino acids (BCAAs) and proline. Fat mass, percentage of fat mass, percentage of lean mass and the skeletal muscle index (SMI) correlated the most with BNP in both sexes. Our data showed positive correlations in male subjects among ethanolamine, glycine, albumin, and sulfur with SMI, while palmitoleic acid and oleic acid exhibited negative correlations. This differed in female subjects, where SMI was positively associated with albumin, folic acid and sulfur, while CRP, proline and cis-8,11,14-eicosatrienoic acid were negatively correlated. We investigated the influence of diet on the observed BNP and BC correlations. Intriguingly, most of the components of the BNP, except for folate, did not exhibit a correlation with nutrient intake data. An understanding of the physiological and biochemical processes underpinning the observed sex-specific correlations between BNP and BC could help in identifying nutritional strategies to manage BC-changes in aging. This would contribute to a deeper understanding of aging-associated nutritional needs with the aim of helping the elderly population to maintain metabolic health.
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Affiliation(s)
- Tobias Konz
- Nestlé Research, Vers-Chez-Les-Blanc, Lausanne, Switzerland
| | - Aurelia Santoro
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- C.I.G. Interdepartmental Centre “L. Galvani”, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | | | - Alberto Bazzocchi
- Diagnostic and Interventional Radiology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Giuseppe Battista
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Claudio Nicoletti
- Department of Experimental and Clinical Medicine, Section of Anatomy, University of Florence, Florence, Italy
- Gut Health Institute Strategic Programme, Quadram Institute Bioscience, Norwich, United Kingdom
| | - Fawzi Kadi
- School of Health and Medical Sciences, Örebro University, Örebro, Sweden
| | - Rita Ostan
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- C.I.G. Interdepartmental Centre “L. Galvani”, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Michael Goy
- Nestlé Research, EPFL Innovation Park, Lausanne, Switzerland
| | | | | | - Jerome N. Feige
- Nestlé Research, EPFL Innovation Park, Lausanne, Switzerland
| | - Claudio Franceschi
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- Institute of Neurological Sciences (IRCCS), Bologna, Italy
| | - Serge Rezzi
- Nestlé Research, Vers-Chez-Les-Blanc, Lausanne, Switzerland
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Monnard C, Soldati D, Monnier P. Outpatient ENT surgery in an academic center: one and a half year's experience. Acta Otorhinolaryngol Belg 1999; 53:99-103. [PMID: 10427361] [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: 02/13/2023]
Abstract
UNLABELLED OBJECTIVE/PROBLEM: Evaluation of the early phase of an ENT outpatient surgery programme. STUDY DESIGN Between May 1995 and December 1996, 452 ENT outpatient operations were carried out on 416 patients. In order to determine the patients' satisfaction as well as the types and frequency of complications associated with ambulatory procedures, an 18 item multiple choice questionnaire was sent to all patients. RESULTS Replies were received from almost 80% of the patients. The great majority of patients were satisfied with their operation and would recommend it to friends and relatives. Ten percent of the patients had to be hospitalised for longer than originally expected. The reasons for these prolonged stays are described. CONCLUSIONS Our results show that procedures performed on an outpatient basis do not differ from similar in patient procedures with regard to the types and frequency of complications. Medical expenses are reduced from 200-400% depending on the type of operation. In the present climate of tighter economic controls, the feasibility of lowering medical costs substantially without compromising patient care deserves our utmost attention.
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Affiliation(s)
- C Monnard
- Clinique ORL et Chirurgie Cervico-Faciale, CHU Vaudois, Lausanne, Suisse
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Monnard C, Vernet M. [Lactoferrin: biochemistry, physiological roles, and value in human biology]. Pathol Biol (Paris) 1988; 36:933-9. [PMID: 3059280] [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: 01/03/2023]
Abstract
Lactoferrin and transferrin exhibit very similar structure and biochemical properties but they behave as two distinct antigens and their affinity for ferric ions is not of the same magnitude. The biological functions of lactoferrin are not all well understood. It has strong bacteriostatic properties, it plays a role as a regulator of human granulopoiesis and it is probably involved in the hyposideremia of acute inflammation. Measurement of lactoferrin was first applied in pancreatic juice or duodenal fluid as a diagnostic tool for pancreatic diseases. More recently plasma lactoferrin has been used as an index of total circulating neutrophil pool in hematological disorders and in uremic patients during hemodialysis. Its clinical usefulness is still discussed for the early diagnostic of infectious diseases.
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Affiliation(s)
- C Monnard
- Laboratoire de Biochimie, Hôpital de la Croix-Rousse, Lyon, France
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Monnard C, Vernet M. [Determination of plasma lactoferrin by the "double sandwich" immunoenzymatic method in heterogeneous phase]. Pathol Biol (Paris) 1988; 36:941-4. [PMID: 3059281] [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: 01/03/2023]
Abstract
For the determination of lactoferrin in human plasma we describe a double-sandwich immunoenzymatic assay in 3 steps using tubes as the solid phase. The analytical performances are acceptable. Within-run and between-run CVs are respectively 4% and 13%, the lower limit of detection is 8 micrograms/l. Sensitivity and specificity are good. The influence on lactoferrin concentration of time elapsing from blood sampling to separation of plasma from cells was studied in order to define the optimal conditions of storage and centrifugation. The range of concentration obtained on 22 healthy adults lies between 59 and 345 micrograms/l.
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Affiliation(s)
- C Monnard
- Laboratoire de Biochìmie, Hôpital de la Croix-Rousse, Lyon, France
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