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Zarowski A, Fuentes MC, Schaudel D, Leblans M, De Coninck L, Theunen T, Vermeiren A, Verschoren L, van Dinther J, Offeciers EF. Intraoperative recordings of electromyogenic responses from the human stapedius muscle. Hear Res 2021; 408:108290. [PMID: 34233241 DOI: 10.1016/j.heares.2021.108290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 04/16/2021] [Accepted: 06/02/2021] [Indexed: 10/21/2022]
Abstract
Following surgical implantation of a cochlear implant, the external processor must be programmed individually, which is typically achieved by behavioral measurements, with the user indicating the perceived loudness between the threshold and the maximum comfort levels (MCLs). However, the stapedius reflex measurement could be used instead, as the basis for programming the fitting maps. The electrically evoked stapedius reflex threshold is known to have a high correlation with the MCLs and thus is used as an objective tool to determine the MCL, especially in children and non-cooperative patients. Previous studies demonstrated that the electromyogenic (EMG) activity of the stapedius muscle could be measured to determine stapedius reflex responses. The objective of this study was to demonstrate that intraoperative EMG recordings from the stapedius muscle could be performed with an EMG recording electrode designed for chronical implantation. Ten adult subjects with single sided deafness (SSD) participated in this study. The study was split up into a pre-, intra- and postoperative phase. In the preoperative phase the subjects were screened for the presence of the acoustic stapedius reflex by using a standard tympanometer in the ear to be implanted, while the contralateral ear was stimulated acoustically. During the intraoperative phase an EMG recording electrode was placed in the stapedius muscle and EMG responses were recorded during acoustical and electrical stimulation. The surgical procedure consisted of two interconnected procedures: A classical surgical approach for cochlear implantation with two additional surgical steps, and the temporary placement of an EMG recording electrode in the stapedius muscle made through an opening in the pyramidal eminence, allowing EMG recordings. The postoperative phase was used to evaluate the preservation of the stapedius reflex postoperatively at 1- and 6-months with contralateral acoustic and ipsilateral electrical stimulation. The EMG recording electrode could successfully be placed in the stapedius muscle in all subjects and was able to reliably record EMG signals from the stapedius muscle elicited by acoustic and electrical stimulation. Overall, EMG recordings were obtained intraoperatively in all subjects tested (8 out of 8 subjects). Contralateral acoustic stapedius reflexes were obtained in 6 out of 8 subjects and ipsilateral electrical stapedius reflex in 7 out of 8 subjects. In the postoperative phase, the preservation of the postoperative reflex was observed in 6 out of 10 subjects 1-month after surgery and in 8 out of 10 subjects 6-months after surgery. The study showed that intraoperative EMG recordings from the stapedius muscle can be performed with an EMG recording electrode designed for chronical implantation. The minimally invasive procedure is promising; in particular with regard to the future perspective of measurements in the long-term with an integrated closed-loop self-fitting system.
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Affiliation(s)
- A Zarowski
- European Institute of Otorhinolaryngology, Antwerp, Belgium.
| | - M C Fuentes
- MED-EL Headquarters Innsbruck, Fuerstenweg 77a, 6020 Innsbruck, Austria
| | - D Schaudel
- MED-EL Headquarters Innsbruck, Fuerstenweg 77a, 6020 Innsbruck, Austria
| | - M Leblans
- European Institute of Otorhinolaryngology, Antwerp, Belgium
| | - L De Coninck
- European Institute of Otorhinolaryngology, Antwerp, Belgium
| | - T Theunen
- European Institute of Otorhinolaryngology, Antwerp, Belgium
| | - A Vermeiren
- European Institute of Otorhinolaryngology, Antwerp, Belgium
| | - L Verschoren
- MED-EL BE, Lambroekstraat 5A - BLOOMZ, 1831 Diegem, Belgium
| | - J van Dinther
- European Institute of Otorhinolaryngology, Antwerp, Belgium
| | - E F Offeciers
- European Institute of Otorhinolaryngology, Antwerp, Belgium
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Lorén V, Manyé J, Fuentes MC, Cabré E, Ojanguren I, Espadaler J. Comparative Effect of the I3.1 Probiotic Formula in Two Animal Models of Colitis. Probiotics Antimicrob Proteins 2018; 9:71-80. [PMID: 27832441 DOI: 10.1007/s12602-016-9239-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Use of probiotic therapy is an active area of investigation to treat intestinal disorders. The clinical benefits of the I3.1 probiotic formula (Lactobacillus plantarum (CECT7484, CECT7485) and P. acidilactici (CECT7483)) were demonstrated in irritable bowel syndrome (IBS) patients in a randomized, double-blind, placebo-controlled clinical trial. The aim of this study was to evaluate the therapeutic effects of I3.1 in two experimental models of colitis, a dextran sulfate sodium (DSS)-induced colitis model and an interleukin (IL)-10-deficient mice model. Colitis was induced in 32 8-week-old Balb/c mice by administering 3% (w/v) DSS in drinking water for 5 days. Probiotics were administered orally (I3.1 or VSL#3, 1 × 109 CFU daily) for 10 days before the administration of DSS. Also, probiotics (I3.1 or VSL#3, 1 × 109 CFU daily) were administered orally to 36 6-week-old C57B6J IL-10(-/-) mice for 10 weeks. Body weight was recorded daily. Colon samples were harvested for histological examination and cytokine measurements. Body weight after DSS administration did not change in the I3.1 group, whereas the VSL#3 group had weight loss. Also, I3.1 normalized IL-6 to levels similar to that of healthy controls and significantly increased the reparative histologic score. In the IL-10-deficient model, both VSL#3 and I3.1 reduced the severity of colitis compared to untreated controls, and I3.1 significantly reduced the levels of IFN-γ compared to the other two groups. In conclusion, I3.1 displays a protective effect on two murine models of experimental colitis. Results suggest that the mechanism of action could be different from VSL#3.
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Affiliation(s)
- Violeta Lorén
- Health Sciences Research Institute, University Hospital "Germans Trias i Pujol", Ctra. de Can Ruti. Cami de les escoles s/n, 08916, Badalona, Spain
- CIBER-EHD, 28029, Madrid, Spain
| | - Josep Manyé
- Health Sciences Research Institute, University Hospital "Germans Trias i Pujol", Ctra. de Can Ruti. Cami de les escoles s/n, 08916, Badalona, Spain.
- CIBER-EHD, 28029, Madrid, Spain.
| | - Mari C Fuentes
- AB-Biotics S.A, Autonomous University of Barcelona, Eureka Building, 08193, Bellaterra, Spain
| | - Eduard Cabré
- CIBER-EHD, 28029, Madrid, Spain
- IBD Unit, Gastroenterology Department, University Hospital "Germans Trias i Pujol", 08916, Badalona, Spain
| | - Isabel Ojanguren
- Pathology Department, University Hospital "Germans Trias i Pujol", 08916, Badalona, Spain
| | - Jordi Espadaler
- AB-Biotics S.A, Autonomous University of Barcelona, Eureka Building, 08193, Bellaterra, Spain
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Fuentes MC, Lajo T, Carrión JM, Cuñé J. A randomized clinical trial evaluating a proprietary mixture of Lactobacillus plantarum strains for lowering cholesterol1. MNM 2016. [DOI: 10.3233/mnm-160065] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Mari C. Fuentes
- AB-BIOTICS S.A., Cerdanyola del Vallès, Edifici Eureka, Campus UAB, Bellaterra, Spain
| | - Teresa Lajo
- Department of Endocrinology and Nutrition, Moncloa Hospital, Madrid, Spain
| | - Juan M. Carrión
- Department of Endocrinology and Nutrition, Torrelodones University Hospital, Torrelodones-Madrid, Spain
| | - Jordi Cuñé
- AB-BIOTICS S.A., Cerdanyola del Vallès, Edifici Eureka, Campus UAB, Bellaterra, Spain
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Bosch M, Fuentes MC, Audivert S, Bonachera MA, Peiró S, Cuñé J. Lactobacillus plantarum CECT 7527, 7528 and 7529: probiotic candidates to reduce cholesterol levels. J Sci Food Agric 2014; 94:803-809. [PMID: 24186773 DOI: 10.1002/jsfa.6467] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 10/22/2013] [Accepted: 11/01/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND Hypercholesterolaemia plays a key role in the development and progression of coronary artery disease. There are numerous drugs available to treat this condition but they are often expensive and can have unwanted side effects. Therefore, a screening of lactic acid bacteria to select candidate probiotic strains to reduce cholesterol levels was carried out. Three Lactobacillus plantarum strains (CECT 7527, 7528 and 7529) were selected as potential probiotics to reduce cholesterol levels after conducting several in vitro tests for demonstrating the functionalities of the strains according to international guidelines. RESULTS The three strains showed a high ability to survive under gastrointestinal tract conditions and to adhere to intestinal cells. Regarding lipid metabolism, the strains showed a great production of bile salt hydrolase, especially when combined. Moreover, the strains assimilated cholesterol directly from the medium. Part of the cholesterol present in the medium was removed via binding onto the bacterial cellular surface. Finally, the three strains, especially CECT 7529, produce large quantities of propionic and butyric acids. CONCLUSION Combined, these characteristics suggest that these strains could be excellent candidates for reducing high blood cholesterol levels.
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Affiliation(s)
- Montserrat Bosch
- AB-BIOTICS SA, Masia Can Fatjó del Molí, s/n, 08290, Cerdanyola del Vallès, Spain
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Soler C, Sancho M, García A, Fuentes MC, Núñez J, Cucho H. Ejaculate Fractioning Effect on Llama Sperm Head Morphometry as Assessed by the
ISAS
®
CASA
system. Reprod Domest Anim 2013; 49:71-8. [DOI: 10.1111/rda.12226] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 07/09/2013] [Indexed: 12/01/2022]
Affiliation(s)
- C Soler
- Biologia Funcional i Antropologia Física Universitat de València Burjassot Spain
| | | | | | | | - J Núñez
- Biologia Funcional i Antropologia Física Universitat de València Burjassot Spain
| | - H Cucho
- Carrera de Zootecnia Universidad Nacional de San Antonio Abad del Cusco Cusco Peru
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Bosch M, Méndez M, Pérez M, Farran A, Fuentes MC, Cuñé J. Lactobacillus plantarum CECT7315 and CECT7316 stimulate immunoglobulin production after influenza vaccination in elderly. NUTR HOSP 2012; 27:504-9. [PMID: 22732975 DOI: 10.1590/s0212-16112012000200023] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Accepted: 11/15/2011] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE The effectiveness of influenza vaccination in preventing illness is lower in the elderly; this is why the ability of Lactobacillus plantarum CECT 7315/7316 to stimulate the response to influenza vaccination in elderly was evaluated. RESEARCH METHODS AND PROCEDURES A randomized, double-blind, placebo-controlled human trial including 60 institutionalized volunteers aged 65-85 years was performed. All the volunteers were vaccinated with a trivalent influenza vaccine (A/Wisconsin/67/2005 NYMC X-161B (H3N2), A/Solomon Islands/3/2006 (H1N1) and B/Malaysia/2506/2004) for the Spanish vaccine campaign 2006/2007. The consumption of the probiotic began between three and four months after the vaccination. Volunteers were randomly assigned to one of three following groups: group A (receiving 5*10(9) cfu/day of L. plantarum CECT 7315/7316 in 20 g powdered skim milk), group B (receiving 5*10(8) cfu/day of L. plantarum CECT 7315/7316 in 20 g powdered skim milk) and group C or placebo (20 g powered skim milk). The participants consumed the probiotic during 3 months. RESULTS The consumption of L. plantarum CECT 7315/7316 during 3 months after influenza vaccination increased the levels of influenza-specific IgA and IgG antibodies. Moreover, a trend towards an increase in influenza-specific IgM antibodies was also observed. CONCLUSION L. plantarum CECT7315/7316 has an immunostimulating effect and could be used to improve the response to influenza vaccination in elderly.
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Affiliation(s)
- M Bosch
- AB-Biotics, S. A, Cerdañola del Vallés, Spain
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Fuentes MC, Pijoan C. Pneumonia in pigs induced by intranasal challenge exposure with pseudorabies virus and Pasteurella multocida. Am J Vet Res 1987; 48:1446-8. [PMID: 3674553] [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: 01/06/2023]
Abstract
The interaction between pseudorabies virus (PRV) and Pasteurella multocida was investigated to determine whether single or combined infections result in pneumonia in 6- to 7-week-old pigs. The effect of the PRV-P multocida challenge exposure on feed consumption, rate of gain, and extent of pneumonic lesions appeared dependent on the PRV dose; however, pneumonic lesions were of bacterial pneumonia. Pigs inoculated with a virulent strain of PRV plus P multocida developed severe pneumonia, whereas pigs given PRV only did not develop pneumonia. Modified-live PRV vaccine had no effect on the occurrence of pneumonia. Average daily gain was most depressed in pigs given the highest dose of virulent PRV plus P multocida.
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Affiliation(s)
- M C Fuentes
- Faculty of Veterinary Medicine, Universidad Nacional Autonoma de Mexico, Mexico City
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