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Your search keyword '"Guglielmetti, Simone"' showing total 17 results
Start Over Author "Guglielmetti, Simone" Journal applied and environmental microbiology
17 results on '"Guglielmetti, Simone"'

2. Oral bacteria as potential probiotics for the pharyngeal mucosa

Author

Guglielmetti, Simone, Taverniti, Valentina, Minuzzo, Mario, Arioli, Stefania, Stuknyte, Milda, Karp, Matti, and Mora, Diego

Subjects
Probiotics -- Research, Streptococcus -- Genetic aspects, Streptococcus -- Physiological aspects, Biological sciences
Abstract

Newly isolated fifty six bacteria from the pharynges of healthy donors were identified at the intraspecies level and characterized in vitro to gain insight into their probiotic potential for the pharyngeal mucosa. The selected commensal streptococci which represented potential pharyngeal candidates exhibited a good degree of adaptation to the host and possess potential immunomodulatory and anti-inflammatory properties.

Published
2010

3. Implication of an outer surface lipoprotein in adhesion of Bifidobacterium bifidum to caco-2 cells

Author

Guglielmetti, Simone, Tamagnini, Isabella, Mora, Diego, Minuzzo, Mario, Scarafoni, Alessio, Arioli, Stefania, Hellman, Jukka, Karp, Matti, and Parini, Carlo

Subjects
Bifidobacterium -- Physiological aspects, Epithelial cells -- Analysis, Biological sciences
Abstract

A study was conducted to identify a cell surface lipoprotein MIMBb75 and BopA from Bifidobacterium bifidum that affect the production of interleukin-8 (IL-8) in Caco-2 epithelial cells. The BopA protein was found to play a key role in the adhesion of bifidobacteria to Caco-2 cells and also show immunomodulatory activity.

Published
2008

4. Bacterial cinnamoyl esterase activity screening for the production of a novel functional food product

Author

Guglielmetti, Simone, de Noni, Ivano, Caracciolo, Frederica, Molinari, Francesco, Parini, Carlo, and Mora, Diego

Subjects
Antioxidants -- Chemical properties, Caffeine -- Chemical properties, Esterases -- Chemical properties, Lactobacillus -- Genetic aspects, Lactobacillus -- Physiological aspects, Probiotics -- Research, Biological sciences
Abstract

Lactobacillus helveticus MIMLh5 is selected for its strong cinnamoyl esterase activity on chlorogenic acid and used for the preparation of a food product containing a high concentration of free caffeic acid. The novel food product has displayed high total antioxidant power and potential probiotic properties.

Published
2008

5. Aspartate biosynthesis is essential for the growth of Streptococcus thermophilus in milk, and aspartate availability modulates the level of urease activity

Author

Arioli, Stefania, Monnet, Christophe, Guglielmetti, Simone, Parini, Carlo, De Noni, Ivano, Hogenboom, Johannes, Halami, Prakash M., and Mora, Diego

Subjects
Hydrolases -- Properties, Enzymes -- Properties, Hydrolysis -- Analysis, Microbial metabolism -- Research, Streptococcus -- Physiological aspects, Streptococcus -- Genetic aspects, Biological sciences
Abstract

The carbon dioxide metabolism of Streptococcus thermophilus is examined to evaluate the phenotype of a phosphoenolpyruvate carboxylase-negative mutant obtained by replacement of a functional ppc gene with a deleted and inactive version. Results reveal that aspartate in the milk is not enough for the growth of Streptococcus thermophilus.

Published
2007

7. Unusual organization for lactose and galactose gene clusters in Lactobacillus helveticus

Author

Fortina, Maria Grazia, Ricci, Giovanni, Mora, Diego, Guglielmetti, Simone, and Manachini, Pier Luigi

Subjects
Microbiology -- Research, Microbial populations -- Environmental aspects, Microbial populations -- Genetic aspects, Lactose -- Physiological aspects, Lactose -- Genetic aspects, Beta galactosidases -- Physiological aspects, Nucleotides -- Genetic aspects, Lactobacillus -- Genetic aspects, Gene expression -- Physiological aspects, Overlapping genes, Biological sciences
Abstract

Research has been conducted on organization and location of lac genes in Lactobacillus helveticus.The authors describe the identification of partially overlapping genes which encode L. helveticus beta-galactosidase, and a gene encoding lactose permease, and discuss the nucleotide sequence of these genes.

Published
2003

9. TgaA, a VirB1-Like Component Belonging to a Putative Type IV Secretion System of Bifidobacterium bifidum MIMBb75

Author

Guglielmetti, Simone, primary, Balzaretti, Silvia, additional, Taverniti, Valentina, additional, Miriani, Matteo, additional, Milani, Christian, additional, Scarafoni, Alessio, additional, Corona, Silvia, additional, Ciranna, Alessandro, additional, Arioli, Stefania, additional, Santala, Ville, additional, Iametti, Stefania, additional, Bonomi, Francesco, additional, Ventura, Marco, additional, Mora, Diego, additional, and Karp, Matti, additional

Published
2014
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10. Murein Lytic Enzyme TgaA of Bifidobacterium bifidum MIMBb75 Modulates Dendritic Cell Maturation through Its Cysteine- and Histidine-Dependent Amidohydrolase/Peptidase (CHAP) Amidase Domain

Author

Guglielmetti, Simone, primary, Zanoni, Ivan, additional, Balzaretti, Silvia, additional, Miriani, Matteo, additional, Taverniti, Valentina, additional, De Noni, Ivano, additional, Presti, Ilaria, additional, Stuknyte, Milda, additional, Scarafoni, Alessio, additional, Arioli, Stefania, additional, Iametti, Stefania, additional, Bonomi, Francesco, additional, Mora, Diego, additional, Karp, Matti, additional, and Granucci, Francesca, additional

Published
2014
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11. Bifidobacterium bifidum PRL2010 Modulates the Host Innate Immune Response

Author

Turroni, Francesca, primary, Taverniti, Valentina, additional, Ruas-Madiedo, Patricia, additional, Duranti, Sabrina, additional, Guglielmetti, Simone, additional, Lugli, Gabriele Andrea, additional, Gioiosa, Laura, additional, Palanza, Paola, additional, Margolles, Abelardo, additional, van Sinderen, Douwe, additional, and Ventura, Marco, additional

Published
2014
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14. S-Layer Protein Mediates the Stimulatory Effect of Lactobacillus helveticus MIMLh5 on Innate Immunity

Author

Taverniti, Valentina, primary, Stuknyte, Milda, additional, Minuzzo, Mario, additional, Arioli, Stefania, additional, De Noni, Ivano, additional, Scabiosi, Christian, additional, Cordova, Zuzet Martinez, additional, Junttila, Ilkka, additional, Hämäläinen, Sanna, additional, Turpeinen, Hannu, additional, Mora, Diego, additional, Karp, Matti, additional, Pesu, Marko, additional, and Guglielmetti, Simone, additional

Published
2013
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17. In Vitro Functional and Immunomodulatory Properties of the Lactobacillus helveticus MIMLh5-Streptococcus salivarius ST3 Association That Are Relevant to the Development of a Pharyngeal Probiotic Product

Author

Taverniti, Valentina, primary, Minuzzo, Mario, additional, Arioli, Stefania, additional, Junttila, Ilkka, additional, Hämäläinen, Sanna, additional, Turpeinen, Hannu, additional, Mora, Diego, additional, Karp, Matti, additional, Pesu, Marko, additional, and Guglielmetti, Simone, additional

Published
2012
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