Bibliografie tematiche / Streptococcus constellatus

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Letteratura scientifica selezionata sul tema "Streptococcus constellatus"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 18 febbraio 2022

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Articoli di riviste sul tema "Streptococcus constellatus"

1

Chiang, W. C., J. C. Tsai, S. Y. Chen, C. Y. Hsu, C. T. Wu, L. J. Teng e P. R. Hsueh. "Mycotic Aneurysm Caused by Streptococcus constellatus subsp. constellatus". Journal of Clinical Microbiology 42, n. 4 (1 aprile 2004): 1826–28. http://dx.doi.org/10.1128/jcm.42.4.1826-1828.2004.

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2

Tabata, Atsushi, Yuji Sato, Kentaro Maya, Kota Nakano, Ken Kikuchi, Robert A. Whiley, Kazuto Ohkura, Toshifumi Tomoyasu e Hideaki Nagamune. "A streptolysin S homologue is essential for β-haemolytic Streptococcus constellatus subsp. constellatus cytotoxicity". Microbiology 160, n. 5 (1 maggio 2014): 980–91. http://dx.doi.org/10.1099/mic.0.075580-0.

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Abstract (sommario):
Streptococcus constellatus is a member of the Anginosus group streptococci (AGS) and primarily inhabits the human oral cavity. S. constellatus is composed of three subspecies: S. constellatus subsp. constellatus (SCC), S. constellatus subsp. pharyngis and the newly described subspecies S. constellatus subsp. viborgensis. Although previous studies have established that SCC contains β-haemolytic strains, the factor(s) responsible for β-haemolysis in β-haemolytic SCC (β-SCC) has yet to be clarified. Recently, we discovered that a streptolysin S (SLS) homologue is the β-haemolytic factor of β-haemolytic Streptococcus anginosus subsp. anginosus (β-SAA), another member of the AGS. Furthermore, because previous studies have suggested that other AGS species, except for Streptococcus intermedius, do not possess a haemolysin(s) belonging to the family of cholesterol-dependent cytolysins, we hypothesized that, as with β-SAA, the SLS homologue is the β-haemolytic factor of β-SCC, and therefore aimed to investigate and characterize the haemolytic factor of β-SCC in the present study. PCR amplification revealed that all of the tested β-SCC strains were positive for the sagA homologue of SCC (sagA SCC). Further investigations using β-SCC strain W277 were conducted to elucidate the relationship between sagA SCC and β-haemolysis by constructing sagA SCC deletion mutants, which completely lost β-haemolytic activity. This loss of β-haemolytic activity was restored by trans-complementation of sagA SCC. Furthermore, a co-cultivation assay established that the cytotoxicity of β-SCC was clearly dependent on the presence of sagA SCC. These results demonstrate that sagA SCC is the factor responsible for β-SCC β-haemolysis and cytotoxicity.
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3

Nalmas, Sandhya, Eliahu Bishburg e Trini Chan. "Streptococcus constellatusand Prevotella bivia Penile Abscess". Scientific World JOURNAL 7 (2007): 1631–33. http://dx.doi.org/10.1100/tsw.2007.240.

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Abstract (sommario):
Streptococcus constellatus(S. constellatus) is known to cause abscesses in the oral, genitourinary, and gastrointestinal tracts, frequently in association with anaerobic bacteria. We report a rare case ofS. constellatusandPrevotella bivia(P. bivia) causing a penile abscess, which was successfully treated with surgical drainage and antibiotic treatment.
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4

Segrelles Calvo, G., C. Cisneros, R. Gómez-Punter, J. A. García Romero de Tejada e O. Rajas. "Empiema causado por Streptococcus constellatus". Revista de Patología Respiratoria 15, n. 1 (gennaio 2012): 30–32. http://dx.doi.org/10.1016/s1576-9895(12)70136-4.

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5

Revilla-Martí, P., e C. López-Núñez. "Empiema pleural por Streptococcus constellatus". Revista Clínica Española 211, n. 11 (dicembre 2011): 612–13. http://dx.doi.org/10.1016/j.rce.2011.04.007.

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6

Sangil González, A., M. Sandiumenge Durán, I. López Martínez, I. Melián Domínguez e F. González López. "Absceso hepático por Streptococcus constellatus". Anales de Pediatría 78, n. 2 (febbraio 2013): 133–34. http://dx.doi.org/10.1016/j.anpedi.2012.05.016.

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7

Gatti, Luis, Dolores Lovera, Silvio Apodaca, Claudia Zárate, Juan Irala, Gabriela Sanabria e Antonio Arbo. "Streptococcus constellatus: uncommon cause of pleural empyema". Revista del Instituto de Medicina Tropical 14, n. 1 (30 giugno 2019): 40–43. http://dx.doi.org/10.18004/imt/201914140-43.

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8

Roca, B., A. Romero e E. Simón. "Acute meningitis caused by Streptococcus constellatus". Journal of Infection 37, n. 1 (luglio 1998): 88. http://dx.doi.org/10.1016/s0163-4453(98)91249-x.

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9

Fuentes Olmo, Javier, María Ruiz Mariscal, Rafael Uribarrena Amezaga e Teresa Omiste Sanvicente. "Peritonitis bacteriana espontánea por streptococcus constellatus". Gastroenterología y Hepatología 29, n. 9 (novembre 2006): 595–96. http://dx.doi.org/10.1157/13094363.

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10

Tymon-Rosario, Joan, Jessica M. Atrio, Hyun Ah Yoon, David Erlichman e Veronica Lerner. "Streptococcus constellatus Peritonitis and Subsequent Septic Shock following Intrauterine Device Removal". Case Reports in Obstetrics and Gynecology 2019 (4 agosto 2019): 1–5. http://dx.doi.org/10.1155/2019/6491617.

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Abstract (sommario):
Background. Previous reports have described cases of abscess formation by Streptococcus constellatus involving the oral cavity, gastrointestinal tract, and septic thrombophlebitis of the right ovarian vein with subsequent bacteremia and septic shock. Ascending infection from the genital tract to the fallopian tubes resulting in peritonitis from Streptococcus constellatus is a rare clinical circumstance where there is minimal information in the literature to guide its diagnosis, management, and expected prognosis. Case. A 36-year-old G3P0111 developed a tubo-ovarian abscess two weeks after intrauterine device (IUD) removal and then rapidly decompensated with septic shock from peritonitis due to Streptococcus constellatus infection. The patient was also newly diagnosed with diabetes and in diabetic ketoacidosis (DKA) on presentation. She received broad-spectrum antibiotic coverage and required two exploratory surgical procedures to obtain source control. Two Interventional Radiology- (IR-) guided drainage procedures were subsequently performed to drain remaining fluid collections. Her recovery involved a prolonged ICU stay. On hospital day seventy-three, after receiving approximately 8 weeks of antibiotics and the above noted procedures the patient was discharged to a subacute rehabilitation facility. Conclusion. Streptococcus constellatus is a highly pathogenic organism once a systemic septic infection has become established that can cause an ascending genital tract infection resulting in tubo-ovarian abscess formation, peritonitis, and septic shock.
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Più fonti

Tesi sul tema "Streptococcus constellatus"

1

Fernandes, Borges da Costa Helena Isabel. "Aplicación diagnóstica de PCR para detección de Streptococcus constellatus en pericoronaritis". Doctoral thesis, Universitat Internacional de Catalunya, 2013. http://hdl.handle.net/10803/108086.

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Abstract (sommario):
La pericoronaritis es una patologia infecciosa que suele producirse con frecuencia alrededor del tercer molar, cuando este erupciona. Suele manifestarse con mayor frecuencia en molares inferiores, cursando clinicamente con dolor y exsudado, traendo implicaciones y complicaciones severas al paciente si el diagnóstico y el enfoque terapeutico no sea el correcto. Por su naturaleza polimicrobiana la pericoronaritis tiene un caracter patogeno puesto de manifiesto onde se describen con mayor problemas de cultivo los Streptococcus responsábles por esta patologia, o sea, el grupo milleri. Por todo esto se ha empleado la tecnica molecular de PCR para comprovar si los cebadores diseñados, en el estudio empirico anteriormente presentado, serian especificos para cada una de las cepas bacterianas descritas. Se ha extraido el DNA de las colonias aisladas, mediante un protocolo previamente elaborado. Se ha ajustado la PCR a cada par de cebadores, empleando las cepas de Streptococcus grupo milleri como controles positivos. Para comprovar la especificidad empírica de los cebadores diseñados se realizaron pruebas cruzadas de DNA aislado de otras cepas del género Streptococcus y otras bacterias orales. Por fin, se llevó a cabo la analisis de muestras clínicas de casos de pericoronaritis y controles, analizando por duplicado cada par de cebadores en cada una de ellas. Cada bacteria ha sido examinada con dos juegos de primers, con el fin de reducir la posibilidad de falsos negativos derivados de una variabilidad en la secuencia genética. La viasualizacion de resultados se ha realizado por electoforesis en gel de agarosa a 1% con gel red.
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2

Mabboux, Florence. "Matériaux implantaires dentaires et adhérence de Streptococcus sanguinis et de Streptococcus constellatus : caractérisation et rôle des propriétés physico-chimiques de surface". Lyon 1, 2004. http://www.theses.fr/2004LYO10236.

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Abstract (sommario):
Dans cette étude in vitro, nous avons évalué (i) l’intérêt de 3 approches différentes dans la caractérisation des propriétés de surface de biomatériaux implantaires dentaires (Titane et Ti-6A1-4V) et de Streptococcus sanguinis et de Streptococcus constellatus, avec et sans salive, (ii) l’adhérence de ces deux espèces sur ces biomatériaux, recouverts de salive, par l’analyse d’images, (iii) l’influence de la topographie de surface et de procédés de désinfection/stérilisation sur les propriétés de surface du Titane et du TA6V et sur l’adhérence bactérienne. Nos résultats montrent un comportement similaire du titane et de son alliage, le rôle déterminant du choix de la méthode dans la caractérisation physico-chimique de la surface des bactéries et des solides. Ils confirment l’intérêt de la détermination des interactions acide-base et électrostatiques pour une meilleure compréhension de l’adhésion bactérienne sur les matériaux implantaires
In this in vitro study, we have evaluated (i) the interest of 3 different approaches in the characterization of surface properties of implant dental biomaterials (Titanium and Ti-6A1-4V) and of Streptococcus sanguinis and Streptococcus constellatus, with and without saliva, (ii) the number of adherent bacterial cells on these biomaterials , coated with saliva, by analysis of images, (iii) the influence of surface topography and processes of disinfection /sterilisation on surface properties of Titanium, TA6V and on bacterial adherence. Our results show a similar behaviour of titanium and its alloy, the determining role of the method in the physico-chemical characterization of surface properties of bacteria and solids. They confirm the usefulness of determining acid-base interactions and electrostatic properties for a better understanding of streptococcal adhesion on implant dental materials
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3

Stotz, Anne Luise [Verfasser], M. [Akademischer Betreuer] Borneff-Lipp, B. [Akademischer Betreuer] Schmidt e B. [Akademischer Betreuer] Kahl. "Streptococcus constellatus bei der polymikrobiellen Lungeninfektion von Patienten mit Cystischer Fibrose / Anne Luise Stotz. Betreuer: M. Borneff-Lipp ; B. Schmidt ; B. Kahl". Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2014. http://d-nb.info/1060717409/34.

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Capitoli di libri sul tema "Streptococcus constellatus"

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Potsios, Charalampos, Panagiota Xaplanteri, Vasileios Zoitopoulos, Panagiotis Patrinos, Iro Ioanna Giannakopoulou, Ilektra Tzivaki, Theodora Kafentzi et al. "Pyogenic Spondylodiscitis due to Streptococcus constellatus in an Immunocompromised Male Patient: A Case Report and Review of the Literature". In Case Reports For Medical Practitioners. Vide Leaf, Hyderabad, 2020. http://dx.doi.org/10.37247/crmp.1.2020.3.

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Atti di convegni sul tema "Streptococcus constellatus"

1

Parra-Rodriguez, L., R. Nasim, A. Mohammed, D. Singh e S. B. Smith. "Empyema Necessitans from Streptococcus Constellatus". In American Thoracic Society 2019 International Conference, May 17-22, 2019 - Dallas, TX. American Thoracic Society, 2019. http://dx.doi.org/10.1164/ajrccm-conference.2019.199.1_meetingabstracts.a3712.

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2

Fakhra, S., A. Iardino, W. Chan, J. Minor, A. Desoasido e A. Singh. "The Curious Hiatal Hernia Which Was Actually Streptococcus Constellatus Empyema". In American Thoracic Society 2021 International Conference, May 14-19, 2021 - San Diego, CA. American Thoracic Society, 2021. http://dx.doi.org/10.1164/ajrccm-conference.2021.203.1_meetingabstracts.a2945.

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