Sir, Prevotella spp. are Gram-negative, non-spore-forming anaerobes that are important members of the normal oral, colonic and vaginal flora in humans. These organisms have been isolated from patients with chronic sinusitis, brain abscesses and oral cavity infections often mixed with other anaerobes and streptococci. Metronidazole resistance among Prevotella spp. is rare. We report a clinical i...

Many different bacterial species have been found in infected was obtained from each patient. Clinical signs and symptoms included pain, tenderness to percussion (TTP), purulent exudate, dental root canals [1]. The problem lies in deciding whether any individual species has clinical significance. Koch’s postulates were swelling, wet canal, periapical radiolucency, sinus formation, and swelling. ...

the bacterial population found in the gingival sulcus region in periodontitis consists of gram negative microorganisms; most of them are obligate anaerobes and capnophil, including porphyromonas, prevotella, fusobaclenuin, welinella, actinobacillus actinomycetem comitans, eiknella and capnocytohaga. this study has been carried out to investigate anaerobic and capnophilic bacteria from 206 speci...

BACKGROUND Reduced salivation is considered a major clinical feature of most but not all cases of primary Sjögren's syndrome (pSS). Reduced saliva flow may lead to changes in the salivary microbiota. These changes have mainly been studied with culture that typically recovers only 65% of the bacteria present. OBJECTIVE This study was to use high throughput sequencing, covering both cultivated ...

Objective—The objective of this study was to determine the prevalence of select microorganisms in oral biofilms and to investigate relationships between oral and respiratory status in persons with mental retardation/intellectual and developmental disabilities (IDD). Study Design—We conducted a 6-month-long observational cohort study with 63 persons with IDD. Oral examinations, oral sampling, an...

BACKGROUND Reports on the composition of oral bacteriome in Arabs are lacking. In addition, the majority of previous studies on other ethnic groups have been limited by low-resolution taxonomic assignment of next-generation sequencing reads. Furthermore, there has been a conflict about the existence of a 'core' bacteriome. OBJECTIVE The objective of this study was to characterize the healthy ...

background. the most common species isolated from primary endodontic infections are black-pigmented bacteria. these species are implicated in apical abscess formation due to their proteolytic activity and are fastidious in nature. therefore, the present study was carried out to evaluate the presence and identification of various pigmented porphyromonas and prevotella species in the infected roo...

BACKGROUND Most clinical studies assume that the subgingival microbiota is similar from one geographic location to another. The purpose of the present investigation was to examine the composition of the subgingival microbiota in chronic periodontitis subjects from four countries. METHOD Subjects with chronic periodontitis (N, Sweden=101; USA=115; Brazil=58; Chile=26) were recruited. Subjects ...

Previous analysis of the microbiology of advanced caries by culture and real-time PCR emphasized the high incidence and abundance of gram-negative anaerobic species, particularly Prevotella-like bacteria. The diversity of Prevotella-like bacteria was further explored by analyzing pooled bacterial DNA from lesions of carious dentine. This was achieved by amplification of a region of the 16S ribo...

UNLABELLED Pituitary abscess is a relatively uncommon cause of pituitary hormone deficiencies and/or a suprasellar mass. Risk factors for pituitary abscess include prior surgery, irradiation and/or pathology of the suprasellar region as well as underlying infections. We present the case of a 22-year-old female presenting with a spontaneous pituitary abscess in the absence of risk factors descri...