This investigation examined the ability of cells of Bacteroides melaninogenicus subsp. asaccharolyticus 381 to adhere to surfaces that might be important for its initial colonization of the mouth and its subsequent colonization in periodontal pockets. Of 48 asaccharolytic strains of B. melaninogenicus, 47 agglutinated human erythrocytes, whereas none of 20 fermentative strains, which included reference cultures of the subspecies intermedius and melaninogenicus, were active. Electron microscopy indicated that both asaccharolytic and fermentative strains possessed pili; hence, the presence of pili did not correlate with the hemagglutinating activities of B. melaninogenicus strains. Both asaccharolytic and fermentative B. melaninogenicus strains suspended in phosphate-buffered saline adhered in high numbers to buccal epithelial cells and to the surfaces of several gram-positive bacteria tested, including Actinomyces viscosus, A. naeslundii, A. israelii, Streptococcus sanguis, and S. mitis. B. ...
Various subspecies of Bacteroides melaninogenicus differ in their pigmentation. Subsp. asaccharolyticus produces protohaem almost exclusively, subsp. intermedicus both protohaem and a smaller proportion of protoporphyrin, and subsp. melaninogenicus mainly protoporphyrin with a trace of protohaem. As a consequence young colonies can be differentiated by their red fluorescence in u.v. light (365nm): subsp. asaccharolyticus does not fluoresce, subsp. intermedicus shows a limited fluorescence, and subsp. melaninogenicus shows a bright fluorescence. The pigments were isolated as the dimethyl esters of protohaemin and of protoporphyrin and identified by electronic spectroscopy, mass spectrometry and comparisons by t.l.c. Incorporation of delta-aminolaevulinate into these pigments was not detected, nor was porphobilinogen formation observed. Subsp. melaninogenicus grown in the presence of [14C]protohaemin formed [14C]protoporphyrin. This appears to represent a novel biological demetallation. ...
Summary An agglutination assay for detecting intermicrobial adherence between the cells of Candida albicans and various oral bacteria is described. Strains of Streptococcus sanguis, S. salivarius, S. mutans, S. mitis, Fusobacterium nucleatum and Actinomyces viscosus all coagglutinated with C. albicans. No interaction could be demonstrated between the cells of Bacteroides melaninogenicus and those of C. albicans. Preliminary investigations of these interactions suggest that binding of F. nucleatum and A. viscosus to C. albicans is mediated by bacterial proteins, possibly lectins. Other mechanisms must account for the binding of oral streptococci to C. albicans. The possible implications of these findings in relation to oral mucosal colonisation and oral candidal clearance are discussed.
Summary The presence of capsulate Bacteroides spp. and anaerobic gram-positive cocci was investigated in pus specimens from 182 children with chronic orofacial infections or abscesses and in pharyngeal swabs from 26 children without inflammation. Of 216 Bacteroides spp. and anaerobic cocci isolated from clinical infections, 170 (79%) were capsulate, compared with 34 (35%) of 96 isolates from normal pharyngeal flora (p|0.001). The commonest organisms found to be capsulate more often from infected patients than from controls belonged to the B. melaninogenicus group. The possible evolution of encapsulation in these organisms and their importance in mixed orofacial infections are discussed.
During studies of human periodontal disease, a number of bacterial strains were encountered that, on the basis of results of standard biochemical tests, appeared to be Prevotella buccalis, Prevotella denticola, Prevotella melaninogenica, or Prevotella loescheii. However, use of the standard biochemical tests, cellular fatty acid analyses, and the polyacrylamide gel electrophoresis patterns of soluble proteins resulted in conflicting identifications of these strains. The results of tests for cellobiose fermentation, inulin fermentation, and pigment production were responsible for most of the discordant results. Cellular fatty acid analyses in which the Microbial Identification System was used did not differentiate these strains from validly described species, even though separate library entries were created for them. DNA reassociation determinations in which the S1 nuclease procedure was used showed that cellobiose fermentation and pigment production are variable among strains of P. melaninogenica and P
Affiliation:明海大学,歯学部,教授, Research Field:Orthodontic/Pediatric dentistry,Orthodontics/Pediatric dentistry, Keywords:Streptococcus mutans,グルコシルトランスフェラーゼ,glucosyltransferase,小児歯科,rodA遺伝子,ミティスグループレンサ球菌,ペプチド核酸(PNA),ミュータンスレンサ球菌,膜透過型ペプチド,アンチセンス法, # of Research Projects:21, # of Research Products:52, Ongoing Project:P. melaninogenicaの誤嚥性肺炎病原因子の同定と病態発症機序の解明
Coloured scanning electron micrograph (SEM) of Prevotella intermedia, Gram-negative, anaerobic, rod shaped, prokaryote (bacterium). Prevotella intermedia is a black pigmented bacterium that was formerly known as Bacteroides intermedius or Bacteroides melaninogenicus. It can coaggregate with other Gram-positive oral bacteria such as Porphyromonas gingivalis and Actinomyces viscosus. P. intermedia is a normal part of the oral and vaginal flora but can cause respiratory infections including aspiration pneumonia, lung abscesses and osteomyelitis. It can also cause gingivitis and other types of oral lesions including vertical bone loss. P. intermedia, along with Porphyromonas gingivalis, are known to cause polymicrobial infections. Prevotella sp. often become resistant to antibiotics, especially tetracycline and penicillin. Magnification: x3,400 when shortest axis printed at 25 millimetres. - Stock Image C032/2243
Obligate anaerobic, mesophilic, asaccharolytic and opportunistic pathogen with a typical occurrence in the oral cavity, involved in dental and oral infections like periodontitis, inflammations and abscesses ...
[좌측부터 체질 1형 2형 3형] 1) 박테로이데스(Bacteroides) : 탄수화물을 분해하고 비타민 B2, B5, C, H를 만드는 것이 주된 기능이다. 박테리오데스 세균이 많은 속에 속하는 피실험자들 중에는 비만을 겪는 사...
TY - JOUR. T1 - The syndrome of inappropriate secretion of antidiuretic hormone associated with anaerobic thoracic empyema. AU - Petty, B. G.. AU - Smith, C. R.. PY - 1977/1/1. Y1 - 1977/1/1. N2 - The syndrome of inappropriate secretion of antidiuretic hormone has been associated with many pulmonary diseases, including tuberculosis and bacterial and viral pneumonia; however, it has not been reported with anaerobic infections or empyema in the absence of pneumonia. We report a patient with empyema due to Bacteroides melaninogenicus, Bacteroides oralis, and Peptostreptococcus who developed the syndrome. Eight hours before the start of therapy, his serum sodium concentration was 127 mEq per liter; serum osmolality, 255 mOsm per kg; urine osmolality, 522 mOsm per kg; urinary sodium concentration, 39 mEq per liter. The creatinine clearance and the adrenocorticotropic hormone stimulation test were normal, and there was no evidence of dehydration. No other causes of the syndrome of inappropriate ...
Foot rot, or infectious pododermatitis, is a hoof infection commonly found in sheep, goats, and cattle. As the name suggests, it rots away the foot of the animal, more specifically the area between the two toes of the affected animal. It is extremely painful and contagious. It can be treated with a series of medications, but if not treated, the whole herd can become infected. The cause of the infection in cattle is two species of anaerobic bacteria, Fusobacterium necrophorum and Bacteroides melaninogenicus. Both bacteria are common to the environment in which cattle live, and Fusobacterium is present in the rumen and fecal matter of the cattle. In sheep, F. necrophorum first invades the interdigital skin following damage to the skin, and causes interdigital lesions and slight inflammation. The second stage of the disease is marked by the invasion of the foot by the foot rot bacterium Dichelobacter nodosus, a Gram-negative anaerobe. Usually, an injury to the skin between the hooves allows the ...
Florfenicol is a fluorinated synthetic analog of thiamphenicol. Florfenicol is used in the treament of bovine respiratory disease (BRD) associated with Mannheimia (Pasteurella) haemolytica, Pasteurella multocida, and Haemophilus somnus, for treatment of bovine interdigital phlegmon (foot rot, acute interdigital necrobacillosis, infectious pododermatitis) associated with Fusobacterium necrophorum and Bacteroides melaninogenicus.. ...
[Biological activity of Bacteroides fragilis].: The investigation was performed with 9 strains of B. fragilis isolated from pregnant women in their 38th week of
免疫過敏:無菌老鼠一出生就被放入無菌箱中,腸道中沒有半隻腸道菌,這種無菌鼠生活在無菌箱中確實愉快,吃得比一般有菌鼠多,體脂肪反而低,活得又比有菌鼠久,可惜免疫系統不健全,出了無菌箱便無法生存。許多研究都顯示無菌鼠,或以抗生素打亂腸道菌的老鼠,血清中免疫球蛋白IgE濃度顯著高於正常鼠,全身呈現發炎過敏現象;如果給無菌鼠餵食特定的腸道菌,例如脆弱擬桿菌(Bacteroides fragilis),則有助於減輕發炎與過敏現象。許多科學家懷疑,近年來自體免疫疾病發生率快速上升,與抗生素濫用而導致許多人腸道菌嚴重失衡有關 ...
Bacteroides species, saccharolytic Gram-negative obligate anaerobes, are frequently isolated from human infections such as peritonitis, abscesses and bacteremia. Among the species in the genus Bacteroides, thespecies called B. fragilis group areparticularly involved inhuman infections andaremedically important because they account for a major part of anaerobic isolates from clinical specimens. The purpose of this study was to develop PCR primers that specifically and simultaneously amplify theβ-isopropylmalate dehydrogenase gene leuB in B. fragilis group species. We determined partial nucleotide sequences of leuB genes and compared them in seventeen strains of nine B. fragilis group species, and the regions that are conserved among Bacteroides strains but different from other species were used as a B. fragilis group-specific PCR primer set, BacLBF-BacLBR. Specificity tests of the primer set using 52 phenotypically characterized strains and 75 isolates from rat feces showed only one case each ...
Propionibacterium species are nonsporulating, gram-positive anaerobic bacilli that are considered commensal bacteria on the skin. They are usually nonpathogenic and are common contaminants of blood and body fluid cultures.
Looking for online definition of Bacteroides capillosus in the Medical Dictionary? Bacteroides capillosus explanation free. What is Bacteroides capillosus? Meaning of Bacteroides capillosus medical term. What does Bacteroides capillosus mean?
Bacteroides é un xénero de bacterias gramnegativas, con forma de bacilo. As especies de Bacteroides non forman esporas, son anaeróbicas, e hai especies móbiles e inmóbiles.[1] A composición de bases do seu ADN ten un contido GC do 40-48%. Bacteroides ten esfingolípidos nas súas membranas, o que é infrecuente nas bacterias. Tamén conteñen ácido meso-diaminopimélico na capa de peptidoglicano da súa parede celular. As especies de Bacteroides son normalmente mutualistas, e constitúen a parte principal da flora intestinal dos mamíferos,[2] onde xogan un papel fundamental no procesamento de moléculas complexas noutras máis simples no intestino do hóspede.[3][4][5] Nas feces humanas informouse dunha cantidade de 1010-1011 células por gramo.[6] Aínda que poden utilizar azucres simples cando dispoñen deles, as principais fontes de enerxía para Bacteroides no intestino son os glicanos (polisacáridos) complexos derivados do hóspede ou de plantas.[7] Certos estudos indican que a ...
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December 28, 2020 20/12/28 Joan Baez/Stacey Abrams Joan Baez: A New Stage When 79 year-old Joan Baez announced her farewell tour ending her public singing career I assumed she was sailing over the horizon and anchoring at some distant island of quiet retirement. Wrong. https://ptatlarge.typepad.com/ptatlarge/2018/09/joan-baez-fare-thee-well.html Today my friend Myke Farricker...
Clindamycin Hydrochloride Capsules (for use in dogs only) are indicated for the treatment of infections caused by susceptible strains of the designated microorganisms in the specific conditions listed below: Dogs: Skin infections (wounds and abscesses) due to coagulase positive staphylococci (Staphylococcus aureus or Staphylococcus intermedius). Deep wounds and abscesses due to Bacteroides fragilis, Prevotella melaninogenicus, Fusobacterium necrophorum and Clostridium perfringens. Dental infections due to Staphylococcus aureus, Bacteroides fragilis, Prevotella melaninogenicus, Fusobacterium necrophorum and Clostridium perfringens. Osteomyelitis due to Staphylococcus aureus, Bacteroides fragilis, Prevotella melaninogenicus, Fusobacterium necrophorum and Clostridium perfringens.
Many Bacteroidetes, especially Bacteroides are opportunistic pathogens. The figure shows predominant sites colonized by Bacteroides and other anaerobic bacilli. Their levels are higher in celiac disease and more severe forms of IBS (Rome III criteria). Prevotella, and Fusobacterium are prevalent in the body and usually dont cause problems, but may become involved in infections throughout the body (see Fig.). Within the Bacteroides group, B fragilis is the most common pathogen, followed B thetaiotaomicron and other members of the B fragilis group. Among the bile-sensitive Prevotella species, the ones most commonly encountered clinically are P melaninogenica, P oris, and P buccae. Porphyromonas species seem to be much less pathogenic except in dental infections. Fusobacterium nucleatum is the Fusobacterium species most often found as a pathogen, but F necrophorum occasionally produces serious disease. Several species of Flavobacteria are known to cause disease in freshwater fish. Bacteria that ...
购买Fragilis兔多克隆抗体(ab15592),Fragilis抗体经WB,IP验证,可与小鼠,大鼠样本反应。17篇文献引用,2个独立用户反馈。中国现货速达。
Background: Fusobacterium necrophorum as a non-spore-forming Gram-negative anaerobic bacillus is an important human and animal pathogen. It may cause severe systemic infections (Lemierres syndrome) and some other infections. The aim of this study was to subtype Fusobacterium necrophorum by using PCR methods. Materials and Methods: Twenty five strains of Fusobacterium necrophorum ...
It has been known for decades that many human gut bacteria have the ability to utilize a wide variety of plant polysaccharides (PS) and animal glycans for their metabolism and growth (1, 2). The members of Bacteroides, a genus with numerous species abundant in the human colon, are especially adept at utilizing the vast array of PS and glycans that arrive to the colon from the diet or are present on the mucins overlying the epithelial layer. Early studies analyzing genes necessary for starch utilization in Bacteroides thetaiotaomicron led to the identification of the sus locus (3-6), the first characterized locus of a Bacteroides species encoding a cluster of genes necessary to utilize a complex carbohydrate. It was not until the publication of the first Bacteroides genome sequence in 2003 (7) that the vast number of these polysaccharide utilization loci (PUL), as they were named (8), was appreciated. The genome of the B. thetaiotaomicron type strain contains 88 PUL with an average of 10 genes ...
Define Bacteroides salivosus. Bacteroides salivosus synonyms, Bacteroides salivosus pronunciation, Bacteroides salivosus translation, English dictionary definition of Bacteroides salivosus. Noun 1. Bacteroides - type genus of Bacteroidaceae; genus of Gram-negative rodlike anaerobic bacteria producing no endospores and no pigment and living in...
Looking for online definition of Facultative anaerobic organism in the Medical Dictionary? Facultative anaerobic organism explanation free. What is Facultative anaerobic organism? Meaning of Facultative anaerobic organism medical term. What does Facultative anaerobic organism mean?
Bacteroides is a genus of Gram-negative, rod-shaped bacteria. Bacteroides species are non-endospore-forming, anaerobes, and may either be motile or non-motile, depending on the species.[1] The DNA base composition is 40-48% GC. Unusual in bacterial organisms, Bacteroides membranes contain sphingolipids. They also contain meso-diaminopimelic acid in their peptidoglycan layer. Bacteroides are normally commensal, making up the most substantial portion of the mammalian gastrointestinal flora,[2] where they play a fundamental role in processing of complex molecules to simpler ones in the host intestine. As many as 1010-1011 cells per gram of human feces have been reported.[3] They can use simple sugars when available, but the main source of energy is polysaccharides from plant sources. ...
Erythrasma: Erythrasma is a skin infection caused by a gram positive anaerobic bacillus known as Corynebacterium Minutissimum and Erythrasma occurs in intertriginous area - where two skin areas touch or rub together.
Bacteroides barnesiae has a size of 0.5-1.4 micrometer wide and 0.8-10.6 micrometer long that is completely anaerobic and grows at temperature of about 37C which does not require oxygen to survive. It has a cellular fatty acids including C15:0 and iso-C15:0 and in cultured media appears to be circular, raised and grayish-white colonies. Bacteroides barnesiae is predominantly found in gastrointestinal tract of humans as well as in vertebrate animals where bile is present. It gives benefits to the host if this bacterium strictly retained in the gut by hindering pathogenic microorganisms from forming colonies in the intestines. Bacteroides barnesiae play a basic role in the breakdown of polysaccharides a complex molecule into small molecules that is used by the bacterium as well as the host in order to utilize the nitrogenous substances and biotransformation of steroids and bile acids. Scientific classification: ...
In Ian Lipkin et al 2017 study, low bacteroides caccae was reported (on average). [Index to all posts on Study]. the elevated biotin level was due to an alteration in metabolism related to biotin synthesis by Bacteroides caccae in this mouse model. So low Vitamin B7 Fermentation of pectin and glucose, and activity of pectin-degrading enzymes in…