Search results for "IBA"
showing 10 items of 1355 documents
Use of molecular topology in the selection of new cytostatic drugs
2000
Abstract Connectivity indices are the topological descriptors that are able to predict different chemical and biological properties of the organic compounds. Recently, our research group has demonstrated their usefulness in selecting new cytostatic compounds, all of them showing antibacterial activity. In this paper we realize that this ability is considerably increased by using our home-made pharmacological distribution diagrams (PDDs) together with the topological charge indices, so that the efficient selection of new candidates within heterogeneous sets of compounds is possible. This is a straightforward way for the design and/or selection of new active compounds on virtually any type of…
Vibrios isolated from the cultured manila clam (Ruditapes philippinarum): numerical taxonomy and antibacterial activities.
2002
Aims: A numerical taxonomic study of halophilic Vibrio isolated from healthy and brown ring disease (BRD) affected manila clams (Ruditapes philippinarum), harvested from the Atlantic coast of south-western Spain, was performed. Methods and Results: Characterization of 123 presumptive Vibrio spp. was carried out using 94 phenotypic tests. Simple matching and Jaccard similarity coefficients were used for numerical analysis. Cluster analysis by the unweighted pair group method with arithmetic averages yielded 15 phena defined at 0.81 similarity. Large phena corresponded to Vibrio tubiashii, V. splendidus biotype I and V. harveyi (phena 1, 5 and 9, respectively). The species V. splendidus bioty…
Antibacterial activity of different root canal sealers against Enterococcus faecalis
2017
Background The aim of the present study was to compare in vitro the antimicrobial activity of different root canal sealers against Enterococcus faecalis, prior and subsequent to setting. Material and methods Agar diffusion test (ADT) was used for evaluating the antibacterial activity of non-set sealer while the direct contact test (DCT) was used for after setting. Results ADT: Except for TotalFill BC Sealer all the others sealers tested showed antibacterial activity. BioRoot™RCS, MTA Fillapex and Sealapex Root Canal Sealer showed the lowest antibacterial activity, a significant increase in antibacterial effect for both Pulp Canal Sealer™ and AH plus sealers were found. Significantly higher …
Antibacterial polypeptides of Lactobacillus species
1990
Twelve of 79 strains of the genus Lactobacillus, mainly isolated from plants or fermenting material, were found to inhibit at least one of the nine indicator strains of the species Lact. brevis, Pediococcus damnosus and Leucanostoc oenos. The antimicrobial activities from Lact. brevis B 37 and Lact. casei B 80 were caused by polypeptides detectable in the culture liquids. They are bacteriocins with a narrow antimicrobial spectrum. Brevicin 37 from Lact. brevis B 37 was active against many lactic acid bacteria and Nocardia corallina, whereas caseicin 80 from Lact. casei B 80 inhibits only one other strain of Lact. casei. Brevicin 37 is stable at 121dC, caseicin 80 is inactivated above 60dC, …
Probiotic properties of Brevibacillus brevis and its influence on sea bass (Dicentrarchus labrax) larval rearing
2012
Efficacy of Brevibacillus brevis strain and its influence on larval rearing of sea bass (Dicentrarchus labrax) were investigated in the present work. Biochemical analyses permit to identify this strain as B. brevis. This bacterium has an inhibitory effect against fish pathogenic bacteria, especially the genus of Vibrio. Enzymatic characterization revealed that B. brevis was lipase positive, amylase, lecithinase and caseinase negative. Adherence assays to abiotic surfaces and challenge test with Artemia larvae demonstrate that B. brevis was fairly adherent and play an important role in the enhancement of the protection of Artemia culture against pathogens. Treatment of sea bass larvae with B…
High resistance against clindamycin, metronidazole and amoxicillin in Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans isolates of …
2010
Objectives: To test the antimicrobial sensitivity of two periodontal pathogens to a panel of five orally administrable antibiotics in periodontal disease. Study design: A total of 69 isolates of Aggregatibacter actinomycetemcomitans and Porphyromonas gingivalis were processed using culture and biochemical tests. Selected colonies of A. actinomycetemcomitans and P. gingivalis were used to evaluate the antibacterial activity of clindamycin, metronidazole, amoxicillin, moxifloxacin and amoxicillin/clavulanic acid. Results: Susceptibility testing revealed a sensitivity of 100% of A. actinomycetemcomitans and P. gingivalis to moxifloxacin and amoxicillin/clavulanic acid but moderate susceptibili…
Sūkalu kā alternatīva substrāta novērtējums bakteriālās celulozes iegūšanai.
2021
Bakteriāla celuloze (BC) ir biopolimērs ar plašu pielietošanas potenciālu, sākot no pārtikas rūpniecības un biomedicīnas līdz elektronikai un kosmētikai. Neskatoties uz to, BC rūpnieciskā ražošana joprojām ir saistīta ar zināmām grūtībām. Viena no tām ir bakteriālo barotņu augstās izmaksas, kas var sasniegt pat 30% no ražošanas izmaksām. Ražošanas izmaksu samazināšanai kā alternatīvu augšanas vidi var izmantot rūpniecības un lauksaimniecības blakusproduktus, tostarp sūkalas. Pētījumi šajā jomā ir joprojām fragmentāri un nepietiekami. Šajā pētījumā sūkalas tika novērtētas ka alternatīvs substrāts BC iegūšanai. Iegūtie rezultāti liecina, ka lielāku BC sintēzi (1,95 ± 0,15 g/L, sausais svars) …
Biznesa Eņģeļu darbība
2020
Bakalaura darba mērķis ir uz statistisko datu pamata izpētīt un analizēt biznesa eņģeļu darbību Latvijā, izdarīt secinājumus un izstrādāt priekšlikumus Latvijas Biznesa eņģeļu tikla darbības pilnveidošanai. Bakalaura darba pirmajā nodaļā tiek pētīti biznesa eņģeļu jēdziens ekonomikā, kādi ir to trūkumi un priekšrocības, darbības raksturojums. Darbā otrajā nodaļā tiek aplūkoti Eiropas biznesa eņģeļu tīkla darbība, aplūkota pašreizējā situācija un līdzšinējā Biznesa eņģeļu jomas attīstība, pašreizējā situācija un līdzšinējā Biznesa eņģeļu jomas attīstība, biznesa eņģeļu tīklu vides attīstība Lietuvā un Igaunijā.. Trešā nodaļa tiek salīdzināta un analizēta Biznesa eņģeļu darbība Latvijā un Eir…
Rapporto costo-efficacia della terapia peginterferone α-2a + ribavirina in confronto a interferone α-2b + ribavirina in pazienti affetti da epatite c…
2004
Introduction In adults with previously untreated chronic hepatitis C (CHC), the combination of peginterferon α-2a plus ribavirin produces a higher rate of sustained virological response (SVR) than interferon α-2b plus ribavirin, but it is still unproven whether this increase is cost-effective. The objective of this study was to determine if the gain in SVR with peginterferon α-2a plus ribavirin is worth the incremental cost.
The influence of topic and systemic administration of copaiba oil on the alveolar wound healing after tooth extraction in rats
2013
Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:30:51Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:43:39Z : No. of bitstreams: 1 2-s2.0-84885131306.pdf: 482007 bytes, checksum: 4123ac7ef46e4992cfe3739bf69580ee (MD5) Made available in DSpace on 2014-05-27T11:30:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-10-14 The Copaiba oil has been used as an auxiliary treatment of inflammations, skin disorders and stomach ulcers, however, in dentistry, this alternative medicine has not been investigated yet. The purpose of this study was to evaluate the influence of topic and systemic administration of copaiba oil on the alveolar wound hea…