naphthalene/atrofi

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nahR, encoding a LysR-type transcriptional regulator, is highly conserved among naphthalene-degrading bacteria isolated from a coal tar waste-contaminated site and in extracted community DNA.

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In Pseudomonas putida strain G7, a LysR-type positive transcriptional activator protein encoded by nahR is necessary for activation of two operons involved in naphthalene catabolism [Schell, M. A. & Poser, E. F. (1989). J Bacteriol 171, 837-846]. The role of an nahR homologue, NCIB-nahR, in another

Characterization of the anti-inflammatory activity and reduced potential for dermal atrophy of (11 beta, 16 beta)-9-fluoro-1',2',3', 4'-tetrahydro-11,21-dihydroxypregna-1,4-dieno[16,17-b]naph thalene-3, 20-dione hydrate (1 : 1) (SQ 26,490), a topically active corticoid.

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SQ 26,490, (11 beta, 16 beta)-9-fluoro-1',2',3',4'-tetrahydro-11, 21-dihydroxypregna-1,4-dieno[16,17-b]naphthalene 3,20-dione hydrate (1 : 1), was a moderately potent inhibitor of edema formation in the rat. After extended topical application, SQ 26,490 totally inhibited edema formation without

Dynamic changes in nahAc gene copy numbers during degradation of naphthalene in PAH-contaminated soils.

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Many bacteria that degrade polycyclic aromatic hydrocarbons (PAHs) contain the nahAc gene that encodes a component of multimeric naphthalene dioxygenases. Because the nahAc gene is highly conserved, this gene serves as a potential biomarker for PAH degradation activity. The aim of this research was

A targeted real-time PCR assay for studying naphthalene degradation in the environment.

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A quantitative real-time polymerase chain reaction (PCR) assay was developed for monitoring naphthalene degradation during bioremediation processes. The phylogenetic affiliations of known naphthalene-hydroxylating dioxygenase genes were determined to target functionally related bacteria, and

Chemotaxis of halophilic bacterium Halomonas anticariensis FP35 towards the environmental pollutants phenol and naphthalene.

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Chemotaxis can play an important role in bioremediation and substrate bioavailability. The bioremediation of hydrocarbons in saline environments can be carried out by technologies using halophilic bacteria. The aim of this study is to analyse chemotactic responses of the halophilic bacterium

The abundance of nahAc genes correlates with the 14C-naphthalene mineralization potential in petroleum hydrocarbon-contaminated oxic soil layers.

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In this study, we evaluated whether the abundance of the functional gene nahAc reflects aerobic naphthalene degradation potential in subsurface and surface samples taken from three petroleum hydrocarbon contaminated sites in southern Finland. The type of the contamination at the sites varied from

Toxicology and carcinogenesis studies of naphthalene (cas no. 91-20-3) in F344/N rats (inhalation studies).

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Naphthalene is used as an intermediate in the synthesis of phthalic and anthranilic acids, naphthols, naphthylamines, sulfonic acid, synthetic resins, celluloid, and hydronaphthalenes; it is also used in the preparation of anthraquinone, indigo, salicylic acid, and 1-naphthyl-N-methylcarbamate

Aerobic and oxygen-limited naphthalene-amended enrichments induced the dominance of Pseudomonas spp. from a groundwater bacterial biofilm.

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In this study, we aimed at determining the impact of naphthalene and different oxygen levels on a biofilm bacterial community originated from a petroleum hydrocarbon-contaminated groundwater. By using cultivation-dependent and cultivation-independent approaches, the enrichment, identification, and

Functionally rigid and degenerate molecular shuttles.

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The preparation and dynamic behavior of two functionally rigid and degenerate [2]rotaxanes (14 PF(6) and 24 PF(6)) in which a pi-electron deficient tetracationic cyclophane, cyclobis(paraquat-p-phenylene) (CBPQT(4+)) ring, shuttles back and forth between two pi-electron-rich naphthalene (NP)

Repeated dose toxicity and relative potency of 1,2,3,4,6,7-hexachloronaphthalene (PCN 66) 1,2,3,5,6,7-hexachloronaphthalene (PCN 67) compared to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) for induction of CYP1A1, CYP1A2 and thymic atrophy in female Harlan Sprague-Dawley rats.

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In this study we assessed the relative toxicity and potency of the chlorinated naphthalenes 1,2,3,4,6,7-hexachloronaphthalene (PCN 66) and 1,2,3,5,6,7-hexachloronaphthalene (PCN 67) relative to that of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Chemicals were administered in corn oil:acetone (99:1)

Airway trefoil factor expression during naphthalene injury and repair.

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While the role of trefoil factors (TFF) in the maintenance of epithelial integrity in the gastrointestinal tract is well known, their involvement in wound healing in the conducting airway is less well understood. We defined the pattern of expression of TFF1, TFF2, and TFF3 in the airways of mice

The azulene-to-naphthalene rearrangement revisited: a DFT study of intramolecular and radical-promoted mechanisms.

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Intramolecular and radical-promoted mechanisms for the rearrangement of azulene to naphthalene are assessed with the aid of density functional calculations. All intramolecular mechanisms have very high activation energies (>/=350 kJ mol(-1) from azulene) and so can only be competitive at

Intramolecular triarylmethane-triarylmethylium complexes with a naphthalene-1,8-diyl skeleton: isolation, structure, and reactivities of the C--H-bridged carbocations.

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Isolation and low-temperature X-ray analyses of intramolecular triarylmethane-triarylmethylium complexes with a naphthalene-1,8-diyl-type skeleton have been achieved. These bridged cations prefer a C--H localized structure both in solution and in the solid state. The bridging hydrogen undergoes a

Subretinal neovascularization after naphthalene damage to the rabbit retina.

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OBJECTIVE To examine the retinotoxic effect of naphthalene, a powerful oxidative agent and a well-known cataractogenic agent. METHODS A 10% solution of naphthalene dissolved in paraffin oil was given every other day by gavage to 31 pigmented rabbits for 5 weeks, at a dose of 1 g/kg body weight. Four

Resveratrol delay the cataract formation against naphthalene-induced experimental cataract in the albino rats.

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Oxidative stress-induced toxicity plays a major role in ocular diseases such as retinal degeneration, age-related cataract (ARC) formation and macular dystrophy. In this study, we explored the possible role of resveratrol (RSV) at the different dose levels (10, 20 and 40 mg/kg/day, ip) in an

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