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At least 235 records · Page 13Linked to original sources
PubMed1994

Comparative anthelminthic efficacy and safety of Caesalpinia crista seed and piperazine adipate in chickens with artificially induced Ascaridia galli infection.

The antiascarid activity of Caesalpinia crista Linn. seeds, popularly known as Karanjwa, was evaluated in chickens of the Fumi breed, suffering from artificially induced Ascaridia galli infection. Eggs per gram (EPG) counts were determined in the droppings of chickens prior and after treatment with powdered C. crista at doses of 30, 40 and 50 mg/kg of body weight along with its extracts in water and methanol in amounts representing 50 mg/kg of crude powder. The crude drug at the dose rates of 40 and 50 mg/kg and its methanol extract induced a significant (P < 0.001) effect on post-treatment days 10 and 15 while the 30 mg/kg dose was efficacious (P < 0.05) on day 15 only. However, the aqueous extract did not show significant results. These results suggest that a 50 mg/kg dose of C. crista seed powder, its equivalent methanolic extract and piperazine (200 mg/kg) are equieffective in treating the ascarid infection of poultry. The crude C. crista powder appears to be potent and safer than its methanol extract on the basis of the side effects observed.

Animals↗
PubMed1967

Use of alpha-aminoadipic acid for the biosynthesis of penicillin N and cephalosporin C by a Cephalosporium sp.

1. l-alpha-Amino[6-(14)C]adipic acid has been prepared from the dl-amino acid by oxidation of the l-isomer with l-amino acid oxidase to alpha-oxo[6-(14)C]adipic acid and by transamination of the latter with l-glutamic acid in an extract of a Cephalosporium sp. prepared by ultrasonic treatment of the mycelium. 2. The optical configuration of small amounts of (14)C-labelled alpha-aminoadipic acid from the mycelium of the Cephalosporium sp. has been determined by treatment with l-amino acid oxidase and measurement of the proportion of radioactivity subsequently retained on a column of a strong cation-exchange resin. 3. alpha-Aminoadipic acid which had been labelled in the mycelium from [1-(14)C]acetate appeared to contain more than 99% of the l-isomer. 4. l-alpha-Amino[(14)C]adipic acid (sodium salt) was taken up much more rapidly than the d-isomer, or alpha-oxo[6-(14)C]adipic acid, by suspensions of washed mycelium of the Cephalosporium sp. in water. The pool of intracellular alpha-aminoadipic acid was expandable. 5. Intracellular products found to be labelled with (14)C from l-alpha-amino[(14)C]adipic acid were delta-aminovaleric acid, saccharopine, lysine, protein, compounds which behaved like penicillin N, cephalosporin C and deacetylcephalosporin C respectively on paper chromatography and electrophoresis, and a peptide whose amino acid residues include alpha-aminoadipic acid, cysteine and valine. 6. l-alpha-Amino[(14)C]adipic acid acted as a precursor of the delta-(d-alpha-aminoadipoyl) side chains of extracellular penicillin N and cephalosporin C. 7. (14)C from d-alpha-amino[(14)C]adipic acid was incorporated into penicillin N and cephalosporin C, but the incorporation was accompanied by a relatively high dilution of specific radioactivity and some l-alpha-amino[(14)C]adipic acid was found in the intracellular pool. 8. These findings are discussed in relation to the origin of the d- configuration of the alpha-aminoadipoyl side chain of the antibiotics.

Acremonium↗
PubMed2006

Ala-504 is a determinant of substrate binding affinity in the mouse Na(+)/dicarboxylate cotransporter.

The Na(+)/dicarboxylate cotransporters from mouse (mNaDC1) and rabbit (rbNaDC1) differ in their ability to handle adipate, a six-carbon terminal dicarboxylic acid. The mNaDC1 and rbNaDC1 amino acid sequences are 75% identical. The rbNaDC1 does not transport adipate and only succinate produced inward currents under two-electrode voltage clamp. In contrast, oocytes expressing mNaDC1 had adipate-dependent inward currents that were about 60% of those induced by succinate. In order to identify domains involved in adipate transport, we examined the functional properties of a series of chimeric transporters made between mouse and rabbit NaDC1. We find that multiple transmembrane helices (TM), particularly TM 8, 9, and 10, are involved in adipate transport. In TM 10 there is only one amino acid difference between the two proteins, corresponding to Ala-504 in mouse and Ser-512 in rabbit NaDC1. The mNaDC1-A504S mutant had decreased adipate-dependent currents relative to succinate-dependent currents and an increase in the K(0.5) for both succinate and glutarate. We conclude that multiple amino acids from TM 8, 9 and 10 contribute to the transport of adipate in NaDC1. Furthermore, Ala-504 in TM 10 is an important determinant of K(0.5) for both adipate and succinate.

Alanine↗
PubMed1993

Preparation, characterization, and dissolution kinetics of two novel albuterol salts.

The possibility of producing slowly dissolving albuterol salts was investigated as a potential means of extending the duration of action of the drug following aerosol delivery to the lung. Albuterol adipate and stearate were precipitated from alcoholic solutions of albuterol and adipic or stearic acids, respectively. Differential scanning calorimetry and hot stage microscopy showed that albuterol adipate and stearate produced single melting endotherms at 182 and 116 degrees C, respectively, which were distinct from those of albuterol (158 degrees C), adipic acid (152 degrees C), and stearic acid (70 degrees C). The aqueous solubilities of albuterol free base, sulfate, adipate, and stearate were 15.7, 250, 353, and 0.6 mg . mL-1, respectively, at room temperature. Only the solubilities of the adipate and the stearate increased significantly when the temperature was elevated to 37 degrees C (452.5 and 1.4 mg . mL-1, respectively). With a rotating disk dissolution method, albuterol free base, sulfate, and adipate were found to have intrinsic dissolution rates of 1.1, 20.4, and 24.0 mg . min-1 . cm-2, respectively, in pH 7.4 phosphate buffer at 37 degrees C. Albuterol stearate dissolved much more slowly and in a nonlinear fashion; this was explained by the deposition of a stearate-rich layer on the dissolving surface of the compacted salt.

Adipates↗
PubMed2001

Final report on the safety assessment of Stearamide DIBA-Stearate.

Stearamide DIBA-Stearate is a substituted dihydroxyisobutylamine (DIBA) that functions in cosmetic formulations as an opacifying agent, a surfactant-foam booster, and a viscosity increasing agent. Stearamide DIBA-Stearate was reportedly used in four cosmetic formulations, at concentrations of 1% to 3%. Few data on this ingredient were available. Data on related ingredients, including Dibutyl Adipate, Diisopropyl Adipate, Stearamide DEA, and Stearamide MEA, were considered in the assessment of safety. A formulation containing 1.3% Stearamide DIBA-Stearate (further diluted to 4% of the formulation) was mildly irritating but nonsensitizing in an repeated-insult patch test (RIPT). The same dilution was noncomedogenic. At a concentration of 20%, Dibutyl Adipate had an oral LD50 of 2 g/kg. Subchronic dermal exposure of rabbits (1.0 ml/kg/day) caused a reduction in weight gain that was not observed at a dose of 0.5 ml/kg/day. In studies using rabbits, undiluted Dibutyl Adipate caused mild to moderate skin irritation and minimal ocular irritation. When pregnant rats were treated intraperitoneally with approximately 1.75 ml/kg Dibutyl Adipate during gestation, the incidence of fetal gross abnormalities was increased. No effect was observed at smaller doses. Diisopropyl Adipate had low acute oral and percutaneous toxicity, and was only a very mild ocular irritant. In skin irritation studies using rabbits, 5.0% to 100% Diisopropyl Adipate caused minimal to mild irritation; these results were also seen in clinical testing with only moderate cumulative irritation, and no sensitization or photosensitization. A formulation containing 5.27% Stearamide MEA was not toxic to rats when applied topically daily for 13 weeks. In studies using rabbits, Stearamide DEA (35% to 40%) was not a skin or ocular irritant, and Stearamide MEA (5.27%) was not an ocular irritant. At 17%, Stearamide MEA was not irritating to the skin, but caused minimal to moderate irritation to the eyes of rabbits. Stearamide MEA (5.27%) did not cause sensitization during a clinical study. It was not possible, however, to determine the relevance of these data on related ingredients. Therefore, it was concluded that the available data are insufficient. Additional data needs are (1) method of manufacture; (2) chemical characterization, including impurities; (3) dermal absorption; if significantly absorbed, then a 28-day dermal toxicity study and a reproductive and developmental toxicity study may be needed; (4) two genotoxicity assays, at least one in a mammalian system; if positive, then a 2-year dermal carcinogenesis study using National Toxicology Program (NTP) methods may be needed; (5) ultraviolet (UV) absorption data; if significant absorption occurs in the UVA or UVB range, photosensitization data are needed. Absent these data, it was concluded that the available data are insufficient to support the safety of Stearamide DIBA-Stearate as used in cosmetic products.

Adipates↗
PubMed1999

Transient gene transfer of non-ELR chemokines to rodent lung induces mononuclear cell accumulation and activation.

The in vivo function of the CXC chemokines interferon-inducible protein-10 (IP-10) and monokine induced by gamma (MIG) was examined using replication-deficient adenoviral vectors expressing human IP-10 (AdIP-10) or murine MIG (AdMIG). Intratracheal and intranasal administration of AdIP-10 or AdMIG into rats and mice produced transient chemokine overexpression from the bronchial epithelium. IP-10 concentrations in the bronchoalveolar lavage fluid (BAL) of AdIP-10-treated animals showed peak expression (>2 ng/ml) 24-48 h after AdIP-10 administration. Dramatic transient increases in BAL cellularity (macrophages, monocytes, lymphocytes, and neutrophils) were observed in AdIP-10-treated and AdMIG-treated animals, and histologic examination of AdIP-10-treated lungs revealed transient infiltrations of mononuclear cells primarily localized around the bronchus and extending throughout the lung parenchyma. However, in immunocomprised SCID mice, only increases in natural killer cell populations were detected in BAL following AdIP-10 intranasal administration, indicating that monocyte/macrophage and neutrophil accumulation was likely the result of factors released from activated lymphocytes.

Adenoviridae↗
PubMed1983

Bacterial formation and metabolism of 6-hydroxyhexanoate: evidence of a potential role for omega-oxidation.

Alkane-utilizing strains of Pseudomonas spp. were found to omega-oxidize hexanoate, 6-hydroxyhexanoate, and 6-oxohexanoate to adipic acid in 5, 30, and 90% molar yields, respectively, after induction with n-hexane. 6-Hydroxyhexanoate was identified as the immediate product of hexanoate omega-hydroxylation by whole cells and was further oxidized into adipic acid and an unexpected metabolite identified as 2-tetrahydrofuranacetic acid. This same metabolite, together with adipic acid, was also detected when similarly induced cells were incubated with hexanoate or 1,6-hexanediol, but not with 6-oxohexanoate (adipic semialdehyde). Cells grown on hexanoate and incubated with 6-hydroxyhexanoate were also found to accumulate 2-tetrahydrofuranacetic acid, which was not further degraded. Utilization of 6-hydroxyhexanoate for growth was restricted to those organisms also able to utilize adipate. Similar observations were made with 1,6-hexanediol serving as the carbon source and cells obtained from one organism, Pseudomonas aeruginosa PAO, grown either on 1,6-hexanediol or 6-hydroxyhexanoate, were found to be well induced for both 6-oxohexanoate and adipate oxidation. The results indicate that 6-hydroxyhexanoate and 1,6-hexanediol are susceptible to both beta- and omega-oxidative attack; however, the former pathway appears to be of no physiological significance since it generates 2-tetrahydrofuranacetic acid as a nonmetabolizable intermediate, making omega-oxidation via adipate the exclusive pathway for degradation.

Caproates↗