TEN PERCENT OF PENICILLIC ACID METABOLITES IN MALE MICE WERE DETECTED AS GLUCURONIDE CONJUGATES. ALL METABOLITES IN URINE, PLASMA AND BILE WERE MORE POLAR THAN THE PARENT COMPOUND. THE MAJOR METABOLITES WERE CONJUGATES OR DERIVATIVES OF GLUTATHIONE OR CYSTEINE.
IN SUBCELLULAR FRACTIONS OF MOUSE LIVER HOMOGENATES, PENICILLIC ACID REACTS WITH GLUTATHIONE BOTH ENZYMICALLY AND NONENZYMICALLY; EACH REACTION WAS OF EQUAL IMPORTANCE. METABOLISM BY VARIOUS HEPATIC SUBCELLULAR FRACTIONS WAS ESSENTIALLY NONENZYMIC WHEN GLUTATHIONE WAS ABSENT, BUT METABOLISM WAS INCREASED WHEN GLUTATHIONE WAS AVAILABLE. IN THE PRESENCE OF GLUTATHIONE, 75% OF ADDED PENICILLIC ACID WAS BIOTRANSFORMED WITHIN 30 MINUTES TO METABOLITES NOT EXTRACTABLE WITH ORGANIC SOLVENTS AND MORE POLAR THAN PENICILLIC ACID.
Penicillic acid is rapidly absorbed and extensively metabolized in the liver. Detoxification occurs via interactions with glutathione S-transferases and metabolites are excreted mainly in the urine. (A3011, A3013)
Penicillic acid has been shown to inhibit alcohol and lactate dehydrogenases by forming covalent adducts with either cysteine or lysine residues at the enzyme active sites. Penicillic acid also binds directly to the active center cysteine in the large subunit of caspase-8, thus inhibiting FasL-induced apoptosis by targeting self-processing of caspase-8. Penicillic acid is also mutagenic and can cause DNA single-strand breaks, chromosome aberrations, and inhibition of DNA synthesis. Mycotoxins are often able to enter the liver and kidney by human organic anion transporters (hOATs) and human organic cation transporters (hOCTs). They can also inhibit uptake of anions and cations by these transporters, interefering with the secretion of endogenous metabolites, drugs, and xenobiotics including themselves. This results in increased cellular accumulation of toxic compounds causing nephro- and hepatotoxicity. (A2957, A3007, A3008, A3010, A3012, A3014)
来源:Toxin and Toxin Target Database (T3DB)
毒理性
致癌性证据
没有关于人类的数据。动物致癌性证据有限。总体评估:第3组:该物质对人类致癌性无法分类。
No data are available in humans. Limited evidence of carcinogenicity in animals. OVERALL EVALUATION: Group 3: The agent is not classifiable as to its carcinogenicity to humans.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
致癌物分类
国际癌症研究机构致癌剂:青霉酸
IARC Carcinogenic Agent:Penicillic acid
来源:International Agency for Research on Cancer (IARC)
毒理性
致癌物分类
国际癌症研究机构(IARC)致癌物分类:第3组:无法归类其对人类致癌性
IARC Carcinogenic Classes:Group 3: Not classifiable as to its carcinogenicity to humans
来源:International Agency for Research on Cancer (IARC)
毒理性
致癌物分类
国际癌症研究机构专著:第10卷:(1976年)一些天然存在的物质
IARC Monographs:Volume 10: (1976) Some Naturally Occurring Substances
来源:International Agency for Research on Cancer (IARC)
IN VIVO AND IN VITRO STUDIES SHOWED SIGNIFICANT UPTAKE OF (14)C-PENICILLIC ACID BY RED BLOOD CELLS AND A SIGNIFICANT INCREASE IN RADIOACTIVITY ASSOCIATED WITH THE MEMBRANE FRACTION WITH TIME (1-4 HOURS). HOWEVER, THE MAJORITY OF THE BLOOD CELL ACTIVITY WAS INTRACELLULAR. THE (14)C-RADIOACTIVITY CONCENTRATION IN LIVER FRACTIONS (1.5% OF THE RNA-DNA AND PROTEIN FRACTIONS. THE LEVEL OF THE (14)C ACTIVITY ASSOCIATED WITH THESE FRACTIONS INCREASED WITH TIME (24 HR). STUDIES OF THE IN VIVO METABOLISM OF [(14)C] PENICILLIC ACID BY RATS SHOWED THAT A SIGNIFICANT AMOUNT OF RADIOACTIVITY WAS EXCRETED IN THE URINE (82% OF THE ADMINISTERED DOSE AFTER 7 DAYS). BILIARY METABOLITES ACCOUNTED FOR 10% OF ADMINISTERED DOSE 2 HOURS AFTER ADMINISTRATION.
[EN] KETAL ESTERS OF ANHYDROPENTITOLS AND USES THEREOF<br/>[FR] CÉTO-ESTERS D'ANHYDROPENTITOLS ET LEURS UTILISATIONS
申请人:XLTERRA INC
公开号:WO2010138842A1
公开(公告)日:2010-12-02
The present disclosure relates to the preparation of ketal compounds from anhydropentitols and oxocarboxylates; derivatives, homopolymers, and copolymers thereof; and various compositions, formulations, and articles derived therefrom.
[EN] METHOD OF MAKING KETALS AND ACETALS<br/>[FR] PROCÉDÉ DE FABRICATION DE CÉTALS ET D'ACÉTALS
申请人:SEGETIS INC
公开号:WO2009048874A1
公开(公告)日:2009-04-16
The reaction of alcohols with oxocarboxylates to form acetals or ketals is catalyzed by unexpectedly low levels of protic acids. By employing low acid catalyst levels compared to amounts conventionally used, rapid formation of acetal or ketal is facilitated while the formation of oxocarboxylate esters is minimized. Further employing a significant molar excess of oxocarboxylate in conjunction with low acid catalyst level gives rise to the rapid and clean formation of acetals and ketals from oxocarboxylates and alcohols.
There is provided topical pharmaceutical compositions comprising compounds of formula I
wherein R
1
, R
2
, R
3
and X have meanings given in the description. These compositions can be used to treat microbial infections and to kill clinically latent microorganisms.
SOLVENT, SOLUTION, CLEANING COMPOSITION AND METHODS
申请人:Rieth Lee R.
公开号:US20120128614A1
公开(公告)日:2012-05-24
A cleaning composition can comprise aqueous, nonaqueous liquid, or solid formulations The formulations can contain a surfactant and a solvent The solvent has been shown to have utility in promoting removal, solubilizing or cleaning undesirable soil residues from a number of substrates The solvent materials can be used as a component of an aqueous solution, can be combined in a solid or powdered formulation as an encapsulated solvent or can be combined in a solid or powdered formulation as a solvent absorbed on a solid earner The aqueous formulations can be made in the form of a concentrate The cleaner can be combined with water to form an active cleaning solution that can be applied in a variety of cleaning processes The cleaner can contain additional ingredients including surfactants, builders, sequestrates, bleaches, biocides, to be found in cleaners of general and specific applications Personal care cleaning products are also described.
USE OF PYRROLOQUINOLINE COMPOUNDS TO KILL CLINICALLY LATENT MICROORGANISMS
申请人:Beck Petra Helga
公开号:US20120231995A1
公开(公告)日:2012-09-13
There is provided the use of compounds of formula I
wherein R
1
, R
2
, R
3
and X have meanings given in the description, for the preparation of a medicament for killing clinically latent microorganisms. There is also provided the use of compounds of formula I for treating microbial infections, as well as certain compounds of formula I per se.