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Lysosomal membrane damage in soluble Abeta-mediated cell death in Alzheimer's disease.

Our previous studies suggest that a failure to degrade aggregated Abeta1-42 in late endosomes or secondary lysosomes is a mechanism that con … somal hydrolases into the cytoplasmic compartment. Treatment of cells with either the antioxidant n-propyl gallate or lysosomotropic amine (methylamine) partially blocks the release of lysosomal contents suggesting that this AO relocalization is due to lysosomal membrane oxidation. Based on these findings, we propose that the cell death mediated by the soluble A …

Aberrant crypts as a biomarker for colon cancer: evaluation of potential chemopreventive agents in the rat.

We assessed the effects of 41 potential chemopreventive agents in the F344 rat using the inhibition of carcinogen-induced aberrant crypt foc … lic acid, levamisole, 2-mercaptoethanesulfonic acid, nordihydroguiaretic acid, potassium glucarate, propyl gallate, beta-sitosterol, sodium cromolyn, sodium molybdate, and sulfasalazine. The aberrant crypt assay demonstrates reasonable specificity and sensitivity in predicting which agents are likely to prevent colon cancer.

ViCEKb: Vitiligo-linked Chemical Exposome Knowledgebase.

Vitiligo is a complex disease wherein the environmental factors, in conjunction with the underlying genetic predispositions, trigger the aut … bly, we observed that ViCEKb chemicals are present in a variety of consumer products. For instance, Propyl gallate is present as a fragrance substance in various household products, and Flutamide is used in medication to treat prostate cancer. These two chemicals have the highest level of evidence in ViCEKb, but are not regulated for their skin sensitizing effec …

Relationship of CD86 surface marker expression and cytotoxicity on dendritic cells exposed to chemical allergen.

Human peripheral blood-derived dendritic cells (DC) respond to a variety of chemical allergens by up-regulating expression of the co-stimula … S), nickel sulfate (NiSO4), p-phenylenediamine (PPD), Bandrowski's base (BB), hydroquinone (HQ) and propyl gallate (PG) for 48 h at concentrations which induced both no to slight to moderate cytotoxicity. For comparison, DC were treated with the irritants sodium dodecyl sulfate (SDS), benzoic acid (BA), and benzalkonium chloride (BZC) at concentrations resulting …

Integrated bioactivity assessment of Syzygium aromaticum bud extract from Sudan shows antimicrobial and antioxidant potential.

The escalating threat of antimicrobial resistance, coupled with the significant role of oxidative stress in chronic diseases, underscores th … ivity against other pathogens. In the antioxidant assessment, the extract outperformed the standard propyl gallate, showing 91 ± 0.03% DPPH radical scavenging activity and a significantly lower IC₅₀ (6.09 µg/mL vs. 17.39 µg/mL). Preliminary toxicity screening using the brine shrimp lethality assay indicated a favorable safety margin, with an LD₅₀ of 882.97 µg/mL …

Responses of the L5178Y tk+/tk- mouse lymphoma cell forward mutation assay: III. 72 coded chemicals.

Seventy-two chemicals were tested for their mutagenic potential in the L5178Y tk+/- mouse lymphoma cell forward mutation assay, using proced … Cl, methyl viologen, nickel sulfate.6H2O, 4,4'-oxydianiline, pentachloroethane, piperonyl butoxide, propyl gallate, quinoline, rotenone, 2,4,5,6-tetrachloro-4-nitro-anisole, 1,1,1,2-tetrachloroethane, trichlorfon, 2,4,6-trichlorophenol, 2,4,5-trimethoxybenzaldehyde, 1,1,3-trimethyl-2-thiourea, 1-vinyl-3-cyclopetene dioxide, vinyl toluene, and ziram. Apart from 2 …

Intracellular GSH levels rather than ROS levels are tightly related to AMA-induced HeLa cell death.

Antimycin A (AMA) inhibits succinate oxidase and NADH oxidase, and also inhibits mitochondrial electron transport between cytochromes b and c. We investigated the involvement of ROS and GSH in AMA-induced HeLa cell death. AMA increased the intracellular H(2)O(2) and O(2)(*-) levels and reduced the intracellular GSH content. ROS scavengers (Tempol, Tiron, Trimetazidine and NAC) did not down-regulate the production of ROS and inhibit apoptosis in AMA-treated cells. Treatment with NAC and N-propylgallate showing the enhancement of GSH depletion in AMA-treated cells significantly intensified the l

Govaniadine Ameliorates Oxidative Stress, Inflammation, and Kupffer Cell Activation in Carbon Tetrachloride-Induced Hepatotoxicity in Rats.

Liver diseases such as hepatic carcinoma are one of the main health problems worldwide. Herbal drugs are largely used to treat liver injury … dant activity with a percentage inhibition of 92.2, 86.7, 85.3, and 79.7, respectively, compared to propyl gallate 90.3%. Treatment with govaniadine reduced the serum enzyme level down to normal levels in the CCl4-treated group while inhibiting the increase of malondialdehyde, and the induction of superoxide dismutase and the glutathione level was upregulated. H …

Trends in contact sensitization, results, and implications from a contact dermatitis clinic in Israel.

BACKGROUND: The baseline series includes common allergens, evolves over time, and differs by location. Our study aims to characterize allerg … herefore should be reconsidered in baseline series, among the OEBS, Chloramphenicol, Quaternium 15, Propyl gallate, and Amerchol L101 have elicited high SPIN values and should be vigilantly examined in the suitable clinical scenario. Significantly lower sensitization frequency to propolis raises the possibility of a protective effect due to early oral exposure a …

Inhibition of Na-K-ATPase in thick ascending limbs by NO depends on O2- and is diminished by a high-salt diet.

A high-salt diet enhances nitric oxide (NO)-induced inhibition of transport in the thick ascending limb (THAL). Long exposures to NO inhibit … t Na-K-ATPase after 120 min (0.50 +/- 0.05 vs. 0.52 +/- 0.07 nmol P(i).microg protein(-1).min(-1)). Propyl gallate, another O(2)(-) scavenger, also prevented SPM-induced inhibition of Na-K-ATPase activity. SPM inhibited pump activity in tubules from rats on high salt when O(2)(-) levels were increased with xanthine oxidase and hypoxanthine. We concluded that NO …

Developmental toxicity of hydroxylamine: an example of a maternally mediated effect.

Hydroxylamine (HA) is an important reducing agent that is used in several industries. HA is a moderate irritant and a powerful inducer of me … analysis at 4 hours after injection revealed cellular debris in the limb buds; when the antioxidant propyl gallate was co-administered with HA, cellular debris was absent at 4 hours. It is concluded that although HA is a directly acting developmental toxicant if it reaches the embryo, the observed embryolethality seen after subcutaneous injection of pregnant ani …

[Slide platelet aggregation test used as a monitor for patient treated with anti-pletelet drugs].

The aim was to verify the effectiveness of slide platelet aggregation test (SPAT) to monitor the inhibition effect of anti-platelet drugs. A group of eight healthy volunteers was examined for SPAT value and T(50) (time necessary for reaching 50% of total aggregation) induced by ADP, arachidonic acid (AA) and cationic propyl gallate (c-PG) respectively before and after administration of ASA in dose of 100 mg/day for 3 days. The group of 41 inpatients at the Department of Cardiovascular Disease treated with anti-platelet drugs and the group of 327 healthy blood donors were also examined for SPAT…

Plants as a Source of Anticancer Agents: From Bench to Bedside.

Cancer is the second leading cause of death after cardiovascular diseases. Conventional anticancer therapies are associated with lack of selectivity and serious side effects. Cancer hallmarks are biological capabilities acquired by cancer cells during neoplastic transformation. Targeting multiple cancer hallmarks is a promising strategy to treat cancer. The diversity in chemical structure and the relatively low toxicity make plant-derived natural products a promising source for the development of new and more effective anticancer therapies that have the capacity to target multiple hallmarks in

Antioxidant Intake and Antitumor Therapy: Toward Nutritional Recommendations for Optimal Results.

The role of the induction of oxidative stress as the mechanism of action of many antitumor drugs is acquiring an increasing interest. In such cases, the antitumor therapy success may be conditioned by the antioxidants present in our own body, which can be synthesized de novo (endogenous) or incorporated through the diet and nutritional supplements (exogenous). In this paper, we have reviewed different aspects of antioxidants, including their classification, natural sources, importance in diet, consumption of nutritional supplements, and the impact of antioxidants on health. Moreover, we have f

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… Furthermore, there is another group that comprises synthetic antioxidants widely used in the food industry, such as butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), propyl gallate (PG), and tert-butylhydroquinone (TBHQ). …

Phytochemicals as Chemo-Preventive Agents and Signaling Molecule Modulators: Current Role in Cancer Therapeutics and Inflammation.

Cancer is one of the deadliest non communicable diseases. Numerous anticancer medications have been developed to target the molecular pathways driving cancer. However, there has been no discernible increase in the overall survival rate in cancer patients. Therefore, innovative chemo-preventive techniques and agents are required to supplement standard cancer treatments and boost their efficacy. Fruits and vegetables should be tapped into as a source of compounds that can serve as cancer therapy. Phytochemicals play an important role as sources of new medication in cancer treatment. Some synthet

Plant-Derived Natural Products in Cancer Research: Extraction, Mechanism of Action, and Drug Formulation.

Cancer is one of the main causes of death globally and considered as a major challenge for the public health system. The high toxicity and the lack of selectivity of conventional anticancer therapies make the search for alternative treatments a priority. In this review, we describe the main plant-derived natural products used as anticancer agents. Natural sources, extraction methods, anticancer mechanisms, clinical studies, and pharmaceutical formulation are discussed in this review. Studies covered by this review should provide a solid foundation for researchers and physicians to enhance basi

Resveratrol from Dietary Supplement to a Drug Candidate: An Assessment of Potential.

Resveratrol (RVT) is a well known phyto-chemical and is widely used in dietary supplements and botanical products. It shows a wide range of pharmacological/beneficial effects. Therefore, it can be a potential candidate to be developed as phyto-pharmaceutical. Multiple diseases are reported to be treated by the therapeutic effect of RVT since it has antioxidant, anti-cancer activity and anti-inflammatory activities. It also has a major role in diabetes, arthritis, cardiac disorder and platelet aggregation etc. The major requirements are establishments regarding safety, efficacy profile and phys

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… Trans-RVT also inhibits lipoxygenase activity more efficiently than other lipoxygenase inhibitors such as propyl gallate, ibuprofen, ursolic acid, acetylsalicylic acid, and salicyl-hydroxamic acid [ 48 ]. The rate of inhibition rises as trans-RVT concentration increases. …

Ранние синапсовые изменения фоторецептора Mitochondria в модели мыши Множественного склероза EAE

Множественный склероз (MS) — воспалительное аутоиммунное заболевание центральной нервной системы (CNS), связанное со многими неврологическими нарушениями. Взгляд на систему часто нарушается в MS. В предыдущих исследованиях мы наблюдали ранние синусосы фоторецепторовых лент в модели мыши EAE MS, которые включали изменения в цикле синаптического везикла и нарушения предсинаптического ка2+ гомеостаза. Поскольку эти преднаптические события требуют очень много энергии, мы проанализировали, может ли синаптическая митохондрия, играющая важную роль в синаптическом энергетическом метаболизме, быть заде

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… After incubation with the secondary antibodies, sections were washed several times with PBS and embedded in N-propyl gallate (NPG) anti-fade, as previously described [ 25 , 26 , 27 , 80 , 81 , 82 , 83 , 84 ]. …

Reactive Oxygen Species Bridge the Gap between Chronic Inflammation and Tumor Development.

According to numerous animal studies, adverse environmental stimuli, including physical, chemical, and biological factors, can cause low-grade chronic inflammation and subsequent tumor development. Human epidemiological evidence has confirmed the close relationship between chronic inflammation and tumorigenesis. However, the mechanisms driving the development of persistent inflammation toward tumorigenesis remain unclear. In this study, we assess the potential role of reactive oxygen species (ROS) and associated mechanisms in modulating inflammation-induced tumorigenesis. Recent reports have e

Glioblastoma Treatment: State-of-the-Art and Future Perspectives.

(1) Background: Glioblastoma is the most frequent and lethal primary tumor of the central nervous system. Through many years, research has brought various advances in glioblastoma treatment. At this time, glioblastoma management is based on maximal safe surgical resection, radiotherapy, and chemotherapy with temozolomide. Recently, bevacizumab has been added to the treatment arsenal for the recurrent scenario. Nevertheless, patients with glioblastoma still have a poor prognosis. Therefore, many efforts are being made in different clinical research areas to find a new alternative to improve ove