Acute Osmotic and pH Shock to Bioluminescent Bacteria Is Reversible in Terms of Luminescence Response.

Bioluminescence inhibition (BLI) measurements in bioluminescent bacteria (BB) is perceived as a potential qualitative and quantitative indicator of hazardous materials. Acute but minor fluctuations in osmolarity and pH do not affect the living systems significantly. However, significant BLI is observed from marine BB due to acute osmolarity or pH changes that may affect the bioassay sensitivity.

Mechanistic paradigms of immunotoxicity, triggered by nanoparticles - a review.

Nanoparticles (NPs) possess the ability to penetrate cells and elicit a rapid and targeted immune response, influenced by their distinct physicochemical properties. These particles can engage with both micro and macromolecules, thereby impacting various downstream signaling pathways that may lead to cell death. This review provides a comprehensive overview of the primary mechanisms contributing to the immunotoxicity of both organic and inorganic nanoparticles.

Dose and time dependent morphodynamic changes in the ovary of nano-nickel treated rats A SEM study.

Aims: Present study demonstrates dose and time dependent effects of NiONPs (<30 nm) on the ovaries of Wistar rat.

Methods: Female rats were gavaged NiONPs or NiOMPs (5 mg/kg b.w.

Higher Sensitivity of Rat Testes to Nano Nickel than Micro Nickel Particles: A Toxicological Evaluation.

Present investigations were undertaken to record the vulnerability of testis to nickel oxide nano and microparticles in Wistar rat with special reference to their preferred bioaccumulation, consequent generation of reactive species, reciprocal influence on testosterone synthesis, DNA damage in spermatids and histopathological changes. Suitable numbers of rats were gavaged NiONPs or NiOMPs (5 mg/kg b.w.

Combined Effects of Fluoride and Arsenic on Mitochondrial Function in the Liver of Rat.

Biochemical and/or molecular mechanisms of arsenic or fluoride toxicity in experimental animals have been widely investigated in the recent past. However, their combined effects on target cells/organelle are poorly understood. The present study was executed to delineate their combined effects on mitochondrial function in the liver of rat.

Zinc Oxide Nanoparticles Ameliorate Dimethylnitrosamine-Induced Renal Toxicity in Rat.

Dimethylnitrosamine (DMN) is an established carcinogen. It is toxic to several organs, viz., the liver, kidney, and lungs, and immune system.

Significance of Inflammation and Apoptosis in Hepatocellular Death in Rat, Co-treated with Arsenic and Fluoride.

Health effects elicited by combined environmental exposures to xenobiotics, in many instances, still remain unresolved. One of these examples is the combined toxicity of arsenic and fluoride. The present study was undertaken to delineate the role of inflammation and apoptosis in hepatocellular death caused by co-exposure to arsenic and fluoride in rat.

Attributes of oxidative stress in the reproductive toxicity of nickel oxide nanoparticles in male rats.

The nanoparticles of nickel are now being widely used in industrial, commercial, and biomedical applications. In recent years, health safety issues posed by them have aroused concerns among health scientists. The aim of the present study was to investigate the role of oxidative stress in male reproductive toxicity induced by nickel oxide nanoparticles in rats.

Endoplasmic Reticulum Stress Induced by Toxic Elements-a Review of Recent Developments.

Endoplasmic reticulum of all eukaryotic cells is a membrane-bound organelle. Under electron microscope it appears as parallel arrays of "rough membranes" and a maze of "smooth vesicles" respectively. It performs various functions in cell, i.

Distinctive fingerprints of genotoxicity induced by As, Cr, Cd, and Ni in a freshwater fish.

Genotoxicity of three toxic elements (chromium, cadmium, nickel) and a metalloid (arsenic) has been studied in a freshwater fish, Channa punctatus using micronuclei (MN) test, comet assay, and erythrocyte nuclear alterations (ENAs) as fingerprints of genotoxicity. These tests yielded different results suggesting involvement of different mechanisms for their genotoxicity. While highest frequency of blebbed nuclei was observed in chromium-treated fish (6.

Zinc oxide nanoparticles inhibit dimethylnitrosamine induced liver injury in rat.

Dimethylnitrosamine (DMN) is a potent hepatotoxic, carcinogenic and mutagenic compound. It induces massive liver cell necrosis and death in experimental animals. Several drugs have been tested in the past for their protective behavior against DMN toxicity.

Assessment of genotoxicity amongst smokers, alcoholics, and tobacco chewers of North India using micronucleus assay and urinary 8-hydroxyl-2'-deoxyguanosine, as biomarkers.

The main objective of the present study was to screen the genotoxicity caused by individual and combined habits of smoking, tobacco chewing, and alcohol consumption in human population of North India. Study recruited 67 male subjects aged 25 to 65 years. Buccal mucosal cells were subjected to micronucleus (MN) assay, and 8-hydroxyl-2-deoxyguanosine (8-OHdG) was estimated in their urine samples.

Potential targetability of multi-walled carbon nanotube loaded with silver nanoparticles photosynthesized from Ocimum tenuiflorum (tulsi extract) in fertility diagnosis.

Nanocarrier mediated targeted delivery and biosensing in reproductive health care is a major exploratory domain. This work demonstrates the loading of silver nanoparticle (AgNP) inside the multiwalled carbon nanotube (MWCNT) and their targetability to the intracellular part of the sperm cell for its further application in biosensing based infertility diagnosis. Ocimum tenuiflorum (tulsi extract) mediated photosynthesized AgNP exhibited spherical shape, 5-40 nm size and surface plasmonic resonance at 430 nm.

Perspectives in endocrine toxicity of heavy metals--a review.

An attempt has been made to review the endocrine/hormonal implications of a few environmentally significant metals, viz, lead, mercury, cadmium, copper, arsenic and nickel, in man and animals. Special emphasis has been given to the adrenals, thyroid, testis, ovary and pancreas. Toxic metals can cause structural and functional changes in the adrenal glands.

An emerging interface between life science and nanotechnology: present status and prospects of reproductive healthcare aided by nano-biotechnology.

Among the various applications of nano-biotechnology, healthcare is considered one of the most significant domains. For that possibility to synthesize various kind of nanoparticles (NPs) and the ever-increasing ability to control their size as well as structure, to improve surface characteristics and binding NPs with other desired curing agents has played an important role. In this paper, a brief sketch of various kinds of nanomaterials and their biomedical applications is given.

Melatonin improves liver function in benzene-treated rats.

In this study, we investigated the beneficial effects of melatonin against benzene-induced liver function impairments in Wistar rats. After 30 days of treatment, it significantly lowered hepatosomatic indices, bilirubin, and hydroxyproline in male and female benzene-treated rats. Even though it did not influence aspartate aminotransferase, melatonin had beneficial effects on alanine aminotransferase and alkaline phosphatase.

Modulation of phase-II enzyme activities in benzene treated ovariectomized rats.

The aim of the study was to determine the influence of ovariectomy on phase II enzymes viz. glutathione-S-transferase (GST), glutathione peroxidase (GPX) and catalase (CAT) in liver and kidney of female rats treated with benzene. The results showed the significant decrease of the GST and GPX activity in benzene treated rats after ovariectomy.

An approach to noninvasive delivery, biodistribution, and fertility control potential evaluation of the Cuproferrogel iron oxide-copper-styrene maleic anhydride-dimethyl sulphoxide in the female.

Under guidance of an external pulsed magnetic field the Cuproferrogel iron oxide-copper-styrene maleic anhydride-dimethyl sulphoxide delivered into the rat/rabbit oviduct resulted in oocytes with granulated cytoplasm, zona enlargement, membrane disintegration, and finally loss of viability in 72 hours. Also, the percentage biodistribution of magnetic and electrically conductive particles observed under safe level advocates the use of Cuproferrogel as a potential female fertility control molecule.

Ascorbic acid improves mitochondrial function in liver of arsenic-treated rat.

Arsenic is an ubiquitous and well-documented carcinogenic metalloid. The most common source of arsenic is drinking water. The mechanism of arsenic toxicity in a cell has historically been centered around its inhibitory effects on cellular respiration and mitochondrial injury.

Melatonin inhibits benzene-induced lipid peroxidation in rat liver.

We studied the antioxidative role of melatonin against benzene toxicity in rat liver. The inhibition of mitochondrial and microsomal lipid peroxidation differed between 24-hour (single-dose), 15-day, and 30-day treatments. Inhibition of mitochondrial lipid peroxidation was the highest after the single dose of melatonin, whereas highest microsomal inhibition was recorded after 30 days of melatonin treatment.

Endocrinal toxicity of industrial solvents--a mini review.

Endocrine system can be affected by various organic compounds. The review describes the effects of major industrial solvents on adrenal, thyroid and parathyroid glands in man and experimental animals. Further, their toxicity in pancreas, pituitary, testis and ovary has also been discussed.

Effect of insulin on arsenic toxicity in diabetic rats—liver function studies.

Arsenic (iAs)-induced diabetic mellitus has been debated by several workers. However, role of insulin in iAs-induced diabetes is yet to be investigated. Present report suggests that iAs promotes insulin secretion in diabetic rats and inhibits hyperglycemia.

Metals and apoptosis: recent developments.

Apoptosis, also known as programmed cell death is a highly regulated and crucial process found in all multicellular organisms. It is not only implicated in regulatory mechanisms of cells, but has been attributed to a number of diseases, i.e.