Publications by authors named "Madan Mohan Chaturvedi"

Exposure to ionizing radiation (IR) set a series of deleterious events causing acute radiation syndrome and mortality, posing the need for a potent and safe radio-protective drug. IR induces cell death predominantly by causing oxidative stress and macromolecular damage. The pre-existing antioxidant defence machinery of the cellular system plays a crucial role in protecting the cells against oxidative stress by activation of Nrf2.

View Article and Find Full Text PDF

Radiation-induced DNA damage initiates a series of overlapping responses that include DNA damage recognition and repair, induction of cell cycle checkpoints, senescence and/or apoptosis. This study assessed the DNA damage response and whole genome expression profile in two mammalian cell lines (HEK and U87) in response to (5-{4-methylpiperazin-1-yl}-2-[2'-(3,4-dimethoxyphenyl)-5'-benzimidazolyl] benzimidazole) DMA and ionizing radiation. DMA has been shown to act as a potent radiation protector, yielding significant levels of protection, i.

View Article and Find Full Text PDF

Objective: To ascertain the association of -3826 A/G polymorphism with blood pressure and different obesity markers.

Design And Subjects: A total of 96 adult participants (49 males, 47 females) were studied. Anthropometric measurements and blood pressure were taken using standardized techniques.

View Article and Find Full Text PDF

Glutamate dehydrogenase (GDH) enzyme is recently being reported to be present in the nucleus in addition to the mitochondria in a number of organisms. Here we investigated the distribution of GDH in liver and brain tissues of chicken. Polyclonal anti-GDH antibody against bovine GDH was raised by us, which was later shown to be immunereactive to chicken GDH.

View Article and Find Full Text PDF

Objective: To investigate lipopolysaccharide (LPS)-induced DNA damage in preimplanting embryonic and uterine cells during preimplantation period of pregnancy that may ultimately inhibit the process of implantation in mouse.

Design: Animal study.

Setting: Academic research environment.

View Article and Find Full Text PDF
Article Synopsis
  • CSF-1 is crucial for mammalian embryonic development and implantation, and its expression can be affected by external factors like bacterial LPS.
  • Research shows that LPS treatment leads to a significant number of abnormal embryos in both normal and superovulated mice, indicating implantation issues.
  • The alteration in CSF-1 expression levels and patterns during the preimplantation period after LPS exposure suggests it may contribute to the observed implantation failures.
View Article and Find Full Text PDF
Article Synopsis
  • Infections caused by gram-negative bacteria in pregnant women can lead to serious complications such as abortions and preterm labor, primarily due to components like LPS that trigger inflammation.
  • Research focused on the impact of LPS on IL-1beta levels during the preimplantation period in mice, revealing that LPS significantly affects uterine tissue and macrophage recruitment, crucial for embryo implantation.
  • The findings suggest that LPS disrupts normal uterine conditions and IL-1beta expression, indicating its role in pregnancy loss or implantation failure.
View Article and Find Full Text PDF

Gram-negative bacterial lipopolysaccharides (LPS) are known causative agents for pregnancy loss in mothers with genital tract infections. In this study, we attempt to test the role of tumor necrosis factor-α (TNF-α) in the normal physiological processes of preimplantation embryonic development and LPS induced pregnancy loss in mice. Since the preimplantation mouse embryos grow in an unattached state for a considerable period (day 1-4.

View Article and Find Full Text PDF

Introduction: Intrauterine infection is frequently associated with pregnancy loss in pregnant women.

Discussion: This article reviews the role of Gram-negative bacterial infection in various complications related to early pregnancy and subsequent pregnancy loss. Here we discuss the pathways of ascending intrauterine infection, microbiology and the pathophysiology of such infections.

View Article and Find Full Text PDF