Results 51 to 60 of about 346,940 (303)

Alternative Methods for the Median Lethal Dose (LD50) Test: The Up-and-Down Procedure for Acute Oral Toxicity [PDF]

ILAR Journal, 2002
The authors have developed an improved version of the up-and-down procedure (UDP) as one of the replacements for the traditional acute oral toxicity test formerly used by the Organisation for Economic Co-operation and Development member nations to characterize industrial chemicals, pesticides, and their mixtures. This method improves the performance of
Amy, Rispin, David, Farrar, Elizabeth, Margosches, Kailash, Gupta, Katherine, Stitzel, Gregory, Carr, Michael, Greene, William, Meyer, Deborah, McCall   +8 more
openaire   +2 more sources

Phenotypic and genotypic characterization of single circulating tumor cells in the follow‐up of high‐grade serous ovarian cancer

Molecular Oncology, EarlyView.
Single circulating tumor cells (sCTCs) from high‐grade serous ovarian cancer patients were enriched, imaged, and genomically profiled using WGA and NGS at different time points during treatment. sCTCs revealed enrichment of alterations in Chromosomes 2, 7, and 12 as well as persistent or emerging oncogenic CNAs, supporting sCTC identity.
Carolin Salmon, Rui P. L. Neves, Nikolas H. Stoecklein, Sven‐Thorsten Liffers, Jens Siveke, Jan D. Kuhlmann, Pauline Wimberger, Paul Buderath, Rainer Kimmig, Sabine Kasimir‐Bauer   +9 more
wiley   +1 more source

Non-Lethal Dose-Response Models Replace Lethal Bioassays for Predicting the Hazard of Para-Aminopropiophenone to Australian Wildlife

Animals, 2023
Para-aminopropiophenone (PAPP) is a potent methaemoglobin (MetHb) forming agent used for the lethal control of exotic carnivores and mustelids. To assess the sensitivity of Australian wildlife to PAPP we developed an in vivo assay that did not use death ...
Clive A. Marks, Lee Allen, Heli Lindeberg   +2 more
doaj   +1 more source

Acute Toxicity (Lethal Dose 50 Calculation) of Herbal Drug Somina in Rats and Mice

Pharmacology & Pharmacy, 2015
Somina (herbal preparation) prepared by Hamdard Laboratories (Waqf) Pakistan is a mixture of five different medicinal plants, widely prescribed for the treatment of mental illness. For acute toxicity, the Karber arithmetic method for the calculation of LD50 and Hodge and Sterner toxicity scale was used. In this study, different doses (10, 100, 285, 500,
openaire   +2 more sources

Protease inhibitors targeting coronavirus and filovirus entry. [PDF]

, 2015
In order to gain entry into cells, diverse viruses, including Ebola virus, SARS-coronavirus and the emerging MERS-coronavirus, depend on activation of their envelope glycoproteins by host cell proteases.
Agudelo, Juliet, Barnard, Dale, Carrion, Ricardo, Lu, Kai, McKerrow, James H, Nunneley, Jerritt W, Pöhlmann, Stefan, Renslo, Adam R, Simmons, Graham, Vedantham, Punitha, Zhou, Yanchen   +10 more
core   +1 more source

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

Molecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee, Byung‐Cheol Han, Gi‐Bang Koo, Jihye Park, Mijin Kwon, Young Bin Park, Jae‐Mun Choi, Seung‐Ho Lee, Sangho Roh   +8 more
wiley   +1 more source

Assessment of the Antinociceptive, Anti-Inflammatory, and Acute Toxicity Effects of Solanum Dulcamara Essential Oil in Male Mice

Majallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Bābul, 2020
BACKGROUND AND OBJECTIVE: Pain is a complex set of unpleasant sensory, emotional, and cognitive experiences that are relieved with synthetic and herbal remedies. Of course, medicinal plants are more important than chemical drugs due to fewer side effects.
AR Fallahzadeh, S Mohammadi
doaj  

Determination of Lethal Dose 50 for Induced Mutagenesis in Soybean [Glycine max (L.) Merril] cv. Gepak Kuning Through Ethyl Methane Sulfonate Mutagen

Agricultural Science Digest - A Research Journal, 2023
Background: The improvement of the genetic and agronomic properties of cultivated plants can be carried out by various plant breeding methods, including mutation breeding. Mutations in nature are very few and rare. Ethyl Methane Sulfonate (EMS) is a chemical mutagen that can cause random mutations resulting in changes in genetic material.
Nilahayati ., Rd. Selvy Handayani, Nazimah ., Muhammad Sani Alfikri Harahap, Gusti Irawan, Rosmaina .   +5 more
openaire   +1 more source

The use of FK-506 for small intestine llotransplantation: Inhibition of acute rejection and prevention of fatal graft-versus-host disease [PDF]

, 1990
Small intestine allotransplantation in humans is not yet feasible due to the failure of the current methods of immunosuppression. FK-506, a powerful new immunosuppressive agent that is synergistic with cyclosporine, allows long-term survival of ...
Banner, B, Cai, X, Cramer, DV, Hoffman, AL, Makowka, L, Pascualone, A, Starzl, TE, Todo, S   +7 more
core   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source