Multiple electrophoretic molecular variants of superoxide dismutase were demonstrated in normal rat mammary tissues and DMBA-induced rat mammary tumors. The specific activities of Cu/Zu superoxide dismutase in mammary tumors of estrogen-treated rats were not significantly different from those activities seen in normal rat mammary tissues. However, the enzyme activities of mammary tumors from untreated rats (no estrogen) were significantly lower than the activities of normal rat mammary tissues. Exogenous estrogen appeared to raise superoxide dismutase levels in DMBA-induced rat mammary tumors to those levels seen in normal rat mammary tissues.
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http://dx.doi.org/10.1016/0006-291x(83)91081-1 | DOI Listing |
Adv Exp Med Biol
January 2025
Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX, USA.
As the first mammal to be domesticated for research purposes, rats served as the primary animal model for various branches of biomedical research, including breast cancer studies, up until the late 1990s and early 2000s. During this time, genetic engineering of mice, but not rats, became routine, and mice gradually supplanted rats as the preferred rodent model. But recent advances in creating genetically engineered rat models, especially with the assistance of CRISPR/Cas9 technology, have rekindled the significance of rats as a critical model in exploring various facets of breast cancer research.
View Article and Find Full Text PDFInfect Agent Cancer
January 2025
Genetics and Cytology Department, National Research Centre, Dokki, 12622, Giza, Egypt.
Background: Cancer is a significant global health issue due to its high incidence and mortality rates. In recent years, the relationship between the human microbiota and cancer has garnered attention across various medical fields. This includes research into the microbial communities that influence cancer development, tumor-associated microorganisms, and the interactions between the microbiome and tumor, collectively referred to as the oncobiome.
View Article and Find Full Text PDFJ Mater Chem B
January 2025
Department of Chemistry, Amrita School of Physical Sciences Coimbatore, Amrita Vishwa Vidyapeetham, India.
We investigated the and uses of pamoic acid functionalized gold nanoparticles (PA@AuNPs), with a focus on determining their safety and potential toxicity in living beings. To test this theory, the bacterial interaction of PA@AuNPs was studied using , , and cultures, as well as the inhibition of the bovine serum albumin (BSA) protein. The real-time polymerase chain reaction (RT-PCR) is used to measure the expression of target genes.
View Article and Find Full Text PDFHeliyon
January 2025
Department of Traditional Chinese Medicine, Yangjiang People's Hospital, Yangjiang, Guangdong, 529525, China.
Objective: Eugenol (EU) from cloves is highly effective against different tumors. The long noncoding ribonucleic acids (lncRNAs), which play a role of competing endogenous RNAs (ceRNAs), suppress microRNAs (miRNAs) involved in post-transcriptional regulatory networks. The present work focused on analyzing how EU affected pre-cancerous breast lesions (PBL).
View Article and Find Full Text PDFInt Immunopharmacol
January 2025
Department of Plastic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, PR China; National Key Clinical Specialty (Wound Healing), The First Affiliate d Hospital Of Wenzhou Medical University, PR China. Electronic address:
This study aimed to investigate the effects of silicone implants on the incidence of breast cancer in rats, as well as their impact on immune surveillance mechanisms. Female SD rats were divided into three groups: a Placebo Surgery Group (PSG), a Thoracic Implant Group (TIG), and a Back Implant Group (BIG). Following the corresponding surgical procedures, we measured Secretoglobin Family 2A, Member 2(SCGB2A2) and Mucin-1 (MUC1) antigen levels using ELISA, and statistical analyses were conducted to evaluate immune responses.
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