Ornithine decarboxylase (ODC) is a key enzyme in polyamine biosynthesis. Increased
polyamine levels are required for growth, differentiation, and transformation of cells. In situ …

Amino acids, especially glutamine (GLN) have been known for many years to stimulate the
growth of small intestinal mucosa. Polyamines are also required for optimal mucosal growth …

In the brine shrimp, long‐term (several days) osmotic and ionic regulation is controlled
principally by the activity of Na+ K+ ATPase. However, short‐term cell volume regulation in …

The brown planthopper (BPH, Nilaparvata lugens), a major insect pest of rice, can make a
shift in wing dimorphism to adapt to complex external environments. Our previous study …

Experiments were designed to examine the effects of exogenously supplied putrescine on
the synthesis of DNA, RNA, and protein in cultured epithelial cells (IEC-6). Putrescine …

Retinoids elicit biological responses by activating a series of nuclear receptors. Six retinoid
receptors belonging to two families are currently known: retinoic acid receptors (RARa/j …

Blocks of potential Z-DNA-forming (dA-dC) n.(dG-dT) n sequences are ubiquitous in
eukaryotic genomes. We examined whether naturally occurring polyamines, putrescine …

Colonic adenocarcinoma affects approximately 6% of adults in many Western countries. β-
Carotene (BC), a safe, inexpensive, and widely available compound, has been proposed as …

Cyclobutane-type pyrimidine photodimers as well as the induction of ornithine
decarboxylase (ODC) may serve as biochemical markers of the mutagenic and carcinogenic …

Clinical practice and experimental studies have shown the necessity of sufficient quantities
of folic acid intake for normal embryogenesis and fetal development in the prevention of …