Existing studies suggest that individual and household level economic shocks affect the demand for and supply of risky sex. However, little evidence exists on the effects of an aggregate shock on equilibrium risky sexual behavior. This paper examines the effects of the early twenty-first century copper boom on risky sexual behavior in Zambian copper mining cities. The results suggest that the c...

Trace elements such as copper are essential micronutrients. Traditionally, copper has been studied in the context of micronutrient deficiencies. Recent studies in both animals and humans, however, have revealed that elevated blood copper can also have adverse effects on cognitive function since free copper can cross the blood-brain barrier and subsequently impose oxidative stress to neuronal ce...

This study was conducted on 25 animals randomly selected from a herd with 40 feedlot cattle, which had poor growth, rough hair coat, and change in the colour of the hair coat. Blood samples were collected from the vena jugularis into the tubes containing Na2EDTA for the determination of plasma copper concentration and blood profile. Feed samples were also tested for copper, zinc, and molybdenum...

This study investigated the association of copper and zinc levels in the serum or urine of patients living in northeast China, with either prediabetes or diabetes. From January 2010 to October 2011, patients with type 1 diabetes (T1D, n = 25), type 2 diabetes (T2D, n = 137), impaired fasting glucose (IFG, n = 12) or impaired glucose tolerance (IGT, n = 15), and age/gender matched controls (n = ...

Plastocyanin and cytochrome c552 are interchangeable electron carriers in the photosynthetic electron transfer chains of some cyanobacteria and green algae (P. M. Wood, Eur. J. Biochem. 87:9-19, 1978; G. Sandmann et al., Arch. Microbiol. 134:23-27, 1983). Chlamydomonas reinhardi cells respond to the availability of copper in the medium and accordingly accumulate either plastocyanin (if copper i...

In 1928 Krebs reported that the concentration of copper in the serum was significantly raised in the terminal stages of pregnancy. Since that time this observation has been confirmed by a number of workers (Gorter, Grendel, and Weyers, 1931; Locke, Main, and Rosbash, 1932; Sachs, Levine, and Fabian, 1935; Nielsen, 1944), who have shown that at full term the serum copper level is approximately t...

Findings of this paper indicate that leucocyte copper has a significant link with the level of atherosclerosis found within the groups studied. Therefore copper may be involved in the mechanisms associated with ischaemic heart disease (IHD).

BACKGROUND Copper is essential as a trace element for metabolic processes. Exposure to copper in industries develops toxicity among the workers. Previous findings on adverse effects of copper on male reproductive function in adult albino rats led to investigate the effects of this metal on reproductive function of maturing male rats in the present experiment. METHODOLOGY To study these effect...