271
Rubidium [Rb, 37]
administered, but it has a long biological half-life and caution is still required
(Paschalis et al. 1978).
Rubidium is a putative anticancer agent and the urinary levels of Rb were significantly and inversely associated with risk of breast cancer and had potential to be a
biomarker for breast cancer risk assessment (Su et al. 2011).
Salts of Rb are generally inert, and their toxicity is almost always a consequence
of the anion, not of the Rb + . Excessive exposure may trigger weakness, hypotension,
muscle twitching, and other symptoms of K deficiency. It may also interfere with
thyroid uptake of iodine.
It has no much information on Rb content in foodstuffs. However, published data
indicate relatively high Rb content in such products as cereals, rice, some vegetables,
tea, coffee, and chocolate (Table 39.2).
According to Hendrix et al. (1997), the worldwide Rb intake by adults varies
(in mg/day) between 1.2 and 7: in the United States, 2.8; in Belgium, 1.87–2.45; in
Japan, 2.34 (Shiraishi 2005); and in Russia, 2.2 mg/day (Gorbunov et al. 2004).
Rubidium [Rb, 37]
administered, but it has a long biological half-life and caution is still required
(Paschalis et al. 1978).
Rubidium is a putative anticancer agent and the urinary levels of Rb were significantly and inversely associated with risk of breast cancer and had potential to be a
biomarker for breast cancer risk assessment (Su et al. 2011).
Salts of Rb are generally inert, and their toxicity is almost always a consequence
of the anion, not of the Rb + . Excessive exposure may trigger weakness, hypotension,
muscle twitching, and other symptoms of K deficiency. It may also interfere with
thyroid uptake of iodine.
It has no much information on Rb content in foodstuffs. However, published data
indicate relatively high Rb content in such products as cereals, rice, some vegetables,
tea, coffee, and chocolate (Table 39.2).
According to Hendrix et al. (1997), the worldwide Rb intake by adults varies
(in mg/day) between 1.2 and 7: in the United States, 2.8; in Belgium, 1.87–2.45; in
Japan, 2.34 (Shiraishi 2005); and in Russia, 2.2 mg/day (Gorbunov et al. 2004).