For accurate determination of CM number, the nuclearity of the CMs had to be taken into account, because most of the CMs in mice are binuclear [ 37].
We reported recently that histamine plays a critical role in the pathogenesis of experimental cerebral malaria (CM) in mice infected with Plasmodium berghei ANKA.
Experimental cerebral malaria (CM) in mice is a severe pathological condition resulting from infection with particular strains of Plasmodium parasites, namely Plasmodium berghei ANKA strain (Pb ANKA).
For an animal carrying a single tumour, the mean diameter should not normally exceed 1.2 cm in mice or 2.5 cm in rats, or 1.5 and 2.8 cm, respectively, for therapeutic studies.
A threshold of 20 cm in mice was also suggested by the instillation of relatively high mass doses of quite different particle species by Lison et al. (1997), namely, insoluble manganese dioxide dusts.
Interestingly, although enteroendocrine cells represent less than 1% of the total cellular gastrointestinal tract, Lkb1 deletion in the proglucagon-expressing cell population led to the development of tumours averaging in size between 1 to 3 cm in mice aged between 120 and 156 days, selectively in the duodenum.
This rate is higher than the genome wide average of 0.56 cM/Mb [40], and the genetic length of Chromosome 11 in this cross is very close to the length of Chromosome11 from the integrated map (83.1 cM) reported in Mouse Genome Database [41] and from the recently published revised map (80.85 cM) [35].
However, in the branch of the species tree comprising rabbit (Lagomorpha) and rodents, the number of exons decreased steadily from rabbit to kangaroo rat; neither medium-scoring hits nor hits of successive CMs were found in mouse or rat.
Nevertheless, susceptibility to experimental CM in the mouse has been linked to host genes including Transforming Growth Factor Beta 2 (TGFB2) and Heme oxygenase-1 (HMOX1).
A similar ryanodine induced effect was also reported in pacemaker cells isolated from rabbit sinoatrial node [37], in ESC-CMs [18], [30] and in mouse ESC-CMs [33].
