Tyrosine hydroxylase positive neurons and their contacts with vasoactive intestinal polypeptide-containing fibers in the hypothalamus of the diurnal murid rodent, Arvicanthis niloticus

Distribution and morphology of putative catecholaminergic and serotonergic neurons in the brain of the greater canerat, Thryonomys swinderianus

“…Periglomerular TH+ neurons within the olfactory bulb appear to be homologous to the dopaminergic neurons reported previously in other rodent and other mammalian species (Lichtensteiger, 1966;Lidbrink et al, 1974;Lindvall and Björklund, 1974;Hökfelt et al, 1977;Björklund and Lindvall, 1984;Smeets and González, 2000;Moon et al, 2007). All nuclei previously reported for the catecholaminergic systems of the diencephalon, midbrain, pons and medulla in the laboratory rat (Dahlström and Fuxe, 1964;Fuxe et al, 1969;Lindvall and Björklund, 1974;Björklund and Lindvall, 1984;Hökfelt et al, 1976Hökfelt et al, , 1984, hamster (Vincent, 1988), grass rat (Mahoney et al, 2007), guinea pig (Mulders and Roberston, 2005), laboratory mouse (Ruggerio et al, 1984;Satoh et al, 1991;D'Este et al, 2007), highveld molerat (Da Silva et al, 2006), and highveld gerbil (Moon et al, 2007) were found in the greater canerat. Despite this there were two regions that displayed a qualitative difference of note.…”

“…A recent study of the phylogenetic occurrence of cortical cholinergic neurons in the cerebral cortex of various species of rodents showed that while these neurons are present in the cortex of the subfamily Muridae, they are not found in the cortex of other rodent species including the greater canerat (Bhagwandin et al, 2006). On the other hand, studies of two immunohistochemically identifiable systems (catecholaminergic and serotonergic systems) within the subcortical regions of the brain of various rodents, such as the laboratory rat (Dahlström and Fuxe, 1964;Fuxe et al, 1969Fuxe et al, , 1970Lindvall and Björklund, 1974;Björklund and Lindvall, 1984;Steinbusch, 1981;Hökfelt et al, 1976Hökfelt et al, , 1984Törk, 1990), laboratory mouse (Ruggerio et al, 1984;Daszuta and Portalier, 1985;Ishimura et al, 1988;Léger et al, 1998;Satoh et al, 1991;D'Este et al, 2007), highveld molerat (Da Silva et al, 2006), grass rat (Mahoney et al, 2007), guinea pig (Mulders and Roberston, 2005), hamster (Vincent, 1988), Mongolian gerbil (Janusonis et al, 1999(Janusonis et al, , 2003Janusonis and Fite, 2001), Chilean degus , and highveld gerbil (Moon et al, 2007), have all demonstrated that the nuclear organization of these systems are the same despite differences in phenotype, life history and millions of years of independent evolutionary trajectories.…”

Distribution and morphology of catecholaminergic and serotonergic neurons in the brain of the highveld gerbil, Tatera brantsii

“…All nuclei reported for the catecholaminergic systems of the hypothalamus, midbrain, pons and medulla in the laboratory rat (Dahlström and Fuxe, 1964;Fuxe et al, 1969;Lindvall and Björklund, 1974;Björklund and Lindvall, 1984;Hökfelt et al, 1984), grass rat (Mahoney et al, 2007), guinea pig (Mulders and Roberston, 2005) and inbred mice (D'Este et al, 2007) were found in the highveld gerbil and did not appear to be qualitatively different in any significant aspects. Of specific interest in comparative terms is the identification of the C3 group within the medulla of the highveld gerbil.…”

Differential hypothalamic tyrosine hydroxylase distribution and activation by light in adult mice reared under different light conditions during the suckling period

“…cells in the SPZ. This is not surprising, as photic information can easily reach the SPZ either through direct projections from the retina (Hannibal and Fahrenkrug 2004), and/or from the numerous projections from the SCN, through AVP, VIP and angiotensin fibres (Watts et al 1987;Abrahamson and Moore 2001;Mahoney et al 2007).…”

“…Moreover, TH varicosities have been shown to make contact with VIP ? neurons in the SCN (Mahoney et al 2007), and it is thus thought that TH? cells are involved in the integration of photic inputs to the SCN.…”