Matches in SemOpenAlex for { <https://semopenalex.org/work/W2769888932> ?p ?o ?g. }
- W2769888932 abstract "In mammals, biological rhythms are driven by a master circadian clock located in the suprachiasmatic nucleus (SCN) of the hypothalamus. Recently, we have demonstrated that in the camel, the daily cycle of environmental temperature is able to entrain the master clock. This raises several questions about the structure and function of the SCN in this species. The current work is the first neuroanatomical investigation of the camel SCN. We carried out a cartography and cytoarchitectural study of the nucleus and then studied its cell types and chemical neuroanatomy. Relevant neuropeptides involved in the circadian system were investigated, including arginine-vasopressin (AVP), vasoactive intestinal polypeptide (VIP), met-enkephalin (Met-Enk), neuropeptide Y (NPY), as well as oxytocin (OT). The neurotransmitter serotonin (5-HT) and the enzymes tyrosine hydroxylase (TH) and aromatic L-amino acid decarboxylase (AADC) were also studied. The camel SCN is a large and elongated nucleus, extending rostrocaudally for 9.55 ± 0.10 mm. Based on histological and immunofluorescence findings, we subdivided the camel SCN into rostral/preoptic (rSCN), middle/main body (mSCN) and caudal/retrochiasmatic (cSCN) divisions. Among mammals, the rSCN is unusual and appears as an assembly of neurons that protrudes from the main mass of the hypothalamus. The mSCN exhibits the triangular shape described in rodents, while the cSCN is located in the retrochiasmatic area. As expected, VIP-immunoreactive (ir) neurons were observed in the ventral part of mSCN. AVP-ir neurons were located in the rSCN and mSCN. Results also showed the presence of OT-ir and TH-ir neurons which seem to be a peculiarity of the camel SCN. OT-ir neurons were either scattered or gathered in one isolated cluster, while TH-ir neurons constituted two defined populations, dorsal parvicellular and ventral magnocellular neurons, respectively. TH colocalized with VIP in some rSCN neurons. Moreover, a high density of Met-Enk-ir, 5-HT-ir and NPY-ir fibers were observed within the SCN. Both the cytoarchitecture and the distribution of neuropeptides are unusual in the camel SCN as compared to other mammals. The presence of OT and TH in the camel SCN suggests their role in the modulation of circadian rhythms and the adaptation to photic and non-photic cues under desert conditions." @default.
- W2769888932 created "2017-12-04" @default.
- W2769888932 creator A5013482128 @default.
- W2769888932 creator A5015927521 @default.
- W2769888932 creator A5046414591 @default.
- W2769888932 creator A5049405982 @default.
- W2769888932 creator A5051077998 @default.
- W2769888932 creator A5056301770 @default.
- W2769888932 creator A5059526519 @default.
- W2769888932 creator A5081120701 @default.
- W2769888932 creator A5084150968 @default.
- W2769888932 date "2017-11-16" @default.
- W2769888932 modified "2023-10-14" @default.
- W2769888932 title "The Suprachiasmatic Nucleus of the Dromedary Camel (Camelus dromedarius): Cytoarchitecture and Neurochemical Anatomy" @default.
- W2769888932 cites W1415392696 @default.
- W2769888932 cites W1483678312 @default.
- W2769888932 cites W1498000437 @default.
- W2769888932 cites W1524845822 @default.
- W2769888932 cites W1530738262 @default.
- W2769888932 cites W1590214417 @default.
- W2769888932 cites W1712375177 @default.
- W2769888932 cites W1798864434 @default.
- W2769888932 cites W1860835232 @default.
- W2769888932 cites W1923518481 @default.
- W2769888932 cites W1961084257 @default.
- W2769888932 cites W1963758132 @default.
- W2769888932 cites W1965017076 @default.
- W2769888932 cites W1969524218 @default.
- W2769888932 cites W1971376975 @default.
- W2769888932 cites W1973369235 @default.
- W2769888932 cites W1976540475 @default.
- W2769888932 cites W1977145266 @default.
- W2769888932 cites W1978485246 @default.
- W2769888932 cites W1980432047 @default.
- W2769888932 cites W1981973755 @default.
- W2769888932 cites W1982380073 @default.
- W2769888932 cites W1985577308 @default.
- W2769888932 cites W1985598027 @default.
- W2769888932 cites W1986480551 @default.
- W2769888932 cites W1986608768 @default.
- W2769888932 cites W1987125712 @default.
- W2769888932 cites W1987402546 @default.
- W2769888932 cites W1991021245 @default.
- W2769888932 cites W1994536883 @default.
- W2769888932 cites W1994598171 @default.
- W2769888932 cites W1998553665 @default.
- W2769888932 cites W2000761987 @default.
- W2769888932 cites W2001711337 @default.
- W2769888932 cites W2002409637 @default.
- W2769888932 cites W2004282894 @default.
- W2769888932 cites W2004677349 @default.
- W2769888932 cites W2004830662 @default.
- W2769888932 cites W2007044256 @default.
- W2769888932 cites W2007049972 @default.
- W2769888932 cites W2009321128 @default.
- W2769888932 cites W2009914302 @default.
- W2769888932 cites W2011152523 @default.
- W2769888932 cites W2012021505 @default.
- W2769888932 cites W2012446969 @default.
- W2769888932 cites W2013168612 @default.
- W2769888932 cites W2013944154 @default.
- W2769888932 cites W2014084058 @default.
- W2769888932 cites W2014863164 @default.
- W2769888932 cites W2015402598 @default.
- W2769888932 cites W2015786747 @default.
- W2769888932 cites W2016100098 @default.
- W2769888932 cites W2016187658 @default.
- W2769888932 cites W2017571010 @default.
- W2769888932 cites W2020460680 @default.
- W2769888932 cites W2020551161 @default.
- W2769888932 cites W2022111197 @default.
- W2769888932 cites W2025622692 @default.
- W2769888932 cites W2026886271 @default.
- W2769888932 cites W2027095955 @default.
- W2769888932 cites W2027125623 @default.
- W2769888932 cites W2028405012 @default.
- W2769888932 cites W2029026390 @default.
- W2769888932 cites W2032185030 @default.
- W2769888932 cites W2032793852 @default.
- W2769888932 cites W2033758189 @default.
- W2769888932 cites W2036859135 @default.
- W2769888932 cites W2037176845 @default.
- W2769888932 cites W2038838661 @default.
- W2769888932 cites W2042370397 @default.
- W2769888932 cites W2042712051 @default.
- W2769888932 cites W2043168533 @default.
- W2769888932 cites W2043417320 @default.
- W2769888932 cites W2046491820 @default.
- W2769888932 cites W2049194182 @default.
- W2769888932 cites W2049247251 @default.
- W2769888932 cites W2051338474 @default.
- W2769888932 cites W2051577534 @default.
- W2769888932 cites W2051854872 @default.
- W2769888932 cites W2055055618 @default.
- W2769888932 cites W2055059469 @default.
- W2769888932 cites W2055208335 @default.
- W2769888932 cites W2055707825 @default.
- W2769888932 cites W2057136693 @default.
- W2769888932 cites W2057715585 @default.
- W2769888932 cites W2060006972 @default.