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1.
Dr. Shaun P. Collin 《Cell and tissue research》1989,256(2):327-335
Summary Cobaltous-lysine is transported anterogradely from the optic nerve of the teleost, Lethrinus chrysostomus (Lethrinidae, Perciformes). The marginal optic tract is labelled in longtitudinal bands of light and dark staining fibres which persists caudally within the ventral division but not in the dorsal division. This species possesses multiple central targets in the contralateral preoptic, diencephalic, pretectal, periventricular and tectal regions of the brain. In addition, a greater subdivision of the marginal optic tract is found to project to various nuclei. Ipsilateral projections are found in the suprachiasmatic nucleus and in the region of the horizontal commissure. Projections are also found in the telencephalic region of the nucleus olfactoretinalis and the thalamic region of the nucleus thalamoretinalis. The retinotopicity of some of these nuclei, found in previous studies, is discussed in relation to the possibility of specific sub-populations of retinal ganglion cells having different central targets.Abbreviations used in the Text and Figures
A
nucleus anteriorthalami
-
AO
accessory optic nucleus
-
AOT
accessory optic tract
-
AxOT
axial optic tract
-
BO
nucleus of the basal optic root
-
C
cerebellum
-
HCv
ventral division of horizontal commissure
-
I
nucleus intermedius thalami
-
IL
inferior lobe
-
MdOT
medial optic tract
-
MO
medulla oblongata
-
MOTd
dorsal division of the marginal optic tract
-
MOTi
intermediate division of the marginal optic tract
-
MOtv
ventral division of the marginal optic tract
-
O
olfactory bulb
-
OT
optic tract
-
PC
nucleus pretectalis centralis
-
PCo
posterior commissure
-
Pd
nucleus pretectalis dorsalis
-
PG
preglomerular complex
-
PPd
nucleus pretectalis periventricularis, pars dorsalis
-
PPv
nucleus pretectalis periventricularis, pars ventralis
-
PSm
nucleus pretectalis superficial pars magnocellularis
-
PSp
nucleus pretectalis superficialis, pars parvocellularis
-
Sn
suprachiasmatic nucleus
-
TEL
telencephalon
-
TeO
optic tectum
-
TL
torus longtitudinalis
-
TrOlfR
tractus olfactoretinalis
-
VCg
granular layer of the valvula cerebelli
-
VCm
molecular layer of the valvula cerebelli
-
VM
nucleus medialis thalami
-
VL
nucleus ventrolateralis thalami
-
VMdOT
ventro-medial optic tract 相似文献
2.
N. Aste C. Viglietti-Panzica A. Fasolo C. Andreone H. Vaudry G. Pelletier G. C. Panzica 《Cell and tissue research》1991,265(2):219-230
Summary In the present study, we have demonstrated, by means of the biotin-avidin method, the widespread distribution of neuropeptide Y (NPY)-immunoreactive structures throughout the whole brain of the Japanese quail (Coturnix coturnix japonica). The prosencephalic region contained the highest concentration of both NPY-containing fibres and perikarya. Immunoreactive fibres were observed throughout, particularly within the paraolfactory lobe, the lateral septum, the nucleus taeniae, the preoptic area, the periventricular hypothalamic regions, the tuberal complex, and the ventrolateral thalamus. NPY-immunoreactive cells were represented by: a) small scattered perikarya in the telencephalic portion (i.e. archistriatal, neostriatal and hyperstriatal regions, hippocampus, piriform cortex); b) medium-sized cell bodies located around the nucleus rotundus, ventrolateral, and lateral anterior thalamic nuclei; c) small clustered cells within the periventricular and medial preoptic nuclei. The brainstem showed a less diffuse innervation, although a dense network of immunopositive fibres was observed within the optic tectum, the periaqueductal region, and the Edinger-Westphal, linearis caudalis and raphes nuclei. Two populations of large NPY-containing perikarya were detected: one located in the isthmic region, the other at the boundaries of the pons with the medulla. The wide distribution of NPY-immunoreactive structures within regions that have been demonstrated to play a role in the control of vegetative, endocrine and sensory activities suggests that, in birds, this neuropeptide is involved in the regulation of several aspects of cerebral functions.Abbreviations
AA
archistriatum anterius
-
AC
nucleus accumbens
-
AM
nucleus anterior medialis
-
APP
avian pancreatic polypeptide
-
CNS
centrai nervous system
-
CO
chiasma opticum
-
CP
commissura posterior
-
CPi
cortex piriformis
-
DIC
differential interferential contrast
-
DLAl
nucleus dorsolateralis anterior thalami, pars lateralis
-
DLAm
nucleus dorsolateralis anterior thalami, pars medialis
-
E
ectostriatum
-
EW
nucleus of Edinger-Westphal
-
FLM
fasciculus longitudinalis medialis
-
GCt
substantia grisea centralis
-
GLv
nucleus geniculatus lateralis, pars ventralis
-
HA
hyperstriatum accessorium
-
Hp
hippocampus
-
HPLC
high performance liquid chromatography
-
HV
hyperstriatum ventrale
-
IF
nucleus infundibularis
-
IO
nucleus isthmo-opticus
-
IP
nucleus interpeduncularis
-
IR
immunoreactive
-
LA
nucleus lateralis anterior thalami
-
LC
nucleus linearis caudalis
-
LFS
lamina frontalis superior
-
LH
lamina hyperstriatica
-
LHRH
luteinizing hormone-releasing hormone
-
LoC
locus coeruleus
-
LPO
lobus paraolfactorius
-
ME
eminentia mediana
-
N
neostriatum
-
NC
neostriatum caudale
-
NPY
neuropeptide Y
-
NIII
nervus oculomotorius
-
NV
nervus trigeminus
-
NVI
nervus facialis
-
NVIIIc
nervus octavus, pars cochlearis
-
nIV
nucleus nervi oculomotorii
-
nIX
nucleus nervi glossopharyngei
-
nBOR
nucleus opticus basalis (ectomamilaris)
-
nCPa
nucleus commissurae pallii
-
nST
nucleus striae terminalis
-
OM
tractus occipitomesencephalicus
-
OS
nucleus olivaris superior
-
PA
palaeostriatum augmentatum
-
PBS
phosphate-buffered saline
-
POA
nucleus praeopticus anterior
-
POM
nucleus praeopticus medialis
-
POP
nucleus praeopticus periventricularis
-
PP
pancreatic polypeptide
-
PYY
polypeptide YY
-
PVN
nucleus paraventricularis magnocellularis
-
PVO
organum paraventriculare
-
R
nucleus raphes
-
ROT
nucleus rotundus
-
RP
nucleus reticularis pontis caudalis
-
Rpc
nucleus reticularis parvocellularis
-
RPgc
nucleus reticularis pontis caudalis, pars gigantocellularis
-
RPO
nucleus reticularis pontis oralis
-
SCd
nucleus subcoeruleus dorsalis
-
SCv
nucleus subcoeruleus ventralis
-
SCNm
nucleus suprachiasmaticus, pars medialis
-
SCNl
nucleus suprachiasmaticus, pars lateralis
-
SL
nucleus septalis lateralis
-
SM
nucleus septalis medialis
-
Ta
nucleus tangentialis
-
TeO
tectum opticum
-
Tn
nucleus taeniae
-
TPc
nucleus tegmenti pedunculo-pontinus, pars compacta
-
TSM
tractus septo-mesencephalicus
-
TV
nueleus tegmenti ventralis
-
VeL
nucleus vestibularis lateralis
-
VLT
nucleus ventrolateralis thalami
-
VMN
nucleus ventromedialis hypothalami
A preliminary report of this study was presented at the 15th Conference of European Comparative Endocrinologists, Leuven, Belgium, September 1990 相似文献
3.
The distribution of oxytocin (OXT) and vasopressin (VP) neurons in the diencephalon of the hibernating Japanese horseshoe bat, Rhinolophus ferrumequinum, was immunohistochemically investigated by the avidin-biotin complex method. Magnocellular OXT and VP neurons were localized mainly in the paraventricular nucleus and the supraoptic nucleus. In addition to these main nuclei, both kinds of magnocellular neurons were also found in the periventricular nucleus, perifornical area and lateral hypothalamic area. Extensively distributed parvocellular neurons containing only VP were observed in the rostral and middle portions of the suprachiasmatic nucleus. The size of OXT and VP magnocellular neurons was almost equal in the paraventricular and ventromedial supraoptic nuclei, whereas VP neurons were significantly larger than OXT neurons in the dorsolateral supraoptic nucleus. The OXT and VP cells in the ventral supraoptic nucleus showed a distinctive elliptical shape. Both OXT and VP fibers were distributed in the lateral habenular nucleus, stria medullaris thalami, lateral preoptic area, stria terminalis, and medial and supracapsular part of the bed nucleus of the stria terminalis. Moreover, OXT fibers were found in the substantia nigra, and VP fibers were noted in the nucleus reunions and the paraventricular nucleus of the thalamus. 相似文献
4.
Mimi Halpern 《Journal of morphology》1976,150(2):553-578
The efferent connections of the olfactory bulb and accessory olfactory bulb of two species of garter snakes, Thamnophis sirtalis and T. radix were studied with experimental anterograde degeneration techniques. Axons of cells located in the olfactory bulb terminate ipsilaterally in all parts of the anterior olfactory nucleus, olfactory tubercle and lateral pallium. In addition, some axons enter the ipsilateral stria medullaris thalami, cross the midline in the habenular commissure, enter the contralateral stria medullaris thalami and terminate in the contralateral lateral pallium. The axons of cells in the accessory olfactory bulb course through the telencephalon completely separated from the fibers of olfactory bulb origin and terminate predominantly in the nucleus sphericus. These results confirm previous reports of the separation between the central projections of the olfactory and vomeronasal systems in a variety of vertebrates. The totality of the separation between these two systems coupled with the extensive development of the vomeronasal-accessory bulb system in these snakes suggests that they may be ideal subjects for further research on the functional significance of the vomeronasal system. 相似文献
5.
Somatostatin-immunoreactive fiber projections into the brain stem and the spinal cord of the rat 总被引:2,自引:0,他引:2
Dr. Brigitte Krisch 《Cell and tissue research》1981,217(3):531-552
Summary By use of the PAP-immunohistochemical staining technique with serial sections, somatostatin-immunoreactive fiber projections into the brain stem and the spinal cord are described. These projections originate in the periventricular somatostatin-immunoreactive perikarya of the hypothalamus and form three main pathways: (1) along the stria medullaris thalami and the fasciculus retroflexus into the interpeduncular nucleus; (2) along the medial forebrain bundle into the mammillary body; and (3) via the periventricular gray and the bundle of Schütz into the midbrain tegmentum. Densely arranged immunoreactive fibers and/or basket-like fiber terminals are observed within the following afferent systems: somatic afferent systems (nucleus spinalis nervi trigemini, substantia gelatinosa dorsalis of the entire spinal cord), and visceral afferent systems (nucleus solitarius, regio intermediolateralis and substantia gelatinosa of the sacral spinal cord). These projections form terminals around the perikarya of the second afferent neuron. Perikarya of the third afferent neuron are influenced by somatostatin-immunoreactive projections into the auditory system (nucleus dorsalis lemnisci lateralis, nucleus corporis trapezoidei). Furthermore, a somatostatin-immunoreactive fiber projection is found in the ventral part of the medial accessory olivary nucleus, in nuclei of the limbic system (nucleus habenularis medialis, nuclei supramamillaris and mamillaris lateralis) and in the formatio reticularis (nucleus Darkschewitsch, nuclei tegmenti lateralis and centralis, nucleus parabrachialis lateralis, as well as individual perikarya of the reticular formation). Targets of these projections are interneurons within interlocking neuronal chains.Supported by the Deutsche Forschungsgemeinschaft (Grant Nr. Kr 569/3) and Stiftung Volkswagenwerk 相似文献
6.
Summary Central pathways of the nervus terminalis (n.t.) in the bichir, Polypterus palmas, were studied with the use of tracing techniques. After application of horseradish peroxidase to the unilateral olfactory mucosa labeled n.t. fibers were traced in seven distinct bundles through the subpallium. Projection areas are found in the precommissural ventral nucleus of the area ventralis telencephali ipsilaterally, the anterior commissure and commissural parts of the periventricular preoptic nucleus bilaterally; few n.t.-fibers cross via the anterior commissure to the contralateral side; no fibers were observed to turn rostrally to the contralateral olfactory bulb. Major targets of the n.t. include a restricted ventral part of the periventricular preoptic nucleus at the level of the optic chiasma bilaterally, and the periventricular nuclei located between the thalamic nuclei and the hypothalamus bilaterally. N.t. fibers continue their course through the ipsilateral hypothalamus and are traced as far as the mesencephalic tegmentum ipsilaterally. N.t. terminations are found consistently within the boundaries of periventricular cell nuclei, suggesting axosomatic synaptic contacts. We propose a differentiation of the n.t. ganglion cells into a distal (mucosal) and proximal (bulbar) type regarding the peripheral cell processes. Our findings are compared with those of other reports on the n.t. system. 相似文献
7.
Dr. M. Olivereau F. Ollevier F. Vandesande J. Olivereau 《Cell and tissue research》1984,238(2):289-296
Summary Immunocytochemical investigations show that somatostatin (SRIF)-like immunoreactive material is present in the brain and the pituitary of nine different species of teleosts. In the brain, immunoreactive perikarya and fibers are observed in the preoptic periventricular nucleus, the entopeduncular nucleus, the anterior periventricular nucleus, and the nucleus lateralis tuberis. In the pituitary, SRIF-like-immunoreactive fibers occur in the proximal pars distalis (PPD), which contains the growth hormone (GH)-secreting cells. Nerve fibers are scattered among GH cells (cyprinids), or end on the basal lamina at the neuroglandular interface of the PPD (eel, salmonids). In the eel, the proximal neurohypophysis does not penetrate deeply into the PPD that is very poorly vascularized. In some species, e.g. Myoxocephalus, SRIF-like immunoreactive fibers are also observed in the caudal neurohypophysis, and even among MSH cells of the pars intermedia.In long-term starved carps and eels, the amount of SRIF-like material in the pituitary is clearly reduced. A possible role of SRIF in the concomitant stimulation of GH cells is discussed. 相似文献
8.
Dr. Brigitte Krisch 《Cell and tissue research》1977,179(2):211-224
Summary Using the immunoenzyme bridge-technique at the light and electron microscopic levels, somatostatin can be demonstrated in the perikarya of the anterior periventricular nucleus, in the median eminence and in the parvocellular hypothalamic nuclei of the rat. In the latter regions the perikarya are negative, whereas a positive reaction for somatostatin is found in a delicate network of fibers and middle-sized granules of very small axons. In light of these results, the double function of somatostatin — as release inhibiting hormone and as transmitter — is discussed. The positive staining reaction in the organum vasculosum laminae terminalis of male and female rats as well as in the subfornical organ, the nucleus dorsalis thalami and the nucleus medialis habenulae in female controls and pregnant rats is not due to somatostatin-containing structures, but partly to substance P and partly to a substance which could not be defined.Supported by the Deutsche Forschungsgemeinschaft (Grant Nr. Kr. 569/1) and Stiftung Volkswagenwerk 相似文献
9.
Soihan L. Manocha 《The Histochemical journal》1970,2(3):249-260
Synopsis Histochemical investigations have been made on the localization of certain oxidative and hydrolytic enzymes in the different areas of rhesus monkey brain using unfixed, freshfrozen tissue and 3% glutaraldehyde-fixed material. After glutaraldehyde fixation, the oxidative enzymes lose most of their activity normally demonstrable in the fresh-frozen section. The hydrolytic enzymes are somewhat resistant to fixation but also lose about half of the enzyme activity observed after no fixing procedure. The glycogen is better preserved in the glutaraldehyde-fixed material compared to fresh-frozen or even formaldehyde-fixed tissue. The significance of these observations is discussed in relation to glutaraldehyde as a fixative of choice in electron histochemistry.List of abbreviations used in the Figures ALH
area lateralis hypothalami
- APH
area posterior hypothalami
- AS
aquaeductus Sylvii
- ATN
anterior thalamic nuclei
- BC
brachium conjunctivum
- CC
corpus callosum
- CD
nucleus caudatus
- CI
capsula interna
- CIS
cortex insularis
- CM
centrum medianum thalami
- COR
corona radiata
- CP
commissura posterior
- CSR
colliculus superior
- EM
eminentia medialis
- F
fornix
- GC
substantia grisea centralis
- GLM
corpus geniculatum laterale, magnocellular part
- GLP
corpus geniculatum laterale, parvocellular part
- GP
globus pallidus
- LD
nucleus lateralis dorsalis thalami
- LME
lamina medullaris externa thalami
- LMI
lamina medullaris interna thalami
- LP
nucleus lateralis posterior thalami
- MD
nucleus medialis dorsalis thalami
- ML
nucleus lateralis corpus mammillaris
- MM
nucleus medialis corpus mammillaris
- NC
nucleus centralis thalami
- NCI
nucleus colliculi inferioris
- NLL
nucleus lemnisci lateralis
- NR
nucleus ruber
- NSTH
nucleus subthalamicus
- N III
nervus oculomotorius
- PC
nucleus paracentralis thalami
- PCR
pedunculus cerebri
- PUT
Putamen
- PV
nucleus paraventricularis hypothalami
- R
nucleus reticularis thalami
- RU
nucleus reuniens thalami
- SM
stria medullaris thalami
- SMH
nucleus supramammillaris hypothalami
- SMT
nucleus submedius thalami
- SN
substantia nigra
- TO
tractus opticus
- VL
nucleus ventralis lateralis thalami
- VP
nucleus ventralis posterior thalami
- ZI
zona incerta
- II
ventriculus lateralis
- III
ventriculus tertius 相似文献
10.
Triepel J. Mader J. Weindl A. Heinrich D. Forssmann W. G. Metz J. 《Histochemistry and cell biology》1984,81(6):509-516
Summary The occurrence and distribution of neurotensin-immunoreactive (NT-IR) perikarya was studied in the central nervous system of the guinea pig using a newly raised antibody (KN 1). Numerous NT-IR perikarya were found in the nuclei amygdaloidei, nuclei septi interventriculare, hypothalamus, nucleus parafascicularis thalami, substantia grisea centralis mesencephali, ventral medulla oblongata, nucleus solitarius and spinal cord. The distribution of NT-IR perikarya was similar to that previously described in the rat and monkey. In the gyrus cinguli, hippocampus and nucleus olfactorius, though, no NT-IR neurons were detected in this investigation. Additional immunoreactive perikarya, however, were observed in areas of the ventral medulla oblongata, namely in the nucleus paragigantocellularis, nucleus retrofacialis and nucleus raphe obscurus.The relevance of the NT-IR perikarya within the ventral medulla oblongata is discussed with respect to other neuropeptides, which are found in this area, and to cardiovascular regulation.Abbreviations abl
nucleus amygdaloideus basalis lateralis
- abm
nucleus amygdaloideus basalis medialis
- acc
nucleus amygdaloideus centralis
- aco
nucleus amygdaloideus corticalis
- ahp
area posterior hypothalami
- ala
nucleus amygdaloideus lateralis anterior
- alp
nucleus amygdaloideus lateralis posterior
- ame
nucleus amygdaloideus medialis
- atv
area tegmentalis ventralis
- bst
nucleus proprius striae terminalis
- CA
commissura anterior
- CC
corpus callosum
- cgld
corpus geniculatum laterale dorsale
- cglv
corpus geniculatum laterale ventrale
- cgm
corpus geniculatum mediale
- CHO
chiasma opticum
- CI
capsula interna
- co
nucleus commissuralis
- cod
nucleus cochlearis dorsalis
- cp
nucleus caudatus/Putamen
- cs
colliculus superior
- cu
nucleus cuneatus
- dmh
nucleus dorsomedialis hypothalami
- DP
decussatio pyramidum
- em
eminentia mediana
- ent
cortex entorhinalis
- epi
epiphysis
- FLM
fasciculus longitudinalis medialis
- fm
nucleus paraventricularis hypothalami pars filiformis
- FX
fornix
- gd
gyrus dentatus
- gp
globus pallidus
- gr
nucleus gracilis
- hl
nucleus habenulae lateralis
- hm
nucleus habenulae medialis
- hpe
hippocampus
- ift
nucleus infratrigeminalis
- io
oliva inferior
- ip
nucleus interpeduncularis
- LM
lemniscus medialis
- MT
tractus mamillo-thalamicus
- na
nucleus arcuatus
- nls
nucleus lateralis septi
- nms
nucleus medialis septi
- npca
nucleus proprius commissurae anterioris
- ns
nucleus solitarius
- n III
nucleus nervi oculomotorii
- nt V
nucleus tractus spinalis nervi trigemini
- ntm
nucleus mesencephalicus nervi trigemini
- osc
organum subcommissurale
- P
tractus cortico-spinalis
- PC
pedunculus cerebri
- PCI
pedunculus cerebellaris inferior
- pir
cortex piriformis
- pol
area praeoptica lateralis
- pom
area praeoptica medialis
- prt
area praetectalis
- pt
nucleus parataenialis
- pvh
nucleus paraventricularis hypothalami
- pvt
nucleus paraventricularis thalami
- r
nucleus ruber
- re
nucleus reuniens
- rgi
nucleus reticularis gigantocellularis
- rl
nucleus reticularis lateralis
- rm
nucleus raphe magnus
- ro
nucleus raphe obscurus
- rp
nucleus raphe pallidus
- rpc
nucleus reticularis parvocellularis
- rpgc
nucleus reticularis paragigantocellularis
- sch
nucleus suprachiasmaticus
- SM
stria medullaris thalami
- snc
substantia nigra compacta
- snl
substantia nigra lateralis
- snr
substantia nigra reticularis
- ST
stria terminalis
- tad
nucleus anterior dorsalis thalami
- tam
nucleus anterior medialis thalami
- tav
nucleus anterior ventralis thalami
- tbl
nucleus tuberolateralis
- tc
nucleus centralis thalami
- tl
nucleus lateralis thalami
- tmd
nucleus medialis dorsalis thalami
- TO
tractus opticus
- TOL
tractus olfactorium lateralis
- tpo
nucleus posterior thalami
- tr
nucleus reticularis thalami
- trs
nucleus triangularis septi
- TS
tractus solitarius
- TS V
tractus spinalis nervi trigemini
- tvl
nucleus ventrolateralis thalami
- vmh
nucleus ventromedialis hypothalami
- vh
ventral horn, Columna anterior
- zi
zona incerta
Supported by the Deutsche Forschungsgesellschaft (DFG) SFB 90, Carvas 相似文献
11.
Catherine R. Propper Richard E. Jones Kristin H. Lopez 《Cell and tissue research》1992,267(2):391-398
Summary The distribution of immunoreactive arginine vasotocin (AVT-ir) was determined in the brain of the lizard Anolis carolinensis. Cells and fibers containing AVT-ir were found in the medial septal region, lamina terminalis, lateral forebrain bundle, preoptic area, supraoptic nucleus, anterior hypothalamus, paraventricular nucleus, periventricular nucleus, arcuate nucleus, and ventromedial nucleus of the thalamus. Occasional AVT-ir cells were found in the interpeduncular nucleus. Fibers containing AVT-ir were found in the cortex, around the olfactory ventricle, in the diagonal band of Broca, amygdala area, dorsal ventricular ridge, striatum, nucleus accumbens, septum, ventromedial hypothalamus, lateral hypothalamus, medial forebrain bundle, median eminence, pars nervosa, nucleus of the solitary tract, locus coeruleus, cerebellar cortex (granular layer), dorsal part of the nucleus of the lateral lemniscus, substantia nigra, and myelencephalon. The intensity of AVT-ir staining was, in general, greater in males than in females. Comparison of AVT-ir distribution in A. carolinensis with those previously published for other reptilian species revealed species-specific differences in distribution of AVT. 相似文献
12.
Summary The magnocellular paraventricular and supraoptic nuclei and the parvocellular preoptic and periventricular nuclei have been studied by light and electron microscopy in Emys orbicularis, Lacerta agilis and Elaphe longissima. The ultrastructure of cerebrospinal fluid (CSF)-contacting neurons was described in the preoptic and periventricular nuclei of Emys and Lacerta species. Single 9×2+0 cilia similar to those of the CSF-contacting dendritic terminals were found on perikarya of non CSF-contacting nerve cells, in all four investigated nuclei. The cilia project from funnel-like invaginations of the perikarya into the intercellular space. In the neurons of the nuclei studied, granular vesicles were found, their size being mainly 1,600 Å in the paraventricular nucleus, about 1,800 Å in the supraoptic nucleus, 1,100 Å in the periventricular nucleus and 800 Å, or up to 1,250 Å in the preoptic nucleus. In general, the neurons possess synapses of the axo-somatic, axo-somatic spine, axo-dendritic and axo-dendritic spine types. In the supraoptic nucleus, multiple interdigitated synapses were observed. Presynaptically, either synaptic vesicles only, or synaptic vesicles and dense core vesicles of different sizes (600 to 800 Å, about 1,100 Å, 1250 Å, and up to 2,000 Å) were found. It is discussed whether the above described 9×2+0 cilia may represent some kind of hypothalamic sensory structure that earlier physiological studies postulated to exist. The ciliated hypothalamic perikarya are considered by the authors to be a more differentiated form of the CSF-contacting neurons. The different types of synapses indicate multilateral connections of the nerve cells of the nuclei studied.Dedicated to Prof. Dr. Berta Scharrer on the occasion of her 70th birthday 相似文献
13.
Zambotti-Villela L Marinho CE Alponti RF Silveira PF 《Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology》2008,178(1):57-66
The effects of water and salt overload on the activities of the supraoptic and paraventricular nuclei and the adjacent periventricular
zone of the hypothalamus of the snake Bothrops jararaca were investigated by measurements of Fos-like immunoreactivity (Fos-ir). Both water and salt overload resulted in changes
in body mass, plasma osmolality, and plasma concentrations of sodium, potassium, and chloride. Hyper-osmolality increased
Fos immunoreactivity in the rostral supraoptic nucleus (SON), the paraventricular nucleus (PVN), and adjacent periventricular
areas. Both hyper- and hypo-osmolality increased Fos immunoreactivity in the intermediate SON, but not in other areas of the
hypothalamus. Immunostaining was abundant in cerebrospinal fluid (CSF)-contacting tanycyte-like cells in the ependymal layer
of the third ventricle. These data highlight some features of regional distribution of Fos immunoreactivity that are consistent
with vasotocin functioning as a hormone, and support the role of hypothalamic structures in the response to disruption of
salt and water balance in this snake. 相似文献
14.
The distribution of neuropeptide Y-like immunoreactivity in the brain and hypophysis of the brown hagfish, Paramyxine atami, was examined by use of the peroxidase-antiperoxidase method. Immunoreactive cells were found in two areas of the brain, the nucleus hypothalamicus of the diencephalon and the ventrolateral area of the caudal tegmentum, at the level of the nucleus motorius V–VII. The labeled cells of the nucleus hypothalamicus were loosely grouped and recognized as bipolar neurons. Immunolabeled fibers were widely distributed in the brain, showing the highest density in the diencephalon. They were sparse, or absent, in the olfactory bulb, habenula, primordium hippocampi, neurohypophysis, corpus interpedunculare, and dorsolateral area of the medulla oblongata. The fibers appeared to project exclusively from the ventral hypothalamus to various other portions of the brain: the anterolateral areas of the telencephalon via the basal hypothalamus, the pars dorsalis thalami, the dorsocaudal region of the mesencephalon, and the ventromedial portions of the tegmentum and anterior medulla oblongata. These findings suggest that, in the brown hagfish, NPY-like substance is involved in neuroregulation of various cerebral areas, but it may be of little significance in the control of pituitary function. 相似文献
15.
Dr. Horst -W. Korf Carla Viglietti-Panzica Gian C. Panzica 《Cell and tissue research》1983,228(1):149-163
The present investigation based on classical neurohistological techniques (Nissl-staining, Golgi-impregnation) was focussed on the cytoarchitecture of the periventricular layer of the paraventricular nucleus in the Pekin duck. This region is endowed with intraependymal neurons, the perikarya of which are mostly covered by a thin ependymal lamella. Several of the intraependymal neurons were shown to give rise to dendrites extending into the third ventricle. An additional population of nerve cells located in the deeper layers of the periventricular region also gained direct access to the cerebrospinal fluid by means of long dendrites terminating with a bulbous-like swelling in the third ventricle. This cerebrospinal fluid (CSF)-contacting dendrite branched off several times in a rectangular fashion to give rise to collaterals running in the subependymal or periventricular layers. The axons of these CSF-contacting neurons were followed into the magnocellular portion of the paraventricular nucleus. Small bipolar nerve cells with processes parallel to the surface of the third ventricle occupied a subependymal position. The isodendritic magnocellular neurons of the paraventricular nucleus emitted dendritic processes that reached the basal pole of the ependymal cells. The complex arrangement of the periventricular layer of the paraventricular nucleus might provide the structural basis for the mechanisms of cerebral osmoreception defined by means of physiological parameters. 相似文献
16.
Summary The posterior hypothalami of the polypteriform, Calamoichthys, and of the teleost, Anguilla, were studied by means of the Golgi technique. In Calamoichthys, the lateral lobes are not developed and the median lobe is simple. In Anguilla, the median (tuberal) lobe shows lophodendritic, CSF-contacting cells and horizontal cells in the periventricular grey and some reticular elements directed toward the cell-poor lateral areas. In the lateral lobes the periventricular grey is formed by multipolar neurons and a diffuse population of multipolar cells of uncertain identity. The nucleus diffusus lobi lateralis is formed by scarce multipolar neurons, often placed next to the external surface of the brain. The organization of the lateral lobes in Actinopterygii is reminiscent of highly developed integrative regions.Work performed under CNR Project Biology of Reproduction 相似文献
17.
Summary The co-localization of arginine vasopressin-and enkephalin-like immunoreactivities in nerve cells of the rat paraventricular hypothalamic nucleus and adjacent areas was investigated by the simultaneous application of immuno--galactosidase staining and the peroxidase-antiperoxidase method to sections. Arginine vasopressin-like immunoreactive cells were stained blue with immuno--galactosidase staining and enkephalin-like immunoreactive cells brown with the peroxidase-antiperoxidase method. Double-labeled cells with overlap of blue and brown immunoreaction products were identified in the anterior, medial, and lateral parvocellular parts of the paraventricular hypothalamic nucleus as well as in the previously indicated posterior magnocellular part. Other regions that contained double-labeled cells were the lateral hypothalamic area, anterior hypothalamic nucleus, area between the lateral hypothalamic area and anterior hypothalamic nucleus, suprachiasmatic nucleus, and bed nucleus of the stria terminalis, medial division, posterolateral part. These findings suggest that nerve cells with both arginine vasopressin- and enkephalin-like immunoreactivities may be more actively involved in neuroendocrine regulation and neural transmission than previously considered. They may provide a morphological basis for an increase in enkephalin-like immunoreactivity within the anterior pituitary in cases of hemorrhagic shock which is presumably accompanied by arginine vasopressin hypersecretion.Abbreviations
AH
anterior hypothalamic nucleus
-
ap
anterior parvocellular part of the paraventricular hypothalamic nucleus
-
BSTMPL
bed nucleus of the stria terminalis, medial division, posterolateral part
-
dp
dorsal parvocellular part of the paraventricular hypothalamic nucleus
-
f
fornix
-
LH
lateral hypothalamic area
-
lp
lateral paryocellular part of the paraventricular hypothalamic nuclcus
-
mp
medial parvocellular part of the paraventricular hypothalamic nucleus
-
MPA
medial preoptic area
-
pm
posterior magnocellular part of the paraventricular hypothalamic nucleus
-
pv
periventricular part of the paraventricular hypothalamic nucleus
-
SC
suprachiasmatic nucleus
-
Zi
zona incerta 相似文献
18.
T. S. Sotnichenko 《Neurophysiology》1982,14(2):137-143
After microinjections of horseradish peroxidase into the central tegmental area of the midbrain and centrum medianum thalami in cats, labeled neurons were found in the nucleus of the tractus solitarius, gracile and cuneate nuclei, spinal nuclei of the trigeminal nerve, the external nucleus and nucleus of the brachium of the inferior colliculus, the medial pretectal region, nucleus of the posterior commissure and stratum intermediale of the superior colliculus, and reticular structures of the medulla and pons. Comparison of the location of the sources of ascending afferent projections in the central tegmental area of the midbrain and centrum medianum thalami showed that the reticular formation receives mainly visceral projections through the nucleus of the tractus solitarius, whereas the centrum medianum thalami is innervated mainly by the system of sensory somatic nuclei.I. P. Pavlov Institute of Physiology, Academy of Sciences of the USSR, Leningrad. Translated from Neirofiziologiya, Vol. 14, No. 2, pp. 172–178, March–April, 1982. 相似文献
19.
Summary The colocalization of the peptides neuropeptide Y (NPY) and Phe-Met-Arg-Phe-NH2 (FMRFamide) in the brain of the Atlantic salmon was investigated with double immunofluorescence labeling and peroxidase-antiperoxidase immunocytochemical techniques. Colocalization of NPY-like and FMRE amide-like immunoreactivities was observed in neuronal cell bodies and fibers in four brain regions: in the lateral and commissural nuclei of the area ventralis telencephali, in the nucleus ventromedialis thalami, in the laminar nucleus of the mesencephalic tegmentum, and in a group of small neurons situated among the large catecholaminergic neurons in the isthmal region of the brainstem. All cell bodies in these nuclei were immunoreactive to both NPY and FMRF. We consistently observed larger numbers of FMRF-immunoreactive than NPY-immunoreactive fibers. In the nucleus ventromedialis thalami NPY- and FMRFamide-like immunoreactivities were colocalized in cerebrospinal fluid (CSF)-contacting neurons. NPY-immunoreactive, but not FMRF-immunoreactive, neurons were found in the stratum periventriculare of the optic tectum, and at the ventral border of the nucleus habenularis (adjacent to the nucleus dorsolateralis thalami). Neurons belonging to the nucleus of the nervus terminalis were FMRF-immunoreactive but not NPY-immunoreactive. The differential labeling indicates, as do our cross-absorption experiments, that the NPY and FMRFamide antisera recognize different epitopes. Thus, it is probable that NPY-like and FMRFamide-like substances occur in the same neurons in some brain regions. 相似文献
20.
In this study, we describe the distribution of high affinity binding sites for 1,25(OH)2-vitamin D3 (1,25-D3) in the zebra finch (Taeniopygia guttata). Four hours following the injection of tritiated 1,25-D3, binding of the steroid hormone was found primarily in the cell nuclei of a variety of differnt organs. Neurons in numerous discrete regions of the forebrain were labeled. These forebrain regions included the nucleus accumbens, nucleus dorsomedialis posterior thalami, lobus parolfactorius, nucleus septalis lateralis and medialis, nucleus septalis, lamina medullaris dorsalis, nucleus striae terminalis, palaeostriatum augmentatum, and stratum griseum. The choroid plexuses, however, remained clear. Labeled cells were seen in several organs of the alimentary canal, in both the exocrine and the endocrine pancreas, in the proximal tubules of the kidney, in the spleen, in the bursa of Fabricius, and in the heart. The basal cells of the uropygial gland were also labeled. No specific retention was evident in the gonads of either sex. Vitamin D is thus bound by cells in systems with widely different functions. Since several of the labeled tissues are not primarily involved in calcium homeostasis, the data support the concept that vitamin D-soltriol is a steroid hormone that acts as a seasonal neuroendocrine-endocrine regulator and somatotrophic modulator. 相似文献