Summary
The leptomeningeal tissue of the choroid plexuses and of the brain surfaces have been studied by means of the freeze-etching technique. The pia-arachnoid membrane and the subdural neurothel represent the morphological barrier between the extracerebral tissue and the cerebrospinal compartment. The freeze-etch findings indicate that the arachnoid and neurothelial cells are coupled by extensive zonulae occludentes which seem to represent the structural basis of the barrier mechanism provided by these cell layers. Furthermore, it became evident that gap junctions of considerable structural heterogeneity occur on the pial and arachnoid cells of the interstitial choroidal compartment and of the free brain surfaces. The structural heterogeneity of the nexuses is taken as an indication of the plasticity of the leptomeningeal tissue. The different morphological characteristics of the nexal formations are discussed with respect to their probable functional meaning.
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Ames, A., Sakanoue, M., Endo S.: Na, K, Ca and Cl concentrations in choroid plexus fluid and cisternal fluid compared with plasma ultrafiltrate. J. Neurophysiol. 27, 672–681 (1964)
Andres, K.H.: Über die Feinstruktur der Arachnoidea und Dura mater von Mammalia. Z. Zellforsch. 79, 272–295 (1967)
Barr, L., Berger, W., Dewey, M.M.: Electrical transmission at the nexus between smooth muscle cells. J. Gen. Physiol. 51, 347–367 (1968)
Brightman, M.W.: The intracerebral movement of proteins injected into blood and cerebrospinal fluid. Progr. Brain Res. 29, 19–40 (1968)
Brightman, M.W., Reese, T.S.: Junctions between intimately apposed cell membranes in the vertebrate brain. J. Cell Biol. 40, 648–677 (1969)
Claude, Ph., Goodenough, D.A.: The ultrastructure of the zonula occludens in tight and leaky epithelia. J. Cell Biol. 55, 46a (1973)
Davson, H.: The blood-brain barrier. In: The structure and function of nervous tissue (ed. G.H. Bourne) Vol. IV, p. 321–446. New York-London: Academic Press 1972
Davson, H., Segal, M.B.: The effects of some inhibitors and accelerators of sodium transport on the turnover of 22Na in the cerebrospinal fluid and the brain. J. Physiol. 209, 131–153 (1970)
Decker, R.S., Friend, D.S.: Assembly of gap junctions during amphibian neurulation. J. Cell Biol. 62, 32–47 (1974)
Dempsey, E.W., Wislocki, G.B.: An electron microscope study of the blood-brain barrier in the rat, employing silver nitrate as a vital stain. J. biophys. biochem. Cytol. 1, 245–256 (1955)
Dermietzel, R.: Junctions in the central nervous system of the cat. III. Gap junctions and membrane-associated orthogonal particle complexes (MOPC) in astrocytic membranes. Cell Tiss. Res. 149, 121–135 (1974a)
Dermietzel, R.: Freeze-etch studies of the membranes of the Pacinian corpuscle. Symposium on Mechanoreception, p. 99–107 (ed. J. Schwartzkopff) Opladen: Westdeutscher Verlag 1974b
Dermietzel, R.: Junctions in the central nervous system of the cat. IV. Interendothelial junctions of cerebral blood vessels from selected areas of the brain. Cell Tiss. Res. 164, 45–62 (1975)
Dermietzel, R., Schünke, D.: A complex junctional system in endothelial and connective tissue cells of the choroid plexus. Amer. J. Anat. 143, 131–136 (1975)
Dewey, M.M., Barr, L.: Intercellular connections between smooth muscle cells: the nexus. Science, 137, 670–672 (1962)
Diamond, J.M., Wright, E.M.: Biological membranes: The physical basis of ion and non-electrolyte selectivity. Ann. Rev. Physiol. 31, 581–646 (1969)
Dohrmann, G.J.: The choroid plexus: a historical review. Brain Res. 18, 197–218 (1970)
Dreifuss, J.J., Giradier, L., Forssmann, W.G.: Etude de la propagation de l'exitation dans le ventricle de rat on moyen de solutions hypertoniques. Pflügers Arch. ges. Physiol. 292, 13 (1966)
Findlay, J.W.: The choroid plexuses of the lateral ventricles of the brain, their histology, normal and pathological (in relation specially to insanity). Brain, 22, 161–202 (1899)
Friend, D.S., Gilula, N.B.: Variations in tight and gap junctions in mammalian tissues. J. Cell Biol. 53, 758–776 (1972)
Frömter, E., Diamond, J.: Route of passive ion permeation in epithelia. Nature New Biol. 235, 9–14 (1972)
Goldmann, E.: Vitalfärbung am Zentralnervensystem. Beitrag zur Physio-Pathologie des Plexus chorioideus und der Hirnhäute. Abh. kgl. preuß. Akad. Wiss. physik.-med. Kl., Nr. 1, 1–60 (1913)
Hand, A.R., Gobel, St.: The structural organization of the septate and gap junctions of hydra. J. Cell Biol. 52, 397–408 (1972)
Harvey, S.C., Burr, H.S.: The development of the meninges. Arch. Neurol. Psych. 15, 545–567 (1926)
Harvey, S.C., Burr, H.S., van Campenhout, E.: Development of the meninges. Further experiments. Arch. Neurol. Psych. 29, 683–690 (1933)
Hüttner, J., Boutet, M., More, R.H.: Gap junctions in arterial endothelium. J. Cell Biol. 57, 247–252 (1973)
Huxley, A.F., Stämpfli, R.: Effect of potassium and sodium ions on the electrical activity of the giant axon of the squid. J. Physiol. 112, 496–508 (1951)
Johnson, R.G., Preus, D.: Gap junction formation in a reaggregating system: An ultrastructural study. J. Cell Biol. 59, 158a (1973)
Imamura, S.: Beiträge zur Histologie des Plexus chorioideus der Menschen. Arb. Neur. Inst. Wien, 7–8, 272 (1900)
Krnjevic, K.: Some observations on the perfused frog sciatic nerves. J. Physiol. 123, 338–356 (1954)
Lehmann, G., Meesmann, A.: Über das Bestehen eines Donnangleichgewichtes zwischen Blut und Kammerwasser bzw. Liquor cerebrospinalis. Pflügers Arch. ges. Physiol. 205, 210–232 (1924)
Lehmann, H.J.: The epineurium as a diffusion barrier. Nature 172, 1045 (1953)
Lehmann, H.J.: Über Struktur und Funktion der perineuralen Diffusionsbarrieren. Z. Zellforsch. 46, 232–241 (1957)
Loeschcke, H.H.: Über Bestandspotentiale im Gebiet der medulla oblongata. Pflügers Arch. ges. Physiol. 262, 517–531 (1956)
Loeschcke, H.H.: DC potentials between CSF and blood. In: Ion homeostasis of the brain, p. 77–96 (eds. Siesjö, B.K., Sørensen, S.C.) Alfred Benzon Symposium III. Munsgaard: Copenhagen 1971
Loeschcke, H.H., Sugioka, K.: pH of cerebrospinal fluid in the cisterna magna and on the surface of the choroid plexus of the 4th ventricle, and its effect on ventilation in experimental disturbances of acid base balance. Transients, and steady states. Pflügers Arch. ges. Physiol. 312, 161–188 (1969)
Loewenstein, W.R.: Permeability of membrane junctions. Ann. N.Y. Acad. Sci. 137, 441–472 (1966)
Maxwell, D.S., Pease, D.C.: The electron microscopy of the choroid plexus. J. biophys. biochem. Cytol. 2, 467–474 (1956)
McNutt, N.S., Weinstein, R.S.: The ultrastructure of the nexus. A correlated thin-section and freeze-cleaved study. J. Cell Biol. 47, 666–688 (1970)
Moor, H., Mühlethaler, K.: Fine structure in frozen-etched yeast cells. J. Cell Biol. 17, 609–628 (1963)
Mottschall, H.J., Loeschcke, H.H.: Das transmeningeale Potential der Katze bei Änderungen des CO2-Druckes und der H+ -Ionenkonzentration. Pflügers Arch. ges. Physiol. 277, 662–670 (1963)
Nelson, E., Blinzinger, K., Hager, H.: Electron microscopic observations on subarachnoid and perivascular spaces of the Syrian hamster brain. Neurology 11, 285–295 (1961)
Nicely, M.: Measurement of the potential difference across the connective tissue sheath of frog sciatic nerve. Experientia 11, 199 (1955)
Nichol, J., Girling, F., Jerrad, W., Claxton, E.B., Burton, A.C.: Fundamental instability of the small blood vessels and critical closing pressures in vascular beds. Amer. J. Physiol. 164, 330–344 (1951)
Pappas, G.D., Bennett, M.V.: Specialized junctions involved in electrical transmission between neurons. Ann. N.Y. Acad. Sci. 137, 495–508 (1966)
Pease, D.C., Schultz, R.L.: Electron microscopy of rat cranial meninges. Amer. J. Anat. 102, 301–321 (1958)
Pinto da Silva, P., Gilula, N.B.: Gap junctions in normal and transformed fibroblasts in culture. Exp. Cell Res. 71, 393–401 (1972)
Pitelka, D.R., Hamamoto, S.T., Duafala, J.G., Nemanic, M.K.: Cell contacts in the mouse mammary gland. I. Normal gland in postnatal development and secretory cycle. J. Cell Biol. 56, 707–818 (1973)
Pricam, C., Humbert, F., Perrelet, A., Orci, L.: Gap junctions in mesangial and lacis cells. J. Cell Biol. 63, 349–354 (1974)
Revel, J.P., Karnovsky, M.J.: Hexagonal array of subunits in intercellular junctions of the mouse heart and liver. J. Cell Biol. 33, C 7, (1967)
Reynolds, E.S.: The use of lead citrate at high pH as an electron-opaque stain in electron microscopy. J. Cell Biol. 17, 208–212 (1963)
Rhodin, J.A.: An atlas of ultrastructure. Philadelphia: Saunders 1963
Robertson, J.D., Bodenheimer, P.S., Stage, D.E.: The ultrastructure of Mauthner cell synapses and nodes in goldfish brains. J. Cell Biol. 19, 159–199 (1963)
Schaltenbrand, G.: Plexus und Meningen. In: Handbuch der mikroskopischen Anatomie des Menschen, IV/2, 1–139. Berlin-Göttingen-Heidelberg: Springer 1955
Shanthaveerappa, P.R., Bourne, G.H.: A perineural epithelium. J. Cell Biol. 14, 343–346 (1962a)
Shanthaveerappa, P.R., Bourne, G.H.: The “perineural epithelium”, a metabolically active, continuous, protoplasmic cell barrier surrounding peripheral nerve fasciculi. J. Anat. 96, 527–537 (1962b)
Shanthaveerappa, P.R., Hope, J., Bourne, G.H.: Electron microscopic demonstration of the perineural epithelium in rat peripheral nerve. Acta anat. 52, 193–201 (1963)
Shanthaveerappa, P.R., Bourne, G.H.: A sample method for preparation and staining of the whole Pacinian corpuscle. Acta anat. 60, 199–206 (1965)
Spatz, H.: Versuche zur Nutzbarmachung der E. Goldmannschen Vitalfarbstoffversuche für die Pathologie des Zentralnervensystems. Allg. Z. Psychiatr. 80, 285–288 (1925)
Spatz, H.: Die Bedeutung der vitalen Färbung für die Lehre vom Stoffaustausch zwischen dem Zentralnervensystem und dem übrigen Körper. Arch. Psychiatr. 101, 267–358 (1934)
Spurr, A.R.: A low-viscosity epoxy resin embedding medium for electron microscopy. J. Ultrastruc. Res. 26, 31–43 (1969)
Staehelin, L.A.: Three types of gap junctions interconnecting intestinal epithelial cells visualized by freeze-etching. Proc. Nat. Acad. Sci. 69, 1318–1321 (1972)
Staehelin, L.A., Mukherjee, P.M., Williams, A.W.: Freeze-etch appearance of the tight junctions in the epithelium of small and large intestine of mice. Protoplasma 67, 165–184 (1969)
Stämpfli, R.: Bau und Funktion isolierter markhaltiger Nervenfasern. Erg. Physiol. 47, 70–165 (1952)
Voetmann, E.: On the structure and surface area of the human choroid plexuses. A quantitive anatomical study. Acta anat. 8, Suppl. 10, 1–116 (1949)
Waggener, J.D., Beggs, J.: The membrane coverings of neural tissues: an electron microscopy study. J. Neuropathol. 26, 412–426 (1967)
Welch, K., Sadler, K.: Electrical potentials of choroid plexus of the rabbit. J. Neurosurg. 22, 344–351 (1965)
Wislocki, G.B., Leduc, E.H.: Vital staining of the hematoencephalic barrier by silver nitrate and trypan blue, and cytological comparisons of the neurohypophysis, pineal body, area postrema, intercolumnar tubercle, and supraoptic crest. J. comp. Neurol. 96, 371–414 (1952)
Wright, E.M.: Ion transport across the frog posterior choroid plexus. Brain Res. 23, 302–304 (1970)
Yee, A.G.: Gap junctions between hepatocytes in regenerating rat liver. J. Cell Biol. 55, 294a (1972) (Abstract).
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This investigation was supported by the Deutsche Forschungsgemeinschaft SFB 114 (Bionach).
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Dermietzel, R. Junctions in the central nervous system of the cat. Cell Tissue Res. 164, 309–329 (1975). https://doi.org/10.1007/BF00223012
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DOI: https://doi.org/10.1007/BF00223012