Analyse d’une projection et réalisation « automatique » d’une carte politique mondiale à petite échelle

in G.E.O. (1984), 16(2), 43-59

Une mesure simple des flexions et de l'extension lombaires. Ses valeurs normales et son intérêt pour l'expertise médicale

in Journal de Médecine Légale, Droit Médical (1984), 27(4), 333-346

Antimitotic activity of strychnopentamine, a bisindolic alkaloid

in Journal of Ethnopharmacology (1984), 12

Strychnopentamine has been tested for its cytotoxicity and antitumor activities and compared with two other bisindolic alkaloids that possess an usambarane skeleton. The presence of a N-methylpyrrolidine ... [more ▼]

Strychnopentamine has been tested for its cytotoxicity and antitumor activities and compared with two other bisindolic alkaloids that possess an usambarane skeleton. The presence of a N-methylpyrrolidine group increases the antimitotic activity of this type of alkaloids. [less ▲]

Anti-laminin antibodies in Sprague-Dawley and brown Norway rats chronically exposed to cadmium.

in Toxicology (1984), 31(3-4), 307-13

Sprague-Dawley and Brown-Norway female rats were chronically exposed to cadmium. The metal was administered either in drinking water at a concentration of 20 or 100 ppm for 13 months or intraperitoneally ... [more ▼]

Sprague-Dawley and Brown-Norway female rats were chronically exposed to cadmium. The metal was administered either in drinking water at a concentration of 20 or 100 ppm for 13 months or intraperitoneally (i.p.) at the dose of 1 mg/kg, 5 times a week for 4 months. Anti-laminin and anti-type IV procollagen antibodies (laminin and type IV procollagen are components of the glomerular basement membranes) were sequentially assessed by radioimmunoassay in serial serum samples. Anti-type IV procollagen antibodies were never detectable whereas anti-laminin antibodies were transiently found in the serum of Sprague-Dawley rats only. In the i.p. group, the antibodies were detected between week 4 and 8, whereas in the oral treatment group, they were detected between month 6 and 8. At the same time, the concentration of cadmium in kidney cortex averaged about 100 ppm in the 20 ppm cadmium group and about 200 ppm in the 2 other treatment groups. The pathogenic significance of these antibodies in chronic cadmium intoxication of Sprague-Dawley rats remains to be assessed since their occurrence was not associated with concomitant immunoglobulin deposits in the kidneys. [less ▲]

Isolation and characterization of the human prolactin gene

in EMBO Journal (1984), 3(2), 429-37

Prolactin (PRL) and growth hormone (GH) genes derive from a common ancestor and still share some sequence homologies. Their expression in the pituitary gland is regulated in opposite directions by most of ... [more ▼]

Prolactin (PRL) and growth hormone (GH) genes derive from a common ancestor and still share some sequence homologies. Their expression in the pituitary gland is regulated in opposite directions by most of the many hormones acting on them. This provides an interesting system to study sequences involved in gene expression. Using a human PRL cDNA clone as a probe, we screened a human genomic DNA library in lambda phage and isolated a single recombinant comprising the whole hPRL gene. It was characterized by restriction endonuclease mapping and cDNA hybridization, by DNA heteroduplex analysis and by nucleotide sequencing. The hPRL gene is present as a single copy per haploid genome, is approximately 10 kb long and contains four introns, three of which interrupt the coding sequence at the same locations as in the known GH and PRL genes. The origin of transcription was determined by S1 mapping on prolactinoma mRNAs. The search for direct and inverted repeats, as well as dyad symmetries was carried out in the 900-bp sequenced in the 5'-flanking region. Sequence homologies between hPRL, hGH and rPRL were derived from computer drawn matrices for these upstream regions. [less ▲]

Cerebrospinal fluid neurophysins in affective illness and schizophrenia

in European Archives of Psychiatry and Neurological Sciences (1984), 234

Extracellular Matrix in Testicular Differentiation

in Annals of the New York Academy of Sciences (1984), 438

Localization of type I, III, IV collagen and fibronectin in benign tumors and epitheliomas of the human breast

in Journal de Gynécologie, Obstétrique et Biologie de la Reproduction (1984), 13(1), 35-40

Fibronectin and types I, III and IV collagens were localized by an indirect immunofluorescence technique in 10 fibro-adenomas and 27 mammary adenocarcinomas. In the benign lesions, a densification of a ... [more ▼]

Fibronectin and types I, III and IV collagens were localized by an indirect immunofluorescence technique in 10 fibro-adenomas and 27 mammary adenocarcinomas. In the benign lesions, a densification of a type III collagen meshwork was noted around galactophoric channels. In carcinomas, various patterns of connective tissue proteins distributions were observed depending upon the histological types of lesions. Connective tissue proteins are restricted to the perivascular areas in mucinous carcinomas. Type III collagen is largely distributed in the stroma of poorly differentiated tumors. In differentiated carcinomas, discontinuous linear deposits of type IV collagen or fibronectin are localized at the border of epithelial proliferations. They probably represent the remmants of epithelial basement membrane. In intra- canalar adenocarcinomas, type IV collagen and fibronectin form irregular and discontinuous depositifs . These finding indicate that extensive connective tissue remodelling is observed during neoplastic infiltration. The type of stroma and connective tissue proteins distributed in these epithelial proliferations depends primarily upon the histological type of malignant infiltrating carcinomas. [less ▲]

Le virus de la rhinotracheite infectieuse bovine (bovine herpesvirus 1): aspects biochimiques.

in Annales de Recherches Vétérinaires = Annals of Veterinary Research (1984), 15(4), 455-65

The biochemical characteristics of infectious bovine rhinotracheitis virus (Bovine herpes-virus 1, BHV 1) are reviewed: description of the virion particle and virus purification, analysis of structural ... [more ▼]

The biochemical characteristics of infectious bovine rhinotracheitis virus (Bovine herpes-virus 1, BHV 1) are reviewed: description of the virion particle and virus purification, analysis of structural and non structural proteins, nucleic acid properties, restriction endonuclease analysis of the viral DNA. The authors emphasize the biochemical methods able to insure a better understanding of the molecular epidemiology of BHV 1 and of its latency; also to develop biochemical weapons against the infection. [less ▲]

Thérapeutique étiologique des maladies d'origine virale.

in Annales de Recherches Vétérinaires = Annals of Veterinary Research (1984), 15(1), 35-54

Stabilisation des sols à la chaux. Action de la chaux vive sur la bentonite et sur la kaolinite.

in Bulletin des Recherches Agronomiques de Gembloux (1984), 19(1-2), 81-110

Sound attenuation by wide barriers on the ground

in Acustica (1984), 55(5), 293-300

Attenuation of the inhibitory effect of binedaline and desipramine on the firing rate of locus coeruleus neurons after chronic administration : time-course study

in Archives Internationales de Physiologie, de Biochimie et de Biophysique (1984), 92

Shape optimal-design using B-splines

in Computer Methods in Applied Mechanics & Engineering (1984), 44(3), 247-267

Shape optimal design of an elastic structure is formulated using a design element technique. It is shown that Bezier and B-spline curves, typical of the CAD philosophy, are well suited to the definition ... [more ▼]

Shape optimal design of an elastic structure is formulated using a design element technique. It is shown that Bezier and B-spline curves, typical of the CAD philosophy, are well suited to the definition of design elements. Complex geometries can be described in a very compact way by a small set of design variables and a few design elements. Because of the B-splines flexibility, it is no longer necessary to piece design elements together in order to agree with the shape complexity, nor to restrict the shape variations. Moreover, the additional optimization constraints that are most often needed to avoid unrealistic designs when the shape variables are the nodal coordinates of a finite element mesh, are automatically taken into account in the new formulation. An analytical derivation of the sensitivity analysis will be established, giving rise to numerical efficiency. It will be seen that the resulting optimization problem does not involve highly nonlinear functions with respect to the shape variables, so that simple mathematical programming algorithms can be applied to solve it. Some numerical examples are offered to demonstrate the power and generality of the new approach presented in this paper. [less ▲]

Isolation of follicular dendritic cells from human tonsils and adenoids. II. Immunocytochemical characterization.

in European Journal of Immunology (1984), 14(3), 267-73

Follicular dendritic cells (FDC) are specialized cells found only within lymphoid follicles. They bind immune complexes and play a role in the presentation of antigen to follicular B cells and in the ... [more ▼]

Follicular dendritic cells (FDC) are specialized cells found only within lymphoid follicles. They bind immune complexes and play a role in the presentation of antigen to follicular B cells and in the generation of B cell memory. In the present report the isolation of FDC from human tonsils and adenoids is described. These isolated cells have an unusual spherical arrangement and enclose lymphocytes within extensions of their membranes. Their ultrastructural features are similar to those observed in situ. The reactivity of isolated FDC with a number of monoclonal antibodies was analyzed by immunofluorescence and by immunostaining (at the electron microscopic level) with colloidal gold. In keeping with the results of previous investigations on tissue sections IgM, IgG and IgA (but not IgD) can be detected on the surface of isolated FDC, as can C3b receptors and the FDC-associated antigen detected by monoclonal antibody R4/23. The immunoglobulins associated with FDC are mostly embedded in an electron-dense material. The majority of the lymphoid cells enclosed within the membrane extensions of FDC are of B cell type. These results suggest that isolated FDC may be suitable for further in vitro investigation of their role in the humoral immune response. [less ▲]

THE PROCESS E+ E- $\to$ Q ANTI-Q GAMMA AND THE ELECTRIC CHARGE OF COLORED QUARKS

in Physics Letters B (1984), 140

A rare complication of ophtalmic zona: spreading cerebral arteritis

in Acta Clinica Belgica (1984), 39(3), 159-162

Physiological and perceptual responses to cyclic heat stress variations

in Aviation, Space and Environmental Medicine (1984), 55(10), 935-40

The effect of the time presentation of a given external heat load was examined on five subjects exercising at a constant work load (50 W). The subjects, dressed in briefs, were exposed to cyclic ... [more ▼]

The effect of the time presentation of a given external heat load was examined on five subjects exercising at a constant work load (50 W). The subjects, dressed in briefs, were exposed to cyclic variations for 120 min in air temperatures between 51 degrees C and 23 degrees C, under three different schedules involving heat pulses of 10-min, 20-min and 30-min duration, respectively. The strain induced by each of these conditions was compared in terms of both physiological and perceptual criteria. Results showed that between conditions, there were significant differences in skin temperature levels but not in core temperature levels, body heat storage, or body weight loss. Perception of effort and thermal sensation ratings both exhibited similar changes in all three conditions. Due to the time constant of the sweating response, sweating rates and skin wettednesses at the end of the heat pulses were lower for 10-min heat pulses than for those of 20- and 30-min duration, and these differences were perceived by the subjects. Lower perceived skin wettedness ratings are thus suggested as the main factor to explain why all subjects rated the 10-min heating-cooling cycle as the least strenuous and uncomfortable condition. It is concluded that under the conditions of this study, perceptual criteria associated with physiological criteria represent a useful means of discriminating slight differences in strain. [less ▲]

The Dissociative Ionization of Nitrous Oxide. A comparison between Electroionization and HeI and NeI Photoionization.

in Chemical Physics Letters (1984), 111

The photoelectron spectrum of N2O and the kinetic energy distributions of NO+, N2+, O+ and N+ have been recorded with HeI and NeI resonance lines. At 21.22 eV the distributions are similar to those ... [more ▼]

The photoelectron spectrum of N2O and the kinetic energy distributions of NO+, N2+, O+ and N+ have been recorded with HeI and NeI resonance lines. At 21.22 eV the distributions are similar to those observed by electroionization at comparable energy. The NeI resonance line produces O+ and NO+ ions. Their respective kinetic energy distributions are related to the change induced in the N2O+(A2Sigma+) photoelectron band excited by the NeI resonance line. [less ▲]

Les leucémies - Chronique interuniversitaire

in Louvain Medical (1984), 103

Owing to the polychemotherapy treatments the proportion of long-term survivors in adult acute leukemia achieving a complete remission id of about 15 to 30%. this percentage attains 50% in childhood ... [more ▼]

Owing to the polychemotherapy treatments the proportion of long-term survivors in adult acute leukemia achieving a complete remission id of about 15 to 30%. this percentage attains 50% in childhood lymphoblastic leukemia. Some long-term survivors may be considered as cured. The chemotherapy of chronic leukemias is disappointing. Because of our limited conventional therapeutic means the allogenic bone marrow transplantation is now indicated in the following instances : the acute myeloid leukemia in first remission, the acute lymphoblastic leukemia (ALL) in second remission or in first remission of poor-risk ALL, and the chronic myeloid leukemia during the chronic phase. [less ▲]

Nouvelles technologies

in Education et Sociétés : Revue Internationale de Sociologie de l'Education (1984), 20

Une complication rare du zona ophtalmique : l'artérite cérébrale de propagation

in Acta Clinica Belgica (1984), 39

We are reporting the case of a 55-year-old man with stage II chronic lymphoid leukemia, complicated by Herpes zoster ophtalmicus with controlateral hemiplegia. This hemiplegia has been interpreted as the ... [more ▼]

We are reporting the case of a 55-year-old man with stage II chronic lymphoid leukemia, complicated by Herpes zoster ophtalmicus with controlateral hemiplegia. This hemiplegia has been interpreted as the consequence of a granulomatous angiitis. Anti-viral drugs should be useful in the treatment of these cases. [less ▲]

Hasselbachtal, the section best displaying the Devonian-Carboniferous Boundary beds in the Rhenish Massif (Rheinisches Schifergebirge).

in Courier Forschungsinstitut Senckenberg (1984), 67

Immunohistochemical characterization of the basement membranes of the human oral mucosa.

in Archives of Oral Biology (1984), 29(5), 363-8

Type IV and V collagens, laminin and heparan sulphate proteoglycan were localized in vascular and subepithelial basement membranes. Fibronectin was distributed in a reticular pattern throughout the lamina ... [more ▼]

Type IV and V collagens, laminin and heparan sulphate proteoglycan were localized in vascular and subepithelial basement membranes. Fibronectin was distributed in a reticular pattern throughout the lamina propria under the oral epithelium. The uniform distribution of basement membrane components and type V collagen in different regions suggests a similar molecular composition for the basement membranes under functionally-different oral epithelia. The more intense reaction in the vascular than in the subepithelial basement membranes, with diluted antibodies to type IV collagen and laminin apparently reflects chemical differences in these basement membranes. Occasional discontinuities in the subepithelial basement membranes were seen in inflamed gingival sulci and in tonsillar crypts. The destruction responsible affected all basement membrane components, except fibronectin, which maintained a reticular distribution even in the deep tonsillar tissue. The immunohistochemical method is useful in demonstrating different degrees of destruction in basement membranes associated with inflammation. [less ▲]

Variabilité spatiale et possibilité d'extrapolation des extrêmes quotidiens de la température dans une région à relief accidenté. Le cas du sud-est de la Belgique

in Bulletin de la Société Géographique de Liège (1984), 20

Bacterial wall peptidoglycan, DD-peptidases and beta-lactam antibiotics

in Scandinavian Journal of Infectious Diseases (1984), 42

Wall peptidoglycan expansion in bacteria rests upon a cytoplasmic D-Ala: D-Ala ligase (ADP) which catalyses synthesis of a D-Ala-D-Ala dipeptide (with accompanying hydrolysis of one molecule of ATP) and a ... [more ▼]

Wall peptidoglycan expansion in bacteria rests upon a cytoplasmic D-Ala: D-Ala ligase (ADP) which catalyses synthesis of a D-Ala-D-Ala dipeptide (with accompanying hydrolysis of one molecule of ATP) and a set of DD-peptidases which utilize this D-Ala-D-Ala dipeptide--once it has been translocated at the outer face of the plasma membrane as the C-terminal portion of a disaccharide peptide unit--as carbonyl donor for transpeptidation and carboxypeptidation reactions (without additional energy expenditure). Four DD-peptidases have been selected which differ from each other with respect to the effects that amino compounds exert on the fate and rate of consumption of a D-Ala-D-Ala terminated amide carbonyl donor analogue. They serve as models to understand the different mechanisms by which the DD-peptidases perform catalysis and show widely varying responses to the action of beta-lactams, from extreme sensitivity to very high resistance. [less ▲]

Interim results on the clinical effects of i.v. administered thymopentin in active rheumatoid arthritis

in International Journal of Clinical Pharmacology, Therapy and Toxicology (1984), 4(6), 451-457

Forty-one patients with active rheumatoid arthritis entered a controlled, double-blind, randomized study; 21 received prolonged i.v. injections (10 min) of thymopentin 50 mg 3 times a week for 3 ... [more ▼]

Forty-one patients with active rheumatoid arthritis entered a controlled, double-blind, randomized study; 21 received prolonged i.v. injections (10 min) of thymopentin 50 mg 3 times a week for 3 consecutive weeks; the other 20 received placebo under the same conditions. The groups were comparable at the start of the study. Statistical tests of changes within the treatment groups after 3 weeks showed that the improvement achieved in the thymopentin group was significant (p less than 0.05 or p less than 0.01) for each clinical parameter, except for left-hand grip strength. On the other hand, no significant improvement was observed for any parameter except morning stiffness in the patients on placebo. The intergroup comparison showed significant differences, favouring thymopentin over placebo treatment, in the Ritchie index, scores for swollen joints, assessment of severity of pain and scores for changes in the activity of the disease. Only minor side-effects were experienced in the two treatment groups. The present placebo-controlled double-blind study confirms the previous positive results achieved in open studies, i.e., the beneficial therapeutic effect of prolonged i.v. injections of thymopentin in patients with severe rheumatoid arthritis observed after 3 weeks of therapy. The drug appears to be safe at the dose regimen used. [less ▲]

Spontaneous modification of the oxoglutarate translocator in vivo.

in European Journal of Biochemistry (1984), 142

Precise localization of antigens on follicular dendritic cells.

in Cell & Tissue Research (1984), 235(2), 267-74

Horse-spleen ferritin or bovine serum albumin conjugated to colloidal gold (BSA-gold) were injected subcutaneously in preimmunized mice. In draining lymph nodes both antigens were located in macrophages ... [more ▼]

Horse-spleen ferritin or bovine serum albumin conjugated to colloidal gold (BSA-gold) were injected subcutaneously in preimmunized mice. In draining lymph nodes both antigens were located in macrophages or between the cytoplasmic processes of follicular dendritic cells (FDC). Some of the antigens remained trapped on FDC until day 31 after injection. Simultaneous injection of both antigens showed that they were located between the infoldings of the same FDC. These cells are thus able to retain at least two different antigens on their surface. The peculiar arrangement of ferritin between the cytoplasmic infoldings suggests that this antigen is fixed on both cell membranes by specific antibodies. The trapped immune complexes could thus stabilize the FDC membrane system. The antigen retention requires the presence of specific antibodies since BSA-gold or ferritin injected without preimmunization were not found between FDC processes. Nonantigenic materials, such as colloidal gold or carbon particles, are not trapped by FDC, except when injected in large amounts. The antigens were trapped on the surface of FDC, however unfrequently in close contact with lymphocytes. FDC might protect lymphocytes against an excess of immune complexes and act as regulators of contacts between lymphocytes and immune complexes. [less ▲]

Les femmes et le langage

in Langage et l'Homme (Le) : Recherches Pluridisciplinaires sur le Langage (1984), 56

Mode de logement et exigences climatiques des porcelets en période de post-sevrage

in Annales de Médecine Vétérinaire (1984), 128

Evolution, en fonction de l'age et du sexe, de l'uree, de la creatinine et de la clairance de la creatinine.

in Archives Internationales de Physiologie et de Biochimie (1984), 92(3), 249-54

Serum urea and creatinine concentrations were determined in 150 healthy subjects. The formula of Cockcroft and Gault was used in order to calculate creatinine clearance. Such estimation of creatinine ... [more ▼]

Serum urea and creatinine concentrations were determined in 150 healthy subjects. The formula of Cockcroft and Gault was used in order to calculate creatinine clearance. Such estimation of creatinine clearance is widely used as a parameter for individualization of dosage of drugs secreted primary via the kidneys. The effects of age and sex were then assessed on serum urea, serum creatinine and on creatinine clearance. [less ▲]

Effect of homologous delayed hypersensitivity testing on specific and non-specific lymphoblastic transformation in cattle latently infected with bovine rhinotracheitis virus (bovine herpesvirus 1, BHV 1).

in Annales de Recherches Vétérinaires = Annals of Veterinary Research (1984), 15(4), 483-90

Two cattle latently infected with infectious bovine rhinotracheitis virus (Bovine herpesvirus 1, BHV 1) were intradermally injected with inactivated BHV 1 antigen (delayed hypersensitivity test, DHT, skin ... [more ▼]

Two cattle latently infected with infectious bovine rhinotracheitis virus (Bovine herpesvirus 1, BHV 1) were intradermally injected with inactivated BHV 1 antigen (delayed hypersensitivity test, DHT, skin test). Another animal, free of BHV 1 infection was similarly treated. Two latent carriers of the virus, intradermally injected with Phosphate-Buffered Saline solution were used as control. The evolution of spontaneous multiplication of lymphocytes and lymphoblastic transformation in vitro induced by three phytomitogens (con A, PHA, PWM) and BHV 1 antigen was followed in all animals. The delayed hypersensitivity test provoked an increase in spontaneous lymphocyte multiplication in latent carriers as well as an increase in mitogen- and antigen-induced blastogenesis on the 2nd and the 9th day following the treatment. A similar increase occurred on the 9th day in the BHV 1-free animal. Therefore, in latent carriers of BHV 1, delayed hypersensitivity testing induces an anamnestic lymphocyte reaction corresponding to the cutaneous one. This first lymphocyte activity is followed, one week later, by a new reaction which occurs both in infected and uninfected animals. [less ▲]

Specific risks of anesthesia in patients with osteoarticular disease

in Acta Anaesthesiologica Belgica (1984), 35(2), 105-121

Anesthesia in patients with either treated or untreated osteoarttcular disorders poses a number of specific problems. The authors deal with risks resulting from mechanical deformities produced by these ... [more ▼]

Anesthesia in patients with either treated or untreated osteoarttcular disorders poses a number of specific problems. The authors deal with risks resulting from mechanical deformities produced by these disorders, by the involvement of a large number of functional systems, by changes in the immune status of such patients and by alterations in the reactions of arthritic patients resulting from prior or concurrent treatments. The authors emphasise the crucial points which require evaluation and observation before and during anesthesia [less ▲]

How should we proceed when a myocardial infarction is suspected

in Acta Clinica Belgica (1984), 39(6), 393-5

Note relative à l'histoire de la lecture wallonne au XVIIIe siècle

in Livre et l'estampe (Le) (1984), 30

Light-driven reversible transformation of chlorophyllide P696,684 into chlorophyllide P688,678 in illuminated etiolated bean leaves

in Photobiochemistry and Photobiology (1984), 8

Les processus contrôlant l'évolution du tracé d'une rivière ardennaise. Zeitschrift für Geomorphologie

in Zeitschrift für Geomorphologie (1984)

Expression of different regional patterns of fibronectin immunoreactivity during mesoblast formation in the chick blastoderm

in Developmental Biology (1984), 101(2), 373-381

The appearance and distribution of the extracellular material glycoprotein, fibronectin, was investigated in gastrulating chick embryos using affinity-purified anti-human plasma fibronectin antibodies ... [more ▼]

The appearance and distribution of the extracellular material glycoprotein, fibronectin, was investigated in gastrulating chick embryos using affinity-purified anti-human plasma fibronectin antibodies. Preservation of tissue structure and immunoreactivity was carried out by ethanol/acetic acid fixation or by formaldehyde/glutaraldehyde fixation. Using the former fixation method, fibronectin immunoreactivity was detected (1) at the ventral surface of the upper layer or epiblast, mainly anterior and lateral to Hensen's node, in regions where middle-layer or mesoblast cells are not yet present, and (2) sparsely in extracellular spaces of the deep layer. Using the latter fixation method, fibronectin immunoreactivity was, moreover, found at the entire ventral surface of the upper layer, i.e., also at the epithelial-mesenchymal interface, where a basement membrane was previously described. At the light microscope level, we could not detect significant immunoreactivity in the middle layer. Treatment of sections of ethanol-fixed blastoderms with testicular hyaluronidase before immunostaining for fibronectin partially demasked the antigenic sites of this glycoprotein at the epithelial-mesenchymal interface. The present report indicates that the different regional patterns of fibronectin immunoreactivity in the basement membrane of the upper layer are spatially and temporally correlated with migration and positioning of mesoblast cells. These regional patterns are probably due to differences in the composition of fibronectin-associated material such as chondroitin sulfate A and/or C proteoglycans, and/or hyaluronate, before and after mesoblast expansion, rather than to differences in the distribution of fibronectin itself. In this respect, it is noteworthy that the chemical composition of the basement membrane of an epithelium changes as mesenchyme cells migrate over it. The results also favor the idea that fibronectin is a structural component of the whole basement membrane which is used as a substrate for migration of mesenchymal cells. [less ▲]

Distribution of different collagen types and fibronectin in neurofibromatosis tumours.

in Acta Pathologica, Microbiologica, et Immunologica Scandinavica. Section A-Pathology (1984), 92(5), 345-52

Collagen types I, III, IV and V and fibronectin were localized in neurofibromas from six patients with von Recklinghausen's neurofibromatosis (NF) using indirect immunofluorescence (IIF) and peroxidase ... [more ▼]

Collagen types I, III, IV and V and fibronectin were localized in neurofibromas from six patients with von Recklinghausen's neurofibromatosis (NF) using indirect immunofluorescence (IIF) and peroxidase anti-peroxidase (PAP) techniques. Type I and III collagens were abundantly and rather evenly present in the tumours and formed a continuous network, but were absent from the capillary endothelial walls and were sparse in the perineurium of the occasional nerve fascicles. The type III/type I + type III collagen ratio in neurofibromas varied from 17.4% to 37.3% when estimated with cyanogen bromide peptide analysis. Fibronectin was detected in areas where type I and III collagens were present but was most intensively stained in the vascular walls and perineurium. Type IV collagen was detected at the dermo-epidermal junction of the skin overlying the tumours, in the endothelial cells of the capillaries, the perineurium and endoneurium. Furthermore, in the tumourous stroma there was plenty of type IV collagen appearing as a discontinuous patchy pattern suggesting abundant basement membrane material associated with cells forming the tumours. Type V collagen distribution was very similar to that of type IV collagen. [less ▲]

COMPARATIVE-STUDY OF DIFFERENT BAMBOO PULPS

in Holzforschung : International Journal of the Biology, Chemistry, Physics, & Technology of Wood (1984), 38(5), 281-288

Influence de paramètres non infectieux et plus particulièrement du confort thermique sur la viabilité et la vitalité des porcelets en maternité

in Annales de Médecine Vétérinaire (1984), 128

Architecture du Proche Orient ancien et histoire de l'architecture

in Art&Fact (1984)

Microgéographie et évolution industrielle de la Wallonie

in Revue Belge de Géographie (1984), (108-2), 93-113

This article aims to show microgeography's contribution to the analysis of industrial space in Wallonia. As far as we are concerned its contribution is twofold: in the first instance it helps to ... [more ▼]

This article aims to show microgeography's contribution to the analysis of industrial space in Wallonia. As far as we are concerned its contribution is twofold: in the first instance it helps to understand the reason for the different localisations and, secondly, it brings to the fore and explains the transformations in distribution. Furthermore, this work also makes it possible to carry out very detailed surveys on the scale of a commune, a town-district or even a road. When collating the existing research on Wallonia one is, inevitably, led to liken this region to other European economic entities industrialised in the 19th Century. Indeed, one finds simi-litaries such as the co-existence of old sites and new localisations as well as the presence of many abandoned sites. In addition one can bring to the fore processes which exist elsewhere, namely disindustrialisation of towns, exurbanisation of activities and new attempts ol reintegrate industry into urban environment. [less ▲]

Caractéristiques culturelles de la population scolaire et curriculum réalisé dans quatre classes maternelles

in Scientia Paedagogica Experimentalis (1984), 31(1), 20-44

Enseignant et enseignement assisté par ordinateur

in Cahiers de Clio (1984), 80

Agranulocytose médicamenteuse

in Médecine et Hygiène (1984), 42

L'agranulocytose médicamenteuse se caractérise par une diminution sévère et sélective des polynucléaires neutrophiles dans le sang circulant. C'est la réaction médicamenteuse conduisant le plus souvent à ... [more ▼]

L'agranulocytose médicamenteuse se caractérise par une diminution sévère et sélective des polynucléaires neutrophiles dans le sang circulant. C'est la réaction médicamenteuse conduisant le plus souvent à une issue fatale. Les drogues les plus souvent incriminées sont le pyramidon ou le dipyrone, les sulfamidés, les antithyroïdiens, les phénothiazines, la phénylbutazone et ses dérivés. La vitesse d'installation de la granulocytopénie varie selon le mode d'action de la drogue. Dans les agranulocytoses d'origine immunologique, une prise unique du médicament chez un sujet déjà sensibilisé peut aboutir à la disparition pratiqueement totale des granulocytes dans le sang circulant en l'espace de 6 à 10 heures. A la différence del'anémie aplastique sévère, l'agranulocytose est en principe réversible en l'espace d'une à trois semaines. Son traitement implique l'arrêt immédiat de la drogue, l'hospitalisation en milieu spécialisé, l'administration rapide d'une association d'antibiotiques bactéricides aux doses maximales, et l'isolement en chambre propre ou stérile. L'indication de transfusions de granulocytes doit être discutée. [less ▲]

Les principales causes de mortalité des jeunes bovins en race Bleu Blanc

in Vlaams Diergeneeskundig Tijdschrift (1984), 53

Etude de la texture des nodules océaniques en vue de leur utilisation comme catalyseurs

in Revue Roumaine de Chimie (1984), 29

Study of the Zn-containing DD-carboxypeptidase of Streptomyces albus G by small-angle X-ray scattering in solution.

in European Journal of Biochemistry (1984), 138(1), 83-87

Study of the Zn2+-containing D-alanyl-D-alanine-cleaving carboxypeptidase of Streptomyces albus G by small-angle X-ray scattering in solution yielded the following molecular parameters: radius of gyration ... [more ▼]

Study of the Zn2+-containing D-alanyl-D-alanine-cleaving carboxypeptidase of Streptomyces albus G by small-angle X-ray scattering in solution yielded the following molecular parameters: radius of gyration R = 1.82 +/- 0.05 nm; largest diameter D = 5.9 +/- 0.2 nm; relative molecular mass Mr = 17000 +/- 2000; volume V approximately equal to 35 +/- 2 nm3; degree of hydration: 0.25 +/- 0.02 g water/g protein. By reference to theoretical scattering curves of rigid triaxial homogeneous bodies, a model which fits all experimental data is an elliptical cylinder. Such a model is compatible with that observed in the crystal structure. At those high concentrations necessary to form inactive enzyme-ligand associations the non-competitive beta-lactam inhibitors, cephalothin and cephalosporin C, drastically altered the scattering behaviour of the protein. [less ▲]