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Wevers RA, Engelke U, Wendel U, de Jong JG, Gabreëls FJ, Heerschap A. Standardized method for high-resolution 1H-NMR of cerebrospinal fluid. Clin Chem 1995; 41:744-51. [PMID: 7729054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This study describes a standardized method for recording single-pulse 1H-nuclear magnetic resonance (1H-NMR) spectra from cerebrospinal fluid (CSF). Quantitative data for alanine, valine, threonine, and lactic acid correlated well with data obtained with conventional techniques. The pH of the samples is important for the reproducibility of the chemical shift of resonances, and should be standardized to improve recognition and assignment of resonances. A database of resonances from various metabolites is presented. Fifty compounds could be identified in CSF, 15 of which had not been observed earlier in NMR studies of CSF. We describe for the first time in the literature, to our knowledge, 3-hydroxyisovaleric acid as a regular component of many CSF samples. As examples of the diagnostic power of the technique, spectra are shown of CSF from patients with three different inborn errors of metabolism. We found high concentrations of N-acetylaspartic acid, citric acid, and succinic acid in CSF from a patient with Canavan disease. This is indirect evidence for the existence of a carrier mechanism that is shared by these di- and tricarboxylic acids.
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Hageman AT, Gabreëls FJ, de Jong JG, Gabreëls-Festen AA, van den Berg CJ, van Oost BA, Wevers RA. Clinical symptoms of adult metachromatic leukodystrophy and arylsulfatase A pseudodeficiency. ARCHIVES OF NEUROLOGY 1995; 52:408-13. [PMID: 7710377 DOI: 10.1001/archneur.1995.00540280098023] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To determine the clinical symptoms in adult metachromatic leukodystrophy and in adult pseudodeficiency for arylsulfatase A. DESIGN Case series. SETTING University hospital. PATIENTS Twenty-five adult patients with very low arylsulfatase A activity. RESULTS In 13 patients, a diagnosis of adult metachromatic leukodystrophy was made. The main symptoms were dementia, behavioral abnormalities, ataxia, and polyneuropathy. In 12 patients, a diagnosis of arylsulfatase A pseudodeficiency was made. No characteristic clinical syndrome could be detected in these patients. CONCLUSIONS Adult metachromatic leukodystrophy is a progressive metabolic disease with symptoms of demyelination of the central and peripheral nervous systems. Diagnosis must be confirmed by determination of arylsulfatase A activity and accumulation of sulfatides. Pseudodeficiency for arylsulfatase A can be confirmed or excluded by means of DNA analysis.
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Leenders RG, de Jong JG, Wevers RA. Extraction and purification of gangliosides from plasma and fibroblasts before analysis by thin layer chromatography. Ann Clin Biochem 1995; 32 ( Pt 1):68-73. [PMID: 7762953 DOI: 10.1177/000456329503200106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A procedure to extract and purify gangliosides from small volumes of plasma (0.6 mL), cerebrospinal fluid (1 mL) and fibroblasts is described. Gangliosides were extracted with chloroform/methanol and purified by means of reversed phase chromatography and gel filtration before analysis by thin layer chromatography. The procedure proved to be useful in confirming deficiency of lysosomal enzyme activity affecting ganglioside breakdown. The new procedure also appeared to be useful to monitor ganglioside catabolism in cultured fibroblasts loaded with ganglioside.
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Peelen GO, de Jong JG, Wevers RA. HPLC analysis of oligosaccharides in urine from oligosaccharidosis patients. Clin Chem 1994; 40:914-21. [PMID: 8087986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Analysis of urinary oligosaccharides by thin-layer chromatography (TLC) is used as screening procedure for 10 different lysosomal diseases. We tested the usefulness of HPLC in screening, using a CarboPac PA1 column (Dionex), pulsed amperometric detection (PAD), and post-column derivatization (PCD). Patterns from six types of oligosaccharidoses were compared with normal urinary patterns and with the TLC patterns. PAD appeared to be nonspecific and therefore is applicable only to desalted urine samples. PCD was more specific and applicable to nondesalted urine samples, albeit with a lower resolving power. Peaks in urines from oligosaccharidoses patients were identified on the basis of retention times of commercially available oligosaccharides or TLC bands after isolation and HPLC of the corresponding oligosaccharides. Abnormal oligosaccharide peaks were seen in urines from patients with alpha-mannosidosis, GM1-gangliosidosis (juvenile), GM2-gangliosidosis (Sandhoff disease), Pompe disease, and beta-mannosidosis. HPLC detected no abnormal oligosaccharides in urine from patients with fucosidosis. Although TLC is a simple and reliable screening procedure for detecting classical lysosomal diseases with oligosaccharide excretion, HPLC, by its higher resolution and possibility of quantification, can more generally be used for recognition of abnormal oligosaccharides or detection of increased excretion or content for known oligosaccharides in urine, other body fluids, and cells.
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Peelen GO, de Jong JG, Wevers RA. HPLC analysis of oligosaccharides in urine from oligosaccharidosis patients. Clin Chem 1994. [DOI: 10.1093/clinchem/40.6.914] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Analysis of urinary oligosaccharides by thin-layer chromatography (TLC) is used as screening procedure for 10 different lysosomal diseases. We tested the usefulness of HPLC in screening, using a CarboPac PA1 column (Dionex), pulsed amperometric detection (PAD), and post-column derivatization (PCD). Patterns from six types of oligosaccharidoses were compared with normal urinary patterns and with the TLC patterns. PAD appeared to be nonspecific and therefore is applicable only to desalted urine samples. PCD was more specific and applicable to nondesalted urine samples, albeit with a lower resolving power. Peaks in urines from oligosaccharidoses patients were identified on the basis of retention times of commercially available oligosaccharides or TLC bands after isolation and HPLC of the corresponding oligosaccharides. Abnormal oligosaccharide peaks were seen in urines from patients with alpha-mannosidosis, GM1-gangliosidosis (juvenile), GM2-gangliosidosis (Sandhoff disease), Pompe disease, and beta-mannosidosis. HPLC detected no abnormal oligosaccharides in urine from patients with fucosidosis. Although TLC is a simple and reliable screening procedure for detecting classical lysosomal diseases with oligosaccharide excretion, HPLC, by its higher resolution and possibility of quantification, can more generally be used for recognition of abnormal oligosaccharides or detection of increased excretion or content for known oligosaccharides in urine, other body fluids, and cells.
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de Jong JG, Heijs WM, Wevers RA. Mucopolysaccharidoses screening: dimethylmethylene blue versus alcian blue. Ann Clin Biochem 1994; 31 ( Pt 3):267-71. [PMID: 8067668 DOI: 10.1177/000456329403100309] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The dimethylmethylene blue (DMB)-based screening procedure for mucopolysaccharidosis and the alcian blue (AB)-based procedure both measure glycosaminoglycan (GAG) content directly in urine. We compared the two procedures. Absorbance per microgram of GAG for DMB was 25 times that obtained with AB, resulting in a requirement for 10 times smaller sample volumes for the former. Recoveries of added heparan sulphate for the AB assay in the absence and presence of added protein (2.5 g/L) were comparable (78-95% and 75-111%), as was the case with the DMB assay. Here, recoveries were generally better (94-103% and 96-100%). The coefficient of correlation (CC) between the two methods measured on 86 reference urine samples was 0.861. For mucopolysaccharidosis urines the CC was higher (0.928). Age-dependent reference values were comparable. Performance of the assays was compared by measurement of GAG content in 24 mucopolysaccharidosis urines. Standard deviation scores (measured value minus mean of reference values divided by standard deviation in reference values) and probabilities for classification in the patient group were calculated and compared. Especially for urines from patients with less distinctly increased GAG content (Sanfilippo, Scheie), scores and probabilities were higher with the DMB assay.
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Ploos van Amstel JK, Jansen RP, de Jong JG, Hamel BC, Wevers RA. Six novel mutations in the alpha-galactosidase A gene in families with Fabry disease. Hum Mol Genet 1994; 3:503-5. [PMID: 8012363 DOI: 10.1093/hmg/3.3.503] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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de Jong JG, Wevers RA, Liebrand-van Sambeek R. Measuring Urinary Glycosaminoglycans in the Presence of Protein: An Improved Screening Procedure for Mucopolysaccharidoses Based on Dimethylmethylene Blue. Clin Chem 1992. [DOI: 10.1093/clinchem/38.6.803] [Citation(s) in RCA: 114] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Earlier we described a simple and reliable screening procedure in urine for mucopolysaccharidoses based on the color reaction of glycosaminoglycans (GAGs) with dimethylmethylene blue. At physiological concentrations of urinary protein, we observed an obvious interference by protein in the assay. By modifying the assay, we abolished the protein interference. The modified procedure is not disturbed by human serum albumin, IgG (both tested with as much as 5 g/L of protein), or urinary proteins. The modified procedure appeared as reliable as the original. No false-negative results were found in a series of 26 urine samples from patients with mucopolysaccharidoses (sensitivity 100%). In a series of 405 urine samples offered for metabolic screening, 24 samples with increased GAG content and normal GAG composition were seen (specificity 94%). The method may also be applicable for determining GAG in other body fluids or solutions containing protein.
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de Jong JG, Wevers RA, Liebrand-van Sambeek R. Measuring urinary glycosaminoglycans in the presence of protein: an improved screening procedure for mucopolysaccharidoses based on dimethylmethylene blue. Clin Chem 1992; 38:803-7. [PMID: 1597005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Earlier we described a simple and reliable screening procedure in urine for mucopolysaccharidoses based on the color reaction of glycosaminoglycans (GAGs) with dimethylmethylene blue. At physiological concentrations of urinary protein, we observed an obvious interference by protein in the assay. By modifying the assay, we abolished the protein interference. The modified procedure is not disturbed by human serum albumin, IgG (both tested with as much as 5 g/L of protein), or urinary proteins. The modified procedure appeared as reliable as the original. No false-negative results were found in a series of 26 urine samples from patients with mucopolysaccharidoses (sensitivity 100%). In a series of 405 urine samples offered for metabolic screening, 24 samples with increased GAG content and normal GAG composition were seen (specificity 94%). The method may also be applicable for determining GAG in other body fluids or solutions containing protein.
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Peelen GO, de Jong JG, Wevers RA. High-performance liquid chromatography of monosaccharides and oligosaccharides in a complex biological matrix. Anal Biochem 1991; 198:334-41. [PMID: 1799219 DOI: 10.1016/0003-2697(91)90435-v] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Analysis of oligosaccharides in complex biological matrices is hampered by the fact that oligosaccharides, closely related in structure, are difficult to separate from each other and that conventional detection procedures (refraction index and uv detection) are not specific enough for carbohydrates. Prepurification of samples by procedures like desalting or gel filtration is often used but can lead to the loss of specific oligosaccharides. We have used pellicular anion chromatography in combination with a postcolumn reaction for reducing carbohydrates based on 4-aminobenzoylhydrazide. This procedure not only detected normal mono- and oligosaccharides but N-acetylhexosamines and reducing N-acetylhexosamine containing oligosaccharides as well. A sensitivity of about 20-25 pmol for non-GlcNAc containing mono- or oligosaccharides and between 30-50 pmol for GlcNAc or oligosaccharides with GlcNAc at the reducing side was reached. The postcolumn detection was compared with pulsed amperometric detection and appeared to be more specific for mono- and oligosaccharides. Except for deproteination to protect the column, no further sample preparation was needed with this system for our application (urines). In this way pellicular anion chromatography in combination with this postcolumn reaction reaction to be a sensitive and specific HPLC procedure for analysis of monosaccharides and oligosaccharides in complex biological matrices.
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de Jong JG, Hasselman JJ, van Landeghem AA, Vader HL, Wevers RA. The spot test is not a reliable screening procedure for mucopolysaccharidoses. Clin Chem 1991; 37:572-5. [PMID: 1901775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
To check the reliability of the Ames MPS paper spot test, which is based on the Azure A dye, we sent a series of urine samples to three laboratories where the spot test is part of the metabolic screening for mucopolysaccharidoses. In these laboratories false-negative results ranged between 19% and 35% and false-positive results ranged between 12% and 29% of all samples submitted. In contrast, the quantitative dimethylmethylene blue test (Clin Chem 1989;35:1472-7) detected an increased glycosaminoglycan content in all urine samples from mucopolysaccharidosis patients and gave no false-positive results. In the latter procedure, glycosaminoglycan content is expressed per millimole of creatinine, and age-dependent reference values are used. We conclude that the Ames spot test and other spot tests are unreliable as a screening procedure for mucopolysaccharidoses and should not be used to screen for these diseases.
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de Jong JG, Wevers RA, Laarakkers C, Poorthuis BJ. Dimethylmethylene blue-based spectrophotometry of glycosaminoglycans in untreated urine: a rapid screening procedure for mucopolysaccharidoses. Clin Chem 1989. [DOI: 10.1093/clinchem/35.7.1472] [Citation(s) in RCA: 166] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Glycosaminoglycans (GAGs) are measured in urine to screen for mucopolysaccharidoses. Other assay procedures are only qualitative (spot tests), can give false-negative results (spot tests, turbidity tests), or are relatively laborious (uronic acid-carbazole test). The present spectrophotometric procedure, based on the color reaction with dimethylmethylene blue (DMB), can be performed directly on untimed urine samples without prior precipitation. Reference values were age dependent. We tested urines of 27 patients with various mucopolysaccharidoses and compared results by three other procedures (cetylpyridinium chloride turbidity tests at pH 4.8 and at pH 7.0, and the uronic acid-carbazole test). In the DMB assay, GAGs were increased in 26 of the 27 patients. The exception was a Morquio A patient, whose activity of the defective enzyme was higher than in classical Morquio patients. Uronic acid, measured in precipitated GAG by the carbazole test, was increased in 23 of the 25 patients so tested. In the turbidity test at pH 7.0, values were increased in 24 of the 27 patients. In contrast, with the citrate-buffered (pH 4.8) turbidity measurement, GAG content was increased in only 19 of the 27 patients. This rapid and easy DMB method is a reliable screening procedure for mucopolysaccharidoses and compares well with procedures used hitherto.
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de Jong JG, Wevers RA, Laarakkers C, Poorthuis BJ. Dimethylmethylene blue-based spectrophotometry of glycosaminoglycans in untreated urine: a rapid screening procedure for mucopolysaccharidoses. Clin Chem 1989; 35:1472-7. [PMID: 2503262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Glycosaminoglycans (GAGs) are measured in urine to screen for mucopolysaccharidoses. Other assay procedures are only qualitative (spot tests), can give false-negative results (spot tests, turbidity tests), or are relatively laborious (uronic acid-carbazole test). The present spectrophotometric procedure, based on the color reaction with dimethylmethylene blue (DMB), can be performed directly on untimed urine samples without prior precipitation. Reference values were age dependent. We tested urines of 27 patients with various mucopolysaccharidoses and compared results by three other procedures (cetylpyridinium chloride turbidity tests at pH 4.8 and at pH 7.0, and the uronic acid-carbazole test). In the DMB assay, GAGs were increased in 26 of the 27 patients. The exception was a Morquio A patient, whose activity of the defective enzyme was higher than in classical Morquio patients. Uronic acid, measured in precipitated GAG by the carbazole test, was increased in 23 of the 25 patients so tested. In the turbidity test at pH 7.0, values were increased in 24 of the 27 patients. In contrast, with the citrate-buffered (pH 4.8) turbidity measurement, GAG content was increased in only 19 of the 27 patients. This rapid and easy DMB method is a reliable screening procedure for mucopolysaccharidoses and compares well with procedures used hitherto.
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Aarsman AJ, de Jong JG, Arnoldussen E, Neys FW, van Wassenaar PD, Van den Bosch H. Immunoaffinity purification, partial sequence, and subcellular localization of rat liver phospholipase A2. J Biol Chem 1989; 264:10008-14. [PMID: 2722857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Monoclonal antibodies against rat liver mitochondrial phospholipase A2 were used to develop a rapid immunoaffinity chromatography for enzyme purification. The purified enzyme showed a single band upon sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The sequence of the N-terminal 24 amino acids was determined. This part of the sequence showed only 25% homology with that of rat pancreatic phospholipase A2 but was 96% identical to that of rat platelet and rat spleen membrane-associated phospholipase A2. These enzymes are distinguished from pancreatic phospholipases A2 by the absence of Cys-11. In rat liver phospholipase A2 activity has been reported in various subcellular fractions. All of these require Ca2+ and have a pH optimum in the alkaline region, but little is known about the structural relationship and quantitative distribution of these enzymes. We have investigated these points after solubilization of the phospholipase A2 activity from total homogenates and crude subcellular fractions by extraction with 1 M potassium chloride. Essentially all of the homogenate activity could be solubilized by this procedure indicating that the enzymes occurred in soluble or peripherally membrane-associated form. Gel filtration and immunological cross-reactivity studies indicated that phospholipases A2 solubilized from membrane fractions shared a common epitope with the mitochondrial enzyme. The quantitative distribution of the immunopurified enzyme activity among subcellular fractions followed closely that of the mitochondrial marker cytochrome c oxidase. Rat liver cytosol contained additional Ca2+-dependent and -independent phospholipase activities.
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de Jong JG, Amesz H, Aarsman AJ, Lenting HB, van den Bosch H. Monoclonal antibodies against an intracellular phospholipase A2 from rat liver and their cross-reactivity with other phospholipases A2. EUROPEAN JOURNAL OF BIOCHEMISTRY 1987; 164:129-35. [PMID: 3830178 DOI: 10.1111/j.1432-1033.1987.tb11003.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The membrane-associated phospholipase A2 from rat liver mitochondria was solubilized and partially purified by AcA 54 gel filtration and Matrex gel blue A chromatography. The approximately 2500-fold purified preparation was injected into mice to prepare monoclonal antibodies against phospholipase A2 after fusion of spleen cells and mouse SP2/0 myeloma cells. Hybridoma supernatants were assayed for antibody production in enzyme-linked immunosorbent assay with partially purified phospholipase A2 as antigen. Positive clones were tested for their ability to bind phospholipase A2 in a specific immunoprecipitation assay involving protein-A--Sepharose to which rabbit anti-(mouse immunoglobulins) and monoclonal antibodies from hybridoma supernatants were complexed. Twelve clones producing antibodies that bound mitochondrial phospholipase A2 were identified. The binding of all of these antibodies to protein fractions eluted from AcA 54 and Matrex gel blue A columns coincided with the phospholipase A2 activity in these fractions. All monoclonal antibodies showed cross-reactivity with rat liver cytosolic and solubilized rat platelet phospholipase A2. Extracellular phospholipase A2 from rat and pig pancreas or Crotalus atrox were not recognized by the anti-(mitochondrial phospholipase A2) antibodies.
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de Jong JG, Dekker AW, Kapteijn R, Sixma JJ. Two-dimensional membrane protein patterns of myeloid cells, at various stages of differentiation. Leuk Res 1986; 10:291-302. [PMID: 3456478 DOI: 10.1016/0145-2126(86)90026-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In order to detect differentiation linked and leukemia associated surface proteins, two-dimensional polyacrylamide gel electrophoresis patterns after lactoperoxidase labelling were made from normal promyelocyte enriched cell preparations, immature and mature myeloid cells, peripheral blood granulocytes and cells from patients with acute myeloid leukemia. Three proteins were found to be more expressed in the patterns of promyelocyte enriched cell preparations. These proteins were also seen with leukemic myeloblasts and are therefore associated with immature myeloid cells. Five surface proteins were expressed preferentially on mature myeloid cells, but not or only weakly on promyelocyte enriched preparations and absent in leukemic myeloblasts. Seven surface proteins were present at all stages of maturation and also on leukemic myeloblasts. Three surface proteins were found only in leukemic myeloblasts; these could be associated with an early stage of maturation or specifically linked with leukemia.
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de Jong JG, Dekker AW, van Kessel KP, Sixma JJ. Recognition of a granulocyte-specific membrane protein by monoclonal antibodies. Leuk Res 1986; 10:437-43. [PMID: 3515054 DOI: 10.1016/0145-2126(86)90074-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Using membranes isolated from leukemic myeloblasts as immunogen, two granulocyte specific monoclonal antibodies 38D2 and 41D2 were developed. The antibodies are positive in membrane immunofluorescence with granulocytes and bands; they give no reaction with monocytes, platelets, leukemic myeloblasts, lymphoblasts, myeloid cell lines, and immature myeloid cells from bone marrow. Both monoclonal antibodies precipitate the same membrane glycoprotein (MW: 70-78 kd, pI: 6-7), which corresponds to a membrane glycoprotein characteristic for granulocytes, as concluded from two-dimensional polyacrylamide gelelectrophoresis patterns obtained from surface labelled myeloid cells. The monoclonal antibodies did not influence the granulocyte functions tested: phagocytosis of opsonized bacteria, chemiluminiscence after stimulation with various stimuli, and chemotaxis.
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de Jong JG, Dekker AW, Kapteijn R, Sixma JJ. Two-dimensional membrane protein patterns of acute myeloid leukemia cells and mature myeloid cells after various ectolabeling procedures. Blood 1984; 64:110-22. [PMID: 6329377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Surface exposed membrane proteins of malignant cells may offer important clues about the differentiation stage of the cell or may contain proteins specific for the malignant state. We have studied the surface exposed membrane proteins of human acute myeloid leukemia cells employing the lactoperoxidase, periodate, or the neuraminidase/galactose oxidase ectolabeling procedures. One-dimensional membrane protein patterns were prepared from 20 patients, and from 19 patients, two-dimensional patterns were prepared according to O'Farrell. No consistent differences in membrane proteins could be found between patients classified as M1, M2, M4, or M5 (FAB classification). A diagram of membrane proteins from acute myeloid leukemia cells subjected to two-dimensional electrophoresis could be composed from the results obtained. About 25 different membrane proteins can be indicated. Two-dimensional patterns, after the various ectolabeling procedures, were also prepared from mature myeloid cells, visualizing about 18 different membrane proteins. Comparison of these and the undifferentiated myeloid leukemia cell pattern reveals some maturation-linked or leukemia-associated differences. The most relevant proteins will be discussed, along with their association with a recently described "malignancy marker" with a molecular weight of 68,000 daltons.
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Lamberts SW, Klijn GM, de Jong JG, Birkenhäger JC. The recovery of the hypothalamo-pituitary-adrenal axis after transsphenoidal operation in three patients with Cushing's disease. The effect of prior external pituitary irradiation. ACTA ENDOCRINOLOGICA 1981; 98:580-5. [PMID: 6272518 DOI: 10.1530/acta.0.0980580] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Abstract.
The recovery of the hypothalamo-pituitary-adrenal axis after selective transsphenoidal adenomectomy was studied in 3 patients with Cushing's disease by measuring basal plasma ACTH and cortisol concentrations, cortisol secretion rate, the diurnal rhythm of cortisol, and the reaction of cortisol to lysine vasopressin (LVP), of compound S to metyrapone and of cortisol and growth hormone to an insulin-induced hypoglycaemia. The third patient had been treated previously by external pituitary irradiation. In 2 patients basal plasma ACTH levels returned within normal values before plasma cortisol, but no supra-physiological plasma concentrations of ACTH were seen as has been observed after withdrawal of exogenous glucocorticoids. With regard to the different stimulation tests: at first the normal reaction of plasma cortisol to LVP returned after 3 months, at the same time as the restoration of growth hormone secretion in response to hypoglycaemia. A normalization of the reaction to metyrapone was seen thereafter while finally the reaction of cortisol to an insulin-induced hypoglycaemia and the diurnal rhythm of plasma cortisol returned 15 to 18 months after operation in the first patient and after 12 months in the second patient. Selective adenomectomy had also been carried out in the third patient, as evidenced by normal TSH, LH and FSH secretion. Hypocortisolism, and a deficient ACTH and growth hormone secretion in response to the stimuli mentioned, however, did not normalize up till 22 months after operation. The restoration of the hypothalamo-pituitary-adrenal axis after selective pituitary adenomectomy in Cushing's disease was prevented in this patient by prior external pituitary irradiation.
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de Jong PT, de Jong JG, de Jong-Ten Doeschate JM, Delleman JW. Olivopontocerebellar atrophy with visual disturbances. An ophthalmologic investigation into four generations. Ophthalmology 1980; 87:793-804. [PMID: 7443212 DOI: 10.1016/s0161-6420(80)35160-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Fifty-one members of four generations of a family with autosomal dominant olivopontocerebellar atrophy with decreased visual acuity were examined by an ophthalmologist and a neurologist. Twenty-two persons were affected ophthalmologically and 27 were affected neurologically. We describe the ophthalmologic findings as well as the case history of our youngest patient (age 11 months) from whom we obtained brain tissue and an ophthalmopathologic report at autopsy.
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de Jong JG, Dekker AW, Overduin P, Sixma JJ. Cell fractionation and isolation of plasma membrane enriched fractions of normal granulocytes and leukemic myeloblasts. Leuk Res 1979; 3:425-34. [PMID: 297179 DOI: 10.1016/0145-2126(79)90039-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Westerhof W, Beemer FA, Cormane RH, Delleman JW, Faber WR, de Jong JG, van der Schaar WW. Hereditary congenital hypopigmented and hyperpigmented macules. ARCHIVES OF DERMATOLOGY 1978; 114:931-6. [PMID: 666331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Congenital hypomelanotic and hypermelanotic macules traced in three generations of a family suggested autosomal dominant inheritance. Some affected membbers also showed retarded growth and mental deficiency. Light microscopic findings of "splitdopa" preparations of lesional and normal skin were comparable, except that background staining of keratinocytes in dark macules was higher than in control skin. In light macules it was lower. Ultrastructurally, hypomelanotic skin showed small melanosomes (0.3 mu) that occurred in keratinocytes in melanosome complexes. Hypermelanotic skin revealed large melanosomes (0.6 mu) that were singly distributed in keratinocytes. Melanosome size in normal skin averaged 0.4 mu; distribution pattern was mixed. Melanin granules inside keratinocytes were fully melanized. Hyperpigmented, normal and hypopigmented skin of one person had histological features of black oriental and white skin. This clinical picture could well represent a new neurocutaneous syndrome different from tuberous sclerosis.
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de Jong JG, Delleman JW, Houben M, Manschot WA, de Minjer A, Mol J, Slooff JL. Agenesis of the corpus callosum, infantile spasms, ocular anomalies (Aicardi's syndrome). Clinical and pathologic findings. Neurology 1976; 26:1152-8. [PMID: 825791 DOI: 10.1212/wnl.26.12.1152] [Citation(s) in RCA: 75] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
A patient with Aicardi's syndrome had the complete clinical picture of mental subnormality, convulsions, electroencephalographic disturbances, ocular anomalies, female sex, and agenesis of the corpus callosum. A second patient had the features of the syndrome, with microphthalmia and one patient had the features of the syndrome, with microphthalmia and one depigmented zone. In both cases and in Brihaye's case, no pineal gland was found. Since the epiphysis cerebri is important as a clock for sexual development, its absence may be incompatible with the development of a male fetus. The pathogenesis of the syndrome remains obscure. While an exogenous cause may be at work in some of the cases, the complex and stereotypical character of the symptoms plead for a hereditary origin.
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