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Prognostic model of hepatocellular carcinoma based on cancer grade. World J Clin Cases 2023; 11:6383-6397. [PMID: 37900243 PMCID: PMC10600993 DOI: 10.12998/wjcc.v11.i27.6383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/02/2023] [Accepted: 08/23/2023] [Indexed: 09/20/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer. With highly invasive biological characteristics and a lack of obvious clinical manifestations, HCC usually has a poor prognosis and ranks fourth in cancer mortality. The aetiology and exact molecular mechanism of primary HCC are still unclear. AIM To select the characteristic genes that are significantly associated with the prognosis of HCC patients and construct a prognosis model of this malignancy. METHODS By comparing the gene expression levels of patients with different cancer grades of HCC, we screened out differentially expressed genes associated with tumour grade. By protein-protein interaction (PPI) network analysis, we obtained the top 2 PPI networks and hub genes from these differentially expressed genes. By using least absolute shrinkage and selection operator Cox regression, 13 prognostic genes were selected for feature extraction, and a prognostic risk model of HCC was established. RESULTS The model had significant prognostic ability in HCC. We also analysed the biological functions of these prognostic genes. CONCLUSION By comparing the gene profiles of patients with different stages of HCC, We have constructed a prognosis model consisting of 13 genes that have important prognostic value. This model has good application value and can be explained clinically.
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Trends and determinants of place of death among Chinese lymphoma patients: a population-based study from 2013-2021. Am J Cancer Res 2023; 13:4246-4258. [PMID: 37818048 PMCID: PMC10560945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 06/26/2023] [Indexed: 10/12/2023] Open
Abstract
Limited research exists on factors influencing the place of death (POD) or hospital deaths among lymphoma patients in China, despite the country's significant burden of lymphoid neoplasms. This study aimed to describe the distribution of POD among lymphoma patients and identify the factors associated with hospital lymphoma deaths to provide evidence for developing targeted healthcare policies. Data in this study were obtained from the National Mortality Surveillance System (NMSS). The distribution of POD among individuals who died from lymphoma was analyzed, and factors influencing the choice of dying in the hospital were examined. Chi-square test was employed to analyze the differences in characteristic distributions. Multilevel logistic regression analysis was identify the relationship between hospital deaths due to lymphoma and individual factors, as well as socioeconomic contextual variables. During 2013-2021, there were 66772 lymphoma deaths reported by the NMSS, including 44327 patients (66.39%) who died at home and 21211 (31.77%) died in the hospital. Female patients, those had a higher level of educational attainment, retired individuals, those died of non-Hodgkin lymphoma, residents of urban areas, patients between the ages of 0 and 14, and unmarried individuals had a higher probability of dying in hospitals. Improving health care providers' understanding of palliative care for cancer patients and prioritizing accessible services are essential to enhance the quality of end-of-life care. These approaches ensure the equitable allocation of healthcare resources and provide diverse options for minorities with specific preferences regarding end-of-life care.
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The prognostic value of cancer stage-associated genes in clear cell renal cell carcinoma. Am J Transl Res 2023; 15:5145-5158. [PMID: 37692936 PMCID: PMC10492068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 08/01/2023] [Indexed: 09/12/2023]
Abstract
OBJECTIVES Clear cell renal cell carcinoma (ccRCC) is a highly prevalent subtype of malignant renal tumor, but unfortunately, the survival rate remains unsatisfactory. The aim of the present study is to explore genomic features that are correlated with cancer stage, allowing for the identification of subgroups of ccRCC patients with high risk of unfavorable outcomes and enabling prompt intervention and treatment. METHODS We compared the gene expression levels across ccRCC patients with diverse cancer stages from The Cancer Genome Atlas (TCGA) database, which revealed characteristic genes associated with tumor stage. We then extracted prognostic genes and used least absolute shrinkage selection operator (LASSO) regression to select four genes for feature extraction and the construction of a prognostic risk model. RESULTS We have identified a total of 171 differentially expressed genes (DEGs) that are closely linked to the tumor stage of ccRCC through difference analysis. A prognostic risk model constructed based on the expression levels of ZIC2, TFAP2A-AS1, ITPKA, and SLC16A12 holds significant prognostic value in ccRCC. The results of the functional enrichment analysis imply that the DEGs are mainly involved in the regulation of immune-related signaling pathways, and therefore may have a significant function in immune system regulation of ccRCC. CONCLUSIONS Our study has successfully identified significant DEGs between high- and low-staging groups of ccRCC using bioinformatics methods. The construction of a prognostic risk model based on the expression levels of ZIC2, TFAP2A-AS1, ITPKA, and SLC16A12 has displayed promising prognostic significance, indicating its valuable potential for clinical application.
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Relapsed/refractory classical Hodgkin lymphoma effectively treated with low-dose decitabine plus tislelizumab: A case report. World J Clin Cases 2021; 9:6041-6048. [PMID: 34368325 PMCID: PMC8316945 DOI: 10.12998/wjcc.v9.i21.6041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/17/2021] [Accepted: 05/24/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Academic studies have proved that anti-programmed death-1 (PD-1) monoclonal antibodies demonstrated remarkable activity in relapsed/refractory classical Hodgkin lymphoma (cHL). However, most patients ultimately experienced failure or resistance. It is urgent and necessary to develop a novel strategy for relapsed/refractory cHL. The aim of this case report is to evaluate the combination approach of low-dose decitabine plus a PD-1 inhibitor in relapsed/ refractory cHL patients with prior PD-1 inhibitor exposure.
CASE SUMMARY The patient was a 27-year-old man who complained of enlarged right-sided cervical lymph nodes and progressive pain aggravation of the right shoulder over the past 3 mo before admission. Histological analysis of lymph node biopsy was suggestive of cHL. The patient experienced failure of eight lines of therapy, including multiple cycles of chemotherapy, PD-1 blockade, and anti-CD47 antibody therapy. Contrast-enhanced CT showed that the tumors of the chest and abdomen significantly shrunk or disappeared after three cycles of treatment with decitabine plus tislelizumab. The patient had been followed for 11.5 mo until March 2, 2021, and no progressive enlargement of the tumor was observed.
CONCLUSION The strategy of combining low-dose decitabine with tislelizumab could reverse the resistance to PD-1 inhibitors in patients with heavily pretreated relapsed/ refractory cHL. The therapeutic effect of this strategy needs to be further assessed.
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[Predictive value of NT-proBNP on admission on left ventricular ejection fraction and in-patients major adverse cardiac and cerebrovascular events in hospitalized patients with unstable angina]. ZHONGHUA XIN XUE GUAN BING ZA ZHI 2019; 47:117-122. [PMID: 30818939 DOI: 10.3760/cma.j.issn.0253-3758.2019.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the predictive value of N-terminal pro-B-type natriuretic peptide (NT-proBNP) on admission on left ventricular ejection fraction (LVEF) and the in-hospital major adverse cardiac and cerebrovascular events (MACCE) in hospitalized patients with unstable angina (UA). Methods: Data of 2 972 consecutive hospitalized patients with UA in Beijing Friendship Hospital from January 2013 to September 2017 were retrospective analyzed. Patients were divided into 4 groups according to the level of NT-proBNP on admission: 733 cases with NT-proBNP lower than 61 ng/L, 749 cases with NT-proBNP between 61 and 133 ng/L, 747 cases with NT-proBNP between 133 and 326 ng/L, and 743 cases with NT-proBNP higher than 326 ng/L. LVEF and in-hospital MACCE were compared among 4 groups and the predictive value of NT-proBNP on admission on LVEF and in-hospital MACCE was determined by multiple logistical regression analysis. Results: LVEF value became lower with increasing on admission NT-proBNP value ((68.4±4.8)%, (68.2±5.2)%, (67.2±6.7)% and (62.6±10.4)%, F=77.98, P<0.01), while in-hospital MACCE was higher with increasing on admission NT-proBNP value (3.4% (25/733), 3.5% (26/749), 5.5% (41/747) and 7.3% (54/743), χ(2)=16.23, P<0.01) in NT-proBNP lower than 61 ng/L, NT-proBNP between 61 and 133 ng/L, NT-proBNP between 133 and 326 ng/L, and NT-proBNP higher than 326 ng/L group. Multiple logistic regression analysis showed that on admission NT-proBNP was an independent predictor for LVEF<50% (Exp(β)=5.875, 95%CI 3.382-10.207, P<0.001), but not predictor for in-hospital MACCE (Exp(β)=0.783, 95%CI 0.400-1.996, P=0.783). Conclusion: The on admission NT-proBNP level is an independent predictor of left ventricular systolic dysfunction (LVEF<50%), but not an independent predictor of total in-hospital MACCE in hospitalized patients with UA.
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Progressive Nonfluent Aphasia: Language, Cognitive, and PET Measures Contrasted with Probable Alzheimer's Disease. J Cogn Neurosci 2013; 8:135-54. [PMID: 23971420 DOI: 10.1162/jocn.1996.8.2.135] [Citation(s) in RCA: 129] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The purpose of this study was to compare the language and cognitive profiles of four progressive nonfluent aphasia (PNFA) patients with 25 probable Alzheimer's disease (pAD) patients, and to identify the distinct cortical defects associated with cognitive deficits in PNFA using positron emission tomography (PET). Longitudinal observations of PNFA patients revealed progressively telegraphic speech and writing and a gradual deterioration of sentence comprehension, but memory and visual functioning were relatively preserved. Direct contrast with PAD patients revealed that PNFA patients are significantly impaired on grammatical phrase structure aspects of sentence comprehension and expression, phonemic judgments, repetition, and digit span, but not on other cognitive measures. PET studies of PNFA revealed reduced cortical activity throughout the left hemisphere. In addition, there was a prominent defect in left superior and middle temporal and inferior frontal regions of PNFA patients that differed significantly from the distribution of regional cerebral dysfunction in pAD. We conclude that PNFA is associated with a distinct profile of language and cognitive difficulty, and that this pattern of impairment is related to cortical dysfunction in a specific distribution of the left hemisphere.
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Toxic effects of Microcystis cell extracts on the reproductive system of male mice. Toxicon 2006; 48:973-9. [PMID: 17010404 DOI: 10.1016/j.toxicon.2006.07.039] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2006] [Revised: 07/21/2006] [Accepted: 07/25/2006] [Indexed: 11/25/2022]
Abstract
In this paper, the reproductive toxicity of male mice treated with Microcystis aeruginosa cell extracts containing microcystins was examined. In contrast to the control group, male mice exposed intraperitoneally to 3.33 or 6.67 microg microcystins/kg body weight for 14 days had decreased mean body weight, and the mean absolute weight of the testes and epididymides was decreased. However, the mean relative weight of the testes increased compared to the controls. In addition, histological examination of microcystin-treated mice indicated that the testes were damaged and the space between the seminiferous tubules was more pronounced compared to control mice. The quality of mature sperm in the seminiferous tubules was also decreased in treated mice compared with the control group. Further studies showed that motility and viability of the sperm from microcystin-treated mice were reduced, but no significant difference was found in the concentration and abnormality of the sperm from treated mice compared to the control. This study indicated that microcystins had numerous toxic effects on the reproductive system of male mice.
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Response of Tall Fescue Genotypes to a New Strain of Brome mosaic virus. PLANT DISEASE 2005; 89:224-227. [PMID: 30795342 DOI: 10.1094/pd-89-0224] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Brome mosaic virus (BMV) infects many different species within the Poaceae family. A new strain of BMV, named F-BMV, was identified in a tall fescue (Festuca arundinacea Schreb.) plant. Here, we report the identification and characterization of tall fescue plants resistant to F-BMV, and the effects of F-BMV infection on their growth and development. Susceptible plants infected with F-BMV produced 40% fewer tillers and 42% less dry matter compared with virus-resistant plants in a greenhouse study. In the field, susceptible plants infected with F-BMV produced 25% fewer tillers, 36% less dry matter, 10% less plant height, and 40% lower seed yield compared with virus-resistant plants. In a field evaluation of a tall fescue mapping population, the virus symptom scores were negatively correlated with production of dry matter (r = -0.55), plant height (r = -0.55), and seed yield (r = -0.33). Thus, F-BMV has the potential to cause significant economic damage to susceptible tall fescue plants. These results indicate that the virus can present a serious challenge for long-term maintenance of valuable plant materials. A survey of tall fescue plants from Arkansas, Oklahoma, and Oregon indicated that the prevalence F-BMV in the field was very low.
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Presence of Brome mosaic virus in Barley Guttation Fluid and Its Association with Localized Cell Death Response. PHYTOPATHOLOGY 2001; 91:440-8. [PMID: 18943588 DOI: 10.1094/phyto.2001.91.5.440] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
ABSTRACT Water exits from inside the leaf through transpiration or guttation. Under conditions to promote guttation, surface fluid (guttation fluid) from Brome mosaic virus (BMV)-infected barley, wheat, and maize plants was analyzed for the presence of the virus by biological and serological assays. We also investigated the route by which BMV exited infected cells to the intercellular space of the barley leaf. BMV was detected in guttation fluid from systemically infected barley leaves when the initial viral symptoms were observed on these leaves. The virus was also detected in guttation fluid from systemically infected wheat leaves, but not in maize leaves showing either systemic necrosis or chlorotic streaks. Interestingly, in BMV-infected barley leaves, but not in maize leaves showing chlorotic streaks, cell death occurred within and adjacent to veins. Staining of xylem and phloem networks in infected barley leaves with fluorescent dyes showed that xylem, and to a lesser extent phloem, were severely damaged and thus became leaky for dye transport. No such damage was observed in BMV-infected maize leaves showing chlorotic streaks. We propose that in infected barley leaves, BMV exits from damaged vein cells (especially the xylem elements), accumulates in intercellular spaces, and then reaches the surface of the leaves through stomata during guttation or transpiration. In nature, BMV may be carried to adjacent plants and cause infection by movement of vertebrate and invertebrate vectors among infected plants exuding guttation fluid.
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Abstract
We describe RW, a patient who presented with writing difficulty that deteriorated over time. While her graphemes were typically legible, her writing was extremely slow, and her letters were written in an inconsistent and heterogeneous manner (e.g. each "a" in the word "banana" was produced in a different way). Her mental imagery of letters was impoverished, and she also produced allographic errors in her writing. She had some spelling errors as well, but many of these were due to omissions, perseverations, and motor operations. A positron emission tomography scan demonstrated superior parietal occipital and superior frontal defects that were more evident on the left than the right. Our observations are consistent with the hypothesis that RW has a deficit retrieving physical letter forms as manifested by her heterogeneous and slow production of letter forms. This disruption of grapheme retrieval is associated with interruption of a superior frontal-parietal system in the left hemisphere.
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Abstract
PURPOSE Correlations between hippocampal cell density and subcortical metabolism in patients with temporal lobe epilepsy (TLE) were studied to explore possible links between subcortical function and the regulation of hippocampal excitability. METHODS Resected hippocampal cell densities were correlated with cortical and subcortical regional cerebral metabolic rate for glucose (CMRglu), as measured by [18F]-fluorodeoxyglucose positron emission tomography (18-FDG-PET), in 39 patients with intractable TLE who underwent anterior temporal lobectomy (ATL). CMRglu was measured ipsilateral and contralateral to the resected temporal lobe. Linear regression techniques were used for statistical analysis. RESULTS Hilar cell densities correlated positively and significantly with CMRglu in the bilateral thalamus, putamen and globus pallidus, and the ipsilateral caudate. Dentate granule cell densities correlated positively and significantly with CMRglu in the bilateral thalamus and putamen. There was no significant correlation between cell densities and CMRglu in any cortical region, including the hippocampus. CONCLUSIONS We postulate that hippocampal cell loss results in decreased efferent synaptic activity to the thalamus and basal ganglia, causing decreased neuronal activity in these structures with consequent hypometabolism. This synaptic activity has a significant bilateral component. Subcortical hypometabolism in patients with TLE may reinforce the epileptogenic potential of mesial temporal lobe discharges.
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Abstract
We conducted cognitive, imaging, and neuropathological studies on a patient with Pick's disease. The patient was impaired at interpreting sentences with complex grammatical constructions, differing significantly from control subjects and patients with Alzheimer's disease (AD). Evaluation of regional brain functioning at rest, with positron emission tomography, revealed reduced left frontal activity compared with control subjects and AD patients. Autopsy demonstrated the classic pathology of Pick's disease, including massive neuron loss and gliosis in the frontal and cingulate cortex as well as numerous tau-positive hippocampal Pick bodies. The abnormal tau proteins were phosphorylated at the same amino acid residues as AD paired helical filament tau (PHFtau), but they exhibited a unique migration profile on western blot. Our observations support the hypothesis that a distinct variety of hyperphosphorylated tau in Pick's disease compromises the long-term viability of selectively vulnerable populations of neurons in frontal cortices that contribute to sentence processing.
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Use of positron emission tomography and evoked potentials in the detection of cortical afferents from the gastrointestinal tract. Am J Gastroenterol 1996; 91:2372-6. [PMID: 8931420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Positron emission tomography permits precision identification of the cerebral regions involved in physiologic functions. As the cerebral localization for visceral sensation has not been identified, our aim was to examine the cerebral viscerotopic representation for rectal sensation. METHODS Cerebral-evoked potentials were measured in five healthy volunteers who underwent rectal balloon distension. Simultaneously, cerebral blood flow was measured using positron emission tomography with 15H2O. RESULTS A cerebral-evoked potential occurred with rectal balloon distension. An increase in cerebral blood flow was noted in the pre- and postcentral gyrus and the thalamus. CONCLUSION The techniques for measuring cerebral-evoked potentials and cortical blood flow are useful in the delineation of the cerebral regions subserving visceral sensation.
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Nla and Nlb of peanut stripe potyvirus are present in the nucleus of infected cells, but do not form inclusions. Virology 1996; 224:368-79. [PMID: 8874498 DOI: 10.1006/viro.1996.0544] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We investigated, by immunological and gene-fusion methods, whether the failure of peanut stripe potyvirus (PStV)-encoded nuclear inclusion proteins a (Nla) and b (Nlb) to form nuclear inclusions is due to the lack of their in vivo accumulation or the inability of one or both proteins to be transported into the nucleus Nla domains (Nla-VPg and Nla-proteinase), full-length Nlb, and full-length cylindrical inclusion (CI) protein of PStV were cloned, expressed in Escherichia coli, and used for antisera production. Immunoblot analysis of accumulation of Nla, Nlb, and CI in time course experiments revealed that they accumulated to similar levels in PStV-infected Nicotiana benthamiana. In immunocytochemical studies with electron microscopy, antiserum against Nla-VPg, Nla-Pro, and Nlb specifically labeled Nla and Nlb proteins throughout the nuclei of PStV-infected cells, in the absence of nuclear inclusions. Translational fusions were made between Nla and Nlb to either the green fluorescence protein or the beta-glucuronidase in vectors for transient gene expression or stable expression in transgenic plants respectively. Fusion proteins containing Nla accumulated in the nucleus, whereas fusion proteins containing Nlb accumulated in a punctate pattern in the cytoplasm. These data indicate that at least Nla possesses a nuclear localization signal.
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Enhanced cytochemical detection of viral proteins and RNAs using double-sided labeling and light microscopy. Biotechniques 1996; 20:111-5. [PMID: 8770414 DOI: 10.2144/96201st06] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
We have developed a double-sided labeling technique for detecting viral proteins or RNAs in plastic-embedded leaf tissue by immunocytochemistry or in situ hybridization, respectively, and light microscopy. The signal from the target was enhanced by double-sided labeling when compared with single-sided labeling because sections were submerged in labeling solutions with both sides accessible to antibodies or complementary RNAs. The additional label was visible during microscopic analysis. Background signal was decreased since the tissue was probed and washed under conditions where folds and creases in the tissue were minimized. This technique uses the same equipment and chemicals as for single-sided labeling, and thus adjustments for reagent expenditures are not necessary. The procedure should be applicable to animal and plant tissue.
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Abstract
We performed morphological and immunohistochemical studies on sural nerve biopsies from two members of a Charcot-Marie-Tooth type 1B family, in which a mutation of the P0 gene on chromosome 1 had been found. Biopsies showed a tomaculous neuropathy with loss of myelinated fibers and frequent small onion bulbs. Immunofluorescence with antibodies to P0 showed this protein to be present in tomaculous and non-tomaculous areas of the myelin sheath. The severity of the myelin abnormalities suggests that in this family Charcot-Marie-Tooth disease may result from a generalized disturbance of Schwann cells as a result of an abnormal P0 protein.
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Vasculitic neuropathy in a patient with cryoglobulinemia and anti-MAG IGM monoclonal gammopathy. Muscle Nerve 1992; 15:891-8. [PMID: 1379693 DOI: 10.1002/mus.880150805] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A patient with sensorimotor mononeuritis multiplex had a type II cryoglobulin with an IgM kappa M-protein that appeared to contain monoclonal anti-MAG antibodies of the same isotype. A sural nerve biopsy demonstrated necrotizing arteritis and features of both axonal degeneration and demyelination. IgM kappa and C3 deposits were present on the myelin sheath of some residual nerve fibers. The findings suggest that the anti-MAG antibodies contributed to the myelin damage, while cryoprecipitates may have caused the vasculitis and axonal degeneration.
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