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Levy S, Ihmels J, Carmi M, Weinberger A, Friedlander G, Barkai N. Strategy of transcription regulation in the budding yeast. PLoS One 2007; 2:e250. [PMID: 17327914 PMCID: PMC1803021 DOI: 10.1371/journal.pone.0000250] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2007] [Accepted: 01/30/2007] [Indexed: 12/03/2022] Open
Abstract
Cells must adjust their gene expression in order to compete in a constantly changing environment. Two alternative strategies could in principle ensure optimal coordination of gene expression with physiological requirements. First, characters of the internal physiological state, such as growth rate, metabolite levels, or energy availability, could be feedback to tune gene expression. Second, internal needs could be inferred from the external environment, using evolutionary-tuned signaling pathways. Coordination of ribosomal biogenesis with the requirement for protein synthesis is of particular importance, since cells devote a large fraction of their biosynthetic capacity for ribosomal biogenesis. To define the relative contribution of internal vs. external sensing to the regulation of ribosomal biogenesis gene expression in yeast, we subjected S. cerevisiae cells to conditions which decoupled the actual vs. environmentally-expected growth rate. Gene expression followed the environmental signal according to the expected, but not the actual, growth rate. Simultaneous monitoring of gene expression and growth rate in continuous cultures further confirmed that ribosome biogenesis genes responded rapidly to changes in the environments but were oblivious to longer-term changes in growth rate. Our results suggest that the capacity to anticipate and prepare for environmentally-mediated changes in cell growth presented a major selection force during yeast evolution.
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MESH Headings
- Alcohol Dehydrogenase/biosynthesis
- Alcohol Dehydrogenase/genetics
- Culture Media/pharmacology
- Feedback, Physiological
- Fermentation/genetics
- Gene Expression Profiling
- Gene Expression Regulation, Fungal/drug effects
- Gene Expression Regulation, Fungal/physiology
- Genes, Fungal
- Genes, cdc
- Mycology/methods
- Nucleotides/metabolism
- Oligonucleotide Array Sequence Analysis
- RNA, Fungal/biosynthesis
- RNA, Fungal/genetics
- RNA, Messenger/biosynthesis
- RNA, Messenger/genetics
- RNA, Ribosomal/biosynthesis
- RNA, Ribosomal/genetics
- RNA, Transfer/biosynthesis
- RNA, Transfer/genetics
- Reproduction, Asexual
- Ribosomes/metabolism
- Saccharomyces cerevisiae/cytology
- Saccharomyces cerevisiae/drug effects
- Saccharomyces cerevisiae/genetics
- Saccharomyces cerevisiae/growth & development
- Saccharomyces cerevisiae Proteins/biosynthesis
- Saccharomyces cerevisiae Proteins/genetics
- Transcription, Genetic/drug effects
- Transcription, Genetic/physiology
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Monselise A, Weinberger A, Monselise Y, Fraser A, Sulkes J, Krause I. Anti-Saccharomyces cerevisiae antibodies in Behçet's disease--a familial study. Clin Exp Rheumatol 2006; 24:S87-90. [PMID: 17067434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
OBJECTIVE To evaluate the rate and clinical correlations of antibodies against saccharomyces cerevisiae (ASCA) among healthy family members of patients with Behçet's disease (BD). METHODS Twenty-one BD patients and 52 healthy family members (HFM) were studied. Data from medical files and from patients' interviews was collected, regarding the entire spectrum of disease manifestations. Each family member was personally interviewed and a questionnaire composed of BD symptoms and their temporal relation was compiled. IgA- and IgG-ASCA levels, determined by ELISA, were studied in all BD patients and their family members, the results were compared to a group of 23 healthy controls (HC). RESULTS Eight (38.1%) BD patients were ASCA positive, compared to five among HFM (9.6%) and none among healthy unrelated controls (p=0.001). Mean IgG and IgA-ASCA levels were significantly higher in BD patients compared with HFM and HC groups (p = 0.002 and p = 0.03, respectively). No correlation was found between positive ASCA tests and any of BD-related manifestations. Mean IgG-ASCA levels were significantly lower in HFM compared to BD patients (p = 0.03), yet IgA-ASCA levels were similar in HFM and BD. Mean IgG and IgA-ASCA levels were higher in HFM compared with healthy unrelated controls (p=0.09 and p=0.03). No difference was found in ASCA rates between relatives of BD patients who had positive or negative ASCA tests, or between spouses of BD patients and genetically related relatives. In HFM with recurrent oral ulcers there was a positive correlation between titers of IgA-ASCA and the yearly number of oral ulcers episodes (p = 0.01), and mean ulcers healing time (p = 0.01). IgG-ASCA titers correlated with yearly number of aphtae episodes (p = 0.03). CONCLUSION The results of this study confirm our previous observation on a high prevalence of ASCA in BD. ASCA levels are also increased in healthy family members of BD patients, and are probably influenced by genetic as well as environmental factors. ASCA in HFM were significantly associated with a more severe oral ulcer disease. The role of ASCA as a marker for predisposition to develop future BD remains to be evaluated.
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Tirosh I, Weinberger A, Carmi M, Barkai N. A genetic signature of interspecies variations in gene expression. Nat Genet 2006; 38:830-4. [PMID: 16783381 DOI: 10.1038/ng1819] [Citation(s) in RCA: 227] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2006] [Accepted: 05/10/2006] [Indexed: 12/13/2022]
Abstract
Phenotypic diversity is generated through changes in gene structure or gene regulation. The availability of full genomic sequences allows for the analysis of gene sequence evolution. In contrast, little is known about the principles driving the evolution of gene expression. Here we describe the differential transcriptional response of four closely related yeast species to a variety of environmental stresses. Genes containing a TATA box in their promoters show an increased interspecies variability in expression, independent of their functional association. Examining additional data sets, we find that this enhanced expression divergence of TATA-containing genes is consistent across all eukaryotes studied to date, including nematodes, fruit flies, plants and mammals. TATA-dependent regulation may enhance the sensitivity of gene expression to genetic perturbations, thus facilitating expression divergence at particular genetic loci.
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Castillo-Flores A, Weinberger A, Robinson M, Gerst JE. Mso1 Is a Novel Component of the Yeast Exocytic SNARE Complex. J Biol Chem 2005; 280:34033-41. [PMID: 16087665 DOI: 10.1074/jbc.m507142200] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The yeast exocytic SNARE complex consists of one molecule each of the Sso1/2 target SNAREs, Snc1/2 vesicular SNAREs, and the Sec9 target SNARE, which form a fusion complex that is conserved in evolution. Another protein, Sec1, binds to the SNARE complex to facilitate assembly. We show that Mso1, a Sec1-interacting protein, also binds to the SNARE complex and plays a role in mediating Sec1 functions. Like Sec1, Mso1 bound to SNAREs in cells containing SNARE complexes (i.e. wild-type, sec1-1, and sec18-1 cells), but not in cells in which complex formation is inhibited (i.e. sec4-8 cells). Nevertheless, Mso1 remained associated with Sec1 even in sec4-8 cells, indicating that they act as a pair. Mso1 localized primarily to the plasma membrane of the bud when SNARE complex formation was not impaired but was mostly in the cytoplasm when assembly was prevented. Genetic studies suggest that Mso1 enhances Sec1 function while attenuating Sec4 GTPase function. This dual action may impart temporal regulation between Sec4 turnoff and Sec1-mediated SNARE assembly. Notably, a small region at the C terminus of Mso1 is conserved in the mammalian Munc13/Mint proteins and is necessary for proper membrane localization. Overexpression of Mso1 lacking this domain (Mso1-(1-193)) inhibited the growth of cells bearing an attenuated Sec4 GTPase. These results suggest that Mso1 is a component of the exocytic SNARE complex and a possible ortholog of the Munc13/Mint proteins.
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Weinberger A, Kamena F, Kama R, Spang A, Gerst JE. Control of Golgi morphology and function by Sed5 t-SNARE phosphorylation. Mol Biol Cell 2005; 16:4918-30. [PMID: 16093353 PMCID: PMC1237093 DOI: 10.1091/mbc.e05-02-0101] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Previously, we demonstrated that the phosphorylation of t-SNAREs by protein kinase A (PKA) affects their ability to participate in SNARE complexes and to confer endocytosis and exocytosis in yeast. Here, we show that the presumed phosphorylation of a conserved membrane-proximal PKA consensus site (serine-317) in the Sed5 t-SNARE regulates endoplasmic reticulum (ER)-Golgi transport, as well as Golgi morphology. Sed5 is a phosphoprotein, and both alanine and aspartate substitutions in serine-317 directly affect intracellular protein trafficking. The aspartate substitution results in elaboration of the ER, defects in Golgi-ER retrograde transport, an accumulation of small transport vesicles, and the inhibition of growth of most cell types. In contrast, the alanine substitution has no deleterious effects upon transport and growth, but results in ordering of the Golgi into a structure reminiscent of mammalian apparatus. This structure seems to require the recycling of Sed5, because it was found not to occur in sec21-2 cells that are defective in retrograde transport. Thus, a cycle of Sed5 phosphorylation and dephosphorylation is required for normal t-SNARE function and may choreograph Golgi ordering and dispersal.
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56
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Krause I, Monselise Y, Milo G, Weinberger A. Anti-Saccharomyces cerevisiae antibodies. A novel serologic marker for Behçet's disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2003; 528:201-4. [PMID: 12918690 DOI: 10.1007/0-306-48382-3_39] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Weinberger A, Klein T, Krause I. Clinical and genetic characteristics of late-onset Behçet's disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2003; 528:99-101. [PMID: 12918671 DOI: 10.1007/0-306-48382-3_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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Friedmann E, Salzberg Y, Weinberger A, Shaltiel S, Gerst JE. YOS9, the putative yeast homolog of a gene amplified in osteosarcomas, is involved in the endoplasmic reticulum (ER)-Golgi transport of GPI-anchored proteins. J Biol Chem 2002; 277:35274-81. [PMID: 12077121 DOI: 10.1074/jbc.m201044200] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The OS-9 gene maps to a region (q13-15) of chromosome 12 that is highly amplified in human osteosarcomas and encodes a protein of unknown function. Here we have characterized a homolog designated as YOS9 (YDR057w) from Saccharomyces cerevisiae. The yeast protein (Yos9) is a membrane-associated glycoprotein that localizes to the endoplasmic reticulum (ER). YOS9 interacts genetically with genes involved in ER-Golgi transport, particularly SEC34, whose temperature-sensitive mutant is rescued by YOS9 overexpression. Interestingly, Yos9 appears to play a direct role in the transport of glycosylphosphatidylinositol (GPI)-anchored proteins to the Golgi apparatus. Yos9 binds directly to Gas1 and Mkc7 and accelerates Gas1 transport and processing in cells overexpressing YOS9. Correspondingly, Gas1 processing is slowed in cells bearing a deletion in YOS9. No effect upon the transport and processing of non-GPI-anchored proteins (e.g. invertase and carboxypeptidase Y) was detected in cells either lacking or overexpressing Yos9. As Yos9 is not a component of the Emp24 complex, it may act as a novel escort factor for GPI-anchored proteins in ER-Golgi transport in yeast and possibly in mammals.
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Molad Y, Gorshtein A, Wysenbeek AJ, Guedj D, Majadla R, Weinberger A, Amit-Vazina M. Protective effect of hydroxychloroquine in systemic lupus erythematosus. Prospective long-term study of an Israeli cohort. Lupus 2002; 11:356-61. [PMID: 12139373 DOI: 10.1191/0961203302lu203ra] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Systemic lupus erythematosus-associated irreversible organ/system damage was previously associated with various clinical and demographic features. We analysed the Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index (SLICC/ACR DI) in a cohort of 151 Israeli patients followed for a mean (+/- s.d.) period of 45.7 +/- 37.4 months. Mean score of SLICC/ACR DI at the first and last encounters were 0.17 +/- 64 and 1.64 +/- 2.1, respectively (P < 0.0001). Multiple logistic regression analyses disclosed a statistically significant positive correlation with corticosteroid and cyclophosphamide therapy. Hydroxychloroquine therapy was significantly associated with lower SLICC/ACR DI. Although the size of our study group did not allow us to find specific organs/systems which were associated with the protective effect of hydroxychloroquine, we suggest this is due to the antiatherogenic effects attributed to antimalarial therapy in SLE.
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Krause I, Monselise Y, Milo G, Weinberger A. Anti-Saccharomyces cerevisiae antibodies--a novel serologic marker for Behçet's disease. Clin Exp Rheumatol 2002; 20:S21-4. [PMID: 12371630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
OBJECTIVE To evaluate the prevalence and clinical correlations of antibodies against Saccharomyces cerevisiae (ASCA) among patients with BD. METHODS Twenty-seven BD patients were studied. Data from medical files and from patients' interviews was collected, regarding the entire spectrum of disease manifestations, and a severity score was calculated for each patient. IgA- and IgG-ASCA levels, determined by ELISA, were studied in all BD patients and in three control groups: patients with recurrent aphthous stomatitis (RAS), systemic lupus erythematosus (SLE) and healthy volunteers. RESULTS Thirteen BD patients (48.1%) were ASCA-positive, compared to one patient in each control group (10%, p = 0.01). The mean value of IgG-ASCA in the BD patients was 20.7 +/- 12.3 units, significantly higher than in patients with RAS (10.0 +/- 5.5, p < 0.001), SLE (11.8 +/- 9.3, p < 0.03) or healthy volunteers (10.8 +/- 9.8, p < 0.02). Mean IgA-ASCA level was 16.8 +/- 8.8 units in the BD patients, significantly higher compared to healthy volunteers (11.0 +/- 5.0, p = 0.02) but similar to patients with RAS (17.0 +/- 5.3). No correlation was found between ASCA and any BD-associated clinical manifestation nor the presence of HLA-B5. No difference was found in the rate of major oral ulcers nor in the systemic disease severity score between positive- and negative-ASCA patients (27.3% vs. 30.8%, and 7.31 +/- 1.80 vs. 7.28 +/- 2.27 respectively, NS). CONCLUSION The results of our study associate, for the first time, the presence of a distinct antibody, i.e. ASCA, with BD. ASCA were not linked to a specific clinical manifestation of the disease and probably do not pose an increased risk for a more severe disease course.
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Molad Y, Miroshnik E, Sulkes J, Pitlik S, Weinberger A, Monselise Y. Urinary soluble VCAM-1 in systemic lupus erythematosus: a clinical marker for monitoring disease activity and damage. Clin Exp Rheumatol 2002; 20:403-6. [PMID: 12102480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
OBJECTIVE To determine the urinary levels of soluble vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) in patients with systemic lupus erythematosus (SLE) and to assess their relationship with clinical and laboratory features and the degree of activity and damage associated with the disease. METHODS The study sample included 24 consecutive patients with SLE. 24-hour urine samples were collected for the determination of soluble VCAM-1 and ICAM-1 levels by ELISA. Disease activity was defined by the SLE Disease Active Index (SLEDAI) and disease outcome by the Systemic Lupus International Collaborating Clinics/American College of Rheumatology (SLICC/ ACR) damage index. RESULTS The urinary soluble VCAM-1 level was significantly higher in patients with SLE compared to normal controls (32.35+/-34.27 vs. 4.66+/-3.8 ng/mg creatinine, p = 0.0005) and statistically significantly correlated with disease activity (SLEDAI), a low serum C3 level, decreased creatinine clearance and albuminuria, as well as with disease damage (SLICC/ACR damage index). In contrast, the urinary soluble ICAM-1 level was not significantly higher in the patients' group compared with the controls (4.5+/-5.19 vs. 2.72+/-2.31 ng/mg creatinine, p=0.2), but was statistically significantly correlated with hematuria and albuminuria. CONCLUSION Our data suggest that the urinary level of soluble VCAM-1 significantly correlates with overall disease activity and damage scores, but not with nephritis in SLE.
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Gurunathan S, Marash M, Weinberger A, Gerst JE. t-SNARE phosphorylation regulates endocytosis in yeast. Mol Biol Cell 2002; 13:1594-607. [PMID: 12006655 PMCID: PMC111129 DOI: 10.1091/mbc.01-11-0541] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Earlier we demonstrated that activation of a ceramide-activated protein phosphatase (CAPP) conferred normal growth and secretion to yeast lacking their complement of exocytic v-SNAREs (Snc1,2) or bearing a temperature-sensitive mutation in an exocytic t-SNARE (Sso2). CAPP activation led to Sso dephosphorylation and enhanced the assembly of t-SNAREs into functional complexes. Thus, exocytosis in yeast is modulated by t-SNARE phosphorylation. Here, we show that endocytic defects in cells lacking the v- and t-SNAREs involved in endocytosis are also rescued by CAPP activation. Yeast lacking the Tlg1 or Tlg2 t-SNAREs, the Snc v-SNAREs, or both, undergo endocytosis after phosphatase activation. CAPP activation correlated with restored uptake of FM4-64 to the vacuole, the uptake and degradation of the Ste2 receptor after mating factor treatment, and the dephosphorylation and assembly of Tlg1,2 into SNARE complexes. Activation of the phosphatase by treatment with C(2)-ceramide, VBM/ELO gene inactivation, or by the overexpression of SIT4 was sufficient to confer rescue. Finally, we found that mutation of single PKA sites in Tlg1 (Ser31 to Ala31) or Tlg2 (Ser90 to Ala90) was sufficient to restore endocytosis, but not exocytosis, to snc cells. These results suggest that endocytosis is also modulated by t-SNARE phosphorylation in vivo.
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Jaber L, Milo G, Halpern GJ, Krause I, Weinberger A. Prevalence of Behçet's disease in an Arab community in Israel. Ann Rheum Dis 2002; 61:365-6. [PMID: 11874845 PMCID: PMC1754053 DOI: 10.1136/ard.61.4.365] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To evaluate the prevalence of Behçet's disease (BD) in an Israeli Arab town (Taibe). METHODS Questionnaires about the occurrence and prevalence of aphthous ulcers were distributed randomly to the parents of children attending a paediatric centre in Taibe. The parents were asked whether they or any of their children aged between 10 and 20 years had recurrent aphthous stomatitis. Any who had had more than four aphthous episodes (each episode lasting more than seven days) during the previous year were invited for an extensive interview and examination by a rheumatologist or a paediatrician. RESULTS A total of 4876 subjects were included in this survey, of whom six (one male, five female) were diagnosed as having BD. Of these six, two were siblings (a brother and a sister). Five had skin lesions, four had visual involvement, and all had genital ulcers and joint symptoms; one in two patients had a positive pathergy test. Five of the six carried HLA-B5 antigens. The results showed a prevalence of 12/10,000 in Taibe. CONCLUSION The prevalence of BD found in our survey is high and concurs with that found in other Mediterranean and Asian countries.
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Arad M, Shotan A, Weinberger A, Aurbach I, Rabinowitz B. Plasma atrial natriuretic peptide levels for predicting the outcome of atrial fibrillation. Cardiology 2001; 95:74-9. [PMID: 11423710 DOI: 10.1159/000047349] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The predictive value of plasma atrial natriuretic peptide (ANP) on the cardioversion outcome was evaluated in 46 hospitalized patients with recent-onset atrial fibrillation (AF). Cardioversion was successful in 42 (91%) patients, 7 (15%) of them regained sinus rhythm spontaneously. After 12 months, 14 (33%) cardioverted patients were in chronic AF. There were no differences in plasma ANP levels between groups where cardioversion failed, those who cardioverted but later developed chronic AF or those who remained in sinus rhythm. However, among patients who were on antiarrhythmic therapy, ANP levels obtained after cardioversion were lower in those who later remained in sinus rhythm. We conclude that lower ANP after cardioversion may be associated with increased chances of long-term preservation of sinus rhythm.
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Paul M, Klein T, Krause I, Molad Y, Narinsky R, Weinberger A. Allelic distribution of HLA-B*5 in HLA-B5-positive Israeli patients with Behçet's disease. TISSUE ANTIGENS 2001; 58:185-6. [PMID: 11703827 DOI: 10.1034/j.1399-0039.2001.580307.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In order to investigate the sub-typing of the B5 antigen in Israeli (Jewish and Arabic) patients with Behçet's disease (BD) allele-specific genotyping of B51 and B52 alleles was performed in Israeli BD patients and healthy controls. Among the HLA-B51-positive BD patients, B*5101 was found to be the predominant allele, identified in 62% of all BD patients and 78% of Jewish BD patients. HLA-B*5101 was also the predominant allele in HLA-B51-positive healthy controls. HLA-B*5108 and B*5104 alleles were identified in 23% and 15% of B51-positive BD patients, respectively. The HLA-B*5201 allele was identified in all HLA-B52-positive patients and controls. Our study suggests that both HLA-B*5101 and HLA-B*5201 are the dominant alleles of HLA-B5 in Israeli BD patients.
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Yosipovitch G, Kaplan I, Calderon S, David M, Chan YH, Weinberger A. Distribution of mucosal pH on the bucca, tongue, lips and palate. A study in healthy volunteers and patients with lichen planus, Behçet's disease and burning mouth syndrome. Acta Derm Venereol 2001; 81:178-80. [PMID: 11558872 DOI: 10.1080/000155501750376258] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022] Open
Abstract
Saliva coating all oral surfaces has a buffering capacity that neutralizes bacterial and cariogenic acids. The aim of our study was to determine the surface pH in different regions of the oral cavity in healthy volunteers and in patients with diseases affecting the oral mucosa. Oral pH was measured with a flat glass electrode on the anterior third of the ventral surface of the tongue, middle hard palate, buccal mucosa and inner lips in 32 healthy volunteers, 12 patients with Behçet's disease, 23 patients with oral lichen planus, and 11 patients with burning mouth syndrome. The present study showed that there was an uneven distribution of oral surface pH. The palate had a higher pH than most other sites in all groups, and in patients with lichen planus, the palate pH was higher than that in healthy controls. Those with dentures had lower pH values in the hard palate than dentate patients. The relatively high pH in the palate region in all patient groups as well as healthy volunteers needs to be further studied to clarify its mechanisms and clinical relevance.
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Krause I, Mader R, Sulkes J, Paul M, Uziel Y, Adawi M, Weinberger A. Behçet's disease in Israel: the influence of ethnic origin on disease expression and severity. J Rheumatol 2001; 28:1033-6. [PMID: 11361184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
OBJECTIVE To evaluate the relationship between ethnic origin and manifestations of Behçet's disease (BD) in Israel. METHODS We studied 100 Israeli patients with BD, 66 Jews and 34 Arabs. The 3 largest ethnic groups of Jewish patients originated from Iran/Iraq (n = 21), Turkey (n = 12), and North African countries (n = 21). Patients were evaluated with respect to the entire spectrum of disease manifestations, and a systemic severity score for BD was calculated for each patient. Disease expression was compared between Jewish and Arab patients and among Jewish ethnic groups. RESULTS There were no statistically significant differences between Jewish and Arab patients with respect to male:female ratio, prevalence of HLA-B5, age of disease onset, or disease duration. Disease expression and severity score were also similar in the 2 groups, but Arab patients had a higher rate of posterior uveitis (20.6 vs 4.6%; p < 0.03). Among the 3 largest Jewish ethnic groups, patients of North African origin had a significantly higher rate of ocular disease (p < 0.01), mainly in the form of anterior uveitis (p < 0.01). These patients also had higher rates of arthritis, overall vascular disease, deep vein thrombosis, and neuro-Behçet without reaching statistical significance. The disease severity score in this group was significantly higher compared to the other Jewish ethnic groups (p < 0.02). CONCLUSION The expression of BD is similar in Israeli Jewish and Arab patients but the latter have more severe eye disease. The disease in Israeli Jewish patients is most severe in those originating from North African countries.
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Dobberstein H, Solbach U, Weinberger A, Wolf S. Correlation between retinal microcirculation and blood viscosity in patients with hyperviscosity syndrome. Clin Hemorheol Microcirc 2001; 20:31-5. [PMID: 11185681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Hyperviscosity syndrome leads to vascular disturbances in different organs. In the retina typical ophthalmoscopic changes can be found including dot and blot hemorrhages, retinal and optic nerve head edema, and increased diameter of retinal veins. In this study we examined the retinal microcirculation in patients with hyperviscosity syndrome. Nineteen patients (14 patients with Waldenstroem's macroglobulinemia, two patients with kryoglobulinemia, three patients with plasmacytoma) were examined. All patients underwent a video fluorescein angiography. In all angiograms the arteriovenous passage time (AVP) and the arm retina time (ART) were quantified. In addition, hematocrit (Hct) and plasma viscosity (ETA) were measured. In patients with hyperviscosity syndrome AVP was significantly prolonged in comparison to healthy volunteers (AVP: 2.5+/-1.3 s vs. 1.5+/-0.4 s; p < 0.01). The ART showed no significant differences. Plasma viscosity was doubled in patients as compared with reference values (ETA: 2.57+/-1.5 mPa s vs. 1.24+/-0.08 mPa s; p < 0.01). In this study we showed an increase in plasma viscosity as well as an increase in arteriovenous passage time. This may result in retinal circulatory disturbances and may cause the typical fundus changes in patients with hyperviscosity syndrome.
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Jaber L, Weinberger A, Klein T, Yaniv I, Mukamel M. Close association of HLA-B52 and HLA-B44 antigens in Israeli Arab adolescents with recurrent aphthous stomatitis. ARCHIVES OF OTOLARYNGOLOGY--HEAD & NECK SURGERY 2001; 127:184-7. [PMID: 11177036 DOI: 10.1001/archotol.127.2.184] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVES To investigate the incidence and clinical features of recurrent aphthous stomatitis (RAS) among Israeli Arab adolescents and to determine the HLA typing profile in affected subjects. STUDY DESIGN Cross-sectional study. SETTING Junior high school in the largest Arab town in Israel. PARTICIPANTS Four hundred seventy-seven Israeli Arab junior high school students filled out a questionnaire. Students who reported more than 4 episodes of RAS during the previous year were interviewed by telephone. Those whose responses were confirmed were invited to the clinic. Of these, 22 were chosen at random for HLA typing. Findings were compared with those in 117 healthy Israeli Arabs who were candidate donors of bone marrow to patients at the Institute of Hematology-Oncology, Schneider Children's Medical Center of Israel, Petah Tiqva. RESULTS Recurrent aphthous stomatitis was confirmed in 80 subjects (16.7%). Of the 22 patients who underwent HLA typing, 7 (31.4%) had HLA-B52 antigens and 8 (36.4%) had HLA-B44 antigens; corresponding figures for the control group were 10 subjects (8.5%) (P = .007) and 9 subjects (7.7%) (P = .001), respectively. CONCLUSIONS There is a close association of HLA-B52 and HLA-B44 in Israeli Arab youths with RAS. Long-term follow-up is needed to determine the relationship between RAS and Behçet disease.
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Molad Y, Gal E, Magal N, Sulkes J, Mukamel M, Weinberger A, Lalazari S, Shohat M. Renal outcome and vascular morbidity in systemic lupus erythematosus (SLE): lack of association with the angiotensin-converting enzyme gene polymorphism. Semin Arthritis Rheum 2000; 30:132-7. [PMID: 11071585 DOI: 10.1053/sarh.2000.8365] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVES The angiotensin-converting enzyme (ACE) gene polymorphism has been associated with worse outcome in various chronic glomerular disorders and in hypertension. Because nephritis and vascular morbidity are prominent determinants of outcome in systemic lupus erythematosus (SLE), we studied the distribution and prognostic effect the ACE genotype might have on the outcome of SLE. METHODS Fifty-six consecutive Israeli SLE patients and 48 (sex and ethnic origin matched) healthy individuals were evaluated for the ACE genotype by a polymerase chain reaction-based assay. The clinical and laboratory parameters of the patients as well as the SLE disease activity index (SLEDAI) and the presence of hypertension, diabetes mellitus, ischemic heart disease, congestive heart failure, and stroke were correlated with the ACE genotype. RESULTS The distribution of the ACE genotype D/D, D/I, and I/I in the lupus group was 59%, 36%, and 5%, respectively, similar to the distribution in the control group (54%, 31%, and 15%, respectively). We failed to find any significant association between the ACE genotype and disease manifestations, SLEDAI, renal function, or cardiovascular and cerebrovascular morbidity. The clinical and laboratory parameters associated with renal outcome and vascular morbidity in our cohort are described. CONCLUSIONS No difference was found between the distribution of the ACE genotype in lupus patients and the general population in Israel. Renal function as well as cardiovascular and cerebrovascular morbidity among Israeli patients with SLE are disease-related and independent of the ACE gene polymorphism.
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Shraga E, Weinberger A. Tophaceous deposits mimicking osteoarthritic hands. THE ISRAEL MEDICAL ASSOCIATION JOURNAL : IMAJ 2000; 2:785. [PMID: 11344737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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Weinberger A, Molad Y. Gouty olecranon bursae. THE ISRAEL MEDICAL ASSOCIATION JOURNAL : IMAJ 2000; 2:474. [PMID: 10897241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Krause I, Molad Y, Mitrani M, Weinberger A. Pathergy reaction in Behçet's disease: lack of correlation with mucocutaneous manifestations and systemic disease expression. Clin Exp Rheumatol 2000; 18:71-4. [PMID: 10728447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
OBJECTIVE The pathergy reaction is a unique feature of Behçet's disease (BD) and, according to the International Study Group (ISG), is among the major criteria required for the diagnosis. Different positive pathergy reaction rates in BD have been reported worldwide. We evaluated the prevalence of the pathergy reaction in Israeli BD patients, and its relation to mucocutaneous and systemic manifestations of the disease. METHODS Forty-three patients were studied, all of whom fulfilled the ISG criteria for BD. The mucocutaneous and systemic disease manifestations were analyzed with respect to the presence of the pathergy reaction, and a systemic severity score for BD was calculated according to the potential morbidity and mortality associated with various clinical features. RESULTS Nineteen patients (44.2%) had a positive pathergy test. The pathergy-positive and pathergy-negative BD groups showed a similar male:female ratio, age at disease onset, and mean disease duration. They also exhibited similar HLA-B5 levels and a similar frequency of oral ulcerations in close family members. The mucocutaneous manifestations, systemic disease expression, and severity score were similar in patients with and without the pathergy reaction. CONCLUSION The presence of a positive pathergy reaction, although common in Israeli BD patients, is not associated with an increased risk for specific mucocutaneous or systemic manifestations of the disease, and probably does not predict a more severe disease course.
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Krause I, Uziel Y, Guedj D, Mukamel M, Harel L, Molad Y, Weinberger A. Childhood Behçet's disease: clinical features and comparison with adult-onset disease. Rheumatology (Oxford) 1999; 38:457-62. [PMID: 10371286 DOI: 10.1093/rheumatology/38.5.457] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE To study the clinical spectrum of Behçet's disease (BD) in childhood, in comparison to adult-onset disease. METHODS Nineteen children, who fulfilled disease criteria up to the age of 16 yr, were studied. The results were compared to those of 34 adult patients with BD. An activity index and severity score were calculated for both study groups. RESULTS The mean age of disease onset was 6.9+/-3.9 yr, similar ages of onset were found in males and females. The clinical spectrum of childhood BD resembled that of adult disease; however, the prevalence of certain manifestations was different between children and adults. Children with BD had significantly less genital ulcers, less vascular thromboses and more non-specific gastrointestinal symptoms, as well as central nervous system involvement and arthralgia. A relatively high prevalence of uveitis was found in childhood BD. The activity index and severity score were significantly lower in children than in adults. CONCLUSION Our results point to a similar systemic expression of BD in children and adults; however, the disease seems to run a less severe course in children.
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Krause I, Rosen Y, Kaplan I, Milo G, Guedj D, Molad Y, Weinberger A. Recurrent aphthous stomatitis in Behçet's disease: clinical features and correlation with systemic disease expression and severity. J Oral Pathol Med 1999; 28:193-6. [PMID: 10226940 DOI: 10.1111/j.1600-0714.1999.tb02023.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Behçet's disease (BD) is a multisystem disease, in which recurrent aphthous stomatitis (RAS) is a universal finding. We studied the expression of RAS in patients with BD, and the correlation between major or minor RAS and systemic expression and severity of the disease. Thirty-five patients with BD were studied, of whom 13 (37%) had major, 21 (60%) had minor and one (3%) had herpetiform RAS. The frequency of major RAS was significantly higher compared with a control group of patients with idiopathic RAS (37% vs 9%, P < 0.05). The BD patients with major RAS had significantly more relapses of oral ulceration in a year, higher numbers of oral ulcers per relapse, and longer duration of aphthous episodes, compared with patients with minor RAS. Oral ulcers also appeared at a significantly younger age in patients with major than with minor RAS. However, the systemic expression of the disease, as well as the disease severity score, were similar in patients with major and minor RAS. The results of this study indicate that major RAS is common in patients with BD, and is associated with a more severe, repeated and prolonged oral disease. Nevertheless, the presence of major RAS in BD does not predict a more severe systemic illness.
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Krause I, Leibovici L, Guedj D, Molad Y, Uziel Y, Weinberger A. Disease patterns of patients with Behçet's disease demonstrated by factor analysis. Clin Exp Rheumatol 1999; 17:347-50. [PMID: 10410270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
OBJECTIVE To explore the main patterns of Behçet's disease (BD) expression, applying factor analysis. METHODS Sixty-eight BD patients were studied. The following disease manifestations were used for the factor analysis: genital ulcerations, typical skin lesions (erythema nodosum, folliculitis or papulo-pustular rash), uveitis, CNS involvement, joint disease, deep vein and superficial vein thrombosis, and gastrointestinal manifestations. The results were further analyzed according to sex, HLA typing, and childhood vs. adult-onset disease. RESULTS Five factors were derived, which accounted for 69% of the variance of the matrix. Factor 1 represented the association between folliculitis and genital ulceration. Factor 2 represented the association between papulo-pustular rash and gastrointestinal symptoms. Factor 3 represented the inverse association between superficial vein thrombosis and erythema nodosum. Factor 4 represented the correlation between deep vein thrombosis and neuro-Behçet. Factor 5 represented joint disease. No difference was found between males and females in relation to factors 1, 2 or 5, but factors 3 and 4 had higher scores in male patients (p = 0.1 and p = 0.07, respectively). Factor 3 was significantly higher in patients with HLA-B5, compared to HLA-B5-negative BD patients (p < 0.001). Factors 1 and 3 were higher in patients with adult onset of the disease (p = 0.07, and p = 0.003, respectively), while factor 2 was higher in patients with childhood-onset BD (p = 0.07). CONCLUSIONS The application of factor analysis revealed possible associations between distinct types of skin lesions, or venous thrombosis, and other disease manifestations of Behçet's syndrome, some of which were sex, age at onset, or HLA-related.
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Krause I, Uziel Y, Guedj D, Mukamel M, Molad Y, Amit M, Weinberger A. Mode of presentation and multisystem involvement in Behçet's disease: the influence of sex and age of disease onset. J Rheumatol 1998; 25:1566-9. [PMID: 9712102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE To evaluate the correlation between the age at onset of Behcet's disease (BD) and sex distribution, mode of disease appearance, and number of organs involved during the disease. METHODS BD was defined according to the International Study Group criteria. Data from medical files and from patient interviews were collected. Results were analyzed for children and adults, according to age at disease onset. A systemic involvement index was calculated as the sum of visceral organ systems involved. RESULTS Fifty-nine patients with BD were studied, 26 male and 33 female. The mean age at disease onset was 8.4 +/- 4.5 years in children and 29.8 +/- 7.9 years in adults. The age of onset was significantly lower in male versus female patients. BD presented in children almost entirely as recurrent aphthous stomatitis, while in adults, less than one-third of patients presented first with oral ulcers. The mean age at disease onset of patients who presented first with oral ulcers was significantly lower than the age of patients presenting first with non-oral aphthosis. The mean systemic involvement index was higher in adult onset than in juvenile onset disease. A significant linear correlation was found between age of disease onset and total number of visceral organ systems involved. CONCLUSION BD was observed to occur earlier in males than in females. The first manifestation of BD in children is almost exclusively in the form of oral ulcers, while older patients have a large proportion of non-oral aphthosis as their first disease manifestation. Disease onset at an older age is positively correlated with increased disease spectrum.
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Krause I, Shraga I, Molad Y, Guedj D, Weinberger A. Seasons of the year and activity of SLE and Behcet's disease. Scand J Rheumatol 1998; 26:435-9. [PMID: 9433403 DOI: 10.3109/03009749709065715] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Patients with systemic lupus erythematosus (SLE) were evaluated using a telephone questionnaire on the activity of various disease manifestations during the seasons of the past year. The results were compared to those of patients with Behcet's disease (BD), using the same questionnaires, and analyzed in relation to the mean temperature, humidity, barometric pressure, and ultraviolet radiation (UVR) in the patient's location, obtained from the official Israeli Meteorological Service. It was found that SLE patients had a tendency towards winter worsening of clinical manifestations, shown as increased incidence of joint pains, weakness, fatigue, Raynaud's phenomenon, and rash, as well as increased number of hospital admissions, sick leaves, and need to raise the dose of medications. The symptoms of patients with BD were not correlated to seasons of the year, except for increased joint pains in autumn and spring. We suggest that UVR accumulation might cause exacerbations in SLE patients several months after prolonged exposure to sunlight in the summer.
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Weinberger A. The contribution of the Rabin Medical Center to the field of rheumatology. BRITISH JOURNAL OF RHEUMATOLOGY 1997; 36:1135-6. [PMID: 9374942 DOI: 10.1093/rheumatology/36.10.1135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Vogel U, Weinberger A, Frank R, Müller A, Köhl J, Atkinson JP, Frosch M. Complement factor C3 deposition and serum resistance in isogenic capsule and lipooligosaccharide sialic acid mutants of serogroup B Neisseria meningitidis. Infect Immun 1997; 65:4022-9. [PMID: 9317002 PMCID: PMC175578 DOI: 10.1128/iai.65.10.4022-4029.1997] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Serogroup B meningococci express sialic acids on their surfaces as a modification of the lipooligosaccharide (LOS) and as capsular material consisting of alpha2,8-linked sialic acid homopolymers. The aim of this study was to elucidate the impact of each sialic acid component on the deposition of complement factor C3 and serum resistance. For this purpose, we used isogenic mutants deficient in capsule expression (a polysialyltransferase mutant) or sialylation of the LOS (a galE mutant) or both (a mutant with a deletion of the cps gene locus). Bactericidal assays using 40% normal human serum (NHS) demonstrated that both the capsule and LOS sialic acid are indispensable for serum resistance. By immunoblotting with monoclonal antibody MAb755 that is specific for the C3 alpha-chain, we were able to demonstrate that C3 from 40% NHS was covalently linked to the surface structures of meningococci as C3b and iC3b, irrespective of the surface sialic acid compounds. However, C3b linkage was more pronounced and occurred on a larger number of target molecules in galE mutants with nonsialylated LOS than in meningococci with wild-type LOS, irrespective of the capsule phenotype. C3b deposition was caused by both the classical pathway (CP) and the alternative pathway of complement activation. Use of 10% NHS revealed that at low serum concentrations, C3 deposition occurred via the CP and was detected primarily on nonsialylated-LOS galE mutants, irrespective of the capsular phenotype. Accordingly, immunoglobulin M (IgM) binding to meningococci from heat-inactivated NHS was demonstrated only in both encapsulated and unencapsulated galE mutants. In contrast, inhibition of IgA binding required both encapsulation and LOS sialylation. We conclude that serum resistance in wild-type serogroup B meningococci can only be partly explained by an alteration of the C3b linkage pattern, which seems to depend primarily on the presence of wild-type LOS, since a serum-resistant phenotype also requires capsule expression.
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Weinberger A. Human lymphocyte antigen (HLA) B51 is more frequent in patients with recurrent aphthous stomatitis (RAS). Clin Exp Rheumatol 1997; 15:118-9. [PMID: 9093788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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82
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Golan TD, Sigal D, Sabo E, Shemuel Z, Guedj D, Weinberger A. The penetrating potential of autoantibodies into live cells in vitro coincides with the in vivo staining of epidermal nuclei. Lupus 1997; 6:18-26. [PMID: 9116714 DOI: 10.1177/096120339700600103] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We have previously demonstrated that IgG autoantibodies derived from SLE patients are capable of penetrating into nuclei of living COLO-16 cells, in vitro. To address the possible correlation in Lupus Erythematosus (LE) between the in vivo ANA binding to nuclei of epidermal cells and the presence of intranuclear penetrating antibodies in sera of those patients, 25 consecutive patients were studied. Out of 25 skin biopsies, 11 specimens (8 of SLE and 3 of DLE) showed by immunofluorescent microscopy extensive in vivo presence of IgG in epidermal nuclei, whereas all sera of these patients stained nuclei of living COLO-16 cells, in vitro. Such penetration was also observed in additional 6/25 sera of patients, but with in vivo negative biopsies. This in vitro nuclear binding, which was unrelated to clinical symptoms of patients or their serological autoantibody profile and titer, was reproduced following cross-linking of intracellular protein by PLP fixation. Likewise, western blotting (immunoblotting) analysis, demonstrated the intranuclear presence of IgG in all in vitro intranuclear IgG staining sera. Furthermore, this in vitro presence, which neither affects cell viability nor DNA synthesis, is time-dependent and of a transient nature: nuclear staining disappears within 48 h following removal of the penetrating sera from medium. In conclusion, since the COLO-16 in vitro assay mirrors exactly the in vivo situation, and because of its higher sensitivity, it provides an excellent tool for the study of non-degraded autoantibody penetration into the nuclei of living cells.
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Weinberger A, Nyska A, Giler S. Treatment of experimental inflammatory synovitis with continuous magnetic field. ISRAEL JOURNAL OF MEDICAL SCIENCES 1996; 32:1197-201. [PMID: 9007153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The effect of a magnetic field on synovitis in rats was studied. Synovitis was induced by bilateral intraarticular injection of zymosan to the hind joints. One group of rats was held in a cage with a magnet of 3,800 Gauss on the bottom of the cage (treated), while another group was held in a cage without a magnet (control). Three weeks following intraarticular zymosan injection all rats were killed and the hind joints tissues were examined histologically. The pathologic process was noted and graded according to the involvement of various tissue components, number of inflammatory foci, and size of the lesion. The histologic findings of the tissues from the control group consisted of marked articular infiltrate, composed of lymphocytes and plasma cells with some histocytes in 80% of the animals. A small articular infiltration of the same nature was observed in 20% of the treated rats. The inflammatory score was 3.4 +/- 1.1 in the treated animals and 6.8 +/- 2.6 in the control group (P = 0.002). These data showed that synovitis and the inflammatory process are significantly suppressed by a magnetic field.
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84
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Shapira Y, Weinberger A, Wysenbeek AJ. Lymphadenopathy in systemic lupus erythematosus. Prevalence and relation to disease manifestations. Clin Rheumatol 1996; 15:335-8. [PMID: 8853165 DOI: 10.1007/bf02230354] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Lymphadenopathy (LAP) is a frequent sign in systemic lupus erythematosus (SLE). Yet, data concerning its relation to the various disease manifestations are scarce or absent. LAP was present in 23/90 (26%) SLE patients. Patients with LAP had significantly more constitutional symptoms of fatigue, fever and weight loss, more cutaneous symptoms and signs, a higher rate of hepatomegaly and splenomegaly, increased anti-dsDNA antibodies and decreased complement levels. Disease activity index was higher among patients with LAP, as was the intake of steroids and antimalaria medications. There was no difference in renal or central nervous system (CNS) involvement between patients with LAP and those without LAP.
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Ziporen L, Goldberg I, Arad M, Hojnik M, Ordi-Ros J, Afek A, Blank M, Sandbank Y, Vilardell-Tarres M, de Torres I, Weinberger A, Asherson RA, Kopolovic Y, Shoenfeld Y. Libman-Sacks endocarditis in the antiphospholipid syndrome: immunopathologic findings in deformed heart valves. Lupus 1996; 5:196-205. [PMID: 8803890 DOI: 10.1177/096120339600500306] [Citation(s) in RCA: 98] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To examine the potential immunologic mechanism and involvement of antiphospholipid antibodies in the pathogenesis of heart valve lesions in patients with the antiphospholipid syndrome (APS). METHODS Immunoperoxidase and immunofluorescence staining methods were used to evaluate 13 heart valve specimens derived from eight patients with the APS, either primary or secondary to systemic lupus erythematosus. Primary antibodies to human immunoglobulins, complement components, serum albumin and a monoclonal anti-idiotypic antibody to human anticardiolipin antibodies (aCL) were employed. Various tissue specimens from a patient with the APS as well as deformed and normal valves from subjects without the APS were used as controls. RESULTS Linear subendothelial deposition consisting of immunoglobulins with complement components but not of a non-specific serum protein was found in deformed valves from patients with the APS. None of the control valves or tissues disclosed similar deposition. The same pattern and location of staining was obtained by the anti-idiotypic antibody to aCL. A significant amount of IgG immunoglobulins that bound to cardiolipin was eluted from a valve of a patient with secondary APS. CONCLUSION Deposits of immunoglobulins including aCL, and of complement components, are common in affected valves of patients with primary and secondary APS. Such deposits may be involved in the pathogenesis of valvular lesions.
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Weinberger A, Ben-Gal T, Roizman P, Abramovici A. Intraarticular minocycline injection in experimental synovitis. Clin Rheumatol 1996; 15:290-4. [PMID: 8793263 DOI: 10.1007/bf02229710] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Minocycline, a semi-synthetic tetracycline, was injected into one hind joint of twenty-two rabbits with zymosan-induced arthritis, while the contralateral joint served as a control. A local inflammatory reaction was observed a few days after the zymosan injection. Most clinical parameters such as knee diameter, systemic temperature, sedimentation rate and blood cell count did not change throughout the experiment both in control and minocycline treated rabbits. However, the zymosan platelet counts rose from 3.4x10(5)/microL to 5x10(5)/microL, as well as the level of serum fibrinogen (from 99 mg% to 370 mg%). Microscopically, a perivascular infiltrate consisting of lymphocytes and polymorphonuclear cells was seen. Lymphoid follicles as well as plasma cells epitheloid and giant cells were also observed. A mild tendency to fibrosis and lesser inflammatory reaction in the minocycline treated knees was noted. Our data suggest that intraarticular minocycline treatment did not alleviate the course of the rheumatoid-like inflammatory reaction of the knee joint.
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Asherson RA, Weinberger A, Kinsley RH. Radial artery occlusion in primary antiphospholipid syndrome after aortic valve replacement. S Afr Med J 1995; 85:1042. [PMID: 8596982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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Abstract
Serum triglyceride levels are significantly higher and serum high-density lipoprotein cholesterol levels are lower in patients with gout compared with healthy individuals. Whereas increased serum triglyceride levels exist intrinsically in gout, serum uric acid concentration correlates inversely with insulin sensitivity and positively with serum triglycerides. Interaction of monosodium urate crystals with granulocyte-macrophage colony-stimulating factor and with tumor necrosis factor-activated neutrophils favored the production of interleukin-1 over that of interleukin-1-Ra, resulting in a proinflammatory imbalance. Interaction of the crystals with iron or tyrosine kinase may modify their inflammatory response and can be an important modulating mechanism in gouty arthritis. E-selectin is a specific marker for synovial fluid soluble endothelial activity and is increased in the synovial fluid of patients with gouty arthritis, as well as in that of patients with other inflammatory arthritides. Similarly, E-selectin was found to be high in joints with monosodium urate crystal-induced synovitis. In addition, synovial fluid levels of interleukin-8 were found to be high in gout, rheumatoid arthritis, and osteoarthritis.
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Yosipovitch G, Shohat B, Bshara J, Wysenbeek A, Weinberger A. Elevated serum interleukin 1 receptors and interleukin 1B in patients with Behçet's disease: correlations with disease activity and severity. ISRAEL JOURNAL OF MEDICAL SCIENCES 1995; 31:345-8. [PMID: 7607852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Soluble interleukin 2 receptor (SIL-2R) and interleukin 1-B (IL-1B) levels in peripheral blood were assayed by enzyme-linked immunoabsorbent method in 25 patients with Behçet's disease and in 20 healthy controls. Eighteen patients suffered from active Behçet's disease and 6 patients had severe disease manifestations. SIL-2R levels were followed for a period of 16 months and were correlated with disease activity. In all the patients with Behçet's disease the levels of SIL-2R and IL-1B were significantly higher than their control, 958 +/- 712 vs. 404 +/- 119 u/ml (P < 0.001) for SIL-2R and 639 +/- 741 vs. 59 +/- 53 pg/ml (P < 0.001) for IL-1B. No correlation was found between disease activity and severity and the levels of SIL-2R and IL-1B. It is suggested that levels of SIL-2R and IL-1B are elevated in patients with Behçet's disease but do not serve as disease activity markers.
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Rosen R, Tomer Y, Carel R, Weinberger A. Serum 17-beta-estradiol and testosterone levels in asymptomatic hyperuricaemic men. Clin Rheumatol 1994; 13:219-23. [PMID: 8088062 DOI: 10.1007/bf02249015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Low levels of oestrogen, FSH and LH in serum have been reported in patients with gout. The mechanism by which sex hormones affect the development of gout is unknown, but some investigators believe that it is related to the influence of oestrogens on serum uric acid levels. We studied the relationship between serum uric acid and 17 beta oestradiol (ES) levels in asymptomatic hyperuricaemic (ASH) men in order to test the hypothesis that low ES levels are associated with hyperuricaemia. Thirty-eight men with asymptomatic hyperuricaemia (ASH) were selected from a population of healthy individuals undergoing periodical multiphasic health examinations. After adjusting for the differences in albumin levels between the two groups, no significant difference in serum ES level was found. The serum testosterone levels were similar in both groups. These findings suggest that there is no difference in the sex hormone profiles between asymptomatic hyperuricaemic and normouricaemic men.
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Arber N, Vaturi M, Schapiro JM, Jelin N, Weinberger A. Effect of weather conditions on acute gouty arthritis. Scand J Rheumatol 1994; 23:22-4. [PMID: 8108663 DOI: 10.3109/03009749409102130] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
82 patients were retrospectively evaluated for the effects of maximal and minimal temperatures, barometric pressure, wet and dry temperatures and heat stress on the five consecutive days preceding an acute gouty attack. Maximal temperature on day four preceding the attack was higher than the monthly mean [p < 0.01], the fifth day's lower than the monthly mean minimal temperature [p < 0.05], and the mean barometric pressure of the fifth day before the attack higher then the monthly mean [p < 0.02]. On day four before the acute gouty arthritic attack heat stress was significantly higher than the mean monthly heat stress [p < 0.03]. The same findings were noted between the difference of the fifth night wet and fourth night dry temperatures, which were higher than those on the day of the attack [p < 0.05 and p < 0.03 respectively]. These weather changes were not specific to a certain month. Weather changes which occur four to five days before an acute gouty attack may play a significant role in precipitating the attack.
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Wysenbeek AJ, Leibovici L, Weinberger A, Guedj D. Fatigue in systemic lupus erythematosus. Prevalence and relation to disease expression. BRITISH JOURNAL OF RHEUMATOLOGY 1993; 32:633-5. [PMID: 8339141 DOI: 10.1093/rheumatology/32.7.633] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Significant fatigue was observed in 63/83 (76%) SLE patients. Patients with fatigue had significantly lower lymphocyte counts (1090 +/- 60 vs 1675 +/- 205 cells/mm3 P = 0.003), and higher ratings for headache, nervousness and musculoskeletal symptoms and signs. These disease parameters also correlate significantly with the magnitude of fatigue. Fatigue correlated with disease activity index (r = 0.49 P < 0.001).
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Wysenbeek AJ, Leibovici L, Weinberger A, Guedj D. Expression of systemic lupus erythematosus in various ethnic Jewish Israeli groups. Ann Rheum Dis 1993; 52:268-71. [PMID: 8484692 PMCID: PMC1005624 DOI: 10.1136/ard.52.4.268] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
OBJECTIVES To assess the expression of systemic lupus erythematosus (SLE) in Jewish Israeli patients according to ethnic origin. METHODS Eighty four patients with SLE were divided into groups according to origin and compared for history, physical examination, and laboratory variables. RESULTS Patients of Sephardic origin had more serious disease manifestations than Ashkenazi patients in 60 of the 76 variables examined. They had significantly worse muscle pain, alopecia, and cutaneous vasculitis, higher antibodies to DNA and erythrocyte sedimentation rate, and significantly lower complement and leucocytes. Sephardic patients were divided into subgroups according to country: Mediterranean area, Iran-Iraq-India, and Yemen. All three subgroups had more serious disease manifestations than the Ashkenazi group, and the Yemenite patients had the most serious manifestations among the Sephardic subgroups. The Sephardic patients had a significantly lower education level, but only origin, and not education level or age, was significantly related to disease manifestations on multivariate analysis. CONCLUSION More serious manifestations of SLE are found among Jewish patients of Sephardic origin, but these are not related to level of education or age.
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Yosipovitch G, Shohat B, Bshara J, Wysenbeek A, Weinberger A. P 129 Elevated serum interleukin 2 receptors and interleukin 1B in patients with Behçet's disease. Correlations with disease activity and severity. Rev Med Interne 1993. [DOI: 10.1016/s0248-8663(05)82431-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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95
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Yosipovitch G, Weinberger A, Shochat B. Negative seroactivity to HTLV-1 in Sephardic Jews and Arabs with Behçet's disease. J Rheumatol 1992; 19:1822-3. [PMID: 1362780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
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96
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Shohat-Zabarski R, Kalderon S, Klein T, Weinberger A. Close association of HLA-B51 in persons with recurrent aphthous stomatitis. ORAL SURGERY, ORAL MEDICINE, AND ORAL PATHOLOGY 1992; 74:455-8. [PMID: 1408019 DOI: 10.1016/0030-4220(92)90294-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The HLA typing profile of 26 Israeli subjects with recurrent aphthous stomatitis (RAS) was examined and compared with that of 100 healthy control subjects. HLA-B51 was found in six subjects (23%) with RAS and in nine control subjects (9%) (p < 0.05). HLA-Cw7 was found in six subjects with RAS (23%) and in five control subjects (5%) (p < 0.01). Eleven subjects had first-degree relatives who had RAS. Because a high frequency of HLA-B51 has been found in Behcet's syndrome and aphthous stomatitis is part of this syndrome, it is suggested that in some subjects with RAS the entire syndrome may actually develop in the future.
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97
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Wysenbeek AJ, Leibovici L, Amit M, Weinberger A. Disease patterns of patients with systemic lupus erythematosus as shown by application of factor analysis. J Rheumatol 1992; 19:1096-9. [PMID: 1512764] [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
Clinical and laboratory test data of 77 patients with systemic lupus erythematosus (SLE) were evaluated by factor analysis. Six factors representing disease patterns were extracted: cutaneous symptoms of alopecia, malar rash, rash and photosensitivity; renal involvement; the anticoagulant syndrome of phlebitis and partial thromboplastic time inversely related to platelet count; lymphopenia; viral or fibromyalgia symptoms of headache, nervousness, joint and muscle pain; and serology of anti-DNA antibodies and complement inversely related. Application of factor analysis reveals various clinical presentations of SLE.
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98
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Wysenbeek AJ, Guedj D, Amit M, Weinberger A. Rash in systemic lupus erythematosus: prevalence and relation to cutaneous and non-cutaneous disease manifestations. Ann Rheum Dis 1992; 51:717-9. [PMID: 1616352 PMCID: PMC1004732 DOI: 10.1136/ard.51.6.717] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Rash is a common cutaneous sign in patients with systemic lupus erythematosus (SLE) but no data regarding its prevalence or relation to disease manifestations are known, possibly due to the fact that it is a common but non-specific sign. Rash was present in 48/81 (59%) patients with SLE. Patients with rash had more cutaneous symptoms and signs, lymphadenopathy, increased levels of antibodies to double stranded DNA and decreased complement levels. They were also receiving a higher dose of prednisone. There was no difference between patients with and without rash with respect to renal or central nervous system disease. Rash did not correlate with the disease activity index and clinical parameters of disease exacerbation.
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99
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Molad Y, Sidi Y, Gornish M, Lerner M, Pinkhas J, Weinberger A. Lupus anticoagulant: correlation with magnetic resonance imaging of brain lesions. J Rheumatol 1992; 19:556-61. [PMID: 1593577] [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
Brain magnetic resonance imaging (MRI) was performed in 21 patients with systemic lupus erythematosus (SLE) with and without lupus anticoagulant (LAC), one lupus-like patient and 5 patients with primary antiphospholipid antibody syndrome. Thirteen patients had white matter focal brain lesions on MRI, 10 of whom had LAC (p = 0.03). We found no correlation between these lesions and neurologic manifestations, nor any clinical or serologic indices of activity of SLE. Our MRI lesions were similar to those described in multiple sclerosis and may indicate a similar pathologic process.
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Abstract
Finger clubbing is a striking clinical sign associated with a large variety of diseases and syndromes. Although clubbing is poorly understood, we hypothesise that there is a final common pathway in the pathogenesis of clubbing by which there is increased growth of connective tissue and augmented blood flow mediated or stimulated by cytokines, which are either over-produced or poorly eliminated.
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