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עמוד בית
Fri, 22.11.24

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January 2015
Daniel Elbirt MD, Keren Mahlab-Guri MD, Shira Bazalel-Rosenberg MD, Harpreet Gill BHSc, Malka Attali MD and Ilan Asher MD
August 2014
Daniel Elbirt MD*, Ilan Asher MD*, Keren Mahlab-Guri MD, Shira Bezalel-Rosenberg MD, Victor Edelstein MD and Zev Sthoeger MD

Background: Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by disturbance of the innate and adaptive immune systems with the production of autoantibodies by stimulated B lymphocytes. The BLyS protein (B lymphocyte stimulator) is secreted mainly by monocytes and activated T cells and is responsible for the proliferation, maturation and survival of B cells.

Objectivs: To study sera BLyS level and its clinical significance in Israeli lupus patients over time.

Methods: The study population included 41 lupus patients (8 males, 33 females; mean age 35.56 ± 15.35 years) and 50 healthy controls. The patients were followed for 5.02 ± 1.95 years. We tested 221 lupus sera (mean 5.4 samples/patient) and 50 normal sera for BLyS levels by a capture ELISA. Disease activity was determined by the SLEDAI score.

Results: Sera BLyS levels were significantly higher in SLE patients than in controls (3.37 ± 3.73 vs. 0.32 ± 0.96 ng/ml, P < 0.05). BLyS levels were high in at least one sera sample in 80.5% of the patients but were normal in all sera in the control group. There was no correlation between sera BLyS and anti-ds-DNA autoantibody levels. BLyS levels fluctuated over time in sera of lupus patients with no significant correlation to disease activity.

Conclusions: Most of our lupus patients had high sera BLyS levels, suggesting a role for BLyS in the pathogenesis and course of SLE. Our results support the current novel approach of targeting BLyS (neutralization by antibodies or soluble receptors) in the treatment of active lupus patients.

April 2014
Shira Bezalel MD, Keren Mahlab Guri MD, Daniel Elbirt MD, Ilan Asher MD and Zev Moshe Sthoeger MD
 Type I interferons (IFN) are primarily regarded as an inhibitor of viral replication. However, type I IFN, mainly IFNα, has a major role in activation of both the innate and adaptive immune systems. Systemic lupus erythematosus (SLE) is a chronic, multi-systemic, inflammatory autoimmune disease with undefined etiology. SLE is characterized by dysregulation of both the innate and the adaptive immune systems. An increased expression of type I IFN-regulated genes, termed IFN signature, has been reported in patients with SLE. We review here the role of IFNα in the pathogenesis and course of SLE and the possible role of IFNα inhibition as a novel treatment for lupus patients.

October 2012
Z. Sthoeger, I. Asher, S. Rosenberg-Bezalel and K. Mahlab-Guri
September 2012
S. Shulman, D. Goldenberg, Z. Habot-Wilner, M. Goldstein, and M. Neudorfer

Background: Acute, as opposed to chronic, anterior uveitis is rarely associated with macular or optic nerve  edema. Nevertheless, mild changes may not be visible on examination.

Objectives: To implement non-invasive ocular coherence tomography (OCT) for obtaining quantitative and qualitative data in the assessment of changes in macular morphology and peripapillary retinal nerve fiber layers in eyes with acute anterior uveitis.

Methods: This retrospective case-control study was conducted in patients with unilateral acute anterior uveitis lasting for up to one month. Patients with evidence of other ocular disease or who had undergone intraocular surgery were excluded. We reviewed the charts of 14 consecutive patients who were diagnosed with acute unilateral anterior uveitis between 2007 and 2008 at the Tel Aviv Medical Center. Data on demographic details, ophthalmic examination, macular thickness and peripapillary retinal nerve fiber layer (RNFL) thickness (as demonstrated by OCT) were retrieved. Retinal and RNFL thickness was compared between the healthy fellow eye (control) and the uveitic eye in the central and four perifoveal quadrant regions, and RNFL thickness was compared in the mean and four quadrant values by Student’s t-test.

Results: We evaluated 28 eyes of 7 males and 7 females (mean age 37.7 years, range 20–65). The diagnoses were: idiopathic in five patients, ankylosing spondylitis in five, Crohn’s disease in one patient and reactive arthritis in one. Nine patients were HLA-B27 positive. The retina and the peripapillary NFL in each area were thicker in the uveitic eyes compared to the controls. The difference was statistically significant. There was no correlation between the differences in OCT values and patients’ demographic characteristics.

Conclusions: OCT demonstrated that eyes with acute anterior uveitis had thicker maculae and thicker peripapillary RNFL than controls. This finding suggests that even milder anterior uveitis may be associated with some degree of posterior segment manifestations.

 
 

July 2012
E. Baharav and A. Weinberger
Background: The human lymphocyte antigen (HLA) molecule B*5101 is a functioning receptor of the immune system and is generally accepted as a genetic marker for Behçet disease (BD), a multi-organ, chronic inflammatory disorder. The role of the HLA-B*5101 in the pathogenesis of BD is elusive. The assumption that HLA-B*5101 has an active role in BD is suggestive, but no antigen has yet been identified.

Objectives: To evaluate the potential binding capacity of various antigens to the HLA-B*5101 molecule.

Methods: Using bioinformatics programs, we studied the binding capacity of HLA-B*5101 and its corresponding rat molecule RT.A1 to the following antigens: heat shock protein-60 (HSP-60), major histocompatibility complex class I chain-related gene A (MICA), retinal S-antigen (S-Ag), HLA-B-27 molecule and its peptide (PD) and tropomyosin (TPM), all of which serve as antigens in animal models corresponding to BD.

Results: In each protein including the B*5101 molecule itself, the computerized programs revealed several short sequences with potential high binding capacity to HLA-B*5101 with the exception of B-27PD. The rat MHC RT1.Al had no binding capacity to S-Ag.

Conclusions: The evaluated proteins have the potential to bind to and to serve as potential antigens to the HLA-B*5101 and the rat MHC RT1.Al molecules. The pathogenicity of these suggested short peptides should be evaluated in animal models of BD.
February 2012
L. Nesher, K. Riesenberg, L. Saidel-Odes, F. Schlaeffer and R. Smolyakov
Background: The southern region of Israel has recently experienced an influx of African refugees from the Eastern Sub-Sahara desert area. These influxes led to a significant increase in incidence of tuberculosis (TB) in that region.

Objectives: To review the data of African refugees diagnosed with TB between January 2008 and August 2010 at a tertiary care regional hospital.

Results: Twenty-five TB cases were diagnosed, 22 of which presented with pulmonary TB, 3 with  extra-pulmonary TB (EPTB), and 7 with combined pulmonary and EPTB. Only one case had concomitant human immunodeficiency virus (HIV) infection and multidrug-resistant TB. Fifteen patients underwent extensive radiological investigations including chest, abdominal and spine computed tomography, 1 was reviewed by magnetic resonance imaging, and 9 underwent tissue biopsy. Eighteen patients were admitted as suspected TB and 4 as suspected pneumonia or pulmonary infiltrates that could have been defined as suspected TB. All 24 HIV-negative cases were sensitive to first-line drugs for TB except one case that was resistant to streptomycin and one to rifampicin. All patients responded well to first-line therapy. The average duration of hospitalization was 8.7 days (range 1–36). Following diagnosis 23 patients were transferred to a quarantine facility.

Conclusions: We identified overutilization of medical resources and invasive procedures. For African refugees from the eastern Sub-Sahara who were HIV-negative and suspected of having TB, a sputum acid-fast smear and culture should have been the primary investigative tools before initiating treatment with four drugs (first-line), and further investigations should have been postponed and reserved for non-responders or for patients for whom the culture was negative. Physicians should maintain a high index of suspicion for EPTB in this population.
November 2011
A. Bleich, Y. Baruch, S. Hirschmann, G. Lubin, Y. Melamed, Z. Zemishlany and Z. Kaplan

Suicide is universal within the range of human behaviors and is not necessarily related to psychiatric morbidity, though it is considerably more prevalent among psychiatric patients. Considering the limitations of medical knowledge, psychiatrists cope with an unfounded and almost mythical perception of their ability to predict and prevent suicide. We set out to compose a position paper for the Israel Psychiatric Association (IPA) that clarifies expectations from psychiatrists when treating suicidal patients, focusing on risk assessment and boundaries of responsibility, in the era of defensive medicine. The final draft of the position paper was by consensus. The IPA Position Paper established the first standard of care concerning expectations from psychiatrists in Israel with regard to knowledge-based assessment of suicide risk, elucidation of the therapist's responsibility to the suicidal psychotic patient (defined by law) compared to patients with preserved reality testing, capacity for choice, and responsibility for their actions. Therapists will be judged for professional performance rather than outcomes and wisdom of hindsight. This paper may provide support for psychiatrists who, with clinical professionalism rather than extenuating considerations of defensive medicine, strive to save the lives of suicidal patients.
 

January 2011
L. Leibenson, S. Banani, A. Borer, M. Meirovitz, Y. Shemer Avni, D. Singer, F. Schlaeffer, M. Leibenson, T. Silberstein, A. Wiznitzer and K. Riesenberg

Background: Concomitant human immunodeficiency virus and human papillomavirus infection increases both HPV[1] persistence and the risk of invasive cervical cancer. An estimation of HPV prevalence among HIV[2]-positive women in Israel would contribute to improving care for this population and preventing morbidity and mortality related to cervical cancer.

Objectives: To determine the prevalence of HPV infection and cervical cytology abnormalities, and to assess the possible influence of HIV infection on HPV carriage in HIV-positive women attending the Infectious Disease Clinic at Soroka University Medical Center.

Methods: The study population included 84 HIV-seropositive women. They were examined by a gynecologist and screened for HPV genotyping, and Pap smears were obtained for cervical cytology. Demographic, behavioral, and HIV infection variables were also recorded and analyzed.

Results: Forty-nine (58.3%) of the study participants were HPV-positive; 34 of them had oncogenic genotypes. Young age (< 16 years) at first sexual intercourse was the only variable significantly associated with HPV infection (P < 0.05). Abnormal cervical cytology was present in 17 women (20.3%); 21 women were referred to colposcopy, which was abnormal in 9 (10.7%).

Conclusions: The prevalence of HPV carriage among HIV-positive woman in our study was slightly higher than published elsewhere. The prevalence of pathological cervical cytology was much higher than in the general population. An extremely high prevalence of pathological colposcopies requiring further treatment was found. Screening for HPV and premalignant changes in the uterine cervix is highly recommended in the HIV-seropositive population. We suggest that colposcopy be considered part of the routine workup in HIV-seropositive woman.






[1] HPV = human papillomavirus



[2] HIV = human immunodeficiency virus


December 2010
S. Lurie, H. Asaala, O. Schwartz Harari, A. Golan and O. Sadan

Background: Although the presence of bacteria in the cervix is not a sign of disease, the majority of pathogens involved in pelvic inflammatory disease originate from this "normal" flora.

Objectives: To assess the distribution of cervical non-gonococcal and non-chlamydial bacteria in hospitalized women with PID[1] and the bacteria's antibiotic sensitivity.

Methods: We retrospectively evaluated the cultures obtained from the uterine cervix over a 1 year period (2008) at Wolfson Medical Center, Holon. The distribution of cervical non-gonococcal and non-chlamydial bacteria in women with PID and the bacteria's antibiotic sensitivity was compared to that in our previous 1 year study that was performed at Kaplan Medical Center, Rehovot (1988–89). 

Results: In 2008, a total of 412 cultures were obtained of which 126 (30.5%) were sterile. The prevalence of negative cultures was similar in 2008 and in 1988, namely, 30.5% and 33.7%, respectively (P = 0.23). PID was finally diagnosed in 116 patients with positive cultures. The most prevalent bacteria in the 2008 study were Enterococcus species and Escherichia coli – 24.0 % and 26.4% respectively compared to 18.0% and 38.1% in the 1988 study, with the decrease in E. coli isolates being significant (P = 0.0003). In 2008 the antimicrobial sensitivity for various antibiotics ranged from 44.3% to 100.0% (median 90.2%) while in 1988 it ranged from 2.9% to 80.1% (median 51.9%).

Conclusions: The cervical bacterial flora in hospitalized women with PID did not vary significantly between 1988 and 2008. However, antimicrobial sensitivity of the isolated bacteria increased dramatically, probably due to a decrease in resistance to antibiotics.






[1] PID = pelvic inflammatory disease


September 2008
January 2008
Y. Shoenfeld, B. Gilburd, M. Abu-Shakra, H. Amital, O. Barzilai, Y. Berkun, M. Blank, G. Zandman-Goddard, U. Katz, I. Krause, P. Langevitz, Y. Levy, H. Orbach, V. Pordeus, M. Ram, Y. Sherer, E. Toubi and Y. Tomer
A. Kapitany, Z. Szabo, G. Lakos, N. Aleksza, A. Vegvari. L. Soos, Z. Karanyi, S. Sipka, G. Szgedi and Z. Szekanecz


Background: The presence of anti-cyclic citrullinated peptide autoantibody is highly specific for rheumatoid arthritis. Certain HLA-DR4 (HLA-DRB1*04) alleles, also known as the "shared epitope," are associated with increased susceptibility to RA[1]. In addition, these alleles may also have relevance for disease outcome. Anti-CCP[2] antibody positivity has been associated with the presence of HLA-DR4 alleles in patients with RA. However, there is little information available regarding any relationship between quantitative anti-CCP production (serum anti-CCP concentrations) and the shared epitope.

Objectives: To determine the association between anti-CCP antibody production and various HLA-DRB1 alleles.

Methods: Serum anti-CCP, rheumatoid factor and C-reactive protein levels were assessed in 53 RA patients. All these patients underwent HLA-DRB1 genotyping.

Results: Of the 53 patients 33 (62%) were positive for anti-CCP antibody. We found significant correlations between anti-CCP and RF[3] positivity (chi-square = 6.717, P < 0.01), as well as between anti-CCP and HLA-DRB1*04 positivity (chi-square = 5.828, P < 0.01). There was no correlation between RF positivity and serum levels, CRP[4] serum levels and HLA-DRB1*04 positivity. When quantitatively comparing serum anti-CCP levels with shared epitope positivity, patients carrying one or two copies of HLA-DRB1*04 alleles had significantly higher anti-CCP concentrations (530.0 ± 182.6 U/ml) compared to DRB1*04-negative patients (56.8 ± 27.4 U/ml) (P < 0.01). There was no difference in serum anti-CCP antibody concentrations between patients carrying only one HLA-DRB1*01 allele but no HLA-DRB1*04 allele (12.0 ± 8.6 U/ml) in comparison to SE[5]-negative patients (76.8 ± 56.2 U/ml). Regarding non-SE HLA-DRB1 genotypes, all 6 patients (100%) carrying DRB1*15 alleles and 6 of 7 (85%) patients carrying DRB1*13 were anti-CCP positive. In addition, patients with HLA-DRB1*13 (282.5 ± 23.8 U/ml) and DRB1*15 (398.7 ± 76.2 U/ml) produced significantly more anti-CCP than did any other non-SE HLA-DRB1 subtypes (P < 0.01).

Conclusions: There is significant association between anti-CCP and RF, as well as between anti-CCP and SE positivity in RA. In addition, the presence of one or two copies of HLA-DRB1*04 alleles has been associated with higher serum anti-CCP antibody levels. Thus, patients carrying HLA-DRB1*04 alleles exhibited an overall tenfold increase in serum anti-CCP antibody levels in comparison to HLA-DRB1*04-negative subjects. Increased anti-CCP production may also be associated with other non-SE HLA-DRB1 genotypes, such as DRB1*13 or DRB1*15. In reports by other investigators, both anti-CCP concentrations






[1] RA = rheumatoid arthritis

[2] anti-CCP = anti-cyclic citrullinated peptide

[3] RF = rheumatoid factor

[4] CRP = C-reactive protein

[5] SE = shared epitope


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