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עמוד בית
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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
February 2012
L.V. Lage, J.F. de Carvalho, M.T.C. Caleiro, N.H. Yoshinari, L.M.H. da Mota, M.A Khamashta and W. Cossermelli

Background: Antibodies directed against endothelial cell surface antigens have been described in many disorders and have been associated with disease activity. Since the most prominent histopathologic feature in mixed connective tissue disease (MCTD) is the widespread and unique proliferative vascular lesion, our aim was to evaluate the frequency of anti-endothelial cell antibodies (AECA) in this condition.

Objectives: To evaluate the frequency of AECA in this disease and assess its clinical and laboratory associations.

Methods: Seventy-three sera from 35 patients with MCTD (Kasukawa’s criteria), collected during a 7 year period, were tested for immunoglobulins G and M (IgG and IgM) AECA by cellular ELISA, using HUVEC (human umbilical vein endothelial cells). Sera from 37 patients with systemic lupus erythematosus (SLE), 22 with systemic sclerosis (SSc) and 36 sera from normal healthy individuals were used as controls. A cellular ELISA using HeLa cells was also performed as a laboratory control method.

Results: IgG-AECA was detected in 77% of MCTD patients, 54% of SLE patients, 36% of SSc patients and 6% of normal controls. In MCTD, IgG-AECA was associated with vasculitic manifestations, disease activity and lymphopenia, and was also a predictor of constant disease activity. Immunosuppressive drugs were shown to reduce IgG-AECA titers. Since antibodies directed to HeLa cell surface were negative, AECA was apparently unrelated to common epitopes present on epithelial cell lines.

Conclusions: AECA are present in a large proportion of patients with MCTD and these antibodies decrease after immunosuppressive treatment.


 
June 2011
A. Schlez, I. Litmanovitz, S. Bauer, T. Dolfin, R. Regev and S. Arnon

Background: Music therapy has been recommended as an adjuvant therapy for both preterm infants and mothers during their stay in the neonatal intensive care unit (NICU), and has been shown to have beneficial effects.

Objectives: To study the usefulness of combining live harp music therapy and kangaroo care (KC) on short-term physiological and behavioral parameters of preterm infants and their mothers in the NICU setting.

Methods: Included in this study were stable infants born between 32 and 37 weeks of gestation, with normal hearing .Mother-infant dyads were randomly assigned to KC and live harp music therapy or to KC alone. Using repeated measures, neonatal and maternal heart rate, oxygen saturation and respiratory rate were recorded along with neonatal behavioral state and maternal anxiety state. Maternal age, ethnicity, education, and love of music were documented.

Results: Fifty-two mother-infant dyads were tested. Compared with KC alone, KC and live harp music therapy had a significantly beneficial effect on maternal anxiety score (46.8 ± 10 vs. 27.7 ± 7.1, respectively, P < 0.01). Infants’ physiological responses and behavior did not differ significantly. No correlation was found between mothers’ age, ethnicity, years of education and affinity for music, and anxiety scores (P = 0.2 to 0.5 for all four variables).

Conclusions: KC combined with live harp music therapy is more beneficial in reducing maternal anxiety than KC alone. This combined therapy had no apparent effect on the tested infants’ physiological responses or behavioral state.
 

May 2010
H. Rosenblum, Y. Bar-Dayan, Z. Dovrish, S. Lew, N. Weisenberg, A. Neumann, T. Klein and H. Amital

Background: Obstruction of urine outflow can result from mechanical blockade as well as from functional defects. In adults, urinary tract obstruction is due mainly to acquired defects, such as pelvic tumors, calculi, and urethral stricture. In childhood it is mostly due to congenital malformations. In this article we present two rare cases of acute obstructive renal failure that presented with hydronephrosis. These cases underline the wide range of causes that may lead to this clinical feature. 

August 2009
S. Ariad, I. Lipshitz, D. Benharroch, J. Gopas and M. Barchana

Background: Hodgkin’s lymphoma is a distinct primary solid tumor of the immune system that shows wide variation in incidence among different geographic regions and among various races. It was previously suggested that susceptible people living in certain parts of Israel had a higher risk of HL[1] because of exposure to unidentified environmental factors in these regions. Compared with other parts of Israel, these regions were characterized by a higher proportion of Israeli-born Jews.

Objectives: To study time trends in the incidence rate of HL in Israeli-born Jews of all age groups during the years 1960–2005.

Results: A total of 4812 Jewish cases of HL were reported to the Israel Cancer Registry during the study period 1960–2005. There has been a persistent increase in the age-standardized incidence rate of HL, all subtypes pooled, in Israeli-born Jews in both men and women. The age distribution pattern in both genders was bimodal in all periods. The highest incidence was observed in the 20–24 year age group: for women (9.13 per 100,000 per year) during the period 1988–1996, and for men (6.60 per 100,000 per year) during the period 1997–2005.

Conclusions: The reported incidence level of HL in Israeli-born young adult Jews in Israel has increased in recent years to high levels compared with other western countries. Our findings suggest a cohort effect to unidentified factors affecting Israeli-born young adult Jews in Israel.






[1] HL = Hodgkin’s lymphoma


July 2004
E. Leibovitz, D. Harpaz, I. Elly, A. Klepfish and D. Gavish

Background: The indication for aortic valve replacement in patients with significant aortic stenosis is symptomatology. Aortic stenosis may be associated with bleeding from colonic angiodysplasia, resulting in anemia. Persistent anemia in such patients, despite lack of an identifiable source of bleeding, is not considered an indication for valve replacement.

Objectives: To report our experience with two elderly female patients who suffered from severe asymptomatic aortic stenosis, low levels of large von Willebrand factor multimer (10% and 5% respectively) and persistent anemia requiring multiple blood transfusions.

Methods: Both patients underwent an intensive work-up, but a source of bleeding could not be identified. Aortic valve replacement was performed in both patients.

Results: Aortic valve replacement abolished the need for further blood transfusions during a follow-up period of 20 months with normalization of the vWF[1] multimer level (20% and 30% respectively).

Conclusion: We suggest that aortic valve replacement be considered in selected patients with severe, otherwise asymptomatic aortic stenosis, who suffer from persistent anemia requiring multiple blood transfusions, lack an identifiable source of bleeding and have low levels of large vWF multimers.






[1] vWF = von Willebrand factor


November 2002
Peter C. Harpel, MD and Nasreen S. Haque, PhD

Chemokines and their receptors play regulatory roles in inflammatory reactions. Lipoprotein(a) is an atherogenic lipoprotein, however the mechanisms of its actions are not defined. Our interest in chemokines and their receptors was stimulated by the finding that incubation of Lp(a)[1] with human umbilical vein endothelial cells produced a conditioned medium that was chemotactic for human monocytes. Since infiltration of monocytes into the vessel wall is an early lesion in atherosclerosis, this finding provided a novel mechanism to explain the relationship between Lp(a) and atherosclerosis. The chemoattractant produced by HUVEC[2] was identified as CCL1/I-309, a CC chemokine previously reported to be secreted by stimulated monocytes/macrophages and T lymphocytes. CCR8, the CCL1 receptor, was identified on endothelial cells, and CCL1 was found to be a chemoattractant for these cells. Most recently we demonstrated functional CCR8 on human vascular smooth muscle cells and found that the Lp(a)-HUVEC conditioned medium is a chemoattractant for these cells. CCL1 increased metalloproteinase-2 production by HUVEC, an activity that enables these cells to remodel the vascular matrix. These studies suggest that CCR8 may play an important role in arterial wall pathology.

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[1] Lp(a) = lipoprotein(a)

[2] HUVEC = human umbilical vein endothelial cells

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