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עמוד בית
Tue, 21.01.25

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July 2015
April 2014
Sarah Kraus PhD, Inna Naumov PhD, Shiran Shapira PhD, Dina Kazanov MSc, Ilan Aroch MSc, Arnon Afek MD PhD, Oded Eisenberg PhD , Jacob George MD, Nadir Arber MD MSc MHA and Ariel Finkelstein MD
 Background: Atherosclerosis is a complex vascular inflammatory disease. In the last decade it was suggested that non-steroidal anti-inflammatory drugs (NSAID) and in particular inhibition of cyclooxygenase (COX)-2 are associated with an increase in cardiovascular morbidity and mortality. Aspirin is known to reduce the incidence and mortality from ischemic heart disease and is a mainstay in the prevention of vascular complications of atherosclerosis.

Objectives: To examine the effect of meloxicam, a selective COX-2 inhibitor, or low dose aspirin on the development of experimental atherosclerosis in apoE knockout (KO) compared to wild-type (WT) mice. We aimed to test the hypothesis that meloxicam, a potential vasculitis inducer, would exacerbate atherosclerotic lesions while aspirin, which is known to reduce the incidence of thrombosis occlusive events, would increase protection in this model.

Methods: We randomly divided 36 male apoE KO and 36 WT mice, 8 weeks old. Mice were treated for 10 weeks with 0.1 mg/ml aspirin, or 0.05 mg/ml meloxicam, dissolved in their drinking water. Control groups received regular drinking water. At sacrifice, the hearts were removed for histochemical staining and plaque size and composition were examined.

Results: Aspirin-treated animals displayed a decreased atherosclerotic lesion area compared to the untreated control mice, while meloxicam had a null effect on the extent of atherosclerosis in Apo E KO mice.

Conclusions: These results suggest that low dose aspirin reduces early atherosclerosis, while inhibition of COX-2 by meloxicam is not associated with an increase in atherosclerotic plaque size in this mouse model.

January 2014
Alon Eisen, Eli Lev, Zaza Iakobishvilli, Avital Porter, David Brosh, David Hasdai and Aviv Mager
Background: Treatment with HMG-CoA reductase inhibitors (statins) is often complicated by muscle-related adverse effects (MAEs). Studies of the association between low plasma vitamin D levels and MAEs have yielded conflicting results.

Objectives: To determine if low plasma vitamin D level is a risk factor for MAEs in statin users.

Methods: Plasma levels of 25(OH) vitamin D were measured as part of the routine evaluation of unselected statin-treated patients attending the coronary and lipid clinics at our hospital during the period 2007–2010. Medical data on muscle complaints and statin use were retrieved from the medical files. Creatine kinase (CK) levels were derived from the hospital laboratory database.

Results: The sample included 272 patients (141 men) aged 33–89 years. Mean vitamin D level was 48.04 nmol/L. Levels were higher in men (51.0 ± 20.5 vs. 44.7 ± 18.9 nmol/L, P = 0.001) and were unaffected by age. MAEs were observed in 106 patients (39%): myalgia in 95 (35%) and CK elevation in 20 (7%); 11 patients (4%) had both. There was no difference in plasma vitamin D levels between patients with and without myalgia (46.3 ± 17.7 vs. 48.9 ± 21.0 nmol/L, P = 0.31), with and without CK elevation (50.2 ± 14.6 vs. 47.8 ± 20.3 nmol/L, P = 0.60), or with or without any MAE (50.4 ± 15.0 vs. 47.8 ± 10.2 nmol/L, P = 0.27). These findings were consistent when analyzed by patient gender and presence/absence of coronary artery disease, and when using a lower vitamin D cutoff (< 25 nmol/L).

Conclusions: There is apparently no relationship between plasma vitamin D level and risk of MAEs in statin users.

November 2012
August 2012
A.Gefen, M. Weyl Ben Arush, I. Eisenstein, E. Vlodavsky, R. Abdah-Bortnyak and S. Postovsky
April 2011
V. Feldman, Z. Dovrish, N. Weisenberg, Y. Neuman and H. Amital
July 2010
Y. Salit, A. Bitterman, O. Lefel, D. Eisenberg, A. Eden, M. Barzelai, M. Steiner, E. Zuckerman and R. Haddad
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. 

R. Stackievicz, H. Paran, J. Bernheim, M. Shapira, N. Weisenberg, T. Kaufman, E. Klein and M. Gutman

Background: The prognostic significance of biologic markers in women with ductal carcinoma in situ is not fully understood. HER2/neu is a marker of prognostic significance that is routinely assessed in invasive cancer but its correlation with clinical outcome in DCIS[1] is still obscure.

Objectives:
To evaluate the significance of HER-2/neu expression as a prognostic marker in DCIS.

Methods:
Clinical and pathologic data from 84 patients treated for DCIS were analyzed. HER-2/neu expression was determined by immunohistochemical staining. Histopathologic parameters (nuclear grade, histologic subtype, necrosis, calcifications, margins) were reviewed by an experienced pathologist. Local recurrence and/or metastatic spread were used as endpoints to determine the prognostic significance of HER-2/neu expression.

Results:
With a median follow-up of 94.8 months, nine recurrences were reported. Neither univariate nor multivariate analysis showed a significant correlation between HER-2/neu expression and disease recurrence or the time to disease recurrence. Although HER-2/neu expression demonstrated a significant association with high nuclear grade (P < 0.0001) and comedo subtype (P < 0.0001), there was no correlation between these histologic features and recurrence rate. The correlation between high nuclear grade and disease recurrence approached statistical significance (P = 0.07).

Conclusions: No significant association was found between HER-2/neu expression in DCIS and disease recurrence. However, HER-2/neu correlated with negative markers such as nuclear grading and comedo necrosis, and its role should therefore be investigated in larger studies.

 

[1] DCIS = ductal carcinoma in situ

 

March 2010
M. Vaturi, T. Hadar, I. Yedidya, Y. Shapira, D. Monakier, D.E. Weisenberg and A. Sagie

Background: Left atrial volume and exercise capacity are strong predictors of cardiovascular risk. Decreased exercise capacity is expected when LAV[1] is increased due to its association with abnormal left ventricular filling pressure. However, LAV enlargement is expected in chronic mitral regurgitation as well.

Objectives: To examine the linkage between LAV and exercise capacity in chronic MR[2] and to determine whether larger LAV has indeed better exercise capacity in patients with chronic severe degenerative MR and good LV systolic function.

Methods: The study included asymptomatic patients with severe chronic degenerative MR and normal LV[3] systolic function that underwent stress echocardiography. LAV was measured at rest using the biplane Simpson’s method and indexed to body surface area. The cutoff of good exercise capacity was determined at 7 METS.

Results: The patient group comprised 52 consecutive patients (age 60 ± 14 years, 36 males). Two subgroups (19 vs. 33 patients), age- and gender-matched, were formed according to LAVi[4] cutoff of 42 ml/m2. Those with higher LAVi had lower exercise capacity (P = 0.004) albeit similar MR grade, baseline blood pressure, LV function and size. Receiver-operator curve analysis revealed indexed LAV value of ≤ 42 as 51% sensitive and 88% specific for predicting exercise capacity > 7 METS (AUC[5] = 0.7, P = 0.03). In multivariate analysis, age, gender and LAVi were identified as independent predictors of exercise capacity.

Conclusions: In asymptomatic patients with severe chronic degenerative MR and normal LV systolic function, mild enlargement of the left atrium (≤ 42 ml/m2) is associated with good exercise capacity.






[1] LAV = left atrial volume

[2] MR = mitral regurgitation

[3] LV = left ventricular

[4] LAVi = LAV indexed to body surface area

[5] AUC = area under the curve


December 2009
October 2009
T. Strauss, G. Kenet, I. Schushan-Eisen, R. Mazkereth and J. Kuint
G. Goldenberg, A. Eisen, N. Weisenberg and H. Amital
December 2008
A. Vivante, R. Bilik, I. S. Eisen, J. Kuint

Background: Over the last two decades, the epidemiology, treatment strategy and mortality rate for congenital diaphragmatic hernia have changed.

Objectives: To retrospectively analyze our experience with CDH[1] of the last 22 years.

Methods: We reviewed the charts of all infants suffering from CDH between 1985 and 2007. Prenatal and maternal as well as perinatal and neonatal data were collected, including outcome parameters. The 71 infants that we identified were divided them into two historical groups: from 1985 to 1995 (group 1, 123 patients) and from 1996 to 2007 (group 2, 45 patients).

Results: We found an increase in the incidence of prenatal diagnosis and a subsequent significant decrease in gestational age at diagnosis in group 2 (25 weeks gestation, compared with 30 weeks gestation in group 1, P = 0.018). In addition, we noted a trend toward a reduced number of infants with right-sided hernia and associated cardiac anomalies. The timing to post-delivery surgery was significantly longer in group 2 (20 hours in group 1 vs. 53 hours in group 2, P < 0.001). A significant reduction in postoperative mortality was demonstrated in group 2 compared with group 1 (13.5% vs. 38.7% respectively, P = 0.04),

Conclusion: Our data suggest a higher survival rate for operated infants in group 1 during the last decade, probably due to changes in preoperative methods of treatment as well as later surgery timing compared to group 1. We speculate that today’s cases of congenital diaphragmatic hernia are probably milder than in the past due to earlier and more detailed prenatal diagnosis and subsequent termination of pregnancies for the more severe forms of the disorder. 






[1] CDH = congenital diaphragmatic hernia


November 2008
Y. Bentur et al

Background: The Israel National Poison Information Center, Rambam Health Care Campus, provides telephone consultations on clinical toxicology as well as drug and teratogen information around the clock. The Center participates in research, teaching and regulatory activities, and also provides laboratory services.

Objectives: To analyze data on the epidemiology of poisonings and poison exposures in Israel.

Methods: We conducted computerized queries and a descriptive analysis of the medical records database of the IPIC[1] during 2007.

Results: Overall, 26,738 poison exposure cases were recorded, a 118.5% increase compared to 1995. Children under 6 years old were involved in 45% of cases; 73% of the calls were made by the public and 25.5% by physicians; 74.4% of exposures were unintentional and 9.2% intentional. Chemicals were involved in 37.9% of cases, pharmaceuticals in 44.2%, bites and stings in 4.3% and poisonous plants in 1.2%. Substances most frequently involved were analgesics, cleaning products and antimicrobials. Clinical severity was moderate/major in 3.5%. Substances most frequently involved in moderate/major exposures were insecticides, drugs of abuse and corrosives. Eight fatalities were recorded – three unintentional exposures (all chemicals) and five intentional (chemicals, medications, drugs of abuse).

Conclusions: The rates of poison exposures and poisonings in Israel have increased significantly, contributing substantially to morbidity and mortality. The IPIC database is a valuable national resource for collecting and monitoring cases of poison exposure and can be used as a real-time surveillance system. It is recommended that reporting to the IPIC become mandatory and that its activities be adequately supported by national resources.

 






[1] IPIC = Israel National Poison Information Center


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