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עמוד בית
Fri, 22.11.24

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June 2016
Doron Goldberg MD MHA, Avi Tsafrir MD, Naama Srebnik MD, Michael Gal MD PhD, Ehud J. Margalioth MD, Pnina Mor CNM PHD, Rivka Farkash MPH, Arnon Samueloff MD and Talia Eldar-Geva MD PhD

Background: Fertility treatments are responsible for the rise in high order pregnancies in recent decades and their associated complications. Reducing the number of embryos returned to the uterus will reduce the rate of high order pregnancies.     

Objectives: To explore whether obstetric history and parity have a role in the clinician’s decision making regarding the number of embryos transferred to the uterus during in vitro fertilization (IVF).

Methods: In a retrospective study for the period August 2005 to March 2012, data were collected from twin deliveries > 24 weeks, including parity, mode of conception (IVF vs. spontaneous), gestational age at delivery, preeclampsia, birth weight, admission to the neonatal intensive care unit (NICU), and Apgar scores. 

Results: A total of 1651 twin deliveries > 24 weeks were recorded, of which 959 (58%) were at term (> 37 weeks). The early preterm delivery (PTD) rate (< 32 weeks) was significantly lower with increased parity (12.6%, 8.5%, and 5.6%, in women with 0, 1, and ≥ 2 previous term deliveries, respectively). Risks for PTD (< 37 weeks), preeclampsia and NICU admission were significantly higher in primiparous women compared to those who had one or more previous term deliveries. Primiparity and preeclampsia, but not IVF, were significant risk factors for PTD. 

Conclusions: The risk for PTD in twin pregnancies is significantly lower in women who had a previous term delivery and decreases further after two or more previous term deliveries. This finding should be considered when deciding on the number of embryos to be transferred in IVF.  

 

June 2015
Tali Stolovy PhD, Yuval Melamed MD MHA and Arnon Afek MD MHA

Abstract

Video surveillance is a tool for managing safety and security within public spaces. In mental health facilities, the major benefit of video surveillance is that it enables 24 hour monitoring of patients, which has the potential to reduce violent and aggressive behavior. The major disadvantage is that such observation is by nature intrusive. It diminishes privacy, a factor of huge importance for psychiatric inpatients. Thus, an ongoing debate has developed following the increasing use of cameras in this setting. This article presents the experience of a medium-large academic state hospital using video surveillance, and explores the various ethical and administrative aspects of video surveillance in mental health facilities. 

December 2014
Nira Varda-Bloom PhD, Avraham J. Treves PhD, Tatiana Kroupnik MSc, Dan Spiegelstein MD, Ehud Raanani MD and Arnon Nagler MD

Background: Non-mobilized peripheral blood contains mostly committed cells with limited numbers of early progenitors. Objectives: To enrich functional progenitor cells from healthy donors and ischemic heart disease patients by short-term culture of mononuclear cells with defined culture conditions.

Methods: Mononuclear cells obtained from healthy donors and ischemic heart disease patients were cultured for 7 days in a cytokine cocktail. We tested the multilineage differentiation capacities and phenotype of cultured cells.

Results: The short-term culture (7 days) of all study groups with a defined cytokine cocktail resulted in two distinct cell populations (adherent and non-adherent) that differed in their differentiation capacities as well as their cell surface markers. Cultured adherent cells showed higher differentiation potential and expressed endothelial and mesenchymal fibroblast-like surface markers as compared to fresh non-cultured mononuclear cells. The non-adherent cell fraction demonstrated high numbers of colony-forming units, indicating a higher differentiation potential of hematopoietic lineage.

Conclusions: This study proved the feasibility of increasing limited numbers of multipotent progenitor cells obtained from the non-mobilized peripheral blood of healthy donors and ischemic patients. Moreover, we found that each of the two enriched subpopulations (adherent and non-adherent) has a different differentiation potential (mesenchymal, endothelial and hematopoietic).

October 2014
Rina Aharoni PhD and Ruth Arnon PhD

A fundamental challenge for multiple sclerosis (MS) therapy is to promote repair and remyelination beyond their limited spontaneous extent. Glatiramer acetate (GA, Copaxone®), an approved treatment for MS, has been shown to induce immunomodulation as well as neuroprotection in the inflamed central nervous system (CNS) in MS and in its model, experimental autoimmune encephalomyelitis (EAE). Using electron microscopy, immunohistochemistry, and advanced magnetic resonance imaging, we have demonstrated diminished myelin damage in GA-treated mice, in both relapsing-remitting and chronic EAE, even when treatment was applied late after the disease exacerbation, suggesting repair. Furthermore, quantitative analysis indicated significant elevation in remyelinated axons in GA-treated compared to untreated EAE mice. To further prove that GA can promote myelination, we studied its effect in the developing naïve CNS, when injected postnatally. Immunohistochemical and ultrastructural analyses revealed significant increase in the number of myelinated axons, the thickness of the myelin encircling them, and the resulting g-ratios in the spinal cords of GA-injected mice compared to their phosphate-buffered saline-injected littermates. A prominent elevation in the amount of progenitor oligodendrocytes and their proliferation, as well as in mature oligodendrocytes, implied that the effect of GA is linked to the differentiation along the oligodendroglial cascade. Furthermore, a functional advantage in rotating rod test was exhibited by GA-injected mice over their littermates. These cumulative findings indicate that GA treatment affects myelination under inflammatory as well as non-inflammatory conditions, supporting the notion that the repair process in the CNS can be up-regulated by therapy.

August 2014
July 2014
Arnon Blum MD, Saleh Nazzal MD and Avi Peretz PhD
April 2014
Arie Apel MD, Meirav Kedmi MD, Etai Levi MD, Miriam Berkowicz MD, Yaron Davidovitz MD, Abraham Kneller MD, Elena Ribakovsky MD, Avichai Shimoni MD, Arnon Nagler MD MSc and Abraham Avigdor MD
 Background: Acute lymphocytic leukemia (ALL) is a rare disease with a poor outcome in adults. Over the years different protocols have been developed with the aim of improving the outcome. The German study group protocols (GMALL), which are the most frequently used in our institutions, changed significantly between the periods 1989–93 and 1999–2003.

Objectives: To investigate whether the change in protocols over the years resulted in an outcome difference at two hospitals in Israel.

Methods: We thoroughly reviewed the records of 153 patients from Sheba Medical Center and Soroka Medical Center, of whom 106 comprised the study group. The patients were divided into two groups according to the treatment protocol used: 40 patients with the 1989/93 protocol and 66 with the 1999/2003 protocol. Outcome was analyzed for the two groups.

Results: We found a significant difference in disease-free survival (DFS) between the two groups for B cell-ALL (B-ALL) patients who achieved complete remission after induction. There was no difference in overall survival. We did not find any difference in outcome for T cell-ALL patients or for CD20-positive patients.

Conclusions: In our retrospective analysis, GMALL 99/2003 led to a better DFS for B-ALL patients who were in complete remission after induction. This is possibly related to the differences in medications between the protocols, but may also be due to better supportive care. Despite the proven advantage of the newer protocols regarding overall survival, in our experience there was no other significant difference between the two regimens. 

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.

February 2014
Arnon D. Cohen MD MPH PhD, Israel D. Andrews MD, Evgeny Medvedovsky MD, Roni Peleg MD, and Daniel A.Vardy MD MSc
Background: Localized itch of non-pruritoceptive origin is often neuropathic and may be referred to as neuropathic itch syndrome.

Objectives: To describe the results of nerve conduction studies in patients with anogenital pruritus, brachioradial pruritus and scalp dysesthesia, and compare these sites to typical sites of lichen simplex chronicus (LSC).

Methods: The study summarizes previously published data combined with unpublished data of patients with scalp dysesthesia. Nerve conduction studies included measurements of distal sensory and motor latency, conduction velocity and F-responses.

Results: A neuropathy was demonstrated in 29 of 36 patients with anogenital pruritus (80.5%), 8/14 with brachioradial pruritus (57.1%) and 4/9 with scalp dysesthesia (44.4%). The typical sites overlapped with some but not all LSC sites.

Conclusions: A considerable proportion of patients with brachioradial pruritus, anogenital pruritus and scalp dysesthesia have abnormal nerve conduction findings, suggesting a neuropathic origin. The skin sites overlap with some common LSC sites, suggesting that in some cases of LSC a local neuropathy could be a possible cause.

August 2013
January 2013
U. Yoel, T. Abu-Hammad, A. Cohen, A. Aizenberg, D. Vardy and P. Shvartzman
 Background: The rate of adherence to treatment for diabetes mellitus (DM), hypertension (HTN) and lipid metabolic disorder (LMD) is significantly lower in the Bedouin population compared with the Jewish population in southern Israel.

Objectives: To investigate the reasons for non-adherence associated with cardiovascular risk factors among Bedouins.

Methods: We identified Bedouin patients with HTN, DM or LMD from medical records and randomly selected 443 high adherent and 403 low adherent patients. Using trained interviewers we conducted in-depth structured interviews regarding knowledge and attitudes to chronic illness and its treatment, health services evaluation, and socio-demographic factors.

Results: The study population included 99 high and 101 low adherent patients. More low adherent patients agreed that traditional therapy can replace prescribed medications for DM, HTN or LMD (47% vs. 26%, P < 0.01), and 10% used only traditional medications. Also, more low adherent patients believed that the side effects of prescribed drugs are actually worse than the disease itself (65% vs. 47%, P < 0.05), and 47% cited this as a reason for discontinuing drug treatment (47% vs. 31%, P < 0.05).

Conclusions: Our findings suggest that in this minority population the basis for non-adherence derives directly from patients' perceptions of chronic disease and drug treatment. A focused intervention should emphasize the importance of early evidence-based drug therapy with open patient-physician dialogue on the meaning of chronic disease and the side effects of prescribed drugs.

M. Michael, A. Shimoni and A. Nagler
 Acute graft-versus-host disease (GVHD) is a major source of morbidity and mortality after allogeneic stem cell transplantation. Therapy of established acute GVHD depends heavily on corticosteroids, which have limited efficacy and are considerably toxic. It is still a matter of debate whether there is an alternative therapy to corticosteroids. Second-line treatment for acute GVHD after failure of steroids is not well substantiated due to the lack of controlled studies. This review examines the current treatment for acute GVHD, as well as novel therapeutics, such as cellular approaches (e.g., adoptive transfer of mesenchymal stem cells) and enhancement of regulatory T cells (e.g., photopheresis). These approaches avoid the toxicity of generalized immunosuppression and are likely to play a prominent future role in acute GVHD therapy.

August 2012
T. Tohami, A. Nagler and N. Amariglio

Chronic myeloid leukemia (CML) is a clonal hematological disease that represents 15–20% of all adult leukemia cases. The study and treatment of CML has contributed pivotal advances to translational medicine and cancer therapy. The discovery that a single chromosomal abnormality, the Philadelphia (Ph) chromosome, is responsible for the etiology of this disease was a milestone for treating and understanding CML. Subsequently, CML became the first disease for which allogeneic bone marrow transplantation is the treatment of choice. Currently, CML is one of the few diseases where treatment targeted against the chromosomal abnormality is the sole frontline therapy for newly diagnosed patients. The use of directed therapy for CML challenged disease monitoring during treatment and led to the development of definitions that document response and predict relapse sooner than the former routine methods. These methods relied on classical cytogenetics through molecular cytogenetics (FISH) and, finally, on molecular monitoring assays. This review discusses the laboratory tools used for diagnosing CML, for monitoring during treatment, and for assessing remission or relapse. The advantages and disadvantages of each test, the common definition of response levels, and the efforts to standardize molecular monitoring for CML patient management are discussed.

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