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עמוד בית
Fri, 22.11.24

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August 2013
R. Somech, A. Lev, A.J. Simon, D. Korn, B.Z. Garty, N. Amariglio, G. Rechavi, S. Almashanu, J. Zlotogora and A. Etzioni
 Background: Enumeration of T cell receptor excision circles (TREC) was recently adopted as a neonatal screening assay for severe combined immunodeficiency (SCID). Enumeration of kappa-deleting recombination excision circle (KREC) copy numbers can be similarly used for early assessment of B cell lymphopenia.

Objective: To assess the ability of TREC and KREC counts to identify patients with combined T and B cell immunodeficiency in a pilot study in Israel.

Methods: We studied seven children born in Israel during the years 2010–2011 and later diagnosed with SCID, and an additional patient with pure B cell immunodeficiency. TREC and KREC in peripheral blood upon diagnosis and in their neonatal Guthrie cards were analyzed using real-time quantitative polymerase chain reaction, as were Guthrie cards with dried blood spots from healthy newborns and from normal and SCID-like controls.

Results: The first features suggestive of SCID presented at age 3.1 ± 2.4 months in all patients. Yet, the diagnosis was made 4.1 ± 2.9 months later. Their TREC were undetectable or significantly low at their clinical diagnosis and in their originally stored Guthrie cards, irrespective of the amount of their circulating T cells. KREC were undetectable in six SCID patients who displayed B cell lymphopenia in addition to T cell lymphopenia. KREC were also undetectable in one patient with pure B cell immunodeficiency.

Conclusions: TREC and KREC quantification are useful screening tests for severe T and B cell immunodeficiency. Implementation of these tests is highly important especially in countries such as Israel where a high frequency of consanguinity is known to exist. 

M.W. Moloi, F. Zhou, K. Baliki, M.K. Kayembe, F. Cainelli and S. Vento
July 2013
G. Korchia, Y. Amitai, G. Moshe, L. Korchia, A. Tenenbaum, J. Rosenblum and A. Schechter

Background: Hypovitaminosis D is common worldwide, even in sunny regions.

Objectives: To assess the prevalence and determinants of vitamin D deficiency in toddlers.

Methods: A cross-sectional prospective study was conducted in healthy Jewish children aged 1.5–6 years at five primary care pediatric clinics in the Jerusalem area during the period October 2009 to November 2010. Parents were interviewed regarding personal and demographic data and sun exposure. Blood samples were obtained for serum 25-hydroxyvitamin D [25-OHD] level. Vitamin D deficiency and insufficiency were defined as 25-OHD < 20 ng/ml and < 30 ng/ml, respectively.

Results: Of 247 children studied, 188 (76%) were ultra-Orthodox and 59 (24%) were Orthodox, traditional or secular. Mean (± SD) 25-OHD level was 25.7 ± 10 ng/ml. Only 73 children (29.6%) had sufficient 25-OHD levels, 104 (42.1%) had insufficiency, and 70 (28.3%) had 25-OHD deficiency. The difference between ultra-Orthodox and others was insignificant (25 ± 10 vs. 27.8 ± 10.5 ng/ml respectively, P = 0.062). Children aged 1.5–3 years had higher 25-OHD levels than those aged 3–6 years (28.6 ± 10.7 and 24 ± 9.2 ng/ml respectively, P < 0.001). Vitamin D deficiency was more common in winter (53%) and autumn (36%) than in summer (19%) and spring (16%). Toddlers attending long-day kindergartens had higher 25-OHD level than those staying at home or at short-day kindergartens (28.8 ± 11.5 and 24.7 ± 9.6 ng/ml respectively, P < 0.05).

Conclusions: A high prevalence of vitamin D deficiency was found in toddlers in our study, mainly in older children and in the winter and autumn. We recommend routine supplementation of vitamin D for children beyond the agear.

January 2013
A.J. Jacobs
 Infant circumcision has recently attracted controversy, with professional groups recommending it and various individuals trying to criminalize it. Circumcision is beneficial in the prevention of certain diseases, causing minimal tangible harm to those circumcised. This article argues that government should affirmatively adopt policies tolerating minority practices. Such activities should be banned only if they cause substantial damage to society or its members, or if they engender risks or injuries to which no reasonable person would consent. The benefits and risks of circumcision are outlined. Circumcision of male infants does not trigger cause for government to abolish it, and should be permitted if parents desire it. This article also summarizes common arguments against circumcision and attempts to refute them. These arguments are based on a desire for gender equality as well as a belief that minors should not undergo elective bodily alteration. If there are no unusual risks, parents can ethically authorize, and physicians ethically perform, elective infant circumcision for prophylaxis of disease, ritual purposes, or aesthetic reasons. Furthermore, the state should permit this.

 

October 2012
E. Segal, S. Felder , N. Haim, H. Yoffe-Sheinman, A. Peer, M. Wollner, Z. Shen-Or and S. Ish-Shalom

 Background: Vitamin D status is not evaluated routinely in cancer patients with bone metastasis who are treated with bisphosphonates.

Objectives: To assess the effect of vitamin D status on risk of hypocalcemia and quality of life in these patients.

Methods: We performed laboratory tests for routine serum biochemistry, 25(OH)D, plasma parathyroid hormone (PTH) and bone turnover markers (CTX, P1NP) in 54 patients aged 57.5 ± 13 years treated with intravenous bisphosphonates.

Results: Most of the patients (n=44, 77.8%) did not receive calcium and vitamin D supplementation. Their mean serum 25(OH)D levels (12.83 ± 6.86 ng/ml) correlated with vitamin D daily intake (P = 0.002). In 53 patients (98.1%) 25(OH)D levels were suboptimal (< 30 ng/ml). Albumin-corrected calcium levels correlated with plasma PTH (P = 0.001). No correlation was observed between daily calcium intake and serum calcium (P = 0.45). Hypocalcemia was observed in one patient. Mean plasma PTH was 88.5 ± 65 ng/L. Plasma PTH correlated negatively with 25(OH)D serum levels (P = 0.003) and positively with P1NP (P = 0.004). Albumin-corrected calcium correlated negatively with P1NP (mean 126.9 ± 191 ng/ml) but not with CTX levels (mean 0.265 ± 0.1 ng/ml) (P < 0.001). There was no correlation among quality of life parameters, yearly sun exposure and 25(OH)D levels (P = 0.99).

Conclusions: Vitamin D deficiency is frequent in oncology patients with bone metastasis treated with bisphosphonates and might increase bone damage. Our results indicate a minor risk for the development of severe hypocalcemia in vitamin D-deficient patients receiving bisphosphonate therapy. Although vitamin D deficiency might have some effect on the quality of life in these patients, it was not proven significant.
 

March 2012
Z. Mor, T. Shohat, Y. Goor and M. Dan
Background: The increase in human immunodeficiency virus (HIV) among men who have sex with men (MSM) in Israel during the last decade raises concerns regarding other sexually transmitted diseases (STD) in MSM, which are yet undetermined.

Objectives: To evaluate the STD burden in MSM and heterosexuals visiting the Tel Aviv walk-in STD clinic.

Methods: Records of all male patients who attended the clinic once were reviewed to identify demographic characteristics, behavioural attributes, and test results.

Results: Between 2002 and 2008, 1064 MSM (22%) and 3755 heterosexuals (78%) visited the clinic once. Positivity rates in MSM for HIV, urethral Neisseria gonorrhoea and infectious syphilis were higher than in heterosexuals (2.5%, 2.5%. 0.7% vs. 0.6%, 1.3%, 0.3%, respectively), while urethral Chlamydia trachomatis was higher in heterosexuals than in MSM (2.7% and 1.4%, respectively). MSM tested in our clinic were younger than heterosexuals (P < 0.001), more commonly circumcised (P = 0.03) and Israeli-born (P < 0.001), used substances during sex (P = 0.04), and had prior STD (P < 0.001), a greater number of sexual partners (P < 0.001), and earlier sexual debut (P = 0.02). The final multivariate results for MSM to be diagnosed with HIV/STD were greater number of sexual contacts, previous diagnosis with STD, and infrequent use of condom during anal intercourse.

Conclusions: MSM visiting the Levinsky Clinic had higher rates of HIV/STD than heterosexual males, which correlated with their higher-risk behaviors. The unique characteristics of MSM found in our study, such as sex work, substance use, previous diagnosis of STD, multiple partners and inconsistent use of condom during anal sex should be addressed with innovative interventions to prevent STD/HIV in the gay community in Israel.
T. Brosh-Nissimov, Z. Mor, E. Avramovich, E. Katchman, B. Avidor, O. Mor and D. Turner
Background: Outbreaks of syphilis have been described among men who have sex with men (MSM) in many western urban communities in the last few years.

Objectives: To describe the first reported outbreak of syphilis among MSM in Israel within a decade of a constant increase in human immunodeficiency virus (HIV) prevalence.

Methods: All patients diagnosed with syphilis were contacted and asked about their sexual behavior, substance use and previous infections. All were tested for HIV and a phylogenetic analysis was performed. 

Results: A total of 23 (59%) of all 39 male patients diagnosed with primary or secondary syphilis between August 2008 and August 2009 were interviewed. All were MSM and performed anal intercourse, while 13 (55%) reported unprotected anal intercourse. Most participants (21, 91%) practiced unprotected oral intercourse. Nine participants (39%) reported unprotected oral intercourse while using condoms during anal intercourse. Ten participants (43%) reported sexual contacts while traveling abroad in the previous few months. Most participants (96%) were co-infected with HIV, and 15 (68%) were already aware of their HIV infection. Fifteen (66%) reported the use of recreational drugs, alcohol, or both before or during sex. No common source or core transmitters were identified.

Conclusions: This syphilis outbreak included MSM who were co-infected with HIV and were characterized by risky sexual behavior including multiple partners, unprotected anal intercourse and substance use. Future targeted interventions should focus on HIV-infected MSM for secondary prevention.
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