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עמוד בית
Sat, 20.07.24

Search results


May 2012
J.E. Schroeder, L. Kaplan, R. Eldor, A. Hasharoni, N. Hiller and Y. Barzilay
April 2012
U. Nussinovitch, I. Ben-Zvi and A. Livneh

Background: The association between familial Mediterranean fever (FMF) and increased risk for ventricular arrhythmias is controversial, and data on this subject are meager.

Objectives: To evaluate QT variability index (QTVI) and other repolarization markers associated with arrhythmogenity in patients with amyloidosis of FMF.

Methods: The study group comprised 12 FMF patients with amyloidosis, and 14 age and gender-matched healthy subjects served as the control group. QT measurements were conducted according to accepted procedure, using computerized software for recording and analysis.

Results: No differences were found in clinical and demographic parameters in the study and control groups, except for hypertension which was more common in the FMF amyloidosis group. QTc and power spectral analysis of QT variability parameters were similar in both groups. Nevertheless, QTVI values in FMF amyloidosis patients were significantly higher than in healthy individuals (-1.02 ± 0.38, vs. -1.36 ± 0.32 respectively, P = 0.02).

Conclusions: Compared with healthy controls, amyloidosis of FMF is associated with increased QTVI. It remains unknown whether this finding is solely amyloidosis related and whether it has any prognostic significance.

 

U. Arad, E. Niv, D. Caspi and O. Elkayam

Monogenic periodic fever syndromes are characterized by recurrent episodes of fever, accompanied by localized inflammatory manifestations. Among them, familial Mediterranean fever (FMF) is the most studied and is by far the most prevalent periodic fever syndrome in Israel. We present a diagnostic workup of a patient suffering from a periodic fever syndrome, initially thought to be FMF and characterized by attacks of fever, severe abdominal pain, a migratory erythematous rash and conjunctivitis. The development of periorbital edema presenting as diplopia led to consideration of tumor necrosis factor receptor-1-associated periodic syndrome (TRAPS). Genetic tests confirmed the diagnosis. This case should alert us that even in Israel, a patient with periodic fever, not fully consistent with the typical features of FMF, should be evaluated for other periodic fever syndromes.

R. Nesher, R. Kohen, S. Shulman, B. Siesky, Y. Nahum and A. Harris

Background: Vascular insufficiency is considered to play an important role in the pathogenesis of normal-tension glaucoma (NTG). Autoregulation of blood flow in the eye has been shown to be impaired in NTG, resulting in the inability to compensate for changes in intraocular pressure or blood pressure in order to maintain adequate perfusion. Objectives: To evaluate the occurrence of combined bradycardia-hypotension during 24 hour monitoring of blood pressure and heart rate in patients with NTG.

Methods: Eleven NTG patients participated in the study. All had episodic symptoms of dizziness or lightheadedness, but were confirmed as not having a diagnosis of orthostatic hypotension. Twenty-four hour monitoring was performed with systemic blood pressure and heart rate automatically measured every 20 minutes during daytime and every hour during the night. The cardiac diastolic and systolic double products (dDP and sDP) at each reading were calculated by multiplying the heart rate by the respective blood pressure. dDP < 3600 and sDP < 5400 (corresponding to a heart rate of 60 beats/min and a blood pressure of 60 and 90 mmHg, respectively) were considered abnormally low, and dDP < 2500 and sDP < 4000 (corresponding to a heart rate 50 beats/min and a blood pressure of 50 and 80 mmHg, respectively) were considered severely abnormal.

Results: dDP was abnormally low in all 11 NTG patients on at least one occasion, the majority occurring during the night-time hours, while abnormally low sDP was present in 8 of the 11 patients. The mean cumulative duration of low dDP readings was 4.2 ± 3.2 hours. Severely low dDP readings were observed in six patients.

Conclusions: Abnormally low dDP was recorded in all NTG patients, lasting more than an hour in the majority of cases. Abnormally decreased dDP may represent a state of cardiovascular autonomic dysregulation, resulting in low ocular perfusion in certain NTG patients.

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.
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.


 
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