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Biomedical subjects

Alex Zvulunov

Publications and source records attributed to Alex Zvulunov.

13 recordsLinked to original sources

Seborrhea-like dermatitis with psoriasiform elements caused by a mutation in ZNF750, encoding a putative C2H2 zinc finger protein.

We describe an Israeli Jewish Moroccan family presenting with autosomal dominant seborrhea-like dermatosis with psoriasiform elements, including enhanced keratinocyte proliferation, parakeratosis, follicular plugging, Pityrosporum ovale overgrowth and dermal CD4 lymphocyte infiltrate. We mapped the disease gene to a 0.5-cM region overlapping the PSORS2 locus (17q25) and identified a frameshift mutation in ZNF750, which encodes a putative C2H2 zinc finger protein. ZNF750 is normally expressed in keratinocytes but not in fibroblasts and is barely detectable in CD4 lymphocytes.

Chromosomes, Human, Pair 17↗

Keratosis pilaris rubra: a common but underrecognized condition.

BACKGROUND: Keratosis pilaris is a common skin disorder of childhood that often improves with age. Less common variants of keratosis pilaris include keratosis pilaris atrophicans and atrophodermia vermiculata. OBSERVATIONS: In this case series from dermatology practices in the United States, Canada, Israel, and Australia, the clinical characteristics of 27 patients with keratosis pilaris rubra are described. Marked erythema with follicular prominence was noted in all patients, most commonly affecting the lateral aspects of the cheeks and the proximal arms and legs, with both more marked erythema and widespread extent of disease than in keratosis pilaris. The mean age at onset was 5 years (range, birth to 12 years). Sixty-three percent of patients were male. No patients had atrophy or scarring from their lesions. Various treatments were used, with minimal or no improvement in most cases. CONCLUSIONS: Keratosis pilaris rubra is a variant of keratosis pilaris, with more prominent erythema and with more widespread areas of skin involvement in some cases, but without the atrophy or hyperpigmentation noted in certain keratosis pilaris variants. It seems to be a relatively common but uncommonly reported condition.

Adolescent↗

Acute hematogenous osteomyelitis of the pelvis in childhood: Diagnostic clues and pitfalls.

Acute hematogenous osteomyelitis (AHOM) of the pelvis is a rare form of childhood osteomyelitis. Prompted by a recent case, we reviewed the 146 reported cases of pelvic AHOM published since 1966. Classical childhood AHOM of tubular bones usually occurs in older children (mean age, 8.1 y) as opposed to younger children (aged 2-5 y). It is more common in boys than in girls (male to female ratio = 1.5:1). The most common site is the ilium (40%), followed by the ischium (28%) and the pubis (15%). In contrast to AHOM of the long bones, trauma is an uncommon antecedent event in pelvic AHOM. The pain in pelvic AHOM may be referred to the hip, thigh, or abdomen, often leading to misdiagnosis. On average, the correct diagnosis is delayed for 12 days. Such delays have resulted in a permanent disability in 3.4% of the cases. If diagnosed and treated promptly, uneventful recovery can be anticipated in all patients. This case history and review of the literature may facilitate early recognition of pelvic AHOM by primary care physicians, as well as by pediatric or orthopedic specialists.

Acute Disease↗

Topical treatment of persistent cutaneous leishmaniasis with ethanolic lipid amphotericin B.

A 1.5-year-old infant was referred because of spreading skin lesions diagnosed earlier as cutaneous leishmaniasis that did not respond to repeated courses with paromomycin-containing ointment. After consideration of the alternative therapeutic options, the infant was treated with a topical colloidal solution of amphotericin B for 3 weeks, This mode of therapy resulted in resolution of the skin lesions. No local or systemic side effects were observed. There were no signs of recurrence 3 months after cessation of the treatment.

Administration, Topical↗

Office treatment of congenital ankyloglossia.

BACKGROUND: Congenital oral adhesions may pose both aesthetic and functional disturbing ailments to wary parents. Most of these as we have experienced, are benign, easily cured and may be treated as soon as possible in the office. A local survey elucidated that these youngsters are usually advised to wait until one year of age and then taken into the operating room and incision of the adhesion is performed under general anesthesia. We assessed the benign nature of this ailment and relative avascularity of the tissue involved and concluded that with minimal risk an office procedure under local anesthesia can replace current practice. We also found that most referrals with this condition present with the lowest grade of severity of ankyloglossia, amenable to a very brief intervention. MATERIAL/METHODS: During the period 1998-2002 we diagnosed nineteen congenital lesions in thirteen patients. All children were treated in a community clinic setting using electrocautery under local anesthesia. Surgical success was defined as significant improvement in the ability to protrude the tongue outwards beyond the gums and teeth. Gingival adhesions were judged by release of soft tissue adhesions. RESULTS: Tongue Surgical success was accomplished in all cases with minimal discomfort and without complications. In one single case the previous functional limitation was not relieved. CONCLUSIONS: Our experience indicates that office-based electrocautery dissection is an efficacious economical and safe treatment of mild congenital oral adhesions. We recommend this method as therapy of choice for such lesions.

Ambulatory Care↗

Chemotoxicity and survival of tumor-bearing mice under exposure to randomized photoperiodic regimen.

Although disruption of the circadian rhythm had been traditionally considered as a pathological sign, there is an increasing recognition that an existence of internal disorder (or chaos) in the organism's homeostasis is, to some degree, essential to the organism's well being. In this study we explored the effects of rhythm scrambling by exposure to random light/dark (RLD) alternation or by hydrocortisone administration. The variables measured were the toxicity of Adriamycin, Vincristin, Cisplatinum and Cyclophosphamide in C57Bl/6J mice and the survival of EL4 lymphoma-bearing mice, before and after chemotherapy. Rhythm alterations were determined by WBC counts and plasma Alkaline Phosphatase activity. Injections of Adriamycin, Cisplatinum and Vincristin in RLD conditions resulted in a better survival than in control groups of mice kept in LD illumination regimen, although the differences between the groups were significant only for injection of Adriamycin. RLD conditions imposed a "protective" effect on survival of tumor-bearing mice. On the 94th day, 20% of the injected mice in RLD conditions still survived while, there were no survivors beyond 38 days in control group. Chemotherapy had a more prominent beneficial effect on survival in RLD group, as compared to LD group. The injections of hydrocortisone had detrimental effect on survival in both illumination schedules. However, the survival in the RLD group was still better than in the LD group. These experiments indicate that temporal disorganization has beneficial effects on lymphoma-bearing mice and could be used for development of new therapeutic modalities.

Alkaline Phosphatase↗

Pancytopenia resulting from hemophagocytosis in malaria.

Pancytopenia in an acutely ill child is commonly a result of bone marrow suppression. Rarely pancytopenia is a manifestation of inappropriate macrophage activation associated with hemophagocytosis. Viral infections account for most cases of secondary hemophagocytosis. We report a case of malaria-associated hemophagocytosis in a child from an endemic area. Systemic parasitic infections should be included in the differential diagnosis of pancytopenia and infection-associated hemophagocytosis. In this rare subgroup of hemophagocytosis, malaria caused by Plasmodium falciparum is the most common parasitic infection

Animals↗

Serum sickness-like reactions.

A serum sickness-like reaction (SSLR) to drug administration usually consists of cutaneous rash, arthralgia/arthritis, and, often, fever. This entity rarely has been discussed in the dermatologic literature. We describe the case of a 3-year-old girl with urticaria, fever, and arthralgia that appeared 8 days after starting cefaclor therapy for otitis media.

Anti-Bacterial Agents↗

[Psoriasis, biblical afflictions and patients' dignity].

The currently accepted Hebrew word for psoriasis is 'sapachat'. The word 'sapachat' is biblical and its original meaning is unknown. Similar uncertainty applies also to the biblical word 'tzaraat', the currently accepted Hebrew term for leprosy. This article discusses possible explanations of the biblical terms 'sapachat' and 'tzaraat'. The link between 'sapachat' and psoriasis was made only several decades ago. The word 'sapachat' conveys a definite negative connotation, and imposes an emotional burden on psoriatic patients. We therefore recommend preferable use of the word 'psoriasis' and avoid using the offending term 'sapachat'.

Attitude to Health↗

Life-threatening cutaneous conditions in neonates.

One of the major medical concerns in neonates is their vulnerability to life-threatening complications. Early diagnosis of potentially serious medical conditions is essential in prevention of such complication by prompt administration of appropriate treatments. Recognition of cutaneous manifestations of potentially fatal diseases may assist a clinician in management of newborns. To overview the full spectrum of this category of conditions, Medline search was performed for cases of cutaneous manifestations associated with mortality during the first month of live that were published in the English language literature since 1977. This is a concise review of the clinical aspects of most of the potentially life-threatening disorders in neonates divided by basic morphology of their cutaneous manifestations.

Humans↗

Office management of penile skin bridges with electrocautery.

BACKGROUND: Penile skin bridges are an uncommon complication of circumcision that are often found in general practice. This condition can be treated successfully in the office, avoiding referral for a surgical procedure. METHODS: Four case reports of the technique of treating penile skin bridges are described, and the literature on the cause and treatment of skin bridges is reviewed. RESULTS AND CONCLUSIONS: Using local anesthesia and bipolar diathermy, penile skin bridges were successfully treated in the office on 4 patients of different ages. There was no bleeding and the wounds healed without complication. This brief and simple technique, described in detail, is appropriate for an office procedure in family practice.

Adult↗