Nadav Astman

Dr. Nadav Astman

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Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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NANadav Astman
Nadav Astman
CAChen Arbel
Chen Arbel
OKOren Katz
Oren Katz
ABAviv Barzilai
Aviv Barzilai
MSMichal Solomon
Michal Solomon
Eli SchwartzEli Schwartz
Eli Schwartz
Miltefosine, an orally administered drug, is an important component of the therapeutic arsenal against visceral and mucosal forms of leishmaniasis. However, data regarding the safety and tolerability of miltefosine treatment for cutaneous leishmaniasis (CL) are relatively limited. The aim of this study was to evaluate the tolerability, safety, and adverse events (AEs) of miltefosine treatment in patients with CL. In this cohort study, we reviewed the medical records of all miltefosine-treated patients between 1 January 2016 and 31 December 2022, at Israel Defense Forces military dermatology clinics and the dermatology and Tropical Medicine Clinics at Chaim Sheba Medical Center, Ramat-Gan, Israel. A total of 68 patients (54 males, 79%) with a median age of 30.3 ± 15.6 years (range: 18–88) were included in this study. Leishmania species were identified as L. major (n = 37, 54.4%), L. tropica (n = 12, 17.6%), L. braziliensis (n = 18, 26.5%), and L. infantum (n = 1, 1.5%) using polymerase chain reaction (PCR). Miltefosine tablets were administered orally at a dose of 50 mg, three times daily, for 28 days. Overall, 44 patients (65%) completed the 28-day treatment, and the remaining patients required dose reduction or early discontinuation of treatment. AEs (of any degree) were common, reported in 91% of patients. Both previously reported and previously unreported AEs were documented. Gastrointestinal symptoms (66.1%) and malaise (23.5%) typically occurred during the first two weeks of treatment and tended to subside. Other AEs, including acute renal failure (20.6%), sudden and severe pleuritic chest pain (7.6%), acne exacerbation (11.8%), suppuration of CL lesions (17.8%), and AEs related to the male genitourinary system (39.6% of males), typically occurred towards the end of treatment. The latter included testicular pain, epididymitis, diminution or complete absence of ejaculate, inability to orgasm, and impotence. Severe AEs necessitated treatment discontinuation (29.4%) or hospitalization (10.3%). URTI-like symptoms, arthritis, cutaneous eruption, pruritus, and laboratory abnormalities were also observed. Overall, the cure rate (for all patients combined) evaluated 3 months after the completion of treatment was 60%. The tolerability of miltefosine treatment for CL is low. Close clinical and laboratory monitoring is required during treatment, as severe AEs are not uncommon. As new insights regarding its toxicities emerge, further studies are required to define the role of miltefosine in the treatment of CL.

7 August 2019 in Dermatology
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RSRony Shreberk-Hassidim
Rony Shreberk-Hassidim
EGEran GALILI
Eran GALILI
AHAyal Hassidim
Ayal Hassidim
YRYuval Ramot
Yuval Ramot
IMIlan Merdler
Ilan Merdler
NANadav Astman
Nadav Astman
Background and Aims: Although psoriasis can develop at any age, the data regarding its characteristics in adolescents are sparse. This study was designed to determine the psoriasis prevalence and its associations with the body mass index (BMI), lipid profile, and comorbidities in adolescents. Methods: This was a nationwide population-based cross-sectional retrospective study of adolescents (16–18 years old) evaluated for military service between January 1999 and January 2014. Results: Our database included 887,765 adolescents (57.1% males), of whom 3,112 (0.35%) were diagnosed with psoriasis. During the 15-year study period, the psoriasis prevalence increased by 1.4-fold, from 0.3 to 0.42% (1.25-fold for the males and 1.63-fold for the females). Certain comorbidities, such as contact dermatitis, hyperhidrosis, and arthritis, were significantly associated with psoriasis (odds ratios [ORs] of 2.26, 1.51, and 5.3, respectively). The adolescents with psoriasis had significantly elevated BMI and triglyceride values. We found increased ORs of 1.34 (95% confidence interval [CI] = 1.25–1.56) and 1.56 (95% CI = 1.32–1.83) for the overweight and obese adolescents, respectively, while a lower BMI (<20) had an opposite effect with psoriasis (OR = 0.8). Conclusions: Based on our results, the psoriasis prevalence in Israeli adolescents is rising. Dermatological comorbidities and an increased BMI were associated with psoriasis in these adolescents. A better understanding of the distinctive epidemiological characteristics of juvenile psoriasis may allow for the early detection of comorbidities and improve its management.

15 June 2023 in Comparative Immunology, Microbiology and Infectious Diseases
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GKGabriela Kleinerman
Gabriela Kleinerman
SMSivan Melloul
Sivan Melloul
LCLavie Chaim
Lavie Chaim
SMShani E. Mergy
Shani E. Mergy
RKRoi G. Kaufman
Roi G. Kaufman
Gad BanethGad Baneth
Gad Baneth

1 April 2021 in JAMA Dermatology
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NTNir Tsur
Nir Tsur
ABAviv Barzilai
Aviv Barzilai
NANadav Astman
Nadav Astman
A woman in her 50s presented with an edematous, massively enlarged right auricle. The patient had immigrated to Israel 9 years before admission. She was adamant that the lesion had been present since early childhood but had gradually increased with a recent appearance of foul-smelling otorrhea. On examination, the auricle was markedly enlarged, edematous, and encircled by an erythematous, indurated plaque partially covered with a fine scale (Figure 1A). Diascopy revealed an “apple jelly” appearance. There was no local or distant lymphadenopathy; general physical examination findings were unremarkable. Identify all potential conflicts of interest that might be relevant to your comment. Conflicts of interest comprise financial interests, activities, and relationships within the past 3 years including but not limited to employment, affiliation, grants or funding, consultancies, honoraria or payment, speaker's bureaus, stock ownership or options, expert testimony, royalties, donation of medical equipment, or patents planned, pending, or issued. Err on the side of full disclosure. If you have no conflicts of interest, check "No potential conflicts of interest" in the box below. The information will be posted with your response. Not all submitted comments are published. Please see our commenting policy for details.