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Mohamad J. [Drug therapy for acute and elective stent angioplasty]. Radiologie (Heidelb) 2024:10.1007/s00117-024-01310-3. [PMID: 38684541 DOI: 10.1007/s00117-024-01310-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/17/2024] [Indexed: 05/02/2024]
Abstract
CLINICAL ISSUE Carotid artery stenoses are constrictions of the common carotid artery and the internal carotid artery. They cause around 15% of all cerebral ischemia, which is why their detection and correct treatment play an important role in clinical practice. PRACTICAL RECOMMENDATIONS Depending on the severity and clinical symptoms, carotid artery stenosis is treated conservatively, surgically or endovascularly by means of stent angioplasty. In the case of stent angioplasty in particular, correct drug therapy plays an important role in avoiding/reducing thromboembolic complications.
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Affiliation(s)
- J Mohamad
- Klinik für Diagnostische und Interventionelle Neuroradiologie, Universitätsklinikum des Saarlandes, Kirrberger Straße 1, 66424, Homburg/Saar, Deutschland.
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Mohamad J, Sarig O, Beattie P, Malovitski K, Assaf S, O’Toole E, Schwartz J, Evans H, Samuelov L, Sprecher E. 261 A novel skin phenotype resulting from heterozygous deletion of six keratin genes. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Malovitski K, Sarig O, Assaf S, Mohamad J, Bergson S, Peled A, Eskin-Schwartz M, Gat A, Pavlovsky M, Sprecher E. 259 KLF4 variants: a novel cause of palmoplantar keratoderma. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Mohamad J, Sarig O, Malki L, Rabinowitz T, Assaf S, Malovitski K, Pavlovsky M, Shomron N, Samuelov L, Sprecher E. 162 Loss-of-function variants in SERPINA12 underlie autosomal recessive palmoplantar keratoderma. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Assaf S, Mohamad J, Malki L, Malovitski K, Sarig O, Vodo D, Sprecher E. 004 Up-regulation of ST18 drives pemphigus vulgaris pathogenesis: a perpetuum mobile model. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mohamad J, Simgen A. [Acoustic neuromas : Differential diagnoses]. Radiologe 2021; 60:1018-1025. [PMID: 32995935 DOI: 10.1007/s00117-020-00751-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
CLINICAL ISSUE Acoustic neuromas in adults are the most common infratentorial tumors that originate from the Schwann's cells of the vestibular part of the eighth cranial nerve and are clinically noticeable through neurological deficits, such as unilateral hypoacusis, tinnitus, dizziness and unilateral facial nerve palsy. Due to the widespread use of computed tomography (CT) and magnetic resonance imaging (MRI), acoustic neuromas can now be diagnosed with a high rate of sensitivity and specificity; however, there are a number of possible differential diagnoses, such as meningioma, epidermoid and metastases as well as a number of less common diagnoses, such as peripheral nerve sheath tumors, sarcoidosis/neuritis and lipomas, which are sometimes difficult to distinguish from acoustic neuromas. Particularly smaller findings can often only be differentiated with the aid of a histopathological investigation. PRACTICAL RECOMMENDATIONS Small intrameatal and asymptomatic acoustic neuromas, some of which are discovered as incidental findings, do not require immediate treatment and should instead be monitored by MRI. Larger findings that are symptomatic and thus cause a number of severe neurological symptoms that are stressful for the patient, should be surgically removed. In cases where surgical treatment is not possible or for smaller symptomatic findings, radiotherapy can also be considered as an alternative.
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Affiliation(s)
- J Mohamad
- Klinik für Diagnostische und Interventionelle Neuroradiologie, Universitätsklinikum des Saarlandes, Kirrberger Straße 1, 66424, Homburg/Saar, Deutschland.
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Pavlovsky M, Peled A, Samuelov L, Malki L, Malovitski K, Assaf S, Mohamad J, Meijers O, Eskin-Schwartz M, Sarig O, Sprecher E. Molecular epidemiology of pachyonychia congenita in the Israeli population. Clin Exp Dermatol 2020; 46:663-668. [PMID: 33190296 DOI: 10.1111/ced.14509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/10/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Pachyonychia congenita (PC) is a rare autosomal dominant disorder featuring palmoplantar keratoderma, nail dystrophy, oral leucokeratosis, pilosebaceous cysts and natal teeth. PC results from dominant mutations in one of five genes (KRT6A, KRT6B, KRT6C, KRT16, KRT17) encoding keratin proteins. AIM To delineate the clinical and genetic features of PC in a series of Israeli patients. METHODS We used direct sequencing of genomic DNA, and also used cDNA sequencing where applicable. RESULTS We collected clinical information and molecular data in a cohort of Israeli families diagnosed with PC (n = 16). Most of the patients were Ashkenazi Jews and had a family history of PC. The most common clinical findings were painful focal plantar keratoderma (94%) accompanied by nail dystrophy (81%), pilosebaceous cysts (31%) and prenatal/natal teeth (13%). In contrast to the high prevalence of KRT6A mutations in other populations, we found that KRT16 mutations were the most common type among Israeli patients with PC (56%). Most (77%) of the Israeli patients with PC with KRT16 mutation carried the same variant (c.380G>A; p.R127H) and shared the same haplotype around the KRT16 locus, suggestive of a founder effect. CONCLUSION The data gleaned from this study emphasizes the importance of population-specific tailored diagnostic strategies.
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Affiliation(s)
- M Pavlovsky
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - A Peled
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - L Samuelov
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - L Malki
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - K Malovitski
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - S Assaf
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - J Mohamad
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - O Meijers
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - M Eskin-Schwartz
- Genetics Institute at Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - O Sarig
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - E Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Assaf S, Malki L, Mayer T, Mohamad J, Peled A, Pavlovsky M, Malovitski K, Sarig O, Vodo D, Sprecher E. ST18 affects cell-cell adhesion in pemphigus vulgaris in a tumour necrosis factor-α-dependent fashion. Br J Dermatol 2020; 184:1153-1160. [PMID: 33205400 DOI: 10.1111/bjd.19679] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Pemphigus vulgaris (PV) is a life-threatening mucocutaneous autoimmune blistering disease. We previously showed that genetic variants within the ST18 gene promoter area confer a sixfold increase in the propensity to develop PV. ST18, a transcription factor, was found to be overexpressed in the epidermis of patients with PV. In addition, it was found to promote autoantibody-mediated abnormal epidermal cell-cell adhesion and secretion of proinflammatory mediators by keratinocytes. OBJECTIVES To delineate the mechanism through which ST18 contributes to destabilization of cell-cell adhesion. METHODS We used quantitative reverse-transcriptase polymerase chain reaction, immunofluorescence microscopy, a luciferase reporter system, site-directed mutagenesis, chromatin immunoprecipitation (ChIP) and the dispase dissociation assay. RESULTS The ChIP and luciferase reporter assays showed that ST18 directly binds and activates the TNF promoter. Accordingly, increased ST18 expression contributes to PV pathogenesis by destabilizing cell-cell adhesion in a tumour necrosis factor (TNF)-α-dependent fashion. In addition, dual immunofluorescence staining showed increased expression of both ST18 and TNF-α in the skin of patients with PV carrying an ST18-associated PV risk variant, which was found to be associated with a more extensive PV phenotype. CONCLUSIONS Our findings suggest a role for TNF-α in mediating the deleterious effect of increased ST18 expression in PV skin.
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Affiliation(s)
- S Assaf
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - L Malki
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - T Mayer
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - J Mohamad
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - A Peled
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - M Pavlovsky
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - K Malovitski
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - O Sarig
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - D Vodo
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - E Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Mohamad J, Samuelov L, Malki L, Peled A, Pavlovsky M, Malovitski K, Taiber S, Adir N, Rabinowitz T, Shomron N, Milner JD, Lestringant G, Sarig O, Sprecher E. Palmoplantar keratoderma caused by a missense variant in CTSB encoding cathepsin B. Clin Exp Dermatol 2020; 46:103-108. [PMID: 32683719 DOI: 10.1111/ced.14384] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 06/30/2020] [Accepted: 07/15/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Palmoplantar keratoderma (PPK) refers to a large group of disorders characterized by extensive genetic and phenotypic heterogeneity. PPK diagnosis therefore increasingly relies upon genetic analysis. AIM To delineate the genetic defect underlying a case of diffuse erythematous PPK associated with peeling of the skin. METHODS Whole exome and direct sequencing, real-time quantitative PCR, protein modelling and a cathepsin B enzymatic assay were used. RESULTS The patient studied had severe diffuse erythematous PPK transgrediens. Pedigree analysis suggested an autosomal dominant mode of inheritance. Whole exome sequencing revealed a heterozygous missense mutation in the CTSB gene, encoding the cysteine protease cathepsin B. Genomic duplications in a noncoding region, which regulates the expression of CTSB, were recently found to cause erythrokeratolysis hiemalis, a rare autosomal dominant disorder of cornification. This mutation affects a highly conserved residue, and is predicted to be pathogenic. Protein modelling indicated that the mutation is likely to lead to increased endopeptidase cathepsin B activity. Accordingly, the CTSB variant was found to result in increased cathepsin B proteolytic activity. CONCLUSION In summary, we report the identification of the first gain-of-function missense mutation in CTSB, which was found to be associated in one individual with a dominant form of diffuse PPK.
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Affiliation(s)
- J Mohamad
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - L Samuelov
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - L Malki
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - A Peled
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - M Pavlovsky
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - K Malovitski
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - S Taiber
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - N Adir
- Schulich Faculty of Chemistry, Technion, Haifa, Israel
| | - T Rabinowitz
- Department of Cell and Developmental Biology, Tel Aviv University, Tel Aviv, Israel
| | - N Shomron
- Department of Cell and Developmental Biology, Tel Aviv University, Tel Aviv, Israel
| | - J D Milner
- Department of Pediatrics, Columbia University, Irving Medical Center, New York, NY, USA
| | - G Lestringant
- Consultant Dermatologist (retired), British Ministry of Defence, London, UK
| | - O Sarig
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - E Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Kang TL, Chelliah S, Velappan RD, Kabir N, Mohamad J, Nor Rashid N, Ismail S. Intranasal inoculation of recombinant DNA vaccine ABA392 against haemorrhagic septicaemia disease. Lett Appl Microbiol 2019; 69:366-372. [PMID: 31508837 DOI: 10.1111/lam.13215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 07/17/2019] [Accepted: 07/29/2019] [Indexed: 11/26/2022]
Abstract
We evaluate the efficacy of recombinant DNA vaccine ABA392 against haemorrhagic septicaemia infection through intranasal administration route by targeting the mucosal immunity. The DNA vaccine was constructed and subjected to animal study using the Sprague Dawley (SD) rat. The study was divided into two major parts: (i) active and (ii) passive immunization studies, involving 30 animals for each part. Each group was then divided into five test groups: two test samples G1 and G2 with 50 and 100 µg ml-1 purified DNA vaccine; one positive control G5 with 106 CFU per ml formalin-killed PMB2; and two negative controls, G3 and G4 with normal saline and pVAX1 vector. Both studies were conducted for the determination of immunogenicity by total white blood cell count (TWBC), indirect ELISA and histopathological changes for the presence of the bronchus-associated lymphoid tissue (BALT). Our findings demonstrate that TWBC, IgA and IgG increased after each of the three vaccination regimes: groups G1, G2 and G5. Test samples G1 and G2 showed significant differences (P < 0·05) compared to the negative controls, G3 and G4, but no significant differences from the positive control G5. Groups G1, G2 and G5 showed more formation of BALT compared to the negative controls, G3 and G4. Our results show that intranasal inoculation of recombinant DNA vaccine ABA392 can provoke mucosal immunity which makes it a potential prophylactic against HS. SIGNIFICANCE AND IMPACT OF THE STUDY: New approach of combating haemorrhagic septicaemia disease among bovines by recombinant DNA vaccine is crucial to overcome the loss of edible products from the infected bovines. DNA vaccine can potentially serve as a better immunogen which would elicit both cellular and humoral immunity, and it is also stable for its molecular reproduction. This research report demonstrates an effective yet simple way of administering the DNA vaccine via the intranasal route in rats, to provoke the mucosal immunity through the development of immunoglobulins IgA, IgG and bronchus-associated lymphoid tissue which guard as the first-line defence at the host's mucosal lining.
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Affiliation(s)
- T L Kang
- Faculty of Science, Institute of Science Biology, University of Malaya, Kuala Lumpur, Malaysia
| | - S Chelliah
- Faculty of Science, Institute of Science Biology, University of Malaya, Kuala Lumpur, Malaysia
| | - R D Velappan
- Faculty of Science, Institute of Science Biology, University of Malaya, Kuala Lumpur, Malaysia
| | - N Kabir
- Faculty of Science, Institute of Science Biology, University of Malaya, Kuala Lumpur, Malaysia
| | - J Mohamad
- Faculty of Science, Institute of Science Biology, University of Malaya, Kuala Lumpur, Malaysia
| | - N Nor Rashid
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - S Ismail
- Faculty of Science, Institute of Science Biology, University of Malaya, Kuala Lumpur, Malaysia
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Pavlovsky M, Sarig O, Peled A, Mohamad J, Samuelov L, Malki L, Sprecher E, Taieb A, Rambert J, Cario M. 199 ENPP1: connecting calcification, keratinization and pigmentation. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mohamad J, Samuelov L, Ben‐Amitai D, Malchin N, Sarig O, Sprecher E. PLACK syndrome shows remarkable phenotypic homogeneity. Clin Exp Dermatol 2019; 44:580-583. [DOI: 10.1111/ced.13887] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2018] [Indexed: 01/26/2023]
Affiliation(s)
- J. Mohamad
- Department of Dermatology Tel Aviv Sourasky Medical Center Tel Aviv Israel
- Department of Human Molecular Genetics & Biochemistry Sackler Faculty of Medicine Tel Aviv University Ramat Aviv Israel
| | - L. Samuelov
- Department of Dermatology Tel Aviv Sourasky Medical Center Tel Aviv Israel
| | - D. Ben‐Amitai
- Pediatric Dermatology Unit Schneider Children's Medical Center of Israel Petach Tikva Israel
| | - N. Malchin
- Department of Dermatology Tel Aviv Sourasky Medical Center Tel Aviv Israel
| | - O. Sarig
- Department of Dermatology Tel Aviv Sourasky Medical Center Tel Aviv Israel
| | - E. Sprecher
- Department of Dermatology Tel Aviv Sourasky Medical Center Tel Aviv Israel
- Department of Human Molecular Genetics & Biochemistry Sackler Faculty of Medicine Tel Aviv University Ramat Aviv Israel
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Mohamad J, Samuelov L, Malchin N, Tiaber S, Rabinowitz T, Bitterman-Deutsch O, Molho-Pessach V, Cohen-Barak E, Bach G, Garty B, Bergman R, Harel A, Nanda A, Lestringant G, McGrath J, Shalev S, Shomron N, Mashiach J, Eskin-Schwartz M, Sarig O, Sprecher E. 283 Molecular epidemiology of non-syndromic autosomal recessive congenital ichthyosis in a middle eastern population. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Sarig O, Hafner A, Malchin N, Keydar I, Fishilevich S, Isakov O, Fainberg G, Samuelov L, Nousbeck J, Mohamad J, Tiaber S, Rabinowitz T, Shomron N, Lancet D, Ast G, Sprecher E. 774 Focal facial dermal dysplasia type I caused by a duplication on 1p36.22. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bochner R, Eskin-Schwartz M, Sarig O, Peled A, Mohamad J, Malchin N, Isakov O, Fainberg G, Shomron N, Bertolini M, Paus R, Sprecher E. 770 An exceptional mutation in ALX4 results in ectodermal defects. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Baniel A, Ziv L, Bonen H, Ben-Moshe Livne Z, Peled A, Mohamad J, Sarig O, Rechavi G, Sprecher E. 772 Development of a zebrafish model for CARD14-associated human disorders. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Tiaber S, Mohamad J, Cohen-Barak E, Gat A, Mamlouk E, Sarig O, Shalev S, Sprecher E. 777 SAM syndrome is characterized by extensive phenotype heterogeneity. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Vodo D, Sarig O, Jeddah D, Malchin N, Eskin-Schwarz M, Mohamad J, Rabinowitz T, Goldberg I, Shomron N, Khamaysi Z, Bergman R, Sprecher E. Punctate palmoplantar keratoderma: an unusual mutation causing an unusual phenotype. Br J Dermatol 2018; 178:1455-1457. [PMID: 29494755 DOI: 10.1111/bjd.16502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- D Vodo
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Tel Aviv University, Tel Aviv, Israel
| | - O Sarig
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - D Jeddah
- Department of Human Molecular Genetics and Biochemistry, Tel Aviv University, Tel Aviv, Israel
| | - N Malchin
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - M Eskin-Schwarz
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - J Mohamad
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Tel Aviv University, Tel Aviv, Israel
| | - T Rabinowitz
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - I Goldberg
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - N Shomron
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Variantyx Ltd, Framingham, MA, U.S.A
| | - Z Khamaysi
- Department of Dermatology, Rambam Medical Center, Haifa, Israel
| | - R Bergman
- Department of Dermatology, Rambam Medical Center, Haifa, Israel
| | - E Sprecher
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Tel Aviv University, Tel Aviv, Israel
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Yousuf H, Aleem U, Egan R, Maheshwari P, Mohamad J, McNamara D. Elevated Faecal Calprotectin Levels are a Reliable Non-Invasive Screening Tool for Small Bowel Crohn's Disease in Patients Undergoing Capsule Endoscopy. Dig Dis 2018; 36:202-208. [PMID: 29466790 DOI: 10.1159/000485375] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 11/02/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND Approximately 10% of Crohn's disease (CD) patients have this disease affecting the small bowel (SB) beyond the reach of Ileo-colonoscopy. Capsule endoscopy (SBCE) is the recommended investigation for SB disease. An accurate and inexpensive biomarker would help identify at-risk patients. AIM To examine the efficacy of faecal calprotectin (FC) and C-reactive protein (CRP) as predictors of SBCE findings in suspected and known CD. METHODS A prospective observational study. Consecutive patients referred for SBCE gave FC and CRP samples. The diagnostic accuracy for SB CD based on SBCE result was calculated for both FC and CRP. RESULTS Of 100 invitees, FC and SBCE results were available in 64 cases. Correlation between FC >50 µg/g and SBCE result was poor К = 0.163; sensitivity, specificity, positive predictive value (PPV) and negative predictive values for ileitis were 60, 61, 32 and 83% respectively. PPV and specificity improved at FC >100 µg/g, 76 and 40%, correlation remained fair, К = 0.259. Receiver operating characteristic analysis had a sensitivity of 47% and specificity of 90% for FC >194 µg/g. CRP alone or in combination was an inaccurate predictor of ileitis. CONCLUSION Our study suggests that FC level >194 µg/g may be a useful SBCE filter test, identifying patients at risk of SB CD.
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Affiliation(s)
- Hamid Yousuf
- Department of Gastroenterology, Tallaght Hospital, Dublin, Ireland
| | - Umair Aleem
- Department of Gastroenterology, Tallaght Hospital, Dublin, Ireland
| | - Roisin Egan
- Department of Gastroenterology, Tallaght Hospital, Dublin, Ireland
| | | | - Jafaar Mohamad
- Department of Gastroenterology, Tallaght Hospital, Dublin, Ireland
| | - Deidre McNamara
- Department of Gastroenterology, Tallaght Hospital, Dublin, Ireland.,Trinity Academic Gastroenterology Group, Department of Clinical Medicine, Trinity College, Dublin, Ireland
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Pavlovsky M, Sarig O, Eskin-Schwartz M, Malchin N, Bochner R, Mohamad J, Gat A, Peled A, Hafner A, Sprecher E. 由PSENEN始祖突变引起的结合了化脓性汗腺炎与道林-德戈斯(Dowling-Degos)病的表现型. Br J Dermatol 2018. [DOI: 10.1111/bjd.16303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pavlovsky M, Sarig O, Eskin-Schwartz M, Malchin N, Bochner R, Mohamad J, Gat A, Peled A, Hafner A, Sprecher E. A phenotype combining hidradenitis suppurativa with Dowling-Degos disease caused by a founder mutation in PSENEN. Br J Dermatol 2018. [DOI: 10.1111/bjd.16285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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22
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Pavlovsky M, Sarig O, Eskin-Schwartz M, Malchin N, Bochner R, Mohamad J, Gat A, Peled A, Hafner A, Sprecher E. A phenotype combining hidradenitis suppurativa with Dowling-Degos disease caused by a founder mutation in PSENEN. Br J Dermatol 2017; 178:502-508. [DOI: 10.1111/bjd.16000] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2017] [Indexed: 11/28/2022]
Affiliation(s)
- M. Pavlovsky
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - O. Sarig
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - M. Eskin-Schwartz
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
- Department of Human Molecular Genetics and Biochemistry; Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - N. Malchin
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - R. Bochner
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - J. Mohamad
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - A. Gat
- Institute of Pathology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - A. Peled
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - A. Hafner
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - E. Sprecher
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
- Department of Human Molecular Genetics and Biochemistry; Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
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Suely A, Zabed H, Ahmed ABA, Mohamad J, Nasiruddin M, Sahu JN, Ganesan P. Toxicological and hematological effect of Terminalia arjuna bark extract on a freshwater catfish, Heteropneustes fossilis. Fish Physiol Biochem 2016; 42:431-444. [PMID: 26501361 DOI: 10.1007/s10695-015-0149-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 10/20/2015] [Indexed: 06/05/2023]
Abstract
Increasing demand for eco-friendly botanical piscicides and pesticides as replacements for harmful synthetic chemicals has led to investigation of new sources of plant materials. Stem bark of Terminalia arjuna, which has been used as a popular folk medicine since ancient time, was examined for its piscicidal activity. This study aims to determine toxicity of ethanol extract of T. arjuna bark on fresh water stinging catfish (Heteropneustes fossilis), along with evaluation of changes in hematological parameters of the fishes exposed to a lethal concentration. The percent mortality of fishes varied significantly in response to concentrations of the extract and exposure times (between exposure time F = 36.57, p < 0.001; between concentrations F = 39.93, p < 0.001). The lethal concentrations (LC50) of ethanol extract were found to be 12.7, 8.94, 5.63 and 4.71 mg/l for 24, 48, 72 and 96 h, respectively. During acute toxicity test, blood samples of treatment fishes showed significant decreases in the red blood cells count, hematocrit content, hemoglobin concentration, mean corpuscular hemoglobin concentration and plasma protein level when compared to those of the control group, while there were significant increases in the mean corpuscular volume, mean corpuscular hemoglobin, white blood cells count and plasma glucose concentration. These results suggest that T. arjuna bark extract could be considered as a potent piscicide due to its toxic effect on fish, particularly fish hematology.
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Affiliation(s)
- A Suely
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - H Zabed
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - A B A Ahmed
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - J Mohamad
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - M Nasiruddin
- Department of Zoology, University of Chittagong, Chittagong, 4331, Bangladesh
| | - J N Sahu
- Petroleum and Chemical Engineering Program Area, Faculty of Engineering, Institut Teknologi Brunei, Tungku Gadong, P.O. Box 2909, Brunei-Muara, Brunei Darussalam.
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - P Ganesan
- Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
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Baig S, Seevasant I, Mohamad J, Mukheem A, Huri HZ, Kamarul T. Potential of apoptotic pathway-targeted cancer therapeutic research: Where do we stand? Cell Death Dis 2016; 7:e2058. [PMID: 26775709 PMCID: PMC4816162 DOI: 10.1038/cddis.2015.275] [Citation(s) in RCA: 200] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 07/17/2015] [Accepted: 08/25/2015] [Indexed: 12/12/2022]
Abstract
Underneath the intricacy of every cancer lies mysterious events that impel the tumour cell and its posterity into abnormal growth and tissue invasion. Oncogenic mutations disturb the regulatory circuits responsible for the governance of versatile cellular functions, permitting tumour cells to endure deregulated proliferation, resist to proapoptotic insults, invade and erode normal tissues and above all escape apoptosis. This disruption of apoptosis has been highly implicated in various malignancies and has been exploited as an anticancer strategy. Owing to the fact that apoptosis causes minimal inflammation and damage to the tissue, apoptotic cell death-based therapy has been the centre of attraction for the development of anticancer drugs. Increased understanding of the molecular pathways underlying apoptosis has enabled scientists to establish unique approaches targeting apoptosis pathways in cancer therapeutics. In this review, we reconnoitre the two major pathways (intrinsic and extrinsic) targeted cancer therapeutics, steering toward chief modulators of these pathways, such as B-cell lymphoma 2 protein family members (pro- and antiapoptotic), inhibitor of apoptosis proteins, and the foremost thespian of extrinsic pathway regulator, tumour necrosis factor-related apoptosis-inducing agent. Together, we also will have a look from clinical perspective to address the agents (drugs) and therapeutic strategies adopted to target these specific proteins/pathways that have entered clinical trials.
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Affiliation(s)
- S Baig
- Department of Orthopaedic Surgery, Tissue Engineering Group, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
- Institute of Biological Sciences, Faculty of Science, University of Malaysia, Kuala Lumpur 50603, Malaysia
- Department of Orthopaedic Surgery, University of Malaya, Tissue Engineering Group, Faculty of Medicine, Kuala Lumpur 50603, Malaysia. Tel: +60 3 7967 7022; Fax: +60 3 7949 4642; E-mail: (SB) or Tel: +60 3 7949 2061; Fax: +60 3 7949 4642; E-mail: (TK)
| | - I Seevasant
- Department of Orthopaedic Surgery, Tissue Engineering Group, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - J Mohamad
- Institute of Biological Sciences, Faculty of Science, University of Malaysia, Kuala Lumpur 50603, Malaysia
| | - A Mukheem
- Department of Orthopaedic Surgery, Tissue Engineering Group, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - H Z Huri
- Clinical Investigation Centre, University of Malaya Medical Centre, Kuala Lumpur 50603, Malaysia
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - T Kamarul
- Department of Orthopaedic Surgery, Tissue Engineering Group, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
- Clinical Investigation Centre, University of Malaya Medical Centre, Kuala Lumpur 50603, Malaysia
- Department of Orthopaedic Surgery, University of Malaya, Tissue Engineering Group, Faculty of Medicine, Kuala Lumpur 50603, Malaysia. Tel: +60 3 7967 7022; Fax: +60 3 7949 4642; E-mail: (SB) or Tel: +60 3 7949 2061; Fax: +60 3 7949 4642; E-mail: (TK)
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Masrudin SS, Mohamad J. Preventive effect of Pueraria mirifica on testosterone-induced prostatic hyperplasia in Sprague Dawley rats. Andrologia 2015; 47:1153-9. [PMID: 25600492 DOI: 10.1111/and.12396] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/13/2014] [Indexed: 11/29/2022] Open
Abstract
Pueraria mirifica (PM) extract contains phytoestrogen daidzein and genistein. In this study, we investigated the protective effect of PM extract, daidzein and genistein on a testosterone-induced prostatic hyperplasia in rats. Testosterone was administered at 3 mg kg(-1) to rats followed by the PM extract, daidzein and genistein for a period of 30 days with finasteride as positive control. The testosterone level was increased, indicating inhibition of 5α-reductase converting testosterone to dihydrotestosterone. This was confirmed by prostate-specific antigen level that significantly decreased when treated with PM extract, daidzein and genistein. The PM extract, daidzein and genistein reduced the increase in the prostate/body weight ratio in testosterone-induced rats. This gives indication that PM extract, daidzein and genistein possessed protective activity for the treatment of benign prostatic hyperplasia. The analysis of histoarchitechture of the prostate has also shown that there was a significant improvement in prostatic cells of the testosterone-induced rats when treated with PM extract, daidzein and genistein.
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Affiliation(s)
- S S Masrudin
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
| | - J Mohamad
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
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Zahara AM, Lee CC, Fatimah IS, Poh BK, Khairul O, Das S, Mohamad J. Plasma vitamin C and tocotrienols changes in response to dietary supplementation among young male adults. Clin Ter 2010; 161:121-124. [PMID: 20499024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
BACKGROUND AND AIMS Intake of the antioxidant vitamins C and E lowers the oxidative stress. The study aimed to determine plasma concentrations of vitamin C and tocotrienols after supplementation of both vitamins in young male adults. MATERIALS AND METHODS A total of 64 police recruits were randomly assigned to one of these groups: (a) 500 mg vitamin C (Vitamin C), (b) 200 mg Tocovid (Tocotrienol), (c) combination of 500 mg vitamin C and 200 mg Tocovid (Combination) or (d) placebo (Placebo) for eight-weeks of supplementation followed by six-week washout period. RESULTS In Combination group, mean plasma vitamin C concentration significantly increased from baseline 2.86 +/- 1.19 mg/L to 10.37 +/- 1.29 mg/L and 15.63 +/- 1.27 mg/L after four- and eight-week supplementation, respectively. The corresponding figures for alpha-, delta- and gamma-tocotrienols were 9.9 +/- 2.5 ng/ml to 104.1 +/- 19.8 ng/ml and 112.8 +/- 38.0 ng/ml; 2.5 +/- 0.9 ng/ml to 29.9 +/- 7.0 ng/ml and 17.9 +/- 4.7 ng/ml; 19.2 +/- 3.1 ng/ml to 75.2 +/- 24.1 ng/ml and 161.7 +/- 49.9 ng/ml, respectively. In Vitamin C group, plasma vitamin C concentrations were significantly increased. Conversely, concentration of plasma vitamin C in Tocotrienol group increased from baseline of 2.72 +/- 0.20 mg/L to 6.80 +/- 0.63 mg/L and 8.9 +/- 0.77 mg/L respectively. Plasma concentrations of alpha-, delta- and gamma-tocotrienols in this group were significantly elevated. After 6-week washout period, all the elevated concentrations returned to basal levels. CONCLUSION The study showed a good bioavailability of these vitamins and increment due to supplementation.
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Affiliation(s)
- A M Zahara
- Department of Nutrition and Dietetics, Faculty of Allied Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
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