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Lioy VS, Lorenzi JN, Najah S, Poinsignon T, Leh H, Saulnier C, Aigle B, Lautru S, Thibessard A, Lespinet O, Leblond P, Jaszczyszyn Y, Gorrichon K, Varoquaux N, Junier I, Boccard F, Pernodet JL, Bury-Moné S. Dynamics of the compartmentalized Streptomyces chromosome during metabolic differentiation. Nat Commun 2021; 12:5221. [PMID: 34471117 PMCID: PMC8410849 DOI: 10.1038/s41467-021-25462-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 07/21/2021] [Indexed: 02/07/2023] Open
Abstract
Bacteria of the genus Streptomyces are prolific producers of specialized metabolites, including antibiotics. The linear chromosome includes a central region harboring core genes, as well as extremities enriched in specialized metabolite biosynthetic gene clusters. Here, we show that chromosome structure in Streptomyces ambofaciens correlates with genetic compartmentalization during exponential phase. Conserved, large and highly transcribed genes form boundaries that segment the central part of the chromosome into domains, whereas the terminal ends tend to be transcriptionally quiescent compartments with different structural features. The onset of metabolic differentiation is accompanied by a rearrangement of chromosome architecture, from a rather 'open' to a 'closed' conformation, in which highly expressed specialized metabolite biosynthetic genes form new boundaries. Thus, our results indicate that the linear chromosome of S. ambofaciens is partitioned into structurally distinct entities, suggesting a link between chromosome folding, gene expression and genome evolution.
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Affiliation(s)
- Virginia S Lioy
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France.
| | - Jean-Noël Lorenzi
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Soumaya Najah
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Thibault Poinsignon
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Hervé Leh
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Corinne Saulnier
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | | | - Sylvie Lautru
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | | | - Olivier Lespinet
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | | | - Yan Jaszczyszyn
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Kevin Gorrichon
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Nelle Varoquaux
- Université Grenoble Alpes, CNRS, Grenoble INP, TIMC-IMAG, Grenoble, France
| | - Ivan Junier
- Université Grenoble Alpes, CNRS, Grenoble INP, TIMC-IMAG, Grenoble, France
| | - Frédéric Boccard
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Jean-Luc Pernodet
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Stéphanie Bury-Moné
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France.
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Najah S, Saulnier C, Pernodet JL, Bury-Moné S. Design of a generic CRISPR-Cas9 approach using the same sgRNA to perform gene editing at distinct loci. BMC Biotechnol 2019; 19:18. [PMID: 30894153 PMCID: PMC6425556 DOI: 10.1186/s12896-019-0509-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 03/08/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The CRISPR/Cas (clustered regularly interspaced short palindromic repeat and CRISPR-associated nucleases) based technologies have revolutionized genome engineering. While their use for prokaryotic genome editing is expanding, some limitations remain such as possible off-target effects and design constraints. These are compounded when performing systematic genome editing at distinct loci or when targeting repeated sequences (e.g. multicopy genes or mobile genetic elements). To overcome these limitations, we designed an approach using the same sgRNA and CRISPR-Cas9 system to independently perform gene editing at different loci. RESULTS We developed a two-step procedure based on the introduction by homologous recombination of 'bait' DNA at the vicinity of a gene copy of interest before inducing CRISPR-Cas9 activity. The introduction of a genetic tool encoding a CRISPR-Cas9 complex targeting this 'bait' DNA induces a double strand break near the copy of interest. Its repair by homologous recombination can lead either to reversion or gene copy-specific editing. The relative frequencies of these events are linked to the impact of gene editing on cell fitness. In our study, we used this technology to successfully delete the native copies of two xenogeneic silencers lsr2 paralogs in Streptomyces ambofaciens. We observed that one of these paralogs is a candidate-essential gene since its native locus can be deleted only in the presence of an extra copy. CONCLUSION By targeting 'bait' DNA, we designed a 'generic' CRISPR-Cas9 toolkit that can be used to edit different loci. The differential action of this CRISPR-Cas9 system is exclusively based on the specific recombination between regions surrounding the gene copy of interest. This approach is suitable to edit multicopy genes. One such particular example corresponds to the mutagenesis of candidate-essential genes that requires the presence of an extra copy of the gene before gene disruption. This opens new insights to explore gene essentiality in bacteria and to limit off-target effects during systematic CRISPR-Cas9 based approaches.
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Affiliation(s)
- Soumaya Najah
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-Sur-Yvette, France
| | - Corinne Saulnier
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-Sur-Yvette, France
| | - Jean-Luc Pernodet
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-Sur-Yvette, France
| | - Stéphanie Bury-Moné
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-Sur-Yvette, France
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Frikha Dammak D, Zarai Z, Najah S, Abdennabi R, Belbahri L, Rateb ME, Mejdoub H, Maalej S. Antagonistic Properties of Some Halophilic Thermoactinomycetes Isolated from Superficial Sediment of a Solar Saltern and Production of Cyclic Antimicrobial Peptides by the Novel Isolate Paludifilum halophilum. Biomed Res Int 2017; 2017:1205258. [PMID: 28819625 PMCID: PMC5551467 DOI: 10.1155/2017/1205258] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/18/2017] [Indexed: 02/07/2023]
Abstract
This study has focused on the isolation of twenty-three halophilic actinomycetes from two ponds of different salinity and the evaluation of their ability to exert an antimicrobial activity against both their competitors and several other pathogens. From the 23 isolates, 18 strains showed antagonistic activity, while 19 showed activities against one or more of the seven pathogen strains tested. Six strains exhibited consistent antibacterial activity against Gram-negative and Gram-positive pathogens characterized at the physiological and molecular levels. These strains shared only 94-95% 16S rRNA sequence identity with the closely related species of the Thermoactinomycetaceae family. Among them, the potent strain SMBg3 was further characterized and assigned to a new genus in the family for which the name Paludifilum halophilum (DSM 102817T) is proposed. Sequential extraction of the antimicrobial compounds with ethyl acetate revealed that the crude extract from SMBg3 strain had inhibitory effect on the growth of the plant pathogen Agrobacterium tumefaciens and the human pathogens Staphylococcus aureus, Salmonella enterica, Escherichia coli, and Pseudomonas aeruginosa. Based on the HRESI-MS spectral data, the cyclic lipopeptide Gramicidin S and four cyclic dipeptides (CDPs) named cyclo(L-4-OH-Pro-L-Leu), cyclo(L-Tyr-L-Pro), cyclo(L-Phe-L-Pro), and cyclo(L-Leu-L-Pro) were detected in the fermentation broth of Paludifilum halophilum. To our knowledge, this is the first report on the isolation of these compounds from members of the Thermoactinomycetaceae family.
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Affiliation(s)
- Donyez Frikha Dammak
- Unité Biodiversité et Ecosystèmes Aquatiques Environnementaux (UR/11ES/72), Faculté des Sciences de Sfax, Université de Sfax, BP 1171, 3000 Sfax, Tunisia
| | - Ziad Zarai
- Laboratoire de Biochimie et de Génie Enzymatique des Lipases, ENIS, BPW, 1173 Sfax, Tunisia
| | - Soumaya Najah
- Institut de Biologie Integrative, UMR 9198, Université Paris-Sud, Bat 400, 91405 Orsay Cedex, France
| | - Rayed Abdennabi
- Laboratory of Soil Biology, University of Neuchatel, 11 Rue Emile Argand, 2000 Neuchatel, Switzerland
| | - Lassaad Belbahri
- Laboratory of Soil Biology, University of Neuchatel, 11 Rue Emile Argand, 2000 Neuchatel, Switzerland
| | - Mostafa E. Rateb
- School of Science & Sport, University of the West of Scotland, Paisley PA1 2BE, UK
| | - Hafedh Mejdoub
- Laboratoire des Biotechnologies Végétales Appliquées à l'Amélioration des Cultures, FSS, Université de Sfax, BP 1171, 3000 Sfax, Tunisia
| | - Sami Maalej
- Unité Biodiversité et Ecosystèmes Aquatiques Environnementaux (UR/11ES/72), Faculté des Sciences de Sfax, Université de Sfax, BP 1171, 3000 Sfax, Tunisia
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Chakchouk-Mtibaa A, Smaoui S, Ktari N, Sellem I, Najah S, Karray-Rebai I, Mellouli L. Biopreservative Efficacy of Bacteriocin BacFL31 in Raw Ground Turkey Meat in terms of Microbiological, Physicochemical, and Sensory Qualities. Biocontrol Sci 2017; 22:67-77. [PMID: 28659558 DOI: 10.4265/bio.22.67] [Citation(s) in RCA: 14] [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] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The effect of the semi purified bacteriocin BacFL31 at 200 and 400 AU/g on the shelf life of refrigerated raw ground turkey meat was investigated. The microbiological, physicochemical, and sensory properties of the meat samples were examined during refrigerated storage. The findings indicated that BacFL31 treatments were effective (p<0.05) against the proliferation of various spoilage microorganisms and suppressed the growth of Listeria monocytogenes and Salmonella Typhimurium. The pH, % Met-MB, and TBA-RS values of the treated samples were lower (p<0.05) than those of their control samples. The addition of BacFL31 extended the shelf life and enhanced the sensory attributes of the turkey meat samples during refrigerated storage. These results suggest that BacFL31 could be considered a promising candidate for future application as an additive to preserve the raw turkey meat during storage at 4℃.
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Affiliation(s)
| | - Slim Smaoui
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax
| | - Naourez Ktari
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax
| | - Imen Sellem
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax
| | - Soumaya Najah
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax
| | - Ines Karray-Rebai
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax
| | - Lotfi Mellouli
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax
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Smaoui S, Hsouna AB, Lahmar A, Ennouri K, Mtibaa-Chakchouk A, Sellem I, Najah S, Bouaziz M, Mellouli L. Bio-preservative effect of the essential oil of the endemic Mentha piperita used alone and in combination with BacTN635 in stored minced beef meat. Meat Sci 2016; 117:196-204. [PMID: 26995774 DOI: 10.1016/j.meatsci.2016.03.006] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 03/03/2016] [Accepted: 03/05/2016] [Indexed: 01/11/2023]
Abstract
The major compounds in Mentha piperita essential oil (EOMP) were menthol (33.59%) and iso-menthone (33%). The biopreservative effect of EOMP used alone at 0.25 or 0.5% and in combination with the semi-purified bacteriocin BacTN635 at 500 or 1000AU/g, on minced beef meat was evaluated by microbiological, physicochemical and sensory analyses during storage at 4°C for 21days. EOMP used alone limited the microbial deterioration of minced meat (P<0.05). Furthermore, the combination between EOMP and BacTN635 led to a decrease in TBARS values and slowed down the accumulation of MetMb. This combination was more efficient (P<0.05) against microflora proliferation and enhanced the sensory acceptability extending thus the shelf life of meat beef by approximately 7days. On the basis of these results, physicochemical and sensorial parameters could be used for constructing regression models to predict overall acceptability. Overall, the strongest preservative effect was achieved by using the combination of EOMP at 0.5% with BacTN535 at 1000AU/g.
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Affiliation(s)
- Slim Smaoui
- Laboratory of Microorganisms and Biomolecules of the Center of Biotechnology of Sfax-Tunisia, Road of Sidimansour, Km 6, B.P. 1117, 3018 Sfax, Tunisia
| | - Anis Ben Hsouna
- Laboratory of Microorganisms and Biomolecules of the Center of Biotechnology of Sfax-Tunisia, Road of Sidimansour, Km 6, B.P. 1117, 3018 Sfax, Tunisia
| | - Aida Lahmar
- Laboratory of Microorganisms and Biomolecules of the Center of Biotechnology of Sfax-Tunisia, Road of Sidimansour, Km 6, B.P. 1117, 3018 Sfax, Tunisia
| | - Karim Ennouri
- Laboratory of Microorganisms and Biomolecules of the Center of Biotechnology of Sfax-Tunisia, Road of Sidimansour, Km 6, B.P. 1117, 3018 Sfax, Tunisia
| | - Ahlem Mtibaa-Chakchouk
- Laboratory of Microorganisms and Biomolecules of the Center of Biotechnology of Sfax-Tunisia, Road of Sidimansour, Km 6, B.P. 1117, 3018 Sfax, Tunisia
| | - Imen Sellem
- Laboratory of Microorganisms and Biomolecules of the Center of Biotechnology of Sfax-Tunisia, Road of Sidimansour, Km 6, B.P. 1117, 3018 Sfax, Tunisia
| | - Soumaya Najah
- Laboratory of Microorganisms and Biomolecules of the Center of Biotechnology of Sfax-Tunisia, Road of Sidimansour, Km 6, B.P. 1117, 3018 Sfax, Tunisia
| | | | - Lotfi Mellouli
- Laboratory of Microorganisms and Biomolecules of the Center of Biotechnology of Sfax-Tunisia, Road of Sidimansour, Km 6, B.P. 1117, 3018 Sfax, Tunisia.
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Chakchouk-Mtibaa A, Elleuch L, Smaoui S, Najah S, Sellem I, Abdelkafi S, Mellouli L. An antilisterial bacteriocin BacFL31 produced by Enterococcus faecium FL31 with a novel structure containing hydroxyproline residues. Anaerobe 2014; 27:1-6. [PMID: 24583094 DOI: 10.1016/j.anaerobe.2014.02.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 02/05/2014] [Accepted: 02/17/2014] [Indexed: 11/19/2022]
Abstract
A new bacterium called FL31, which was selected for its antimicrobial activity against the pathogenic bacterium Listeria monocytogenes, was identified as Enterococcus faecium and noted to produce an antibacterial proteinaceous substance (BacFL31). The active peptide from the cell-free supernatant of E. faecium FL31 was purified in four steps and the results revealed a single band with an estimated molecular mass of approximately 3.5 kDa. The N-terminal amino acid sequence of the purified BacFL31 "GLEESXGHXGQXGPXGPXGAXGP" (X = hydroxyproline) showed the presence of six hydroxyproline residues. It displayed a bactericidal mode of action against L. monocytogenes. Its application at 400 AU/g was also noted to constitute an effective approach for preventing the contamination and growth of the pathogenic bacterium L. monocytogenes during the storage of minced beef meat at 4 °C.
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Affiliation(s)
- Ahlem Chakchouk-Mtibaa
- Laboratoire de Microorganismes et de Biomolécules du Centre de Biotechnologie de Sfax, Route de Sidi Mansour Km 6, B. P. 1177, 3018 Sfax, Tunisia
| | - Lobna Elleuch
- Laboratoire de Microorganismes et de Biomolécules du Centre de Biotechnologie de Sfax, Route de Sidi Mansour Km 6, B. P. 1177, 3018 Sfax, Tunisia
| | - Slim Smaoui
- Laboratoire de Microorganismes et de Biomolécules du Centre de Biotechnologie de Sfax, Route de Sidi Mansour Km 6, B. P. 1177, 3018 Sfax, Tunisia
| | - Soumaya Najah
- Laboratoire de Microorganismes et de Biomolécules du Centre de Biotechnologie de Sfax, Route de Sidi Mansour Km 6, B. P. 1177, 3018 Sfax, Tunisia
| | - Imen Sellem
- Laboratoire de Microorganismes et de Biomolécules du Centre de Biotechnologie de Sfax, Route de Sidi Mansour Km 6, B. P. 1177, 3018 Sfax, Tunisia
| | - Slim Abdelkafi
- Département de Génie Biologique de l'Ecole Nationale d'Ingénieurs de Sfax, Route de Sokra Km 3,5, 3018 Sfax, Tunisia
| | - Lotfi Mellouli
- Laboratoire de Microorganismes et de Biomolécules du Centre de Biotechnologie de Sfax, Route de Sidi Mansour Km 6, B. P. 1177, 3018 Sfax, Tunisia.
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Smaoui S, Elleuch L, Ben Salah R, Najah S, Chakchouk-Mtibaa A, Sellem I, Besbes S, Mellouli L. Efficient role of BacTN635 on the safety properties, sensory attributes, and texture profile of raw minced meat beef and chicken breast. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2014; 31:218-25. [DOI: 10.1080/19440049.2013.873144] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Echchilali K, Lamrani F, Alaoui F, Najah S, Moudatir M, Elkabli H. Sclérodermie systémique chez l’homme – 16 cas. Rev Med Interne 2012. [DOI: 10.1016/j.revmed.2012.03.243] [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: 11/16/2022]
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Najah S, Lamrani F, Alaoui F, Drabo A, Moudatir M, El Kabli H, Benamour S. Syndrome de Vogkt-Koyanagi-Harada (19 cas). Rev Med Interne 2011. [DOI: 10.1016/j.revmed.2011.10.141] [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: 11/17/2022]
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Lamrani F, Najah S, Alaoui F, Alaoui F, Drabo A, Bouissar W, Kabli H, Benamour S. Atteinte pulmonaire au cours de la sclérodermie systémique. Étude de 80 cas. Rev Med Interne 2010. [DOI: 10.1016/j.revmed.2010.10.188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Najah S, Lamrani F, Moudatir M, Ettaldi N, Jabbouri R, Alaoui F, Kabli HE, Benamour S. Le syndrome de Gougerot-Sjögren secondaire. 136 cas. Rev Med Interne 2010. [DOI: 10.1016/j.revmed.2010.10.203] [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: 10/18/2022]
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12
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Ayoub A, Najah S. [Current aspects of tuberculosis in southern Tunisia (Sfax region)]. Tunis Med 1984; 62:345-9. [PMID: 6528418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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13
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Kammoun R, Yousfi H, Najah S. [200 cases of allergic asthma treated with specific desensitization]. Tunis Med 1984; 62:217-20. [PMID: 6528399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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14
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Najah S, Tchekel I. [Results of treatment of tuberculosis 12 months after initiating treatment]. Tunis Med 1979; 57:77-9. [PMID: 553351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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15
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Najah S, Birkowska KS, Charbonneau P, Tchekel I. [Several epidemiological considerations concerning pulmonary tuberculosis occurring in central and southern Tunis]. Tunis Med 1978; 56:339-44. [PMID: 757022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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16
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Najah S, Birkowska KS, Bouricha M. [Acute intestinal occlusion caused by hypertrophic tuberculosis of the transverse colon]. Tunis Med 1977; 55:179-81. [PMID: 919047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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17
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Najah S, Birkowska KS. [Tuberculosis of the transverse colon]. Tunis Med 1977; 55:105-7. [PMID: 898299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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18
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Najah S, Birkowska KS. [Traumatic diaphragmatic hernias in children with thoracic symptomology]. Tunis Med 1976; 54:867-75. [PMID: 1025831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Najah S, Sawicz Birkowska K, Bouricha M. [Odyssey of the diagnosis of an intrathoracic opacity (development of a heteroplastic dysembryoma in the thymic bed)]. Tunis Med 1976; 54:783-8. [PMID: 1025819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Sawicz-Birkowska K, Najah S. [Post-traumatic diaphragmatic hernia in a 9-year-old boy complicated by gastric torsion]. Wiad Lek 1976; 29:437-40. [PMID: 1258483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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21
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Najah S, Sawicz Birkowska K. [Thoracic hydatidosis in Tunisia]. Tunis Med 1976; 54:480-6. [PMID: 936307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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22
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Sawicz-Birkowska K, Najah S. [Tuberculosis of the breast]. Wiad Lek 1975; 28:1931-3. [PMID: 1239126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Najah S, Birkowska C, Bouricha M. [Pseudo-surgical aspects of intestino-peritoneal tuberculosis]. Tunis Med 1975; 53:199-202. [PMID: 1229011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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24
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Najah S, Birkowska C. [Tuberculosis of the breast]. Tunis Med 1975; 53:197-8. [PMID: 1229010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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