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Bennani H, Raiteb M, Mezouari EE, Zyani M, Moutaj R. Cutaneous Larva Migrans. Clin Lab 2024; 70. [PMID: 38623662 DOI: 10.7754/clin.lab.2023.231008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
BACKGROUND Cutaneous larva migrans (CLM) is a helminthic infection found in tropical areas. It is commonly seen in patients in contact with soil contaminated by cat and dog hookworm larvae. CLM manifests as an erythematous, serpiginous, and pruritic cutaneous eruption. We present a case of a 27-year-old female with a serpiginous lesion on the plantar surface of the right foot. METHODS AND RESULTS The patient was prescribed Albendazole at 400 mg twice a day for three days. After treatment, the lesion and pruritus have decreased in severity. CONCLUSIONS Hookworm-related CLM is diagnosed clinically based on the typical clinical presentation. Clinicians need to be aware of the possibility of hookworm-related CLM with a history of travel to tropical areas, especially walking barefoot.
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Bennani H, Guennouni M, Ouarradi AE, Hanchi AL, Soraa N. Microbiological profile of multidrug resistant bacteria before and during COVID-19 in CHU Mohammed VI. Iran J Microbiol 2023; 15:771-778. [PMID: 38156298 PMCID: PMC10751609 DOI: 10.18502/ijm.v15i6.14138] [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] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Background and Objectives A new type of corona virus has caused Corona virus disease-19 and, subsequently, a global pandemic. All individuals are prone to the disease, so drastic measures were taken to prevent its spread. This study aimed to evaluate the impact of COVID-19 on the progression of the antimicrobial resistance rate by comparing two periods: before and during COVID-19. Materials and Methods We used a cross-sectional design to investigate the Antimicrobial Resistance (AMR) rate before (03/2019 to 03/2020) and during COVID-19 (03/2020 to 03/2021) in a University Hospital in Marrakech. The data were analyzed using SPSS Version 25.0. Results Among the 7106 specimens, there was a significant increase in the multidrug-resistant bacterial from 27.38% to 35.87% during COVID-19 (p<0.001), particularly in blood culture, cerebrospinal fluid, catheter, and pus. However, there was a non-significant change in puncture fluid, expectoration, protected distal sampling, joint fluid, stool culture, and genital sampling. A decrease in Multidrug-resistant bacteria (MDRB) was observed only in cytobacteriological urine tests (p<0.05). According to species, there was an increase in extended-spectrum beta-lactamase-producing Enterobacteriaceae, carbapenem-resistant Enterobacteriaceae, and methicillin-resistant Staphylococcus aureus. Conclusion In our study, it is particularly noticeable that the MDRB has increased. These results highlight the importance that the pandemic has not been able to slow the progression.
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Affiliation(s)
- Hind Bennani
- Laboratory of Microbiology, Mohamed VI University Hospital Center, Marrakesh, Morocco
- Laboratory of Microbiology, Faculty of Medicine and Pharmacy, Cadi Ayyad University, Marrakesh, Morocco
| | - Morad Guennouni
- Department of Science and Technology Team, Higher School of Education and Training, Chouaib Doukkali University, El Jadida, Morocco
- Laboratory of Health Sciences and Technologies, Higher Institute of Health Sciences of Settat, Hassan First University of Settat, Settat, Morocco
| | - Assia El Ouarradi
- Laboratory of Microbiology, Mohamed VI University Hospital Center, Marrakesh, Morocco
- Laboratory of Microbiology, Faculty of Medicine and Pharmacy, Cadi Ayyad University, Marrakesh, Morocco
| | - Asmae Lamrani Hanchi
- Laboratory of Microbiology, Mohamed VI University Hospital Center, Marrakesh, Morocco
- Laboratory of Microbiology, Faculty of Medicine and Pharmacy, Cadi Ayyad University, Marrakesh, Morocco
| | - Nabila Soraa
- Laboratory of Microbiology, Mohamed VI University Hospital Center, Marrakesh, Morocco
- Laboratory of Microbiology, Faculty of Medicine and Pharmacy, Cadi Ayyad University, Marrakesh, Morocco
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Bennani H, Ouarradi AE, Lazrek H, Yahyaoui H, Chakour M. A New Case of Association of Megaloblastic Anemia and Pancytopenia of Infants. Clin Lab 2023; 69. [PMID: 37844051 DOI: 10.7754/clin.lab.2023.230420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
BACKGROUND Vitamin B12, or cobalamin deficiency, an infrequent clinical entity in pediatric age, is found almost solely in breastfed infants whose mothers are purely vegetarian, non-supplemented or with pernicious anemia. Megaloblastic anemia in infants presents with generalized weakness or irritability. METHODS Diagnosis is usually centered on complete blood count, vitamin dosing, and peripheral smear, which may show macrocytes, hypersegmented neutrophils, reticulocytopenia and a raised mean corpuscular volume (MCV ˃ 100 fL). Pancytopenia has also been noted. RESULTS We report an exclusive breastfed nine-month-old female child who presented with irritability, developmental delay, and difficulties in introducing new foods. Her initial blood count revealed pancytopenia. Vitamin B12 levels were found to be reduced. Maternal levels of Vitamin B12 were also found to be borderline low. The child was treated as per protocols, and improvement was evidenced with the return of hematological parameters to the regular and gradual advancement of milestones. CONCLUSIONS We aim to underscore the importance of megaloblastic anemia as an important and rare cause of anemia in infancy.
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Lkharrat FZ, Bouchal S, Bennani H, Akammar A, El Bouardi N, Haloua M, Alami B, Boubbou M, Faouzi Belahcen M, Maaroufi M, Alaoui Lamrani MY. Management of a recurrent stroke due to a carotid web. J Med Vasc 2023; 48:136-141. [PMID: 37914458 DOI: 10.1016/j.jdmv.2023.08.002] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 08/16/2023] [Indexed: 11/03/2023]
Abstract
Carotid web is a rare intraluminal parietal protrusion in the carotid artery. This vascular anomaly mostly occurs at the bifurcation causing turbulent flow, and is responsible of thrombi formation associated with embolic ischemic events. We report the case of a 35-year-old woman, with no medical history, who presented a recurrent middle cerebral artery (MCA) occlusion within twelve hours caused by a carotid bulb web. Although considered as a rare entity, carotid web is associated with the risk of recurrent strokes in the MCA territory and especially in the absence of the typically recognized risk factors. The key imaging is the CT angiography that shows the web, the cerebral artery occlusion, and the outcome appreciation. Therapeutic strategy associates antithrombotic treatment and operative management with stenting of the carotid web or endarterectomy.
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Affiliation(s)
- F-Z Lkharrat
- Radiology Department, CHU Hassan II, University Sidi Mohammed Ben Abdellah, Fez, Morocco.
| | - S Bouchal
- Neurology Department, CHU Hassan II, University Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - H Bennani
- Radiology Department, CHU Hassan II, University Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - A Akammar
- Radiology Department, CHU Hassan II, University Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - N El Bouardi
- Radiology Department, CHU Hassan II, University Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - M Haloua
- Radiology Department, CHU Hassan II, University Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - B Alami
- Radiology Department, CHU Hassan II, University Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - M Boubbou
- Radiology Department, CHU Hassan II, University Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - M Faouzi Belahcen
- Neurology Department, CHU Hassan II, University Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - M Maaroufi
- Radiology Department, CHU Hassan II, University Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - M Y Alaoui Lamrani
- Radiology Department, CHU Hassan II, University Sidi Mohammed Ben Abdellah, Fez, Morocco
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Nachate S, Rouhi S, Ouassif H, Bennani H, Hachimi A, Mouaffak Y, Younous S, Bennaoui F, El Idrissi Slitine N, Maoulainine FMR, Lamrani Hanchi A, Soraa N. Multidrug-Resistant Bacteria Isolated from Blood Culture Samples in a Moroccan Tertiary Hospital: True Bacteremia or Contamination? Infect Drug Resist 2022; 15:5691-5704. [PMID: 36193293 PMCID: PMC9526425 DOI: 10.2147/idr.s373065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 08/26/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose To demonstrate the relevance of clinico-biological correlation in the interpretation of positive blood cultures (BC) for multidrug-resistant (MDR) bacteria, among adult and pediatric patients, in order to distinguish between true bacteremia (TB) and contaminations and to evaluate the impact on patient management. Patients and Methods This six-month study was conducted at Mohammed VI University Hospital in Marrakech. All MDR bacteria isolated from BCs carried out on hospitalized patients during this period were included. For each positive BC to MDR microorganism, demographic and clinical characteristics, laboratory findings, therapeutic and evolution data were collected. Results TB was considered in 157 (94.6%) of the 166 positive-culture episodes for MDR bacteria, while 9 (5.4%) were classified as false-positive. Contamination rate was 0.2% (9/3824). TB and contaminations occurred mainly in intensive care units (ICUs), with the neonatal ICU being the most concerned (p = 0.016). Clinical signs of sepsis were present in all TB patients, with a significant difference between the two groups (p = 0.000). CRP values were higher in the TB group (p = 0.000). The most isolated true pathogens were ESBL-producing Enterobacterales (50%) and carbapenem-resistant Enterobacterales (33.3%). They also predominated in contaminated BCs. Isolation of the same microorganism from other sites was significantly associated with TB (p = 0.012). In contrast to the contaminations group, the difference in the clinical course of TB patients, according to whether or not they received appropriate probabilistic antibiotics, was statistically significant (p = 0.000). These patients had longer hospital stays and longer durations of antibiotic therapy. The overall mortality rate was 39.6%. Conclusion Distinguishing between MDR-positive BCs representing clinically significant bacteremia or simple contamination requires a careful clinical, biological, and microbiological confrontation of each MDR positive BC in order to avoid unnecessary overuse of broad-spectrum antibiotics and thus reduce resistance selective pressure.
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Affiliation(s)
- Soumia Nachate
- Department of Microbiology, Mohamed VI University Hospital Center, Marrakech, Morocco
- Correspondence: Soumia Nachate, Department of Microbiology, Mohamed VI University Hospital Center, BP2360 Principal, Ibn Sina Avenue, Marrakech, 40160, Morocco, Tel +212 658956312, Email
| | - Salma Rouhi
- Department of Microbiology, Mohamed VI University Hospital Center, Marrakech, Morocco
| | - Hicham Ouassif
- Department of Microbiology, Mohamed VI University Hospital Center, Marrakech, Morocco
| | - Hind Bennani
- Department of Microbiology, Mohamed VI University Hospital Center, Marrakech, Morocco
| | - Abdelhamid Hachimi
- Department of Intensive Care, Mohamed VI University Hospital Center, Marrakech, Morocco
| | - Youssef Mouaffak
- Pediatric Intensive Care Department, Mohamed VI University Hospital Center, Marrakech, Morocco
| | - Said Younous
- Pediatric Intensive Care Department, Mohamed VI University Hospital Center, Marrakech, Morocco
| | - Fatiha Bennaoui
- Neonatal Intensive Care Department, Mohamed VI University Hospital Center, Marrakech, Morocco
| | | | | | - Asmae Lamrani Hanchi
- Department of Microbiology, Mohamed VI University Hospital Center, Marrakech, Morocco
| | - Nabila Soraa
- Department of Microbiology, Mohamed VI University Hospital Center, Marrakech, Morocco
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Bennani H, El Ouarradi A, Hanchi AL, Soraa N. A young child with acute perforated appendicitis due to Comamonas kerstersii: a rare case report. Pan Afr Med J 2022; 41:186. [PMID: 35655686 PMCID: PMC9120739 DOI: 10.11604/pamj.2022.41.186.29615] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 05/05/2021] [Accepted: 03/12/2022] [Indexed: 11/11/2022] Open
Abstract
Comamonas species are rarely associated with human infections. Recent reports found that Comamonas kerstersii was associated with severe diseases such as abdominal infection and bacteremia. However, Comamonas kerstersii may be confused with Comamonas testosteroni using the automatic bacterial identification systems currently available. An 8-year-old boy who had a right iliac fossa pain and classic migration of pain at the temperature of 38.9°C. The positive strain of aerobic and anaerobic bottles of blood cultures was identified. The patient was diagnosed as acute peritonitis and perforated appendix with abdominal abscess. The bacterium was identified by routine methods, MALDI-TOF-MS. The patient was treated with exploratory laparotomy, appendectomy, tube drainage, and prescribing antibiotic treatment. The patient was discharged with complete recovery. The organisms were confirmed as Comamonas kerstersii by MALDI-TOFMS and a combination of the other results. Our findings suggest that Comamonas kerstersii infection occurs most often in association with perforated appendix and bacteremia. We presume that Comamonas kerstersii is an opportunistic pathogen or commensal with the digestive tract and appendix bacteria.
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Affiliation(s)
- Hind Bennani
- Faculty of Medicine and Pharmacy of Marrakech Cadi Ayyad University, Microbiology Department, Mohamed VI University Hospital, Marrakech, Morocco
| | - Assia El Ouarradi
- Faculty of Medicine and Pharmacy of Marrakech Cadi Ayyad University, Microbiology Department, Mohamed VI University Hospital, Marrakech, Morocco
| | - Asmaa Lamrani Hanchi
- Faculty of Medicine and Pharmacy of Marrakech Cadi Ayyad University, Microbiology Department, Mohamed VI University Hospital, Marrakech, Morocco
| | - Nabila Soraa
- Faculty of Medicine and Pharmacy of Marrakech Cadi Ayyad University, Microbiology Department, Mohamed VI University Hospital, Marrakech, Morocco
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Ramanan D, Palla S, Bennani H, Polonowita A, Farella M. Oral behaviours and wake-time masseter activity in patients with masticatory muscle pain. J Oral Rehabil 2021; 48:979-988. [PMID: 34185872 DOI: 10.1111/joor.13219] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 01/01/2021] [Revised: 06/06/2021] [Accepted: 06/24/2021] [Indexed: 12/26/2022]
Abstract
BACKGROUND Little is known about wake-time masseter activity of patients with masticatory muscle pain in real-life settings. OBJECTIVES The aims of this study were (1) to assess wake-time masseter activity of women with masticatory muscle pain (MMP) and compare it with that of pain-free women; and (2) to investigate the association between objectively measured masseter contractions and self-reported oral behaviours. METHODS Adult women (N = 27) diagnosed with MMP were age-matched with pain-free women (N = 26). The electromyographic (EMG) activity of the masseter muscle when awake was recorded unilaterally for two consecutive days. The number of contraction episodes and relative contraction time (%) were calculated using cut-off thresholds of 3%, 5% and 10% of maximum voluntary contraction (MVC). Self-reported daytime oral activity was assessed using the Oral Behaviours Checklist (OBC, items 3-21). Data were analysed using univariate tests and mixed-model analyses. RESULTS The number of contraction episodes was similar between groups for all detection thresholds, but the relative contraction time at the lower detection thresholds (i.e. 3% MVC and 5% MVC) was significantly longer (1.5-fold) in the MMP than in the pain-free group. The OBC scores were significantly higher in the women with MMP than in controls, but no positive association could be found between EMG variables and OBC scores. CONCLUSION Women with MMP engage in low-level masseter muscle contractions, which last longer than those of pain-free controls. There was no relationship between self-reported oral behaviours and masseter activity when awake. These findings support the notion that prolonged low-level clenching when awake may play a role in the pathophysiology of MMP.
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Affiliation(s)
- D Ramanan
- Discipline of Orthodontics, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - S Palla
- University of Zurich, Zurich, Switzerland
| | - H Bennani
- Discipline of Orthodontics, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - A Polonowita
- Discipline of Oral Medicine, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - M Farella
- Discipline of Orthodontics, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand.,Department of Surgical Sciences, University of Cagliari, Cagliari, Italy
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Bennani H, Alami B, Hajjar C, Quenum L, Haloua M, Boubbou M, Belahcen F, Maâroufi M, Alaoui Lamrani MY. Symptomatic carotid web: About a rare ultrasound finding. J Med Vasc 2020; 45:284-287. [PMID: 32862986 DOI: 10.1016/j.jdmv.2020.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/14/2020] [Indexed: 11/28/2022]
Affiliation(s)
- H Bennani
- Radiology department, CHU Hassan II, 1, rue El Badie, route Immouzer, Fès, Morocco.
| | - B Alami
- Radiology department, CHU Hassan II, 1, rue El Badie, route Immouzer, Fès, Morocco
| | - C Hajjar
- Radiology department, CHU Hassan II, 1, rue El Badie, route Immouzer, Fès, Morocco
| | - L Quenum
- Radiology department, CHU Hassan II, 1, rue El Badie, route Immouzer, Fès, Morocco
| | - M Haloua
- Radiology department, CHU Hassan II, 1, rue El Badie, route Immouzer, Fès, Morocco
| | - M Boubbou
- Radiology department, CHU Hassan II, 1, rue El Badie, route Immouzer, Fès, Morocco
| | - F Belahcen
- Neurology department, CHU Hassan II, Fès, Morocco
| | - M Maâroufi
- Radiology department, CHU Hassan II, 1, rue El Badie, route Immouzer, Fès, Morocco
| | - M Y Alaoui Lamrani
- Radiology department, CHU Hassan II, 1, rue El Badie, route Immouzer, Fès, Morocco
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Debliquis A, Baseggio L, Bouyer S, Guy J, Garnache-Ottou F, Genevieve F, Mayeur-Rousse C, Letestu R, Chapuis N, Harrivel V, Bennani H, Lachot S, Loosveld M, Nicolino-Brunet C, Pérès M, Roussel M, Veyrat-Masson R, Jacob MC, Drenou B. Multicentric MFI30 study: Standardization of flow cytometry analysis of CD30 expression in non-Hodgkin lymphoma. Cytometry B Clin Cytom 2020; 100:488-496. [PMID: 32803917 DOI: 10.1002/cyto.b.21940] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 06/15/2020] [Accepted: 07/15/2020] [Indexed: 02/03/2023]
Abstract
CD30 transmembrane receptor, a member of the tumor necrosis factor receptor family, is expressed in different lymphomas. Brentuximab vedotin (BV), a CD30 monoclonal antibody (Ab)-drug conjugate, is effective in CD30-positive lymphomas. However, the response to BV is not always correlated to CD30 expression detected by immunohistochemistry (IHC). The objectives of this study were to standardize and evaluate CD30 intensity by flow cytometry (FCM) in non-Hodgkin's lymphomas. Twelve centers analyzed 161 cases on standardized cytometers using normalized median fluorescence intensity (nMFI30) of three different Abs, of which one clone can recognize the same epitope as BV. FCM distinguished four groups of cases: negative group (n = 110) which showed no expression with the three clones; high positive group (n = 13) which gave nMFI30 > 5% with all tested clones; dim positive group (n = 17) which showed nMFI30 > 1% with all tested clones and <5% for at least one; discordant group (n = 21) with positive and negative expression of the different clones. In consistency with the literature, CD30 was positive in all anaplastic large cell lymphomas, in some diffuse large B-cell lymphomas (DLBCL), and in other rare lymphomas. FCM results were concordant with those of IHC in 77% of cases. Discrepancies could be explained by clones-related differences, microenvironment, or intracytoplasmic staining. Interestingly, FCM was more sensitive than IHC in 11% of cases, especially in DLBCL. Multicenter standardized FCM of specific CD30 could improve case detection and extend the treatment of BV to various CD30-positive lymphomas.
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Affiliation(s)
- Agathe Debliquis
- Laboratoire d'Hématologie, Groupe Hospitalier de la région Mulhouse Sud Alsace, Mulhouse, France
| | - Lucile Baseggio
- Laboratoire d'Hématologie Cellulaire, Groupement Hospitalier Sud/Hospices Civils de Lyon, Lyon, France
| | - Sabrina Bouyer
- Service d'Hématologie Biologique, Center Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Julien Guy
- Service d'Hématologie biologique, Center Hospitalier Universitaire de Dijon, Dijon, France
| | | | - Franck Genevieve
- Laboratoire d'Hématologie, Center Hospitalier Universitaire d'Angers, Fédération Hospitalo-Universitaire "Grand Ouest Against Leukemia" (FHU GOAL), Angers, France
| | - Caroline Mayeur-Rousse
- Laboratoire d'Hématologie, Center Hospitalier Universitaire de Strasbourg, Strasbourg, France
| | - Remi Letestu
- Service d'Hématologie Biologique, Hôpital Avicenne HUPSSD, AP-HP, Bobigny, France
| | - Nicolas Chapuis
- Service d'Hématologie Biologique, Hopital Cochin APHP, Paris, France
| | | | - Hind Bennani
- Laboratoire de biologie, Hopital Foch, Suresnes, France
| | - Sebastien Lachot
- Service d'Hématologie Biologie, Center Hospitalier Universitaire de Tours, Tours, France
| | - Marie Loosveld
- Laboratoire d'Hématologie, Center Hospitalier Universitaire de Marseille, CNRS, INSERM, CIML, Aix Marseille Université, Marseille, France
| | - Corinne Nicolino-Brunet
- Laboratoire d'Hématologie et Biologie Vasculaire du Pr Françoise Dignat George, Center Hospitalier Universitaire La Conception, Marseille, France
| | - Michaël Pérès
- Laboratoire d'Hématologie, IUCT-Oncopole, CHU de Toulouse, Toulouse, France
| | - Mikael Roussel
- Pôle Biologie, Center Hospitalier Universitaire de Rennes, Rennes, France
| | - Richard Veyrat-Masson
- Service d'Hématologie Biologique, Hôpital Estaing, Center Hospitalier Universitaire de Clermont-Ferrand, Clermont-Ferrand, France
| | - Marie-Christine Jacob
- Laboratoire d'Immunologie, Center Hospitalier Universitaire de Grenoble-Alpes, La Tronche, France
| | - Bernard Drenou
- Laboratoire d'Hématologie, Groupe Hospitalier de la région Mulhouse Sud Alsace, Mulhouse, France
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Baseggio L, Debliquis A, Jacob M, Bouyer S, Bennani H, Chapuis N, Garnache Ottou F, Genevieve F, Guy J, Harrivel V, Letestu R, Mayeur-Rousse C, Drenou B. MULTICENTRIC MFI30 STUDY: STANDARDIZATION OF CD30 EXPRESSION BY FLOW CYTOMETRY IN NON-HODGKIN LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.23_2630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- L. Baseggio
- Laboratoire d'Hématologie; Hospice Civils de Lyon/Groupement Hospitalier SUD; Pierre Benite France
| | - A. Debliquis
- Laboratoire Hématologie; Groupe Hospitalier de la Région Mulhouse Sud Alsace (GHRMSA); Mulhouse France
| | - M. Jacob
- Laboratoire Immunologie; CHU Grenoble; Grenoble France
| | - S. Bouyer
- Laboratoire de Biologie; CHU Poitiers; Poitiers France
| | - H. Bennani
- Laboratoire de Biologie; Hôpital Foch; Suresnes France
| | - N. Chapuis
- Laboratoire Hématologie; APHP-Cochin; Paris France
| | | | - F. Genevieve
- Laboratoire Hématologie/Institut de Biologie/Cytométrie en Flux; CH Angers; Angers France
| | - J. Guy
- Laboratoire Hématologie/Plateforme de Cytométrie; CHU-Dijon; Dijon France
| | - V. Harrivel
- Centre de Biologie Humaine; CHU Amiens; Amiens France
| | - R. Letestu
- Laboratoire Hématologie; APHP-Avicenne; Bobigny France
| | | | - B. Drenou
- Laboratoire Hématologie; Groupe Hospitalier de la Région Mulhouse Sud Alsace (GHRMSA); Mulhouse France
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Bennani H, Asfalou I, Ait Houssassa M. P6326Mitral commissurotomy: wich one between the three techniques gives a better long term outcome? Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6326] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Korfel A, Nowosielski M, Pardo-Moreno J, Penalver FJ, Buda G, Bennani H, Costopoulos M, Le Garff-Tavernier M, Soussain C, Schmid M, Orfao JA, Glantz M. How to facilitate early diagnosis of CNS involvement in malignant lymphoma. Expert Rev Hematol 2016; 9:1081-1091. [PMID: 27677656 DOI: 10.1080/17474086.2016.1242405] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 12/29/2022]
Abstract
INTRODUCTION Making the diagnosis of secondary CNS involvement in lymphoma can be difficult due to unspecific signs and symptoms, limited accessibility of brain/myelon parenchyma and low sensitivity and/or specifity of imaging and cerebrospinal fluid (CSF) examination currently available. Areas covered: MRI of the total neuroaxis followed by CSF cytomorphology and flow cytometry are methods of choice when CNS lymphoma (CNSL) is suspected. To reduce the numerous pitfalls of these examinations several aspects should be considered. New CSF biomarkers might be of potential diagnostic value. Attempts to standardize response criteria are presented. Expert commentary: Diagnosing CNSL remains challenging. Until diagnostic methods combining high sensitivity with high specifity are routinely introduced, high level of awareness and optimal utilization of examinations currently available are needed to early diagnose this potentially devastating disease.
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Affiliation(s)
- Agnieszka Korfel
- a Department of Hematology, Oncology and Tumor Immunology , Charite University Medicine Berlin , Berlin , Germany
| | - Martha Nowosielski
- b Department of Neurology , Medical University Innsbruck , Innsbruck , Austria
| | - Javier Pardo-Moreno
- c Department of Neurology , University Hospital King Juan Carlos , Madrid , Spain
| | | | - Gabriele Buda
- e Department of Hematology and Oncology , University of Pisa , Pisa , Italy
| | - Hind Bennani
- f Department of Biology , Hôpital Foch , Suresnes , France
| | - Myrto Costopoulos
- g Department of Biological Hematology , Pitie Salpetriere Hospital , Paris , France
| | | | - Carole Soussain
- h Department of Hematology , Institut Curie - Hôpital René Huguenin , Paris , France
| | - Mathias Schmid
- i Department of Hematology and Oncology , Stadtspital Triemli Zürich , Zürich , Switzerland
| | - Jose Alberto Orfao
- j Department of Medicine and Cytometry Service , University of Salamanca , Salamanca , Spain
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Abstract
One Health as a concept has been with us for many years, yet it is only recently that it is actively being discussed as a way of mitigating risks in society. Initiatives in the use of this concept require methods to monitor the benefits gained from an holistic approach to health, yet there is an absence of adequate frameworks to measure One Health benefits. This paper explores the problem with a review of the available literature and an examination of methods used. It concludes that most published work on One Health describes how this concept is valuable without trying to estimate the size of benefit or type of value. A framework for measuring the advantages of a One Health approach is needed and, through the process of an international workshop and the development of a One Health business case, the authors are working towards its development.
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Oba Samoussa M, Kettani A, Saile R, Bennani H. P022: Étude de la sensibilité aux antibiotiques et aux extraits de quelques plantes médicinales de certains germes issus de la restauration collective. NUTR CLIN METAB 2014. [DOI: 10.1016/s0985-0562(14)70665-x] [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: 10/24/2022]
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Angelot-Delettre F, Roggy A, Frankel AE, Lamarthee B, Seilles E, Biichle S, Royer B, Deconinck E, Rowinsky EK, Brooks C, Bardet V, Benet B, Bennani H, Benseddik Z, Debliquis A, Lusina D, Roussel M, Solly F, Ticchioni M, Saas P, Garnache-Ottou F. In vivo and in vitro sensitivity of blastic plasmacytoid dendritic cell neoplasm to SL-401, an interleukin-3 receptor targeted biologic agent. Haematologica 2014; 100:223-30. [PMID: 25381130 DOI: 10.3324/haematol.2014.111740] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Blastic plasmacytoid dendritic cell neoplasm is an aggressive malignancy derived from plasmacytoid dendritic cells. There is currently no accepted standard of care for treating this neoplasm, and therapeutic strategies have never been prospectively evaluated. Since blastic plasmacytoid dendritic cell neoplasm cells express high levels of interleukin-3 receptor α chain (IL3-Rα or CD123), antitumor effects of the interleukin-3 receptor-targeted drug SL-401 against blastic plasmacytoid dendritic cell neoplasm were evaluated in vitro and in vivo. The cytotoxicity of SL-401 was assessed in patient-derived blastic plasmacytoid dendritic cell neoplasm cell lines (CAL-1 and GEN2.2) and in primary blastic plasmacytoid dendritic cell neoplasm cells isolated from 12 patients using flow cytometry and an in vitro cytotoxicity assay. The cytotoxic effects of SL-401 were compared to those of several relevant cytotoxic agents. SL-401 exhibited a robust cytotoxicity against blastic plasmacytoid dendritic cell neoplasm cells in a dose-dependent manner. Additionally, the cytotoxic effects of SL-401 were observed at substantially lower concentrations than those achieved in clinical trials to date. Survival of mice inoculated with a blastic plasmacytoid dendritic cell neoplasm cell line and treated with a single cycle of SL-401 was significantly longer than that of untreated controls (median survival, 58 versus 17 days, P<0.001). These findings indicate that blastic plasmacytoid dendritic cell neoplasm cells are highly sensitive to SL-401, and support further evaluation of SL-401 in patients suffering from blastic plasmacytoid dendritic cell neoplasm.
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Affiliation(s)
- Fanny Angelot-Delettre
- INSERM UMR1098, F25020 Besançon Cedex, France Université de Bourgogne Franche-Comté, SFR FED4234, F25000 Besançon Cedex, France EFS Bourgogne Franche-Comté, F25020 Besançon Cedex, France LabEX LipSTIC, ANR-11-LABX-0021, F25020 Besançon Cedex, France
| | - Anne Roggy
- INSERM UMR1098, F25020 Besançon Cedex, France Université de Bourgogne Franche-Comté, SFR FED4234, F25000 Besançon Cedex, France EFS Bourgogne Franche-Comté, F25020 Besançon Cedex, France LabEX LipSTIC, ANR-11-LABX-0021, F25020 Besançon Cedex, France
| | | | - Baptiste Lamarthee
- INSERM UMR1098, F25020 Besançon Cedex, France Université de Bourgogne Franche-Comté, SFR FED4234, F25000 Besançon Cedex, France EFS Bourgogne Franche-Comté, F25020 Besançon Cedex, France LabEX LipSTIC, ANR-11-LABX-0021, F25020 Besançon Cedex, France
| | - Estelle Seilles
- INSERM UMR1098, F25020 Besançon Cedex, France Université de Bourgogne Franche-Comté, SFR FED4234, F25000 Besançon Cedex, France EFS Bourgogne Franche-Comté, F25020 Besançon Cedex, France LabEX LipSTIC, ANR-11-LABX-0021, F25020 Besançon Cedex, France
| | - Sabeha Biichle
- INSERM UMR1098, F25020 Besançon Cedex, France Université de Bourgogne Franche-Comté, SFR FED4234, F25000 Besançon Cedex, France EFS Bourgogne Franche-Comté, F25020 Besançon Cedex, France LabEX LipSTIC, ANR-11-LABX-0021, F25020 Besançon Cedex, France
| | - Bernard Royer
- INSERM UMR1098, F25020 Besançon Cedex, France Université de Bourgogne Franche-Comté, SFR FED4234, F25000 Besançon Cedex, France EFS Bourgogne Franche-Comté, F25020 Besançon Cedex, France LabEX LipSTIC, ANR-11-LABX-0021, F25020 Besançon Cedex, France CHU Besançon, Hematology, France
| | - Eric Deconinck
- INSERM UMR1098, F25020 Besançon Cedex, France Université de Bourgogne Franche-Comté, SFR FED4234, F25000 Besançon Cedex, France EFS Bourgogne Franche-Comté, F25020 Besançon Cedex, France LabEX LipSTIC, ANR-11-LABX-0021, F25020 Besançon Cedex, France CHU Besançon, Hematology, France
| | - Eric K Rowinsky
- Stemline Therapeutics, Inc, 750 Lexington Avenue, 11th Floor, New York, USA
| | - Christopher Brooks
- Stemline Therapeutics, Inc, 750 Lexington Avenue, 11th Floor, New York, USA
| | | | | | - Hind Bennani
- Institut Curie, Hopital René Huguenin, Saint Cloud, France
| | | | | | | | | | | | | | - Philippe Saas
- INSERM UMR1098, F25020 Besançon Cedex, France Université de Bourgogne Franche-Comté, SFR FED4234, F25000 Besançon Cedex, France EFS Bourgogne Franche-Comté, F25020 Besançon Cedex, France LabEX LipSTIC, ANR-11-LABX-0021, F25020 Besançon Cedex, France CHU Besançon, CIC1431, FHU INCREASE, Besançon, France
| | - Francine Garnache-Ottou
- INSERM UMR1098, F25020 Besançon Cedex, France Université de Bourgogne Franche-Comté, SFR FED4234, F25000 Besançon Cedex, France EFS Bourgogne Franche-Comté, F25020 Besançon Cedex, France LabEX LipSTIC, ANR-11-LABX-0021, F25020 Besançon Cedex, France
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Ziouziou I, Zizi M, Bennani H, Karmouni T, El Khader K, Koutani A, Iben Attya Andaloussi A. [History of pelvic prolapse]. Tunis Med 2013; 91:227-229. [PMID: 23673698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The history of pelvic prolapse back to the era of the pharaohs, about 1500 years before Christ. Hippocrates practiced succussion. Grenades, pieces of soaked linen were used as pessaries.Over the centuries, the eolution in understanding of this female pathology led to different treatment modalities, some of which we can currently seem strange.
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Bièche I, Vacher S, Lallemand F, Tozlu-Kara S, Bennani H, Beuzelin M, Driouch K, Rouleau E, Lerebours F, Ripoche H, Cizeron-Clairac G, Spyratos F, Lidereau R. Expression analysis of mitotic spindle checkpoint genes in breast carcinoma: role of NDC80/HEC1 in early breast tumorigenicity, and a two-gene signature for aneuploidy. Mol Cancer 2011; 10:23. [PMID: 21352579 PMCID: PMC3058099 DOI: 10.1186/1476-4598-10-23] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Accepted: 02/27/2011] [Indexed: 12/01/2022] Open
Abstract
Background Aneuploidy and chromosomal instability (CIN) are common abnormalities in human cancer. Alterations of the mitotic spindle checkpoint are likely to contribute to these phenotypes, but little is known about somatic alterations of mitotic spindle checkpoint genes in breast cancer. Methods To obtain further insight into the molecular mechanisms underlying aneuploidy in breast cancer, we used real-time quantitative RT-PCR to quantify the mRNA expression of 76 selected mitotic spindle checkpoint genes in a large panel of breast tumor samples. Results The expression of 49 (64.5%) of the 76 genes was significantly dysregulated in breast tumors compared to normal breast tissues: 40 genes were upregulated and 9 were downregulated. Most of these changes in gene expression during malignant transformation were observed in epithelial cells. Alterations of nine of these genes, and particularly NDC80, were also detected in benign breast tumors, indicating that they may be involved in pre-neoplastic processes. We also identified a two-gene expression signature (PLK1 + AURKA) which discriminated between DNA aneuploid and DNA diploid breast tumor samples. Interestingly, some DNA tetraploid tumor samples failed to cluster with DNA aneuploid breast tumors. Conclusion This study confirms the importance of previously characterized genes and identifies novel candidate genes that could be activated for aneuploidy to occur. Further functional analyses are required to clearly confirm the role of these new identified genes in the molecular mechanisms involved in breast cancer aneuploidy. The novel genes identified here, and/or the two-gene expression signature, might serve as diagnostic or prognostic markers and form the basis for novel therapeutic strategies.
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Affiliation(s)
- Ivan Bièche
- INSERM U735, Institut Curie Hôpital René Huguenin, St-Cloud, France.
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Drissi A, Bennani H, Giton F, Charrouf Z, Fiet J, Adlouni A. Tocopherols and Saponins Derived fromArgania spinosaExert, an Antiproliferative Effect on Human Prostate Cancer. Cancer Invest 2009; 24:588-92. [PMID: 16982463 DOI: 10.1080/07357900600894815] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The aim of our study is to evaluate the antiproliferative effect of tocopherols obtained from alimentary virgin argan oil extracted from the endemic argan tree of Morocco and of saponins extracted from argan press cake on three human prostatic cell lines (DU145, LNCaP, and PC3). The results were compared to 2-methoxyestradiol as antiproliferative drug candidates. Cytotoxicity and antiproliferative effects were investigated after cells' treatment with tocopherols and saponins compared to 2-Methoxyoestradiol as the positive control. Tocopherols and saponins extracted from argan tree and 2-methoxyestradiol exhibit a dose-response cytotoxic effect and an antiproliferative action on the tested cell lines. The best antiproliferative effect of tocopherols is obtained with DU145 and LNCaP cell lines (28 microg/ml and 32 microg/ml, respectively, as GI50). The saponins fraction displayed the best antiproliferative effect on the PC3 cell line with 18 microg/ml as GI50. Our results confirm the antiproliferative effect of 2-methoxyestradiol and show for the first time the antiproliferative effect of tocopherols and saponins extracted from the argan tree on hormone-dependent and hormone-independent prostate cancer cell lines. These data suggest that argan oil is of potential interest in developing new strategies for prostate cancer prevention.
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Affiliation(s)
- A Drissi
- Faculté des Sciences Ben M'sik, Laboratoire de Recherche sur les Lipoprotéines, Casablanca, Morocco
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Galbois A, Thabut D, Tazi KA, Rudler M, Mohammadi MS, Bonnefont-Rousselot D, Bennani H, Bezeaud A, Tellier Z, Guichard C, Coant N, Ogier-Denis E, Moreau R, Lebrec D. Ex vivo effects of high-density lipoprotein exposure on the lipopolysaccharide-induced inflammatory response in patients with severe cirrhosis. Hepatology 2009; 49:175-84. [PMID: 19053046 DOI: 10.1002/hep.22582] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
UNLABELLED High-density lipoproteins (HDL) are known to neutralize lipopolysaccharide (LPS). Because patients with cirrhosis have lower HDL levels, this may contribute to LPS-induced ex vivo monocyte overproduction of proinflammatory cytokines. However, the effects of HDL on cytokine production by monocytes from patients with cirrhosis have never been studied. The aim of this study was to determine the effects of HDL on LPS-induced proinflammatory cytokine production in whole blood and isolated monocytes from patients with severe cirrhosis and controls. Plasma levels of HDL and cytokines were determined. The effects of reconstituted HDL (rHDL) on LPS-induced cytokine production in whole blood were assessed by cytokine array and on tumor necrosis factor alpha (TNF-alpha) and interleukin-10 (IL-10) production in isolated monocytes. Plasma HDL levels were significantly lower in patients with cirrhosis than in controls. Plasma levels of TNF-alpha and IL-6 were significantly higher in patients with cirrhosis than in controls. Incubation of rHDL with whole blood prevented LPS-induced TNF-alpha and IL-6 overproduction in patients with cirrhosis. LPS-induced TNF-alpha production and CD14 expression were significantly more marked in cirrhotic monocytes than in control monocytes, and both decreased significantly after rHDL incubation. LPS-induced down-regulation of scavenger receptor, class B, type I (SR-BI) expression was abolished in cirrhotic monocytes. CONCLUSIONS This study shows that rHDL abolishes the LPS-induced overproduction of proinflammatory cytokines in whole blood from patients with severe cirrhosis. These results were confirmed in isolated monocytes from these patients. This suggests that administration of rHDL might be a useful strategy for the treatment of cirrhosis to limit LPS-induced cytokine overproduction.
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Affiliation(s)
- Arnaud Galbois
- INSERM, U773, Centre de Recherche Biomédicale Bichat-Beaujon CRB3, Hôpital Beaujon, Clichy, France
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Parmentier B, Hammel P, Bennani H, Valla D, Lévy P, Ruszniewski P. Thrombopénie sévère d’aggravation rapide comme seul signe d’une hémophagocytose chez un malade atteint de cirrhose avec infection léthale du liquide d’ascite par Escherichia coli. ACTA ACUST UNITED AC 2007; 31:967-9. [DOI: 10.1016/s0399-8320(07)78306-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [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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Bennani H, Drissi A, Giton F, Kheuang L, Fiet J, Adlouni A. Antiproliferative effect of polyphenols and sterols of virgin argan oil on human prostate cancer cell lines. ACTA ACUST UNITED AC 2007; 31:64-9. [PMID: 17174037 DOI: 10.1016/j.cdp.2006.09.006] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/16/2006] [Indexed: 12/31/2022]
Abstract
BACKGROUND The aim of our study has to evaluate the antiproliferative effect of polyphenols and sterols extracted from the virgin argan oil on three human prostatic cell lines (DU145, LNCaP, and PC3). METHODS Cytotoxicity, anti-proliferative effects and nuclear morphological changes of cells were analyzed after treatment with sterols and polyphenols. The results were compared to 2-methoxyestradiol (2ME(2)) as positive control. RESULTS Polyphenols and sterols of virgin argan oil and 2ME(2) exhibited a dose-response cytotoxic effect and antiproliferative action on the three tested cell lines. The antiproliferative effect of polyphenols was similar for the DU145 and LNCaP cell lines; the GI(50) (defined as the concentration inhibiting growth by 50% in comparison with the control) was respectively 73 and 70microg/ml. The antiproliferative effect of sterols was 46 and 60microg/ml as GI(50) for the DU145 and LNCaP cell lines. For the PC3 cell line, the best antiproliferative effect was obtained by argan sterols with GI(50)=43microg/ml. On the other hand, the nuclear morphology analyses have shown an increased proportion of pro-apoptotic of nuclei in LNCaP cell treated with IC(50) of polyphenols or sterols compared to control cells. Our results show for the first time the antiproliferative and pro-apoptotic effects of polyphenols and sterols extracted from virgin argan oil and confirm the antiproliferative and pro-apoptotic effects of 2ME(2) on prostate cancer cell lines. CONCLUSION These data suggest that argan oil may be interesting in the development of new strategies for prostate cancer prevention.
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Affiliation(s)
- H Bennani
- Laboratoire de Recherche sur les Lipoprotéines, Faculté des Sciences Ben M'sik, B.P. 7955, Sidi Othman, Casablanca, Morocco
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Moldovan F, Soliman HR, Bennani H, Dumas J, Prévost D, Cussenot O, Mazières C, Le Brun G, Darbord C, Fiet J. [Functional properties of a new line of immortalized human endothelial cells]. C R Acad Sci III 1995; 318:951-958. [PMID: 8521079] [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: 05/22/2023]
Abstract
An immortalized human endothelial cell line was obtained by transfecting umbilical vein endothelial cells in primary culture with plasmid pMK16 containing SV40 replicated origin defective gene. The essential functional properties demonstrated in these immortalized human endothelial cells also retaining the classical phenotypical characteristics of endothelial cells in primary culture are: (1) endothelin-1 secretion; (2) capacity to convert big endothelin-1 into endothelin-1; (3) the capacity to secrete IL1 beta and IL6 interleukins both spontaneously and after lipopolysaccharide (LPS) stimulation; (4) arginine transfer from the extracellular to the intracellular medium. Such stable cell line could facilitate studies of regulation of endothelin-1 production; (5) No-synthase activity; (6) binding and metabolisation of acetylated low-density lipoproteins.
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Affiliation(s)
- F Moldovan
- Laboratoire de biologie hormonale, hôpital Saint-Louis, Paris, France
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Bingen E, Goury V, Bennani H, Lambert-Zechovsky N, Aujard Y, Darbord JC. Bactericidal activity of beta-lactams and amikacin against Haemophilus influenzae: effect on endotoxin release. J Antimicrob Chemother 1992; 30:165-72. [PMID: 1399926 DOI: 10.1093/jac/30.2.165] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Ampicillin or cefotaxime, alone or in combination with amikacin, were tested at levels achievable in CSF for bactericidal activity against eight clinical isolates of Haemophilus influenzae serotype b. Endotoxin release was determined by the limulus amoebocyte lysate test and by macrophage tumour necrosis factor production for each beta-lactam antibiotic, alone and in combination with amikacin. Accelerated killing was observed when amikacin was added to ampicillin or cefotaxime; however, the additional antibiotic-induced bacterial lysis observed after the addition of amikacin to beta-lactam antibiotics was not associated with an increase in endotoxin release.
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Affiliation(s)
- E Bingen
- Laboratoire de Microbiologie, Hôpital Robert Debré, Université Paris VII, France
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Abstract
Presence of gentamicin (GM) in cochlear hair cells was detected by immunohistochemistry in guinea pigs (GPs) cochlea 1, 9 and 41 days after a 6-day treatment with GM at 60 mg/kg/day (s.c.). The number of GPs in each group was respectively 7, 12 and 6. Twelve other non-treated GPs served as controls. Cochlear function was measured, just before sacrifice, by VIIIth nerve compound action potential (CAP) audiograms. Functional and immunohistological evaluations were performed by two independent naïve observers respectively. Functional changes were minimal: only one out of the 25 treated GPs, from the 41-day group, showed significant threshold elevations on high frequencies. Meanwhile GM labelling was observed in most outer hair cells (OHCs) from the three rows of all the treated GPs, with radial and longitudinal gradients, and found similar in the 3 groups. These results 1) confirm that GM is significantly present in OHCs before the development of ototoxicity and 2) indicate that GM accumulates and is maintained inside the OHCs for very long periods of time, i.e. that its clearance from the hair cells, if any, would be very slow.
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Affiliation(s)
- H Hiel
- Laboratoire d'Audiologie Expérimentale, Unité INSERM 229, Bordeaux, France
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