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Abbassi R, Pontes MC, Dhibi S, Duarte Filho LAMS, Othmani S, Bouzenna H, Almeida JRGS, Hfaiedh N. Antioxidant properties of date seeds extract (Phoenix dactylifera L.) in alloxan induced damage in rats. BRAZ J BIOL 2023; 83:e274405. [PMID: 38126632 DOI: 10.1590/1519-6984.274405] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 09/05/2023] [Indexed: 12/23/2023] Open
Abstract
The study was conducted to examine the antioxidant activity and evaluate the protective effects of the date seeds powder kentichi against alloxan-induced damage in the liver, kidney, and pancreas in diabetic's rats. Group 1: control group, that did not receive any treatment, Group 2: alloxan was injected intraperitoneally (120 mg/kg body weight) for two days (Diab), Group 3: treated only by date seeds powder added in the diet (300 g/kg) for 6 weeks (DSPK), Group 4: alloxan-diabetic rats treated with date seeds powder (300 g/kg) (DSPK + Diab). Estimations of biochemical parameters in blood were determined. TBARS, SOD, CAT, and GPx activities were determined. A histopathological study was done by immersing pieces of both organs in a fixative solution followed by paraffin hematoxylin-eosin staining. In addition, the antioxidant activities of DSPK were evaluated by DPPH radical scavenging activity, reducing power, and ABTS free radical scavenging. The results revealed that date seeds significantly decreased serum levels of glucose, cholesterol, triglycerides, urea, creatinine, T-protein, ALP, D-bili and T-bili levels. In addition, superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) activities that had been reduced in liver, kidney, and pancreas of the treated group were restored by DSPK treatments and, therefore, the lipid peroxidation level was reduced in the liver, kidney and pancreas tissue compared to the control group. Additionally, the histological structure in these organs was restored after treatment with date seeds powder.
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Affiliation(s)
- R Abbassi
- University of Gafsa, Faculty of Sciences of Gafsa, Laboratory of Biotechnology and Biomonitoring of the Environment and Oasis Ecosystems - LBBEEO, Gafsa, Tunisia
| | - M C Pontes
- Universidade Federal do Vale do São Francisco, Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Petrolina, PE, Brasil
| | - S Dhibi
- University of Gafsa, Faculty of Sciences of Gafsa, Laboratory of Biotechnology and Biomonitoring of the Environment and Oasis Ecosystems - LBBEEO, Gafsa, Tunisia
| | - L A M S Duarte Filho
- Universidade Federal do Vale do São Francisco, Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Petrolina, PE, Brasil
| | - S Othmani
- University of Gafsa, Faculty of Sciences of Gafsa, Laboratory of Biotechnology and Biomonitoring of the Environment and Oasis Ecosystems - LBBEEO, Gafsa, Tunisia
| | - H Bouzenna
- University of Gafsa, Faculty of Sciences of Gafsa, Laboratory of Biotechnology and Biomonitoring of the Environment and Oasis Ecosystems - LBBEEO, Gafsa, Tunisia
| | - J R G S Almeida
- Universidade Federal do Vale do São Francisco, Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Petrolina, PE, Brasil
| | - N Hfaiedh
- University of Gafsa, Faculty of Sciences of Gafsa, Laboratory of Biotechnology and Biomonitoring of the Environment and Oasis Ecosystems - LBBEEO, Gafsa, Tunisia
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Dibos M, Haschka SJ, Abbassi R, Schneider J, Schmid RM, Rasch S, Lahmer T. Influence of a Structured Microbiological Endotracheal Monitoring Program on the Outcome of Critically Ill COVID-19 Patients: An Observational Study. J Clin Med 2023; 12:5622. [PMID: 37685689 PMCID: PMC10488947 DOI: 10.3390/jcm12175622] [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: 08/07/2023] [Revised: 08/22/2023] [Accepted: 08/26/2023] [Indexed: 09/10/2023] Open
Abstract
BACKGROUND In past influenza pandemics and the current COVID-19 pandemic, bacterial endotracheal superinfections are a well-known risk factor for higher morbidity and mortality. The goal of this study was to investigate the influence of a structured, objective, microbiological monitoring program on the prognosis of COVID-19 patients with mechanical ventilation. METHODS A structured microbiological monitoring program (at intubation, then every 3 days) included collection of endotracheal material. Data analysis focused on the spectrum of bacterial pathogens, mortality, as well as intensive care unit (ICU), hospital, and mechanical ventilation duration. RESULTS A total of 29% of the patients showed bacterial coinfection at the time of intubation, and within 48 h, 56% developed ventilator-associated pneumonia (VAP). Even though patients with VAP had significantly longer ICU, hospital, and mechanical ventilation durations, there was no significant difference in mortality between patients with VAP pneumonia and patients without bacterial infection. CONCLUSION VAP is a common complication in COVID-19 patients. In contrast to already published studies, in our study implementing a structured microbiological monitoring program, COVID-19 patients with bacterial coinfection or VAP did not show higher mortality. Thus, a standardized, objective, microbiological screening can help detect coinfection and ventilator-associated infections, refining anti-infective therapy and positively influencing patient outcomes.
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Affiliation(s)
| | | | | | | | | | | | - Tobias Lahmer
- Department of Internal Medicine II, School of Medicine, University Hospital Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany; (M.D.)
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Schulz D, Rasch S, Heilmaier M, Abbassi R, Poszler A, Ulrich J, Steinhardt M, Kaissis GA, Schmid RM, Braren R, Lahmer T. A deep learning model enables accurate prediction and quantification of pulmonary edema from chest X-rays. Crit Care 2023; 27:201. [PMID: 37237287 DOI: 10.1186/s13054-023-04426-5] [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: 01/24/2023] [Accepted: 04/02/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND A quantitative assessment of pulmonary edema is important because the clinical severity can range from mild impairment to life threatening. A quantitative surrogate measure, although invasive, for pulmonary edema is the extravascular lung water index (EVLWI) extracted from the transpulmonary thermodilution (TPTD). Severity of edema from chest X-rays, to date is based on the subjective classification of radiologists. In this work, we use machine learning to quantitatively predict the severity of pulmonary edema from chest radiography. METHODS We retrospectively included 471 X-rays from 431 patients who underwent chest radiography and TPTD measurement within 24 h at our intensive care unit. The EVLWI extracted from the TPTD was used as a quantitative measure for pulmonary edema. We used a deep learning approach and binned the data into two, three, four and five classes increasing the resolution of the EVLWI prediction from the X-rays. RESULTS The accuracy, area under the receiver operating characteristic curve (AUROC) and Mathews correlation coefficient (MCC) in the binary classification models (EVLWI < 15, ≥ 15) were 0.93 (accuracy), 0.98 (AUROC) and 0.86(MCC). In the three multiclass models, the accuracy ranged between 0.90 and 0.95, the AUROC between 0.97 and 0.99 and the MCC between 0.86 and 0.92. CONCLUSION Deep learning can quantify pulmonary edema as measured by EVLWI with high accuracy.
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Affiliation(s)
- Dominik Schulz
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar, Munich, Germany.
- III. Medizinische Klinik, Universitätsklinikum Augsburg, Augsburg, Germany.
| | - Sebastian Rasch
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar, Munich, Germany
| | - Markus Heilmaier
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar, Munich, Germany
| | - Rami Abbassi
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar, Munich, Germany
| | - Alexander Poszler
- Innere Medizin - Gastroenterologie, Krankenhaus Agatharied, Hausham, Germany
| | - Jörg Ulrich
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar, Munich, Germany
| | - Manuel Steinhardt
- Institute for Diagnostic and Interventional Radiology, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Georgios A Kaissis
- Institute for Diagnostic and Interventional Radiology, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Roland M Schmid
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar, Munich, Germany
| | - Rickmer Braren
- Institute for Diagnostic and Interventional Radiology, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Tobias Lahmer
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar, Munich, Germany
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Abstract
BACKGROUND Pancreatic adenocarcinoma is an extremely aggressive tumor which is supposed to become the second deadliest malignancy in 2030. For a long time the possibilities to treat this complex disease were very limited. SUMMARY In the last years the development of new chemotherapeutic regimens has led to a better outcome in the ad-juvant, neoadjuvant, and palliative setting. Furthermore, progress in sequencing technologies has enabled a detailed investigation of the genetic alterations, mutational burden, expression pattern, and stroma composition in pancreatic cancer and led to the identification of subtypes of this disease. MESSAGES This analysis will increase our understanding of tumor heterogeneity and hopefully translate into new potential targets, biomarkers, and the development of individual therapeutic approaches in the future.
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Affiliation(s)
| | - Roland M. Schmid
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
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Abstract
Pancreatic cancer belongs to the most deadly malignancies and is expected to become the second deadliest cancer by 2040. Still, in most of the cases the tumor is detected in a nonresectable or metastatic state and, untreated, the disease will progress rapidly. Even with chemotherapeutic treatment the prognosis is poor and the 5-year overall survival rate is less than 10%. Therefore, there is a need for proper therapeutic options for the palliative treatment of the disease. Despite great efforts to find new drugs for the treatment of pancreatic cancer, for a long time the therapy was limited to the use of gemcitabine with very limited benefit. Recently new chemotherapeutic regimens have been identified that helped to improve the overall survival significantly. In addition, even second-line therapies have been established. This review will provide an overview on the current standard of care, discusses possible treatment sequences and offer a perspective on future developments.
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Affiliation(s)
- Rami Abbassi
- II. Medizinische Klinik and Comprehensive Cancer Center Munich, Technische Universität München, Munich, Germany
| | - Hana Algül
- II. Medizinische Klinik and Comprehensive Cancer Center Munich, Technische Universität München, Munich, Germany
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Krug S, Abbassi R, Griesmann H, Sipos B, Wiese D, Rexin P, Blank A, Perren A, Haybaeck J, Hüttelmaier S, Rinke A, Gress TM, Michl P. Therapeutic targeting of tumor-associated macrophages in pancreatic neuroendocrine tumors. Int J Cancer 2019; 143:1806-1816. [PMID: 29696624 DOI: 10.1002/ijc.31562] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [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: 01/15/2018] [Revised: 03/18/2018] [Accepted: 03/28/2018] [Indexed: 12/13/2022]
Abstract
Pancreatic neuroendocrine tumors (PNETs) represent a heterogeneous group of neuroendocrine neoplasms with varying biological behavior and response to treatment. Although targeted therapies have been shown to improve the survival for patients at advanced stage, resistance to current therapies frequently occurs during the course of therapy. Previous reports indicate that the infiltration of tumor-associated macrophages (TAMs) in PNETs might correlate with tumor progression and metastasis formation. We aimed to evaluate the prognostic and functional impact of TAMs in human PNETs in vitro and in vivo and to investigate the effect of therapeutic targeting TAMs in a genetic PNET mouse model. TAM expression pattern was assessed immunohistochemically in human PNET tissue sections and a tissue-micro-array of PNET tumors with different functionality, stage, and grading. The effect of liposomal clodronate on TAM cell viability was analyzed in myeloid cell lines and isolated murine bone macrophages (mBMM). In vivo, RIP1Tag2 mice developing insulinomas were treated with liposomal clodronate or PBS-Liposomes. Tumor progression, angiogenesis and immune cell infiltration were assessed by immunohistochemistry. In human, insulinomas TAM density was correlated with invasiveness and malignant behavior. Moreover, TAM infiltration in liver metastases was significantly increased compared to primary tumors. In vitro, Liposomal clodronate selectively inhibited the viability of myeloid cells and murine bone macrophages, leaving PNET tumor cell lines largely unaffected. In vivo, repeated application of liposomal clodronate to RIP1Tag2 mice significantly diminished the malignant transformation of insulinomas, which was accompanied by a reduced infiltration of F4/80-positive TAM cells and simultaneously by a decreased microvessel density, suggesting a pronounced effect of clodronate-induced myeloid depletion on tumor angiogenesis. Concomitant treatment with the antiangiogenic TKI sunitinib, however, did not show any synergistic effects with liposomal clodronate. TAMs are crucial for malignant transformation in human PNET and correlate with metastatic behavior. Pharmacological targeting of TAMs via liposomal clodronate disrupts tumor progression in the RIP1Tag2 neuroendocrine tumor model and was associated with reduced tumor angiogenesis. Based on these results, using liposomal clodronate to target proangiogenic myeloid cells could be employed as novel therapeutic avenue in highly angiogenic tumors such as PNET.
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Affiliation(s)
- Sebastian Krug
- Department of Internal Medicine I, Martin Luther University Halle-Wittenberg, Halle, Saale, Germany
| | - Rami Abbassi
- Department of Gastroenterology and Endocrinology, Philipps-University, Marburg, Germany
| | - Heidi Griesmann
- Department of Internal Medicine I, Martin Luther University Halle-Wittenberg, Halle, Saale, Germany
| | - Bence Sipos
- Institute of Pathology and Neuropathology, University Hospital of Tübingen, Tübingen, Germany
| | - Dominik Wiese
- Department of Visceral, Thoracic and Vascular Surgery, Philipps-University, Marburg, Germany
| | - Peter Rexin
- Institute of Pathology, Philipps-University, Marburg, Germany
| | - Annika Blank
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Aurel Perren
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Johannes Haybaeck
- Department of Pathology, Otto-von-Guericke-University, Magdeburg, Germany
| | - Stefan Hüttelmaier
- Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Saale, Germany
| | - Anja Rinke
- Department of Gastroenterology and Endocrinology, Philipps-University, Marburg, Germany
| | - Thomas M Gress
- Department of Gastroenterology and Endocrinology, Philipps-University, Marburg, Germany
| | - Patrick Michl
- Department of Internal Medicine I, Martin Luther University Halle-Wittenberg, Halle, Saale, Germany
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Abbassi R, Kacemi L, Jroundi L, Chami I, Boujida N. [Brain metastases as the presenting feature of soft tissue sarcoma: report of two cases]. J Radiol 2008; 89:514-516. [PMID: 18477960 DOI: 10.1016/s0221-0363(08)71457-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- R Abbassi
- Service de Radiologie, Institut National d'Oncologie, Rabat, Morocco.
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Hersh PS, Abbassi R. Surgically induced astigmatism after photorefractive keratectomy and laser in situ keratomileusis. Summit PRK-LASIK Study Group. J Cataract Refract Surg 1999; 25:389-98. [PMID: 10079445 DOI: 10.1016/s0886-3350(99)80088-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE To compare the axis and magnitude of surgically induced astigmatism in photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK). SETTING Multicenter clinical trial. METHODS In this prospective randomized trial, 220 eyes of 220 patients entered the study cohort: 105 randomized to PRK and 115 to LASIK. All patients received a single-pass, multizone excimer laser ablation as part of a PRK or LASIK procedure. Attempted corrections ranged from -6.00 to -15.00 diopters (D). The LASIK procedures were performed with nasal hinges. Absolute changes in astigmatism and axis and magnitude of surgically induced astigmatism were analyzed. Patients were followed for up to 6 month. RESULTS In the PRK group, the mean change in absolute astigmatism was +0.14, +0.16 and +0.32 D at 1, 3, and 6 months, respectively; in the LASIK group, the mean change was -0.15, -0.08, and -0.03 D, respectively. At all time points, a greater proportion of PRK than LASIK eyes had an increase in absolute magnitude of astigmatism. In the PRK group, the axis of vectoral-induced astigmatism was significantly different from random at 3 and 6 months (P = .01, P < .001), respectively) with a tendency for induced with-the-rule shifts postoperatively. In the LASIK group, the axis of vectoral-induced astigmatism was significantly different from random at only 1 month (P = .04), and there was no preponderant direction of axis shift. Despite these findings, other analyses showed no statistically significant between-group differences in vectoral axis or magnitude of surgically induced astigmatism. CONCLUSIONS Induced astigmatism was generally less and more random in axis in LASIK than in PRK; a general trend for induced with-the-rule astigmatism in PRK was not seen in LASIK. Hypothetically, the lamellar corneal flap in LASIK may counteract the tendency toward steepening at 90 degrees seen in PRK by retracting toward the hinge, by masking underlying induced astigmatism in the ablation zone, or by its mitigating influence on postoperative corneal healing.
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