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Abouriche A, Bendahou H, Maaroufi A, Zahri S, Zaid A, Benmalek R, Azzouzi L, Habbal R. Upper-limb deep vein thrombosis as a warning sign of breast cancer in diabetic patients: Experience of a Moroccan cardio-oncology unit and bibliographic review. Archives of Cardiovascular Diseases Supplements 2023. [DOI: 10.1016/j.acvdsp.2022.10.319] [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: 12/31/2022]
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El Finou H, Salhi N, Zaid A, El Rhaffari L. Consumption of food supplements in the Fes-Meknes region (Morocco); profiles and typology. Rocz Panstw Zakl Hig 2023; 74:159-165. [PMID: 37309867 DOI: 10.32394/rpzh.2023.0255] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023] Open
Abstract
Background The consumption of food supplements is increasing. This evolution is due to several factors, including nutritional deficiencies in the population, a sedentary lifestyle, and a decrease in physical activity. In addition, stress and an active lifestyle led to several dysfunctions (fatigue, deconcentration) that food supplements can help to overcome. Objective This study aimed to determine the profiles of food supplement consumers in the Fes-Meknes region (Morocco), distribution, and production of these products. In addition, this survey aimed to evaluate consumers' knowledge of food supplements as part of their self-medication. Material and methods The present study was conducted in the form of a survey using a questionnaire composed of two parts. The first part provides information on the socio-demographic status of respondents, including gender, age, and level of education. The second part concerned various information on the consumption of food supplements. Results The results obtained showed that of the 498 subjects, 68.88% declared that they had already consumed the food supplements. The study revealed the predominance of the female gender at 69.68% and the age group 21-30 years (80.32%). Among the reasons for consumption, improving general health comes first with 56.29%. Our results also showed high consumption of vitamins (44.04%) and minerals (24.79%), next come proteins and plant extracts at 16.62% and 14.54% respectively. The consumption of food supplements is most often done on the advice of a doctor or dietician with 43.60%, and the pharmacy and para-pharmacy remains the main distribution channel at 75.78%. Conclusion The present survey allowed us to update the current situation of food supplement consumption and a way of regulatory monitoring and more control for an organization of the sector.
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Affiliation(s)
- Hamza El Finou
- Department of Biology, Laboratory of Bioactives, Health and Environment, Moulay Ismail University of Meknes, Faculty of Sciences, Morocco
| | - Nadia Salhi
- Department of Biology, Laboratory of Bioactives, Health and Environment, Moulay Ismail University of Meknes, Faculty of Sciences, Morocco
| | - Abdelhamid Zaid
- Department of Biology, Laboratory of Bioactives, Health and Environment, Moulay Ismail University of Meknes, Faculty of Sciences, Morocco
| | - Lhoussaine El Rhaffari
- Department of Biology, Laboratory of Bioactives, Health and Environment, Moulay Ismail University of Meknes, Faculty of Sciences, Morocco
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Khfif K, Baala M, Bouharroud R, Trivellone V, Walters SA, Zaid A, Brostaux Y, El Rhaffari L. Population ecology of leafhopper Jacobiasca lybica (Bergevin & Zanon, 1922) (Hemiptera: Cicadellidae) and its control based on degree-days in Moulouya area of Morocco. All Life 2022. [DOI: 10.1080/26895293.2022.2056526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Khalid Khfif
- Research Unit on Nuclear Techniques, Environment, and Quality, National Institute for Agricultural Research (INRA), Tangier, Morocco
- Laboratory of Bio-Actives Health and Environment, Faculty of Sciences, Moulay Ismail University of Meknes, Meknes, Morocco
- TERRA, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Mohammed Baala
- Biology Department, Faculty of Sciences, Mohammed Premier University, Oujda, Morocco
| | - Rachid Bouharroud
- Integrated Crop Production Unit, National Institute for Agricultural Research, Inezgane, Morocco
| | - Valeria Trivellone
- Prairie Research Institute, Illinois Natural History Survey, University of Illinois, Champaign, IL, USA
| | - Stuart Alan Walters
- Department of Plant, Soil and Agricultural Systems, College of Agricultural Sciences, Southern Illinois University, Carbondale, IL, USA
| | - Abdelhamid Zaid
- Laboratory of Bio-Actives Health and Environment, Faculty of Sciences, Moulay Ismail University of Meknes, Meknes, Morocco
| | - Yves Brostaux
- TERRA, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Lhoussaine El Rhaffari
- Laboratory of Bio-Actives Health and Environment, Faculty of Sciences, Moulay Ismail University of Meknes, Meknes, Morocco
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Hbika A, Daoudi NE, Bouyanzer A, Bouhrim M, Mohti H, Loukili EH, Mechchate H, Al-Salahi R, Nasr FA, Bnouham M, Zaid A. Artemisia absinthium L. Aqueous and Ethyl Acetate Extracts: Antioxidant Effect and Potential Activity In Vitro and In Vivo against Pancreatic α-Amylase and Intestinal α-Glucosidase. Pharmaceutics 2022; 14:pharmaceutics14030481. [PMID: 35335858 PMCID: PMC8953551 DOI: 10.3390/pharmaceutics14030481] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 02/08/2022] [Accepted: 02/18/2022] [Indexed: 11/16/2022] Open
Abstract
Artemisia absinthium L. is one of the plants which has been used in folk medicine for many diseases over many centuries. This study aims to analyze the chemical composition of the Artemisia absinthium ethyl acetate and its aqueous extracts and to evaluate their effect on the pancreatic α-amylase enzyme and the intestinal α-glucosidase enzyme. In this study, the total contents of phenolic compounds, flavonoids, and condensed tannins in ethyl acetate and the aqueous extracts of Artemisia absinthium leaves were determined by using spectrophotometric techniques, then the antioxidant capacity of these extracts was examined using three methods, namely, the DPPH (2, 2-diphenyl-1picrylhydrazyl) free radical scavenging method, the iron reduction method FRAP, and the β-carotene bleaching method. The determination of the chemical composition of the extracts was carried out using high-performance liquid chromatography-the photodiode array detector (HPLC-DAD). These extracts were also evaluated for their ability to inhibit the activity of the pancreatic α-amylase enzyme, as well as the intestinal α-glucosidase enzyme, in vitro and in vivo, thus causing the reduction of blood glucose. The results of this study showed that high polyphenol and flavonoid contents were obtained in ethyl acetate extract with values of 60.34 ± 0.43 mg GAE/g and 25.842 ± 0.241 mg QE/g, respectively, compared to the aqueous extract. The results indicated that the aqueous extract had a higher condensed tannin content (3.070 ± 0.022 mg EC/g) than the ethyl acetate extract (0.987 ± 0.078 mg EC/g). Ethyl acetate extract showed good DPPH radical scavenging and iron reduction FRAP activity, with an IC50 of 0.167 ± 0.004 mg/mL and 0.923 ± 0.0283 mg/mL, respectively. The β-carotene test indicated that the aqueous and ethyl acetate extracts were able to delay the decoloration of β-carotene with an inhibition of 48.7% and 48.3%, respectively, which may mean that the extracts have antioxidant activity. HPLC analysis revealed the presence of naringenin and caffeic acid as major products in AQE and EAE, respectively. Indeed, this study showed that the aqueous and ethyl acetate extracts significantly inhibited the pancreatic α-amylase and intestinal α-glucosidase, in vitro. To confirm this result, the inhibitory effect of these plant extracts on the enzymes has been evaluated in vivo. Oral intake of the aqueous extract significantly attenuated starch- and sucrose-induced hyperglycemia in normal rats, and evidently, in STZ-diabetic rats as well. The ethyl acetate extract had no inhibitory activity against the intestinal α-glucosidase enzyme in vivo. The antioxidant and the enzyme inhibitory effects may be related to the presence of naringenin and caffeic acid or their synergistic effect with the other compounds in the extracts.
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Affiliation(s)
- Asmae Hbika
- Laboratory of Applied Chemistry and Environment, Team Applied Analytical Chemistry of Materials and Environment Faculty of Sciences, Mohammed First University, Oujda 60000, Morocco; (A.H.); (A.B.); (E.H.L.)
| | - Nour Elhouda Daoudi
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Department of Biology, Faculty of Sciences, University Mohamed First, Boulevard Mohamed VI, Oujda 60000, Morocco; (N.E.D.); (M.B.); (M.B.)
| | - Abdelhamid Bouyanzer
- Laboratory of Applied Chemistry and Environment, Team Applied Analytical Chemistry of Materials and Environment Faculty of Sciences, Mohammed First University, Oujda 60000, Morocco; (A.H.); (A.B.); (E.H.L.)
| | - Mohamed Bouhrim
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Department of Biology, Faculty of Sciences, University Mohamed First, Boulevard Mohamed VI, Oujda 60000, Morocco; (N.E.D.); (M.B.); (M.B.)
| | - Hicham Mohti
- Laboratory of Management and Valorization of Natural Resources, Department of Biology, Faculty of Sciences, Moulay Ismail University, BP 11201 Zitoune, Meknes 50070, Morocco; (H.M.); (A.Z.)
| | - El Hassania Loukili
- Laboratory of Applied Chemistry and Environment, Team Applied Analytical Chemistry of Materials and Environment Faculty of Sciences, Mohammed First University, Oujda 60000, Morocco; (A.H.); (A.B.); (E.H.L.)
| | - Hamza Mechchate
- Laboratory of Inorganic Chemistry, Department of Chemistry, University of Helsinki, FI-00014 Helsinki, Finland
- Correspondence:
| | - Rashad Al-Salahi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Fahd A. Nasr
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Mohamed Bnouham
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Department of Biology, Faculty of Sciences, University Mohamed First, Boulevard Mohamed VI, Oujda 60000, Morocco; (N.E.D.); (M.B.); (M.B.)
| | - Abdelhamid Zaid
- Laboratory of Management and Valorization of Natural Resources, Department of Biology, Faculty of Sciences, Moulay Ismail University, BP 11201 Zitoune, Meknes 50070, Morocco; (H.M.); (A.Z.)
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El Fakir L, Bourhia M, Salamatullah AM, Alzahrani A, Ullah R, Ezzeldin E, Mostafa GA, Bari A, Alaoui T, Gmouh S, Benbacer L, Zaid A. Acute and repeated dose 60-day oral toxicity assessment of chemically characterized Berberis hispanica Boiss. and Reut in Wistar rats. OPEN CHEM 2021. [DOI: 10.1515/chem-2021-0057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Abstract
Berberis hispanica Boiss. & Reut (B. hispanica) belongs to the family Berberidaceae, which is currently used in traditional medicines. This article aimed to study the phytochemical composition and acute and subacute toxicity of B. hispanica extract in rats. The phytochemical composition of B. hispanica extract was characterized using GC-MS. The acute toxicity was investigated in vivo via the oral administration of single doses including 400, 800, 1,000, 1,200, and 1,400 mg/kg for 14 days. The subchronic toxicity was studied through oral administration of 400 mg/kg for 60 days. The findings of the phytochemical analysis of B. hispanica extract showed the presence of various phytochemical compounds. Acute toxicity results revealed serious clinical symptoms and mortalities in rats treated with 800 mg/kg up to a maximum of 1,400 mg/kg. With acute toxicity, subchronic toxicity results showed also serious signs of toxicity including biochemical and histological alterations in animals treated with 1,400 mg/kg. B. hispanica extract revealed to be toxic in rats orally treated under both subacute (>400 mg/kg) and subchronic toxicity conditions (400 mg/kg). The outcome of this study serves the society as it provides toxicological evidence of B. hispanica used in alternative medicines
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Affiliation(s)
- Loubna El Fakir
- Laboratory of Management and Development of Natural Resources, Faculty of Sciences, University Moulay Ismail , Meknes, B. P. 11201 , Meknes , Morocco
| | - Mohammed Bourhia
- Laboratory of Chemistry-Biochemistry, Environment, Nutrition, and Health, Faculty of Medicine and Pharmacy, University Hassan II , B. P. 5696 , Casablanca , Morocco
| | - Ahmad Mohammad Salamatullah
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University , P. O. Box 2460 , Riyadh 11451 , Saudi Arabia
| | - Abdulhakeem Alzahrani
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University , P. O. Box 2460 , Riyadh 11451 , Saudi Arabia
| | - Riaz Ullah
- Department of Pharmacognosy, College of Pharmacy, King Saud University , Riyadh 11451 , Saudi Arabia
| | - Essam Ezzeldin
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University , Riyadh 11451 , Saudi Arabia
| | - Gamal A. Mostafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University , Riyadh 11451 , Saudi Arabia
| | - Ahmed Bari
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University , Riyadh 11451 , Saudi Arabia
| | - Tajelmolk Alaoui
- Laboratory of Management and Development of Natural Resources, Faculty of Sciences, University Moulay Ismail , Meknes, B. P. 11201 , Meknes , Morocco
| | - Said Gmouh
- Laboratory of Engineering and Materials LIMAT, Faculty of Sciences Ben M’Sik, University Hassan II , Casablanca , B. P. 7955 , Morocco
| | - Laila Benbacer
- Laboratory of Pharmacology and Toxicology, Life Science Division, National Centre for Energy, Sciences, and Nuclear Techniques , B. P. 1382 RP , 10001 Rabat , Morocco
| | - Abdelhamid Zaid
- Laboratory of Management and Development of Natural Resources, Faculty of Sciences, University Moulay Ismail , Meknes, B. P. 11201 , Meknes , Morocco
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Mohti H, Taviano MF, Cacciola F, Dugo P, Mondello L, Marino A, Crisafi G, Benameur Q, Zaid A, Miceli N. Inula viscosa (L.) Aiton leaves and flower buds: Effect of extraction solvent/technique on their antioxidant ability, antimicrobial properties and phenolic profile. Nat Prod Res 2019; 34:46-52. [PMID: 30822145 DOI: 10.1080/14786419.2019.1569659] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 01/08/2023]
Abstract
This study was designed to establish the most effective solvent/technique for extracting antioxidant phytoconstituents from leaves and flower buds of Inula viscosa (L.) Aiton (Asteraceae) grown wild in Morocco. Maceration and hot extraction with methanol or water and Soxhlet ethanol extraction were utilized. The antioxidant potential was evaluated in vitro by DPPH, reducing power, and ferrous ions chelating activity assays. I. viscosa leaf and flower bud extracts displayed the strongest effect in the DPPH test, being the Soxhlet ethanol the most active ones (IC50 = 54.24 ± 0.21 μg/mL and 39.77 ± 0.23 μg/mL); thus, they were selected for further investigations. The antimicrobial efficacy of the Soxhlet ethanol extracts against ATCC and food isolates strains was assayed; the leaf extract showed the best activity, and Candida albicans was the most sensitive strain (MIC = 125 µg/mL). The extracts resulted non-toxic against Artemia salina. Among the phenolics characterised by HPLC-PDA-ESI-MS, hispidulin hexoside, patuletin and spinacetin were identified for the first time.
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Affiliation(s)
- H Mohti
- Department of Biology Faculty of Sciences, Moulay Ismail University, Meknes, Morocco.,CUI-UMI-UHasselt Program (Morocco-Belgium)
| | - M F Taviano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Polo Annunziata, University of Messina, Messina, Italy
| | - F Cacciola
- Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali, University of Messina, Messina, Italy
| | - P Dugo
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Polo Annunziata, University of Messina, Messina, Italy.,Facoltà Dipartimentale di Medicina e Chirurgia, University Campus Bio-Medico of Rome, Rome, Italy.,Chromaleont s.r.l., c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, Messina, Italy
| | - L Mondello
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Polo Annunziata, University of Messina, Messina, Italy.,Facoltà Dipartimentale di Medicina e Chirurgia, University Campus Bio-Medico of Rome, Rome, Italy.,Chromaleont s.r.l., c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, Messina, Italy
| | - A Marino
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Polo Annunziata, University of Messina, Messina, Italy
| | - G Crisafi
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Polo Annunziata, University of Messina, Messina, Italy
| | - Q Benameur
- Nursing Department Faculty of Natural Sciences and Life, Abdelhamid Ibn Badis University, Mostaganem, Algeria
| | - A Zaid
- Department of Biology Faculty of Sciences, Moulay Ismail University, Meknes, Morocco.,CUI-UMI-UHasselt Program (Morocco-Belgium)
| | - N Miceli
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Polo Annunziata, University of Messina, Messina, Italy
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Amira G, Sherif A, Sallam I, Sherif M, Diab K, Youssif M, Elgohary A, Noaman A, Zaid A, Moataz M, Hefny M. 246. What type of oncoplastic surgical techniques do Egyptian patients prefer for breast cancer, contralateral symmetry or ipsilateral contour? Eur J Surg Oncol 2016. [DOI: 10.1016/j.ejso.2016.06.178] [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] Open
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Zaid A, Ghanem M, Maqboul L, Zaid H, Mahasne A. Biowaiver Eligibility of a Lower Strength Ramipril/Hydrochlorothiazide Immediate Release Tablets Using a New Validated HPLC Analytical Method. Drug Res (Stuttg) 2016; 66:539-546. [DOI: 10.1055/s-0042-111434] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- A. Zaid
- Department of Pharmacy, Faculty of Medicine & Health Sciences, An-Najah National University, Nablus, Palestine
| | - M. Ghanem
- Pharmacare Ltd, Ramallah – Palestine
| | - L. Maqboul
- Department of Pharmacy, Faculty of Medicine & Health Sciences, An-Najah National University, Nablus, Palestine
| | - H. Zaid
- Department of Pharmacy, Faculty of Medicine & Health Sciences, An-Najah National University, Nablus, Palestine
| | - A. Mahasne
- Department of Pharmacy, Faculty of Medicine & Health Sciences, An-Najah National University, Nablus, Palestine
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El-Bahrawy A, Zaid A, Sunden Y, Sakurai M, Ito H, Ito T, Morita T. Pathogenesis of Renal Lesions in Chickens After Experimental Infection With 9a5b Newcastle Disease Virus Mutant Isolate. Vet Pathol 2016; 54:94-98. [PMID: 27371537 DOI: 10.1177/0300985816655852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this study, we investigated the pathogenesis of Newcastle disease virus (NDV) in the chicken kidney. Twenty-six 32-day-old specific pathogen-free chickens were intranasally inoculated with the 9a5b NDV mutant isolate. Kidney tissue samples, collected at 6 and 12 hours postinoculation (hpi) and 1, 2, 3, 5, and 10 days postinoculation (dpi), were analyzed by histopathology, immunohistochemistry (IHC), reverse transcription polymerase chain reaction (RT-PCR), and virus titration. Histopathologically, tubulointerstitial nephritis was detected in the renal cortex and predominantly in the medulla. Nephrotropism of 9a5b NDV was confirmed by IHC, RT-PCR, and virus isolation. Massive degenerative changes and infiltration of CD3-immunopositive cells accompanied replication of the 9a5b NDV isolate in chicken kidneys. In conclusion, pathological changes that were caused by NDV in chicken kidneys were similar to those caused by avian influenza virus, infectious bronchitis virus, and avian nephritis virus, and this highlights the importance of including NDV in the differential diagnosis of kidney disease in chickens.
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Affiliation(s)
- A El-Bahrawy
- 1 Department of Veterinary Pathology, Faculty of Agriculture, Tottori University, Minami, Koyama-cho, Tottori, Japan.,2 The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan.,3 Department of Veterinary Pathology, Faculty of Veterinary Medicine, University of Sadat City, Menoufiya, Egypt
| | - A Zaid
- 1 Department of Veterinary Pathology, Faculty of Agriculture, Tottori University, Minami, Koyama-cho, Tottori, Japan.,3 Department of Veterinary Pathology, Faculty of Veterinary Medicine, University of Sadat City, Menoufiya, Egypt
| | - Y Sunden
- 1 Department of Veterinary Pathology, Faculty of Agriculture, Tottori University, Minami, Koyama-cho, Tottori, Japan
| | - M Sakurai
- 4 Department of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - H Ito
- 5 Department of Veterinary Public Health, Faculty of Agriculture, Tottori University, Minami, Koyama-cho, Tottori, Japan
| | - T Ito
- 5 Department of Veterinary Public Health, Faculty of Agriculture, Tottori University, Minami, Koyama-cho, Tottori, Japan
| | - T Morita
- 1 Department of Veterinary Pathology, Faculty of Agriculture, Tottori University, Minami, Koyama-cho, Tottori, Japan
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Mackay LK, Minnich M, Kragten NAM, Liao Y, Nota B, Seillet C, Zaid A, Man K, Preston S, Freestone D, Braun A, Wynne-Jones E, Behr FM, Stark R, Pellicci DG, Godfrey DI, Belz GT, Pellegrini M, Gebhardt T, Busslinger M, Shi W, Carbone FR, van Lier RAW, Kallies A, van Gisbergen KPJM. Hobit and Blimp1 instruct a universal transcriptional program of tissue residency in lymphocytes. Science 2016; 352:459-63. [DOI: 10.1126/science.aad2035] [Citation(s) in RCA: 553] [Impact Index Per Article: 69.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 03/21/2016] [Indexed: 12/12/2022]
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Alhamlan FS, Al-Ahdal MN, Khalaf NZ, Abdo AA, Sanai FM, Al-Ashgar HI, Elhefnawi M, Zaid A, Al-Qahtani AA. Hepatitis C virus genotype 1: how genetic variability of the core protein affects the response to pegylated-interferon and ribavirin therapy. J Med Virol 2013; 86:224-34. [PMID: 24166351 DOI: 10.1002/jmv.23823] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2013] [Indexed: 12/29/2022]
Abstract
Hepatitis C virus subgenotypes 1a and 1b are found worldwide and cause 60% of all hepatitis C cases. It has been reported recently that viral genetic variations have a critical impact on the patient treatment outcome. In particular, polymorphisms of the HCV core protein have been linked to poor treatment response. However, most of these studies were conducted on Asian populations, Japanese in particular who are infected with HCV subgenotype 1b. Hence, we aimed in this study to examine the core protein polymorphisms in Saudi patients who are infected with chronic HCV genotype 1 (1a and 1b subtypes) and its association with treatment outcome. Direct sequencing of full-length core protein and data mining analyses were utilized. Results have shown that the response to treatment is dependent on subgenotypes. Indeed, HCV-1b showed different point mutations that are associated with treatment outcome where the point mutations at positions 70 (Arg(70) Gln) and 75 (Thr(75) Ala) in HCV-1b are significantly associated with PEG-IFN/RBV treatment response. In contrast, HCV-1a showed no significant association between core protein mutations and response to treatment. In addition, analyses of HCV-1a core protein sequences revealed a highly conserved region especially in the responder group. This study provides a new insight in the genetic variability of full-length core protein in HCV genotype 1 in Saudi infected patients.
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Affiliation(s)
- F S Alhamlan
- Department of Infection and Immunity, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
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Zaid A, Rinno T, Jaradat N, Jodeh S, Khammash S. Interchangeability between paracetamol tablets marketed in Palestine. Is there a quality reason for a higher price? East Mediterr Health J 2013; 19:542-546. [PMID: 24975183] [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] [Received: 08/09/2011] [Accepted: 12/12/2011] [Indexed: 06/03/2023]
Abstract
The objective of this study was to evaluate the quality of 10 commercial paracetamol products available on the Palestinian market. We carried out a survey on the price of all paracetamol tablet products and assessed their quality. To assess quality, all products were examined visually for their organoleptic properties, tested for weight uniformity, friability, disintegration, and dissolution profile, and assayed for paracetamol content. All imported products were 2 to 3 times more expensive than the locally produced generic products. Based on our testing procedure, all paracetamol products were equivalent to the innovator product except for 1 imported product which fell below the approved specifications developed for the innovator product. Although the majority of generic products met the dissolution specification requirement that 80% of the drug must dissolve in 30 minutes, 1 generic product failed. These results demonstrate that generic paracetamol tablets produced by local manufacturers are often comparable in vitro to the innovator product and have lower costs.
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Zaid A, Rinno T, Jaradat N, Jodeh S, Khammash. Interchangeability between paracetamol tablets marketed in Palestine. Is there a quality reason for a higher price? East Mediterr Health J 2013. [DOI: 10.26719/2013.19.6.542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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McCubbin M, Zaid A. WOULD A COMBINATION OF ORGANOGENESIS AND EMBRYOGENESIS TECHNIQUES IN DATE PALM MICROPROPAGATION BE THE ANSWER? ACTA ACUST UNITED AC 2007. [DOI: 10.17660/actahortic.2007.736.23] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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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Aboudkhil S, Henry L, Zaid A, Bureau JP. Effect of testosterone on growth of P388 leukemia cell line in vivo and in vitro. Distribution of peripheral blood T lymphocytes and cell cycle progression. Neoplasma 2005; 52:260-6. [PMID: 15875090] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
In transplanted mice, the P388 tumor grew better in castrated than in non castrated (NC) mice. The proportion of CD8+ in the blood was more numerous in NC mice. The T cell subsets (CD4+ and CD8+) were also high in the mice with small tumor tissue (<10 mg). The correlation observed between the tumor weight and T cell subset in PBL and in the mice with small tumors could confirm the important intervention of CD4+ and CD8+ cells to inhibit growth of tumor. Depo-testosterone (DT) injection reduced strongly weight and tumor growth in mice. On top of that, DT administration induced a significant increase in the percentage of blood CD8+ cells in grafted mice. The effect of DT was studied on the cell cycle progression, in tumor tissue of P388 tumor bearing BDF1 mice and in P388 murine leukemia cell line in culture. The cell cycle analysis in tumor tissue showed that DT decreased both the cells in S phase and the proliferating leukemic cells, with accumulation of cells in G0/G1 phase. The testosterone can inhibit the proliferation of leukemic cells with a pharmacological dose (10(-7) M). This growth inhibition, dose and time dependent, was associated with cell cycle arrest; P388 cells accumulates in G0/G1 phase. We also observed a correlation between tumor weight and the percentage of cells in G0/G1 and the relative number of cells in proliferative state (S + G2/M). To conclude, our experiments reported that testosterone prevents the growth of tumor: indirectly by modulation of subsets T cells distribution and directly by the alteration of the cell cycle.
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Affiliation(s)
- S Aboudkhil
- Departement of Biology, UFR Environment and Health, Faculty of Science and Technique University Hassan II, Mohammedia, Maroc.
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Aboudkhil S, Henry L, Zaid A, Bureau JP. Effect of testosterone on growth of P388 leukemia cell line in vivo and in vitro. Distribution of peripheral blood T lymphocytes and cell cycle progression. Neoplasma 2004; 51:368-74. [PMID: 15640941] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
In transplanted mice, the P388 tumor grew better in castrated than in non castrated (NC) mice. The proportion of CD8+ in the blood was more numerous in NC mice. The T cell subsets (CD4+ and CD8+) were also high in the mice with small tumor tissue (<10 mg). The correlation observed between the tumor weight and T cell subset in PBL and in the mice with small tumors could confirm the important intervention of CD4+ and CD8+ cells to inhibit growth of tumor. Depo-testosterone (DT) injection reduced strongly weight and tumor growth in mice and DT administration induced a significant increase in the percentage of blood CD8+ cells in grafted mice. The effect of DT was studied on the cell cycle progression, in the tumor tissue of P388 tumor bearing BDF1 mice and in the P388 murine leukemia cell line in culture. The cell cycle analysis showed that DT decreased both the cells in S phase and the proliferating leukemic cells, with accumulation of the cells in G0/G1 phase. The testosterone can inhibit the proliferation of leukemic cells with a pharmacological dose (10-7 M). This growth inhibition dose and time dependent was associated with cell cycle arrest; P388 cells accumulates in G0/G1 phase. We also observed a correlation between tumor weight and the percentage of cells in G0/G1 and the relative number of cells in proliferative state (S + G2/M). Our experiments showed that testosterone prevents the growth of tumor: indirectly by modulation of subsets T cells distribution and directly by alteration of the cell cycle.
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Affiliation(s)
- S Aboudkhil
- UFR Environnement et sante, Department of Biology, Faculty of Science and Technique, University Hassan II, Quartier yasmina BP 146 Mohammedia, Maroc.
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Skalli S, Alaoui I, Pineau A, Zaid A, Soulaymani R. [Atractylis gummifera L. poisoning: a case report]. Bull Soc Pathol Exot 2002; 95:284-6. [PMID: 12596380] [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: 03/01/2023]
Abstract
Intoxication by Atractylis gummifera L. frequently happens in Morocco. It's often accidental and mortal if no precocious and effective treatment. In order to take stock of this intoxication of which diagnosis is clinical and treatment symptomatic, we suggest to analyze one clinical case of the intoxication by Atractylis gummifera L. on a 12 year old child who accidentally ingested this plant.
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Affiliation(s)
- S Skalli
- Centre anti-poison et de pharmacovigilance, Institut national d'hygiène, 27 Avenue Ibn Batouta, BP 769, Rabat, Maroc
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Skalli S, David JM, Benkirane R, Zaid A, Soulaymani R. [Acute intoxication by redoul (Coriaria myrtifolia L.). Three observations]. Presse Med 2002; 31:1554-6. [PMID: 12422481] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
Abstract
INTRODUCTION Coriaria myrtifolla L. (Redoul) is a shrub of the Mediterranean area. Poisoning with this plant is often accidental, following ingestion of the plant's fruit that are often mistaken for blackberries. OBSERVATIONS Having eaten Coriaria myrtifolla L. berries, three sisters suffered from acute poisoning. One died. COMMENTS Toxic effects are characterized by digestive (nausea, vomiting, abdominal pain), neurological (obnubilation, convulsions and their complications), and respiratory disorders (polypnea, respiratory problems, apnea, short and superficial respiration) together with myositis of the pupils. Treatment of this poisoning is purely symptomatic. In the case of convulsions, rapid resuscitation in an intensive care unit in necessary.
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Affiliation(s)
- Souad Skalli
- Centre Antipoison et de Pharmacovigilance Institut National d'Hygiène, Avenue Ibn Batouta BP 769 Rabat-Maroc.
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22
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Abstract
The human adenine nucleotide translocator-2 promoter is activated by adjacent Sp1 activation elements centered at nucleotides -79 and -68 (Abox and Bbox, respectively), and is repressed by Sp1 bound to a GC element (Cbox) that lies adjacent to transcription start. Here, we address the mechanism of this unique Sp1-mediated repression using transfected Drosophila SL2 and mammalian cell lines. We show that repression is not due to steric interference with assembly of the transcription machinery, as Sp1 bound to the Cbox can, under certain conditions, activate the promoter. Furthermore, ectopic expression of Sp1 deletion mutants in SL2 cells demonstrates that both the Sp1-mediated repression and activation require the D transactivation domain of Sp1 bound to the Cbox. In addition, repression of ABbox-mediated activation is eliminated by separating the Abox and Bbox. Thus, for Cbox-bound Sp1 to repress, Sp1 must be precisely positioned at the region of the ABboxes. Together, these data suggest that the D transactivation domain mediates interactions by Sp1 complexes on separate GC elements that results in repression of the activating Sp1 species.
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Affiliation(s)
- A Zaid
- Department of Biochemistry and Biophysics, Arrhenius Laboratories, Stockholm University, Sweden
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23
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Xu D, Wang Q, Gruber A, Björkholm M, Chen Z, Zaid A, Selivanova G, Peterson C, Wiman KG, Pisa P. Downregulation of telomerase reverse transcriptase mRNA expression by wild type p53 in human tumor cells. Oncogene 2000; 19:5123-33. [PMID: 11064449 DOI: 10.1038/sj.onc.1203890] [Citation(s) in RCA: 181] [Impact Index Per Article: 7.5] [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: 01/02/2023]
Abstract
The p53 tumor suppressor protein inhibits the formation of tumors through induction of cell cycle arrest and/or apoptosis. In the present study we demonstrated that p53 is also a powerful inhibitor of human telomerase reverse transcriptase (hTERT), a key component for telomerase. Activation of either exogenous temperature-sensitive (ts) p53 in BL41 Burkitt lymphoma cells or endogenous wild type (wt) p53 at a physiological level in MCF-7 breast carcinoma cells triggered a rapid downregulation of hTERT mRNA expression, independently of the induction of the p53 target gene p21. Co-transfection of an hTERT promoter construct with wt p53 but not mutant p53 in HeLa cells inhibited the hTERT promoter activity. Furthermore, the activation of the hTERT promoter in Drosophila Schneider SL2 cells was completely dependent on the ectopic expression of Sp1 and was abrogated by wt p53. Finally, wt p53 inhibited Sp1 binding to the hTERT proximal promoter by forming a p53-Sp1 complex. Since activation of telomerase, widely observed in human tumor cell lines and primary tumors, is a critical step in tumorigenesis, wt p53-triggered inhibition of hTERT/telomerase expression may reflect yet another mechanism of p53-mediated tumor suppression. Our findings provide new insights into both the biological function of p53 and the regulation of hTERT/telomerase expression.
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Affiliation(s)
- D Xu
- Department of Medicine, Division of Hematology, Radiumhemmet, Karolinska Hospital, SE-171 76 Stockholm, Sweden
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Abstract
The human cytochrome c(1) promoter is strongly activated in transfected Drosophila SL2 cells expressing exogenous human E2F1. Transfection-deletion experiments, DNase I protection by E2F1 and gel mobility-shift experiments locate E2F1 activation sites to two regions on either side of the transcription start site. Deletion of either region prevents E2F1 activation in transfected SL2 cells, suggesting a co-operative interaction between them. E2F6, a member of the E2F family that lacks transactivation domains but contains specific suppressor domains, inhibits cytochrome c(1) promoter activity when co-transfected into HeLa cells, indicating that the E2F proteins modulate the cytochrome c(1) promoter in mammalian cells. However, E2F is not a general regulator of oxidative phosphorylation genes since three additional nuclear-encoded mitochondrial genes were unaffected by E2F1 or E2F6.
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Affiliation(s)
- K Luciakova
- Department of Biochemistry, Arrhenius Laboratories, Stockholm University, S-106 91 Stockholm, Sweden
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Lamchouri F, Settaf A, Cherrah Y, Hassar M, Zemzami M, Atif N, Nadori EB, Zaid A, Lyoussi B. In vitro cell-toxicity of Peganum harmala alkaloids on cancerous cell-lines. Fitoterapia 2000; 71:50-4. [PMID: 11449470 DOI: 10.1016/s0367-326x(99)00117-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [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: 10/18/2022]
Abstract
The alkaloidic fraction of the methanol extract of Peganum harmala seeds was tested in vitro on three tumoral cell-lines: UCP-Med and Med-mek carcinoma, and UCP-Med sarcoma. Proliferation was significantly reduced at all tested concentrations (20-120 micrograms/ml) during the first 24 h of contact. A cell lysis effect occurred after 24 h and increased thereafter to complete cell death within 48-72 h, depending on tested concentration.
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Affiliation(s)
- F Lamchouri
- Laboratoire de Pharmacologie et Toxicologie, Faculté de Medecine et de Pharmacie B.P. 6203 Rabat Instituts, Rabat, Morocco
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Lamchouri F, Settaf A, Cherrah Y, Zemzami M, Lyoussi B, Zaid A, Atif N, Hassar M. Antitumour principles from Peganum harmala seeds. Therapie 1999; 54:753-8. [PMID: 10709452] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
From ancient times, Peganum harmala was claimed to be an important medicinal plant. Its seeds were known to possess hypothermic, and essentially hallucinogenic properties. Various authors have undertaken studies on the antibacterial, antifungal and antiviral effects of Peganum harmala seeds, but studies on the antitumour activity are not to be found in the literature. In Moroccan traditional medicine, seed powder is sometimes used on skin and subcutaneous tumours. This work was designed to investigate some aspects of the antineoplastic properties of the plant Peganum. Varying concentrations (10 to 120 micrograms/ml) of total alkaloid extracts of Peganum harmala seeds (collected in Morocco) were tested in vitro on four tumoural cell-lines: Med-mek and UCP-Med carcinoma, UCP-Med sarcoma and Sp2/O-Ag14. In vivo experiments were performed with the Sp2/O cell-line grafted subcutaneously in syngenic BALB/c mice. In vitro, proliferation of tumoural cell lines was significantly reduced by all tested concentrations of the Peganum alkaloid extracts during the first 24 h of contact. A cell lysis effect occurred after 24 h and progressed to complete cell death within 48 to 72 h depending on the alkaloid concentration. Results obtained indicate that alkaloids of Peganum have a high cell toxicity in vitro. The active principle at a dose of 50 mg/kg given orally to mice for 40 days was found to have significant antitumoural activity. Peganum harmala alkaloids thus possess significant antitumour potential, which could prove useful as a novel anticancer therapy.
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MESH Headings
- Alkaloids/isolation & purification
- Alkaloids/pharmacology
- Alkaloids/therapeutic use
- Animals
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Antineoplastic Agents, Phytogenic/therapeutic use
- Cyclophosphamide/therapeutic use
- Drug Screening Assays, Antitumor
- Fibrosarcoma/drug therapy
- Liver Neoplasms, Experimental/drug therapy
- Mice
- Mice, Inbred BALB C
- Morocco
- Multiple Myeloma/drug therapy
- Neoplasm Transplantation
- Neoplasms, Experimental/drug therapy
- Phytotherapy
- Plants, Medicinal/chemistry
- Rats
- Rats, Wistar
- Seeds/chemistry
- Tumor Cells, Cultured/drug effects
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Affiliation(s)
- F Lamchouri
- Laboratoire de Pharmacologie et Toxicologie, Faculté de médecine et de Pharmacie de Rabat, Maroc
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Abstract
The mammalian ATP/ADP translocator isoform-2 (ANT2) gene is growth-activated. Regulation of the gene appears to involve Sp1, as an essential activator, and a suppressor through an Sp1 core element next to the transcription start. We show here that the proximal promoter also binds AP-2 strongly and specifically to two sites, one of which overlaps the Sp1 proximal suppressor site. AP-2 binds with an affinity of 10 to15 fold higher than that of Sp1. AP-2 alone does not alter the ANT2 promoter activity in transfected SL2 cells, but enhances the Sp1-dependent activation of the promoter several fold. Enhancement by AP-2 is observed only when Sp1 is limiting for transcription activation. These data suggest that the cellular AP-2/Sp1 ratio might influence ANT2 expression in developing or differentiating cells.
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Affiliation(s)
- R Li
- Department of Biochemistry, Arrhenius Laboratories for Natural Sciences, Stockholm University, Stockholm, S-106 91 Sweden.
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Zaid A, Li R, Luciakova K, Barath P, Nery S, Nelson BD. On the role of the general transcription factor Sp1 in the activation and repression of diverse mammalian oxidative phosphorylation genes. J Bioenerg Biomembr 1999; 31:129-35. [PMID: 10449239 DOI: 10.1023/a:1005499727732] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.1] [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: 11/12/2022]
Abstract
To gain insight into the role of the general transcription factor, Sp1, in the expression of nuclear genes involved in mitochondrial biogenesis, we investigated Sp1 activation of the adenine nucleotide translocator 2, cytochrome c1, F1-ATPase beta subunit, and the mitochondria transcription factor (mtTFA) promoters transfected into Drosophila cell lines. The numbers and organization of GC elements vary in the four promoters, but the magnitude of activation by coexpressed human Sp1 was similar. A feature common to the four promoters is the presence of multiple, proximal Sp1-activating elements that account for 50% or more of the transcription activation by Sp1. The distribution and function of individual distal Sp1 elements is less defined and appear to be more promoter-specific. Finally, data from transfected Drosophila cells provide the first direct proof for the involvement of Sp1 in the negative regulation of the ANT2 promoter and as a possible participant in repression of the beta-subunit promoter. The role of Sp1 in both the positive and negative regulation of OXPHOS promoters is unique.
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Affiliation(s)
- A Zaid
- Department of Biochemistry, Arrhenius Laboratories, Stockholm University, Sweden
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29
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Abstract
Three thermophilic bacteria strains, designated strain BS1, BS2 and BS3, resistant to beta-lactam antibiotics, and leaving at an optimal temperature for growth of about 50 degrees C, were isolated from traditional baths in Meknes-city in Morocco. Physiological and biochemical studies showed that these organisms belong to Gram positive Bacilli. They could not be identified with the Bergey's Manuel of Systematic Bacteriology (1986). The dosage of beta-lactamase during the exponential growth phase has revealed that the strain BS3 produces a maximal amount of this enzyme. Studies aimed at determining the optimal conditions for incubation and growth have been performed in order to optimize the excretion of beta-lactamase by BS3 cells and thus facilitate the purification and and characterization of this enzyme.
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Affiliation(s)
- F R Filali
- Département de Biologie, Faculté des Sciences, Université My Ismaïl, Zitoune, Meknès, Maroc
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30
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Li R, Luciakova K, Zaid A, Betina S, Fridell E, Nelson BD. Thyroid hormone activates transcription from the promoter regions of some human nuclear-encoded genes of the oxidative phosphorylation system. Mol Cell Endocrinol 1997; 128:69-75. [PMID: 9140077 DOI: 10.1016/s0303-7207(97)04023-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Thyroid hormone (T3) modulates the mRNA levels for cytochrome c and the adenine nucleotide translocator-2 (ANT2) in adult rat liver. Here we show that T3 activates expression of a reporter gene driven from the human cytochrome c1 and ANT2 promoters transfected into human choriocarcinoma JEG3 cells. By contrast, the human F1-ATPase beta-subunit promoter responded marginally, thus providing a pattern of differential expression similar to that earlier observed in rats in vivo. T3-activation is dependent on co-expression of the thyroid hormone receptor (TR alpha1). Co-expression of both the TR and RXR receptors had no additional effect. Transient transfection of deletion constructs showed that T3 activation is retained by the proximal regions of the cytochrome c1 and ANT2 promoters, and, in the case of cytochrome c1, is lost upon removal of a fragment containing the transcription initiator ((nucleotides) (nt) + 1 to + 100). The promoter regions supporting T3-activation of the reporter genes appear to lack strong DNA binding sites for TR and retinoid X receptor (RXR).
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Affiliation(s)
- R Li
- Department of Biochemistry, Stockholm University, Sweden
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31
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Zaid A, Fullerton JT, Moore T. Factors affecting access to prenatal care for U.S./Mexico border-dwelling Hispanic women. J Nurse Midwifery 1996; 41:277-84. [PMID: 8828313 DOI: 10.1016/0091-2182(96)00030-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A study of attitudes, beliefs, and behaviors about prenatal care was conducted among Hispanic women who resided on the U.S.-Mexico border. As part of a larger study that included chart reviews of 752 mothers and postpartum interviews of 587 of these women, the 118 women who elected to deliver in the university-affiliated teaching hospital, rather than any of four participating private hospitals, were reviewed separately. This study sought to determine whether the prenatal care behaviors and obstetric outcomes experienced by this subset of women would contribute to any particular adverse impact on the teaching hospital, such as the need for additional intervention services. The most common barriers to prenatal care identified among women in the entire study were the same factors identified among women in the university hospital, including lack of financial means to pay for care, lack of information concerning where to obtain care, inadequate infrastructure of clinic services, sadness, and depression. Maternal and infant outcomes were generally favorable, even for women who did not receive any measure of prenatal care.
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Zaid A, Hughes H. Water loss and polyethylene glycol-mediated acclimatization of in vitro-grown seedlings of 5 cultivars of date palm (Phoenix dactylifera L.) plantlets. Plant Cell Rep 1995; 14:385-388. [PMID: 24185338 DOI: 10.1007/bf00238602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/1993] [Revised: 09/12/1994] [Indexed: 06/02/2023]
Abstract
Plantlets derived from shoot-tips of seedlings from five cultivars of date palm, Phoenix dactylifera L., were subjected to polyethylene glycol in liquid medium. Comparisons of water loss of detached leaves among in vitro-grown, polyethylene glycol-treated and greenhouse-grown plants showed significant differences with treatment for all cultivars studied. For each treatment, significant differences were also found among cultivars. The common result was that the percent of moisture loss of non-treated in vitro-grown plantlets was almost twice that of greenhouse-grown plants. Polyethylene glycol-treated plantlets showed a water loss of approximately 27%, similar to that of greenhouse plants as compared to an average of 40% in control plants. This demonstrates the possibility of using polyethylene glycol as an osmoticum for in vitro acclimatization of plantlets prior to transfer to soil.
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Affiliation(s)
- A Zaid
- Department of Biology, Faculty of Sciences, Semlalia, P.O. Box S15, Marrackech, Morocco
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Zaid A, Hughes H. In vitro acclimatization of date palm (Phoenix dactylifera L.) plantlets: A quantitative comparison of epicuticular leaf wax as a function of polyethylene glycol treatment. Plant Cell Rep 1995; 15:111-114. [PMID: 24185666 DOI: 10.1007/bf01690265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/1993] [Revised: 03/28/1995] [Indexed: 06/02/2023]
Abstract
Wax deposits on leaf surfaces ofin vitro-grown plantlets,in vitro plantlets treated with polyethylene glycol and greenhouse-grown seedlings from five cultivars of date palm (Phoenix dactylifera L.) were extracted and quantified. Significant variations among treatments and cultivars were obtained. Greenhouse-grown plants had the greatest wax deposits followed by the acclimatized plantlets.In vitro plantlets had an average of 15% of the wax of greenhouse plants. Cultivar and plant age differences had a significant effect on the quantity of wax deposits. Greenhouse seedlings of 'Majhool', 'Deglet Noor' and 'Khadraoui' (cultivars grown under irrigation) had less wax accumulation than 'Zahidi' and 'Sayer', dryland cultivars.The increase in wax deposition as a result of polyethylene glycol treatment, explains in part, the decreased water loss observed in acclimatized plantlets when transferredex vitro.
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Affiliation(s)
- A Zaid
- Department of Biology, Faculty of Science Marrakech-Semlalila, BPS 15, Marrakech, Morocco
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35
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Chevallet P, Atmani Z, Fulcrand P, Zaid A, Castel J, Orzalesi H, Masse C, Sassine A. Synthèse et activités myocardiques d'(α-amino aryl méthyl)-3 triméthyl-1,2,2 cyclopentane méthanol-1 et de leurs analogues cyliques oxazépiniques. Eur J Med Chem 1988. [DOI: 10.1016/0223-5234(88)90091-8] [Citation(s) in RCA: 4] [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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