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Al-U'datt DGF, Alu'datt MH, Tranchant CC, Al-Dwairi A, Al-Shboul O, Almajwal A, Elsalem L, Jaradat S, Alzoubi KH, Faleh BG, Ahmed YB, Alqbelat J. Royal jelly mediates fibrotic signaling, collagen cross-linking and cell proliferation in cardiac fibroblasts. Biomed Pharmacother 2023; 164:114922. [PMID: 37236025 DOI: 10.1016/j.biopha.2023.114922] [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: 01/27/2023] [Revised: 05/16/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023] Open
Abstract
Royal jelly (RJ) is a multifunctional bee product with a unique composition and wide-ranging biological properties, including antioxidant, anti-inflammatory and antiproliferative activities. Still, little is known about the possible myocardial protective properties of RJ. Considering that sonication could enhance RJ bioactivity, this study aimed to assess the effects of non-sonicated (NS) and sonicated (S) RJ on fibrotic signaling, cell proliferation, and collagen production in cardiac fibroblasts. S-RJ was produced by ultrasonication at 20 kHz. Ventricular fibroblasts isolated from neonatal rats were cultured and treated with different concentrations of NS-RJ or S-RJ (0, 50, 100, 150, 200, and 250 µg/well). S-RJ significantly depressed the expression levels of transglutaminase 2 (TG2) mRNA across all the concentrations tested and was inversely associated with the expression of this profibrotic marker. S-RJ and NS-RJ displayed distinct dose-dependent effects on mRNA expression of several other profibrotic, proliferation, and apoptotic markers. Unlike NS-RJ, S-RJ elicited strong negative dose-dependent relationships with the expression of profibrotic markers (TG2, COL1A1, COL3A1, FN1, CTGF, MMP-2, α-SMA, TGF-β1, CX43, periostin), as well as proliferation (CCND1) and apoptotic (BAX, BAX/BCL-2) markers, indicating that RJ dose-response effects were significantly modified by sonification. NS-RJ and S-RJ increased the content of soluble collagen, while decreasing collagen cross-linking. Collectively, these findings show that S-RJ has a greater range of action than NS-RJ for downregulating the expression of biomarkers associated with cardiac fibrosis. Reduced biomarker expression and collagen cross-linkages upon cardiac fibroblast treatment with specific concentrations of S-RJ or NS-RJ suggests putative roles and mechanisms by which RJ may confer some protection against cardiac fibrosis.
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Affiliation(s)
- Doa'a G F Al-U'datt
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan.
| | - Muhammad H Alu'datt
- Department of Nutrition and Food Technology, Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan
| | - Carole C Tranchant
- School of Food Science, Nutrition and Family Studies, Faculty of Health Sciences and Community Services, Université de Moncton, New Brunswick, Canada.
| | - Ahmed Al-Dwairi
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Othman Al-Shboul
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Ali Almajwal
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Lina Elsalem
- Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Saied Jaradat
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Karem H Alzoubi
- Department of Pharmacy Practice and Pharmacotherapeutics, College of Pharmacy, University of Sharjah, Sharjah, United Arab Emirates; Department of Clinical Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Belal G Faleh
- General Surgery Department, Princess Basma Teaching Hospital, Irbid, Jordan
| | - Yaman B Ahmed
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Jenan Alqbelat
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
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Al-U'datt DGF, Tranchant CC, Alu'datt M, Abusara S, Al-Dwairi A, AlQudah M, Al-Shboul O, Hiram R, Altuntas Y, Jaradat S, Alzoubi KH. Inhibition of transglutaminase 2 (TG2) ameliorates ventricular fibrosis in isoproterenol-induced heart failure in rats. Life Sci 2023; 321:121564. [PMID: 36931499 DOI: 10.1016/j.lfs.2023.121564] [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: 12/03/2022] [Revised: 03/06/2023] [Accepted: 03/06/2023] [Indexed: 03/17/2023]
Abstract
AIMS Transglutaminase (TG) inhibitors represent promising therapeutic interventions in cardiac fibrosis and related dysfunctions. However, it remains unknown how TG inhibition, TG2 in particular, affects the signaling systems that drive pathological fibrosis. This study aimed to examine the effect TG inhibition by cystamine on the progression of isoproterenol (ISO)-induced cardiac fibrosis and dysfunction in rats. MATERIALS AND METHODS Cardiac fibrosis was established by intraperitoneal injection of ISO to rats (ISO group), followed by 6 weeks of cystamine injection (ISO + Cys group). The control groups were administered normal saline alone or with cystamine. Hemodynamics, lipid profile, liver enzymes, urea, and creatinine were assessed in conjunction with heart failure markers (serum NT-proANP and cTnI). Left ventricular (LV) and atrial (LA) fibrosis, total collagen content, and mRNA expression of profibrotic markers including TG2 were quantified by Masson's trichrome staining, LC-MS/MS and quantitative PCR, respectively. KEY FINDINGS Cystamine administration to ISO rats significantly decreased diastolic and mean arterial pressures, total cholesterol, triglycerides, LDL, liver enzymes, urea, and creatinine levels, while increasing HDL. NT-proANP and cTnI serum levels remained unchanged. In LV tissues, significant reductions in ISO-induced fibrosis and elevated total collagen content were achieved after cystamine treatment, together with a reduction in TG2 concentration. Reduced mRNA expression of several profibrotic genes (COL1A1, FN1, MMP-2, CTGF, periostin, CX43) was also evidenced in LV tissues of ISO rats upon cystamine administration, whereas TGF-β1 expression was depressed in LA tissues. Cystamine decreased TG2 mRNA expression in the LV of control rats, while LV expression of TG2 was relatively low in ISO rats irrespective of cystamine treatment. SIGNIFICANCE TG2 inhibition by cystamine in vivo exerted cardioprotective effects against ISO-induced cardiac fibrosis in rats decreasing the LV abundance of several profibrotic markers and the content of TG2 and collagen, suggesting that TG2 pharmacological inhibition could be beneficial to alleviate cardiac fibrosis.
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Affiliation(s)
- Doa'a G F Al-U'datt
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan.
| | - Carole C Tranchant
- School of Food Science, Nutrition and Family Studies, Faculty of Health Sciences and Community Services, Université de Moncton, New Brunswick, Canada
| | - Muhammad Alu'datt
- Department of Nutrition and Food Technology, Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan
| | - Sara Abusara
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Ahmed Al-Dwairi
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Mohammad AlQudah
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan; Physiology Department, Arabian Gulf University, Manama, Bahrain
| | - Othman Al-Shboul
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Roddy Hiram
- Montreal Heart Institute and Department of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Yasemin Altuntas
- Montreal Heart Institute and Department of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Saied Jaradat
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Karem H Alzoubi
- Department of Pharmacy Practice and Pharmacotherapeutics, University of Sharjah, Sharjah, United Arab Emirates; Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
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3
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Al-Sweedan SA, Samara DN, Hamaidi MA, Al-Hamad MM, Alsweedan D, Jaradat S. Clinical Characteristics and Outcomes of Children and Adolescents With Cancer Infected With SARS-CoV-2 at a Tertiary Care Medical Center in Jordan. J Pediatr Hematol Oncol 2023; 45:e208-e213. [PMID: 35383653 DOI: 10.1097/mph.0000000000002460] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 03/04/2022] [Indexed: 01/08/2023]
Abstract
BACKGROUND Our knowledge about severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is still evolving; its effects on children with cancer need to be studied more. The aim of this study is to present our experience with SARS-CoV-2 infection in this population and to highlight specific complications and outcomes. MATERIALS AND METHODS This is a retrospective and prospective observational study, which involved 21 cancer patients below the age of 18 years in north Jordan. Data regarding their age, sex, cancer type and progression, phase of treatment, and others were collected and reviewed. Patients were classified into confirmed, probable, and suspect according to the Centers for Disease Control and Prevention's (CDC) 2021 classification. RESULTS A total of 21 patients with malignancy were included. Ten patients were males (48%). Mean age of 8.8 years (3 mo to 18 y). Two patients (9.5%) had died; one (4.7%) death was coronavirus disease 2019 (COVID-19)-related and the other one (4.7%) was due to cancer progression. Two patients (9.5%) had multisystem inflammatory syndrome in children. Both disease progression and new malignancies were documented in 11 (52%) of our patients. CONCLUSIONS Diagnosis of COVID-19 should not distract physicians from investigating new malignancy or relapse as they may come together or may be related to COVID-19 infection. More studies are needed to identify the contribution of SARS-CoV-2 in the pathogenesis of cancer.
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Affiliation(s)
| | | | | | | | | | - Saied Jaradat
- Princess Haya Biotechnology Center, Jordan University of Science & Technology, Irbid, Jordan
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4
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Al-U’datt DGF, Tranchant CC, Al-Husein B, Hiram R, Al-Dwairi A, AlQudah M, Al-shboul O, Jaradat S, Alqbelat J, Almajwal A. Involvement and possible role of transglutaminases 1 and 2 in mediating fibrotic signalling, collagen cross-linking and cell proliferation in neonatal rat ventricular fibroblasts. PLoS One 2023; 18:e0281320. [PMID: 36848364 PMCID: PMC9970086 DOI: 10.1371/journal.pone.0281320] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 01/19/2023] [Indexed: 03/01/2023] Open
Abstract
Transglutaminase (TG) isoforms control diverse normal and pathophysiologic processes through their capacity to cross-link extracellular matrix (ECM) proteins. Their functional and signalling roles in cardiac fibrosis remain poorly understood, despite some evidence of TG2 involvement in abnormal ECM remodelling in heart diseases. In this study, we investigated the role of TG1 and TG2 in mediating fibrotic signalling, collagen cross-linking, and cell proliferation in healthy fibroblasts by siRNA-mediated knockdown. siRNA for TG1, TG2 or negative control was transfected into cultured neonatal rat ventricular fibroblasts and cardiomyocytes. mRNA expression of TGs and profibrotic, proliferation and apoptotic markers was assessed by qPCR. Cell proliferation and soluble and insoluble collagen were determined by ELISA and LC-MS/MS, respectively. TG1 and TG2 were both expressed in neonatal rat cardiomyocytes and fibroblasts before transfection. Other TGs were not detected before and after transfection. TG2 was predominantly expressed and more effectively silenced than TG1. Knocking down TG1 or TG2 significantly modified profibrotic markers mRNA expression in fibroblasts, decreasing connective tissue growth factor (CTGF) and increasing transforming growth factor-β1 compared to the negative siRNA control. Reduced expression of collagen 3A1 was found upon TG1 knockdown, while TG2 knockdown raised α-smooth muscle actin expression. TG2 knockdown further increased fibroblast proliferation and the expression of proliferation marker cyclin D1. Lower insoluble collagen content and collagen cross-linking were evidenced upon silencing TG1 or TG2. Transcript levels of collagen 1A1, fibronectin 1, matrix metalloproteinase-2, cyclin E2, and BCL-2-associated X protein/B-cell lymphoma 2 ratio were strongly correlated with TG1 mRNA expression, whereas TG2 expression correlated strongly with CTGF mRNA abundance. These findings support a functional and signalling role for TG1 and TG2 from fibroblasts in regulating key processes underlying myocardial ECM homeostasis and dysregulation, suggesting that these isoforms could be potential and promising targets for the development of cardiac fibrosis therapies.
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Affiliation(s)
- Doa’a G. F. Al-U’datt
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Carole C. Tranchant
- School of Food Science, Nutrition and Family Studies, Faculty of Health Sciences and Community Services, Université de Moncton, New Brunswick, Canada
| | - Belal Al-Husein
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Roddy Hiram
- Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Ahmed Al-Dwairi
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Mohammad AlQudah
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
- Physiology Department, Arabian Gulf University, Manama, Bahrain
| | - Othman Al-shboul
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Saied Jaradat
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid, Jordan
| | - Jenan Alqbelat
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Ali Almajwal
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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Al-U'datt DGF, Tranchant CC, Al-Dwairi A, AlQudah M, Al-Shboul O, Hiram R, Allen BG, Jaradat S, Alqbelat J, Abu-Zaiton AS. Implications of enigmatic transglutaminase 2 (TG2) in cardiac diseases and therapeutic developments. Biochem Pharmacol 2022; 201:115104. [PMID: 35617996 DOI: 10.1016/j.bcp.2022.115104] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 05/18/2022] [Accepted: 05/18/2022] [Indexed: 01/07/2023]
Abstract
Cardiac diseases are the leading cause of mortality and morbidity worldwide. Mounting evidence suggests that transglutaminases (TGs), tissue TG (TG2) in particular, are involved in numerous molecular responses underlying the pathogenesis of cardiac diseases. The TG family has several intra- and extracellular functions in the human body, including collagen cross-linking, angiogenesis, cell growth, differentiation, migration, adhesion as well as survival. TGs are thiol- and calcium-dependent acyl transferases that catalyze the formation of a covalent bond between the γ-carboxamide group of a glutamine residue and an amine group, thus increasing the stability, rigidity, and stiffness of the myocardial extracellular matrix (ECM). Excessive accumulation of cross-linked collagen leads to increase myocardial stiffness and fibrosis. Beyond TG2 extracellular protein cross-linking action, mounting evidence suggests that this pleiotropic TG isozyme may also promote fibrotic diseases through cell survival and profibrotic pathway activation at the signaling, transcriptional and translational levels. Due to its multiple functions and localizations, TG2 fulfils critical yet incompletely understood roles in myocardial fibrosis and associated heart diseases, such as cardiac hypertrophy, heart failure, and age-related myocardial stiffness under several conditions. This review summarizes current knowledge and existing gaps regarding the ECM-dependent and ECM-independent roles of TG2 and highlights the therapeutic prospects of targeting TG2 to treat cardiac diseases.
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Affiliation(s)
- Doa'a G F Al-U'datt
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan.
| | - Carole C Tranchant
- School of Food Science, Nutrition and Family Studies, Faculty of Health Sciences and Community Services, Université de Moncton, New Brunswick, Canada
| | - Ahmed Al-Dwairi
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Mohammad AlQudah
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Othman Al-Shboul
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Roddy Hiram
- Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada; Department of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Bruce G Allen
- Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada; Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Department of Pharmacology and Physiology, Université de Montréal, Montreal, Quebec, Canada; Department of Biochemistry and Molecular Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Saied Jaradat
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Jenan Alqbelat
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Ahmed S Abu-Zaiton
- Department of Biological Sciences, Al al-bayt University, Al-Mafraq, Jordan
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Alzoubi KH, Al-Dekah AM, Jaradat S, Alrabadi N. L-Carnitine prevents memory impairment induced by post-traumatic stress disorder. Restor Neurol Neurosci 2021; 40:53-61. [PMID: 34974445 DOI: 10.3233/rnn-211191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Post-traumatic stress disorder (PTSD) is a genuine obstructing mental disorder. As indicated by the name, it is related to the patients' stress augmented by life-threatening conditions or accidents. The PTSD has linked to oxidative stress that can result in neurodegeneration. L-carnitine (L-CAR) is known for its antioxidant properties, which can protect against neuronal damage. OBJECTIVE In the current study, we investigated the beneficial effects of L-CAR on the memory impairment induced by PTSD using a rat model. METHODS A model of single-prolonged stress (a cycle of restraining, forced swimming, rest, and finally diethyl ether exposure for 2 h, 20 min, 15 min, and 1-2 min, respectively) was used to induce PTSD-like behavior. Intraperitoneal L-CAR treatment (300 mg/kg/day) was introduced for four weeks. Both memory and special learning were evaluated utilizing the radial arm water maze (RAWM). Moreover, the levels of glutathione peroxidase (GPx), glutathione reduced (GSH), and glutathione oxidized (GSSG) were assessed as biomarkers oxidative stress in the hippocampus. RESULTS The results demonstrated that both the short and long-term memories were impaired by PTSD/SPS model (P < 0.05), while L-CAR treatment prevented this memory impairment in PTSD rats. Besides, L-CAR prevented the reduction in GPx activity and increase in GSSG, which were altered in the hippocampus of the PTSD/SPS rats (P < 0.05). Levels of GSH were not changed in PTSD and/or L-CAR rats. CONCLUSIONS L-CAR administration prevented short- and long-term memories' impairments induced in the PTSD/SPS rat model. This is probably related to its antioxidant effects in the hippocampus.
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Affiliation(s)
- Karem H Alzoubi
- Department of Clinical Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Arwa M Al-Dekah
- Department of Applied Biology, Jordan University of Science and Technology, Irbid, Jordan
| | - Saied Jaradat
- Department of Applied Biology, Jordan University of Science and Technology, Irbid, Jordan
| | - Nasr Alrabadi
- Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
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7
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Elnasser Z, Elsamarneh R, Obeidat H, Amarin Z, Jaradat S, Kaplan N. In-vitro activity of tigecycline against multidrug-resistant Gram negative bacteria: The experience of a university hospital. J Infect Public Health 2021; 14:478-483. [PMID: 33743369 DOI: 10.1016/j.jiph.2020.12.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 12/05/2020] [Accepted: 12/08/2020] [Indexed: 01/04/2023] Open
Abstract
The emergence of multidrug-resistant Gram negative bacteria has given rise to significant therapeutic challenges. These pathogens may have developed resistance to tigecycline, which is an alternative antibiotic used empirically in the treatment of serious infections. The objectives of this study were to identify the in-vitro activity of tigecycline against multidrug-resistant Gram negative strains isolated from clinical specimens and their related genes, at a university hospital. For this, 150 clinical isolates of multidrug-resistant Gram negative cultures from various clinical specimens were collected. Bacterial isolates were cultured, identified and their antibiotic susceptibilities were determined. Polymerase chain reaction was performed to amplify AcrB, AmpC, RamR, MexR, AdeB, TetA genes. Results revealed that all isolates were multidrug-resistant. The resistance of isolates was 91.4% to aztreonam, 94.6% to piperacillin, 34% to imipenem, 38.7% to meropenem, 71.3% to levofloxacin, 97.3% to ceftriaxone, 94.7% to cefepime, 9.3% to colistin, 78% to tetracycline, 21.4% to tigecycline and 68% to trimethoprim. AcrB, AmpC, RamR, MexR, AdeB, TetA genes were present in multidrug-resistant Gram negative bacteria. AcrB, RamR, TetA genes were related to tigecycline resistance. It is concluded that infections caused by multidrug-resistant Gram negative bacteria occur at a high rate. Most isolates were multi drug resistant, with 21.4% being resistant to tigecycline.
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Affiliation(s)
- Z Elnasser
- Pathology and Microbiology Department, Jordan University of Science and Technology, Jordan.
| | - R Elsamarneh
- Medical Laboratory Sciences Department, Jordan University of Science and Technology, Jordan
| | - H Obeidat
- Medical Laboratory Sciences Department, Jordan University of Science and Technology, Jordan
| | - Z Amarin
- Department of Obstetrics and Gynecology, Jordan University of Science and Technology, Jordan
| | - S Jaradat
- Department of Biotechnology and Genetic Engineering, Jordan university of Science and Technology, Jordan
| | - N Kaplan
- Pathology and Microbiology Department, Jordan University of Science and Technology, Jordan
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8
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Al Hamad M, Matalka I, Al Zoubi MS, Armogida I, Khasawneh R, Al-Husaini M, Sughayer M, Jaradat S, Al-Nasser AD, Mazzanti CM. Human Mammary Tumor Virus, Human Papilloma Virus, and Epstein-Barr Virus Infection Are Associated With Sporadic Breast Cancer Metastasis. Breast Cancer (Auckl) 2020. [PMID: 33281452 DOI: 10.1177/1178223420976388.] [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: 11/15/2022] Open
Abstract
Background Viral cause of sporadic breast cancer (SBC) has been suggested based on the experimental murine model of mammary tumor caused by mouse mammary tumor virus (MMTV), Epstein-Barr virus (EBV), and human papillomavirus (HPV). While some studies have demonstrated the presence of viral sequences of MMTV, HPV, and EBV in breast cancer cells, others failed. These contradictions may be attributed to the geographical distribution of breast cancer incidence and/or technical variations. In the current study, we aimed to investigate the correlation of MMTV, HPV, and EBV infections with the development of breast cancer in Jordanian patients. Methods One hundred SBC tissue samples were subjected to laser capture microdissection for the selection of tumor cells populations. Fluorescence polymerase chain reaction (PCR) was used to detect the presence of the MMTV env-like sequences. Real-time PCR was used for HPV and EBV detection, and EBV was further confirmed by chromogen in situ hybridization (CISH). Results Mouse mammary tumor virus, HPV, and EBV were detected in SBC in 11%, 21%, and 23%, respectively. Only 3 of 52 (5.7%) positive cases demonstrated multiple virus infections. However, 49 of 52 (94%) of the positive cases revealed the presence of 1 type of viral sequences. Consequently, 52% of the studied breast cancer cases were infected with at least 1 type of the aforementioned viruses. Conclusions The current cohort suggests that MMTV, HPV, and EBV have a potential role in the development of breast cancer and adding more reasons to proceed with the quest of a possible viral origin of breast cancer.
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Affiliation(s)
- Mohammad Al Hamad
- Department of Pathology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ismail Matalka
- Department of Pathology and Microbiology, Faculty of Medicine, Jordan University of Science and Technology (JUST), Irbid, Jordan
| | - Mazhar Salim Al Zoubi
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid, Jordan
| | - Ivana Armogida
- Department of Pathology, Pisa University Hospital, Pisa, Italy.,Presently at Illumina Cambridge Ltd, Cambridge, UK
| | - Rawan Khasawneh
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid, Jordan
| | - Maysa Al-Husaini
- Department of Pathology and Laboratory Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Maher Sughayer
- Department of Pathology and Laboratory Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Saied Jaradat
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid, Jordan
| | - Amjad D Al-Nasser
- Department of Statistics, Faculty of Science, Yarmouk University, Irbid, Jordan
| | - Chiara Maria Mazzanti
- Fondazione Pisana per la Scienza, Pisa, Italy.,Division of Pathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
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9
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Al Hamad M, Matalka I, Al Zoubi MS, Armogida I, Khasawneh R, Al-Husaini M, Sughayer M, Jaradat S, Al-Nasser AD, Mazzanti CM. Human Mammary Tumor Virus, Human Papilloma Virus, and Epstein-Barr Virus Infection Are Associated With Sporadic Breast Cancer Metastasis. Breast Cancer (Auckl) 2020; 14:1178223420976388. [PMID: 33281452 PMCID: PMC7691892 DOI: 10.1177/1178223420976388] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/30/2020] [Indexed: 12/16/2022]
Abstract
Background: Viral cause of sporadic breast cancer (SBC) has been suggested based on the
experimental murine model of mammary tumor caused by mouse mammary tumor
virus (MMTV), Epstein-Barr virus (EBV), and human papillomavirus (HPV).
While some studies have demonstrated the presence of viral sequences of
MMTV, HPV, and EBV in breast cancer cells, others failed. These
contradictions may be attributed to the geographical distribution of breast
cancer incidence and/or technical variations. In the current study, we aimed
to investigate the correlation of MMTV, HPV, and EBV infections with the
development of breast cancer in Jordanian patients. Methods: One hundred SBC tissue samples were subjected to laser capture
microdissection for the selection of tumor cells populations. Fluorescence
polymerase chain reaction (PCR) was used to detect the presence of the MMTV
env-like sequences. Real-time PCR was used for HPV and EBV detection, and
EBV was further confirmed by chromogen in situ hybridization (CISH). Results: Mouse mammary tumor virus, HPV, and EBV were detected in SBC in 11%, 21%, and
23%, respectively. Only 3 of 52 (5.7%) positive cases demonstrated multiple
virus infections. However, 49 of 52 (94%) of the positive cases revealed the
presence of 1 type of viral sequences. Consequently, 52% of the studied
breast cancer cases were infected with at least 1 type of the aforementioned
viruses. Conclusions: The current cohort suggests that MMTV, HPV, and EBV have a potential role in
the development of breast cancer and adding more reasons to proceed with the
quest of a possible viral origin of breast cancer.
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Affiliation(s)
- Mohammad Al Hamad
- Department of Pathology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ismail Matalka
- Department of Pathology and Microbiology, Faculty of Medicine, Jordan University of Science and Technology (JUST), Irbid, Jordan
| | - Mazhar Salim Al Zoubi
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid, Jordan
| | - Ivana Armogida
- Department of Pathology, Pisa University Hospital, Pisa, Italy.,Presently at Illumina Cambridge Ltd, Cambridge, UK
| | - Rawan Khasawneh
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid, Jordan
| | - Maysa Al-Husaini
- Department of Pathology and Laboratory Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Maher Sughayer
- Department of Pathology and Laboratory Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Saied Jaradat
- Princess Haya Biotechnology Center, Jordan University of Science and Technology, Irbid, Jordan
| | - Amjad D Al-Nasser
- Department of Statistics, Faculty of Science, Yarmouk University, Irbid, Jordan
| | - Chiara Maria Mazzanti
- Fondazione Pisana per la Scienza, Pisa, Italy.,Division of Pathology, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
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10
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Al-Domi HA, Faqih A, Jaradat Z, Al-Dalaeen A, Jaradat S, Amarneh B. Physical activity, sedentary behaviors and dietary patterns as risk factors of obesity among Jordanian schoolchildren. Diabetes Metab Syndr 2019; 13:189-194. [PMID: 30641695 DOI: 10.1016/j.dsx.2018.08.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 08/31/2018] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To identify certain risk factors associated with childhood obesity related to lifestyle; dietary patterns, physical activity, and sedentary behavior. METHODS A cross-sectional study was conducted among 977 schoolchildren (473 boys and 449 girls) aged 7-18 years. Children were selected randomly from three main cities in Jordan: Amman, Irbid, and Mafraq by using multistage cluster sampling method. Sedentary behaviors, physical activity and child eating behaviors were measured by using validated questionnaires. Overweight and obesity were defined by International Obesity Task Force (IOTF) criteria. RESULTS Sedentary activities increase the risk of overweight among schoolchildren by 2-fold [RR(Relative risk) = 2.0, 95% CI(Confidence interval) (1.1-3.6), p = 0.02]. Whereas, sedentary activities for less than 3 h increased the risk of overweight by 0.8-fold [RR = 0.8, 95%CI (0.6-1.3), P = 0.388], Schoolchildren who spent<30 min/day in exercising decreased the risk of overweight by 0.5-fold [RR = 0.5, 95% CI (0.2-1.0), P = 0.06)]. Both Students who ate one meal daily and daily ate snacks from schools cafeterias had a higher tendency to be obese [(RR = 1.8, 95%CI (0.5-5.9), P = 0.368], and [RR = 1.5, 95%CI (0.9-2.5), P = 0.169] respectively. CONCLUSIONS Physical activity, eating meals regularly and homemade food, all together play a significant role in decreasing obesity among Jordanian schoolchildren, thus a national policy that promoting active living and healthy eating among schoolchildren is warranted.
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Affiliation(s)
- Hayder A Al-Domi
- Department of Nutrition and Food Technology, School of Agriculture, The University of Jordan, Amman, 11491, Jordan.
| | - Ahmad Faqih
- Department of Nutrition and Food Technology, School of Agriculture, The University of Jordan, Amman, 11491, Jordan
| | - Ziad Jaradat
- Department of Biotechnology and Genetic Engineering, Faculty of Science, Jordan University of Science and Technology, Jordan
| | - Anfal Al-Dalaeen
- Department of Nutrition and Food Technology, School of Agriculture, The University of Jordan, Amman, 11491, Jordan
| | - Saied Jaradat
- Department of Biotechnology and Genetic Engineering, Faculty of Science, Jordan University of Science and Technology, Jordan
| | - Batool Amarneh
- Department of Biotechnology and Genetic Engineering, Faculty of Science, Jordan University of Science and Technology, Jordan
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11
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Bodoor K, Al-Ghabkari A, Matalka I, Haddad Y, Alkhateeb A, Jaradat S, Jaradat ZW, Al-Ghazo M, Abu-sheikha A, Jalboush SA, Jarun Y. Assessment of p53 mutations, expression and prognosis in bladder cancer patients from Jordan: Identification of novel deletion mutations in the DNA-binding domain. Meta Gene 2017. [DOI: 10.1016/j.mgene.2017.01.002] [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: 10/20/2022] Open
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12
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Jaradat S, Al-Rababah B, Hazza I, Akl K, Saca E, Al-Younis D. Molecular analysis of the CTNS gene in Jordanian families with nephropathic cystinosis. Nefrologia 2015; 35:547-53. [DOI: 10.1016/j.nefro.2015.09.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 06/10/2015] [Indexed: 10/22/2022] Open
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13
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14
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Hadera MG, Eloqayli H, Jaradat S, Nehlig A, Sonnewald U. Astrocyte-neuronal interactions in epileptogenesis. J Neurosci Res 2015; 93:1157-64. [DOI: 10.1002/jnr.23584] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 02/13/2015] [Accepted: 02/13/2015] [Indexed: 01/13/2023]
Affiliation(s)
- Mussie Ghezu Hadera
- Department of Neuroscience; Faculty of Medicine; Norwegian University of Science and Technology; Trondheim Norway
| | - Haytham Eloqayli
- Department of Neuroscience; Faculty of Medicine; Jordan University of Science and Technology; Irbid Jordan
| | - Saied Jaradat
- Princess Haya Biotechnology Center; Jordan University of Science and Technology; Irbid Jordan
| | - Astrid Nehlig
- INSERM U1129 "Infantile Epilepsies and Brain Plasticity"; Paris, France; Paris Descartes University-Sorbonne Paris Cité; Paris France
- CEA, Gif sur Yvette; France
| | - Ursula Sonnewald
- Department of Neuroscience; Faculty of Medicine; Norwegian University of Science and Technology; Trondheim Norway
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15
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Obeidat B, Matalka I, Mohtaseb A, Jaradat S, Hayajneh W, Khasawneh R, Haddad H, Obeidat F. Prevalence and distribution of high-risk human papillomavirus genotypes in cervical carcinoma, low-grade, and high-grade squamous intraepithelial lesions in Jordanian women. EUR J GYNAECOL ONCOL 2013; 34:257-260. [PMID: 23967558] [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: 06/02/2023]
Abstract
PURPOSE To assess high-risk human papillomavirus (HR-HPV) prevalence, and genotype distribution in invasive cervical cancer (CC) and its precursors in Jordanian patients. MATERIALS AND METHODS A total of 124 different specimens of formalin-fixed, paraffin embedded samples, including 18 low-grade squamous intraepithelial lesions (LSILs), 28 high grade squamous intraepithelial lesions (HSILs), and 78 CCs were included in this study. HPV detection and typing was done using HPV High Risk Typing Real-TM Kit that enables the concomitant detection of the 12 most common HR-HPVs. RESULTS Overall, HR-HPV prevalence was 87.2%, 78.6%, and 72.2% in CC, HSIL, and LSIL respectively. Genotype 16 was the most predominant in all cervical lesions, detected in 53.8%, 46.4%, and 38.9% of CC, HSIL, and LSIL, respectively. Among all HPV genotypes, HPV-16 and HPV-18 were found separately or together in 50% of LSILs, 60.7% of HSILs, and 76.9% of CC specimens. HPV-31 was the second most common type detected in LSILs (22.2%) and HSILs (21.4%). HPV-45 was the third most common type detected in CC (11.5%). CONCLUSION The prevalence and genotypes distribution patterns of HR-HPV types among patients with CC and its precursors in Jordan are similar to known international patterns. The results of this study provide baseline information on the HPV type distribution, which may guide the development of CC prevention and control programs in Jordan.
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Affiliation(s)
- B Obeidat
- Department of Obstetrics and Gynecology, Jordan University of Science and Technology, Irbid, Jordan.
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16
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Jaradat ZW, Al Bzour A, Ababneh Q, Shdiefat S, Jaradat S, Al Domi H. Identification of allergenic pollen grains in 36 olive (Olea europaea) cultivars grown in Jordan. FOOD AGR IMMUNOL 2012. [DOI: 10.1080/09540105.2011.617357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022] Open
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17
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Brimicombe PD, Siemianowski SD, Jaradat S, Levine YK, Thompson P, Bras W, Gleeson HF. Time-resolved x-ray studies of the dynamics of smectic- A layer realignment by magnetic fields. Phys Rev E Stat Nonlin Soft Matter Phys 2009; 79:031706. [PMID: 19391961 DOI: 10.1103/physreve.79.031706] [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: 12/01/2008] [Revised: 02/09/2009] [Indexed: 05/27/2023]
Abstract
While the rotation of smectic layers under an applied field may at first appear to be a relatively simple problem, the dynamic processes involved are rather complex. An applied field produces a torque on the liquid crystal director, but has no direct influence on the smectic layers. If the director is reoriented significantly, however, the layers must also reorient in order to accommodate this (the layered structure is produced by short-range molecular interactions). Indeed, if the liquid crystalline order is not maintained during the realignment then matters become even more complex. In this paper we use time-resolved x-ray scattering to investigate the realignment of smectic- A layers in thin-film devices using a magnetic field. No evidence is found for continuous rotation of the smectic layers under any circumstances in such devices, a result that is not found when using bulk samples. No evidence indicating the formation of the nematic phase is observed during realignment. A molecular-dynamics technique is used to model the system which indicates that the sample becomes significantly disorganized during the realignment process when large angular rotations are induced.
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Affiliation(s)
- P D Brimicombe
- School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, United Kingdom
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18
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Osipov MA, Gorkunov MV, Gleeson HF, Jaradat S. Molecular models for ferroelectric liquid crystals with conventional and anomalously weak layer contraction. Eur Phys J E Soft Matter 2008; 26:395-404. [PMID: 19230116 DOI: 10.1140/epje/i2008-10339-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A molecular theory of the ferroelectric smectic C* phase has been developed using the simple model of a chiral molecule composed of a uniaxial core and a pair of off-center nonparallel dipoles which determine molecular chirality and polarity. The interaction between uniaxial cores is modeled by a rather general effective potential which can be used to describe smectic materials with both conventional and anomalously weak layer contraction in the smectic C* phase. Spontaneous polarization, tilt, and layer spacing are calculated numerically as functions of temperature, and it is shown that the variation of the polarization generally deviates from that of the tilt angle. It is shown that this deviation is more pronounced in smectic materials tilting with low layer contraction which corresponds to existing experimental data. The model has been used to reproduce qualitatively the experimental data for polarization, tilt and layer spacing for two similar mixtures exhibiting conventional and anomalously weak layer contraction. The polarization and the tilt are also calculated in the case when the smectic A-smectic C* transition is characterized by the biaxial primary order parameter.
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Affiliation(s)
- M A Osipov
- Department of Mathematics, University of Strathclyde, Glasgow G1 1XH, UK.
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19
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Jaradat S, Brimicombe PD, Southern C, Siemianowski SD, DiMasi E, Osipov M, Pindak R, Gleeson HF. Unexpected field-induced phase transitions between ferrielectric and antiferroelectric liquid crystal structures. Phys Rev E Stat Nonlin Soft Matter Phys 2008; 77:010701. [PMID: 18351811 DOI: 10.1103/physreve.77.010701] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2007] [Indexed: 05/26/2023]
Abstract
Liquid crystals are intriguing electrically responsive soft matter systems. We report previously unexplored field-induced changes in the structures of some frustrated liquid crystal phases and describe them theoretically. Specifically, we have discovered using resonant x-ray scattering that the four-layer intermediate smectic phase can undergo either a transition to the ferrielectric (three-layer) phase or to the ferroelectric phase, depending on temperature. Our studies of intermediate phases using electric fields offer a way to test theories that describe ferroelectricity in self-assembling fluids.
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Affiliation(s)
- S Jaradat
- School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
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Brimicombe PD, Roberts NW, Jaradat S, Southern C, Wang ST, Huang CC, Dimasi E, Pindak R, Gleeson HF. Deduction of the temperature-dependent structure of the four-layer intermediate smectic phase using resonant X-ray scattering. Eur Phys J E Soft Matter 2007; 23:281-7. [PMID: 17641818 DOI: 10.1140/epje/i2007-10189-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2007] [Accepted: 06/07/2007] [Indexed: 05/16/2023]
Abstract
A binary mixture of an antiferroelectric liquid-crystal material containing a selenium atom and a highly chiral dopant is investigated using resonant X-ray scattering. This mixture exhibits a remarkably wide four-layer intermediate smectic phase, the structure of which is investigated over a temperature range of 16K. Analysis of the resonant X-ray scattering data allows accurate measurement of both the helicoidal pitch and the distortion angle as a function of temperature. The former decreases rapidly as the SmC* phase is approached, whilst the latter remains constant over the temperature range studied at 8 degrees +/-3 degrees. We also observe that the senses of the helicoidal pitch and the unit cell of the repeating four-layer structure are opposite in this mixture and that there is no pitch inversion over the temperature range studied.
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Affiliation(s)
- P D Brimicombe
- School of Physics and Astronomy, University of Manchester, Manchester, UK
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21
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Gleeson HF, Roberts NW, Jaradat S, Wang ST, Lui ZQ, Huang CC, Bai J, Dimasi E, Pindak R. Elucidating the structure of liquid crystal phases using resonant X-ray scattering. Acta Crystallogr A 2006. [DOI: 10.1107/s0108767306098655] [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: 11/10/2022] Open
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Hüttemann M, Jaradat S, Grossman LI. Cytochrome c oxidase of mammals contains a testes-specific isoform of subunit VIb--the counterpart to testes-specific cytochrome c? Mol Reprod Dev 2003; 66:8-16. [PMID: 12874793 DOI: 10.1002/mrd.10327] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Sperm motility is highly dependent on aerobic energy metabolism, of which the apparent rate-limiting step of the mitochondrial respiratory chain is catalyzed by cytochrome c oxidase (COX). COX is the only electron transport chain complex to display isoforms, consistent with its suggested rate-limiting role. Isoforms were previously described for four of the 13 subunits. We now report the discovery that COX subunit VIb displays a testes-specific isoform in human, bull, rat, and mouse (COX VIb-2). Analysis of a variety of rat and mouse tissues, including ovaries, demonstrates exclusive expression of VIb-2 in testes, whereas VIb-1 transcripts are absent in rodent testes, even at early developmental stages. In contrast, both isoforms are transcribed in human testes. In situ hybridizations with human, rat, and mouse testes sections reveal VIb-2 transcripts in all testicular cell types. Within the seminiferous tubules, VIb-1 shows stronger signals in the periphery than in the lumen. Previously, cytochrome c was the only component of the mitochondrial respiratory chain known to express a testes-specific isoform in mammals. COX subunit VIb connects the two COX monomers into the physiological dimeric form, and is the only COX subunit that, like cytochrome c, is solely located in the inter-membrane space. Significant differences between the isoform sequences, in particular changes in charged amino acids, suggest interactions with cytochrome c and sperm-specific energy requirements.
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Affiliation(s)
- Maik Hüttemann
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan 48201, USA
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Talafih K, Hunaiti AA, Gharaibeh N, Gharaibeh M, Jaradat S. The prevalence of hemoglobin S and glucose-6-phosphate dehydrogenase deficiency in Jordanian newborn. J Obstet Gynaecol Res 1996; 22:417-20. [PMID: 8987321 DOI: 10.1111/j.1447-0756.1996.tb01050.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [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: 02/03/2023]
Abstract
OBJECTIVE The aim of this study was to determine the incidence of HbS and glucose-6-phosphate dehydrogenase (G6PD) deficiency in Jordanian newborn. STUDY DESIGN A total of 181 male and female babies born at Princess Basma Teaching Hospital, randomly selected, and cord blood samples were collected, and the erythrocyte G6PD activity was measured, and the hemoglobin electrophoresis for blood lysate was conducted and scanned for HbS scanning. RESULTS The frequencies of two major red cell genetic defects, sickle hemoglobin (HbS) and deficiency G6PD was determined, of the studied subjects 10 (11%) females and 11 (12%) males were found to be deficient in the G6PD gene. The frequency of HbS carriers among the females was 4% while it was 6% among males. The coincidence of both G6PD deficiency and sickle cell hemoglobin in the samples was 1%. No coincidence was found between G6PD deficiency and hyperbilirubinemia. CONCLUSION A better understanding of the distributions of these genetic disorders has the potential to aid in the more efficient utilization of health care resources and improved planning.
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Affiliation(s)
- K Talafih
- Department of Physiology and Biochemistry, Jordan University of Science and Technology, Irbid, Jordan
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