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Nazir I, Ur Rahman N, Alvi Z, Hafizur Rahman M, Sendker J, Zhang T, Frankish N, Sheridan H. Erratum: Antidiabetic Activities of an LC/MS Fingerprinted Aqueous Extract of Fagonia cretica L. in Preclinical Models. Planta Med 2017; 83:E3. [PMID: 28476067 DOI: 10.1055/s-0043-109620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- Imran Nazir
- Department of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
- Trinity College Dublin, School of Pharmacy & Pharmaceutical Sciences and Trinity Biosciences Institute (TBSI), Dublin, Ireland
| | - Nisar Ur Rahman
- Department of Pharmacy, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Zunaira Alvi
- Department of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - M Hafizur Rahman
- Dr. Panjwani Center for Molecular Medicine and Drug Research, University of Karachi, Karachi, Pakistan
| | - Jandirk Sendker
- University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Münster, Germany
| | - Tao Zhang
- Trinity College Dublin, School of Pharmacy & Pharmaceutical Sciences and Trinity Biosciences Institute (TBSI), Dublin, Ireland
| | - Neil Frankish
- Trinity College Dublin, School of Pharmacy & Pharmaceutical Sciences and Trinity Biosciences Institute (TBSI), Dublin, Ireland
| | - Helen Sheridan
- Trinity College Dublin, School of Pharmacy & Pharmaceutical Sciences and Trinity Biosciences Institute (TBSI), Dublin, Ireland
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Nazir I, Ur Rahman N, Alvi Z, Hafizur Rahman M, Sendker J, Zhang T, Frankish N, Sheridan H. Antidiabetic Activities of an LC/MS Fingerprinted Aqueous Extract of Fagonia cretica L. in Preclinical Models. Planta Med 2017; 83:1141-1148. [PMID: 28388787 DOI: 10.1055/s-0043-107616] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Diabetes mellitus is a chronic disease and one of the most important public health challenges facing mankind. Fagonia cretica is a medicinal plant used widely in the Punjab in Pakistan. A recent survey has demonstrated that traditional healers and herbalists frequently use this plant to treat diabetes. In the current study, the traditional medicine was prepared as a tea, and the profile of the main metabolites present in the traditional medicine was analysed via LC/MS/MS. The extract was shown to contain a number of phenolic glycosides including quercetin-3-O-rutinoside, kaempferol-3-O-rutinoside, kaempferol-3-O-glycoside, kaempferol-3(6'-malonylglucoside), isorhamnetin-3-O-rutinoside, and isorhamnetin 3-(6″-malonylglucoside) in addition to two unidentified sulphonated saponins. The traditional medicine inhibits α-glucosidase in vitro with an IC50 of 4.62 µg/mL. The hypoglycaemic effect of the traditional medicine was evaluated in normoglycaemic and streptozotocin-treated diabetic rats, using glibenclamide as an internal control. The preparation (250 or 500 mg/kg body weight) was administered once a day for 21 consecutive days. The dose of 500 mg/kg was effective in the management of the disease, causing a 45 % decrease in the plasma glucose level at the end of the experimental period. Histological analysis of pancreatic sections confirmed that streptozotocin/nictotinamide treatment caused destruction of pancreatic islet cells, while pancreatic sections from the treatment groups showed that both the extract and glibenclamide partially prevented this deterioration. The mechanism of this protective effect is unclear. However, such a finding suggests that ingestion of the tea could confer additional benefits and should be investigated further.
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Affiliation(s)
- Imran Nazir
- Department of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
- Trinity College Dublin, School of Pharmacy & Pharmaceutical Sciences and Trinity Biosciences Institute (TBSI), Dublin, Ireland
| | - Nisar Ur Rahman
- Department of Pharmacy, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Zunaira Alvi
- Department of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - M Hafizur Rahman
- Dr. Panjwani Center for Molecular Medicine and Drug Research, University of Karachi, Karachi, Pakistan
| | - Jandirk Sendker
- University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Münster, Germany
| | - Tao Zhang
- Trinity College Dublin, School of Pharmacy & Pharmaceutical Sciences and Trinity Biosciences Institute (TBSI), Dublin, Ireland
| | - Neil Frankish
- Trinity College Dublin, School of Pharmacy & Pharmaceutical Sciences and Trinity Biosciences Institute (TBSI), Dublin, Ireland
| | - Helen Sheridan
- Trinity College Dublin, School of Pharmacy & Pharmaceutical Sciences and Trinity Biosciences Institute (TBSI), Dublin, Ireland
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Naeem M, Ur Rahman N, Tavares GD, Barbosa SF, Chacra NB, Löbenberg R, Sarfraz MK. Physicochemical, in vitro and in vivo evaluation of flurbiprofen microemulsion. AN ACAD BRAS CIENC 2015; 87:1823-31. [PMID: 26375019 DOI: 10.1590/0001-3765201520130436] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Flurbiprofen, a potent nonsteroidal anti-inflammatory drug, is widely used for relief of pain in patients suffering from rheumatic diseases, migraine, sore throat and primary dysmenorrheal. However, this drug has many gastrointestinal side effects produced by its oral administration, such as gastric bleeding and peptic ulcer. These effects were responsible for non-compliance among patients, which ultimately results in treatment failure. The physicochemical properties of flurbiprofen, make it a suitable candidate for transdermal drug delivery, which can overcome the drawbacks of oral administration. In this sense, microemulsions have been proved to increase the cutaneous absorption of lipophilic drugs when compared to conventional drug delivery systems. The purpose of this study was to formulate and characterize gel based microemulsions, for topical delivery of flurbiprofen. Different gel bases, containing microemulsion and hydro-alcoholic solution of flurbiprofen, were developed and compared. In vitro study showed that gels containing microemulsion had a higher permeation rate than those containing hydro-alcoholic solutions. Additionally, formulation of Carbopol-I (microemulsion) showed higher percent of inhibition of inflammation than others bases. Further, skin irritation study demonstrated that Carbopol-I was none irritating. Flurbiprofen microemulsion incorporated on Carbopol-I showed physicochemical, in vitro and in vivo characteristics suitable for the development of alternative transdermal delivery formulation.
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Affiliation(s)
- Muhammad Naeem
- Department of Pharmacy, Faculty of Pharmacy and Alternative Medicine, Islamia University, Punjab, PK
| | - Nisar Ur Rahman
- Department of Pharmacy, Faculty of Pharmacy and Alternative Medicine, Islamia University, Punjab, PK
| | - Guilherme D Tavares
- Department of Biochemistry, Institute of Biology, State University of Campinas, Campinas, SP, BR
| | - Sávio F Barbosa
- Faculty of Pharmaceutical Sciences, Department of Pharmacy, University of Sao Paulo, São Paulo, SP, BR
| | - Nádia B Chacra
- Faculty of Pharmaceutical Sciences, Department of Pharmacy, University of Sao Paulo, São Paulo, SP, BR
| | - Raimar Löbenberg
- Faculty of Pharmacy and Pharmaceutical Sciences, Katz Group-Rexall Centre for Pharmacy and Health Research, University of Alberta, Edmonton, Alberta, CA
| | - Muhammad K Sarfraz
- Faculty of Pharmacy and Pharmaceutical Sciences, Katz Group-Rexall Centre for Pharmacy and Health Research, University of Alberta, Edmonton, Alberta, CA
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Idrees A, Rahman NU, Javaid Z, Kashif M, Aslam I, Abbas K, Hussain T. In vitro evaluation of transdermal patches of flurbiprofen with ethyl cellulose. Acta Pol Pharm 2014; 71:287-295. [PMID: 25272649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study was aimed to determine effects of penetration enhancers and plasticizers on drug release from rationally designed formulations of flurbiprofen based transdermal drug delivery system. Matrix type transdermal patches were formulated with ethyl cellulose (EC) as a polymer by using plate casting method. The plasticizers such as propylene glycol (PG) and dibutyl phthalate (DBP), and enhancers such as Span 20, Tween 20, sodium lauryl sulfate (SLS), isopropyl myristate (IPM) and ethanol (EtOH) were formulated in different concentrations in the patches. Such different combinations of polymer with various enhancers and plasticizers in patches were evaluated for their effect on the physicochemical properties and drug release behavior of flurbiprofen. The drug release study was carried out by the paddle-over-disk method and permeation of drug was performed by Franz diffusion cell using rabbit skin. Patches having ethanol with ethyl cellulose showed more uniformity in the physical properties while the smoothness and clarity of patches containing sodium lauryl sulfate were not satisfactory. The drug release from patches followed Higuchi and Korsmeyer-Pappas model while maximum drug release was obtained by isopropyl myristate (903 microg). It was concluded that the patches having ethyl cellulose with isopropyl myristate and propylene glycol are more useful for transdermal patches of flurbiprofen.
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Jamjoom AB, Khalaf NF, Mohammed AA, Jamjoom ZA, Kashoggi TY, Abdelbasit OB, Rahman NU. Factors affecting the outcome of foetal hydrocephaly. Acta Neurochir (Wien) 1998; 140:1121-5. [PMID: 9870056 DOI: 10.1007/s007010050225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 11/28/2022]
Abstract
In this study, the authors attempt to provide an account of the factors that affect the outcome of hydrocephaly in 26 foetuses. The hydrocephalus was related to a myelomeningocele in 35% of patients. Sixty-two percent of foetuses showed intra-uterine progression of their hydrocephalus and 50% were shunted postnatally. At a mean follow up of 2 years, the outcome was considered "fair" in 54% of patients. Our findings demonstrate that in foetal hydrocephaly a more favourable outcome is expected in patients with hydrocephalus which does not progress in utero, in whom the labour is not induced before 36 weeks of gestation, who are delivered vaginally weighing more than 2.5 kg and have a head circumference below the 95th centile and a CT cortical mantle thickness of 2 cm and more and who are treated by CSF shunting. The diagnosis of the foetal hydrocephaly at or before 28 weeks of gestation and the presence of a myelomeningocele did not affect the outcome significantly. Neurosurgeons are reminded to keep an open mind for infants with foetal hydrocephaly and to offer active treatment to patients with a potentially favourable outcome.
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Affiliation(s)
- A B Jamjoom
- Division of Neurosurgery, Security Forces Hospital, Riyadh, Saudi Arabia
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Abstract
Two cases of orbito-cranial injury caused by foreign bodies (FBs) penetrating the lateral wall and roof of the orbit are described. In the first patient, a long rusted nail acted as a missile and was only detected by X-rays and CT scan. The nail penetrated the orbit, the eyeball, the lateral orbital wall, and the temporal lobe of the brain. Lodged partly in the orbit and partly in the brain, this nail caused leakage of cerebrospinal fluid (CSF) through eye and led to orbital cellulitis and localized meningitis. The foreign body (FB) was removed through an extradural pterional approach with rapid resolution of orbital cellulitis and meningitis. In the second patient, large metallic FB, having penetrated the orbital roof was lodged intracranially above the chiasma. This was removed via frontal craniotomy. Mechanism of such injuries and appropriate surgical approaches are described as well.
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Affiliation(s)
- N U Rahman
- Division of Neurosurgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia
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Rahman NU, Jamjoom A, Jamjoom ZA. Unruptured posterior communicating artery aneurysm masquerading as migraine: report of two cases. J PAK MED ASSOC 1997; 47:172-4. [PMID: 9301172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- N U Rahman
- Division of Neurosurgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia
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Rahman NU, Jamjoom A, Jamjoom ZA. Acute spontaneous spinal epidural hematoma--a life-threatening emergency. J PAK MED ASSOC 1997; 47:148-50. [PMID: 9230584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- N U Rahman
- Division of Neurosurgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia
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Zabalgoitia M, Rahman NU, Haley WE, Oneschuk L, Yarows S, Yunis C, Lucas C, Linn W, Krause L, Amerena J. Disparity between diastolic mitral flow characteristics and left ventricular mass in essential hypertension. Am J Cardiol 1997; 79:1255-8. [PMID: 9164898 DOI: 10.1016/s0002-9149(97)00094-5] [Citation(s) in RCA: 8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Because left ventricular (LV) hypertrophy and aging have been associated with abnormal LV relaxation, this study evaluated the impact of LV mass on the filling patterns derived by Doppler in a large population aged > or =50 years. Results suggest that in essential hypertension the intrinsic myocardial composition is more important than cardiac hypertrophy in determining LV diastolic properties. This apparent discrepancy between LV mass and diastolic filling patterns highlights the difficulty in establishing the diagnosis of diastolic dysfunction in elderly hypertensives.
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Affiliation(s)
- M Zabalgoitia
- University of Texas Health Science Center at San Antonio, 78284-7872, USA
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Rockman HA, Choi DJ, Rahman NU, Akhter SA, Lefkowitz RJ, Koch WJ. Receptor-specific in vivo desensitization by the G protein-coupled receptor kinase-5 in transgenic mice. Proc Natl Acad Sci U S A 1996; 93:9954-9. [PMID: 8790438 PMCID: PMC38536 DOI: 10.1073/pnas.93.18.9954] [Citation(s) in RCA: 178] [Impact Index Per Article: 6.4] [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: 02/02/2023] Open
Abstract
Transgenic mice were generated with cardiac-specific overexpression of the G protein-coupled receptor kinase-5 (GRK5), a serine/threonine kinase most abundantly expressed in the heart compared with other tissues. Animals overexpressing GRK5 showed marked beta-adrenergic receptor desensitization in both the anesthetized and conscious state compared with nontransgenic control mice, while the contractile response to angiotensin II receptor stimulation was unchanged. In contrast, the angiotensin II-induced rise in contractility was significantly attenuated in transgenic mice overexpressing the beta-adrenergic receptor kinase-1, another member of the GRK family. These data suggest that myocardial overexpression of GRK5 results in selective uncoupling of G protein-coupled receptors and demonstrate that receptor specificity of the GRKs may be important in determining the physiological phenotype.
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Affiliation(s)
- H A Rockman
- Department of Medicine, University of California San Diego School of Medicine, La Jolla 92093, USA
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Jamjoom ZA, Abdul-Aziz S, Jamjoom AH, Rahman NU, Abdul-Jabbar M. Subtentorial diverticulum of the third ventricle associated with a mural cavernous angioma in a child. Surg Neurol 1994; 42:211-7. [PMID: 7940106 DOI: 10.1016/0090-3019(94)90264-x] [Citation(s) in RCA: 5] [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] [Indexed: 01/28/2023]
Abstract
The authors describe a case of a large subtentorial supracollicular diverticulum of the third ventricle associated with a cavernous angioma in its wall in a 6-year-old girl who presented with developmental delay and obstructive hydrocephalus. This is the first case in which such association has been diagnosed and successfully treated. The literature is reviewed, and the possible relationship between these two rare lesions is discussed.
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Affiliation(s)
- Z A Jamjoom
- Division of Neurosurgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia
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Enani MA, Harakati MS, Almohareb FI, Rahman NU, Fawzy EM. Brain granulocytic sarcoma at the site of previous cerebral hemorrhage in a patient with acute myelogenous leukemia. Int J Hematol 1993; 58:119-23. [PMID: 8219108] [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: 01/29/2023]
Abstract
An unusual case of granulocytic sarcoma developing at the site of a previous cerebral hemorrhage in a patient with acute myelogenous leukemia in complete hematological remission is presented. The pathogenesis of the tumor growth at this site and its relevance to the antecedent hemorrhage are discussed.
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Affiliation(s)
- M A Enani
- Department of Medicine, College of Medicine, King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia
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Abstract
BACKGROUND Massive bilateral infarcts due to deep venous system thrombosis are extremely rare and poorly documented. We present a case with computed tomographic evidence of both thrombosis and infarction of the whole deep venous system. CASE DESCRIPTION A previously healthy 30-year-old woman who had taken oral contraceptives for 3 years complained of recurrent headaches and transient visual obscuration. Three months later, she suddenly became comatose and was found to have papilledema. She rapidly worsened, became decerebrate, and died within 48 hours. Noncontrast computed tomographic scan showed the spontaneous hyperdensity of the thrombosed deep veins and a massive bilateral centrobasilar hypodensity suggestive of a deep venous system infarction. CONCLUSIONS This case shows that cerebral venous thrombosis can masquerade during 3 months as benign intracranial hypertension and then make a dramatic extension to the deep cerebral veins. It illustrates extensive thrombosis of the deep venous system as a possible cause of rapid coma and decerebration and stresses the importance of computed tomographic scan to show both the thrombosed veins and the venous infarct, which allows delineation of the deep venous system territory.
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Affiliation(s)
- N U Rahman
- Department of Neurosurgery, King Saud University, Riyadh, Saudi Arabia
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Kolawole TM, Hawass ND, Shaheen MA, Badr AH, Rahman NU. Lumbosacral plexus avulsion injury: clinical, myelographic and computerized tomographic features. J Trauma 1988; 28:861-5. [PMID: 3385835] [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: 01/05/2023]
Abstract
A rare case of lumbosacral plexus avulsion studied with computerized tomography (CT) in a 5-year old Saudi involved in a vehicular accident with resultant left lower limb monoparesis is presented. Myelography and CT were superior to electromyographic findings in this case. Such cases should be closely followed and surgical exploration and decompression offered if any evidence of cauda equina compression develops.
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Affiliation(s)
- T M Kolawole
- Department of Radiology, King Khalid University Hospital, King Saud University College of Medicine, Riyadh, Saudi Arabia
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Abstract
Results are described of 86 intracranial operations for the repair of nasal encephalocoele children at the Lahore Neurosurgical Centre in the last 13 years. These midline lesions at the base of the anterior cranial fossa have been considered in the past to be inoperable and even when operable, unpleasantly difficult. The intracranial approach has made it possible to treat this condition satisfactorily with comparatively few complications. Attempts at extra-cranial repair have met little success as they do not take into account the basic embryology and anatomy of the condition and fail to tackle the sac at the patent foramen caecum, the neck of the sac. This paper describes the embryology, anatomy, basic pathology and clinical features of the condition with characteristic X-rays showing the patent foramen caecum and outlines the operative repair.
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