1
|
Zaghloul M, Rehman H, Sansone S, Argyriou K, Parra-Blanco A. Endoscopic treatment of scarred polyps with a non-thermal device (Endorotor): A review of the literature. World J Gastroenterol 2024; 30:1706-1713. [PMID: 38617738 PMCID: PMC11008378 DOI: 10.3748/wjg.v30.i12.1706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 01/22/2024] [Accepted: 03/15/2024] [Indexed: 03/28/2024] Open
Abstract
Endoscopic resection (ER) of colorectal polyps has become a daily practice in most endoscopic units providing a colorectal cancer screening program and requires the availability of local experts and high-end endoscopic devices. ER procedures have evolved over the past few years from endoscopic mucosal resection (EMR) to more advanced techniques, such as endoscopic submucosal dissection and endo-scopic full-thickness resection. Complete resection and disease eradication are the ultimate goals of ER-based techniques, and novel devices have been developed to achieve these goals. The EndoRotor® Endoscopic Powered Resection System (Interscope Medical, Inc., Northbridge, Massachusetts, United States) is one such device. The EndoRotor is a powered resection tool for the removal of alimentary tract mucosa, including post-EMR persistent lesions with scarring, and has both CE Mark and FDA clearance. This review covers available published evidence documenting the usefulness of EndoRotor for the management of recurrent colorectal polyps.
Collapse
Affiliation(s)
- Mariam Zaghloul
- Department of Hepatology, Gastroenterology and Infectious Diseases, Kafrelsheikh Universit, Kafr-Elshikh 33516, Egypt
| | - Hameed Rehman
- Department of Gastroenterology Service, Nottingham City Hospital Campus, Nottingham University Hospitals NHS Trust, Nottingham NG5 1PB, United Kingdom
| | - Stefano Sansone
- Department of Gastroenterology Service, Nottingham City Hospital Campus, Nottingham University Hospitals NHS Trust, Nottingham NG5 1PB, United Kingdom
| | - Konstantinos Argyriou
- Department of Gastroenterology, University Hospital of Larissa, Larissa 41334, Greece
| | - Adolfo Parra-Blanco
- Department of Gastroenterology Service, Nottingham City Hospital Campus, Nottingham University Hospitals NHS Trust, Nottingham NG5 1PB, United Kingdom
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and University of Nottingham, Nottingham NG72UH, United Kingdom
| |
Collapse
|
2
|
Rehman H, Rehman ST, Zulfiqar S, Awan S, Abid S. Real-world comparison of terlipressin vs. octreotide as an adjuvant treatment in the management of variceal bleeding. Sci Rep 2024; 14:6692. [PMID: 38509184 PMCID: PMC10954665 DOI: 10.1038/s41598-024-56873-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 03/12/2024] [Indexed: 03/22/2024] Open
Abstract
Variceal bleeding is a major complication and the leading cause of death in patients with cirrhosis and portal hypertension. This study aims to compare the efficacy and safety of terlipressin vs octreotide as an adjuvant to endoscopic management of patients with esophageal variceal bleeding in a real-time scenario. We reviewed the medical records of patients with esophageal variceal bleeding from January 2005 to December 2020 at our tertiary care Aga Khan University Hospital. Mortality was assessed after 6 weeks. A total of 842 patients with variceal bleed were evaluated. 624 patients (74.1%) and 218 patients (25.9%) received Terlipressin and Octreotide respectively. On multiple regression analysis, cardiac events during hospital stay (OR: 11.22), presence of Porto-systemic encephalopathy (OR: 3.79), and elevated bilirubin levels at the time of presentation were found to be independent risk factors for increased six weeks mortality. Moreover, cardiac events during hospital stay (OR: 3.26), Porto-systemic encephalopathy at presentation (OR: 3.06), and octreotide administration (OR: 1.80) were identified as independent risk factors for increased length of hospital stay. Terlipressin and Octreotide have similar outcomes in terms of control of bleeding, hospital stay, mortality, and side effects when used as adjuvant therapy for the management of variceal bleeding.
Collapse
Affiliation(s)
- H Rehman
- Section of Gastroenterology, Department of Medicine, Aga Khan University, National Stadium Road, P.O Box 3500, Karachi, Pakistan
| | - S T Rehman
- Section of Gastroenterology, Department of Medicine, Aga Khan University, National Stadium Road, P.O Box 3500, Karachi, Pakistan
| | - S Zulfiqar
- Section of Gastroenterology, Department of Medicine, Aga Khan University, National Stadium Road, P.O Box 3500, Karachi, Pakistan
| | - S Awan
- Section of Gastroenterology, Department of Medicine, Aga Khan University, National Stadium Road, P.O Box 3500, Karachi, Pakistan
| | - Shahab Abid
- Section of Gastroenterology, Department of Medicine, Aga Khan University, National Stadium Road, P.O Box 3500, Karachi, Pakistan.
| |
Collapse
|
3
|
Rehman H, Sansone S, Parra-Blanco A. The use of an overtube device to assist in advanced therapeutic procedures in patients with a colostomy. Endoscopy 2023; 55:E1211-E1212. [PMID: 37992739 PMCID: PMC10665117 DOI: 10.1055/a-2194-4529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Affiliation(s)
- Hameed Rehman
- Nottingham University Hospitals Trust, Nottingham, UK
| | | | - Adolfo Parra-Blanco
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust, Nottingham UK
| |
Collapse
|
4
|
Lim JW, Lindsay E, Rehman H, Tong EYH, Ammen bin Badekrizaman M, Withall A, Dalgleish S, Mitchell M, Boddie D. 941 The Effect of COVID-19 on Orthopaedic Trauma Theatre Efficiency and Surgical Training in the North and East of Scotland Major Trauma Centres – a Year On. Br J Surg 2022. [DOI: 10.1093/bjs/znac269.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Aim
To determine the orthopaedic trauma theatre efficiency in two large major trauma centres (MTCs) in Scotland before and after the outbreak of Coronavirus disease (COVID-19) pandemic.
Method
All trauma patients presented to the North and East of Scotland's MTCs prior to the outbreak of COVID-19 (7th May to 7th June 2019), during the first peak of COVID-19 (7th May to 7th June 2020), after Aerosol Generating Procedures updates (7th November to 7th December 2020) and the ‘new normal’ (7th May to 7th June 2021) were retrospectively reviewed. Training opportunities and theatre time were compared. The Kruskall-Wallis test was used.
Results
There were no significant differences in the length of hospital stay (p=0.117, 0.065) and time from injuries and surgery within groups in both MTCs (p=0.508, 0.384). The pandemic has negatively affected the anaesthetic and surgical preparation time, time between end of procedure and send for next case, and turnover time, with more profound effect on the North of Scotland's MTC. The trainee's involvement as main surgeon had decreased with the outbreak of the pandemic, with the junior trainees being affected most severely in North of Scotland. The time taken for patient to arrive to theatre after sending and total downtime were twice as long in the North of Scotland.
Conclusion
The COVID-19 pandemic has negatively impacted the orthopaedic trauma theatre efficiency and training opportunities. Actions should be taken to improve the turnover time to maximise theatre efficiency while prioritizing training opportunities.
Collapse
Affiliation(s)
- JW Lim
- Aberdeen Royal Infirmary , Aberdeen , United Kingdom
| | - E Lindsay
- Ninewells Hospital and Medical School , Dundee , United Kingdom
| | - H Rehman
- Warrington Hospital , Warrington , United Kingdom
| | - EYH Tong
- University of Aberdeen , Aberdeen , United Kingdom
| | | | - A Withall
- Ninewells Hospital and Medical School , Dundee , United Kingdom
| | - S Dalgleish
- Ninewells Hospital and Medical School , Dundee , United Kingdom
| | - M Mitchell
- Aberdeen Royal Infirmary , Aberdeen , United Kingdom
| | - D Boddie
- Aberdeen Royal Infirmary , Aberdeen , United Kingdom
| |
Collapse
|
5
|
Lim JW, Rehman H. 947 COVID19 and Its Impact on the North and East of Scotland Orthopaedic Trainees. Br J Surg 2022. [DOI: 10.1093/bjs/znac269.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Abstract
Aim
We conducted a trainee survey at the first peak of the pandemic to investigate the impact of COVID-19 on the North of Scotland (NoS) and East of Scotland (EoS) orthopaedic trainees.
Method
An online survey was distributed to all NoS and EoS orthopaedic trainees. All data collection was anonymous.
Results
Across both Scottish deaneries, 28 trainees had responded: 39% from EoS and 61% from NoS. Trainees at all stages of training responded to the survey, with the most responses received from specialist trainees in third year of training (ST3) (25%). In response to the pandemic, 18% of trainees had been redeployed and they were from NoS. Since the reconfiguration of service, 18% of trainees had done >20 operations in a month and they were senior trainees. If COVID-19 outbreak is likely going to reduce operating opportunities for a long period, only 36% of trainees would be open to the idea of making standard surgical specialty training longer whereas 57% of trainees would be open to longer working hours to achieve certification in Trauma and Orthopaedic surgery within 96 months.
Conclusion
The outbreak of COVID-19 has impacted both deaneries orthopaedic training and urgent restoration of surgical training is essential for individual trainees. Changes in working practices necessitated by COVID-19 have known to impact theatre efficiency. Actions should be taken to improve the theatre efficiency while prioritizing training opportunities.
Collapse
Affiliation(s)
- JW Lim
- Aberdeen Royal Infirmary , Aberdeen , United Kingdom
| | - H Rehman
- Warrington Hospital , Warrington , United Kingdom
| |
Collapse
|
6
|
Sadiq F, Shafi S, Khan M, Ain Q, Khan I, Rehman H, Šikonja J, Mlinarič M, Gidding S, Groselj U. Mapping of familial hypercholesterolemia basic infrastructure in Pakistan. Atherosclerosis 2022. [DOI: 10.1016/j.atherosclerosis.2022.06.513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
7
|
|
8
|
Sohail MA, Rashid MA, Habib HF, Malik MI, Yousaf MS, Rehman H. Effects of physical form and wheat straw level in the diet on growth performance, nutrient digestibility, rumen papillae morphometry, and carcass characteristics in Lohi lambs. Anim Prod Sci 2022. [DOI: 10.1071/an21559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
9
|
Rehman H, Chandra N, Jammalamadaka SR. Competing risks survival data under middle censoring-An application to COVID-19 pandemic. Healthc Anal (N Y) 2021; 1:100006. [PMID: 38620911 PMCID: PMC8479409 DOI: 10.1016/j.health.2021.100006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/16/2021] [Accepted: 09/24/2021] [Indexed: 11/23/2022]
Abstract
Survival data is being analysed here under the middle censoring scheme, using specifically quantile function modelling under competing risks. The use of middle censoring scheme has been shown to be very appropriate under the COVID-19 pandemic scenario. Cause-specific quantile inference under middle censoring is employed. Such quantile inferences are obtained through cumulative incidence function based on cause-specific proportional hazards model. The baseline lifetime is assumed to follow a very general parametric model namely the Weibull distribution, and is independent of the censoring mechanism. We obtain estimates of the unknown parameters and cause specific quantile functions under classical as well as a Bayesian set-up. A Monte Carlo simulation study assesses the relative performance of the different estimators. Finally, a real life data analysis is given for illustration of the proposed methods.
Collapse
Affiliation(s)
- H Rehman
- Department of Statistics, Ramanujan School of Mathematical Sciences, Pondicherry University, Puducherry 605 014, India
| | - N Chandra
- Department of Statistics, Ramanujan School of Mathematical Sciences, Pondicherry University, Puducherry 605 014, India
| | - S Rao Jammalamadaka
- Department of Statistics and Applied Probability, University of California, Santa Barbara, CA, USA
| |
Collapse
|
10
|
Yasmin S, Yousaf M, Majeed K, Rashid M, Tahir S, Numan M, Mustafa R, Nagra S, Zaneb H, Rehman H. Dietary Catharanthus roseus modulates intestinal microarchitecture in broilers. S AFR J ANIM SCI 2021. [DOI: 10.4314/sajas.v51i4.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The study evaluated the efficacy of ethanolic extracts of Catharanthus roseus (C. roseus) in altering growth performance, viscera development and intestinal microarchitecture in broilers. Day-old broiler chicks (n = 175) were randomly divided into seven groups (n = 25/group) with 5 replicates (n = 5). The chicks in the control groups were fed a corn-soya-based basal diet, whereas groups 2 - 4 had the same basal diets supplemented with 0.05%, 0.1%, and 0.2% ethanolic leaf extracts (ELE), respectively. Chicks in groups 5 - 7 were fed the basal diet supplemented with 0.05%, 0.1%, and 0.2% ethanolic root extracts (ERE) of C. roseus, respectively. The growth performance and feed conversion ratio remained unchanged, but feed consumption of birds supplemented with 0.1% ERE increased in weeks 1 and 3. The relative length of the small intestine was lower in the 0.05% ERE group compared with the control. Villus height, width, surface area, and lamina propria thickness were higher in the 0.1% ERE group in all three segments of the small intestine than in the control. Broilers supplemented with 0.1% ERE performed better in terms of feed consumption and improved intestinal microarchitecture of the small intestine.
Collapse
|
11
|
Lim JW, Rehman H, Gaba S, Sargeant H, Stevenson IM, Boddie DE. Orthopaedic assessment unit: a service model for the delivery of orthopaedic trauma care in a major trauma centre during the global pandemic (COVID-19). Ann R Coll Surg Engl 2021; 103:167-172. [PMID: 33645286 DOI: 10.1308/rcsann.2020.7069] [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: 11/22/2022] Open
Abstract
INTRODUCTION We describe a new service model, the Orthopaedic Assessment Unit (OAU), designed to provide care for trauma patients during the COVID-19 pandemic. Patients without COVID-19 symptoms and isolated musculoskeletal injuries were redirected to the OAU. METHODS We prospectively reviewed patients throughput during the peak of the global pandemic (7 May 2020 to 7 June 2020) and compared with our historic service provision (7 May 2019 to 7 June 2019). The Mann-Whitney and Fisher Exact tests were used to test the statistical significance of data. RESULTS A total of 1,147 patients were seen, with peak attendances between 11am and 2pm; 96% of all referrals were seen within 4h. The majority of patients were seen by orthopaedic registrars (52%) and nurse practitioners (44%). The majority of patients suffered from sprains and strains (39%), followed by fractures (22%) and wounds (20%); 73% of patients were discharged on the same day, 15% given follow up, 8% underwent surgery and 3% were admitted but did not undergo surgery. Our volume of trauma admissions and theatre cases decreased by 22% and 17%, respectively (p=0.058; 0.139). There was a significant reduction of virtual fracture clinic referrals after reconfiguration of services (p<0.001). CONCLUSIONS Rapid implementation of a specialist OAU during a pandemic can provide early definitive trauma care while exceeding national waiting time standards. The fall in trauma attendances was lower than anticipated. The retention of orthopaedic staff in the department to staff the unit and maintain a high standard of care is imperative.
Collapse
Affiliation(s)
- J W Lim
- Aberdeen Royal Infirmary, Aberdeen, UK
| | - H Rehman
- Aberdeen Royal Infirmary, Aberdeen, UK
| | - S Gaba
- Aberdeen Royal Infirmary, Aberdeen, UK
| | | | | | | |
Collapse
|
12
|
Rehman H, Stevenson I. Pneumatic high-speed burr as an adjunct to femoral preparation for fixation of bisphosphonate related fractures. Ann R Coll Surg Engl 2021; 103:1. [PMID: 33682432 DOI: 10.1308/rcsann.2020.7051] [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: 11/22/2022] Open
Affiliation(s)
- H Rehman
- Aberdeen Royal Infirmary, Aberdeen, UK
| | | |
Collapse
|
13
|
Rehman H, Chandra N, Hosseini-Baharanchi FS, Baghestani AR, Pourhoseingholi MA. Cause-specific hazard regression estimation for modified Weibull distribution under a class of non-informative priors. J Appl Stat 2021; 49:1784-1801. [DOI: 10.1080/02664763.2021.1882407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Rehman
- Department of Statistics, Ramanujan School of Mathematical Sciences, Pondicherry University, Puducherry, India
| | - N. Chandra
- Department of Statistics, Ramanujan School of Mathematical Sciences, Pondicherry University, Puducherry, India
| | - Fatemeh Sadat Hosseini-Baharanchi
- Minimally Invasive Surgery Research Center and Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Ahmad Reza Baghestani
- Physiotherapy Research Center and Department of Biostatistics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohamad Amin Pourhoseingholi
- Gastroenterology and Liver Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
14
|
Abbas S, Yousaf M, Ahmad I, Rehman H, Mahmood A, Ashraf S, Blouch R, Shahzad A, Nak Y, Nak D. Evaluation of serum analytes in pregnant and non-pregnant dairy cows as indicators of pregnancy. S AFR J ANIM SCI 2021. [DOI: 10.4314/sajas.v50i5.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study was conducted to reveal the dynamics of haematological indicators in pregnant and non-pregnant dairy cows. Sixty multiparous healthy dairy cows were divided into four groups based on the length of time they had been pregnant, namely first, second and third trimesters, and non-pregnant (n=15 each). Blood was collected from each animal, and serum was harvested and stored at -20 °C for biochemical profiling. Concentrations of serum total oxidants (TOC), ceruloplasmin oxidase (CpO) and triiodothyronine (T3) were higher (P <0.05) during the third trimester compared with non-pregnant cows. Serum arylesterase (Ary) concentration was lower (P <0.05) during the second and the third trimesters compared with the non-pregnant cows. The concentration of serum total homocysteine (tHcy) was higher (P <0.05) the third trimester compared with the first and the second trimesters. The concentrations of serum total antioxidants (TAC), paraoxonase 1 (PON1), thyroxine (T4), aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were not different in the pregnant and the non-pregnant cows. Thus, TOC, Ary, CpO, tHcy and T3 could be taken as biological markers to assess the progression of pregnancy and to develop management tools to improve health status during late gestation in dairy cows
Keywords: ceruloplasmin, hepatic enzymes, late gestation, triiodothyronine
Collapse
|
15
|
Rehman H, Ali Z, Qadir A, H. Farooq M, Shuaib A, Zahra A, Shahzady T, Hussain H. Synthesis of CuO-NPS by simple wet chemical method using various dicarboxylic acid salts as precursors: Spectral characterization and in-vitro biological evaluation. B CHEM SOC ETHIOPIA 2020. [DOI: 10.4314/bcse.v34i2.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this study, a simple chemical reduction method was employed to synthesize CuO-NPs. Various dicarboxylic acids were converted into Cu(II) salt of dicarboxylic acid which were used as precursors. NPs were produced by reducing precursors with NaBH4. Characteristics of synthesized NPs were investigated by using important analytical techniques including Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), thermo gravimetric analysis (TGA) and scanning electron microscopy (SEM). Developed NPs were investigated for their antibacterial activity against a range of bacterial strains by employing agar well diffusion method. CuO-NPs exhibited good to moderate activity against E-Coli, B. Subtilis and poor activity against K. pneumonia and Methicillin-resistant Staphylococcus aureus (MRSA). It was found that amongst all experienced compounds sample 2 showed good activity with minimum inhibition concentration (MIC) 10 µg/mL (zone of inhibition: 22± 0.12 mm) while sample 3 showed poor activity with MIC 40 µg/mL (zone of inhibition: 8.0 ± 0.18 mm).
KEY WORDS: CuO-NPs, Dicarboxylic acids, Sodium borohydride, Antibacterial study
Bull. Chem. Soc. Ethiop. 2020, 34(2), 323-334
DOI: https://dx.doi.org/10.4314/bcse.v34i2.10
Collapse
|
16
|
Gardner WT, Rehman H, Frost A. Spinal epidural abscesses - The role for non-operative management: A systematic review. Surgeon 2020; 19:226-237. [PMID: 32684428 DOI: 10.1016/j.surge.2020.06.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 06/13/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Spinal Epidural Abscesses (SEAs) are traditionally seen as a surgical emergency. However, SEAs can be discovered in entirely asymptomatic patients. This presents a dilemma for the attending clinician as to whether to subject these patients to significant surgery. This systematic review updates the evidence surrounding the efficacy of non-operative SEA management by means of intravenous antibiotics ± radiologically-guided aspiration. AIMS 1. To assess failure rates of medical therapy for SEA. The absolute definition of 'failure' used by the study was recorded, and comparisons made. 2. To review of risk factors for success/failure of medical treatment for SEA. METHODS A database search with the MESH term 'epidural abscess' and keywords ['treatment' OR 'management'] were used. RESULTS 14 studies were included. The number of SEA patients managed non-operatively ranged from 19 to 142. There was significant heterogeneity across the studies. Pooled Failure of Medical Therapy (FMT) (defined as any poor outcome) was 29.40%. When FMT = mortality the pooled rate was 11.49%. Commonly cited risk factors for FMT included acute neurological compromise, diabetes mellitus, increasing age and Staphylococcus aureus. CONCLUSION SEA will always be a condition mostly managed surgically. Despite this, there is growing evidence that non-operative management can be possible in the correct patients. The key is in patient selection - patients with any of the above-mentioned risk factors have the potential to deteriorate further on medical treatment and have a worse outcome than if they had undergone emergency surgery straight away. Ongoing research will hopefully further investigate this crucial step.
Collapse
Affiliation(s)
- W T Gardner
- Department of Trauma & Orthopaedics, Aberdeen Royal Infirmary, Foresterhill, Aberdeen, UK.
| | - H Rehman
- Department of Trauma & Orthopaedics, Aberdeen Royal Infirmary, Foresterhill, Aberdeen, UK
| | - A Frost
- Department of Trauma & Orthopaedics, Aberdeen Royal Infirmary, Foresterhill, Aberdeen, UK
| |
Collapse
|
17
|
Abbas S, Rashid M, Yousaf M, Ashraf S, Rabbani I, Zaneb H, Tahir S, Shahzad A, Rehman H. Effect of maternal yeast feeding on dam performance and serum health biomarkers of Beetal goat kids. S AFR J ANIM SCI 2020. [DOI: 10.4314/sajas.v50i2.11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Supplementation with dietary yeast has improved digestibility and productive performance in ruminants. In this research the primary objective was to appraise the effects of dietary yeast supplementation of female goats during the transition period on milk composition and yield and on production and serum health biomarkers of their kids. Twenty-four Beetal goats (4 ± 1.2 years) were randomly assigned to three groups, which received 0, 5, and 10 grams/animal/day of live dried yeast Saccharomyces cerevisiae for 60 days (30 days pre- and post-partum). All goats were fed 500 grams of concentrate with water and green fodder ad libitum. Milk samples were collected at 7, 14, 21, and 28 days post kidding. Kids were weighed on days 0, 7, 15, 22, and 30, and blood samples were collected on days 15 and 30 for serum metabolites (glucose, urea, cholesterol, non-esterified fatty acids (NEFA), serum total proteins, albumin, globulin, albumin to globulin ratio, serum oxidant and antioxidant activity (malondialdehyde) (MDA) and catalase), and liver enzymes aspartate aminotransferase (AST) and alanine transaminase (ALT) assessment. Milk yield was significantly (P =0.02) higher during the post-partum period in yeast-fed goats. Yeast-fed goats also produced milk containing more fat (P <0.001) and protein (P <0.001) compared with control goats. Birth weight, average daily gain, and serum health biomarkers of the kids were not influenced by the treatments. In conclusion, dietary yeast supplementation resulted in increased production performance of the dams without significant impact on their offspring.Keywords: average daily gain, catalase activity, hepatic enzymes, milk production, Saccharomyces cerevisiae, transition period
Collapse
|
18
|
Rehman H, Jahan S, Ullah I, Thörnqvist PO, Jabbar M, Shoaib M, Aman F, John N. Effects of endocrine disruptor furan on reproductive physiology of Sprague Dawley rats: An F1 Extended One-Generation Reproductive Toxicity Study (EOGRTS). Hum Exp Toxicol 2020; 39:1079-1094. [PMID: 32174189 DOI: 10.1177/0960327120911416] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The present study investigated the reproductive toxicity of furan in an Extended One-Generation Reproductive Toxicity Study in rats. Sprague Dawley F0 weaning rats (30 per sex per group) were exposed to furan orally at 0, 1, 2.5, 5, and 10 mg kg-1 for 10 weeks (males) and 2 weeks (females) and then mated. Results of F0 indicated that in the furan-treated groups (5 mg kg-1 and 10 mg kg-1), body weight (bw) gain decreased during prebreed and gestational period while increased during lactation periods. F0 animals prebreeding exposure resulted in head tilt and foot splay at 10 mg kg-1. Number of live pups at birth were decreased (p < 0.001) at 10 mg kg-1. At postnatal day (PND) 70, a significant (p = 0.03) decrease in testosterone levels of male rats and estrogen levels of female rats (p = 0.05) was observed in 10 mg kg-1 furan-treated group in F1 generation. Luteinizing hormone, follicle-stimulating hormone, and progesterone levels were also reduced, but their reduction was not statistically significant in all groups. In higher dose furan group (10 mg kg-1), testicular and ovarian weights were reduced in F1 generation at PND 70, with decreased daily sperm production (p = 0.01) and disturbed estrous cyclicity (p < 0.01). Some histopathological changes were also observed in testis and ovaries in groups whose parents were previously exposed to 10 mg kg-1 bw of furan group. Based on the above results, it is suggested that exposure to food-based contaminant furan induced remarkable changes in the F0 (parental stage) and F1 (offspring, pubertal, and adult stage) generations of Sprague Dawley rats.
Collapse
Affiliation(s)
- H Rehman
- Reproductive Physiology Laboratory, Faculty of Biological Sciences, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan.,Division of Physiology, Department of Neuroscience, Uppsala Biomedical Centre (BMC), Uppsala University, Uppsala, Sweden
| | - S Jahan
- Reproductive Physiology Laboratory, Faculty of Biological Sciences, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - I Ullah
- Division of Physiology, Department of Neuroscience, Uppsala Biomedical Centre (BMC), Uppsala University, Uppsala, Sweden
| | - P-O Thörnqvist
- Division of Physiology, Department of Neuroscience, Uppsala Biomedical Centre (BMC), Uppsala University, Uppsala, Sweden
| | - M Jabbar
- Department of Statistics, University of Gujrat, Gujrat, Pakistan
| | - M Shoaib
- Reproductive Physiology Laboratory, Faculty of Biological Sciences, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - F Aman
- Reproductive Physiology Laboratory, Faculty of Biological Sciences, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - N John
- Reproductive Physiology Laboratory, Faculty of Biological Sciences, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| |
Collapse
|
19
|
Tahir S, Yousaf M, Rashid M, Khan A, Ahmad S, Zaneb H, Khan I, Rehman H. Supplemental chromium-loaded chitosan nanoparticles affect growth, serum metabolites and intestinal histology in broilers. S AFR J ANIM SCI 2020. [DOI: 10.4314/sajas.v49i6.11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The goal of the present research was to evaluate the effects of chromium-loaded chitosan nanoparticles (Cr-CNPs) on production performance, viscera development, serum metabolites and intestinal histology in broilers. Two hundred (200) day-old broilers were randomly divided into five groups with five replicates (n = 8). Birds in the first group served as control and were fed a corn soybean-based diet, while the remaining four supplemented groups were offered 200, 400, 800, and 1200 μg Cr-CNPs/kg of feed, respectively, for 35 days. Weight gain, feed intake and feed conversion ratio (FCR) remained unaffected with Cr-CNP supplementation. No changes were observed in the relative weights of viscera. The relative length of the small intestine was decreased in birds supplemented with 200 and 800 μg Cr-CNPs/kg compared with the 1200 μg Cr-CNP-supplemented group and control. Serum metabolites remained unaffected with Cr-CNP supplementation except for serum HDL, which was increased. Cr-CNPs decreased the retention of chromium in the bone at higher concentrations. Jejunal villus height, villus surface area, and villus height to crypt depth ratio were increased in the 800 μg Cr-CNP-supplemented group. In conclusion, Cr-CNPs did not affect growth performance, viscera development, and most of the serum metabolites, but enhanced jejunal morphological attributes at 800 μg Cr-CNPs/kg of feed.
Keywords: blood biochemistry, health, nano-biotechnology, prebiotics, poultry, trace mineral
Collapse
|
20
|
Rehman H, Ali Z, G. Shahzady T, A. Abid M, Nazir S, Hussain H, Zahra A, Hussain I. Synthesis, X-ray analysis and antibacterial study of silver complex with ethyl-5-hydroxy- 2-oxo-2H-chromene-3-carboxylate. B CHEM SOC ETHIOPIA 2019. [DOI: 10.4314/bcse.v33i3.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
21
|
Sattar H, Firyal S, Awan AR, Rehman H, Wasim M, Tayyab M, Anjum AA. Bacteriological and biochemical analysis of raw milk samples from mastitic sahiwal cows of the Punjab province. J BIOL REG HOMEOS AG 2019; 33:1545-1549. [PMID: 31588718 DOI: 10.23812/19-153-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- H Sattar
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - S Firyal
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - A R Awan
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - H Rehman
- Department of Physiology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - M Wasim
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - M Tayyab
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - A A Anjum
- Department of Microbiology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| |
Collapse
|
22
|
Shah M, Zaneb H, Masood S, Khan I, Sikandar A, Ashraf S, Rehman H, Usman M, Khan F, Amanullah H, Rehman H. Effect of zinc and probiotics supplementation on performance and immune organs morphology in heat stressed broilers. S AFR J ANIM SCI 2019. [DOI: 10.4314/sajas.v48i6.3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
23
|
Khan A, Rehman H. Case report; mycobacterium chimaera associated pulmonary disease in two members of the same household. J Infect Public Health 2019. [DOI: 10.1016/j.jiph.2018.10.054] [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: 10/27/2022] Open
|
24
|
|
25
|
Rehman HF, Zaneb H, Masood S, Yousaf MS, Ashraf S, Khan I, Shah M, Khilji MS, Rehman H. Effect of Moringa Oleifera Leaf Powder Supplementation on Pectoral Muscle Quality and Morphometric Characteristics of Tibia Bone in Broiler Chickens. Braz J Poult Sci 2018. [DOI: 10.1590/1806-9061-2017-0609] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- HF Rehman
- University of Veterinary and Animal Sciences, Pakistan
| | - H Zaneb
- University of Veterinary and Animal Sciences, Pakistan
| | - S Masood
- University of Veterinary and Animal Sciences, Pakistan
| | - MS Yousaf
- University of Veterinary and Animal Sciences, Pakistan
| | - S Ashraf
- University of Veterinary and Animal Sciences, Pakistan
| | - I Khan
- University of Veterinary and Animal Sciences, Pakistan
| | - M Shah
- University of Veterinary and Animal Sciences, Pakistan
| | - MS Khilji
- University of Veterinary and Animal Sciences, Pakistan
| | - H Rehman
- University of Veterinary and Animal Sciences, Pakistan
| |
Collapse
|
26
|
Jamorabo D, Deek M, Rehman H, Motwani S, Yom S, Zietman A, Jabbour S, Chang D. Can Demographic Factors or Academic Metrics of Red Journal Reviewers Predict the Quality of their Reviews? Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1157] [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: 11/30/2022]
|
27
|
Ur Rehman K, Zaneb H, Qureshi A, Numan A, Yousaf M, Rabbani I, Rehman H. 043 Testicular blood flow in varicocele patients and it’s correlation with semen quality. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.047] [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: 10/28/2022]
|
28
|
Khan I, Zaneb H, Masood S, Yousaf MS, Rehman HF, Rehman H. Effect of Moringa oleifera leaf powder supplementation on growth performance and intestinal morphology in broiler chickens. J Anim Physiol Anim Nutr (Berl) 2018. [PMID: 28627054 DOI: 10.1111/jpn.12634] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Due to public health hazards of subtherapeutic use of antibiotics in poultry feed, there is a need for alternatives. Moringa oleifera is a phytobiotic, which is reported to possess antimicrobial and immuno-modulatory properties. This study aimed to investigate effects of M. oleifera leaf powder (MOLP) supplementation on growth performance and intestinal microarchitecture of broiler chickens. Day-old broiler chicks (n = 100) were randomly divided into five groups with four replicates each having five birds. Birds were fed a corn-based basal diet or the same diet supplemented with 0.6, 0.9, 1.2 and 1.5% MOLP. Body weight and feed conversion ratio were recorded on weekly basis. On day 35, two birds per replicate were selected to collect samples of duodenum, jejunum, ileum, caecal tonsils and bursa of Fabricius. Tissue samples were stained with haematoxylin and eosin or combined alcian blue and PAS technique. Supplementation of MOLP had no effect on feed intake, feed conversion ratio, bursa weight and intra-epithelial lymphocytes (IEL) count. Birds fed with 1.2% MOLP had higher (p < 0.05) body weight, length and empty weight of small intestine, and weight of empty and filled ceca. Villus height (duodenum, jejunum, ileum), villus surface area (duodenum) and villus height:crypt depth (ileum) were higher (p < 0.05) in 1.2% MOLP group compared with non-supplemented group. In duodenum, total goblet cell count was higher (p < 0.05) in all the supplemented groups when compared with non-supplemented birds. Acidic mucin count was higher (p < 0.05) in duodenum, jejunum and ileum of 1.2% MOLP group compared with the control group. Bursal follicle count was higher (p < 0.05) in 1.2% MOLP group compared with non-supplemented group. In conclusion, dietary supplementation of 1.2% MOLP modulated intestinal microarchitecture and acidic mucin production without any apparent effect on growth.
Collapse
Affiliation(s)
- I Khan
- Department of Anatomy and Histology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - H Zaneb
- Department of Anatomy and Histology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - S Masood
- Department of Anatomy and Histology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - M S Yousaf
- Department of Physiology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - H F Rehman
- Department of Anatomy and Histology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - H Rehman
- Department of Physiology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| |
Collapse
|
29
|
Rehman H, Qadir A, Ali Z, Nazir S, Zahra A, G. Shahzady T. Synthesis and characterization of novel sulfonamides derivatives and their antimicrobial, antioxidant and cytotoxicity evaluation. B CHEM SOC ETHIOPIA 2018. [DOI: 10.4314/bcse.v31i3.13] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
30
|
Patel G, Chandar A, Rehman H, Guo S. P385 A case of immune thrombocytopenia (itp) and acquired factor viii inhibitor refractory to immunosuppression. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.09.018] [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: 10/18/2022]
|
31
|
Ashraf S, Zaneb H, Masood S, Yousaf S, Usman MM, Rehman HF, Sikandar A, Rehman H. Influence of β-galacto-oligosaccharide on growth performance and components of intestinal barrier in broilers during heat stress. S AFR J ANIM SCI 2017. [DOI: 10.4314/sajas.v47i5.4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
32
|
Naseer R, Hashmi ASH, Hassan ZU, Rehman H, Naveed S, Masood F, Tayyab M. Assessment of Feeding Value of Processed Rice Husk for Lohi Sheep in Growing Phase. PAK J ZOOL 2017. [DOI: 10.17582/journal.pjz/2017.49.5.1725.1729] [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: 11/24/2022]
|
33
|
Ur Rehman K, Qureshi AB, Numan A, Zaneb H, Yousaf MS, Rabbani I, Rehman H. Pressure flow pattern of varicocele veins and its correlation with testicular blood flow and semen parameters. Andrologia 2017; 50. [PMID: 28766734 DOI: 10.1111/and.12856] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 04/25/2017] [Indexed: 01/20/2023] Open
Abstract
The pressure pattern in varicocele veins of infertile patients and its correlation with semen quality and testicular blood flow was determined. Consecutive patients at andro-urology clinic of a teaching hospital undergoing microsurgical varicocelectomy were included. Their semen quality and testicular blood flow were determined. Peak systolic velocity (PSV) and resistive index (RI) of subcapsular and intraparenchymal branches of testicular artery were noted by colour Doppler ultrasonography. During surgery before ligation of varicocele veins, intravenous pressures of internal spermatic (ISV) and external spermatic (ESV) veins were determined at baseline and after Valsalva manoeuvre. Thirty patients, 20-45 years old, were evaluated. Baseline pressure for maximum dilated ISV (A), less dilated ISV (B) and ESV was 15.93 ± 6.34, 12.38 ± 4.60 and 12.92 ± 5.65 mm. Hg, respectively, which increased after Valsalva by 104.4%, 116.2% and 38.22% respectively. Correlation (r = -.71; p < .05) was appreciated between percentage increase in pressure of ISV B with PSV of intraparenchymal testicular arteries and progressive motility (r = -.759; p < .05), nonprogressive motility (r = -.738; p < .05) and morphology (r = -.653; p = .07) of spermatozoa. In conclusion, ISV develops higher pressure on Valsalva as compared to ESV and has correlation with semen quality and testicular blood flow.
Collapse
Affiliation(s)
- K Ur Rehman
- FMH College of Medicine & Dentistry, Lahore, Pakistan
| | - A B Qureshi
- Services Institute of Medical Sciences, Lahore, Pakistan
| | - A Numan
- Services Institute of Medical Sciences, Lahore, Pakistan
| | - H Zaneb
- University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - M S Yousaf
- University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - I Rabbani
- University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - H Rehman
- University of Veterinary and Animal Sciences, Lahore, Pakistan
| |
Collapse
|
34
|
Ali Z, R. Gilani S, Hussain H, Rehman H, Hussain I, A. Gilani M, Rabbani F. Synthesis, structural and antibacterial study of new silver complex with 3-acetyl-2H chromene-2-one. B CHEM SOC ETHIOPIA 2017. [DOI: 10.4314/bcse.v30i3.8] [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: 11/17/2022] Open
|
35
|
Saggu S, Rehman H. Modulatory role of Cymbopogon schoenanthus extract on Cd-induced hematological alterations in Swiss albino mice. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1833] [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: 11/30/2022]
|
36
|
|
37
|
Rehman H. Finger rolls: an improvised applicator for atraumatic, sterile application of finger tourniquets. Ann R Coll Surg Engl 2016; 99:93-94. [PMID: 27513788 DOI: 10.1308/rcsann.2016.0229] [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: 11/22/2022] Open
Affiliation(s)
- H Rehman
- Trauma and Orthopaedics, Aberdeen Royal Infirmary, Foresterhill , Aberdeen , UK
| |
Collapse
|
38
|
Kassi M, Karmonik C, Engelke J, Eshelbrenner C, Rehman H, Belousova T, Bhimaraj A, Estep J, Chang S. Correlation of LVAD Outflow Graft Orientation with Aortic Root Thrombosis Rationalized by Patient Specific Computational Fluid Dynamics Simulations. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.697] [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: 10/21/2022] Open
|
39
|
Erskine PT, Fokas A, Muriithi C, Rehman H, Yates LA, Bowyer A, Findlow IS, Hagan R, Werner JM, Miles AJ, Wallace BA, Wells SA, Wood SP, Cooper JB. X-ray, spectroscopic and normal-mode dynamics of calexcitin: structure-function studies of a neuronal calcium-signalling protein. ACTA ACUST UNITED AC 2015; 71:615-31. [PMID: 25760610 DOI: 10.1107/s1399004714026704] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Accepted: 12/04/2014] [Indexed: 01/28/2023]
Abstract
The protein calexcitin was originally identified in molluscan photoreceptor neurons as a 20 kDa molecule which was up-regulated and phosphorylated following a Pavlovian conditioning protocol. Subsequent studies showed that calexcitin regulates the voltage-dependent potassium channel and the calcium-dependent potassium channel as well as causing the release of calcium ions from the endoplasmic reticulum (ER) by binding to the ryanodine receptor. A crystal structure of calexcitin from the squid Loligo pealei showed that the fold is similar to that of another signalling protein, calmodulin, the N- and C-terminal domains of which are known to separate upon calcium binding, allowing interactions with the target protein. Phosphorylation of calexcitin causes it to translocate to the cell membrane, where its effects on membrane excitability are exerted and, accordingly, L. pealei calexcitin contains two protein kinase C phosphorylation sites (Thr61 and Thr188). Thr-to-Asp mutations which mimic phosphorylation of the protein were introduced and crystal structures of the corresponding single and double mutants were determined, which suggest that the C-terminal phosphorylation site (Thr188) exerts the greatest effects on the protein structure. Extensive NMR studies were also conducted, which demonstrate that the wild-type protein predominantly adopts a more open conformation in solution than the crystallographic studies have indicated and, accordingly, normal-mode dynamic simulations suggest that it has considerably greater capacity for flexible motion than the X-ray studies had suggested. Like calmodulin, calexcitin consists of four EF-hand motifs, although only the first three EF-hands of calexcitin are involved in binding calcium ions; the C-terminal EF-hand lacks the appropriate amino acids. Hence, calexcitin possesses two functional EF-hands in close proximity in its N-terminal domain and one functional calcium site in its C-terminal domain. There is evidence that the protein has two markedly different affinities for calcium ions, the weaker of which is most likely to be associated with binding of calcium ions to the protein during neuronal excitation. In the current study, site-directed mutagenesis has been used to abolish each of the three calcium-binding sites of calexcitin, and these experiments suggest that it is the single calcium-binding site in the C-terminal domain of the protein which is likely to have a sensory role in the neuron.
Collapse
Affiliation(s)
- P T Erskine
- Laboratory of Protein Crystallography, Centre for Amyloidosis and Acute Phase Proteins, UCL Division of Medicine (Royal Free Campus), Rowland Hill Street, London NW3 2PF, England
| | - A Fokas
- Laboratory of Protein Crystallography, Centre for Amyloidosis and Acute Phase Proteins, UCL Division of Medicine (Royal Free Campus), Rowland Hill Street, London NW3 2PF, England
| | - C Muriithi
- Laboratory of Protein Crystallography, Centre for Amyloidosis and Acute Phase Proteins, UCL Division of Medicine (Royal Free Campus), Rowland Hill Street, London NW3 2PF, England
| | - H Rehman
- Laboratory of Protein Crystallography, Centre for Amyloidosis and Acute Phase Proteins, UCL Division of Medicine (Royal Free Campus), Rowland Hill Street, London NW3 2PF, England
| | - L A Yates
- Centre of Biological Sciences, University of Southampton, Southampton SO17 1BJ, England
| | - A Bowyer
- Centre of Biological Sciences, University of Southampton, Southampton SO17 1BJ, England
| | - I S Findlow
- Centre of Biological Sciences, University of Southampton, Southampton SO17 1BJ, England
| | - R Hagan
- Centre of Biological Sciences, University of Southampton, Southampton SO17 1BJ, England
| | - J M Werner
- Centre of Biological Sciences, University of Southampton, Southampton SO17 1BJ, England
| | - A J Miles
- Institute of Structural and Molecular Biology, Birkbeck College, University of London, London WC1E 7HX, England
| | - B A Wallace
- Institute of Structural and Molecular Biology, Birkbeck College, University of London, London WC1E 7HX, England
| | - S A Wells
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, England
| | - S P Wood
- Laboratory of Protein Crystallography, Centre for Amyloidosis and Acute Phase Proteins, UCL Division of Medicine (Royal Free Campus), Rowland Hill Street, London NW3 2PF, England
| | - J B Cooper
- Laboratory of Protein Crystallography, Centre for Amyloidosis and Acute Phase Proteins, UCL Division of Medicine (Royal Free Campus), Rowland Hill Street, London NW3 2PF, England
| |
Collapse
|
40
|
Ashraf S, Zaneb H, Yousaf MS, Ijaz A, Sohail MU, Muti S, Usman MM, Ijaz S, Rehman H. Effect of dietary supplementation of prebiotics and probiotics on intestinal microarchitecture in broilers reared under cyclic heat stress. J Anim Physiol Anim Nutr (Berl) 2013; 97 Suppl 1:68-73. [PMID: 23639019 DOI: 10.1111/jpn.12041] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2012] [Accepted: 12/15/2012] [Indexed: 11/28/2022]
Abstract
This study was designed to evaluate the effect of dietary supplementation of prebiotics, mannanoligosaccharides (MOS) and/or probiotics (LBP) on intraepithelial lymphocytes (IEL) count, goblet cells (GC) count and differentiation and intestinal micro-architecture in broilers reared under cyclic heat stress. Day-old broilers (n = 250) were randomly divided into five groups. Fifty birds were reared within the thermoneutral zone (TNZ). Remaining birds were subjected to cyclic heat stress from day 21 to 42 (35° C, 75% RH, 8 h/d). The birds were fed corn-soy-based basal diet or the same diet supplemented with 0.5% MOS (HS-MOS), or 0.1% LBP (HS-LBP), or their combination (HS-SYN). The birds were slaughtered on day 42. Tissue samples were collected from mid-duodenum, jejunum and ileum, and stained with haematoxylin and eosin or combined Alcian blue and PAS technique. All differences were considered significant at p < 0.05. The IEL count increased in all intestinal segments of the HS group compared with the TNZ group and decreased in all supplemented groups compared with the HS group. Compared with the TNZ, heat stress reduced villus height, crypt depth and surface area in duodenum and ileum, and increased crypt depth in ileum. Villus width decreased in duodenum and jejunum compared with the TNZ group. Supplementation of LBP, MOS and SYN reversed all these changes in duodenum, while only increased villus height and surface area in ileum. In jejunum, the villus height and surface area increased with HS-LBP, and crypt depth increased with HS-MOS. The number of GC containing acid mucins (duodenum and ileum) and mixed mucins (ileum) were increased in the HS compared with the TNZ. Supplementation of MOS, LBP and SYN maintained the enhanced activity of goblet cells. In conclusion, dietary supplementation of MOS and/or LBP may be helpful in alleviating some of the detrimental effects of heat stress on microstructure of the broiler gut.
Collapse
Affiliation(s)
- S Ashraf
- Department of Anatomy and Histology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Sohail M, Ijaz A, Younus M, Shabbir M, Kamran Z, Ahmad S, Anwar H, Yousaf M, Ashraf K, Shahzad A, Rehman H. Effect of supplementation of mannan oligosaccharide and probiotic on growth performance, relative weights of viscera, and population of selected intestinal bacteria in cyclic heat-stressed broilers. J APPL POULTRY RES 2013. [DOI: 10.3382/japr.2012-00682] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
42
|
Imtiaz S, Alswaida A, Rehman H, Faraz N, Afshan T, Alkafoury H, Qayyum S, Al Khoiter M. Transformation of membranous into anti-GBM nephritis. Indian J Nephrol 2013; 22:370-3. [PMID: 23326049 PMCID: PMC3544060 DOI: 10.4103/0971-4065.103924] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Membranous nephropathy is a common glomerular disease. We report a 50-year-old man with a history of membranous nephropathy in remission, who presented with acute kidney injury, proteinuria, hematuria, and hypertension. He also had a high anti-glomerular basement membrane (anti-GBM) antibody titer and crescent transformation of primary pathology. The kidney functions deteriorated rapidly despite aggressive therapy with cyclophosphamide, methylprednisolone, and plasmapheresis.
Collapse
Affiliation(s)
- S Imtiaz
- Department of Medicine, King Khalid University, Hospital Riyadh, Saudi Arabia
| | | | | | | | | | | | | | | |
Collapse
|
43
|
Sohail M, Hume M, Byrd J, Nisbet D, Ijaz A, Sohail A, Shabbir M, Rehman H. Effect of supplementation of prebiotic mannan-oligosaccharides and probiotic mixture on growth performance of broilers subjected to chronic heat stress. Poult Sci 2012; 91:2235-40. [DOI: 10.3382/ps.2012-02182] [Citation(s) in RCA: 222] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
|
44
|
Liu Q, Rehman H, Krishnasamy Y, Haque K, Schnellmann R, Lemasters J, Zhong Z. Amphiregulin stimulates liver regeneration after small-for-size mouse liver transplantation. Am J Transplant 2012; 12:2052-61. [PMID: 22694592 PMCID: PMC3409348 DOI: 10.1111/j.1600-6143.2012.04069.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [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: 01/25/2023]
Abstract
This study investigated whether amphiregulin (AR), a ligand of the epidermal growth factor receptor (EGFR), improves liver regeneration after small-for-size liver transplantation. Livers of male C57BL/6 mice were reduced to ~50% and ~30% of original sizes and transplanted. After transplantation, AR and AR mRNA increased in 50% but not in 30% grafts. 5-Bromodeoxyuridine (BrdU) labeling, proliferating cell nuclear antigen (PCNA) expression and mitotic index increased substantially in 50% but not 30% grafts. Hyperbilirubinemia and hypoalbuminemia occurred and survival decreased after transplantation of 30% but not 50% grafts. AR neutralizing antibody blunted regeneration in 50% grafts whereas AR injection (5 μg/mouse, iv) stimulated liver regeneration, improved liver function and increased survival after transplantation of 30% grafts. Phosphorylation of EGFR and its downstream signaling molecules Akt, mTOR, p70S6K, ERK and JNK increased markedly in 50% but not 30% grafts. AR stimulated EGFR phosphorylation and its downstream signaling pathways. EGFR inhibitor PD153035 suppressed regeneration of 50% grafts and largely abrogated stimulation of regeneration of 30% grafts by AR. AR also increased cyclin D1 and cyclin E expression in 30% grafts. Together, liver regeneration is suppressed in small-for-size grafts, as least in part, due to decreased AR formation. AR supplementation could be a promising therapy to stimulate regeneration of partial liver grafts.
Collapse
Affiliation(s)
- Q. Liu
- Department of Pharmaceutical & Biomedical Sciences, Medical University of South Carolina, Charleston, SC 29425,Department of General Surgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - H. Rehman
- Department of Pharmaceutical & Biomedical Sciences, Medical University of South Carolina, Charleston, SC 29425
| | - Y. Krishnasamy
- Department of Pharmaceutical & Biomedical Sciences, Medical University of South Carolina, Charleston, SC 29425
| | - K. Haque
- Department of Pharmaceutical & Biomedical Sciences, Medical University of South Carolina, Charleston, SC 29425
| | - R.G. Schnellmann
- Department of Pharmaceutical & Biomedical Sciences, Medical University of South Carolina, Charleston, SC 29425,Ralph H. Johnson VA Medical Center, Charleston, SC 29403
| | - J.J. Lemasters
- Department of Pharmaceutical & Biomedical Sciences, Medical University of South Carolina, Charleston, SC 29425,Department of Biochemistry & Molecular Biology, Medical University of South Carolina, Charleston, SC 29425,Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425
| | - Z. Zhong
- Department of Pharmaceutical & Biomedical Sciences, Medical University of South Carolina, Charleston, SC 29425,Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425
| |
Collapse
|
45
|
Khan A, Yousaf M, Rehman H, Zaneb H, Pasha T, Fatima N, Khushal A, Ijaz A, Ashraf K, Afzal M. Response of maternally isolated rock pigeons (Columba livia domestica) to different dietary concentrations of mannan-oligosaccharide. Poult Sci 2012; 91:1598-603. [DOI: 10.3382/ps.2011-02042] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
46
|
Yunus AW, Blajet-Kosicka A, Kosicki R, Khan MZ, Rehman H, Böhm J. Deoxynivalenol as a contaminant of broiler feed: intestinal development, absorptive functionality, and metabolism of the mycotoxin. Poult Sci 2012; 91:852-61. [PMID: 22399724 DOI: 10.3382/ps.2011-01903] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Deoxynivalenol (DON) has been recently documented to deteriorate intestinal morphology in chickens at dietary doses that are regarded as safe for this species. The present trial was conducted to explore the significance of these morphological changes in relation to intestinal absorptive functionality and DON metabolism. Ross broilers at 7 d of age were fed either a basal diet (0.265 ± 0.048 mg of DON/kg; 0.013 ± 0.001 mg of zearalenone/kg), a low DON diet (1.68 mg of DON/kg; 0.145 ± 0.007 mg of zearalenone/kg), or a high DON diet (12.209 ± 1.149 mg of DON/kg; 1.094 ± 0.244 mg of zearalenone/kg). The DON diets (to variable degrees) progressively decreased the relative density (weight:length) of the small intestine with increasing exposure length, which could be correlated with a decrease in villus height in the small intestine. Short circuit current of the jejunal epithelium, reflecting transport function of the epithelium per unit area, was reduced (P = 0.001) in the birds fed the high DON diet. The increasing dietary level of DON linearly (P = 0.035) increased the length of the jejunum in wk 4 of exposure, resulting in conservation of macronutrient retention. Upon challenging the birds with a fixed amount of DON after wk 5 of exposure, higher (P ≤ 0.033) amounts of DON and the detoxification metabolite (de-epoxy-DON) were found at 5 h postchallenge in the guts of birds raised on the DON diets. The increasing level of previous exposure to DON linearly (P = 0.040) decreased the plasma level of DON in the birds at 1 h postchallenge. The amounts of zearalenone and its analogs in the gut and plasma also followed a trend similar to that for DON. These data suggest that intestines in chickens may adapt to a chronic DON challenge by morphological and functional modifications. The birds having previous exposure to Fusarium mycotoxins showed moderate detoxification coupled with reduced transfer of the mycotoxins to systemic circulation. Some metabolites of zearalenone found in this study were previously unknown for chickens.
Collapse
Affiliation(s)
- A W Yunus
- Institute of Animal Nutrition, Department for Farm Animal and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, A-1210 Vienna, Austria.
| | | | | | | | | | | |
Collapse
|
47
|
Rehman H, Fitzgerald J, Ahmed I. Single port/incision laparoscopic surgery: A national survey of awareness, experience and opinions. Int J Surg 2012. [DOI: 10.1016/j.ijsu.2012.06.405] [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: 11/26/2022]
|
48
|
Sohail M, Rahman Z, Ijaz A, Yousaf M, Ashraf K, Yaqub T, Zaneb H, Anwar H, Rehman H. Single or combined effects of mannan-oligosaccharides and probiotic supplements on the total oxidants, total antioxidants, enzymatic antioxidants, liver enzymes, and serum trace minerals in cyclic heat-stressed broilers. Poult Sci 2011; 90:2573-7. [DOI: 10.3382/ps.2011-01502] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|
49
|
Abstract
INTRODUCTION Single port/incision laparoscopic surgery (SPILS) is a modern advancement toward stealth surgery. Despite the paucity of high-quality scientific studies assessing its effectiveness, this procedure is being used increasingly. This review aims to describe commonly used techniques for SPILS appendicectomies (SPILA), to summarise complication rates in the literature and to provide discussion on indications and implementation. METHODS All available databases including the Cochrane Central Register of Controlled Trials, MEDLINE(®) and Embase™ were searched in February 2011 and cross-referenced for available English literature describing SPILA in patients of any age. RESULTS Three broad technical approaches are described: procedures using laparoscopic instruments through a single skin incision in the abdominal wall, regardless of the number of fascial incisions, with or without the additional use of percutaneous sutures or wires to 'assist' the operation, and hybrid procedures, in which the appendix is exteriorised using a single incision laparoscopically assisted operation but subsequently divided using a conventional 'open' appendicectomy technique. Complication rates seem to be highest in SPILA procedures unassisted by sutures or wires. CONCLUSIONS Future research assessing the efficacy of single incision laparoscopic procedures should consider variation in technique as a possible factor affecting outcome.
Collapse
Affiliation(s)
- H Rehman
- Department of Hepatopancreatobiliary Surgery, Aberdeen Royal Infirmary, Foresterhill, Aberdeen, AB25 2ZN, UK.
| | | |
Collapse
|
50
|
Rehman H, Mohan A, Tabassum H, Ahmad F, Rahman S, Parvez S, Raisuddin S. Deltamethrin Increases Candida albicans infection susceptibility in mice. Scand J Immunol 2011; 73:459-64. [PMID: 21272049 DOI: 10.1111/j.1365-3083.2011.02521.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Deltamethrin, an alpha-cyano type II synthetic pyrethroid insecticide, is used to control a wide range of insects on a variety of crops and vectors of diseases. Deltamethrin has been previously reported for its immunotoxic effects and therefore its exposure may affect the host resistance to infection and tumour challenge. Effect of exposure of deltamethrin on host resistance to Candida albicans infection was examined in Swiss albino mice. The objective of this study was to investigate the modulatory action of deltamethrin in C. albicans infected mice. The dose of deltamethrin was initially tested and selected from our previous study (18 mg/kg). Percentage of infection in deltamethrin treated animals increased faster when compared to that of the controls. Deltamethrin exposure along with C. albicans infection caused alteration of humoral immune response. The number of colony forming unit in liver and spleen were also found to be significantly increased in the treated group. The results from our present study suggest that deltamethrin exhibits an immunosuppressive effect and has a negative impact on host resistance to C. albicans infection.
Collapse
Affiliation(s)
- H Rehman
- Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), New Delhi, India
| | | | | | | | | | | | | |
Collapse
|