1
|
Ferdaus MJ, Barman B, Mahmud N, da Silva RC. Oleogels as a Promising Alternative to Animal Fat in Saturated Fat-Reduced Meat Products: A Review. Gels 2024; 10:92. [PMID: 38391422 PMCID: PMC10888177 DOI: 10.3390/gels10020092] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/22/2024] [Accepted: 01/22/2024] [Indexed: 02/24/2024] Open
Abstract
The surge in chronic diseases is closely linked to heightened levels of saturated and trans fatty acids in processed foods, particularly meat products. Addressing this concern, various strategies have been employed to alleviate the impact of these detrimental fats. Among these, oleogels have emerged as a novel and promising approach in the food industry. As restructured fat systems, oleogels offer a unique opportunity to enhance the nutritional profile of meat products while providing distinct health and environmental advantages. This comprehensive review explores the transformative role of oleogels as innovative substitutes for traditional animal fats in a variety of meat products. Utilizing materials such as hydroxypropyl methylcellulose (HPMC), sterols, beeswax, γ-oryzanol, β-sitosterol, and others, oleogels have been investigated in diverse studies. The examination encompasses their impact on the textural, nutritional, and oxidative dimensions of meat patties, pork patties, pork liver pâtés, beef heart patties, and meat batters. An in-depth exploration is undertaken into the influence of various elements, including the type of oil, gelling agents, and processing methods, on the stability and physicochemical attributes of oleogels. Additionally, the paper scrutinizes the potential effects of oleogels on sensory attributes, texture, and the shelf life of meat products. In conclusion, this collective body of research emphasizes the versatility and efficacy of oleogels as viable replacements for traditional animal fats across a spectrum of meat products. The documented improvements in nutritional quality, oxidative stability, and sensory attributes pave the way for the development of healthier and more sustainable formulations in the meat industry.
Collapse
Affiliation(s)
- Md Jannatul Ferdaus
- Family and Consumer Sciences Department, College of Agriculture and Environmental Sciences (CAES), North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Bishal Barman
- Family and Consumer Sciences Department, College of Agriculture and Environmental Sciences (CAES), North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Niaz Mahmud
- Family and Consumer Sciences Department, College of Agriculture and Environmental Sciences (CAES), North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Roberta Claro da Silva
- Family and Consumer Sciences Department, College of Agriculture and Environmental Sciences (CAES), North Carolina A&T State University, Greensboro, NC 27411, USA
| |
Collapse
|
2
|
Ahmed S, Mahmud N, Farzana N, Parvin MI, Alauddin M. Early Initiation of Breastfeeding (EIBF) and Its Associated Factors Among Mothers With Infants Aged 0 to 6 Months in Jashore District, Bangladesh: A Cross-Sectional Study. J Am Nutr Assoc 2023; 42:737-745. [PMID: 36630312 DOI: 10.1080/27697061.2022.2161663] [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] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/02/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
OBJECTIVE Early initiation of breastfeeding (EIBF) is one of the most successful interventions for minimizing newborn morbidity and death. According to the database (Bangladesh Demographic Health Survey 2014), only around half of babies begin breastfeeding during the first hour of life in Bangladesh. The goal of this study was to determine the prevalence of EIBF in the Jashore area while also investigating its associated factors among mothers of infants aged 0 to 6 months in order to better understand the variables that impacted breastfeeding initiation. METHOD A cross-sectional study was conducted in the maternity wards of the 3 busiest hospitals in the Jashore district of Bangladesh from May to July 2019. Using random sampling, a total of 423 mother-infant pairs were chosen. Pearson chi-square test and bivariable and multivariable logistic regression statistical analysis were used to identify factors linked to EIBF. RESULTS The prevalence of EIBF was 46.3% (196/423). Mothers who had skin-to-skin contact after delivery (adjusted odds ratio [AOR], 2.25; 95% confidential interval [CI], 1.40-3.59), who did not deliver prelacteal food (AOR, 3.68; 95% CI, 1.65-8.21), and who provided colostrum (AOR, 5.89; 95% CI, 1.62-21.49) were more likely to begin breastfeeding within 1 hour than were their counterparts. CONCLUSIONS EIBF was found to be strongly linked with skin-to-skin contact after delivery, avoidance of prelacteal feeding, and colostrum feeding practice. As a result, we strongly urge public health officials and health care practitioners to encourage these feeding behaviors in order to increase EIBF.
Collapse
Affiliation(s)
- Suzon Ahmed
- Department of Nutrition and Food Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Niaz Mahmud
- Department of Nutrition and Food Technology, Jashore University of Science and Technology, Jashore, Bangladesh
- Food and Nutritional Sciences Program, North Carolina Agricultural and Technical State University, Greensboro, North Carolina, USA
| | - Nisat Farzana
- Department of Nutrition and Food Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Mst Irin Parvin
- Department of Nutrition and Food Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Md Alauddin
- Department of Nutrition and Food Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| |
Collapse
|
3
|
Mahmud N, Islam J, Oyom W, Adrah K, Adegoke SC, Tahergorabi R. A review of different frying oils and oleogels as alternative frying media for fat-uptake reduction in deep-fat fried foods. Heliyon 2023; 9:e21500. [PMID: 38027829 PMCID: PMC10660127 DOI: 10.1016/j.heliyon.2023.e21500] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Purpose This review aims to examine the potential of oleogels as a frying medium to decrease oil absorption during deep-frying and enhance the nutritional and energy content of foods. By investigating the factors influencing oil incorporation during deep-frying and examining the application of oleogels in this process, we seek to provide insights into using oleogels as an alternative to traditional cooking oils. Scope Deep-frying, a widely used cooking method, leads to the retention of large amounts of oil in fried food, which has been associated with health concerns. To address this issue, researchers have investigated various methods to minimize oil absorption during frying. One promising approach is the use of oleogels, which are thermo-reversible, three-dimensional gel networks formed by entrapment of bulk oil with a low concentration (<10% of weight) of solid lipid materials known as oleogelators. This review will focus on the following aspects: a) an overview of deep-fried foods, b) factors influencing oil uptake and underlying mechanisms for oil absorption during deep-frying, c) the characterization and application of different frying oils and their oleogels in deep-fried foods, d) components of the oleogel system for deep-frying, and e) the health impact, oxidative stability, and sensory acceptability of using oleogels in deep-frying. Key findings The review highlights the potential of oleogels as a promising alternative frying medium to reduce fat absorption in deep-fried foods. Considering the factors influencing oil uptake during deep-frying, as well as exploring the properties and applications of different frying oils and their oleogels, can result in improved product qualities and heightened consumer acceptance. Moreover, oleogels offer the advantage of lower fat content in fried products, addressing health concerns associated with traditional deep-frying methods. The capacity to enhance the nutritional and energy profile of foods while preserving sensory qualities and oxidative stability positions oleogels as a promising choice for upcoming food processing applications.
Collapse
Affiliation(s)
- Niaz Mahmud
- Food and Nutritional Sciences Program, North Carolina Agricultural & Technical State University, Greensboro, NC, 27411, USA
| | - Joinul Islam
- Food and Nutritional Sciences Program, North Carolina Agricultural & Technical State University, Greensboro, NC, 27411, USA
- Department of Food Science and Technology, University of Georgia, Athens, GA, 30602, USA
| | - William Oyom
- Food and Nutritional Sciences Program, North Carolina Agricultural & Technical State University, Greensboro, NC, 27411, USA
| | - Kelvin Adrah
- Joint School of Nanoscience and Nanoengineering, 2907 East Gate City Blvd, Greensboro, NC, 27401, USA
| | | | - Reza Tahergorabi
- Food and Nutritional Sciences Program, North Carolina Agricultural & Technical State University, Greensboro, NC, 27411, USA
| |
Collapse
|
4
|
Garavand F, Khodaei D, Mahmud N, Islam J, Khan I, Jafarzadeh S, Tahergorabi R, Cacciotti I. Recent progress in using zein nanoparticles-loaded nanocomposites for food packaging applications. Crit Rev Food Sci Nutr 2022; 64:3639-3659. [PMID: 36222362 DOI: 10.1080/10408398.2022.2133080] [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: 11/03/2022]
Abstract
Biopolymers are important due to their exceptional functional and barrier properties and also their non-toxicity and eco-friendly nature for various food, biomedical, and pharmaceutical applications. However, biopolymers usually need reinforcement strategies to address their poor mechanical, thermal, and physical properties as well as processability aspects. Several natural nanoparticles have been proposed as reinforcing agents for biopolymeric food packaging materials. Among them, zein nanoparticles (ZNPs) have attracted a lot of interest, being an environmentally friendly material. The purpose of the present review paper is to provide a comprehensive overview of the ZNPs-loaded nanocomposites for food packaging applications, starting from the synthesis, characteristics and properties of ZNPs, to the physicochemical properties of the ZNPs-loaded nanocomposites, in terms of morphology, permeability, solubility, optical features, hydrophobic/hydrophilic behavior, structural characteristics, thermal features, and mechanical attributes. Finally, at the end of this review, some considerations about the safety issues and gastrointestinal fate of ZNPs, as well as the use of ZNPs-based nanocomposites as food packaging, are reported, taking into account that, despite the enormous benefits, nanotechnology also presents some risks associated to the use of nanometric materials.
Collapse
Affiliation(s)
- Farhad Garavand
- Department of Food Chemistry and Technology, Teagasc Moorepark Food Research Centre, Co. Cork, Ireland
| | - Diako Khodaei
- Department of Sport, Exercise, and Nutrition, Atlantic Technological University, Galway, Ireland
| | - Niaz Mahmud
- Food and Nutritional Sciences Program, North Carolina Agricultural and Technical State University, Greensboro, North Carolina, USA
| | - Joinul Islam
- Food and Nutritional Sciences Program, North Carolina Agricultural and Technical State University, Greensboro, North Carolina, USA
| | - Injeela Khan
- Food and Nutritional Sciences Program, North Carolina Agricultural and Technical State University, Greensboro, North Carolina, USA
| | - Shima Jafarzadeh
- School of Engineering, Edith Cowan University, Joondalup, Western Australia, Australia
| | - Reza Tahergorabi
- Food and Nutritional Sciences Program, North Carolina Agricultural and Technical State University, Greensboro, North Carolina, USA
| | - Ilaria Cacciotti
- Department of Engineering, INSTM RU, University of Rome 'Niccolò Cusano', Rome, Italy
| |
Collapse
|
5
|
Anik MI, Mahmud N, Masud AA, Khan MI, Islam MN, Uddin S, Hossain MK. Role of Reactive Oxygen Species in Aging and Age-Related Diseases: A Review. ACS Appl Bio Mater 2022; 5:4028-4054. [PMID: 36043942 DOI: 10.1021/acsabm.2c00411] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Research on the role of reactive oxygen species (ROS) in the aging process has advanced significantly over the last two decades. In light of recent findings, ROS takes part in the aging process of cells along with contributing to various physiological signaling pathways. Antioxidants being cells' natural defense mechanism against ROS-mediated alteration, play an imperative role to maintain intracellular ROS homeostasis. Although the complete understanding of the ROS regulated aging process is yet to be fully comprehended, current insights into various sources of cellular ROS and their correlation with the aging process and age-related diseases are portrayed in this review. In addition, results on the effect of antioxidants on ROS homeostasis and the aging process as well as their advances in clinical trials are also discussed in detail. The future perspective in ROS-antioxidant dynamics on antiaging research is also marshaled to provide future directions for ROS-mediated antiaging research fields.
Collapse
Affiliation(s)
- Muzahidul I Anik
- Department of Chemical Engineering, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Niaz Mahmud
- Department of Biomedical Engineering, Military Institute of Science and Technology, Dhaka 1216, Bangladesh
| | - Abdullah Al Masud
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
| | - Md Ishak Khan
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Md Nurul Islam
- Department of Bioregulatory Sciences, Faculty of Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
| | - Shihab Uddin
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - M Khalid Hossain
- Institute of Electronics, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Dhaka 1349, Bangladesh
- Interdisciplinary Graduate School of Engineering Science, Kyushu University, Fukuoka 816-8580, Japan
| |
Collapse
|
6
|
Al Noman A, Ekra JE, Meem RI, Islam S, Sharzana F, Islam S, Sana S, Kabir M, Mahmud N, Al Mahedi A, Joarder T. The COVID-19 Pandemic in South Asia: A Comprehensive Review of the Genomic Variations, Epidemiological Features, Diagnosis, Treatment and Preventive Schemes. Journal of Health Research 2022. [DOI: 10.56808/2586-940x.1018] [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: 01/20/2023] Open
|
7
|
Mahmud N, Anik MI, Hossain MK, Khan MI, Uddin S, Ashrafuzzaman M, Rahaman MM. Advances in Nanomaterial-Based Platforms to Combat COVID-19: Diagnostics, Preventions, Therapeutics, and Vaccine Developments. ACS Appl Bio Mater 2022; 5:2431-2460. [PMID: 35583460 PMCID: PMC9128020 DOI: 10.1021/acsabm.2c00123] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/24/2022] [Indexed: 12/12/2022]
Abstract
The COVID-19 pandemic caused by the SARS-CoV-2, a ribonucleic acid (RNA) virus that emerged less than two years ago but has caused nearly 6.1 million deaths to date. Recently developed variants of the SARS-CoV-2 virus have been shown to be more potent and expanded at a faster rate. Until now, there is no specific and effective treatment for SARS-CoV-2 in terms of reliable and sustainable recovery. Precaution, prevention, and vaccinations are the only ways to keep the pandemic situation under control. Medical and scientific professionals are now focusing on the repurposing of previous technology and trying to develop more fruitful methodologies to detect the presence of viruses, treat the patients, precautionary items, and vaccine developments. Nanomedicine or nanobased platforms can play a crucial role in these fronts. Researchers are working on many effective approaches by nanosized particles to combat SARS-CoV-2. The role of a nanobased platform to combat SARS-CoV-2 is extremely diverse (i.e., mark to personal protective suit, rapid diagnostic tool to targeted treatment, and vaccine developments). Although there are many theoretical possibilities of a nanobased platform to combat SARS-CoV-2, until now there is an inadequate number of research targeting SARS-CoV-2 to explore such scenarios. This unique mini-review aims to compile and elaborate on the recent advances of nanobased approaches from prevention, diagnostics, treatment to vaccine developments against SARS-CoV-2, and associated challenges.
Collapse
Affiliation(s)
- Niaz Mahmud
- Department of Biomedical Engineering,
Military Institute of Science and Technology, Dhaka 1216,
Bangladesh
| | - Muzahidul I. Anik
- Department of Chemical Engineering,
University of Rhode Island, Kingston, Rhode Island 02881,
United States
| | - M. Khalid Hossain
- Interdisciplinary Graduate School of Engineering
Science, Kyushu University, Fukuoka 816-8580,
Japan
- Atomic Energy Research Establishment,
Bangladesh Atomic Energy Commission, Dhaka 1349,
Bangladesh
| | - Md Ishak Khan
- Department of Neurosurgery, University of
Pennsylvania, Philadelphia, Pennsylvania 19104, United
States
| | - Shihab Uddin
- Department of Applied Chemistry, Graduate School of
Engineering, Kyushu University, Fukuoka 819-0395,
Japan
- Department of Chemical Engineering,
Massachusetts Institute of Technology, Cambridge
Massachusetts 02139, United States
| | - Md. Ashrafuzzaman
- Department of Biomedical Engineering,
Military Institute of Science and Technology, Dhaka 1216,
Bangladesh
| | - Md Mushfiqur Rahaman
- Department of Emergency Medicine, NYU
Langone Health, New York, New York 10016, United
States
| |
Collapse
|
8
|
YUSUF K, Albaar A, Ramadhan S, Mahmud N, Kasim H, Rasyid H, Bakri S, Bakri S, Syahrir S. POS-160 URETERAL STRICTURE CAUSED BY TUBERCULOUS URETERITIS: A CASE REPORT. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.173] [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: 11/29/2022] Open
|
9
|
FITRIANI N, Albaar A, Mahmud N, Zatalia S, Kasim H, Rasyid H, Bakri S. POS-011 ACUTE KIDNEY INJURY (AKI) DUE TO SEPSIS ON POST MITRAL VALVE REPLACEMENT SURGERY: A CASE REPORT. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.019] [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: 11/29/2022] Open
|
10
|
Affiliation(s)
- Muzahidul I. Anik
- Department of Chemical Engineering University of Rhode Island South Kingstown Rhode Island USA
| | - Niaz Mahmud
- Department of Biomedical Engineering Military Institute of Science and Technology Dhaka Bangladesh
| | - Abdullah Al Masud
- Department of Chemical Engineering Bangladesh University of Engineering and Technology Dhaka Bangladesh
| | - Maruf Hasan
- Department of Biomedical Engineering Military Institute of Science and Technology Dhaka Bangladesh
| |
Collapse
|
11
|
Ahmmed MS, Shuvo SD, Paul DK, Karim MR, Kamruzzaman M, Mahmud N, Ferdaus MJ, Elahi MT. Prevalence of dyslipidemia and associated risk factors among newly diagnosed Type-2 Diabetes Mellitus (T2DM) patients in Kushtia, Bangladesh. PLOS Glob Public Health 2021; 1:e0000003. [PMID: 36962092 PMCID: PMC10021199 DOI: 10.1371/journal.pgph.0000003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 11/15/2021] [Indexed: 12/29/2022]
Abstract
Dyslipidemia is considered a significant modifiable risk factor for type-2 diabetes mellitus (T2DM) and has become one of the emerging health problems throughout the world. In Bangladesh, data on dyslipidemia among newly diagnosed T2DM patients are comparatively inadequate. This study aimed to evaluate the prevalence of dyslipidemia and its associated risk factors in newly diagnosed T2DM patients. This cross-sectional study was conducted by a well-structured questionnaire from 132 newly diagnosed type-2 diabetic patients attending the Mujibur Rahman Memorial Diabetic Hospital in Kushtia, Bangladesh. Data regarding socio-demographic, anthropometric, fasting blood glucose, total cholesterol (TC), triglyceride (TG), high-density lipoprotein (HDL), and low-density lipoprotein (LDL) were collected from all the respondents. The association between dyslipidemia and its associated factors was analyzed using the multivariate logit regression model. The findings suggest that the prevalence rate of dyslipidemia was 75.7% in female and 72.6% in male T2DM patients. The odds of having dyslipidemia were 1.74 (95% Cl: 1.58-1.87) times significantly higher in female (p<0.001). The other factors associated with dyslipidemia encompassed age between 30-39 years (OR: 2.32, 95% CI: 1.97-2.69), obesity (OR: 2.63, 95% CI: 2.27-2.90), waist circumferences of male ≥90 and female ≥80 (OR: 1.65, 95% CI: 1.59-1.89), hypertensive patients (OR: 1.51, 95% CI: 1.45-1.74), physically inactive (OR: 3.25, 95% CI: 1.84-4.68), and current smoker or tobacco user (OR: 1.93, 95% CI: 1.85-2.13). This study concluded that the high prevalence of dyslipidemia was found among newly diagnosed type-2 diabetes patients and associated with gender, age, BMI, waist circumference, poor physical activity, and smoking, or tobacco use. This result will support increase awareness of dyslipidemia and its associated risk factors among type-2 diabetes patients.
Collapse
Affiliation(s)
- Md Saad Ahmmed
- Bangladesh Institute of Research and Training on Applied Nutrition (BIRTAN), Jhenaidah, Bangladesh
| | - Suvasish Das Shuvo
- Department of Nutrition and Food Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Dipak Kumar Paul
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, Bangladesh
| | - M R Karim
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, Bangladesh
| | - Md Kamruzzaman
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, Bangladesh
| | - Niaz Mahmud
- Department of Nutrition and Food Technology, Jashore University of Science and Technology, Jashore, Bangladesh
- Food and Nutritional Sciences Program, North Carolina Agricultural and Technical State University, Greensboro, NC, United States of America
| | - Md Jannatul Ferdaus
- Department of Nutrition and Food Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Md Toufiq Elahi
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, Bangladesh
| |
Collapse
|
12
|
Chauhdary WA, Rubel AR, Bashir A, Soe ZN, Mahmud N, Hla Aye MT, Javed N, Mani BI, Chong VH. Acute filarial fever. QJM 2020; 113:756. [PMID: 32053196 DOI: 10.1093/qjmed/hcaa024] [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: 11/12/2022] Open
Affiliation(s)
- W A Chauhdary
- Department of Medicine, Pengiran Muda Mahkota Haji Al-Mutadee Billah Hospital, Jalan Sungai Basong, Tutong, Brunei Darussalam
| | - A R Rubel
- Department of Medicine, Pengiran Muda Mahkota Haji Al-Mutadee Billah Hospital, Jalan Sungai Basong, Tutong, Brunei Darussalam
| | - A Bashir
- Department of Medicine, Pengiran Muda Mahkota Haji Al-Mutadee Billah Hospital, Jalan Sungai Basong, Tutong, Brunei Darussalam
| | - Z N Soe
- Department of Medicine, Pengiran Muda Mahkota Haji Al-Mutadee Billah Hospital, Jalan Sungai Basong, Tutong, Brunei Darussalam
| | - N Mahmud
- Department of Laboratory, Pengiran Muda Mahkota Haji Al-Mutadee Billah Hospital, Jalan Sungai Basong, Tutong, Brunei Darussalam
| | - M T Hla Aye
- Department of Medicine, Pengiran Muda Mahkota Haji Al-Mutadee Billah Hospital, Jalan Sungai Basong, Tutong, Brunei Darussalam
| | - N Javed
- Department of Medicine, Pengiran Muda Mahkota Haji Al-Mutadee Billah Hospital, Jalan Sungai Basong, Tutong, Brunei Darussalam
| | - B I Mani
- Department of Medicine, Pengiran Muda Mahkota Haji Al-Mutadee Billah Hospital, Jalan Sungai Basong, Tutong, Brunei Darussalam
| | - V H Chong
- Department of Medicine, Pengiran Muda Mahkota Haji Al-Mutadee Billah Hospital, Jalan Sungai Basong, Tutong, Brunei Darussalam
| |
Collapse
|
13
|
Lin Y, Park Y, Khanal A, Patel P, Campbell-Lee S, Liu L, Vidanovic V, Sweiss K, Peace D, Rondelli D, Mahmud N. Can high volume leukapheresis substitute plerixafor to yield an optimal dose of CD34+ vells from poor mobilizers? Cytotherapy 2019. [DOI: 10.1016/j.jcyt.2019.03.442] [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: 11/28/2022]
|
14
|
Mahmud N, Islam M, Shovon Al-Fuad M, Sana S, Jannatul Ferdaus M, Ahmed S, Islam Satya S, Abdullah Al Mamun M, Sakib N, Shofiqul Islam M, Kangsha Bonik S. Estimation of Heavy Metals, Essential Trace Elements and Anti-Nutritional Factors in Leaves and Stems from <i>Moringa oleifera</i>. ACTA ACUST UNITED AC 2019. [DOI: 10.11648/j.ijfsb.20190402.14] [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: 11/12/2022]
|
15
|
Reza N, Mahmud N, Molina M, McLean R, Goldberg L, Acker M, Bermudez C, Owens A. Model for End-Stage Liver Disease (MELD) Stratification Identifies Two Distinct Cohorts of Arrhythmogenic Right Ventricular Cardiomyopathy Patients Undergoing Transplantation. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.856] [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: 11/25/2022] Open
|
16
|
Amran HS, Aziz MA, George E, Mahmud N, Lee TY, Md Noor S. Secondary polycythaemia in a Malay girl with homozygous Hb Tak. Malays J Pathol 2017; 39:321-326. [PMID: 29279598] [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: 06/07/2023]
Abstract
Hb Tak is one of more than 200 high affinity haemoglobin variants reported worldwide. It results from the insertion of two nucleotides (AC) at the termination codon, between codon 146 and codon 147 of the beta-globin gene [Beta 147 (+AC)]. Polycythaemia is the main clinical feature although affected carriers are usually asymptomatic and do not require intervention. Several case studies in this region have reported the co-inheritance of Hb Tak with Hb E, delta beta and beta thalassaemia with one case of homozygous Hb Tak in a Thai boy. In this case report, a cluster of haemoglobin Tak was found in a family of Malay ethnic origin. Cascade family screening was conducted while investigating a 4-year old girl who presented with symptomatic polycythaemia. She had 2 previous Hb analysis done, at 7-month and 2-year-old with the diagnosis of possible Hb Q Thailand and Homozygous Hb D, respectively. Both diagnosis did not fit her clinical presentations. She was plethoric, had reduced exercise tolerance as well as cardiomyopathy. Her parents were consanguineously married and later diagnosed as asymptomatic carriers of Hb Tak. Consequently, re-analysis of the girl's blood sample revealed a homozygous state of Hb Tak. In conclusion, high oxygen affinity haemoglobin like Hb Tak should be considered in the investigation of polycythaemic patients with abnormal Hb analyses. In this case, DNA analysis was crucial in determining the correct diagnosis.
Collapse
Affiliation(s)
- H S Amran
- Hospital Kuala Lumpur, Pathology Department, Kuala Lumpur, Malaysia.
| | | | | | | | | | | |
Collapse
|
17
|
Affiliation(s)
- I Khan
- Division of Hematology/Oncology, University of Illinois, Chicago, IL, USA
| | - M Halasi
- Division of Gastroenterology/Hepatology, Department of Medicine,University of Illinois, Chicago, IL, USA
| | - M F Zia
- Division of Hematology/Oncology, University of Illinois, Chicago, IL, USA
| | - P Gann
- Division of Research Histology and Tissue Imaging Core, University of Illinois, Chicago, IL, USA
| | - S Gaitonde
- Division of Research Histology and Tissue Imaging Core, University of Illinois, Chicago, IL, USA
| | - N Mahmud
- Division of Hematology/Oncology, University of Illinois, Chicago, IL, USA
| | - A L Gartel
- Division of Gastroenterology/Hepatology, Department of Medicine,University of Illinois, Chicago, IL, USA
| |
Collapse
|
18
|
Holleran G, Hall B, Alhinai M, Zaheer A, Leen R, Alakkari A, Mahmud N, McNamara D. Double-balloon enteroscopy in Ireland in the capsule endoscopy era. Ir J Med Sci 2014; 184:257-62. [PMID: 24633527 DOI: 10.1007/s11845-014-1097-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 02/26/2014] [Indexed: 12/14/2022]
Abstract
BACKGROUND The availability of double-balloon enteroscopy (DBE) and small bowel capsule endoscopy (SBCE) in Ireland has revolutionised our approach to the diagnosis and treatment of small bowel disorders. AIMS To evaluate the use of DBE in Ireland and to compare the diagnostic yield with and without prior SBCE in order to improve the efficiency of our resources for small bowel endoscopy. METHODS A retrospective comparison study of all DBEs performed between two centres, one with SBCE available, was undertaken. Information was obtained by review of endoscopy reports, referral letters, radiology reports and charts. A review of the SBCE database was undertaken to identify patients who had undergone SBCE prior to DBE. RESULTS A total of 242 DBE procedures were carried out between both centres. SBCE was performed prior to DBE in 20 % (n = 46). The overall diagnostic yield of DBE was 47 % (n = 115). There was a statistically significant difference in diagnostic yield between the DBE only and the DBE with prior SBCE groups 44 versus 61 %, respectively, p < 0.0001. There was also a significant difference in the DBE approach, with 73 % of procedures being anterograde in centre 1 versus 56 % in centre 2. A subgroup analysis of centre 1 data revealed a negative predictive value of 100 % and a positive predictive value of 74 % for SBCE when DBE findings were considered as a gold standard. CONCLUSION SBCE as a screening tool prior to DBE is extremely valuable and increases the diagnostic yield considerably as a consequence of a high negative predictive value.
Collapse
Affiliation(s)
- G Holleran
- Department of Gastroenterology, Adelaide and Meath Hospital, Tallaght, Dublin 24, Ireland,
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Leongamornlert D, Mahmud N, Tymrakiewicz M, Saunders E, Dadaev T, Castro E, Goh C, Govindasami K, Guy M, O'Brien L, Sawyer E, Hall A, Wilkinson R, Easton D, Goldgar D, Eeles R, Kote-Jarai Z. Germline BRCA1 mutations increase prostate cancer risk. Br J Cancer 2012; 106:1697-701. [PMID: 22516946 PMCID: PMC3349179 DOI: 10.1038/bjc.2012.146] [Citation(s) in RCA: 208] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 02/24/2012] [Accepted: 03/25/2012] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Prostate cancer (PrCa) is one of the most common cancers affecting men but its aetiology is poorly understood. Family history of PrCa, particularly at a young age, is a strong risk factor. There have been previous reports of increased PrCa risk in male BRCA1 mutation carriers in female breast cancer families, but there is a controversy as to whether this risk is substantiated. We sought to evaluate the role of germline BRCA1 mutations in PrCa predisposition by performing a candidate gene study in a large UK population sample set. METHODS We screened 913 cases aged 36–86 years for germline BRCA1 mutation, with the study enriched for cases with an early age of onset. We analysed the entire coding region of the BRCA1 gene using Sanger sequencing. Multiplex ligation-dependent probe amplification was also used to assess the frequency of large rearrangements in 460 cases. RESULTS We identified 4 deleterious mutations and 45 unclassified variants (UV). The frequency of deleterious BRCA1 mutation in this study is 0.45%; three of the mutation carriers were affected at age 65 years and one developed PrCa at 69 years. Using previously estimated population carrier frequencies, deleterious BRCA1 mutations confer a relative risk of PrCa of ~3.75-fold, (95% confidence interval 1.02–9.6) translating to a 8.6% cumulative risk by age 65. CONCLUSION This study shows evidence for an increased risk of PrCa in men who harbour germline mutations in BRCA1. This could have a significant impact on possible screening strategies and targeted treatments.
Collapse
Affiliation(s)
- D Leongamornlert
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - N Mahmud
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - M Tymrakiewicz
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - E Saunders
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - T Dadaev
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - E Castro
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - C Goh
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - K Govindasami
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - M Guy
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - L O'Brien
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - E Sawyer
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - A Hall
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - R Wilkinson
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| | - D Easton
- Centre for Cancer Genetic
Epidemiology, Department of Public Health and Primary Care, Strangeways
Laboratory, Cambridge
CB1 8RN, UK
| | - The UKGPCS Collaborators5
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
- Centre for Cancer Genetic
Epidemiology, Department of Public Health and Primary Care, Strangeways
Laboratory, Cambridge
CB1 8RN, UK
- Department of Dermatology, University
of Utah, Salt Lake City, UT
84132, USA
- The Royal Marsden NHS Foundation
Trust, Sutton
SM2 5NG, UK
| | - D Goldgar
- Department of Dermatology, University
of Utah, Salt Lake City, UT
84132, USA
| | - R Eeles
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
- The Royal Marsden NHS Foundation
Trust, Sutton
SM2 5NG, UK
| | - Z Kote-Jarai
- Oncogenetics Team, The Institute of
Cancer Research, Sutton
SM2 5NG, UK
| |
Collapse
|
20
|
Mahmud D, Nicolini B, Mahmud N, Patel P, Arpinati M, Rondelli D. In-Vivo Model of Human Allogeneic Stem Cell Rejection in NSG Mice. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.329] [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: 11/27/2022]
|
21
|
Saraf S, Patel P, Ozer H, Peace D, Quigley J, Mahmud N, Rondelli D. Improved Outcome of African American Multiple Myeloma Patients with Novel Agents and Autologous Stem Cell Transplant. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.238] [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: 10/14/2022]
|
22
|
Mahmud N, Schonstein E, Schaafsma F, Lehtola M, Fassier JB, Reneman MF, Verbeek J. [Pre-employment examinations for preventing occupational injury and disease in workers]. Arch Prev Riesgos Labor 2012; 15:29. [PMID: 24868592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
|
23
|
Castro E, Goh CL, Olmos D, Leongamornlert D, Saunders E, Tymrakiewicz M, Mahmud N, Dadaev T, Govindasami K, Guy M, OBrien L, Sawyer E, Hall A, Wilkinson R, Kote-Jarai Z, Eeles RA. Correlation of germ-line BRCA2 mutations with aggressive prostate cancer and outcome. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.1517] [Citation(s) in RCA: 2] [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: 11/20/2022] Open
|
24
|
Hamdan JS, Saghir F, Benya R, Chan A, Blunier A, Dunham L, Guzman G, Mahmud N. An evaluation of CD133 as a biomarker for malignant transformation of colon polyps. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14045] [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: 11/20/2022] Open
|
25
|
Kote-Jarai Z, Amin Al Olama A, Leongamornlert D, Tymrakiewicz M, Saunders E, Guy M, Giles GG, Severi G, Southey M, Hopper JL, Sit KC, Harris JM, Batra J, Spurdle AB, Clements JA, Hamdy F, Neal D, Donovan J, Muir K, Pharoah PDP, Chanock SJ, Brown N, Benlloch S, Castro E, Mahmud N, O'Brien L, Hall A, Sawyer E, Wilkinson R, Easton DF, Eeles RA. Identification of a novel prostate cancer susceptibility variant in the KLK3 gene transcript. Hum Genet 2011; 129:687-94. [PMID: 21465221 PMCID: PMC3092928 DOI: 10.1007/s00439-011-0981-1] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Accepted: 03/14/2011] [Indexed: 11/29/2022]
Abstract
Genome-wide association studies (GWAS) have identified more than 30 prostate cancer (PrCa) susceptibility loci. One of these (rs2735839) is located close to a plausible candidate susceptibility gene, KLK3, which encodes prostate-specific antigen (PSA). PSA is widely used as a biomarker for PrCa detection and disease monitoring. To refine the association between PrCa and variants in this region, we used genotyping data from a two-stage GWAS using samples from the UK and Australia, and the Cancer Genetic Markers of Susceptibility (CGEMS) study. Genotypes were imputed for 197 and 312 single nucleotide polymorphisms (SNPs) from HapMap2 and the 1000 Genome Project, respectively. The most significant association with PrCa was with a previously unidentified SNP, rs17632542 (combined P = 3.9 × 10−22). This association was confirmed by direct genotyping in three stages of the UK/Australian GWAS, involving 10,405 cases and 10,681 controls (combined P = 1.9 × 10−34). rs17632542 is also shown to be associated with PSA levels and it is a non-synonymous coding SNP (Ile179Thr) in KLK3. Using molecular dynamic simulation, we showed evidence that this variant has the potential to introduce alterations in the protein or affect RNA splicing. We propose that rs17632542 may directly influence PrCa risk.
Collapse
Affiliation(s)
- Z Kote-Jarai
- The Institute of Cancer Research, Sutton, Surrey SM2 5NG, UK.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Jahan S, Das TR, Mahmud N, Mondol SK, Habib SH, Saha S, Yasmin S, Joarder M. A comparative study among laparoscopically assisted vaginal hysterectomy, vaginal hysterectomy and abdominal hysterectomy: Experience in a tertiary care hospital in Bangladesh. J OBSTET GYNAECOL 2011; 31:254-7. [DOI: 10.3109/01443615.2010.550346] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
27
|
Jensen RL, Gilliespie D, Ajewung N, Faure R, Kamnasaran D, Ajewung N, Poirier D, Kamnasaran D, Tamura K, Wakimoto H, Rabkin SD, Martuza RL, Shah K, Hashizume R, Aoki Y, Serwer LP, Drummond D, Noble C, Park J, Bankiewicz K, James DC, Gupta N, Agerholm-Larsen B, Iversen HK, Jensen KS, Moller J, Ibsen P, Mahmood F, Gehl J, Corem E, Ram Z, Daniels D, Last D, Shneor R, Salomon S, Perlstein B, Margel S, Mardor Y, Charest G, Fortin D, Mathieu D, Sanche L, Paquette B, Li HF, Hashizume R, Aoki Y, Hariono S, Dasgupta T, Kim JS, Haas-Kogan D, Weiss WA, Gupta N, James CD, Waldman T, Nicolaides T, Ozawa T, Rao S, Sun H, Ng C, De La Torre J, Santos R, Prados M, James CD, Butowski N, Michaud K, Solomon DA, Li HF, Kim JS, Prados MD, Ozawa T, Waldman T, James CD, Pandya H, Gibo D, Debinski W, Vinchon-Petit S, Jarnet D, Jadaud E, Feuvret L, Garcion E, Menei P, Chen R, Yu JC, Liu C, Jaffer ZM, Chabala JC, Winssinger N, Rubenstein AE, Emdad L, Kothari H, Qadeer Z, Binello E, Germano I, Hirschberg H, Baek SK, Kwon YJ, Sun CH, Li SC, Madsen S, Debinski W, Liu T, Wang SW, Gibo DM, Fan QW, Cheng C, Hackett C, Feldman M, Houseman BT, Houseman BT, Nicolaides T, James CD, Haas-Kogan D, Oakes SA, Debnath J, Shokat KM, Weiss WA, Sai K, Chen F, Qiu Z, Mou Y, Zhang X, Yang Q, Chen Z, Patel TR, Zhou J, Piepmeier JM, Saltzman WM, Banerjee S, Kaul A, Gianino SM, Christians U, Gutmann DH, Wu J, Shen R, Puduvalli V, Koul D, Alfred Yung WK, Yun J, Sonabend A, Stuart M, Yanagihara T, Dashnaw S, Brown T, McCormick P, Romanov A, Sebastian M, Canoll P, Bruce JN, Piao L, Joshi K, Lee RJ, Nakano I, Madsen SJ, Chou CC, Blickenstaff JW, Sun CH, Zhou YH, Hirschberg H, Tome CML, Wykosky J, Palma E, Debinski W, Nduom E, Machaidze R, Kaluzova M, Wang Y, Nie S, Hadjipanayis C, Saito R, Nakamura T, Sonoda Y, Kumabe T, Tominaga T, Lun X, Zemp F, Zhou H, Stechishin O, Kelly JJ, Weiss S, Hamilton MG, Cairncross G, Rabinovich BA, Bell J, McFadden G, Senger DL, Forsyth PA, Kang P, Jane EP, Premkumar DR, Pollack IF, Yoo JY, Haseley A, Bratasz A, Powell K, Chiocca EA, Kaur B, Johns TG, Ferruzzi P, Mennillo F, De Rosa A, Rossi M, Giordano C, Magrini R, Benedetti G, Pericot GL, Magnoni L, Mori E, Thomas R, Tunici P, Bakker A, Yoo JY, Pradarelli J, Kaka A, Alvarez-Breckenridge C, Pan Q, Teknos T, Chiocca EA, Kaur B, Cen L, Ostrem JL, Schroeder MA, Mladek AC, Fink SR, Jenkins RB, Sarkaria JN, Madhankumar AB, Slagle-Webb B, Park A, Pang M, Klinger M, Harbaugh KS, Sheehan JM, Connor JR, Chen TC, Wang W, Hofman FM, Serwer LP, Michaud K, Drummond DC, Noble CO, Park JW, Ozawa T, James CD, Serwer LP, Noble CO, Michaud K, Drummond DC, Ozawa T, Zhou Y, Marks JD, Bankiewicz K, Park JW, James CD, Alonso MM, Gomez-Manzano C, Cortes-Santiago N, Roche FP, Fueyo J, Johannessen TCA, Grudic A, Tysnes BB, Nigro J, Bjerkvig R, Joshi AD, Parsons W, Velculescu VE, Riggins GJ, Bindra RS, Jasin M, Powell SN, Fu J, Koul D, Shen RJ, Colman H, Lang FF, Jensen MR, Alfred Yung WK, Friedman GK, Haas M, Cassady KA, Gillespie GY, Nguyen V, Murphy LT, Beauchamp AS, Hollingsworth CK, Debinski W, Mintz A, Pandya H, Garg S, Gibo D, Kridel S, Debinski W, Conrad CA, Madden T, Ji Y, Colman H, Priebe W, Seleverstov O, Purow BW, Grant GA, Wilson C, Campbell M, Humphries P, Li S, Li J, Johnson A, Bigner D, Dewhirst M, Sarkaria JN, Cen L, Pokorny JL, Mladek AC, Kitange GJ, Schroeder MA, Carlson BL, Suphangul M, Petro B, Mukhtar L, Baig MS, Villano J, Mahmud N, Keir ST, Reardon DA, Watson M, Shore GC, Bigner DD, Friedman HS, Keir ST, Gururangan S, Reardon DA, Bigner DD, Friedman HS. Pre-clinical Experimental Therapeutics and Pharmacology. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s13] [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: 11/13/2022] Open
|
28
|
Prichard D, Jamal S, Fortune A, O'Briain DS, Mahmud N. Enteropathy associated T-cell lymphoma resulting in restrictive cardiomyopathy and mimicking myocardial infarction. BMJ Case Rep 2010; 2010:2010/aug24_1/bcr1020092336. [PMID: 22767479 DOI: 10.1136/bcr.10.2009.2336] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
A 64-year-old woman was referred with a short history of abdominal pain, anorexia and weight loss. Investigations revealed a probable enteropathy associated T-cell lymphoma (EATL). Further investigations revealed evidence of what appeared to be a myocardial infarction. After going through laparoscopy to obtain diagnostic tissue, the patient developed cardiogenic shock which proved refractory to medical therapy. Postmortem examination revealed diffuse abdominal lymphoma consistent with EATL. Surprisingly, there was extensive infiltration of the myocardium. This report demonstrates an unusual pathology resulting from EATL and discusses the limited evidence relating to cardiac involvement of this disease.
Collapse
Affiliation(s)
- D Prichard
- Department of Gastroenterology, St James's Hospital, Dublin, Ireland
| | | | | | | | | |
Collapse
|
29
|
Nicolini B, Mahmud D, Mahmud N, Nucifora G, Rondelli D. An in-vivo Model Of Human T Cell-Mediated Rejection Of Allogeneic Mismatched Hematopoietic CD34+Stem Cells Using NOD/SCID γnull (NOG) Mice. Biol Blood Marrow Transplant 2010. [DOI: 10.1016/j.bbmt.2009.12.467] [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: 11/28/2022]
|
30
|
Prichard D, Zaheer A, Ravi N, Reynolds J, Mahmud N. A "stitch in time". Gut 2009; 58:1341, 1418. [PMID: 19749137 DOI: 10.1136/gut.2008.169508] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- D Prichard
- Department of Clinical Medicine, Trinity College Dublin, Trinity Centre for Health Sciences, St James's Hospital, Dublin-8, Ireland
| | | | | | | | | |
Collapse
|
31
|
Beri R, Chunduri S, Sweiss K, Peace DJ, Mactal-Haaf C, Dobogai LC, Shord S, Quigley JG, Chen YH, Mahmud N, Rondelli D. Reliability of a pretransplant i.v. BU test dose performed 2 weeks before myeloablative FluBu conditioning regimen. Bone Marrow Transplant 2009; 45:249-53. [DOI: 10.1038/bmt.2009.133] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
32
|
Nimmagadda S, Sweiss K, Chunduri S, Beri R, Peace D, Quigley J, Dobogai L, Mahmud N, Rondelli D. Increased Mucositis in Patients Receiving Targeted Vs Non-Targeted IV Busulfan Prior to Allogeneic Stem Cell Transplantation. Biol Blood Marrow Transplant 2009. [DOI: 10.1016/j.bbmt.2008.12.344] [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: 10/21/2022]
|
33
|
Mahmud D, Chunduri S, Mahmud N, Van den Dries L, Maciejewski J, Rondelli D. 371: Co-transplantation of Human Tregs and CD34+ Cells: A Preclinical Study. Biol Blood Marrow Transplant 2008. [DOI: 10.1016/j.bbmt.2007.12.381] [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: 11/25/2022]
|
34
|
Kevans D, Farrell G, Hopkins S, Mahmud N, White B, Norris S, Bergin C. Haematological support during peg-interferon therapy for HCV-infected haemophiliacs improves virological outcomes. Haemophilia 2007; 13:593-8. [PMID: 17880449 DOI: 10.1111/j.1365-2516.2007.01489.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Hepatitis C virus-infected haemophiliacs are traditionally under represented in international treatment studies thus data assessing response to pegylated-interferon (peg-IFN) and ribavirin (RBV) in HCV mono-infected or HCV/HIV co-infected haemophiliacs are few. Since 2001, 37 haemophiliac patients have received peg-IFN and RBV according to centre-based investigator initiated protocols. Primary end points were: early virological response (EVR); end of treatment response (EOTR) and sustained virological response (SVR). An intention-to-treat analysis was used. Secondary end points were adverse events, haemopoietic stem cell growth factor use, therapy discontinuations and dose reductions. Hepatitis C virus mono-infection group (Mono-I) numbered 20 (60% genotype 1). HCV/HIV co-infected group (Co-I) numbered 17 (59% genotype 1/4). Primary end points were: EVR 76%, EOTR 70% and SVR 43%. Comparison of Mono-I to Co-I demonstrated: EVR rates of 70% and 82%, respectively; EOTR rates of 65% and 76%, respectively, and SVR rates of 35% and 53%, respectively. SVR rates genotype 1/4 group - 17% (Mono-I) vs. 30% (Co-I); SVR rates genotype 2/3 group - 63% (Mono-I) vs. 86% (Co-I). Therapy discontinuations: six of 20 (30%) Mono-I vs. three of 17 (18%) Co-I. Dose reductions: two of 20 (10%) Mono-I vs. zero of 17 Co-I. Haematological support factor use: one of 20 (5%) Mono-I vs. four of 17 (23.5%) Co-I. Virological outcomes to peg-IFN and RBV in HCV-infected haemophiliacs are comparable to published data relating to other HCV-infected cohorts. Good virological outcomes can be achieved in HIV co-infected haemophiliacs particularly when growth factors are used to facilitate full dosing of peg-IFN and RBV.
Collapse
Affiliation(s)
- D Kevans
- Department of Hepatology, St James's Hospital, James's Street, Dublin 8, Ireland
| | | | | | | | | | | | | |
Collapse
|
35
|
Thomas A, Sinclair C, Mahmud N, Cullup T, Mellerio J, Harper J, Dale B, Turc-Carel C, Hohl D, McGrath J, Vahlquist A, Hellstrom-Pigg M, Ganemo A, Metcalfe K, Mein C, O’Toole E, Kelsell D. Novel and recurring ABCA12 mutations associated with harlequin ichthyosis: implications for prenatal diagnosis. Br J Dermatol 2007; 158:611-3. [DOI: 10.1111/j.1365-2133.2007.08277.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
36
|
Mahmood Z, Zaheer A, Ang YS, Mahmud N. Endocinch treatment for gastro-oesophageal reflux (GORD): retention of plications are essential to control GORD. Gut 2007; 56:1027; author reply 1027. [PMID: 17566040 PMCID: PMC1994387 DOI: 10.1136/gut.2007.122978] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
|
37
|
Chunduri S, Dobogai L, Peace D, Saunthararajah Y, Quigley J, Chen YH, Boccuni P, Hoffman R, Mahmud N, Beri R, Hurter E, Rondelli D. 230: Fludarabine/full dose I.V. busulfan conditioning regimen in allogeneic PBSC transplantation for high risk patients. Biol Blood Marrow Transplant 2007. [DOI: 10.1016/j.bbmt.2006.12.235] [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: 11/29/2022]
|
38
|
Chunduri S, Dobogai LC, Peace D, Saunthararajah Y, Chen HY, Mahmud N, Quigley J, Hoffman R, Jessop E, Beri R, Rondelli D. Comparable kinetics of myeloablation between fludarabine/full-dose busulfan and fludarabine/melphalan conditioning regimens in allogeneic peripheral blood stem cell transplantation. Bone Marrow Transplant 2006; 38:477-82. [PMID: 16980995 DOI: 10.1038/sj.bmt.1705480] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [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: 11/08/2022]
Abstract
Fludarabine was utilized in the conditioning regimen of 30 adult patients undergoing an allogeneic hematopoietic stem cell transplant. In 18 patients it was combined with full-dose busulfan (FluBu) as a myeloablative regimen and in 12 cases with melphalan (FluMel) as a reduced intensity conditioning (RIC) regimen. Patients in the FluBu group were younger than in the FluMel group (P=0.03). Of 30 patients, 24 received peripheral blood stem cells (PBSC) whereas six patients in the FluBu group received bone marrow cells. The hematological toxicity of each regimen was evaluated by analyzing the kinetics of the neutropenia induced by preparative regimens and the time to recovery of the absolute neutrophils count (ANC) and platelets post transplantation. In PBSC transplants, the median day of severe neutropenia (<500 ANC/microl) occurred on day +6 after the FluBu regimen and on day +3 after FluMel (P=ns), whereas both groups had a duration of severe neutropenia of 9 days and a comparable time for ANC and platelet engraftment. Extra-hematological toxicities were also comparable in the two groups. These findings suggest that the hematological and extra-hematological toxicities induced by fludarabine/full-dose i.v. busulfan are similar to those induced by a standard RIC regimen such as fludarabine/melphalan.
Collapse
Affiliation(s)
- S Chunduri
- Section of Hematology/Oncology, University of Illinois at Chicago, Chicago, IL 60607-7171, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Saraf S, Chen YH, Dobogai LC, Mahmud N, Peace D, Saunthararajah Y, Hoffman R, Chunduri S, Rondelli D. Prolonged responses after autologous stem cell transplantation in African-American patients with multiple myeloma. Bone Marrow Transplant 2006; 37:1099-102. [PMID: 16699527 DOI: 10.1038/sj.bmt.1705392] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [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: 11/08/2022]
Abstract
Multiple myeloma (MM) has a double incidence in African-American (AA) than in non-AA patients and previous studies have shown a higher mortality in the former patient population. Here, we retrospectively analyzed the results of autologous stem cell transplantation (ASCT) in 38 AA and 32 non-AA consecutive patients. The two groups were comparable at diagnosis for age, stage of the disease, cytogenetic abnormalities, beta(2) microglobulin and albumin blood levels, and plasma cell marrow infiltration. The rates of complete and partial response observed in AA and non-AA patients after induction chemotherapy (9 and 42 vs 13 and 33%) and at 2 months (31 and 25 vs 30 and 20%) following ASCT were similar. At 6 months after ASCT, a greater relapse rate was observed in non-AA patients (P=0.009). At a median follow-up of 26 months, AA patients had a greater event-free survival (P=0.02) than non-AA patients, whereas overall survival was comparable in the two groups. The initial finding that AA patients with MM, compared to non-AA patients, had more prolonged responses and comparable survival after ASCT suggests that intensified chemotherapy is equally effective in patients of various ethnicities.
Collapse
Affiliation(s)
- S Saraf
- Section of Hematology/Oncology, University of Illinois at Chicago, 900 South Ashland Avenue, Chicago, IL 60607, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Hoffman R, Hiroto A, Mahmud N. Use of chromatin modifying agents for ex vivo expansion of human umbilical cord blood stem cells. Biol Blood Marrow Transplant 2006. [DOI: 10.1016/j.bbmt.2005.11.403] [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: 11/24/2022]
|
41
|
Ciurea S, Beri R, Dobogai L, Chunduri S, Mahmud N, Rondelli D, Peace D. The use of blood conservation methods in addition to erythropoietin allows myeloablative allogeneic stem cell transplantation without the use of blood products. Bone Marrow Transplant 2005; 37:325-7. [PMID: 16314850 DOI: 10.1038/sj.bmt.1705223] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
42
|
Hallmeyer S, Perambakam S, Reddy S, Mahmud N, Sosman J, David P. A randomized trial of PSA-peptide based, specific active immunotherapy in HLA-A2+ patients with prostate cancer: Comparison of two different vaccination strategies. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.2519] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- S. Hallmeyer
- Univ of IL at Chicago, Chicago, IL; Vanderbilt Univ, Memphis, TN
| | - S. Perambakam
- Univ of IL at Chicago, Chicago, IL; Vanderbilt Univ, Memphis, TN
| | - S. Reddy
- Univ of IL at Chicago, Chicago, IL; Vanderbilt Univ, Memphis, TN
| | - N. Mahmud
- Univ of IL at Chicago, Chicago, IL; Vanderbilt Univ, Memphis, TN
| | - J. Sosman
- Univ of IL at Chicago, Chicago, IL; Vanderbilt Univ, Memphis, TN
| | - P. David
- Univ of IL at Chicago, Chicago, IL; Vanderbilt Univ, Memphis, TN
| |
Collapse
|
43
|
Feighery L, Collins C, Feighery C, Mahmud N, Coughlan G, Willoughby R, Jackson J. Anti-transglutaminase antibodies and the serological diagnosis of coeliac disease. Br J Biomed Sci 2003; 60:14-8. [PMID: 12680625 DOI: 10.1080/09674845.2003.11783671] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Tissue transglutaminase (tTG) has recently been identified as the antigenic target recognised by anti-endomysial antibodies in patients with coeliac disease. In this study, an enzyme-linked immunosorbent assay (ELISA) is used to measure IgA, IgG and IgM antibodies to tTG in patients with coeliac disease and a variety of other inflammatory disorders; and is compared to the standard immunofluorescence test used to detect endomysial antibodies (EMA). In the samples tested, 3% control sera (n=146), 83% EMA-positive sera (n=29), 9% patients with Graves' disease (n=94), 12% antimitochondrial antibody-positive sera (n=53), 11% rheumatoid arthritis patients (n=53) and 22% systemic lupus erythematosus (SLE) patients (n=46) were positive for anti-tTG antibodies. In contrast, none of the controls, 1% of patients with Graves' disease, 2% antimitochondrial antibody-positive sera, 2% rheumatoid arthritis patients and none of the SLE patients were positive for EMA. Measurement of IgG or IgM antibodies to tTG was much less reliable than IgA anti-tTG antibody for the serological diagnosis of coeliac disease. The addition of calcium to the coating buffer improved the assay characteristics of the anti-tTG ELISA. However, the IgA anti-tTG ELISA, with and without calcium, performed less well than the standard EMA test used for the serological diagnosis of coeliac disease. In particular, the anti-tTG ELISA gave a higher rate of non-specific positive reactions.
Collapse
Affiliation(s)
- L Feighery
- Department of Immunology, St. James's Hospital, Trinity College Dublin, Ireland
| | | | | | | | | | | | | |
Collapse
|
44
|
McGlynn AP, Wasson GR, O'Reilly S, McKelvey-Martin VJ, McNulty H, Strain JJ, McKerr G, Mullan F, Mahmud N, Scott J, Weir DG, Downes CS. Detection of replicative integrity in small colonic biopsies using the BrdUrd comet assay. Br J Cancer 2003; 88:895-901. [PMID: 12644827 PMCID: PMC2377088 DOI: 10.1038/sj.bjc.6600836] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The alkaline single-cell gel electrophoresis or comet assay is a relatively simple method of measuring DNA single-strand breaks and alkali-labile sites in individual cells. Previously, we have used a combination of this with bromodeoxyuridine labelling of DNA and immunolocalisation of the BrdUrd to show that DNA replicative integrity can be assessed in single cultured cells. This study demonstrates the application of the technique to single cells derived from small human colonic biopsies isolated at routine endoscopy. A high level of reproducibility within replicate comet slides and between comet slides prepared from various colonic sites within a single patient is shown. Preliminary results demonstrate that defects in replication can be detected in tumour and premalignant colonic tissue adjacent to the tumour, suggesting that alterations in replicative integrity are an early event in neoplasia, appearing in premalignant mucosal cells. This development deems the BrdUrd comet assay suitable as an ex vivo molecular end point that can be measured easily in tissue collected by biopsy at routine colonic endoscopy. Thus, the BrdUrd comet assay has the potential to facilitate trial investigations of diet- or environment-related factors that may affect replicative integrity in the colon and provides a novel biomarker for colon carcinogenesis.
Collapse
Affiliation(s)
- A P McGlynn
- Cancer and Ageing Research Group, School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, Northern Ireland, UK
| | - G R Wasson
- Cancer and Ageing Research Group, School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, Northern Ireland, UK
| | - S O'Reilly
- Department of Clinical Medicine, St James' Hospital, Dublin 8, Ireland
| | - V J McKelvey-Martin
- Cancer and Ageing Research Group, School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, Northern Ireland, UK
| | - H McNulty
- Cancer and Ageing Research Group, School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, Northern Ireland, UK
| | | | - G McKerr
- Cancer and Ageing Research Group, School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, Northern Ireland, UK
| | - F Mullan
- Causeway Trust, Coleraine, County Londonderry, Northern Ireland, UK
| | - N Mahmud
- Department of Clinical Medicine, St James' Hospital, Dublin 8, Ireland
| | - J Scott
- Department of Biochemistry, Trinity College, Dublin 2, Ireland
| | - D G Weir
- Department of Clinical Medicine, St James' Hospital, Dublin 8, Ireland
| | - C S Downes
- Cancer and Ageing Research Group, School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, Northern Ireland, UK
- Cancer and Ageing Research Group, School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, Northern Ireland, UK. E-mail:
| |
Collapse
|
45
|
Abstract
The data on thyroid volume measurements that determines prevalence of goitre in children is very important for public health consideration as the presence of goitre in children effectively reflects the status of iodine deficiency disorders (IDD) in the general population. Ultrasound is an excellent modality to evaluate thyroid size. Local experience in using a portable ultrasound machine to measure thyroid volume is presented. The thyroid anatomy and techniques of ultrasound assessment are highlighted. Proper training of public health doctors to perform thyroid gland ultrasonography is crucial to ensure that the thyroid volume data collected would be more accurate and reliable for the planning of health programmes to eliminate IDD in the particular areas.
Collapse
Affiliation(s)
- N Mahmud
- Department of Radiology, Hospital Universiti Kebangsaan Malaysia, Bandar Tun Razak 56000 Kuala Lumpur, Malaysia
| |
Collapse
|
46
|
Mahmud N, O'Toole D, O'Hare N, Freyne PJ, Weir DG, Kelleher D. Evaluation of renal function following treatment with 5-aminosalicylic acid derivatives in patients with ulcerative colitis. Aliment Pharmacol Ther 2002; 16:207-15. [PMID: 11860403 DOI: 10.1046/j.1365-2036.2002.01155.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [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: 12/15/2022]
Abstract
BACKGROUND A number of cases of nephrotoxicity have been reported in patients with inflammatory bowel disease taking oral 5-aminosalicylic acid (5-ASA). AIM To evaluate the effects of 9 months of therapy with mesalazine or olsalazine on renal function in patients with ulcerative colitis in remission. METHODS Forty patients with ulcerative colitis in complete remission for 6 months were randomized to either olsalazine (n=20) or mesalazine (n=20 for nine months). Thirty-six of the 40 patients were on prior salicylate therapy. Disease activity was the measure ofclinical efficacy and was assessed by the Harvey-Bradshaw Index (HBI). Laboratory efficacy measurements included glomerular filtration rate (GFR), microalbuminuria, urinary gluthathione S-transferase (GST) and serum C-reactive protein (CRP). Safety analysis consisted of documentation of adverse events and laboratory values. RESULTS There was no significant reduction in the GFR overall on therapy. The levels of GFR adjusted for baseline were similar in the two treatment groups after 3, 6 and 9 months. A significantly higher percentage of mesalazine-treated patients experienced drug related adverse events, all of a minor nature. The incidence of adverse events causing early withdrawal was similar in the two treatment groups. CONCLUSION Treatment with mesalazine or olsalazine for 9 months had no significant impact on GFR.
Collapse
Affiliation(s)
- N Mahmud
- Department of Clinical Medicine, Diagnostic Imaging, Trinity Centre for Health Sciences, Trinity College and St James's Hospital, Dublin-8, Ireland.
| | | | | | | | | | | |
Collapse
|
47
|
Dinan TG, Mahmud N, Rathore O, Thakore J, Scott LV, Carr E, Naesdal J, O'Morain CA, Keeling PW. A double-blind placebo-controlled study of buspirone-stimulated prolactin release in non-ulcer dyspepsia--are central serotoninergic responses enhanced? Aliment Pharmacol Ther 2001; 15:1613-8. [PMID: 11564001 DOI: 10.1046/j.1365-2036.2001.01090.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [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: 12/16/2022]
Abstract
BACKGROUND Dyspepsia is a common symptom for which an organic cause is found in only 40% of patients. When no cause is apparent and the dyspepsia is considered to be idiopathic, a diagnosis of non-ulcer dyspepsia is made. The pathophysiology of non-ulcer dyspepsia is poorly understood and numerous theories have been put forward, including a theory of enhanced central serotoninergic receptor sensitivity. AIM To determine the sensitivity of serotonin receptors in non-ulcer dyspepsia. METHODS Using a randomized, double-blind, placebo-controlled design, we compared buspirone (a serotonin type 1a partial agonist)-stimulated prolactin release in 50 patients and 59 healthy comparison subjects. Buspirone, 30 mg, or matching placebo was administered on two separate occasions and prolactin release over 180 min was monitored. Patients and healthy subjects received both treatments in random order, 1 week apart. RESULTS Overall, patients with non-ulcer dyspepsia had greater prolactin release in response to the buspirone challenge than the healthy comparison subjects, with differences most significant at 90 min following the challenge. Enhancement occurred in patients both with and without Helicobacter pylori infection. Female subjects, both patients and healthy volunteers, showed a greater response to buspirone than male subjects, and the augmentation of response observed in male and female patients was greater in females. CONCLUSIONS Patients with non-ulcer dyspepsia have enhanced central serotoninergic responses and such responses are independent of H. pylori infection. Blockade of such receptors might be an appropriate therapeutic strategy.
Collapse
Affiliation(s)
- T G Dinan
- Department of Pharmacology and Therapeutics, The Cork Clinic, University College Cork, Western Road, Cork, Ireland.
| | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Mahmud N, Kamm MA, Dupas JL, Jewell DP, O'Morain CA, Weir DG, Kelleher D. Olsalazine is not superior to placebo in maintaining remission of inactive Crohn's colitis and ileocolitis: a double blind, parallel, randomised, multicentre study. Gut 2001; 49:552-6. [PMID: 11559654 PMCID: PMC1728458 DOI: 10.1136/gut.49.4.552] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [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: 12/20/2022]
Abstract
BACKGROUND AND AIMS The benefit of 5-aminosalicylic acid therapy for maintenance of remission in Crohn's disease is controversial. The primary aim of this study was to evaluate the prophylactic properties of olsalazine in comparison with placebo for maintenance of remission in quiescent Crohn's colitis and/or ileocolitis. METHODS In this randomised, double blind, parallel group study of olsalazine versus placebo, 328 patients with quiescent Crohn's colitis and/or ileocolitis were recruited. Treatment consisted of olsalazine 2.0 g daily or placebo for 52 weeks. The primary end point of efficacy was relapse, as defined by the Crohn's disease activity index (CDAI) and by clinical relapse. Laboratory and clinical disease activity indicators were also measured. Safety analysis consisted of documentation of adverse events and laboratory values. RESULTS No differences in the frequency of termination due to relapse or time to termination due to relapse were noted between the two treatment groups (olsalazine 48.5% v placebo 45%) for either colitis or ileocolitis. The failure rate, defined as not completing the study, was significantly higher in olsalazine treated patients compared with placebo treated patients for the overall population (colitis and/or ileocolitis: olsalazine 65.4% v 53.9%; p=0.038). Similar failure rates were seen for patients with colitis. A significantly higher percentage of olsalazine treated patients experienced adverse gastrointestinal events. Drug attributed adverse events were reported more frequently in the olsalazine treated group with gastrointestinal symptoms being causally related to olsalazine treatment (olsalazine 40.7% v placebo 26.9%; p=0.010). Back pain was reported significantly more often by the placebo treated group. However, serious medical events did not differ between the two groups. Adverse events led to more early withdrawals in the olsalazine treated group than in the placebo treated group; thus average time in the study for patients in the olsalazine treatment group was significantly shorter than that of patients in the placebo group. CONCLUSIONS Patients treated with olsalazine were more likely to terminate their participation in the trial than those taking placebo. This difference was not related to relapse of disease, as measured by CDAI and clinical measures, but rather was due to the development of intolerable adverse medical events of a non-serious nature related to the gastrointestinal tract. The gastrointestinal related events in the olsalazine treated group may be due to the difference in gastrointestinal status at baseline which favoured the placebo treatment group.
Collapse
Affiliation(s)
- N Mahmud
- Department of Clinical Medicine, Trinity College, St James's Hospital, Dublin, Ireland.
| | | | | | | | | | | | | |
Collapse
|
49
|
Bartholomew A, Patil S, Mackay A, Nelson M, Buyaner D, Hardy W, Mosca J, Sturgeon C, Siatskas M, Mahmud N, Ferrer K, Deans R, Moseley A, Hoffman R, Devine SM. Baboon mesenchymal stem cells can be genetically modified to secrete human erythropoietin in vivo. Hum Gene Ther 2001; 12:1527-41. [PMID: 11506695 DOI: 10.1089/10430340152480258] [Citation(s) in RCA: 133] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Human mesenchymal stem cells (MSCs) are capable of differentiating into multiple mesenchymal lineages including chondrocytes, osteocytes, adipocytes, and marrow stromal cells. Using a nonhuman primate model, we evaluated nonhuman primate MSCs as targets for gene therapy. Baboon MSCs (bMSCs) cultured from bone marrow aspirates appeared as a homogeneous population of spindle-shaped cells. bMSCs were capable of differentiating into adipocytes and osteocytes in vitro and chondrocytes in vivo. bMSCs were genetically modified with a bicistronic vector encoding the human erythropoietin (hEPO) gene and the green fluorescent protein (GFP) gene. Transduction efficiencies ranged from 72 to 99% after incubation of MSCs with retroviral supernatant. Transduced cells produced from 1.83 x 10(5) to 7.12 x 10(5) mIU of hEPO per 10(6) cells per 24 hr in vitro before implantation. To determine the capacity of bMSCs to express hEPO in vivo, transduced bMSCs were injected intramuscularly in NOD/SCID mice. In a separate experiment, transduced bMSCs were loaded into immunoisolatory devices (IIDs) and surgically implanted into either autologous or allogeneic baboon recipients. Human EPO was detected in the serum of NOD/SCID mice for up to 28 days and in the serum of five baboons for between 9 and 137 days. NOD/SCID mice experienced sharp rises in hematocrit after intramuscular injection of hEPO-transduced bMSCs. The baboon that expressed hEPO for 137 days experienced a statistically significant (p < 0.04) rise in its hematocrit. These data demonstrate that nonhuman primate MSCs can be engineered to deliver a secreted and biologically active gene product. Therefore, human MSCs may be an effective target for future human gene therapy trials.
Collapse
Affiliation(s)
- A Bartholomew
- Department of Surgery, University of Illinois at Chicago, Chicago, IL 60612, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Farrell RJ, Noonan N, Mahmud N, Morrin MM, Kelleher D, Keeling PW. Potential impact of magnetic resonance cholangiopancreatography on endoscopic retrograde cholangiopancreatography workload and complication rate in patients referred because of abdominal pain. Endoscopy 2001; 33:668-75. [PMID: 11490382 DOI: 10.1055/s-2001-16218] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [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: 12/10/2022]
Abstract
BACKGROUND AND STUDY AIMS Endoscopic retrograde cholangiopancreatography (ERCP) has a significant mortality, morbidity, and failed cannulation rate. Magnetic resonance cholangiopancreatography (MRCP) is a safer, noninvasive method of imaging the pancreaticobiliary tree. A substantial number of patients are referred for ERCP because of abdominal pain, a high proportion of whom have normal ducts or pathology not requiring interventional ERCP. The aim was to assess the potential impact of MRCP on overall ERCP workload and patient outcome if MRCP were the primary investigation in patients referred for ERCP because of abdominal pain. PATIENTS AND METHODS 1758 consecutive ERCPs performed in 1148 patients over a 3-year period in a single tertiary referral center in the pre-MRCP era were reviewed. Cannulation failure, ERCP findings, need for follow-up ERCP and all 30-day major complication rates were analyzed with regard to clinical indications. RESULTS The overall workload comprised 1108 (63 %) successful initial ERCPs, 188 (11 %) failed cannulation attempts and 462 (26 %) follow-up ERCPs. Of the patients, 299 (27 %) had normal ERCP findings, 331 (30 %) had choledocholithiasis and 246 (22 %) had strictures. lf MRCP had been used as the primary imaging investigation in the 451 patients (39 %) referred for ERCP because of abdominal pain, we estimate that 197 patients (44 %) would have avoided ERCP, and the overall ERCP workload would have been reduced by 13 %. Initial MRCP in suspected gallstone pancreatitis and certain miscellaneous groups, it was estimated, would have further decreased ERCP workload by 9 %. Four of 40 major ERCP-related complications (3.5 %) and one of four ERCP-related deaths (0.35 %) would potentially have been avoided. CONCLUSIONS Initial MRCP in patients referred with abdominal pain would potentially have avoided ERCP in 44 % of cases, reduced ERCP workload by 13 % and significantly reduced patient morbidity and mortality. The relatively small reduction in ERCP workload among these patients reflects the fact that over half of them had probable sphincter dysfunction, a significant proportion of whom might have benefited from biliary manometry and/or endoscopic intervention despite a normal MRCP. Furthermore, a small number of patients with calculi and subtle biliary and pancreatic strictures would be missed by this approach.
Collapse
Affiliation(s)
- R J Farrell
- Dept. of Clinical Medicine, St James' Hospital, Trinity College, Dublin, Ireland.
| | | | | | | | | | | |
Collapse
|