1.Potato Virus Y mRNA Expression Knockdown Mediated by siRNAs in Cultured Mammalian Cell Line
Tabassum Bushra ; Nasir Ahmad Idrees ; Husnain Tayyab
Virologica Sinica 2011;26(2):105-113
RNA interference(RNAi)is a powerful tool for functional gene analysis which has been successfully used to downregulate the expression levels of target genes.The goal of this research was to provide a highly robust and concise methodology for in-vitro screening of efficient siRNAs from a bulk to be used as a tool to protect potato plants against PVY invasion.In our study,a 480bp fragment of the eapsid protein gene of potato virus Y(CP-PVY)was used as a target to downregulate PVY mRNA expression in-vitro,as the CP gene interferes with viral uncoating,translation and replication.A total of six siRNAs were designed and screened through transient transfection assay and knockdown in expression of CP-PVY mRNA was calculated in CHO-k cells.CP-PVY mRNA knockdown efficiency was analyzed by RT-PCR and real-time PCR of CHO-k cells co-transfected with a CP gene construct and siRNAs.Six biological replicates were performed in this study.In our findings,one CP gene specific siRNA out of a total of six was found to be the most effective for knockdown of CP-PVY mRNA in transfected CHO-k cells by up to 80%-90%.
2.Design specifications of ergonomic sofa through sofa makers perception: a case study in Malaysia
Ahmad Hafizi Bin Abdul Nasir ; Ahmad Rasdan Bin Ismail ; Khairul Azhar Mat Daud ; Suriatini Ismail
Malaysian Journal of Public Health Medicine 2016;16(Supplement 2):27-35
Development of ergonomic sofa design is a design process that has the basic framework specification and type of
material that is applied on the sofa design. This is due to human consumption that is closely related to ergonomic
design of this specification which will affect human physical. To achieve this goal, a survey involving 30 respondents
of sofa makers was conducted to get feedback regarding the sofa design specifications. Survey questions emphasize
on the basic specifications and material dimensions of sofa materials used. The results of data analysis show that the
size of basic dimensions and materials is essential in designing an ergonomic sofa. The survey is very important to
find out the basic specifications in the development of ergonomic design through perception of sofa maker.
3.Theophylline toxicity: A case report of the survival of an undiagnosed patient who presented to the emergency department
Nasir Mohamad ; Nurkhairul Nizam Abd Halim ; Rashidi Ahmad ; Kamarul Aryffin Baharuddin
Malaysian Journal of Medical Sciences 2009;16(2):33-37
Theophylline toxicity is a life-threatening toxidrome that can present to an emergency department.
To ascertain an immediate provisional diagnosis in toxicology at the emergency department is very
challenging, especially when the patient presents with altered mental status, because the clinical
features of several toxidromes overlap. We report a case of survival of undiagnosed theophylline
toxicity that required intubation for two days in the intensive care unit. This was the first case to have
been reported from our department. Accurate diagnosis of a toxidrome by gaining adequate history
and conducting a thorough physical examination and early serum toxicology screening, coupled with
good knowledge of toxicology, will lead to better patient outcomes.
4.Assessing Patient Pain Scores in the Emergency Department
Kamarul Aryffin Baharuddin ; Nasir Mohamad ; Nik Hisamuddin Nik Abdul Rahman ; Rashidi Ahmad ; Nik Ahmad Shaiffudin Nik Him
Malaysian Journal of Medical Sciences 2010;17(1):17-22
Background: Pain management in the Emergency Department is challenging. Do we need
to ask patients specifically about their pain scores, or does our observational scoring suffice? The
objective of this study was to determine the inter-rater differences in pain scores between patients
and emergency healthcare (EHC) providers. Pain scores upon discharge or prior to ward admission
were also determined.
Methods: A prospective study was conducted in which patients independently rated their
pain scores at primary triage; EHC providers (triagers and doctors) separately rated the patients’
pain scores, based on their observations.
Results: The mean patient pain score on arrival was 6.8 ± 1.6, whereas those estimated by
doctors and triagers were 5.6±1.8 and 4.3±1.9, respectively. There were significant differences among
patients, triagers and doctors (P< 0.001). There were five conditions (soft tissue injury, headache,
abdominal pain, fracture and abscess/cellulites) that were significantly different in pain scores
between patients and EHC providers (P<0.005). The mean pain score of patients upon discharge or
admission to the ward was 3.3 ± 1.9.
Conclusions: There were significant differences in mean patient pain scores on arrival,
compared to those of doctors and triagers. Thus, asking for pain scores is a very important step
towards comprehensive pain management in emergency medicine.
5.Assessment of Respiratory Problems in Workers Associated with Intensive Poultry Facilities in Pakistan
Roheela YASMEEN ; Zulfiqar ALI ; Sean TYRREL ; Zaheer Ahmad NASIR
Safety and Health at Work 2020;11(1):118-124
Background:
The poultry industry in Pakistan has flourished since the 1960s; however, there are scarce data regarding the impact of occupational exposure on the pulmonary health of farm workers in terms of years working in the industry. The objective of the present study was to assess the effect of poultry environment on the health of occupationally exposed poultry farmers in countries of warm climatic regions, such as Pakistan. This study will also show the effect of exposure to poultry facilities on the health of poultry farmers in the context of low-income countries with a relatively inadequate occupational exposure risk management.
Materials and methods:
The lung function capacity of 79 poultry workers was measured using a spirometer. Along with spirometry, a structured questionnaire was also administrated to obtain information about age, height, weight, smokersonsmokers, years of working experience, and pulmonary health of farm workers. The workers who were directly involved in the care and handling of birds in these intensive facilities were considered and divided into four groups based on their years of working experience: Group I (3-10 months), Group II (1-5 years), Group III (6-10 years), and Group IV (more than 11 years). The forced vital capacity (FVC), forced expiratory volume in one second (FEV1) and the FEV1/FVC ratio were considered to identify lung function abnormalities. Statistical analysis was carried out using independent sample t test, Chi-square test, Pearson's correlation, and linear regression.
Results:
Based on the performed spirometry, 68 (86 %) of workers were found normal and healthy, whereas 11 (14 %) had a mild obstruction. Of the 11 workers with mild obstruction, the highest number with respect to the total was in Group IV (more than 11 years of working experience) followed by Group III and Group II. Most of the workers were found healthy, which seems to be because of the healthy survivor effect. For the independent sample t test, a significant difference was noticed between healthy and nonhealthy farmers, whereas Chi-square test showed a significant association with height, drugs, and working experience. Linear regression that was stratified by respiratory symptoms showed for workers with symptoms, regression models for all spirometric parameters (FVC, FEV1, and FEV1/FVC) have better predictive power or R square value than those of workers without symptoms.
Conclusion
These findings suggest that lung function capacity was directly related to years of working experience. With increasing number of working years, symptoms of various respiratory problems enhanced in the poultry workers. It should be noted that most of the poultry workers were healthy and young, the rationale being that there is a high turnover rate in this profession. The mobility in this job and our finding of 86% of the healthy workers in the present study also proposed healthy worker survivor effect.
6.Arthroscopic Mumford Procedure Utilizing the Anteromedial and Neviaser Portals – A Pilot Cadaveric Study on Neurovascular Structures at Risk
Nasir Mohd Nizlan ; Azfar Rizal Ahmad ; Hisham Abdul Rashid ; Paisal Hussin ; Che Hamzah Fahrudin ; Abdullah Arifaizad ; Mohamad Aris Moklas
Malaysian Journal of Medicine and Health Sciences 2016;12(2):18-22
Introduction: Degenerative disorder involving the acromioclavicular
joint (ACJ) is quite common especially in the elderly.
One of the surgical modalities of treatment of this disorder is the
Mumford Procedure. Arthroscopic approach is preferred due to
its reduced morbidity and faster post-operative recovery. One
method utilizes the anteromedial and Neviaser portals, which
allow direct and better visualization of the ACJ from the
subacromial space. However, the dangers that may arise from
incision and insertion of instruments through these portals are
not fully understood. This cadaveric study was carried out to
investigate the dangers that can arise from utilization of these
portals and which structures are at risk during this procedure.
Materials and Methods: Arthroscopic Mumford procedures
were performed on 5 cadaver shoulders by a single surgeon
utilizing the anteromedial and Neviaser portals. After marking
each portals with methylene blue, dissection of nearby structures
were carried out immediately after each procedure was
completed. Important structures (subclavian artery as well as
brachial plexus and its branches) were identified and the nearest
measurements were made from each portal edges to these
structures. Results: The anteromedial portal was noted to be
closest to the suprascapular nerve (SSN) at 2.91 cm, while the
Neviaser portal was noted to be closest also to the SSN at 1.60
cm. The suprascapular nerve was the structure most at risk
during the Mumford procedure. The anteromedial portal was
noted to be the most risky portal to utilize compared to the
Neviaser portal. Conclusion: Extra precaution needs to be given
to the anteromedial portal while performing an arthroscopic
distal clavicle resection in view of the risk of injuring the
suprascapular nerve of the affected limb.
urgical Procedures, Operative
;
General Surgery
7.Homozygous mutations in NTRK1 gene underlie congenital insensitivity to pain with anhidrosis in Pakistani families
Humaira Aziz Sawal ; Muhammad Ikram Ullah ; Arsalan Ahmad ; Abdul Nasir ; Ali Amar ; Ejaz A. Khan ; Mamoon Rashid ; Saqib Mahmood ; Peter John ; Wasim Ahmad ; Christian A. Hübner ; Muhammad Jawad Hassan
Neurology Asia 2016;21(2):129-136
Congenital insensitivity to pain with anhidrosis is a rare autosomal recessive disorder presenting
with loss of pain sensation, thermal sensation defects, and self-mutilating behavior. In the present
study, we recruited two consanguineous pedigree showing pain insensitivity symptoms from Pakistan
for clinical and molecular investigations. In family A, one female patient displayed classical CIPA
symptoms along with microcephaly and severe intellectual disability. During course of the disease,
her right foot was amputated and had remarkable dental degeneration and teeth shedding. In family B,
one boy presented with classical symptoms of congenital insensitivity to pain with anhidrosis. Blood
was collected from both families for molecular studies. Sequencing with the Ilumina Trusight One
Sequencing Panel covering 4813 OMIM genes revealed a known homozygous mutation c.2084C>T;
p.P695L of NTRK1 in family A and a novel truncated mutation c.2025C>G; p.Y681X in family B.
Protein modeling analysis of both mutations (p.P695L and p.Y681X) predicted loss of the rigidity in
tyrosine kinase domain of NTRK1 that led to conformational changes as well as deleterious effect on
protein function. The known mutation was reported more than a decade ago in a family from Northern
Israel and other non-sense mutation is newly identified. It is interested that most of NTRK1 mutations
are associated with this domain. This is first ever report of NTRK1 variants in congenital insensitivity
to pain with anhidrosis patients from Pakistan.
Pain Insensitivity, Congenital
8.Efficacy of mitomycin C in reducing recurrence of anterior urethral stricture after internal optical urethrotomy.
Liaqat ALI ; Muhammad SHAHZAD ; Nasir ORAKZAI ; Ihsanullah KHAN ; Mubashira AHMAD
Korean Journal of Urology 2015;56(9):650-655
PURPOSE: To determine the efficacy of mitomycin C in reducing the recurrence of anterior urethral stricture after internal optical urethrotomy (IOU). MATERIALS AND METHODS: This was a randomized controlled trial conducted in the Department of Urology at the Institute of Kidney Diseases Peshawar from March 2011 to December 2013. A total of 151 patients who completed the study were divided into two groups by the lottery method. Group A (cases) comprised 78 patients in whom mitomycin C 0.1% was injected submucosally in the stricture after conventional IOU. Group B (controls) comprised 73 patients in whom IOU only was performed. Self-clean intermittent catheterization was not offered in either group. All patients were regularly followed up for 18 months. Recurrence was diagnosed by use of retrograde urethrogram in all patients and flexible urethroscopy in selected cases. Data were collected on a structured pro forma sheet and were analyzed by SPSS. RESULTS: The mean age of the patients in group A was 37.31+/-10.1 years and that in group B was 40.1+/-11.4 years. Recurrence of urethral stricture was recorded in 11 patients (14.1%) in group A and in 27 patients (36.9%) in group B (p=0.002). The mitomycin group also showed a delay in recurrence compared with the control group (p=0.002). CONCLUSIONS: Recurrence of urethral stricture is high after optical urethrotomy. Mitomycin C was found to be highly effective in preventing the recurrence of urethral stricture after IOU.
Adult
;
Follow-Up Studies
;
Humans
;
Injections, Intralesional
;
Male
;
Middle Aged
;
Mitomycin/*administration & dosage
;
Nucleic Acid Synthesis Inhibitors/*administration & dosage
;
Recurrence
;
Time Factors
;
Urethral Stricture/*prevention & control/radiography/surgery
;
Urodynamics
;
Urologic Surgical Procedures/methods
9.Non-occupational lead exposure and hypertension in Pakistani adults.
Sohaila RAHMAN ; Nasir KHALID ; Jamshed Hussain ZAIDI ; Shujaat AHMAD ; Mohammad Zafar IQBAL
Journal of Zhejiang University. Science. B 2006;7(9):732-737
Hypertension is one of the most prevalent diseases in the developed and developing countries. Based on the long historical association and the provocative findings of blood pressure effects at low level of lead exposure a study was carried out to determine if an association existed between low blood lead concentration and hypertension. In this study the effects of low-level exposure to lead on blood pressure were examined among 244 adults using atomic absorption spectrometer. For quality assurance purpose certified reference materials i.e., Animal blood A-13, Bovine liver 1577 and cotton cellulose V-9 from IAEA (International Atomic Energy Agency) and NIST (National Institute of Standard Technology) were analyzed under identical experimental conditions. The mean age of hypertensive adults was 52 years (range 43 - 66). The mean values of systolic and diastolic blood pressure were (209+/-11.7) (range 170 - 250) and (117+/-3.9) (range 105 - 140) mmHg respectively. Blood lead concentration ranged from 78 - 201 microg/L with a mean of 139 microg/L and 165 - 497 microg/L with a mean of 255 microg/L in normal and hypertensive adults respectively. Increase in systolic blood pressure was significantly predictive with increase in blood lead levels. Body mass index (BMI) and lipid profile including total cholesterol, low density lipoprotein cholesterol, high density lipoprotein cholesterol and triglyceride correlated with blood pressure.
Adult
;
Blood Pressure
;
drug effects
;
Body Mass Index
;
Cholesterol
;
blood
;
Environmental Exposure
;
Female
;
Humans
;
Hypertension
;
chemically induced
;
Lead
;
blood
;
toxicity
;
Male
;
Middle Aged
;
Occupational Exposure
10.Post-impact disaster surveillance - A medical reconnaissance team at tsunami-struck Sri Lanka.
Nasir Mohamad ; Nor Hidayah Abu Bakar ; Nik Arif Nik Mohamed ; Kamarul Aryffin Baharudin ; Abu Yazid Md Noh ; Rashidi Ahmad ; Nik Hisamuddin Nik Abd. Rahman
Malaysian Journal of Medical Sciences 2007;14(1):79-83
Emergency Medicine and Disaster Medicine are two specialties which are similar in the multidisciplinary involvement during the acute phase of the disaster. Recently, there was an increase in the number of disasters in the world but not many physicians are familiar with the principles for dealing with such situations, the unique organizational demands, coordination and the urgent need for medical assistance and relief. This case report delineates our experiences at a tsunami disaster area and the approach to setting up a medical relief team in the affected area. A medical reconnaissance team comprising of an emergency doctor from Hospital Universiti Sains Malaysia (H.U.S.M) and two MERCY Malaysia members was assembled. The team flew to Colombo on day 5 after the tsunami with medical supplies and related materials. The mission started from December 31st 2004 until January 8th 2005. Our surveillance area covered the Southern and Eastern Province with a total distance of 1700 km along the coast. The strategies employed during this medical reconnaissance included risk analysis, devising a resources matrix, developing lines of communication and rapport with other relief teams, Sri Lankan government agencies, and local and international non-government organizations. As a result, our team was able to set up a medical relief camp and distribute the relief items to the tsunami victims. In conclusion, the Disaster Emergency Medical Assistant Team (DEMAT) from H.U.S.M and MERCY Malaysia were able to set up and provide medical relief with our limited resources to a large scale disaster situation.
Disasters
;
legal surveillance
;
Sri Lanka
;
Malaysia
;
After values