1.Comparative investigation of the free radical scavenging potential and anticancer property of Diospyros blancoi (Ebenaceae)
Khan Ali Muhammad ; Rahman Mahbubur Md ; Sardar Nazmul Md ; Islam Badrul Md ; Rashid Mamunur ; Sadik Golam ; Alam Khurshid AHM
Asian Pacific Journal of Tropical Biomedicine 2016;6(5):410-417
Objective: To investigate the comparative effects of Diospyros blancoi (Ebenaceae) leaves (DBL), root bark (DBRB) and stem bark (DBSB) on free radicals and cancer. Methods: The polyphenol contents, antioxidant and free radical scavenging properties were determined using standard spectrophotometric methods. Cytotoxicity and anticancer activ-ities were performed on brine shrimp nauplii and Ehrlich ascite carcinoma cells, respectively. Results: Among the extracts, DBSB showed the highest total antioxidant capacity and reducing capacity on ferrous ion. Based on 1,1-diphenyl-2-picrylhydrazyl and hydroxyl radical scavenging activities, DBSB showed (95.760 ± 0.343)%and (67.460 ± 2.641)%scavenging with IC50 of (3.10 ± 0.17) and (50.00 ± 3.11) mg/mL, respectively. The IC50 values of standard butylated hydroxytoluene and catechin (CA) for 1,1-diphenyl-2-picrylhydrazyl and hydroxyl radicals were (8.50 ± 0.25) and (75.00 ± 0.14) mg/mL, respectively suggesting that DBSB had a significant (P < 0.05) radical scavenging ac-tivity than standards. In lipid peroxidation inhibition assay, the inhibitory activity of the extracts and the standard was in the following order: DBSB > DBRB > CA > DBL. Also, the phenolic [(139.91 ± 3.924) mg gallic acid equivalent/g] and flavonoid contents [(412.00 ± 16.70) mg catechin equivalent/g)] of DBSB were higher than that of other extracts. In addition, the DBSB showed the moderate cytotoxic and anticancer properties. Conclusions: Our results indicate that Diospyros blancoi stem bark had the significant highest antioxidant and free radical scavenging properties as well as moderate anticancer activity. Hence, we assume that the anticancer activity of this plant can be, at least in part, attributed to its content in phenolic compounds as well as its significant free radical scavenging properties.
2.PCR-based analysis of Helicobacter pylori virulent genotypes among dyspeptic patients from Chittagong, Bangladesh
Abdul Musaweer Habib ; Md. Jibran Alam ; Bashudev Rudra ; Dil Umme Salma Chowdhury ; Md Abdul Quader ; Mohammad Al-Forkan
Malaysian Journal of Microbiology 2017;13(1):xx-xx
Aims: Helicobacter pylori is a causative agent of gastroduodenal diseases in Bangladesh as well as throughout the
world. This study aimed to determine the H. pylori cagA, vacA and iceA virulent genotypes by PCR directly in gastric
biopsies from dyspeptic patients of Chittagong, Bangladesh and evaluating the association of these genotypes with
clinical manifestations.
Methodology and results: CLO (Campylobacter-Like Organism) test and Hp16s PCR (16S rRNA based H. pylori
specific PCR) was performed to confirm H. pylori infection. Among 111 patients, H. pylori infection was found in 60
patients by CLO test, while Hp16s PCR revealed that 54 patients were H. pylori positive. PCR amplification of the H.
pylori virulence genes was successful in 35 gastric biopsies amongst the 54 Hp16s PCR positive biopsies. The positive
rates for the cagA, vacAs1, vacAs2, vacAm1, vacAm2, iceA1, iceA2 genes were 34.3%, 71.4%, 8.6%, 62.9%, 28.6%,
20% and 11.4%, respectively. The allelic variant vacAs1m1 had a predominant percentage with 51.4%, followed by
vacAs1m2, vacAs2m2 and vacAs1m1m2 with 14.3%, 5.7% and 2.9%, respectively. Among the subtypes of vacAs1, only
s1a was detected in 54.3% of biopsies while none of the cases showed the s1b and s1c genotypes. However, there was
no statistically significant association (p>0.05) observed between the virulent genotypes and clinical conditions.
Conclusion, significance and impact of study: We found that cagA, vacAs1m1 and iceA1 were the most frequent H.
pylori genotypes in severe clinical outcomes of the infection. The data in this study would provide a basis for
understanding the diverse virulence pattern of this bacterium in Bangladeshi dyspeptic patients.
Helicobacter pylori
3.Identification of the Fungal Pathogen that Causes Strawberry Anthracnose in Bangladesh and Evaluation of In Vitro Fungicide Activity.
Md Shamim AKHTER ; Shahidul ALAM ; Md Shafiqul ISLAM ; Min Woong LEE
Mycobiology 2009;37(2):77-81
This study was conducted to identify the Colletotrichum species causing anthracnose disease of strawberry in Balgladesh and to evaluate in vitro activity of commercial fungicides it. Based on morphological and cultural characteristics, all 22 isolates were identified as Colletotrichum gloeosporioides. They developed white or glittery colonies with grey to dark grey reverse colony colors and they produced cylindrical conidia. The efficacy of five commercial fungicides, Bavistin DF, Dithane M-45, Sulcox 50 WP, Corzim 50 WP and Rovral 50 WP, were tested against the fungus. Bavistin inhibited radial growth completely and was followed in efficacy by Dithane M-45. In Bavistin DF treated media, the fungus did not produce conidia. The percent inhibition of radial growth of the fungus was increased with the increasing concentrations of fungicide.
Aminoimidazole Carboxamide
;
Bangladesh
;
Benzimidazoles
;
Carbamates
;
Colletotrichum
;
Cultural Characteristics
;
Fragaria
;
Fungi
;
Humans
;
Hydantoins
;
Maneb
;
Spores, Fungal
;
Zineb
4.Right Phrenic Nerve Palsy: A Rare Presentation of Thoracic Aortic Aneurysm
Jamal Akhtar ; Mohammed Azfar Siddiqui ; Nafees Ahmad Khan ; Md Arif Alam
Malaysian Journal of Medical Sciences 2013;20(4):98-101
Phrenic nerve palsy causing hemidiaphragm paralysis is a very uncommon feature of thoracic aortic aneurysm. In one case, a 45-year-old man complained of chronic chest pain, dysphagia, and hoarseness of voice; posteroanterior view chest radiograph revealed lobular enlargement of the superior mediastinum and elevated right hemidiaphragm. Contrast-enhanced computed tomography (CT) of the thorax revealed a giant partially thrombosed aneurysm originating from the ascending aorta and extending into the aortic arch, causing a widening of the aorta-pulmonary window and a compression of the thoracic esophagus. Right hemidiaphragm elevation was explained by the gross mass effect of the aneurysm on the right hilum, causing right phrenic nerve palsy. The patient was to be operated on for surgical correction of the aneurysm, but died before surgery due to spontaneous rupture.
Deglutition Disorders
;
Hoarseness
;
Aortic Aneurysm, Thoracic
;
Paralysis
;
Phrenic Nerve
5.Under-reporting of energy and nutrient intake is a persistent issue in the Malaysian Adult Nutrition Surveys
Ahmad Ali Zainuddin ; Norazmir Md. Nor ; Safiah Md Yusof ; Adriana Irawati Adriana Irawati ; Tahir Aris Tahir Aris ; Foo Leng Huat
Malaysian Journal of Nutrition 2019;25(2):261-271
Introduction: Under-reporting of energy intake is a common cause of bias in nutritional studies. This study was aimed at examining the extent of under- reporting of energy intake and its related characteristics among respondents in the Malaysian Adult Nutrition Survey (MANS) 2003 and MANS 2014.
Methods: The present study analysed energy intakes of 9,624 adults aged 18-59 years from the MANS in year 2014 (2,890 respondents) and 2003 (6,734 respondents) using a single 24-hour diet recall. Basal metabolic rates (BMR) were calculated from the age- and gender-specific equations of Schofield. Under-reporting was defined as an energy intake:BMR ratio of <1.2 as proposed by Goldberg.
Results: Under-reporting was found to have increased significantly from 53% in 2003 to 61% in 2014. In both surveys, under-reporting increased with higher body mass index (BMI) and older age groups. It was higher among women than men, lowest among those with primary schooling or below, and those living in Peninsular Malaysia. It was higher among rural respondents in 2014 but higher among urban respondents in 2003. The intake of energy and micronutrients increased when under-reporters were excluded.
Conclusion: Under-reporting was prevalent in both the nationwide MANS, and is associated with BMI, age, gender, education level, location strata, zone. It is important to take this factor into account when assessing dietary intake in population-based studies.
6.Changes in energy and nutrient intakes among Malaysian adults: findings from the Malaysian Adult Nutrition Survey (MANS) 2003 and 2014
Ahmad Ali Zainuddin ; Norazmir Md. Nor ; Safiah Md Yusof ; Adriana Irawati Nur Ibrahim ; Tahir Aris ; Foo Leng Huat
Malaysian Journal of Nutrition 2019;25(2):273-285
Introduction: Monitoring changes in energy and nutrient intakes of the population over the course of time is essential to help healthcare providers develop effective dietary policies. The aim of this study was to assess the changes in the nutrient intake and Recommended Nutrient Intake (RNI) achievements by using the data obtained from the Malaysian Adult Nutrition Surveys (MANS) that were carried out in 2003 and 2014. Mis-reporting of energy intake was taken into account.
Methods: Dietary data were obtained from MANS 2003 and MANS 2014, which involved a combined total of 4,044 randomly selected respondents, aged 18-59 years, using a single 24-hour diet recall. Energy and nutrients calculations were based on the Malaysian Food Composition database using the Nutritionist Pro software. The results were compared against the RNI for Malaysia to assess dietary adequacy.
Results: The proportions of calories derived from macronutrients were within the recommendations for a healthy diet. The consumption of protein, fat, calcium, iron and vitamin A was significantly higher in 2014 than in 2003. The consumption of protein, iron, vitamin C, and vitamin A was found to exceed the RNIs in 2014. However, carbohydrate and sodium intakes had significantly decreased. Despite the decrease, sodium intake still exceeded RNI recommendations.
Conclusion: Signs of changing energy and nutrient intakes were found, including increases in protein and fat intakes since 2003, and decreased carbohydrates. This could be an alarming indicator of the tendency to eat energy dense food among the population.
7.Demographic Characteristics Associated with Missed Follow-Up Appointments among Tuberculosis Patients at Hospital Shah Alam, Selangor: A Retrospective Study from January to June 2023
Ahmad Zhafir Zulkifli ; Rabiatul Adawiyah Md Salleh, ; Nur Farha Omar
International Journal of Public Health Research 2024;14(no.1):1858-1864
Introduction:
Tuberculosis (TB) patients default their treatment during the treatment course. Therefore, this study aims to analyze the demographic characteristics of the patient who missed follow-ups and identify the reasons for missed appointments or defaulted their treatment.
Methods:
The records of patients diagnosed with TB follow-up at the chest clinic from January to June 2023 were reviewed based on our inclusion and exclusion criteria.
Results:
The retrospective descriptive analysis was conducted based on the data collected. Based on the study sample (n=33), the result shows that the majority of the defaulted patients were male in gender (n=22). Most of the missed appointments patients and defaulters are of Malay (39.4%) ethnicity and Malaysian nationality (66.7%). Most patients gave the transport issues as the reason for missed appointments followed by financial issues and feeling healthy. The majority of them missed follow-up in the first month after starting anti-TB.
Conclusions
In conclusion, missed appointments, treatment compliance and defaulted cases in TB treatment remain as one of the main challenges in the effort to end TB epidemics. Further in-depth research is required to propose effective measures to solve this issue and improve the national TB control program.
8.Recent Progress in the Development of TSPO PET Ligands for Neuroinflammation Imaging in Neurological Diseases
Md Maqusood ALAM ; Jihye LEE ; Sang Yoon LEE
Nuclear Medicine and Molecular Imaging 2017;51(4):283-296
Neuroinflammation is heavily associated with various neurological diseases including Alzheimer's disease, Parkinson's disease, multiple sclerosis, and stroke. It is strongly characterized by the activation of microglia which can be visualized using position emission tomography (PET). Traditionally, translocator protein 18 kDa (TSPO) has been the preferred target for imaging the inflammatory progression of the microglial component. TSPO is expressed in the outer mitochondrial membrane and present in very low concentrations in the healthy human brain, but is markedly upregulated in response to brain injury and inflammation. Due to its value as a marker of microglial activation and subsequent utility for evaluating neuroinflammation in CNS disorders, several classes of TSPO radioligands have been developed and evaluated. However, the application of these second-generation TSPO radiotracers has been subject to several limiting factors, including a polymorphism that affects TSPO binding. This review focuses on recent developments in TSPO imaging, as well as current limitations and suggestions for future directions from a medical imaging perspective.
Alzheimer Disease
;
Brain
;
Brain Injuries
;
Diagnostic Imaging
;
Humans
;
Inflammation
;
Ligands
;
Microglia
;
Mitochondrial Membranes
;
Molecular Imaging
;
Multiple Sclerosis
;
Parkinson Disease
;
Stroke
9.A 15-year single centre retrospective study of antiphospholipid syndrome patients from Northern Malaysia
Md. Asiful Islam ; Fahmida Alam ; Siew Hua Gan ; Teguh Haryo Sasongko ; Wan Syamimee Wan Ghazali ; Kah Keng Wong
The Malaysian Journal of Pathology 2017;39(2):123-133
Background: Antiphospholipid syndrome (APS) is an autoimmune disorder characterised by
thrombosis and/or pregnancy morbidity in the presence of antiphospholipid antibodies (aPLs) based
on the Sydney criteria. We aimed to explore the clinico-laboratory features and treatment strategies
of APS patients retrospectively. Methodology: The medical records of APS patients registered under
Hospital Universiti Sains Malaysia (Kelantan state) between 2000 and 2015 were reviewed. Results:
A total of 17 APS subjects (age 40.7 ± 12.8 years) including 11 primary (64.7%) and six secondary
APS (35.3%) patients were identified. The follow-up period was 9.5 ± 6.7 years with male:female
ratio of 1.0:4.7. Pregnancy morbidity was the most common clinical manifestation (11/14; 78.6%)
followed by recurrent venous thrombosis (10/17; 58.8%). For other clinical features, menorrhagia
was the most frequently observed manifestation (4/14; 28.6%) followed by aPLs-associated
thrombocytopenia (4/17; 23.5%) and ovarian cyst (3/14; 21.4%). LA and aCL were positive in 94.1%
(16/17) and 81.8% (9/11) of the patients, respectively. APTT value (76.7 ± 17.0 sec) was significantly
high (p < 0.05). Low intensity warfarin alone was successful to maintain target INR (2.0 - 3.0)
and prevent recurrence of thrombosis. Conclusion: The tendency of pregnancy morbidity in this
cohort of Malaysian Kelantanese APS patients was high compared to other previously reported APS
cohorts. Low intensity warfarin was successful in preventing recurrence of thrombosis, however,
APS women receiving long-term anticoagulants should be monitored for possible occurrence of
menorrhagia and ovarian cysts.
10.Sequencing and annotation of the complete mitochondrial genome of a threatened labeonine fish, Cirrhinus reba
Mohammad Nazrul ISLAM ; Shirin SULTANA ; Md. Jobaidul ALAM
Genomics & Informatics 2020;18(3):e32-
The mitochondrial genome of a species is an essential resource for its effective conservation and phylogenetic studies. In this article, we present sequencing and characterization of the complete mitochondrial genome of a threatened labeonine fish, Cirrhinus reba collected from Khulna region of Bangladesh. The complete mitochondrial genome was 16,597 bp in size, which formed a circular double-stranded DNA molecule containing a total of 37 mitochondrial genes (13 protein-coding genes, 2 ribosomal RNA genes, and 22 transfer RNA genes) with two non-coding regions, an origin of light strand replication (OL) and a displacement loop (D-loop), similar structure with other fishes of Teleostei. The phylogenetic tree demonstrated its close relationship with labeonine fishes. The complete mitogenome of Cirrhinus reba (GenBank no. MN862482) showed 99.96% identity to another haplotype of Cirrhinus reba (AP013325), followed by 90.18% identity with Labeo bata (AP011198).