Papers by Mahfuza Sultana
Article type: Original article Article history: Received: 18 July 2020 Revised: 24 August 2020 Ac... more Article type: Original article Article history: Received: 18 July 2020 Revised: 24 August 2020 Accepted: 21 September 2020 DOI: 10.29252/jhehp.6.3.2
Journal of Radioanalytical and Nuclear Chemistry
ABSTRACT
Adiponectin appears as a molecular tool for the prediction of the development of type 2 diabetes ... more Adiponectin appears as a molecular tool for the prediction of the development of type 2 diabetes mellitus (T2DM). A reduced level of serum adiponectin has been shown negatively correlated with the risk of developing T2DM. The role of adiponectin in developing T2DM in Bangladeshi population is not clearly understood. The present study aims to investigate how serum adiponectin influences in the development of T2DM in this population. A total of 74 healthy controls and 66 T2DM subjects were recruited in this study. Fasting serum glucose (FSG) levels were found significantly higher (p=0.001) in T2DM patients than the healthy controls. Significantly lower levels of serum adiponectin (p=0.001) and insulin secretory capacity, HOMA%B (p=0.001) were observed in T2DM patients compared to the healthy controls. These findings apparently show a positive correlation between serum adiponectin levels and insulin secretory dysfunction in T2DM patients. Bivariate Spearman's correlation analyses showed a significant negative association between HOMA%B and fasting serum glucose (FSG) in both control group (r =-0.271; p=0.020) and T2DM group (r=-0.813; p=0.0001). However, the Bivariate Spearman's correlation analyses showed no significant correlation between serum adiponectin level and insulin secretory capacity (HOMA%B). Multiple regression analysis also did not show any significant positive association of HOMA%B with serum adiponectin. This study suggests that low serum adiponectin is associated with T2DM in Bangladeshi population and the association is not accounted predominantly for insulin secretory dysfunction.
The present study investigates the anthropogenic metal input in to the river system, the toxic me... more The present study investigates the anthropogenic metal input in to the river system, the toxic metal contamination in the sediment of the river and evaluates the dissolution of metal from soil to surface water or leaching through soil profile. Nine sampling stations along the river channel and three in the industrial canals are chosen and a set of surface water and sediment samples from each station were collected. Samples are analyzed for Fe, Mn, Cu, Cr, Pb, Ni, Cd, As and Zn by Atomic Absorption Spectrophotometer (AAS). The findings show that, toxic metals content among all the samples are distributed in a decreasing sequence of Fe>Mn>Zn>Ni>Cu>Cr>As>Pb>Cd. The content of the most toxic metals in wastewater and sediments of the industrial canals are much higher than that of river water and sediments. Moreover, most of the toxic metal contents are found to exceed the background concentration in all sediment samples. Higher geoaccumulation values are observed for Zn, Ni and Cu probably due to the anthropogenic metal supply with uncontrolled discharge of industrial effluents into the river. Further, higher enrichment factors are found for Zn, Ni and Cu suggesting also anthropogenic source of metals. Significant correlation is also observed among these, indicating the same source of occurrence. Partition coefficient, K d values are found in the order: Ni>Zn>Cr>Cu>Pb and lower K d values are found in the sediments near industrial area indicating much leaching or dissolution. Therefore, it can be concluded that sediments of the river close to industrial area is contaminated by toxic metals which enter into the food stuff and give rise to various health hazards of the inhabitants.
Bangladesh Journal of Scientific and Industrial Research, 2009
The study was carried out in order to assess the impact of the various pollutants of textile dyei... more The study was carried out in order to assess the impact of the various pollutants of textile dyeing effluents on the surface water quality of the industrial area inside Dhaka-Narayanganj-Demra (D.N.D) embankment, Narayanganj. Physicochemical parameters such as TSS, TDS, DO, pH, EC, Turbidity, BOD, COD, anionic parameters such as F-, Cl-, NO2 -, NO3 -, SO4 - and PO4 3- and heavy metals such as Pb, Zn, Cd and Cu of the samples were investigated by using various techniques. The results showed that, textile dyeing industries inside D.N.D embankment area discharges effluents composed of various physicochemical and anionic pollutants at considerably higher level compared to pollution limit. Further, the surface water of the D.N.D channel, ponds and lakes around the studied textile dyeing industries also contain various physicochemical and anionic pollutants at intolerable limit. A significant correlation was also observed among some important water parameters of the effluents and surface ...
Scholars journal of applied medical sciences, Dec 5, 2022
Original Research Article Introduction: Androgenetic alopecia (AGA) is an androgen-mediated condi... more Original Research Article Introduction: Androgenetic alopecia (AGA) is an androgen-mediated condition that is characterized by a progressive decline in visible scalp hair density. Genetically predisposed hair follicles are the target of dihydrotestosterone (DHT), which leads to the progressive miniaturization of hair follicles and hair thinning. Dutasteride inhibits conversion of testosterone to dihydrotestosterone, which significantly improves hair growth. Objective: To assess the outcome of dutasteride in androgenic alopecia. Methods: This study was carried out at
Scholars Journal of Applied Medical Sciences
Introduction: Androgenetic alopecia (AGA) is an androgen-mediated condition that is characterized... more Introduction: Androgenetic alopecia (AGA) is an androgen-mediated condition that is characterized by a progressive decline in visible scalp hair density. Genetically predisposed hair follicles are the target of dihydrotestosterone (DHT), which leads to the progressive miniaturization of hair follicles and hair thinning. Dutasteride inhibits conversion of testosterone to dihydrotestosterone, which significantly improves hair growth. Objective: To assess the outcome of dutasteride in androgenic alopecia. Methods: This study was carried out at Dermatology and Venereology Department, Enam Medical College Hospital, Savar, Dhaka, Bangladesh from January2022 to July 2022. From the outpatient clinic fifty (50) patients were recruited who fulfilled the inclusion and exclusion criteria. Dermatologist observe every patients hair changes before, during &after treatment with dutasteride for 24 week. Results: Out Of the 50 patients, 60% patients were female. 40% patients noticed hair loss first a...
International Journal of Medical Microbiology, 2007
Vibrio cholerae O1 strains that are hybrids between the classical and El Tor biotypes were isolat... more Vibrio cholerae O1 strains that are hybrids between the classical and El Tor biotypes were isolated during two consecutive years (2004-2005) from diarrheal patients in Mozambique. Similar variants isolated in Bangladesh and recently isolated El Tor strains were analyzed for genetic diversity. Pulsed-field gel electrophoresis (PFGE) analysis using the restriction enzyme NotI, resulted in 18-21 bands showed five closely related PFGE patterns that were distributed similarly in both years (2004-2005) among the 80 strains tested in Mozambique. Overall based on the PFGE patterns the hybrids indicated an El Tor lineage. The restriction patterns of whole-chromosomal DNA grouped the hybrid strains from Mozambique into a separate cluster from Bangladeshi clinical and environmental hybrid strains. A high molecular weight band of 398 kb that contain rstR allele of the classical type was detected from all hybrid strains, which was absent in all conventional classical and El Tor strains. This band could be designated as a marker for the hybrid strains. This study suggests that hybrid strains from Mozambique are closely related to each other, different from Bangladeshi hybrid strains that are diverse in nature and all hybrid strains differed markedly from conventional classical and El Tor strains.
International Journal of Mechanical Engineering and Robotics Research, 2019
In aviation sector safety is a prime concern. Temperature sensitive items such as aircraft rubber... more In aviation sector safety is a prime concern. Temperature sensitive items such as aircraft rubber equipment, aircraft Propellant Actuating Device (PAD) items (such as Fire Extinguishing Cartridges, Ejection Seat Cartridges, Signal Cartridges etc.) are to be stored in controlled temperature in store houses. Storing of such valuable aircraft items in inappropriate temperature may affect their service life and the resultant serviceability of the aircraft. In this project, a system has been developed which will monitor the temperature in the storehouses and send a message to the concerned person when temperature crosses the maximum storage temperature level. This circuit can be used to build a temperature based alarm system where an SMS will be sent or a buzzer will be turned 'ON', when temperature goes above a particular level. For implementing this project, GSM Module-SIM900, Atmega328p-pu microcontroller based Arduino Uno, LM35 temperature sensor, DHT22 humidity sensor have been used. The data from the sensors is processed and displayed on a LCD display. Code and algorithms are developed which enables combining all of the required sensors and innovations to provide data in a controlled manner in order to build the real time package. This device is portable and can be shifted easily by changing maximum setting temperature manually using push button switch. Thus, this system can be installed in different storehouses even in industries to monitor the temperature rising and give signal to the user to activate the temperature controlling system if required.
Cogent Environmental Science, 2017
Most popular vegetables and fruits and their corresponding soil from the suburban industrial area... more Most popular vegetables and fruits and their corresponding soil from the suburban industrial area of Bangladesh were collected and the concentration of carcinogenic (Pb, As, and Cd) and non-carcinogenic (Fe, Co, V, Cu, Cr, Zn, Mn, and Ni) heavy metals was determined. Health risk was evaluated by estimating daily heavy metal intake and computing cancer and non-cancer risks (ILCR and THQ) using probabilistic risk assessment model of US-EPA. Heavy metals in vegetables varied with vegetable species as well as metal types. Higher daily intake of As, Fe, Mn, and Pb was observed from the consumption of root and leafy vegetables. Moreover, the probability of an adult for developing cancer from the consumption of studied vegetables was greater than US-EPA threshold risk limit (>10 −4) for As and Cd. In addition, cumulative cancer risk (∑ILCR) of all the studied vegetables and fruits exceeded the limit for fruit, root, leafy vegetables, and fruits (22, 15, 59, and 4%) with As, Cd, and Pb as 17, 81, and 2%, respectively. Non-cancer risk index also presented Pb, As, Mn, and Fe as the dominant contaminants of root and leafy vegetables that contributed 80-90% of HI. It suggests that the study area is unsuitable for growing leafy and root vegetables due to the risk of higher intakes of heavy metals which affect food safety. Mn, Pb, Fe, and As are the most predominant heavy metals posing noncancer risk while Cd caused the highest cancer risk.
Asian Journal of Water, Environment and Pollution, 2016
The present research has evaluated the suitability of river water near industrial area of Dhaka f... more The present research has evaluated the suitability of river water near industrial area of Dhaka for multi uses by calculating various indices. A considerable variation in the content of physicochemical and toxic elements in the studied river water suggests input of pollution from different sources. Further, excess concentration of Fe, Al and K compared to WHO standard was observed in Turag, Pb, Fe, Al, Cr and K in Buriganga, Cd, Fe, K, Al and Cr in Shitalakhya, Fe, Al and K in Bongshi and As in Dhaleswari river water. Moreover, all the river water is found to be safe for irrigation with respect to pH, TDS, SAR and MR. However, the metal pollution indices PF, PD, PLI and irrigation indices Na% and KI indicates that Buriganga river water is no longer suitable for the use of any purposes. But water of Turag, Shitalakhya and Bangshi River still can be used by controlling the source of pollution through proper treatment of waste or by preventing any further discharge of waste into the river. On the other hand Dhaleswari river water can be used for all purposes. Moreover, from the toxicity distribution pattern, it is seen that Buriganga > Shitalakhya > Bangshi > Turag > Dhaleswari. Therefore, proper management plan is necessary to protect this invaluable resource for multi use.
Journal of Biological Sciences, 2007
Assessment of dose due to natural radio-nuclides in vegetables of high background radiation area ... more Assessment of dose due to natural radio-nuclides in vegetables of high background radiation area in southeastern part of Bangladesh MATERIALS AND METHODS Description of the study area The Tulatoli village of Teknaf upazila at Cox's Bazar district is the study area which is situated
Soil Remediation and Plants, 2015
ABSTRACT
Jahangirnagar University Environmental Bulletin, 2013
Jahangirnagar University Environmental Bulletin, 2013
The effective dose of ? radiation on chitosan for mango preservation was studies in this work. Th... more The effective dose of ? radiation on chitosan for mango preservation was studies in this work. The 2% chitosan solution was irradiated with at various total doses (50-200 kGy). The mature green mangoes were soaked in un-irradiated and irradiated chitosan solutions and then they were stored at normal room temperature. The percentage of weight loss, color change and percentage of spoilage were observed for 15 days in control, un-irradiated and irradiated chitosan coated mangoes. The overall results showed the superiority of 50 kGy and 100 kGy irradiated chitosan in extending shelf life of mango as comared to control, un-irradiated and 120 kGy to 200 kGy irradiated chitosan. Jahangirnagar University Environmental Bulletin, Vol.2, 35-40, 2013 DOI: http://dx.doi.org/10.3329/jueb.v2i0.16328
Radiation Protection Dosimetry, 2013
A small part of the palaeo beach formation extending along the south-eastern fringe of Bangladesh... more A small part of the palaeo beach formation extending along the south-eastern fringe of Bangladesh was selected as study area. The sandy beach formation, enriched with heavy mineral sands containing ²³²Th-bearing monazite, is covered by a thin layer of top soil. Activity concentrations of natural and artificial radionuclides (²³⁸U, ²²⁶Ra, ²³²Th, ⁴⁰K and ¹³⁷Cs), outdoor and indoor annual effective dose rates and the radiation hazard indices were determined in the soil. The radionuclides, investigated by direct gamma-ray spectrometry using HPGe detector, showed that mean activity concentrations of ²²⁶Ra, ²³⁸U, ²³²Th, ⁴⁰K and ¹³⁷Cs in soils were 254.53 ± 6.66, 193.95 ± 7.23, 362.18 ± 6.45, 135.79 ± 24.63 and 2.21 ± 0.49 Bq kg⁻¹ respectively. The mean value of radium equivalent activity, external and internal hazards, outdoor absorbed dose rate and total annual effective dose rate were 783.24 Bq Kg⁻¹, 2.12 and 2.80, 354.32 nGyh⁻¹ and 2.52 mSv y⁻¹, respectively, which exceed the average worldwide limit and may pose a radiological threat to inhabitants.
International Journal of Environmental Analytical Chemistry, 2003
Ranitidine is a H2receptor blocker, which is widely used for the treatment of peptic ulcer diseas... more Ranitidine is a H2receptor blocker, which is widely used for the treatment of peptic ulcer disease. Present was designed to assess the therapeutic properties of different branded ranitidine hydrochloride tablets available in retail pharmacies of Bangladesh. Ranitidine HCl tablets manufactured by five different brands following USP specifications were collected from local retail Pharmacy located in Dhaka. Various parameters such as weight variation, thickness, hardness, disintegration, dissolution, potency etc. were analyzed according to the official (BP/USP) pharmacopoeia methods to evaluate their quality. The result showed that four brands of Ranitidine HCl tablets complied USP specification of potency and the remaining one was more potent. Four brands showed a good result for weight variation, hardness, disintegration time and dissolution rate. One brand of tablets showed minor deviation in dissolution rate as compared to USP specification. It is evident from the study that most o...
Uploads
Papers by Mahfuza Sultana