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Home > Cancer Prevalence in Karachi City by Use of Smokeless Tobacco Products

Cancer Prevalence in Karachi City by Use of Smokeless Tobacco Products

Thesis Info

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Author

Rehman, Atta Ur

Program

PhD

Institute

Federal Urdu University of Arts, Science and Technology

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2018

Thesis Completion Status

Completed

Subject

Heavy metals

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/10189/1/PhD%20Thesis%20%28Atta%20ur%20rehman%29.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676725661331

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The objective of this study is to measure the level of heavy metals such as As, Cd, Cr, Cu, Ni, Pb, Se, Co, Fe and Mn in smokeless tobacco products (STPs), to know about the ingredients used in the manufacture of STPs, to estimate the potential risk by calculating the daily intake (DImetals) and target hazard quotients (THQ). The individual incremental cancer risk (ILTR) of various types of smokeless tobacco products (STPs) and population incremental lifetime cancer risk (ILTR) of selected age groups for consumption of inorganic Arsenic (iAs) were also calculated to excess the cancer risk associated with the smokeless tobacco products (STPs). Samples of STPs and their major ingredients were randomly collected from different markets of Karachi city (Pakistan) and classified into different categories. Samples were digested by using the nitric acid (HNO3) and analyzed by atomic absorption spectroscopy. The daily consumption of STPs was calculated by a questioner, which helped to estimate daily intake of metals (DImetals) and target hazard quotient (THQ) of metals. The high concentration of As, Cr, Se, Fe and Mn were found, while Cu, Ni, Pb and Co were found in low concentration in different STPs. The consumption of STPs obtained as 5.11 – 42.38, 7.67 – 98.55 and 6.39 – 108.46 g/day for the three age groups, below 20, between 21- 40 and above 40 years respectively. The average metal concentration and multivariate analysis indicate that the source of As, Cr, Se, Fe and Mn may be associated with processing of STPs or addition of additive raw ingredients. The high ingestion beyond the safe limit of Cu, Ni, Pb and Co is noted in regards to their consumption pattern. The total THQ (TTHQ) of studied categories of STPs exceeded the safe limit of >1 which indicates the health risk and the ILTR values for individual types of STPs and population ILTR of different age groups specifies the cancer risk associated with their excessive use.
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قاری محمد یوسف

قاری محمد یوسف
قاری محمد یوسف صاحب ندوۃ المصنفین کے یوم تاسیسں سے۱۹۵۱ء تک ادارہ سے برابر وابستہ رہے لیکن ان کاتعلق دفتر سے تھا اس سے بھی بڑھ کر ہم لوگوں سے ان کابڑا تعلق یہ تھا کہ وہ خود دیوبند کے فارغ التحصیل اورمولانا قاری محمد اسحاق صاحب میرٹھی جو حضرت مفتی عزیز الرحمن صاحب(والد ماجدمولانا عتیق الرحمن عثمانی) کے خلیفۂ مجاز اورایک بلند پایہ صوفی اورعارف باﷲ تھے، ان کے صاحبزادے تھے۔ ۱۹۳۷ء سے پاکستان جانے تک قاری اورمترجم کی حیثیت سے آل انڈیا ریڈیو سے برابر وابستہ رہے اوربہت مقبول تھے۔ترک وطن کے بعد حیدرآباد سندھ میں ناظم تعلیمات اسلامی کی حیثیت سے برسوں کام کیا۔ دوتین سال سے بعض خانگی حوادث کے باعث خانہ نشین ہوگئے تھے۔انتقال کے وقت۷۲۔۷۳ برس کی عمرہوگی۔اللھم اغفرلہ وارحمہ ۔
[فروری۱۹۷۱ء]

فقہاء کی نظر میں عبادات میں اوقات مکروہہ اور ان کے اسباب و اثرات کا علمی جائزہ

For every worshipping, almighty Allah has appointed a specific time, same is the case with prayer (salat). But the following five appointed times for prayers are abhorrent: 1) At noon time. 2) At Sun set. 3) At Sun rise. 4) After Asar Prayer. 5) After the evening prayer. To offer prayer in the first three mentioned times, is not allowable in the views of Ahnaf. According to Imam Shaafi, Imam Malik and Imam Ahmad, obligatory prayer (salat) is permissible but not nafl prayer. Near to Imam Shaafi, in these forbidden timings, “NawaflZawat-ulAsbab” is legal and in Makkah every type of Nafl is also permissible. Even, during these timings, funeral prayer and sijdae-telawat is allowable with duress. There are different views regarding the last two forbidden times.

Biochemical Characterization of in Vitro Salt Tolerant Cell Lines and Regenerated Plants of Potato Solanum Tuberosum L.

The present investigation deals with the establishment of an efficient in vitro selection strategy to produce salt-tolerant cell lines and subsequent regeneration protocols in potato (cvs. Cardinal and Desiree). The activities of antioxidant enzymes (peroxidase, catalase and superoxide dismutase) and total soluble protein contents of various tissues under stress were evaluated to understand their possible role in salinity tolerance. Exogenous application of ascorbic acid and salicylic acid were also tested for salt stress alleviation. In order to proceed with these objectives, the initial focus was to establish protocols for micropropagation, callus induction and maintenance, plant regeneration, establishment of cell suspension cultures and ex vitro acclimatization of regenerated plants. Three different concentrations of TDZ (10-8, 10-9, or 10-10 M) in MS medium were tested for the purpose of in vitro clonal propagation. MS basal medium fairly supported micropropagation of both the tested potato cultivars followed closely by MS medium supplemented with TDZ (10-10 M). For callus induction and proliferation in dark, internodal segments proved to be a good explant source whereas MS medium fortified with 2, 4-D (18.09 μM) was the best medium composition equally effective for both the potato cultivars. A combination of NAA (2.64 μM) and TDZ (1.00 μM) supplemented to MS medium was the best choice for shoot initiation from callus cultures after 20 and 21 days in Cardinal and Desiree, respectively. Rooting of regenerated shoots was achieved on MS medium supplemented with 8.87 μM BAP, 2.64 μM NAA and 0.123 μM IBA. Cell suspension cultures using friable calluses were developed successfully using MS2 medium for the two cultivars. The best supporting medium for ex-vitro transplantation of potato plants was vermiculite. It was observed in this study that different in vitro growth parameters, i.e., shoot/root length and numbers of roots decreased while number of shoots increased with an increase in NaCl (20-140 mM) concentration in the medium. In Desiree, rosette-type of shoot development initiated at 100 mM whereas in Cardinal it was evident at 120 mM NaCl level. During this investigation, a direct recurrent selection procedure was employed to select salt- tolerant cell lines in potato (Cvs. Cardinal and Desiree) on the basis of sub-lethal concentration of salt. Results have shown more than 50% reduction in relative fresh weight in both the cultivars above 100 mM NaCl. Callus morphology correspondingly changed from off-white to blackish-brown above 100 mM to acutely-necrotic at 140 mM NaCl. Regeneration potential of recurrently-selected callus cultures (100 mM NaCl-treated) on salt- free medium was more pronounced in Desiree as compared to Cardinal. When well- acclimatized recurrently-selected plants were treated with 100 mM NaCl and compared with control plants to check their acquired salinity tolerance, it was observed that recurrently- selected plants showed higher fresh/dry weight and number of tubers in both the cultivars. A slight decrease in protein contents of in vitro Cardinal cultures was observed as the concentration of NaCl (20-140 mM) gradually increased in the media. However, there was an increase in protein contents in Desiree plants when subjected to increasing salt concentrations. In case of in vitro recurrently-selected plants, protein contents were higher as compared to control (non-selected ones) in both the cultivars. The peroxidase activity exhibited a slightly decreasing trend in Cardinal though an increasing one was observed in Desiree with an increasing NaCl level in the medium. In the present investigation, recurrently-selected plants had higher POD, CAT and SOD activities as compared to the control ones in both the cultivars.