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24 result(s) for "Shakil Malik, Saima"
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Recent insights into breast cancer incidence trends among four Asian countries using age-period-cohort model
Breast cancer is one of the rapidly increasing cancers among women and a significant cause of cancer-related morbidity and mortality worldwide. Therefore, the current study was designed to examine and compare trends of breast cancer incidence (BCI) during the observed period (1990-2015) in specific age groups and investigate age-specific, time period, and birth cohort-related effects on BCI in China, India, Pakistan, and Thailand. Data related to BCI were retrieved from the Institute for Health Metrics and Evaluation. Age-period-cohort model joint with intrinsic estimator algorithm was used to estimate the effect of age, period, and birth cohort on BCI. BCI rates were analyzed among different age groups ranging from 20 to 84 years in specified periods. Overall, results showed an increasing trend of BCI among four Asian countries during the study period especially in age groups 50 to 84 years. Higher incidence rates were observed in 2015 in the age group 70-74, 65-69, 50-54, and 60-64 in Pakistan, China, India, and Thailand, respectively. Age period cohort analysis revealed significantly raised effect of age and period and declined effect of the cohort on incidence rates. The current study reported increased BCI with time in selected four Asian countries. Overall, BCI remained high in Pakistan as compared to China, India, and Thailand. Although proper registries are not available in most of the developing Asian countries, the current study highlighted the increased incidence and may play an essential role in registries development or spreading awareness against this disease. Therefore, maintaining proper records to build registries at the national level along with advancements in breast cancer screening and treatment are highly recommended to deal with the increasing burden of this disease.
Mapping the Global distribution, risk factors, and temporal trends of COPD incidence and mortality (1990–2021): ecological analysis
Background Chronic Obstructive Pulmonary Disease (COPD) remains a significant global public health challenge, contributing to substantial morbidity and mortality worldwide. This study aims to analyze global trends in COPD from 1990 to 2021, with a focus on age, sex, and regional variations. By assessing the global burden of COPD and its association with key risk factors, this research provides critical insights into progress toward health-related Sustainable Development Goals (SDGs) and underscores the urgent need to prioritize COPD in public health agendas. Methods Utilizing data from the Global Burden of Disease (GBD) study, this research conducted a comprehensive ecological analysis of COPD epidemiology from 1990 to 2021. Key measures included incidence, mortality, and age-standardized rates, alongside an examination of risk factors such as smoking and ambient particulate matter pollution, quantified using country-level summary exposure values (SEV). Statistical analyses, including descriptive analysis, annual rate of change (ARC), and correlation analysis, were applied to assess the burden of COPD and investigate its ecological associations with major risk factors. Results In 2021, COPD accounted for 16.90 million new cases and 3.70 million deaths globally. The age-standardized incidence rate was 197.37 (95% UI: 181.6–213.42) per 100,000 person-years, while the age-standardized mortality rate was 45.22 (95% UI: 40.61–49.70) per 100,000 person-years. Although global COPD incidence rates declined by 2% from 1990 to 2021, the pace and extent of this decline varied, with some age groups, sexes, and regions experiencing slower reductions or even increases. Higher COPD burden was observed in areas with elevated smoking prevalence, air pollution and greater socioeconomic development. Conclusions This study highlights the ongoing global burden of COPD and its varying trends from 1990 to 2021 across age groups, sexes, and regions. While incidence and mortality rates have slightly declined, disparities persist, particularly among older adults, men, and regions with higher smoking prevalence and air pollution. These findings emphasize the urgent need to integrate COPD into public health priorities, focusing on targeted interventions to reduce key risk factors. Sustained efforts are essential to achieving health-related Sustainable Development Goals (SDGs) and improving global COPD outcomes.
Estimating disparities in breast cancer screening programs towards mortality, case fatality, and DALYs across BRICS-plus
Background Numerous studies over the past four decades have revealed that breast cancer screening (BCS) significantly reduces breast cancer (BC) mortality. However, in BRICS-plus countries, the association between BCS and BC case fatality and disability are unknown. This study examines the association of different BCS approaches with age-standardized mortality, case-fatality, and disability-adjusted life years (DALYs) rates, as well as with other biological and sociodemographic risk variables, across BRICS-plus from a national and economic perspective. Methods In this ecological study applying mixed-effect multilevel regression models, a country-specific dataset was analyzed by combining data from the Global Burden of Disease study 2019 on female age-standardized BC mortality, incidence, and DALYs rates with information on national/regional BCS availability (against no such program or only a pilot program) and BCS type (only self-breast examination (SBE) and/or clinical breast examination (CBE) [SBE/CBE] versus SBE/CBE with mammographic screening availability [MM and/or SBE/CBE] versus SBE/CBE/mammographic with digital mammography and/or ultrasound (US) [DMM/US and/or previous tests] in BRICS-plus countries. Results Compared to self/clinical breast examinations (SBE/CBE) across BRICS-plus, more complex BCS program availability was the most significant predictor of decreased mortality [MM and/or SBE/CBE: − 2.64, p  < 0.001; DMM/US and/or previous tests: − 1.40, p  < 0.001]. In the BRICS-plus, CVD presence, high BMI, second-hand smoke, and active smoking all contributed to an increase in BC mortality and DALY rate. High-income and middle-income regions in BRICS-plus had significantly lower age-standardized BC mortality, case-fatality, and DALYs rates than low-income regions when nationwide BC screening programs were implemented. Conclusions The availability of mammography (digital or traditional) and BCS is associated with breast cancer burden in BRICS-plus countries, with regional variations. In light of high-quality evidence from previous causal studies, these findings further support the preventive role of mammography screening for BCS at the national level. Intervening on BCS related risk factors may further reduce the disease burden associated with BC.
Unraveling the Epidemiology, Geographical Distribution, and Genomic Evolution of Potentially Lethal Coronaviruses (SARS, MERS, and SARS CoV-2)
SARS CoV appeared in 2003 in China, transmitted from bats to humans via eating infected animals. It affected 8,096 humans with a death rate of 11% affecting 21 countries. The receptor binding domain (RBD) in S protein of this virus gets attached with the ACE2 receptors present on human cells. MERS CoV was first reported in 2012 in Middle East, originated from bat and transmitted to humans through camels. MERS CoV has a fatality rate of 35% and last case reported was in 2017 making a total of 1,879 cases worldwide. DPP4 expressed on human cells is the main attaching site for RBD in S protein of MERS CoV. Folding of RBD plays a crucial role in its pathogenesis. Virus causing COVID-19 was named as SARS CoV-2 due its homology with SARS CoV that emerged in 2003. It has become a pandemic affecting nearly 200 countries in just 3 months' time with a death rate of 2-3% currently. The new virus is fast spreading, but it utilizes the same RBD and ACE2 receptors along with furin present in human cells. The lessons learned from the SARS and MERS epidemics are the best social weapons to face and fight against this novel global threat.
Establishing Reference Intervals for HBA1C in all three Trimesters of Pregnancy; A Cross-Sectional Study on Healthy Pregnant Women of Quetta, Baluchistan
Objective: To establish the reference intervals in healthy pregnant females of Quetta, Baluchistan, for Glycosylated Hemoglobin (HbA1c) in all three trimesters of pregnancy. Study Design: Cross-sectional study. Place and Duration of Study: Pathology Department Combined Military Hospital, Quetta Pakistan, from Jun 2018 to Jun 2019. Methodology: Blood samples of healthy pregnant females were drawn for Glycosylated haemoglobin (HbA1c). Fasting plasma glucose and haemoglobin were also measured to rule out hyperglycemia and anaemia. Samples for Glycated haemoglobin(HbA1c) were analyzed by Turbidimetric Immuno-inhibition (TINIA) method. For all the trimesters, 5th and 95th percentiles were taken as reference intervals for Glycosylated haemoglobin (HbA1c) and compared for each trimester. Results: A total of 388 samples were taken, of which 136(35.05%) females were from the first trimester, 128(32.98%) and 124(31.97%) from the second and third trimesters, respectively. The mean age of the study population was 25.1±3.7 years in the first trimester, 26.7±4.5 years in the second-trimester while and the third trimester it was 26.8±4.8 years. In the first, second,and third trimesters, the reference intervals for Glycosylated haemoglobin (HbA1c) were 3.8-5.2%, 4.1-5.4%, and 4.2-5.7%,respectively. Conclusion: For the exact diagnosis of hyperglycemia in pregnancy, each laboratory should establish its reference intervals of Glycated haemoglobin (HbA1c) for each trimester as it varies from trimester to trimester.
Reference Interval of Thyroid Stimulating Hormone and free Tetra-iodothyronine in Healthy Pregnant Women of Quetta, Baluchistan
Objective: To establish the reference intervals of thyroid stimulating hormone and free Tetraiodothyronine in healthy pregnant women of Quetta, Baluchistan. Study Design: Cross-sectional study. Study Setting and Duration: Combined Military Hospital, Quetta Pakistan, at Jun 2018 to Jun 2019.Methodology: Consecutive blood samples of healthy pregnant women (in all three trimesters) were taken to analyse thyroid stimulating hormone and free Tetra-iodothyronine by electrochemiluminescence immunoassay. For all three trimesters, the 5th and 95th percentiles were taken as reference intervals of thyroid stimulating hormone and free Tetraiodothyronine. Results: A total of 388 blood samples were taken. Of these, 136 samples were from the first trimester. The mean age of the study population was 25.1±3.7 years in the first trimester, 26.7±4.5 years in the second trimester, and in the third trimester, it was 26.8±4.8 years. The reference interval for thyroid stimulating hormone in the first trimester was 0.6-3.3 uIU//ml, while it was 0.6-3.8uIU/ml and 0.6- 2.7uIU//ml during the second and third trimesters, respectively. Similarly, in the first-trimester reference interval for free Tetraiodothyronine was 9.8-18.0pmol/l. The values of free Tetraiodothyronine in the second and third trimesters were 10.4-20.1pmol/l and 11.0-20.9pmol/l, respectively. Conclusion: All laboratories should establish reference intervals for thyroid stimulating hormone (TSH) to avoid misdiagnosing thyroid disorders during pregnancy.
Trend Dynamics of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Transmission in 16 Cities of Hubei Province, China
A severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was detected by researchers from a patient in Wuhan, Hubei province, China, in December 2019, and broke out in January 2020. Then, the pandemic was detected in countries around the world. Therefore, precise estimates of its current and future trends are highly required for future policy implications. We retrieved data from the Health Commission of Hubei, China. Logistic-S curve model was used to estimate the current and future trends of SARS-CoV-2-infected cases among 16 cities of Hubei, China from Jan-11 to Feb-24, 2020. Out of 64,287 confirmed cases of SARS-CoV-2 infection in Hubei, higher percentage of cases were in Wuhan and Xiaogan. The highest death percentage was found in Wuhan and Qianjiang. A significant percentage of cures were found in Enshi Prefecture and Huanggang, while Wuhan showed the lowest percentage of cures. Rising trends in infected cases were observed throughout the study period, particularly in Wuhan, and a higher trend was observed after 12-Feb. Gradual decline trend of SARS-CoV-2 cases was observed during Feb-25 to Mar-15 in Hubei Province. Future forecast showed that the average number of SARS-CoV-2-infected cases might be decreased or stable in Hubei in the coming 20 days. The public must take precautionary measures in order to control and prevent disease spread and avoid extra travelling.
A Hierarchical Age–Period–Cohort Analysis of Breast Cancer Mortality and Disability Adjusted Life Years (1990–2015) Attributable to Modified Risk Factors among Chinese Women
Limited studies quantified the age, period, and cohort effects attributable to different risk factors on mortality rates (MRs) and disability-adjusted life years (DALYs) due to breast cancer among Chinese women. We used data from the Global Burden of Disease Study (GBD) in 2017. Mixed-effect and hierarchical age–period–cohort (HAPC) models were used to assess explicit and implicit fluctuations in MRs and DALYs attributable to different breast cancer associated risk factors. As the only risk factor, high body mass index (HBMI) showed continuously increasing trends in MRs and DALYs across ages, periods, and cohorts. Age, recent periods (2010–2015), and risk factor HBMI showed significant positive effect on MRs and DALYs (p < 0.05). Moreover, we reported significant interaction effects of older age and period in recent years in addition to the interplay of older age and risk factor HBMI on MRs and DALYs. Increased age and obesity contribute to substantially raised breast cancer MRs and DALYs in China and around the globe. These discoveries shed light on protective health policies and provision of healthy lifestyle for improving the subsequent breast cancer morbidity and mortality for China, as well as other related Asian regions that are presently facing the same public health challenges.
Genotypes of GSTM1 and GSTT1: Useful determinants for clinical outcome of bladder cancer in Pakistani population
Incidence of bladder cancer has increased rapidly worldwide in the past few years. Environmental as well as genetic factors are involved in the etiology of bladder cancer. Glutathione S transferase mu 1 (GSTM1) and glutathione S transferase theta 1 (GSTT1) genes are two xenobiotic metabolizing genes in phase II of detoxification process. The current study was aimed to find out the association of different environmental factors and GSTM1 and GSTT1 gene polymorphisms with susceptibility to bladder cancer in Pakistani population. Bladder cancer cases (236) and control blood samples (270) were screened using phenol chloroform method of DNA extraction followed by multiplex PCR. With respect to age; bladder cancer was more prevalent in age >60years and low grade tumors were more frequent than high grade tumors. Smokers had a significantly higher incidence rate of cancer; also family history of cancer was found to be strongly associated (P<0.05) with bladder cancer. Commonly reported symptoms by the patients of bladder cancer were hematuria, lower urinary tract symptoms (LUTS) and flank pain. A larger number of patients had undergone surgery, chemotherapy and radiotherapy. Similarly GSTM1 (OR 2.24; CI 1.5–3.2; P=0.0001) and GSTT1 (OR 2.9; CI 1.4–6.1; P=0.002) gene deletion showed a highly significant association with bladder cancer. Simultaneous deletions of both GSTM1 and GSTT1 genes also showed highly significant association (OR 5.3; CI 2.1–13.1; P=0.0001) with cancer risk. No association was found when both of the two genes deletion was compared with bladder cancer among smokers. This study suggests that GSTM1 and GSTT1 gene polymorphisms may be associated with increased susceptibility toward bladder cancer in Pakistani population.
GROWTH HORMONE LEVELS AT INDUCED HYPOGLYCEMIA; AN EFFECTIVE WAY OF DIAGNOSING GROWTH HORMONE DEFICIENCY
Objective: To introduce a relatively convenient and effective way of conducting Insulin Tolerance Test for diagnosis of Growth Hormone deficiency in children with short stature. Study Design: Cross sectional analytical study. Place and Duration of Study: Conducted at Department of Chemical Pathology and Endocrinology, Armed Forces Institute of Pathology, Rawalpindi, from May 2017 to Jul 2018. Methodology: A total of 185 cases were included. Sample selection was done by non-probability consecutive sampling technique. Insulin tolerance test was performed by taking basal sample for serum growth hormone and plasma glucose levels before giving intravenous insulin bolus according to dose of 0.15 IU/kg. Samples for Growth Hormone level were repeated at time of induced hypoglycemia (defined as plasma glucose level of <2.8 mmol/L), 30 minutes and 60 minutes post induction. Results: Mean age of the patients was 10 ± 4 years, majority 120 (65%) were males. In the study population, 41 (22%) patients showed adequate response to insulin tolerance test while 144 (78%) showed inadequate response. At level of induction, mean growth hormone levels were 31.9 ± 18.8 mIU/l and 4.7 ± 4.4 mIU/l in patients showing adequate and inadequate response respectively (p-value <0.05). Majority 32 (78%) of the patients showing adequate response had peak growth hormone response (>20 mIU/l) at induction alone, followed by 30 minutes post induction; reflecting the significance of these two samples in diagnosis of growth hormone deficiency. Conclusion: We concluded that there is a simpler ...