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Ragnarsdóttir IB, Akhter T, Junus K, Lindström L, Lager S, Wikström AK. Does Developing Interpregnancy Hypertension Affect the Recurrence Risk of Preeclampsia? A population-based cohort study. Am J Hypertens 2024:hpae034. [PMID: 38501740 DOI: 10.1093/ajh/hpae034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND Preeclampsia in a first pregnancy is a strong risk factor for preeclampsia in a second pregnancy. Whether chronic hypertension developed after a first pregnancy (interpregnancy hypertension) affects the recurrence risk of preeclampsia is unknown. METHODS This is a population-based cohort study of 391,645 women with their first and second singleton births between 2006 and 2017. Exposure groups were women with preeclampsia in their first pregnancy, interpregnancy hypertension, or both risk factors. Women with neither risk factor were used as a reference group. We calculated the adjusted relative risk (aRR) with 95% confidence intervals (CIs) for overall preeclampsia in the second pregnancy as well as preterm (<37 gestational weeks) and term (>37 gestational weeks) subgroups of the disease. RESULTS Women with preeclampsia in their first pregnancy who did or did not develop interpregnancy hypertension had rates of preeclampsia in their second pregnancy of 21.5% and 13.6%, respectively. In the same population, the corresponding rates of preterm preeclampsia were 5.5% and 2.6%, respectively. After adjusting for maternal factors, women with preeclampsia in their first pregnancy who developed interpregnancy hypertension and those who did not had almost the same risk of overall preeclampsia in their second pregnancy (aRRs with 95% CIs: 14.51; 11.77-17.89 and 12.83; 12.09-13.62, respectively). However, preeclampsia in first pregnancy and interpregnancy hypertension had a synergistic interaction on the outcome preterm preeclampsia (aRR with 95% CI 26.66; 17.44- 40.80). CONCLUSIONS Women with previous preeclampsia who developed interpregnancy hypertension had a very high rate of preterm preeclampsia in a second pregnancy, and the two risk factors had a synergistic interaction.
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Affiliation(s)
- I B Ragnarsdóttir
- Department of Women's and Children's Health, Uppsala University, Sweden
| | - T Akhter
- Department of Women's and Children's Health, Uppsala University, Sweden
| | - K Junus
- Department of Women's and Children's Health, Uppsala University, Sweden
| | - L Lindström
- Department of Women's and Children's Health, Uppsala University, Sweden
| | - S Lager
- Department of Women's and Children's Health, Uppsala University, Sweden
| | - A K Wikström
- Department of Women's and Children's Health, Uppsala University, Sweden
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Sharmin T, Nessa A, Ferdous AR, Afroz L, Akhter T, Yeasmin F, Huq MM. Status of Serum Iron and Fasting Serum Glucose in Reproductive Aged Women Taking Combined Oral Contraceptive Pill. Mymensingh Med J 2023; 32:955-958. [PMID: 37777886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/02/2023]
Abstract
The oral contraceptive pill, 'the pill', was introduced in the beginning of the 1960s. Presently, worldwide about 100 million women are current users of combined oral hormonal contraceptives (COC) most frequently used in the western world. Oral contraceptive use has been associated with decreased menstrual blood losses; thus, can independently reduce the risk of anemia and iron deficiency in women. Manufacturers have recently started to include supplemental iron in the non-hormonal placebo tablets of some contraceptives. This study was done to evaluate the status of serum iron and fasting serum glucose in combined oral contraceptive pill users in comparison to non-users. This cross sectional study was carried out in the Department of Physiology, Mymensingh Medical College, Bangladesh from July 2021 to June 2022. A total number of 120 reproductive aged women, age ranged from 15-55 years was included in this study. Among them, sixty (60) combined oral contraceptive pill users subjects were taken as study group (Group II) and sixty (60) age matched oral pill non users subjects were taken as control group (Group I). Data were expressed as mean±SD and statistical significance of difference among the group was calculated by unpaired students' 't' test. The mean±SD of serum iron of control group (Group I) and study group (Group II) were 93.22±17.19μg/dl and 181.57±22.06μg/dl respectively. The mean±SD of fasting serum glucose of control group (Group I) and study group (Group II) were 4.67±0.61mmol/L and 6.61±0.61mmol/L respectively. Serum iron and fasting serum glucose increased in study group in comparison to control group. Result is statistically highly significant (p<0.001). So there from this study it can be concluded that there is significant association of serum iron and fasting serum glucose with oral contraceptives.
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Affiliation(s)
- T Sharmin
- Dr Tania Sharmin, Lecturer, Department of Physiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Akhter T, Nessa A, Nisha NA, Sharmin A, Naznen F, Afroz L, Rukunuzzaman M, Sharmin T, Yeasmin F. Study on Body Mass Index and Fasting Serum Glucose in Postmenopausal Women. Mymensingh Med J 2023; 32:649-652. [PMID: 37391954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2023]
Abstract
Menopause is a normal physiological period that is characterized by the completely stoppage of endometrial cycles in women between the age of 45-55 years due to lack of ovarian follicular function. Several postmenopausal syndromes such as hot flushes, night sweats, vaginal dryness, depression, irritability, headache, and sleep disturbance can occur more frequently in this period which hampers the standard of life. This study was done to assess body mass index and fasting serum glucose changes in postmenopausal women in contrast with reproductive women. This cross-sectional analytical type of study was conducted in the Department of Physiology, Mymensingh Medical College, Bangladesh from January 2021 to December 2021. Total 140 women subject's age ranged between 25-65 years were involved in this study. Among them 25-45 years aged 70 (Seventy) reproductive women were involved as control group (Group I) and 45-65 years aged 70 (Seventy) postmenopausal women were taken as study group (Group II). By Anthropometric measurements, Body Mass Index (BMI) such as height and weight were taken in meter and kilogram respectively and fasting serum glucose was measured by GOD-PAP method. Results were expressed as mean (±SD) and by unpaired Student's 't' test, statistical significance of difference among the group was calculated. The mean±SD of BMI of Group I and Group II were 23.05±4.43kg/m² and 29.01±3.12kg/m² respectively. The mean±SD of body mass index is notably increase in study group in contrast with control group. The mean±SD of fasting serum glucose of control Group I and study Group II were 4.77±2.04mmol/l and 6.11±1.61mmol/l respectively. In study Group II fasting serum glucose was increased. Due to increased fasting serum glucose caused by lower level of female sex hormones specially estrogen hormone increased chance of cardiovascular diseases in postmenopausal women. Assessment of these parameters are important for early detection and prevention of complication related to high BMI and fasting serum glucose level for leading a better life.
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Affiliation(s)
- T Akhter
- Dr Tania Akhter, M Phil (Physiology), Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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4
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Akhter T, Nessa A, Sharmin A, Naznen F, Rukunuzzaman M, Sharmin T, Yeasmin F. Status of Body Mass Index and Blood Pressure in Post-Menopausal Women. Mymensingh Med J 2023; 32:303-306. [PMID: 37002738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Menopause, in between the age of 45-55 years every woman faces it, that means completely stoppage of menstruation because the decrease level of estrogen from the normal level. In this period the quality life is disturbed due to hormonal imbalance specially estrogen. This study was done to evaluate the changes of body mass index and blood pressure in post-menopausal women in comparison to reproductive women. This cross-sectional analytical type of study was done in the Department of Physiology, Mymensingh Medical College, Mymensingh, Bangladesh and the period is from January 2021 to December 2021. Total 140 women subjects age ranged between 25-65 years were involved in this study. Among them 70 post-menopausal women (45-65 years) were involved as study group (Group II) and 70 (seventy) reproductive women (25-45 years) were taken as control group (Group I). By anthropometric measurements, Body Mass Index (BMI) such as height and weight were taken in meter and kilogram respectively and systolic and diastolic blood pressure by aneroid sphygmomanometer (ALPK2, Japan). Findings were expressed as mean±SD and by unpaired student's 't' test, analytical significance of difference among the group was calculated. The mean±SD of BMI of Group I and Group II were 23.05±4.43kg/m² and 29.01±3.12kg/m² respectively. The mean±SD of body mass index is significantly higher in study group in comparison with control group. The average (±SD) of systolic blood pressure of control group I and study group II were 118.29±10.00 mm of Hg & 134.00±11.91 mm of Hg respectively. The mean±SD of systolic blood pressure was significantly higher in study group in comparison with control group. The mean±SD of diastolic blood pressure of control group I and study Group II were 79.21±6.46 mm of Hg and 89.00±6.23 mm of Hg respectively. The mean±SD of diastolic blood pressure was significantly higher in study group in comparison with control group. Post-menopausal women with high systolic and diastolic pressure have a chance of development of cardiovascular diseases, stroke. So assessment of these parameters are important for early detection and prevention of complication related to high BMI and Blood Pressure for leading a healthy life.
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Affiliation(s)
- T Akhter
- Dr Tania Akhter, M Phil (Physiology) Final Part, Department of Physiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Yeasmin F, Nessa A, Rahman MM, Huq MM, Afroz L, Sharmin T, Akhter T, Rukunuzzaman M, Ferdous AR. A Comparative Study of Body Mass Index and Blood Pressure between Sedentary and Non-Sedentary Workers. Mymensingh Med J 2023; 32:61-64. [PMID: 36594302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Sedentary lifestyle are spreading worldwide because of lack of available spaces for exercise, increased occupational sedentary behaviors such as office work and the increased prevalence of television and video devices. Increased incidence of sedentary lifestyle and obesity in developed and developing countries is one of the major risk factors for the development of cardiovascular diseases. This study was undertaken to analyze the differences in anthropometric and cardiovascular parameters in sedentary and non-sedentary male subjects. This analytical type of cross sectional study was carried out in the Department of Physiology, Mymensingh Medical College, Mymensingh, Bangladesh from July 2021 to June 2022. This study consisted 50 male employees of 25-60 years who worked in an office were study group (Group II) and control group Group-I) consisted of 50 male age matched physical laborers. BMI was calculated as weight in kilogram divided by the height in meter square i.e. kg/m². Blood Pressure was measured by indirect auscultatory method with an aneroid sphygmomanometer. Statistical analysis was done by using Student's un-paired 't' test. Values expressed as mean ± standard deviation. P value was taken as significant at 5 percent confidence level. The mean±SD BMI in kg/m² of Group I and Group II were 21.90±2.22 and 29.32±3.13 respectively. The mean±SD systolic blood pressure of Group I and Group II were 112.20±6.79 and 145.10±8.11 and mean±SD diastolic blood pressure of Group I and Group II were 72.80±5.73 and 91.00±5.05 respectively. The BMI and blood pressure were increased in sedentary group compared to non-sedentary group. From the study, it appears that the risk for cardiovascular disease is increased in sedentary workers.
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Affiliation(s)
- F Yeasmin
- Dr Fahmida Yeasmin, Lecturer, Department of Physiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Sharmin T, Nessa A, Ferdous AR, Sharmin A, Huq MM, Yeasmin F, Afroz L, Rukunuzzaman M, Akhter T, Naznen F, Yeasmin F. Evaluate the Changes of Body Mass Index and Blood Pressure in Combined Oral Contraceptive Pill Users. Mymensingh Med J 2023; 32:18-21. [PMID: 36594294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The oral contraceptive pill, 'the pill', was introduced in the starting of the 1960s. Presently, worldwide about 100 million women are current users of combined hormonal contraceptives (COC) most frequently used in the western world. The most frequently used agents are a combination of drugs containing both the estrogen and progesterone. This combination is considered to be highly efficacious, generally considered 99.9% and a use effectiveness of 97.0% to 98.0%. This study was done to evaluate the changes of Body Mass Index (BMI) and Blood pressure ( BP) in combined oral contraceptive pill users in comparison to non- users. This cross sectional study was carried out in the Department of Physiology, Mymensingh Medical College, Mymensingh, Bangladesh from July 2021 to June 2022. Total number of 120 reproductive aged women, age ranged from 15-55 years was included in this study. Among them, sixty (60) combined oral contraceptive pill users subjects were taken as study group (Group II) and sixty (60) age matched oral pill non users subjects were taken as control group (Group I). Data were expressed as mean±SD and statistical significance of difference among the group was calculated by unpaired students' 't' test and Pearson's correlation coefficient test. The mean±SD of BMI of control group (Group I) and study group (Group II) were 22.50±1.50 kg/m² and 27.64±1.28 kg/m² respectively. In study group (Group II) BMI was increased. Result is statistically highly significant (p<0.001). The mean±SD of systolic blood pressure of control group (Group I) and study group (Group II) were 111.17±8.51 mm of Hg and 127.50±6.14 mm of Hg respectively. In this study the mean±SD of diastolic blood pressure of control group (Group I and study group (Group II) were 75.58±5.05mm of Hg and 87.00±4.89 mm of Hg respectively. In study group (Group II) diastolic blood pressure was increased. Result is statistically highly significant (p<0.001). So the assessment of this parameter is important for early detection and prevention of complication related to combined oral contraceptive pill use for leading a healthy life.
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Affiliation(s)
- T Sharmin
- Dr Tania Sharmin, Lecturer, Department of Physiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Rukunuzzaman M, Khatun N, Nessa A, Wahed F, Sharmin A, Meherubin I, Habiba U, Afroz L, Akhter T, Sharmin T, Yeasmin F. Study on Body Mass Index, Serum Total Cholesterol and Serum Triglycerides in Adult Male Hypertensive Patients. Mymensingh Med J 2023; 32:44-48. [PMID: 36594299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Hypertension or elevated blood pressure is a serious medical condition that significantly increases the risks of heart, brain, kidney and other diseases. An estimated 1.28 billion adults aged 30-79 years worldwide have hypertension, most (two-thirds) living in low- and middle-income countries. An estimated 46.0% of adults with hypertension are unaware that they have the condition. In Bangladesh, 21.3 million of the adult population has hypertension and that is 21.0% of total population. About half of them (48.7%) with hypertension are diagnosed and 34.9% are under treatment. One of the global targets for non communicable diseases is to reduce the prevalence of hypertension by 33.0% between 2010 and 2030. This study was done to evaluate the effects of hypertension and to find out the major complications occurring due to hypertension. This analytical type of cross sectional study was carried out in the Department of Physiology, Mymensingh Medical College, Mymensingh, Bangladesh from January 2021 to December 2021. A total number of 120 male subjects, age ranged from 20-59 years was included in this study. Among them, sixty (60) hypertensive subjects were taken as study group (Group II) and sixty (60) ages matched normotensive adult male subjects were taken as control group (Group I). The results were calculated and analyzed by using Statistical package for social science (SPSS). Anthropometric measurements such as height and weight were taken in meter and kilogram respectively. Systolic and diastolic blood pressure were measured by Aneroid Sphygmomanometer (ALPK2, Japan), laboratory analysis of fasting serum total cholesterol by CHOD-POD method, fasting serum triglycerides by GPO-POD method. In this study we found that in study group Mean±SD of body mass index (29.36±2.60, p<0.001), fasting serum total cholesterol (232.05±11.18, p<0.001) and fasting serum triglycerides (180.67±19.44, p<0.001) which were significantly increased with comparison to control group. It's concluded from this study we recommended that routine estimation of these parameters is important for prevention of complication related to hypertension for leading a healthy life.
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Affiliation(s)
- M Rukunuzzaman
- Dr Mohammad Rukunuzzaman, M Phil Student (Final Part), Physiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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8
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Afroz L, Nessa A, Tanvir IA, Azad AB, Sharmin A, Yeasmin F, Mehrubin I, Zaman R, Akhter T, Naznen F, Sharmin T, Yeasmin F. Status of Serum Ferritin Level among Iron Deficiency Anemic Adolescent Girls in Bangladesh. Mymensingh Med J 2022; 31:891-893. [PMID: 36189528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Adolescence explained as a period of age between 10 to 19 years. This is a major contributing period to build up the health of girls. Ferritin is an intracellular protein that contains iron and releases it in a controlled fashion and it reflects body iron stores and systemic inflammation during adolescent period. It is considered the best single test for the diagnosis of iron deficiency anemia during adolescent because its concentration is directly proportional to total body iron stores in adolescent period. This study was done in the Department of Physiology, Mymensingh Medical College, Mymensingh, Bangladesh to evaluate the changes of serum ferritin levels among iron deficient anemic adolescent girls in comparison to healthy adolescent girls in Bangladesh. This was a cross sectional, prospective, analytical type of study. This study ranged from 10-19 years of adolescent girls. Seventy (70) healthy adolescent girls, as control group (Group I). Seventy (70) iron deficiency anemic adolescent girls as study group (Group II). Serum ferritin was estimated by Micro-particle Enzyme Immunoassay Test Kit. Data were expressed as mean (±SD). Statistical significance of difference among the Group I and Group II were calculated by unpaired students 't' test. The mean±SD level of serum ferritin among Group I and Group II were 26.22±4.03μg/L and 13.33±3.18μg/L respectively. Mean values ±SD of serum ferritin significantly lower in (Group II) in comparison with (Group I). Higher numbers of adolescent girls are still suffering from anemia along with low level of serum ferritin in Bangladesh. For combat this situation, immediate, sustainable and long term public health intervention and nutritional supplementation must be required.
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Affiliation(s)
- L Afroz
- Dr Lily Afroz, Lecturer, Department of physiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Naznen F, Nessa A, Parveen S, Sharmin A, Afroz L, Mehrubin F, Akhter T, Sharmin T, Khan TI. Study of Serum Troponin-I Level in Non-diabetic Hyperglycemic ST Elevation Myocardial Infarction Patients. Mymensingh Med J 2022; 31:581-585. [PMID: 35780336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The most common cause of premature death in developing countries like Bangladesh is ischaemic heart disease. Cardiac troponin-I (cTnI) is 100 percent tissue specific for the myocardium which has been shown to be a very sensitive and specific biomarker for acute myocardial infarction. As acute myocardial infarction is a stressful condition so, plasma glucose level may also increase in this condition which is stress hyperglycemia and also plasma glucose level may be used for prediction of outcome as it is a cheap and easy available test. The aim of the study is to investigate the impact of the elevation of troponin-I level with plasma glucose level of non-diabetic patients in ST-elevation myocardial infarction. This study which was comparative type of analytical and cross- sectional study carried out in the Department of Physiology, Mymensingh Medical College, Mymensingh, Bangladesh from January 2021 to December 2021. Data was collected from Cardiology Department of Mymensingh Medical College Hospital, Mymensingh. A total number of 70 subjects participated in this study and were grouped as normoglycemic ST elevation myocardial infarction- Control group (Group I) and non-diabetic hyperglycemic ST elevation myocardial infarction- Study group (Group II). The results were calculated and analyzed by using SPSS. Serum troponin-I was measured by Fluorescence Immunoassay (FIA) and plasma glucose estimated by GOD-PAP method. Data were expressed in mean±SD and statistical significance of difference among the groups were calculated by unpaired Student's 't' test. The correlation between different parameter was done by Pearson's correlation coefficient test. In this study, the result suggests that there is significant positive association between serum troponin-I and plasma glucose level in study group (hyperglycemic non-diabetic STEMI) in comparison to control group (normoglycemic STEMI). So, by this study we recommend that routine estimation of these parameters is important for prevention of complications related to acute myocardial infarction.
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Affiliation(s)
- F Naznen
- Dr Farhana Naznen, M Phil (Final Part), Department of Physiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Akhter T, Nessa A, Hasan MR, Sharmin A, Yeasmin F, Afroz L, Rukunuzzaman M, Naznen F, Sharmin T. Study on Body Mass Index and Serum Calcium Level in Postmenopausal Women. Mymensingh Med J 2022; 31:367-371. [PMID: 35383752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Menopause is one of the natural parts of women's life when menstrual cycle stops due to lack of estrogen, which occurs in middle age. Various health problems occur in this period which hampers quality of life. This study was done to evaluate the changes of body mass index and serum calcium level in post-menopausal women in comparison to reproductive women. This cross-sectional analytical type of study was done in the Department of Physiology, Mymensingh Medical College, Mymensingh, Bangladesh from January 2021 to December 2021. A total number of 140 female subjects age ranged from 25-65 years were included in this study. Among them 70 (seventy) postmenopausal woman (45-65 years) were taken as study group (Group II) and 70 (seventy) reproductive women (25-45 years) were taken as control group (Group I). Body mass index was measured by Anthropometric measurements such as height and weight taken in meter and kilogram respectively and Serum calcium level was measured by colorimetric method with O-Cresolftalein-complexone (OCC). Data were expressed as mean (±SD) and statistical significance of difference among the group was calculated by unpaired Student's 't' test. The mean±SD of BMI of Group I and Group II were 23.05±4.43 kg/m² and 29.01±3.12 kg/m² respectively. The mean±SD of body mass index is significantly higher in study group in comparison with control group. Serum calcium of Group I and Group II were 10.95±0.77 mg/dl and 7.99±0.55 mg/dl respectively. The mean±SD of serum calcium level was significantly lower in study group in comparison with control group. Post-menopausal women with low serum calcium level have a chance of development of osteoporosis. So, assessment of this parameter is important for early detection and prevention of complication related to low serum calcium level for leading a sound life.
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Affiliation(s)
- T Akhter
- Dr Tania Akhter, M Phil (Physiology) Final Part, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Jahan M, Bhattacharjee A, Rahmat R, Islam SMR, Akhter T, Ahammad I, Hossain MU, Munshi SU, Salimullah M. Genomic Surveillance of SARS-CoV-2 Viruses Collected during the Ending Phase of the First Wave of the COVID-19 Pandemic in Bangladesh. Microbiol Resour Announc 2021; 10:e0049621. [PMID: 34292071 PMCID: PMC8297457 DOI: 10.1128/mra.00496-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 06/15/2021] [Indexed: 11/30/2022] Open
Abstract
Mutations, deletions, and the emergence of new variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) may pose a serious health threat. Here, we report the genome sequences of SARS-CoV-2 viruses that were collected from SARS-CoV-2-infected patients during the end phase of the first wave of the COVID-19 pandemic in Dhaka, Bangladesh.
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Affiliation(s)
- Munira Jahan
- Department of Virology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh
| | - Arittra Bhattacharjee
- Bioinformatics Division, National Institute of Biotechnology, Ganakbari, Ashulia, Savar, Dhaka, Bangladesh
| | - Raad Rahmat
- Biotechnology Program, Department of Mathematics and Natural Sciences, School of Data and Sciences, BRAC University, Mohakhali, Dhaka, Bangladesh
| | - S. M. Rashedul Islam
- Department of Virology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh
| | - Tahmina Akhter
- Department of Virology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh
| | - Ishtiaque Ahammad
- Bioinformatics Division, National Institute of Biotechnology, Ganakbari, Ashulia, Savar, Dhaka, Bangladesh
| | - Mohammad Uzzal Hossain
- Bioinformatics Division, National Institute of Biotechnology, Ganakbari, Ashulia, Savar, Dhaka, Bangladesh
| | - Saif Ullah Munshi
- Department of Virology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh
| | - M. Salimullah
- Molecular Biotechnology Division, National Institute of Biotechnology, Ganakbari, Ashulia, Savar, Dhaka, Bangladesh
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Gunnarsdottir J, Akhter T, Högberg U, Cnattingius S, Wikström AK. Elevated diastolic blood pressure until mid-gestation is associated with preeclampsia and small-for-gestational-age birth: a population-based register study. BMC Pregnancy Childbirth 2019; 19:186. [PMID: 31138157 PMCID: PMC6537437 DOI: 10.1186/s12884-019-2319-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 04/25/2019] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Gestational hemodynamic adaptations, including lowered blood pressure (BP) until mid-gestation, might benefit placental function. We hypothesized that elevated BP from early to mid-gestation increases risks of preeclampsia and small-for-gestational-age birth (SGA), especially in women who also deliver preterm (< 37 weeks). METHODS In 64,490 healthy primiparous women, the change in systolic and diastolic BP from early to mid-gestation was categorized into lowered (≥ 0 mmHg decreased), and elevated (≥ 1 mmHg increase). Women with chronic hypertension, chronic renal disease, pre-gestational diabetes and systemic lupus erythematosus were excluded. Risks of preeclampsia and SGA birth were estimated by logistic regression, presented with adjusted odds ratio (aOR) and 95% confidence intervals (CI). Further, the effect of BP change in combination with stage 1 hypertension (systolic BP 130-139 mmHg or diastolic BP 80-89 mmHg) in early gestation was estimated. RESULTS Compared to women with lowered diastolic BP from early to mid-gestation, those with elevated diastolic BP had increased risks of preeclampsia (aOR: 1.8 [1.6-2.0]) and SGA birth (aOR: 1.3 [1.2-1.5]). The risk estimates were higher for preeclampsia and SGA when combined with preterm birth (aORs: 2.2 [1.8-2.8] and 2.3 [1.8-3.0], respectively). The highest rate of preeclampsia (9.9%) was seen in women with stage 1 hypertension in early gestation and a diastolic BP that was elevated until mid-gestation. This was three times the risk, compared to women with normal BP in early gestation and a diastolic BP that was decreased until mid-gestation. The association between elevated systolic BP from early to mid-gestation and preeclampsia was weak, and no significant association was found between changes in systolic BP and SGA births. CONCLUSION Elevated diastolic BP from early to mid-gestation was associated with increased risks of preeclampsia and SGA, especially for women also delivering preterm. The results may imply that the diastolic BP starts to increase around mid-gestation in women later developing placental dysfunction disorders.
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Affiliation(s)
- J Gunnarsdottir
- Department of Women's and Children's Health, Uppsala University, SE-75185, Uppsala, Sweden.
| | - T Akhter
- Department of Women's and Children's Health, Uppsala University, SE-75185, Uppsala, Sweden
| | - U Högberg
- Department of Women's and Children's Health, Uppsala University, SE-75185, Uppsala, Sweden
| | - S Cnattingius
- Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - A K Wikström
- Department of Women's and Children's Health, Uppsala University, SE-75185, Uppsala, Sweden.,Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
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13
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Akhter T, Layton A. Impact of shifting epithelial Na
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transport on renal medullary oxygen tension: Modeling and analysis. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.748.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tahmina Akhter
- Department of Applied MathematicsUniversity of WaterlooWaterlooONCanada
| | - Anita Layton
- Department of Applied MathematicsUniversity of WaterlooWaterlooONCanada
- Department of MathematicsDuke UniversityDurhamNC
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Drobin K, Assadi G, Hong MG, Andersson E, Fredolini C, Forsström B, Reznichenko A, Akhter T, Ek WE, Bonfiglio F, Hansen MB, Sandberg K, Greco D, Repsilber D, Schwenk JM, D’Amato M, Halfvarson J. Targeted Analysis of Serum Proteins Encoded at Known Inflammatory Bowel Disease Risk Loci. Inflamm Bowel Dis 2019; 25:306-316. [PMID: 30358838 PMCID: PMC6327232 DOI: 10.1093/ibd/izy326] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND Few studies have investigated the blood proteome of inflammatory bowel disease (IBD). We characterized the serum abundance of proteins encoded at 163 known IBD risk loci and tested these proteins for their biomarker discovery potential. METHODS Based on the Human Protein Atlas (HPA) antibody availability, 218 proteins from genes mapping at 163 IBD risk loci were selected. Targeted serum protein profiles from 49 Crohn's disease (CD) patients, 51 ulcerative colitis (UC) patients, and 50 sex- and age-matched healthy individuals were obtained using multiplexed antibody suspension bead array assays. Differences in relative serum abundance levels between disease groups and controls were examined. Replication was attempted for CD-UC comparisons (including disease subtypes) by including 64 additional patients (33 CD and 31 UC). Antibodies targeting a potentially novel risk protein were validated by paired antibodies, Western blot, immuno-capture mass spectrometry, and epitope mapping. RESULTS By univariate analysis, 13 proteins mostly related to neutrophil, T-cell, and B-cell activation and function were differentially expressed in IBD patients vs healthy controls, 3 in CD patients vs healthy controls and 2 in UC patients vs healthy controls (q < 0.01). Multivariate analyses further differentiated disease groups from healthy controls and CD subtypes from UC (P < 0.05). Extended characterization of an antibody targeting a novel, discriminative serum marker, the laccase (multicopper oxidoreductase) domain containing 1 (LACC1) protein, provided evidence for antibody on-target specificity. CONCLUSIONS Using affinity proteomics, we identified a set of IBD-associated serum proteins encoded at IBD risk loci. These candidate proteins hold the potential to be exploited as diagnostic biomarkers of IBD.
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Affiliation(s)
- Kimi Drobin
- Affinity Proteomics, SciLifeLab, School of Biotechnology, KTH, Royal Institute of Technology, Stockholm, Sweden
| | - Ghazaleh Assadi
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Mun-Gwan Hong
- Affinity Proteomics, SciLifeLab, School of Biotechnology, KTH, Royal Institute of Technology, Stockholm, Sweden
| | - Eni Andersson
- Affinity Proteomics, SciLifeLab, School of Biotechnology, KTH, Royal Institute of Technology, Stockholm, Sweden
| | - Claudia Fredolini
- Affinity Proteomics, SciLifeLab, School of Biotechnology, KTH, Royal Institute of Technology, Stockholm, Sweden
| | - Björn Forsström
- Affinity Proteomics, SciLifeLab, School of Biotechnology, KTH, Royal Institute of Technology, Stockholm, Sweden
| | - Anna Reznichenko
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Tahmina Akhter
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Weronica E Ek
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Ferdinando Bonfiglio
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
- Department of Gastrointestinal and Liver Diseases, Biodonostia Health Research Institute, San Sebastián, Spain
| | - Mark Berner Hansen
- AstraZeneca R&D Mölndal, Innovative and Global Medicines, Mölndal, Sweden
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Kristian Sandberg
- Science for Life Laboratory, Drug Discovery & Development Platform & Organic Pharmaceutical Chemistry, Department of Medicinal Chemistry, Uppsala Biomedical Center, Uppsala University, Uppsala, Sweden
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Dario Greco
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Dirk Repsilber
- School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Jochen M Schwenk
- Affinity Proteomics, SciLifeLab, School of Biotechnology, KTH, Royal Institute of Technology, Stockholm, Sweden
| | - Mauro D’Amato
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
- BioDonostia Health Research Institute, San Sebastian and IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
| | - Jonas Halfvarson
- Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Address correspondence to: Jonas Halfvarson, PhD, Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, SE 70182, Örebro, Sweden ()
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15
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Akhter T, Wikström G, Larsson M, Bondesson U, Hedeland M, Naessen T. Dimethylarginines correlate to common carotid artery wall layer dimensions and cardiovascular risk factors in pregnant women with and without preeclampsia. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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16
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Akhter T, Wikström A, Larsson M, Larsson A, Wikström G, Naessen T. Association between angiogenic factors and signs of arterial aging in women with pre-eclampsia. Ultrasound Obstet Gynecol 2017; 50:93-99. [PMID: 27256927 PMCID: PMC5516159 DOI: 10.1002/uog.15981] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 05/07/2016] [Accepted: 05/24/2016] [Indexed: 06/05/2023]
Abstract
OBJECTIVE Pre-eclampsia (PE) is associated with an increased risk of cardiovascular disease later in life. In cases with PE there is a substantial increase in levels of the antiangiogenic factor soluble fms-like tyrosine kinase-1 (sFlt-1) and decreased levels of the proangiogenic factor placental growth factor (PlGF). Elevated levels of sFlt-1 are also found in individuals with cardiovascular disease. The aims of this study were to assess levels of sFlt-1, PlGF and the sFlt-1/PlGF ratio and their correlation with signs of arterial aging by measuring the common carotid artery (CCA) intima and media thicknesses and their ratio (I/M ratio) in women with and without PE. METHODS Serum sFlt-1 and PlGF levels were measured using commercially available enzyme-linked immunosorbent assay kits, and CCA intima and media thicknesses were estimated using high-frequency (22-MHz) ultrasonography in 55 women at PE diagnosis and in 64 women with normal pregnancy at a similar gestational age, with reassessment at 1 year postpartum. RESULTS During pregnancy, higher levels of sFlt-1, lower levels of PlGF, a thicker intima, a thinner media and a higher I/M ratio of the CCA were found in women with PE vs controls (all P < 0.0001). Further, sFlt-1 and the sFlt-1/PlGF ratio were positively correlated with intima thickness and I/M ratio (all P < 0.0001). At 1 year postpartum, levels of sFlt-1 and the sFlt-1/PlGF ratio had decreased in both groups; however, their levels in the PE group were still higher than in the controls (P = 0.001 and < 0.0001, respectively). Levels of sFlt-1 and the sFlt-1/PlGF ratio remained positively correlated with intima thickness and I/M ratio at 1 year postpartum. CONCLUSIONS Higher sFlt-1 levels and sFlt-1/PlGF ratio in women with PE were positively associated with signs of arterial aging during pregnancy. At 1 year postpartum, sFlt-1 levels and the sFlt-1/PlGF ratio were still higher in the PE group and were associated with the degree of arterial aging. © 2016 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of the International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- T. Akhter
- Department of Women's and Children's Health, Section of Obstetrics and GynaecologyUppsala UniversityUppsalaSweden
| | - A.‐K. Wikström
- Department of Women's and Children's Health, Section of Obstetrics and GynaecologyUppsala UniversityUppsalaSweden
| | - M. Larsson
- Department of Women's and Children's Health, Section of Obstetrics and GynaecologyUppsala UniversityUppsalaSweden
| | - A. Larsson
- Clinical Chemistry, Department of Medical SciencesUppsala UniversityUppsalaSweden
| | - G. Wikström
- Cardiology, Department of Medical SciencesUppsala UniversityUppsalaSweden
| | - T. Naessen
- Department of Women's and Children's Health, Section of Obstetrics and GynaecologyUppsala UniversityUppsalaSweden
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17
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Akhter T, Cahill A, Donegan T, Shellikeri S, Vatsky S, Krishnamurthy G, Keller M, Srinivasan A. Percutaneous biopsy and radiofrequency ablation for diagnosis and treatment of intraarticular osteoid osteomas at a single pediatric institution. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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18
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Akhter T, Larsson M, Wikström AK, Naessen T. Thicknesses of individual layers of artery wall indicate increased cardiovascular risk in severe pre-eclampsia. Ultrasound Obstet Gynecol 2014; 43:675-680. [PMID: 24375803 DOI: 10.1002/uog.13289] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Revised: 12/05/2013] [Accepted: 12/11/2013] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To assess whether thicknesses of the intima and media in the common carotid artery (CCA) and the intima/media ratio (I/M) indicate an increased cardiovascular risk in non-pregnant women with a history of previous severe pre-eclampsia. METHODS Thicknesses of the CCA intima and media layers were measured using non-invasive high-frequency (22 MHz) ultrasound in 42 women with a history of severe pre-eclampsia and 44 women with previous normal pregnancy. RESULTS Women with a history of severe pre-eclampsia had a thicker CCA intima and a higher I/M than had women with previous normal pregnancy, also after adjustment for mean arterial pressure, body mass index and CCA intima-media thickness (IMT) (all P < 0.0001). CCA-IMT did not differ significantly between groups. In receiver-operating characteristics curve analysis, intima thickness and I/M clearly discriminated between women with and those without previous pre-eclampsia (area under the receiver-operating characteristics curve (AUC), 0.98 and 0.93), whereas CCA-IMT did not (AUC, 0.52). CONCLUSIONS CCA individual intima and media thicknesses as well as I/M, but not CCA-IMT, reflect the known increased long-term cardiovascular risk of pre-eclampsia. Estimation of individual CCA layers using high-frequency ultrasound appears preferable to measuring CCA-IMT for investigating arterial effects and the increased cardiovascular risk in women with a history of severe pre-eclampsia.
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Affiliation(s)
- T Akhter
- Department of Women's and Children's Health, Section for Obstetrics and Gynecology, Uppsala University, Uppsala, Sweden
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Abstract
In the present study, a novel diamine 1,4-bis[4-(hydrazonomethyl)phenoxy]butane (4-BHPB) has been successfully synthesized by a facile method.
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Affiliation(s)
- T. Akhter
- Department of Chemical and Biomolecular Engineering (BK21+ Graduate Program)
- KAIST
- Daejeon 305-701, Republic of Korea
| | - O. Ok Park
- Department of Chemical and Biomolecular Engineering (BK21+ Graduate Program)
- KAIST
- Daejeon 305-701, Republic of Korea
| | - H. M. Siddiqi
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad 45320, Pakistan
| | - S. Saeed
- Department of Metallurgy and Materials Engineering
- Pakistan Institute of Engineering and Applied Sciences (PIEAS)
- Islamabad 45650, Pakistan
- Department of Liberal Arts and Sciences
- Virginia Commonwealth University in Qatar
| | - Khaled Mohammad Saoud
- Department of Liberal Arts and Sciences
- Virginia Commonwealth University in Qatar
- Doha, Qatar
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Angeletti D, Albrecht L, Blomqvist K, Quintana MDP, Akhter T, Bächle SM, Sawyer A, Sandalova T, Achour A, Wahlgren M, Moll K. Plasmodium falciparum rosetting epitopes converge in the SD3-loop of PfEMP1-DBL1α. PLoS One 2012; 7:e50758. [PMID: 23227205 PMCID: PMC3515580 DOI: 10.1371/journal.pone.0050758] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 10/25/2012] [Indexed: 11/26/2022] Open
Abstract
The ability of Plasmodium falciparum parasitized RBC (pRBC) to form rosettes with normal RBC is linked to the virulence of the parasite and RBC polymorphisms that weaken rosetting confer protection against severe malaria. The adhesin PfEMP1 mediates the binding and specific antibodies prevent sequestration in the micro-vasculature, as seen in animal models. Here we demonstrate that epitopes targeted by rosette disrupting antibodies converge in the loop of subdomain 3 (SD3) which connects the h6 and h7 α-helices of PfEMP1-DBL1α. Both monoclonal antibodies and polyclonal IgG, that bound to epitopes in the SD3-loop, stained the surface of pRBC, disrupted rosettes and blocked direct binding of recombinant NTS-DBL1α to RBC. Depletion of polyclonal IgG raised to NTS-DBL1α on a SD3 loop-peptide removed the anti-rosetting activity. Immunizations with recombinant subdomain 1 (SD1), subdomain 2 (SD2) or SD3 all generated antibodies reacting with the pRBC-surface but only the sera of animals immunized with SD3 disrupted rosettes. SD3-sequences were found to segregate phylogenetically into two groups (A/B). Group A included rosetting sequences that were associated with two cysteine-residues present in the SD2-domain while group B included those with three or more cysteines. Our results suggest that the SD3 loop of PfEMP1-DBL1α is an important target of anti-rosetting activity, clarifying the molecular basis of the development of variant-specific rosette disrupting antibodies.
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Affiliation(s)
- Davide Angeletti
- Department of Microbiology, Tumor- and Cellbiology (MTC), Karolinska Institutet, Stockholm, Sweden
| | - Letusa Albrecht
- Department of Microbiology, Tumor- and Cellbiology (MTC), Karolinska Institutet, Stockholm, Sweden
| | - Karin Blomqvist
- Department of Microbiology, Tumor- and Cellbiology (MTC), Karolinska Institutet, Stockholm, Sweden
| | - María del Pilar Quintana
- Department of Microbiology, Tumor- and Cellbiology (MTC), Karolinska Institutet, Stockholm, Sweden
- Escuela de Medicina y Ciencias de la Salud, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Tahmina Akhter
- Department of Microbiology, Tumor- and Cellbiology (MTC), Karolinska Institutet, Stockholm, Sweden
| | - Susanna M. Bächle
- Center for Infectious Medicine, Department of Medicine, Karolinska University Hospital Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Alan Sawyer
- EMBL Monoclonal Antibodies Core Facility, Monterotondo-Scalo (RM), Italy
| | - Tatyana Sandalova
- Center for Infectious Medicine, Department of Medicine, Karolinska University Hospital Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Adnane Achour
- Center for Infectious Medicine, Department of Medicine, Karolinska University Hospital Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Mats Wahlgren
- Department of Microbiology, Tumor- and Cellbiology (MTC), Karolinska Institutet, Stockholm, Sweden
- * E-mail: (MW); (KM)
| | - Kirsten Moll
- Department of Microbiology, Tumor- and Cellbiology (MTC), Karolinska Institutet, Stockholm, Sweden
- * E-mail: (MW); (KM)
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22
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Leonard D, Akhter T, Nordmark G, Rönnblom L, Naessen T. Increased carotid intima thickness and decreased media thickness in premenopausal women with systemic lupus erythematosus: an investigation by non-invasive high-frequency ultrasound. Scand J Rheumatol 2011; 40:279-82. [DOI: 10.3109/03009742.2011.556146] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Syed M, Shaikh A, Akhter T, Morar K, Cortoss S. Abstract No. 199: Does age of fracture affect the outcome of vertebroplasty? Results from a prospective multi-center FDA-IDE study. J Vasc Interv Radiol 2011. [DOI: 10.1016/j.jvir.2011.01.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Mahmood K, Naqvi IH, Talib A, Salkeen S, Abbasi B, Akhter T, Iftikhar N, Ali A. Clinical course and outcome of snake envenomation at a hospital in Karachi. Singapore Med J 2010; 51:300-305. [PMID: 20505907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
INTRODUCTION Snake envenomation is a frequently reported medical emergency at the Civil Hospital Karachi, Pakistan, [corrected] thus obviating the need to assess the patterns of the clinical course and outcome of snake envenomation cases. METHODS The demographic characteristics, clinical signs and symptoms, laboratory findings, treatment and outcome of 80 victims of snake bite were recorded. These patients were admitted to the Civil Hospital Karachi between January 2006 and September 2007. The data of all the cases was analysed statistically using the Statistical Package for the Social Sciences version 11.0. RESULTS The majority of the 80 victims of snake bite were male (80 percent) and 20 percent were female. The mean age of the patients was 33.3 years. The main type of envenomation was vasculotoxic (92.5 percent), and none were neurotoxic or myotoxic. Both local and systemic clinical features of envenomation were present. Bleeding was reported in 43.8 percent of the patients. 71.3 percent of the patients showed coagulopathy of defibrination and the anti-coagulant type. All patients received anti-snake venom. Five (6.3 percent) patients in the study died. CONCLUSION The most common type of snake envenomation in this part of the province of Sindh is vasculotoxic due to the high inhabitancy of Viperidae. High morbidity and mortality rates can be reduced significantly through patient education on the precautions that need to be taken by farmers and field workers against snake bite. Early referral to a well-equipped health facility is necessary, as the mortality rate was high among those patients who arrived late.
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Affiliation(s)
- K Mahmood
- Department of Medicine, Civil Hospital Karachi and Dow University of Health Sciences, Baba-e-Urdu Road, Karachi 7400, Sindh, Pakistan
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Akhter T, Zhao L, Kohda A, Mio K, Kanamaru S, Arisaka F. The neck of bacteriophage T4 is a ring-like structure formed by a hetero-oligomer of gp13 and gp14. Biochim Biophys Acta 2007; 1774:1036-43. [PMID: 17602902 DOI: 10.1016/j.bbapap.2007.05.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2007] [Revised: 05/01/2007] [Accepted: 05/10/2007] [Indexed: 11/26/2022]
Abstract
After packaging of DNA into the head of bacteriophage T4 is completed, a neck is formed at the portal vertex of the head to be ready for the tail attachment. The main components of the neck are gp13 and gp14 (gp: gene product), which consist of 309 and 256 amino acid residues, respectively. In order to elucidate the structure and subunit arrangement in the neck, overexpression systems of gene 13 and gene 14 were constructed and purified to homogeneity. Far-UV circular dichroism (CD) spectra of gp13 and gp14 indicated that gp13 is rich in alpha-helices whereas gp14 is rich in beta-sheets. Sedimentation velocity analysis of gp13 and gp14 revealed that both proteins are present as monomers in solution. The frictional ratios (f/f(0)) of the two proteins indicated that gp14 has a more elongated shape than gp13. Although isolated gp13 and gp14 do not interact with each other when mixed under physiological conditions, they form a hetero-oligomer complex with the stoichiometry of 10:5 after treatment with ammonium sulfate. Electron microscopy of this complex has shown that it forms a ring-like structure of 15 nm in diameter.
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Affiliation(s)
- Tahmina Akhter
- Department of Biomolecular Engineering, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4359-B39 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
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