1
|
Alkadi MM, Hamad A, Ghazouani H, Elshirbeny M, Ali MY, Ghonimi T, Ibrahim R, Abuhelaiqa E, Abou-Samra AB, Al-Malki H, Butt AA. Effectiveness of Messenger RNA Vaccines against SARS-CoV-2 Infection in Hemodialysis Patients: A Case-Control Study. Vaccines (Basel) 2022; 11:vaccines11010049. [PMID: 36679894 PMCID: PMC9863461 DOI: 10.3390/vaccines11010049] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/08/2022] [Accepted: 12/14/2022] [Indexed: 12/28/2022] Open
Abstract
Patients with end-stage kidney disease (ESKD) are at increased risk for SARS-CoV-2 infection and its complications compared with the general population. Several studies evaluated the effectiveness of COVID-19 vaccines in the dialysis population but showed mixed results. The aim of this study was to determine the effectiveness of COVID-19 mRNA vaccines against confirmed SARS-CoV-2 infection in hemodialysis (HD) patients in the State of Qatar. We included all adult ESKD patients on chronic HD who had at least one SARS-CoV-2 PCR test done after the introduction of the COVID-19 mRNA vaccines on 24 December 2020. Vaccinated patients who were only tested before receiving any dose of their COVID-19 vaccine or within 14 days after receiving the first vaccine dose were excluded from the study. We used a test-negative case−control design to determine the effectiveness of the COVID-19 vaccination. Sixty-eight patients had positive SARS-CoV-2 PCR tests (cases), while 714 patients had negative tests (controls). Ninety-one percent of patients received the COVID-19 mRNA vaccine. Compared with the controls, the cases were more likely to be older (62 ± 14 vs. 57 ± 15, p = 0.02), on dialysis for more than one year (84% vs. 72%, p = 0.03), unvaccinated (46% vs. 5%, p < 0.0001), and symptomatic (54% vs. 21%, p < 0.0001). The effectiveness of receiving two doses of COVID-19 mRNA vaccines against confirmed SARS-CoV-2 infection was 94.7% (95% CI: 89.9−97.2) in our HD population. The findings of this study support the importance of using the COVID-19 mRNA vaccine in chronic HD patients to prevent SARS-CoV-2 infection in such a high-risk population.
Collapse
Affiliation(s)
- Mohamad M. Alkadi
- Department of Medicine, Division of Nephrology, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
- Correspondence: ; Tel.: +974-55518771
| | - Abdullah Hamad
- Department of Medicine, Division of Nephrology, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Hafedh Ghazouani
- Department of Quality and Patient Safety, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Mostafa Elshirbeny
- Department of Medicine, Division of Nephrology, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Mohamed Y. Ali
- Department of Medicine, Division of Nephrology, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Tarek Ghonimi
- Department of Medicine, Division of Nephrology, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Rania Ibrahim
- Department of Medicine, Division of Nephrology, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Essa Abuhelaiqa
- Department of Medicine, Division of Nephrology, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Abdul Badi Abou-Samra
- Department of Quality and Patient Safety, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Hassan Al-Malki
- Department of Medicine, Division of Nephrology, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Adeel A. Butt
- Department of Quality and Patient Safety, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
- Departments of Medicine and Population Health Sciences, Weill Cornell Medicine, New York, NY 10065, USA
- Departments of Medicine and Population Health Sciences, Weill Cornell Medicine, Doha P.O. Box 3050, Qatar
| |
Collapse
|
2
|
Begum M, Khan MK, Hossain MT, Ali MY, Alam FS, Dipu SS, Hasan AH, Nasrin M. Disease Pattern among Children attending Pediatric Outpatient Department in Community Based Medical College Hospital, Bangladesh. Mymensingh Med J 2017; 26:863-867. [PMID: 29208876] [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: 06/07/2023]
Abstract
Disease pattern is based on socio-demographic characteristics, comprehensive health care services, and environmental variables like water supply, basic sanitation and housing, illness behavior like quick decision to arrive at health care facility, and treatment behavior like the modality of treatment they receive. The descriptive cross-sectional study was conducted during the period of January 2014 to December 2015. The study was carried out among 310 purposively selected children attended at Pediatric Outpatient department of Community Based Medical College Hospital, Bangladesh. Data were collected by face to face interview of the parents and clinical examination and anthropometric measurement of children using case record form. Mean age of the children was 4.11 years with a SD of 4.35 years, male-female ratio was 1.25:1 with predominance 201(64.84%) of under-five children. The common diseases were 121(39.03%) with Acute Respiratory Infections (ARI), while 43(13.87%) diarrheal diseases, 25(8.06%) each with bronchial asthma and helminthiasis. Other diseases 96(30.97%) include anemia 17(5.48%), urinary tract infection 15 (4.84%), peptic ulcer disease 9(2.90%), enteric fever, oral candidiasis, apthous ulcer of mouth, scabies and vulvovaginitis. Average number of children per family was 2.2 including 251(80.97%) children having sanitary latrine in the family, 297(95.81%) with safe drinking water facilities and 270(87.10%) were fully vaccinated under EPI. More than three fourth 76(24.52%) of the children were underweight, 114(36.77%) were from poor families and 136(43.87%) lived in Kancha house. With the improvement of safe water supply and use of sanitary latrine diseases like diarrhoeal disease and helminthiasis are showing a decreasing trend.
Collapse
Affiliation(s)
- M Begum
- Dr Maksuda Begum, Assistant Professor, Department of Community Medicine, Community Based Medical College, Bangladesh (CBMCB), Mymensingh, Bangladesh
| | | | | | | | | | | | | | | |
Collapse
|
3
|
Ahsan MK, Sakeb N, Ali MY, Awwal MA, Khan SI, Goni MM, Mia MB, Alam MB, Zaman N, Jannat SN. Surgical Outcome of Intradural Spinal Tumors. Mymensingh Med J 2016; 25:514-522. [PMID: 27612900] [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: 06/06/2023]
Abstract
Results of 63 surgically treated intradural spinal tumors between the period of October 2003 and December 2014 at Bangabandhu Sheikh Mujib Medical University (BSMMU) and in our private settings, Dhaka, were analyzed retrospectively. There were 33 males, 30 females with an average age of 52.4 years (13-70 years) and followed up for at least a year. The preoperative symptom with duration, tumors location and intradural space occupancy and the histopathological diagnosis were analyzed. Pain was evaluated by the visual analogue scale (VAS) and the neurologic function was assessed by Nurick's grade. The tumors were located as, thoracic (n=32, 50.79%), lumbar (n=16, 25.39%), cervical (n=05, 07.93%), and junctional (n=10, 15.87%, CervicoThoracic-01, Thoracolumbar-09). The histopathological diagnosis included schwannoma (n=30, 47.7%), meningiomas (n=14, 22.3%), neurofibroma, arachnoid cyst and myxopapillary ependymoma (n=03, 04.76%) each and paraganglioma (n=01, 01.59%). Among the intramedullary tumors, ependymoma (n=03, 04.76%), astrocytoma and epidermoid cyst (n=02, 03.17%), haemangioblastoma, paraganglioma and cavernous haemangioma (n=01, 01.59%) each. The VAS score was reduced in all cases from 8.0±1.2 to 1.2±0.8 (p<0.003) and the Nurick's grade was improved in all cases from 3.0±1.3 to 1.0±0.0 (p<0.005). The preoperative neurological deficit improved within 8 postoperative weeks in most cases and within 1 postoperative year in all cases. Complications included cerebrospinal fluid leakage, parasthesia and further neurological deterioration (Astrocytoma) (n=02, 03.17%) and dependant bedsore and recurrence (Ependymoma) (n=01, 01.59%). Aggressive surgical excision potentially minimizes neurologic morbidity and improved outcome except intramedullary tumors where initial treatment consists of maximum safe surgical resection or biopsy.
Collapse
Affiliation(s)
- M K Ahsan
- Dr Md Kamrul Ahsan, Associate Professor of Spinal Surgery, Department of Orthopaedic Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
| | | | | | | | | | | | | | | | | | | |
Collapse
|
4
|
Noman AS, Uddin M, Rahman MZ, Nayeem MJ, Alam SS, Khatun Z, Wahiduzzaman M, Sultana A, Rahman ML, Ali MY, Barua D, Ahmed I, Islam MS, Aboussekhra A, Yeger H, Farhat WA, Islam SS. Overexpression of sonic hedgehog in the triple negative breast cancer: clinicopathological characteristics of high burden breast cancer patients from Bangladesh. Sci Rep 2016; 6:18830. [PMID: 26727947 PMCID: PMC4700415 DOI: 10.1038/srep18830] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 11/27/2015] [Indexed: 12/12/2022] Open
Abstract
Dysregulation of Hedgehog (Hh) signaling pathway has been documented in mammary gland development and breast cancer (BC) progression. Despite the remarkable progress in therapeutic interventions, BC related mortality in Bangladesh increased in the last decade. Triple negative breast cancer (TNBC) still presents a critical therapeutic challenge. Thus effective targeted therapy is urgently needed. In this study, we report the clinicopathological characteristics and prognosis of BC patients from Bangladesh. Routine immunohistochemical analysis and high throughput RNA-Seq data from the TCGA library were used to analyze the expression pattern and association of high and low level of Shh expression in a collection of BC patients with a long-term follow-up. High levels of Shh were observed in a subset of BC tumors with poor prognostic pathological features. Higher level of Shh expression correlated with a significantly poorer overall survival of patients compared with patients whose tumors expressed a low level of Shh. These data support the contention that Shh could be a novel biomarker for breast cancer that is involved in mediating the aggressive phenotype of BC. We propose that BC patients exhibiting a higher level of Shh expression, representing a subset of BC patients, would be amenable to Shh targeted therapy.
Collapse
Affiliation(s)
- A S Noman
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - M Uddin
- The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON, Canada
| | - M Z Rahman
- Department of Pathology, Chittagong Medical College Hospital, Chittagong, Bangladesh
| | - M J Nayeem
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - S S Alam
- Department of Genetic Engineering and Biotechnology, University of Chittagong, Chittagong, Bangladesh
| | - Z Khatun
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - M Wahiduzzaman
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - A Sultana
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - M L Rahman
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - M Y Ali
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - D Barua
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - I Ahmed
- Department of Pathology, Chittagong Medical College Hospital, Chittagong, Bangladesh
| | - M S Islam
- Department of Pathology, Chittagong Medical College Hospital, Chittagong, Bangladesh
| | - A Aboussekhra
- Cancer Biology and Experimental Therapeutic Section, Division of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh, KSA
| | - H Yeger
- Developmental and Stem Cell Biology, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
| | - W A Farhat
- Developmental and Stem Cell Biology, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
| | - S S Islam
- Cancer Biology and Experimental Therapeutic Section, Division of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh, KSA.,Developmental and Stem Cell Biology, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
| |
Collapse
|
5
|
Ahmed EM, Elkholy MA, Ali MY, Abd Elwahed MS, Elkholy EA. Expression of Ki-67 and Bcl-2 in abortion material. Egyptian Journal of Pathology 2015; 35:139-143. [DOI: 10.1097/01.xej.0000472880.88645.8c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
6
|
Afrose R, Saha SK, Banu LA, Ahmed AU, Shahidullah AS, Gani A, Sultana S, Kabir MR, Ali MY. Antibacterial Effect of Curcuma longa (Turmeric) Against Staphylococcus aureus and Escherichia coli. Mymensingh Med J 2015; 24:506-515. [PMID: 26329948] [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: 06/05/2023]
Abstract
This observational study was conducted during the period from July 2010 to June 2011 in the Department of Pharmacology in the collaboration of Department of Microbiology, Mymensingh Medical College, Mymensingh to determine the profile of antibacterial effect of Crude Turmeric paste aqueous turmeric extract, and standard antibiotic Amikacin against Staphylococcus aureus and Escherichia coli. Three separate experiments were done e.g. (Expt- I) Inhibitory effect of Crude Turmeric paste incorporated into nutrient agar (NA) media, (Expt- II) Minimum inhibitory concentration of (a) Aqueous Turmeric extract and (b) Amikacin by broth dilution technique and (Expt-III) their subculture study in nutrient agar (NA) media for confirmation of respective results of previous experiments. Inhibitory effects were observed against the growth of Staph Aureus and Esch coli at 10% and 30% respectively of Crude Turmeric paste incorporated into NA media. The broth dilution technique was followed to determine the MIC of Aqueous Turmeric extract and Amikacin. The MIC of Aqueous Turmeric extract was 800 μg/ml against Staph aureus and that against Esch coli was 2000 μg/ml and the MIC of Amikacin was 10 μg/ml for both the bacteria. The MIC of Amikacin was the lowest in comparison to MIC of Aqueous Turmeric extract for complete inhibition of growth of Staph aureus and Esch coli. The subculture study showed similar results with that of previous experiments in terms of inhibitory effects of Crude Turmeric paste and MIC of Aqueous Turmeric extract and Amikacin against all of the organisms studied.
Collapse
Affiliation(s)
- R Afrose
- Dr Rafika Afrose, M Phil Student (Thesis), Department of Pharmacology, Mymensingh Medical College, Mymensingh, Bangladesh
| | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Rahman MG, Choudhury AI, Sakeb N, Islam KM, Karim R, Ali MY, Yiasmeen S. Evaluation of the outcome of replacement hemiarthroplasty by uncemented bipolar prosthesis in displaced fracture neck femur. Mymensingh Med J 2014; 23:461-470. [PMID: 25178597] [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: 06/03/2023]
Abstract
Despite continued discussion regarding the treatment of displaced femoral neck fractures, controversies continue regarding their optimal treatment, including the choice of implant and fixation method. Hemiarthroplasty is one of the option which eliminate concerns about fixation failure, nonunion, and avascular necrosis and has become the choice of surgery among the aged >60. This prospective interventional study was carried out on 28 cases at the Department of Orthopaedic Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), from July 2009 to April 2012 to evaluate cementless, bipolar prosthesis among the active elderly patients. All subjects were evaluated with regard to postoperative clinical, functional and activity outcome (Modified Harris Hip Scoring and Hip Outcome Scoring), intra and post operative complications. One case was dropped from follow up and 22(81.48%) patients were considered to have satisfactory outcome after statistical analysis by chi-square test on at least 12 months follow up records. Although prosthetic stem valgus and periprosthetic fracture developed in 02 cases and 01 patient had sunken prosthesis, uncemented bipolar hemiarthroplasty can give significantly good functional outcomes with minimal complications for displaced intracapsular femoral neck fracture in active elderly patients.
Collapse
Affiliation(s)
- M G Rahman
- Dr Md Golam Rahman, Assistant Professor, Department of Orthopaedic Surgery, Shahabuddin Medical College, Gulshan, Dhaka, Bangladesh
| | | | | | | | | | | | | |
Collapse
|
8
|
Rashid MM, Ahammad MU, Ali MS, Rana MS, Ali MY, Sakib N. Effect of different levels of Dhania seed (Coriandrum sativum) on the performance of broiler. ACTA ACUST UNITED AC 2014. [DOI: 10.3329/bjas.v43i1.19383] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A total of 72 as hatched Cobb 500 broilers were fed ad libitum on a diet with 0 %, 0.5 %, 1.0 % and 1.5 % of coriander seed meal (CSM) to assess its feeding value. Treatment group with 1.5 % of CSM significantly (p<0.05) affected live weight of broilers at the age of 28 and 35 days. Among the dietary groups there is no significant difference in feed intake and feed efficiency. Meat yield characteristics especially abdominal fat level decreased significantly (p<0.01) at 1.5 % level of CSM. Cost of production per kg live broiler decreased when dietary inclusion level was increased. Profit per kg of live broiler was significantly (p<0.05) increased with the increase levels of dietary CSM. These results suggest that the CSM could be considered as a potential natural growth promoter for poultry, and showed the best responses at a 1.5 % level of inclusion. It was concluded that the supplementation of the coriander seed meal to broiler diet had beneficial effects on body weight gain, feed conversion ratio and carcass yield.DOI: http://dx.doi.org/10.3329/bjas.v43i1.19383 Bang. J. Anim. Sci. 2014. 43 (1): 38-44
Collapse
|
9
|
Sabur A, Moudood A, Ali MY, Maleque MA. Investigation of surface roughness in micro-electro discharge machining of nonconductive ZrO2 for MEMS application. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1757-899x/53/1/012090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
10
|
Ahsan MK, Matin T, Ali MI, Ali MY, Awwal MA, Sakeb N. Relationship between physical work load and lumbar disc herniation. Mymensingh Med J 2013; 22:533-540. [PMID: 23982545] [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: 06/02/2023]
Abstract
Lumbar disc herniation (LDH) is a disabling problem. This retrospective case control study was done to evaluate the possible relevance of physical work load with Lumbar Disc Herniation. We have performed this study in the Spinal Surgery Unit of Department of Orthopaedic Surgery at BSMMU, Dhaka from July 2007 to June 2010 where 200 cases with Lumbar Disc Herniation and 200 control subjects matched by age, gender and area of residence were taken and analyzed. Chi-square test was computed for sex, area of residence, type of physical work and effort at work, whereas Odds ratio was computed for physical work load, stress at work and daily working period. The highest odds ratio (OR) was with the physical work load (OR: 03.48, CI: 01.84-06.59), hard work (OR: 03.14, CI: 01.74-05.65) and working period of >8 hours (OR: 01.34, CI: 0.75-02.38). Odds ratio for heavy load carrying at work was 03.48 and less job satisfaction or stress at work was 02.45. There was a statistically significant positive association between cumulative exposure of physical work load and lumbar disc herniation indicating an increased occurrence of herniation in heavy physical work load and occupation requiring harder efforts.
Collapse
Affiliation(s)
- M K Ahsan
- Dr Md Kamrul Ahsan, Associate Professor of Spinal Surgery, Department of Orthopaedic Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), Shahbagh, Dhaka, Bangladesh
| | | | | | | | | | | |
Collapse
|
11
|
Ali MY, Ping CY, Mok YYP, Ling L, Whiteman M, Bhatia M, Moore PK. Regulation of vascular nitric oxide in vitro and in vivo; a new role for endogenous hydrogen sulphide? Br J Pharmacol 2006; 149:625-34. [PMID: 17016507 PMCID: PMC2014646 DOI: 10.1038/sj.bjp.0706906] [Citation(s) in RCA: 271] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND AND PURPOSE The aim of these experiments was to evaluate the significance of the chemical reaction between hydrogen sulphide (H2S) and nitric oxide (NO) for the control of vascular tone. EXPERIMENTAL APPROACH The effect of sodium hydrosulphide (NaHS; H2S donor) and a range of NO donors, such as sodium nitroprusside (SNP), either alone or together, was determined using phenylephrine (PE)-precontracted rat aortic rings and on the blood pressure of anaesthetised rats. KEY RESULTS Mixing NaHS with NO donors inhibited the vasorelaxant effect of NO both in vitro and in vivo. Low concentrations of NaHS or H2S gas in solution reversed the relaxant effect of acetylcholine (ACh, 400 nM) and histamine (100 microM) but not isoprenaline (400 nM). The effect of NaHS on the ACh response was antagonized by CuSO(4) (200 nM) but was unaffected by glibenclamide (10 microM). In contrast, high concentrations of NaHS (200-1600 microM) relaxed aortic rings directly, an effect reduced by glibenclamide but unaffected by CuSO4. Intravenous infusion of a low concentration of NaHS (10 micromol kg(-1) min(-1)) into the anaesthetized rat significantly increased mean arterial blood pressure. L-NAME (25 mg kg(-1), i.v.) pretreatment reduced this effect. CONCLUSIONS AND IMPLICATIONS These results suggest that H2S and NO react together to form a molecule (possibly a nitrosothiol) which exhibits little or no vasorelaxant activity either in vitro or in vivo. We propose that a crucial, and hitherto unappreciated, role of H2S in the vascular system is the regulation of the availability of NO.
Collapse
Affiliation(s)
- M Y Ali
- Department of Pharmacology, Cardiovascular Biology Research Group, Yong Loo Lin School of Medicine, National University of Singapore Singapore, Singapore
| | - C Y Ping
- Department of Pharmacology, Cardiovascular Biology Research Group, Yong Loo Lin School of Medicine, National University of Singapore Singapore, Singapore
| | - Y-YP Mok
- Department of Pharmacology, Cardiovascular Biology Research Group, Yong Loo Lin School of Medicine, National University of Singapore Singapore, Singapore
| | - L Ling
- Department of Pharmacology, Cardiovascular Biology Research Group, Yong Loo Lin School of Medicine, National University of Singapore Singapore, Singapore
| | - M Whiteman
- Department of Biochemistry, Cardiovascular Biology Research Group, Yong Loo Lin School of Medicine, National University of Singapore Singapore, Singapore
| | - M Bhatia
- Department of Pharmacology, Cardiovascular Biology Research Group, Yong Loo Lin School of Medicine, National University of Singapore Singapore, Singapore
| | - P K Moore
- Department of Pharmacology, Cardiovascular Biology Research Group, Yong Loo Lin School of Medicine, National University of Singapore Singapore, Singapore
- Author for correspondence:
| |
Collapse
|
12
|
Taylor HC, Ali MY. Transient ionized hypocalcemia and secondary hyperparathyroidism accompanying acute adrenal insufficiency. Endocr Pract 2004; 4:159-64. [PMID: 15251746 DOI: 10.4158/ep.4.3.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To describe the hitherto unrecognized occurrence of transient ionized hypocalcemia with acute adrenal insufficiency and its therapy. METHODS We present three case reports with documented longitudinal laboratory findings. RESULTS Transient ionized hypocalcemia of acute illness has been noted in children and adults and is associated with increased mortality. Precipitating illnesses include gram-positive and gram-negative sepsis and staphylococcal toxic shock syndrome. We encountered three patients with transient ionized hypocalcemia associated with acute adrenal insufficiency. Similar to severely ill, transiently hypocalcemic patients without adrenal insufficiency, one patient demonstrated 25-hydroxyvitamin D deficiency, a second had minimal magnesium deficiency, and a third had no identifiable underlying abnormality. All three patients exhibited a transient increase in levels of serum intact parathyroid hormone and 1,25-dihydroxyvitamin D in response to ionized hypocalcemia, indicative of temporary secondary hyperparathyroidism. Two of the three patients were treated solely with glucocorticoids and intravenous administration of fluids, whereas the third received minimal intramuscularly administered magnesium and antibiotics in addition. All ultimately demonstrated a return to normal of serum total and ionized calcium, parathyroid hormone, and 1,25-dihydroxyvitamin D with no further treatment, even though one patient remained deficient in 25-hydroxyvitamin D. CONCLUSION On the basis of these cases, we conclude that acute adrenal insufficiency and its treatment must be added to the disorders associated with transient ionized hypocalcemia and that transient secondary hyperparathyroidism is characteristic of at least some of the patients.
Collapse
Affiliation(s)
- H C Taylor
- Division of Endocrinology, Fairview Health System, Lutheran Medical Center, Cleveland, Ohio 44113, USA
| | | |
Collapse
|
13
|
Geissler M, Mohr L, Ali MY, Grimm CF, Ritter M, Blum HE. Immunobiology and gene-based immunotherapy of hepatocellular carcinoma. Z Gastroenterol 2004; 41:1101-10. [PMID: 14648380 DOI: 10.1055/s-2003-44304] [Citation(s) in RCA: 10] [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] [Indexed: 01/08/2023]
Abstract
PURPOSE Hepatocellular carcinoma (HCC) is one of the major malignancies worldwide. For most patients with advanced or multifocal HCC treatment options are limited resulting in a poor prognosis. Several local ablation methods have been developed as minimally invasive strategies for HCC treatment. It is unclear, until now, whether these therapies will significantly improve the poor prognosis of patients with unresectable HCC. Novel therapeutic strategies and a better understanding of HCC imunobiology are, therefore, urgently required. DESIGN The scientific literature since 1970 in all languages cited in Medline was systematically reviewed. RESULTS Until now, a variety of specific and non-specific immunostimulatory strategies against HCC has been applied in preclinical experimental models with some promising results. The molecular characterization of HCC associated tumour antigens such as alpha-fetoprotein (AFP) and the increased understanding of the immunological pathways involved in liver and tumor immunology have paved the way for the design of promising gene-based cancer vaccines. The first phase I and II immunotherapeutic clinical trials based on dendritic cell immunotherapy and peptide vaccines are ongoing in HCC-patients. Clinical trials have, in general, demonstrated the safety of such strategies. Recently, exciting new immunological techniques and tools have been developed which allow to characterize antigen specific T cells at a single-cell level. In future, HCC specific tumor rejection antigens which can be used therapeutically have to be identified using microarray-based analysis. The different therapeutic modalities need to be compared directly resulting in optimised therapeutic approaches and the identification of sub-groups of HCC-patients responding favourably to treatment.
Collapse
Affiliation(s)
- M Geissler
- Department of Medicine II, University Hospital Freiburg, Freiburg, Germany.
| | | | | | | | | | | |
Collapse
|
14
|
Ali MY, Oyama Y, Monreal J, Winter JN, Tallman MS, Williams SF, Singhal S, Gordon LI, Mehta J. Ideal or actual body weight to calculate CD34+ cell doses for autologous hematopoietic stem cell transplantation? Bone Marrow Transplant 2003; 31:861-4. [PMID: 12748662 DOI: 10.1038/sj.bmt.1703955] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The number of CD34+ cells infused influences the speed of hematologic recovery post-transplant. There are limited data on whether ideal (IBW) or actual (ABW) body weight should be used to calculate CD34+ cell dose. We compared the correlation between recovery to 0.5 x 10(9)/l neutrophils and the CD34+ cell dose based upon ABW as well as IBW in 87 patients autografted for cancer. ABW was >or=25% over IBW in 43% of patients. The median number of CD34+ cells administered was 3.6 x 10(6)/kg ABW and 4.2 x 10(6)/kg IBW. The time to neutrophil recovery was 8-15 days (median 10). There was a stronger inverse correlation between CD34+ cell dose/IBW and neutrophil recovery (r(2)=0.308; P<0.0001) than between CD34+ cell dose/ABW and neutrophil recovery (r(2)=0.267; P<0.0001). The median time to neutrophil recovery was comparable for those receiving >or=2 x 10(6)/kg CD34+ cells/kg IBW as well as ABW (10 days) and those receiving >or=2 x 10(6)/kg CD34+ cells/kg IBW but <2/kg ABW (10 days), but was significantly slower for those receiving <2 x 10(6)/kg CD34+ cells/kg IBW (12 days). These data show that the CD34+ cell dose based on IBW is a better predictor of neutrophil recovery after autotransplantation.
Collapse
Affiliation(s)
- M Y Ali
- Hematopoietic Stem Cell Transplant Program, Division of Hematology/Oncology, The Feinberg School of Medicine, Northwestern University, The Robert H Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Ali MY, Oyama Y, Monreal J, Winter J, Tallman M, Gordon LI, Williams S, Singhal S, Mehta J. Reassessing the definition of myeloid engraftment after autotransplantation: it is not necessary to see 0.5 x 10(9)/l neutrophils on 3 consecutive days to define myeloid recovery. Bone Marrow Transplant 2002; 30:749-52. [PMID: 12439697 DOI: 10.1038/sj.bmt.1703741] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2002] [Accepted: 08/15/2002] [Indexed: 11/09/2022]
Abstract
The time to myeloid recovery after autologous hematopoietic stem cell transplantation (HSCT) is usually defined as the first of 3 consecutive days with an absolute neutrophil count (ANC) of >or=0.5 x 10(9)/l (ANC500). Universal documentation of ANC500 for 3 consecutive days, historically required to ensure robust myeloid recovery, has become difficult with a trend towards early discharge and outpatient HSCT. We studied 90 autografted patients to see how frequently ANC declined after having reached >or=0.5 x 10(9)/l. ANC500 was documented on 2 and 3 consecutive days in 14 and 63 patients, respectively. ANC increased by a median of 213% from the 1st to the 2nd day (rise in 75 and unchanged in two), and by a median of 142% from the 2nd day to the 3rd (rise in 60, unchanged in one, and decline in two; higher than the 1st day in the latter three). The increase from the 1st to the 3rd day was 13-3433% (median, 557%). Thus, in all 63 patients, no decline below ANC500 was seen, and the first day with ANC500 was also the first of 3 consecutive days with ANC500. The remaining 13 patients had repeat counts 2-7 days after the 1st day with ANC500 documenting further increase in ANC with no evidence of failed engraftment. These data show that the first day with ANC500 is also consistently the first of 3 consecutive days with ANC500 in autografted patients. Therefore, the traditional definition of myeloid engraftment should be changed to consider the first day with ANC500 as the day of engraftment without necessarily documenting ANC500 on the subsequent 1-2 days. This simple change in definition has significant implications for how data are reported to transplant registries and how peer-review organizations such as the Foundation for the Accreditation of Hematopoietic Cell Therapy (FAHCT) define completeness of data.
Collapse
Affiliation(s)
- M Y Ali
- Hematopoietic Stem Cell Transplant Program, Northwestern University Medical School, The Robert H Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL 60611, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Mehta J, Singhal S, Gordon L, Tallman M, Williams S, Luyun R, Ali MY, Oyama Y, Villa M, Shook T, Winter J. Cobe Spectra is superior to Fenwal CS 3000 Plus for collection of hematopoietic stem cells. Bone Marrow Transplant 2002; 29:563-7. [PMID: 11979304 DOI: 10.1038/sj.bmt.1703520] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2001] [Accepted: 02/04/2002] [Indexed: 11/09/2022]
Abstract
One hundred and seventy-seven stem cell apheresis procedures performed on 91 patients using the Fenwal CS 3000 Plus cell separator and 61 procedures performed on 37 patients using the Cobe Spectra cell separator were studied to compare the CD34(+) cell collection efficiencies (CE; the proportion of the total CD34(+) cell content in the blood volumes processed that is harvested) of the two machines. The absolute peripheral blood CD34(+) cell count was comparable for the two groups (P = 0.27). A strong correlation was seen between the blood CD34(+) cell count and the total number of CD34(+) cells collected for the Spectra (r(2) = 0.59; P < 10(-6)) and for the CS 3000 Plus (r(2) = 0.60; P < 10(-6)). No significant correlation emerged between the peripheral blood CD34(+) cell count and the CE of either machine. The total number of CD34(+) cells collected per procedure was comparable (P = 0.51): median 113 x 10(6) for CS 3000 Plus and median 218 x 10(6)for Spectra. CE was significantly higher with the Spectra (median 45.7%, range 9.8-98.6%) than the CS 3000 Plus (median 30.3%, range 1.7-89.3%; P < 0.00001). We conclude that the CD34(+) cell CE of the Spectra is superior to that of the CS 3000 Plus. Therefore, under the usual clinical conditions, Cobe Spectra should be used preferentially for peripheral blood progentor cell collection to maximize the number of hematopoietic stem cells collected.
Collapse
Affiliation(s)
- J Mehta
- The Hematopoietic Stem Cell Transplant Program, Division of Hematology/Oncology, Department of Internal Medicine, Northwestern University Medical School, Chicago, IL 60611, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Ali MY, Cole RB. SFE-plus-C(18) lipid cleanup and selective extraction method for GC/MS quantitation of polycyclic aromatic hydrocarbons in smoked meat. J Agric Food Chem 2001; 49:4192-4198. [PMID: 11559109 DOI: 10.1021/jf0100402] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In biological matrixes lipid material often poses an interference problem for determinations of nonpolar compounds, e.g., polycyclic aromatic hydrocarbons (PAHs). A newly developed supercritical fluid extraction plus adsorbent method, "SFE-plus-C(18)", offers selective extraction of PAHs in lipid-rich biological matrixes without the need for supplementary cleanup. This method eliminates the use of large volumes of toxic solvent and lengthy lipid removal procedures. This study reports the first application of the SFE-plus-C(18) method to the analysis of a genuine food product, i.e., smoked meat (beef). The procedure employs the addition of C(18) adsorbent beads to the initial sample slurry of pureed smoked meat prior to supercritical CO(2) extraction and GC/MS quantitation. During SF extraction, indigenous lipids are preferentially retained on the beads, and PAHs are selectively extracted with supercritical CO(2). In a comparison of determinations of PAHs by SFE-plus-C(18) vs the conventional SFE method, only 11-17% of the indigenous lipids observed by the conventional SFE method were co-extracted using the SFE-plus-C(18) method. The PAHs in smoked meat could thus be determined efficiently in the presence of a reduced background of co-extracted lipids. Out of 10 targeted PAHs, seven were detected with a range of 10.0-26.0 ng/g in the smoked meat sample. The other three PAHs were not present above the detection limit of the instrument (2.5-4.1 pg). The recoveries of PAHs obtained using the conventional SFE method were 63-94% lower than those achieved by SFE-plus-C(18).
Collapse
Affiliation(s)
- M Y Ali
- Department of Chemistry, University of New Orleans, 2000 Lakeshore Drive, New Orleans, Louisiana 70148, USA
| | | |
Collapse
|
18
|
Khan AH, El-Buni AA, Ali MY. Fertility of the cysts of Echinococcus granulosus in domestic herbivores from Benghazi, Libya, and the reactivity of antigens produced from them. Ann Trop Med Parasitol 2001; 95:337-42. [PMID: 11454243 DOI: 10.1080/00034980120053258] [Citation(s) in RCA: 11] [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] [Indexed: 12/28/2022]
Abstract
Unilocular cysts produced by Echinococcus granulosus were recovered from 110 domestic herbivores (60 sheep, 25 cattle, 20 goats and five camels) slaughtered in Benghazi. The proportion of the cysts from the sheep found to be fertile (75%) was higher than that of the cysts from the goats (55%), camels (40%), or cattle (0%). When tested in indirect haemagglutination assays (IHA) with eight sera from human cases of cystic echinococcosis, the fluid from the cattle cysts never gave a positive reaction. Antigens in the fluids collected from sheep or goat cysts did react with the sera, with antigens from each of the two sources giving similar titres with each serum. However, crude somatic antigens (prepared from protoscolices and brood capsules collected from sheep cysts) appeared to be more sensitive for the immunodiagnosis of human cystic echinococcosis than the cyst-fluid antigens.
Collapse
Affiliation(s)
- A H Khan
- Department of Microbiology and Parasitology, Faculty of Medicine, University of Garyounis, Benghazi, Libya
| | | | | |
Collapse
|
19
|
Khan ML, Ali MY, Siddiqui ZK, Shakir MA, Ohnishi H, Nishikawa K, Siddiqui SS. C. elegans KLP-11/OSM-3/KAP-1: orthologs of the sea urchin kinesin-II, and mouse KIF3A/KIFB/KAP3 kinesin complexes. DNA Res 2000; 7:121-5. [PMID: 10819327 DOI: 10.1093/dnares/7.2.121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Kinesins are intracellular multimeric transport motor proteins that move cellular cargo on microtubule tracks. It has been shown that the sea urchin KRP85/95 holoenzyme associates with a KAP115 non-motor protein, forming a heterotrimeric complex in vitro, called the Kinesin-II. Here we describe isolation of a cDNA clone corresponding to the klp-11 kinesin in C. elegans. Our sequence analysis of the encoded KLP-11 shows that it shares high homology with the OSM-3 kinesin. We also describe a nematode cDNA encoding KAP-1 that shares extensive homology with the sea urchin KAP115 kinesin associated protein. Sequence-based structural analysis of the OSM-3, KLP-11, and KAP-1, presented here suggests that these may form a heterotrimeric complex. We also describe the presence of a Drosophila armadillo consensus motif in CeKAP-1, first found in spKAP115, that suggests a possible role for the KAP-1 in signal transduction.
Collapse
Affiliation(s)
- M L Khan
- Department of Ecological Engineering, Toyohashi University of Technology, Japan
| | | | | | | | | | | | | |
Collapse
|
20
|
Abstract
C-terminal kinesin motor proteins, such as the Drosophila NCD and yeast KAR3, are involved in chromosomal segregation. Previously we have described two orthologs of NCD in Caenorhabditis elegans, KLP-3 and KLP-17, which also participate in chromosome movement. Here we report cDNA cloning of klp-15 and klp-16, and the expression pattern of the genes encoding C-terminal motor kinesins including klp-15 and klp-16. Interestingly KLP-15 and KLP-16 form a unique class of C-terminal kinesins, distinct from the previously known C-terminal motors in other organisms. Using in situ hybridization and RNA interference assay, we show that although all of these motors mediate chromosome segregation, they do so in a combination of unique and overlapping manners, suggesting a complex hierarchy of kinesin motor function in metazoans.
Collapse
Affiliation(s)
- M Y Ali
- Laboratory of Molecular Biology, Department of Ecological Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Japan
| | | | | | | |
Collapse
|
21
|
Vreysen MJ, Saleh KM, Ali MY, Abdulla AM, Zhu ZR, Juma KG, Dyck VA, Msangi AR, Mkonyi PA, Feldmann HU. Glossina austeni (Diptera: Glossinidae) eradicated on the island of Unguja, Zanzibar, using the sterile insect technique. J Econ Entomol 2000; 93:123-35. [PMID: 14658522 DOI: 10.1603/0022-0493-93.1.123] [Citation(s) in RCA: 262] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
An area-wide integrated tsetse eradication project was initiated in Zanzibar in 1994 by the International Atomic Energy Agency and the governments of Tanzania and Zanzibar, to eradicate Glossina austeni Newstead from Unguja Island (Zanzibar) using the sterile insect technique. Suppression of the tsetse population on Unguja was initiated in 1988 by applying residual pyrethroids as a pour-on formulation to livestock and by the deployment of insecticide impregnated screens in some of the forested areas. This was followed by sequential releases of gamma-sterilized male flies by light aircraft. The flies, packaged in carton release containers, were dispersed twice a week along specific flight lines separated by a distance of 1-2 km. More than 8.5 million sterile male flies were released by air from August 1994 to December 1997. A sterile to indigenous male ratio of >50:1 was obtained in mid-1995 and it increased to >100:1 by the end of 1995. As a consequence the proportion of sampled young females (1-2 ovulations), with an egg in utero in embryonic arrest or an uterus empty as a result of expulsion of a dead embryo, increased from <25% in the 1st quarter to >70% in the last quarter of 1995. In addition, the age structure of the female population became significantly distorted in favor of old flies (> or = 4 ovulations) by the end of 1995. The apparent density of the indigenous fly population declined rapidly in the last quarter of 1995, followed by a population crash in the beginning of 1996. The last trapped indigenous male and female flies were found in weeks 32 and 36, 1996, respectively. Time for 6 fly generations elapsed between the last catch of an indigenous fly and the end of the sterile male releases in December 1997.
Collapse
Affiliation(s)
- M J Vreysen
- Commission of Agriculture, Livestock and Natural Resources, P.O. Box 2593, Zanzibar, United Republic of Tanzania
| | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Ali MY, Siddiqui SS. cDNA cloning and expression of a C-terminus motor kinesin-like protein KLP-17, involved in chromosomal movement in Caenorhabditis elegans. Biochem Biophys Res Commun 2000; 267:643-50. [PMID: 10631116 DOI: 10.1006/bbrc.1999.1866] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Members of the kinesin protein family transport intracellular cargo to their correct cellular destination. Previously we have characterized the klp-3 gene from Caenorhabditis elegans, which encodes an ortholog of the retrograde C-terminus kinesin motors, such as Drosophila NCD, and yeast KAR3, involved in the chromosomal movement. Here we report the cloning of a full-length klp-17 cDNA in C. elegans, encoding a C-terminus kinesin of 605 amino residues. KLP-17 sequence defines a novel phylogenetic group, distinct from the NCD/KAR3 family. Interestingly, the klp-17 gene transcript is restricted to the nuclear compartment, as deduced by the RNA in situ hybridization in embryos. The klp-17::gfp-expressing transgenic animals do not display any GFP fluorescence signal, but expression of the extra chromosomal arrays cause production of abnormal males, and embryos with morphological defects and lethality in the progeny. Similarly, the klp-17 RNA interference assay results in embryonic death, arrested embryos, and polyploid cells. Thus, KLP-17 represents a new motor protein that mediates chromosome movement, essential for cell divisions during metazoan development.
Collapse
Affiliation(s)
- M Y Ali
- Laboratory of Molecular Biology, Department of Ecological Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, 441-8580, Japan
| | | |
Collapse
|
23
|
Abstract
BACKGROUND Of the 13 reported cases of hypercalcemia associated with fungal infection, 1 was caused by Cryptococcus neoformans and probably mediated by increased levels of 1,25-dihydroxyvitamin D [1,25(OH)2D]. Eight others were associated with Coccidioides immitis, of which only 2 had measured 1,25(OH)2D levels; in both, they were diminished. We report a patient with human immunodeficiency virus infection and simultaneous C. immitis and C. neoformans pneumonia and C. immitis fungemia associated with hypercalcemia. METHODS Consecutive measurements of serum total and ionized calcium, phosphorous, blood urea nitrogen, creatinine, 25(OH)D, 1,25(OH)2D, parathyroid hormone (PTH), parathyroid hormone-related protein (PTHrp) and albumin were performed over a period of 46 months. RESULTS While the patient was hypercalcemic, intact serum PTH and PTHrp were undetectable, serum 25(OH)D levels were normal, and serum 1,25(OH)2D levels were in the high normal range. Successful treatment of the C. immitis and C. neoformans infections resulted in resolution of the hypercalcemia and increase of PTH and PTHrp to the normal range. CONCLUSION In some patients with HIV infection, coincident hypercalcemia, and severe fungal infection, the responsible factor may be 1,25(OH)2D. Although total serum levels of this compound may not be frankly elevated, they are inappropriately high for the circumstances. Free 1,25(OH)2D levels should be determined in this situation.
Collapse
Affiliation(s)
- M Y Ali
- Division of Infectious Disease and Endocrinology, Fairview General Hospital, Cleveland Clinic Health System, Ohio, USA
| | | | | | | |
Collapse
|
24
|
Ali MY, Cole RB. SFE plus C18 lipid cleanup method for selective extraction and GC/MS quantitation of polycyclic aromatic hydrocarbons in biological tissues. Anal Chem 1998; 70:3242-8. [PMID: 11013725 DOI: 10.1021/ac980201+] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lipid material represents a potential interference for determination of nonpolar compounds (e.g., polycyclic aromatic hydrocarbons) in biological tissue samples. This study reports the development of a selective extraction method using supercritical CO2 that allows the GC/MS quantitation of PAHs in the presence of a substantial lipid background. Selective extraction of PAHs relies upon addition of C18 adsorbent beads to the initial sample slurry. The dried mixture, including C18 adsorbent, is placed in the supercritical fluid extraction (SFE) chamber. During the SFE process, lipids are preferentially retained on the C18 beads. This "SFE plus C18" procedure was developed by first optimizing SFE conditions (100 degrees C, 350 bar) for recovery of PAH standards. PAHs containing added model lipid compounds (stearic acid and cholesterol) were then subjected to SFE plus C18 treatment followed by GC/MS analysis. Using this approach, a recovery of 94-100% of PAHs was obtained while only 9-17% of the lipid material present was coextracted from the same test sample. The developed method is demonstrated to permit efficient recovery and detection of PAHs spiked into crab tissue, a matrix with a high lipid content.
Collapse
Affiliation(s)
- M Y Ali
- Department of Chemistry, University of New Orleans, Lakefront, Louisiana 70148, USA
| | | |
Collapse
|
25
|
Khan ML, Gogonea CB, Siddiqui ZK, Ali MY, Kikuno R, Nishikawa K, Siddiqui SS. Molecular cloning and expression of the Caenorhabditis elegans klp-3, an ortholog of C terminus motor kinesins Kar3 and ncd. J Mol Biol 1997; 270:627-39. [PMID: 9245592 DOI: 10.1006/jmbi.1997.1112] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Common to all eukaryotes, kinesins are cytoskeletal motor proteins that mediate intracellular transport on microtubule tracks, using ATP hydrolysis. A Caenorhabditis elegans cDNA clone corresponding to the klp-3 gene, encoding a novel kinesin, was isolated, and mapped on LGII. Northern blot analysis using the klp-3 cDNA probe reveals a 1.9 kb mRNA that is transcribed at a low level during development. Temporal and spatial expression of the klp-3::lacZ fusion gene is limited to the marginal cells in the pharynx, and a group of muscle cells in the posterior gut region. The nucleotide sequence of klp-3 has been deduced from the cDNA and nematode genome sequencing consortium data. Conceptual translation of the klp-3 gene reveals a kinesin-like protein with its conserved motor domain containing the ATP binding and microtubule binding sites located in the C terminus. KLP-3 shares extensive homology with the yeast Kar3 and Drosophila ncd kinesins, which have previously been shown to mediate chromosomal movement and segregation during meiosis and mitosis. Overexpression of the klp-3 gene partially rescues the lethal phenotype of the maternal lethal him-14 ts(it44) mutants at non-permissive temperatures, and reduces the incidence of males caused by non-disjunction of the X-chromosome. Similarly, expression of a klp-3 antisense RNA, under the control of a heat shock promoter, causes embryonic arrest, dead eggs and polyploid cells in transgenic lines, suggesting a critical role for the klp-3 function in chromosome segregation. Further analysis of the klp-3 gene in C. elegans may elucidate diverse functions of the C terminus mitotic motor proteins during development.
Collapse
Affiliation(s)
- M L Khan
- Laboratory of Molecular Biology, Department of Ecological Engineering, Toyohashi University of Technology, Toyohashi, 441, Japan
| | | | | | | | | | | | | |
Collapse
|
26
|
Abstract
This paper is concerned with the prediction of birth weight using simple anthropometric indices, namely mid-arm and chest circumferences. Such indices are important tools in the identification of low birth weight infants in areas where scales are not widely available or where they are likely to be not robust enough to withstand rough treatment. This paper reports data from a study in Assiut, Egypt. The aim was to identify which of the two indices was the better predictor or whether measurements on both arm and chest circumference were required. The results show that chest circumference is the better predictor of birth weight, partly perhaps because its measurement is more replicable. Cut-off points for the identification of low birth weight infants are then identified.
Collapse
Affiliation(s)
- I D Diamond
- Department of Social Statistics, University of Southampton, UK
| | | | | | | | | | | |
Collapse
|
27
|
Abstract
The Problem-Oriented Medical Information System (PROMIS) is a computer-based data system which was developed in the United States to provide an improved approach to clinical teaching and patient care. The introduction of this system into Australian medical schools and hospitals is proposed. PROMIS, which is now widely accepted in the United States, has shown its value in overcoming some of the deficiencies inherent in other medical records systems. The merits of the system, and the salient features of its operation, are discussed. Some potential constraints and difficulties in its implementation, none of which appears insurmountable, are outlined briefly.
Collapse
|
28
|
Shaaban MM, Hammad WA, Fathalla MF, Ghaneimah SA, El-Sharkawy MM, Salim TH, Ali MY, Liao WC, Smith SC. Effects of oral contraception on liver function tests and serum proteins in women with past viral hepatitis. Contraception 1982; 26:65-74. [PMID: 7128136 DOI: 10.1016/0010-7824(82)90173-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Forty-three women who had viral hepatitis one or more years ago and 35 healthy women who were age and parity matched were given an oral contraceptive containing 0.05mg ethinyl estradiol and 0.5mg levonorgestrel for six consecutive months. Liver function tests (serum bilirubin, SGOT, SGPT and serum alkaline phosphatase) and serum proteins (total, albumin, globulins, ceruloplasmin, haptoglobin and alpha-1 antitrypsin) were measured before beginning treatment and after three and six months of use. Past hepatitis women experienced increased unconjugated bilirubin, SGOT, SGPT and alkaline phosphatase levels throughout the six months while the control women showed less pronounced changes during the first three months with tendency to reversion to normal during the subsequent three months; the group X time of test interactions were significantly different between the two groups. Serum haptoglobin decreased significantly in both groups but the past-hepatitis group showed a more persistent change with time. Changes also occurred in serum albumin, alpha-1 and beta globulins, ceruloplasmin but without group effect or group X time interactions.
Collapse
|
29
|
Gupta KC, Ali MY. Failure of oral contraceptive with rifampicin. Med J Zambia 1980; 15:23. [PMID: 7269801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
30
|
|
31
|
Abstract
Eggs from 25 parental pairs were reared at sustained temperatures from 20C to 34C, or were changed from 20C to 30C or vice versa al various developmental stages. Crowding, mechanical shoes, container type, amount of aeration, and malachite green prophylaxis did not alter numbers of vertebrae, and pectoral or dorsal rays; nor did these numbers vary between eggs laid on different days by the same parents. Numbers of anal and caudal rays were significantly different between sibling egg batches, and were decreased by crowded rearing conditions. Mechanical shock increased anal ray counts. Caudal rays were sometimes decreased by lack of aeration. Response of vertebrae to different sustained temperatures was U-shaped in nine groups, with nadirs varying from 24C to 32C; in two groups, vertebrae were progressively fewer at higher temperatures. Pectoral ray counts usually were progressively lower at higher temperatures. Dorsal ray counts of most formed arched curves. In all series, heritable variation at one temperature roughly equalled phenotypic variability between temperatures. Inherited differences in response patterns of different meristic series are largely independent of each other, and of mortality and of hatching time. Temperature breaks produced an overcompensation in vertebrae if applied early, or a paradoxical reaction if applied late.
Collapse
|
32
|
Abstract
DOI: 10.3329/fmcj.v5i2.6816Faridpur Med. Coll. J. 2010;5(2):37
Collapse
|
33
|
Hussain MJ, Ali MY, Rahman MA, Quayyum MA, Choudury DA. Effect of urea super granule on the performance of cabbage in Young Jamuna and Brahmaputra Floodplain Soils of Tangail. ACTA ACUST UNITED AC 1970. [DOI: 10.3329/bjar.v35i2.5889] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A number of experiments were conducted at the Farming Systems Research and Development (FSRD) site, Palima, Tangail for three consecutive years to evaluate the efficiency of USG application in comparison with prilled urea on the yield and yield attributes of cabbage (cv. Atlas-70). There were five treatments, T1= N195 (recommended N dose for HYG, used as prilled urea), T2= N195 (recommended N dose for HYG, used as USG), T3=N175 (N 10% reduction of recommended N dose as USG), T4= N155 (N 20% reduction of recommended N dose as USG), and T5= N105 (Farmers' N dose used as prilled urea). Treatments Tl-T4 received recommended dose of other nutrients (P56K162S13Mo0.6CD3t) and T5 received P25K90S0Mo0CD51 Yield and yield-contributing characters of cabbage significantly responded to the application of USG. The highest head yield (78.1 t/ha) was obtained with the recommended dose of N as USG, and 10% (77.1 t/ha), and 20% (72.0 t/ha) less than the recommended dose of N as USG also produced higher yield than recommended prilled urea-N. Application of USG was found more efficient than prilled urea and the treatment N195P56K162S13Mo0.6CD3t (recommended N as USG for HYG) was found profitable for cabbage cultivation in terms of yield and the treatment N175P56K162S13Mo0.6CD3t (10% N reduction of recommended N dose as USG) was found profitable in terms of economic returns. Keywords: USG; prilled urea; cabbage. DOI: 10.3329/bjar.v35i2.5889Bangladesh J. Agril. Res. 35(2) : 267-272, June 2010
Collapse
|
34
|
Ali MY, Alam MSS, Mannan MA, Asaduzzaman AKM, Khan MA, Islam SMJ. Short Course Palliative Radiotherapy in Locally Advanced Squamous Cell Carcinoma of Head and Neck. ACTA ACUST UNITED AC 1970. [DOI: 10.3329/jafmc.v6i1.5986] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This prospective cohort study was conducted at the Combined Military Hospital, Dhaka during January 2003to December 2005. Thirty patients with locally advanced stage III and stage IV squamous cell carcinoma ofhead and neck were treated with a short course palliative radiotherapy (30 Gray in 10 fractions over 2 weeks).All (100%) patients with pain and 90% of patients with dysphagia, dyspnoea and disturbed sleep had greaterthan 50% relief in symptoms after radiotherapy. Dysphonia and cough were satisfactorily relieved in morethan 60% of cases. Eight of 30 lesions in this study had complete response; 14 lesions had a partial response; 4lesions had no response; 2 lesions progressed under treatment. Response could not be assessed in two patients.Acute and late reactions were acceptable. After palliative radiotherapy 8(27%) patients were eligible for doseescalation and received further radiotherapy upto radical dose equivalent. It was concluded that short coursepalliative radiotherapy regimen evaluated is an effective treatment modality for sustained symptoms reliefwith good response rates and acceptable toxicity in locally advanced head-neck cancer.Key words: Palliation; radiotherapy; short course; head and neck cancer.DOI: 10.3329/jafmc.v6i1.5986Journal of Armed Forces Medical College, Bangladesh Vol.6(1) 2010 p.16-20
Collapse
|
35
|
Rahman MS, Ali MY, Ali MU. In Vitro Screening of two Flavonoid Compounds Isolated from Cassia alata L. Leaves for Fungicidal Activities. ACTA ACUST UNITED AC 1970. [DOI: 10.3329/jbs.v16i0.3759] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Key words: Cassia alata, flavonoids, fungicidal activities. DOI:10.3329/jbs.v16i0.3759 J. bio-sci. 16: 139-142, 2008
Collapse
|
36
|
Ali MY. Investigation on fish diseases and parasites in East Pakistan. Bull Off Int Epizoot 1968; 69:1517-21. [PMID: 5761131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
37
|
Ali MY, Shanmugaratnam K. Cytodiagnosis of nasopharyngeal carcinoma. Acta Cytol 1967; 11:54-60. [PMID: 5230441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
38
|
Ali MY. Histology of the human nasopharyngeal mucosa. J Anat 1965; 99:657-72. [PMID: 5857093 PMCID: PMC1270703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
|
39
|
|