1
|
Amin AM, Ali K, Elbenawi H, Saber A, Abuelazm M, Abdelazeem B. Efficacy and safety of restrictive versus liberal blood transfusion strategies in acute myocardial infarction and anemia: a systematic review and meta-analysis of randomized controlled trials. Coron Artery Dis 2024; 35:239-251. [PMID: 38411260 DOI: 10.1097/mca.0000000000001349] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
BACKGROUND Blood transfusion strategies in patients with acute myocardial infarction (AMI) and anemia are yet to be conclusively identified. Thus, we aim to assess the efficacy and safety of restrictive versus liberal blood transfusion strategies for AMI and anemia. METHODS A systematic review and meta-analysis of randomized controlled trials (RCTs) retrieved from PubMed, web of science, SCOPUS, EMBASE, and Cochrane Central Register of Controlled Trials were performed through November 2023. We used RevMan V. 5.4 to pool dichotomous data using risk ratio (RR) and continuous data using mean difference (MD) with a 95% confidence interval (CI). (PROSPERO): ID: CRD42023490692. RESULTS We included four RCTs with 4.325 patients. There was no significant difference between both groups regarding MACE whether at 30 days (RR: 0.93 with 95% CI [0.57-1.51], P = 0.76) or ≥ six months (RR: 1.17 with 95% CI [0.95-1.45], P = 0.14), all-cause mortality at 30 days (RR: 1.16 with 95% CI [0.95-1.40], P = 0.14) or ≥ six months (RR: 1.16 with 95% CI [0.88-1.53], P = 0.28). However, the liberal strategy was significantly associated with increased hemoglobin level change (MD: -1.44 with 95% CI [-1.68 to -1.20], P < 0.00001). However, the restrictive strategy was significantly associated with a lower incidence of acute lung injury (RR: 0.11 with 95% CI [0.02-0.60], P = 0.01). CONCLUSION There was no significant difference between the restrictive blood transfusion strategy and the liberal blood transfusion strategy regarding the clinical outcomes. However, restrictive blood transfusion strategy was significantly associated with a lower incidence of acute lung injury than liberal blood transfusion strategy.
Collapse
Affiliation(s)
| | - Karim Ali
- Internal Medicine, Hennepin Healthcare, Minneapolis, Minnesota, USA
| | | | | | | | - Basel Abdelazeem
- Department of Cardiology, West Virginia University, Morgantown, West Virginia, USA
| |
Collapse
|
2
|
Amin AM, Ghaly R, Ibrahim AA, Ali MA, Almaadawy O, Elzahaby A, Abuelazm M, Abdelazeem B, Munir MB. Efficacy and safety of high-power short-duration ablation for atrial fibrillation: a systematic review and meta-analysis of randomized controlled trials. J Interv Card Electrophysiol 2024:10.1007/s10840-024-01782-2. [PMID: 38460090 DOI: 10.1007/s10840-024-01782-2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 03/01/2024] [Indexed: 03/11/2024]
Abstract
BACKGROUND High-power short-duration (HPSD) ablation has emerged as an alternative to conventional standard-power long-duration (SPLD) ablation. We aim to assess the efficacy and safety of HPSD versus SPLD for atrial fibrillation (AF) ablation. METHODS A systematic review and meta-analysis of randomized controlled trials (RCTs) retrieved from PubMed, WOS, SCOPUS, EMBASE, and CENTRAL were performed through August 2023. We used RevMan V. 5.4 to pool dichotomous data using risk ratio (RR) and continuous data using mean difference (MD) with a 95% confidence interval (CI). PROSPERO ID CRD42023471797. RESULTS We included six RCTs with a total of 694 patients. HPSD was significantly associated with a decreased total procedure time (MD: -22.88 with 95% CI [-36.13, -9.63], P = 0.0007), pulmonary vein isolation (PVI) time (MD: -19.73 with 95% CI [-23.93, -15.53], P < 0.00001), radiofrequency time (MD: -10.53 with 95% CI [-12.87, -8.19], P < 0.00001). However, there was no significant difference between HPSD and SPLD ablation with respect to the fluoroscopy time (MD: -0.69 with 95% CI [-2.00, 0.62], P = 0.30), the incidence of esophageal lesions (RR: 1.15 with 95% CI [0.43, 3.07], P = 0.77), and the incidence of first pass isolation (RR: 0.98 with 95% CI [0.88, 1.08], P = 0.65). CONCLUSION HPSD ablation was significantly associated with decreased total procedure time, PVI time, and radiofrequency time compared with SPLD ablation. On the contrary, SPLD ablation was significantly associated with low maximum temperature.
Collapse
Affiliation(s)
| | - Ramy Ghaly
- Internal Medicine, University of Missouri-Kansas City, Kansas City, MO, USA
| | | | | | | | - Amr Elzahaby
- Faculty of Medicine, Tanta University, Tanta, Egypt
| | | | - Basel Abdelazeem
- Department of Cardiology, West Virginia University, Morgantown, WV, USA
| | - Muhammad Bilal Munir
- Section of Electrophysiology, Division of Cardiology, Department of Medicine, University of California Davis, Sacramento, CA, USA
| |
Collapse
|
3
|
Abuelazm M, Khildj Y, Ibrahim AA, Mahmoud A, Amin AM, Gowaily I, Khan U, Abdelazeem B, Brašić JR. Intensive Blood Pressure Control After Endovascular Thrombectomy for Acute Ischemic Stroke: a Systematic Review and Meta-Analysis. Clin Neuroradiol 2024:10.1007/s00062-024-01391-6. [PMID: 38453701 DOI: 10.1007/s00062-024-01391-6] [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: 11/25/2023] [Accepted: 01/22/2024] [Indexed: 03/09/2024]
Abstract
BACKGROUND AND PURPOSE Optimal clinical outcome with successful recanalization from endovascular thrombectomy (EVT) requires optimal blood pressure (BP) management. We aimed to evaluate the efficacy and safety of the intensive BP target (< 140 mm Hg) versus the standard BP target (< 180 mm Hg) after EVT for acute ischemic stroke. METHODS We conducted a systematic review and meta-analysis synthesizing evidence from randomized controlled trials (RCTs) obtained from PubMed, Embase Cochrane, Scopus, and WOS until September 7th, 2023. We used the fixed-effect model to report dichotomous outcomes using risk ratio (RR) and continuous outcomes using mean difference (MD), with a 95% confidence interval (CI). PROSPERO ID CRD42023463206. RESULTS We included four RCTs with 1559 patients. There was no difference between intensive BP and standard BP targets regarding the National Institutes of Health Stroke Scale (NIHSS) change after 24 h [MD: 0.44 with 95% CI (0.0, 0.87), P = 0.05]. However, the intensive BP target was significantly associated with a decreased risk of excellent neurological recovery (mRS ≤ 1) [RR: 0.87 with 95% CI (0.76, 0.99), P = 0.03], functional independence (mRS ≤ 2) [RR: 0.81 with 95% CI (0.73, 0.90), P = 0.0001] and independent ambulation (mRS ≤ 3) [RR: 0.85 with 95% CI (0.79, 0.92), P < 0.0001]. CONCLUSIONS An intensive BP target after EVT is associated with worse neurological recovery and significantly decreased rates of functional independence and independent ambulation compared to the standard BP target. Therefore, the intensive BP target should be avoided after EVT for acute ischemic stroke.
Collapse
Affiliation(s)
| | - Yehya Khildj
- Faculty of Medicine, University of Algiers, Algiers, Algeria
| | | | | | | | | | - Ubaid Khan
- Faculty of Medicine, King Edward Medical University, Lahore, Pakistan
| | - Basel Abdelazeem
- Department of Cardiology, West Virginia University, West Virginia, USA
| | - James Robert Brašić
- Section of High-Resolution Brain Positron Emission Tomography Imaging, Division of Nuclear Medicine and Molecular Imaging, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Behavioral Health, New York City Health and Hospitals/Bellevue, New York, NY, USA
- Department of Psychiatry, New York University Grossman School of Medicine, New York University Langone Health, New York, NY, USA
| |
Collapse
|
4
|
Amin AM, Khlidj Y, Abuelazm M, Ibrahim AA, Tanashat M, Imran M, Nazir A, Shaikhkhalil H, Abdelazeem B. The efficacy and safety of exercise regimens to mitigate chemotherapy cardiotoxicity: a systematic review and meta-analysis of randomized controlled trials. Cardiooncology 2024; 10:10. [PMID: 38395955 PMCID: PMC10885653 DOI: 10.1186/s40959-024-00208-2] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 02/05/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND Cardiotoxicity is one of the most common adverse events of the chemotherapy. Physical exercise was shown to be cardioprotective. We aim to estimate the efficacy and safety of exercise in cancer patients receiving cardiotoxic chemotherapy. METHODS We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs), which were retrieved by systematically searching PubMed, Web of Science, SCOPUS, Cochrane, Clinical Trials.gov, and MedRxiv through July 17th, 2023. We used RevMan V. 5.4 to pool dichotomous data using risk ratio (RR) and continuous data using mean difference (MD), with a 95% confidence interval (CI). PROSPERO ID CRD42023460902. RESULTS We included thirteen RCTs with a total of 952 patients. Exercise significantly increased VO2 peak (MD: 1.95 with 95% CI [0.59, 3.32], P = 0.005). However, there was no significant effect regarding left ventricular ejection fraction, global longitudinal strain, cardiac output, stroke volume, left ventricular end-diastolic volume, left ventricular end-systolic volume, E/A ratio, resting heart rate, peak heart rate, resting systolic blood pressure, and resting diastolic blood pressure. Also, there was no significant difference regarding any adverse events (AEs) (RR: 4.44 with 95% CI [0.47, 41.56], P = 0.19), AEs leading to withdrawal (RR: 2.87 with 95% CI [0.79, 10.43], P = 0.11), serious AEs (RR: 3.00 with 95% CI [0.14, 65.90], P = 0.49), or all-cause mortality (RR: 0.25 with 95% CI [0.03, 2.22], P = 0.21). CONCLUSION Exercise is associated with increased VO2 peak in cancer patients receiving cardiotoxic chemotherapy. However, there was no significant difference between exercise and usual care regarding the echocardiographic and safety outcomes.
Collapse
Affiliation(s)
| | - Yehya Khlidj
- Faculty of Medicine, Algiers University, Algiers, Algeria
| | | | | | | | - Muhammad Imran
- University College of Medicine and Dentistry, The University of Lahore, Lahore, Pakistan
| | - Abubakar Nazir
- Faculty of Medicine, King Edward Medical University, Lahore, Pakistan
| | | | - Basel Abdelazeem
- Department of Cardiology, West Virginia University, Morgantown, WV, USA
| |
Collapse
|
5
|
Abuelazm M, Badr A, Turkmani M, Amin MA, Amin AM, Aboutaleb A, Gowaily I, Soliman Y, Abdelazeem B. The efficacy and safety of new potassium binders on renin-angiotensin-aldosterone system inhibitor optimization in heart failure patients: a systematic review and meta-analysis. ESC Heart Fail 2024; 11:28-43. [PMID: 38012095 PMCID: PMC10804144 DOI: 10.1002/ehf2.14588] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/08/2023] [Accepted: 10/29/2023] [Indexed: 11/29/2023] Open
Abstract
Guideline-directed medical therapy (GDMT) has improved outcomes in patients with heart failure, including the use of renin-angiotensin-aldosterone system inhibitors, which can hinder the excretion of potassium, resulting in hyperkalaemia. New potassium binders (NPBs) can prevent this adverse effect; however, the efficacy and safety of NPB for this indication have not been fully established. We conducted a systematic review and meta-analysis synthesizing randomized controlled trials (RCTs), which were retrieved by systematically searching PubMed, Web of Science, Scopus, and Cochrane through 26 April 2023. The risk of bias assessment was conducted, following Cochrane's updated Risk of Bias 2 assessment tool. We used the fixed-effects model to pool dichotomous data using risk ratio (RR) and continuous data using mean difference (MD), with a 95% confidence interval (CI) (PROSPERO ID: CRD42023426113). We included six RCTs with a total of 1432 patients. NPB was significantly associated with successful mineralocorticoid receptor antagonist (MRA) optimization [RR: 1.13 with 95% CI (1.02-1.25), P = 0.02], decreased patients with MRA at less than the target dose [RR: 0.72 with 95% CI (0.57-0.90), P = 0.004], and decreased hyperkalaemic episodes [RR: 0.42 with 95% CI (0.24-0.72), P = 0.002]. However, there was no difference between NPB and placebo regarding angiotensin-converting enzyme inhibitor (ACEi)/angiotensin receptor blocker (ARB)/angiotensin receptor/neprilysin inhibitor (ANRi) optimization [RR: 1.02 with 95% CI (0.89-1.17), P = 0.76] and serum potassium change [MD: -0.31 with 95% CI (-0.61 to 0.00), P = 0.05], with an acceptable safety profile except for the increased incidence of hypokalaemia with NPB [RR: 1.57 with 95% CI (1.12-2.21), P = 0.009]. NPB has been shown to improve GDMT outcomes by enhancing MRA optimization and reducing hyperkalaemic episodes. However, there are limited data on the effects of NPB on ACEi/ARB/ANRi optimization. Future RCTs should investigate ACEi/ARB/ANRi optimization and conduct head-to-head comparisons of NPB (patiromer and sodium zirconium cyclosilicate).
Collapse
Affiliation(s)
| | - Amr Badr
- Department of CardiologyBanha Teaching HospitalBanhaEgypt
| | - Mustafa Turkmani
- Department of Internal MedicineMcLaren Health CareOaklandMIUSA
- Department of Internal MedicineMichigan State UniversityEast LansingMIUSA
| | | | | | | | | | | | - Basel Abdelazeem
- Department of Internal MedicineMichigan State UniversityEast LansingMIUSA
- Department of CardiologyWest Virginia UniversityMorgantownWVUSA
| |
Collapse
|
6
|
Abuelazm M, Ibrahim AA, Khlidj Y, Badr A, Amin AM, Elzeftawy MA, Gowaily I, Elsaeidy AS, Abdelazeem B. Once-weekly Insulin Icodec Versus Once-daily Long-acting Insulin for Type II Diabetes: A Meta-analysis of Randomized Controlled Trials. J Endocr Soc 2024; 8:bvad177. [PMID: 38213906 PMCID: PMC10783254 DOI: 10.1210/jendso/bvad177] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Indexed: 01/13/2024] Open
Abstract
Background Insulin icodec is a novel basal insulin analog with once-weekly subcutaneous administration. We aim to estimate the efficacy and safety of insulin icodec vs long-acting insulin (insulin glargine and degludec) in type II diabetic patients. Methods We conducted a systematic review and meta-analysis synthesizing randomized controlled trials (RCTs), which were retrieved by systematically searching PubMed, Web of Science, SCOPUS, and Cochrane through May 29, 2023. We used RevMan V. 5.4 to pool dichotomous data using risk ratio (RR) and continuous data using mean difference (MD) with a 95% confidence interval (CI). Our primary outcome was glycated hemoglobin (HbA1C) change. Results We included 7 RCTs with a total of 3183 patients. Insulin icodec was associated with significantly decreased HbA1C (MD: -0.15 with 95% CI [-0.24, -0.06], P = .002) and increased percentage of time with glucose in range (TIR) (MD: 4.06 with 95% CI [2.06, 6.06], P = .0001). However, insulin icodec was associated with increased body weight (MD: 0.57 with 95% CI [0.45, 0.70], P = .00001). Also, there was no difference regarding any serious adverse events (AEs) (RR: 0.96 with 95% CI [0.76, 1.20], P = .7) or AEs leading to withdrawal (RR: 1.54 with 95% CI [0.84, 2.82], P = .16). However, insulin icodec was associated with increased any AEs incidence (RR: 1.06 with 95% CI [1.01, 1.12], P = .02). Conclusion Insulin icodec was associated with decreased HbA1C, increased TIR, with similar hypoglycemic and serious AEs. However, it was also associated with increased body weight and the incidence of any AEs.
Collapse
Affiliation(s)
| | - Ahmed A Ibrahim
- Faculty of Medicine, Menoufia University, Menoufia 32511, Egypt
| | - Yehya Khlidj
- Faculty of Medicine, Algiers University, Algiers 44002, Algeria
| | - Amr Badr
- Department of Cardiology, Banha Teaching Hospital, Banha 13511, Egypt
| | | | | | | | | | - Basel Abdelazeem
- Department of Cardiology, West Virginia University, Morgantown, WV 26505, USA
- Department of Internal Medicine, Michigan State University, East Lansing, MI 48824, USA
| |
Collapse
|
7
|
Grasso CS, Cani AK, Hovelson DH, Quist MJ, Douville NJ, Yadati V, Amin AM, Nelson PS, Betz BL, Liu CJ, Knudsen KE, Cooney KA, Feng FY, McDaniel AS, Tomlins SA. Integrative molecular profiling of routine clinical prostate cancer specimens. Ann Oncol 2015; 26:1110-1118. [PMID: 25735316 PMCID: PMC4516047 DOI: 10.1093/annonc/mdv134] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 02/12/2015] [Accepted: 02/20/2015] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Comprehensive molecular profiling led to the recognition of multiple prostate cancer (PCa) molecular subtypes and driving alterations, but translating these findings to clinical practice is challenging. PATIENTS AND METHODS We developed a formalin-fixed paraffin-embedded (FFPE) tissue compatible integrative assay for PCa molecular subtyping and interrogation of relevant genetic/transcriptomic alterations (MiPC). We applied MiPC, which combines capture-based next generation sequencing and quantitative reverse transcription PCR (qRT-PCR), to 53 FFPE PCa specimens representing cases not well represented in frozen tissue cohorts, including 8 paired primary tumor and lymph node metastases. Results were validated using multiplexed PCR based NGS and Sanger sequencing. RESULTS We identified known and novel potential driving, somatic mutations and copy number alterations, including a novel BRAF T599_V600insHT mutation and CYP11B2 amplification in a patient treated with ketoconazole (a potent CYP11B2 inhibitor). qRT-PCR integration enabled comprehensive molecular subtyping and provided complementary information, such as androgen receptor (AR) target gene module assessment in advanced cases and SPINK1 over-expression. MiPC identified highly concordant profiles for all 8 tumor/lymph node metastasis pairs, consistent with limited heterogeneity amongst driving events. MiPC and exome sequencing were performed on separately isolated conventional acinar PCa and prostatic small cell carcinoma (SCC) components from the same FFPE resection specimen to enable direct comparison of histologically distinct components. While both components showed TMPRSS2:ERG fusions, the SCC component exclusively harbored complete TP53 inactivation (frameshift variant and copy loss) and two CREBBP mutations. CONCLUSIONS Our results demonstrate the feasibility of integrative profiling of routine PCa specimens, which may have utility for understanding disease biology and enabling personalized medicine applications.
Collapse
Affiliation(s)
- C S Grasso
- Michigan Center for Translational Pathology, Department of Pathology; Department of Pathology, Oregon Health & Sciences University, Portland
| | - A K Cani
- Michigan Center for Translational Pathology, Department of Pathology
| | - D H Hovelson
- Departments of Computational Medicine & Bioinformatics
| | - M J Quist
- Michigan Center for Translational Pathology, Department of Pathology; Department of Pathology, Oregon Health & Sciences University, Portland
| | | | - V Yadati
- Michigan Center for Translational Pathology, Department of Pathology
| | - A M Amin
- Michigan Center for Translational Pathology, Department of Pathology
| | - P S Nelson
- Division of Human Biology; Division of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle
| | - B L Betz
- Michigan Center for Translational Pathology, Department of Pathology
| | - C-J Liu
- Michigan Center for Translational Pathology, Department of Pathology
| | - K E Knudsen
- Department of Cancer Biology; Departments of Urology; Radiation Oncology, Thomas Jefferson University, Philadelphia, USA
| | - K A Cooney
- Internal Medicine; Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor
| | - F Y Feng
- Radiation Oncology; Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor
| | - A S McDaniel
- Michigan Center for Translational Pathology, Department of Pathology
| | - S A Tomlins
- Michigan Center for Translational Pathology, Department of Pathology; Urology; Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor.
| |
Collapse
|
8
|
Abstract
Acute Mesenteric Ischaemia (AMI) is an uncommon vascular emergency where the diagnosis is often difficult and overlooked and delay in diagnosis results in a grave outcome. Although extravascular events like intussusception, volvulus, strangulated hernia and adhesive obstruction in neglected cases can result intestinal gangrene, this contribution will be limited to acute mesenteric ischaemia as a primary event. AMI consists of four pathologic processes (arterial thrombosis, arterial embolism, Non Occlusive Mesenteric Ischaemia (NOMI) and mesenteric venous thrombosis (MVT)) with similar clinical presentation and one potentially fatal pathological endpoint- intestinal gangrene. The clinical setting and the patient's risk profile often give the clue to the etiological process while the presentation is dominated by severe unrelenting abdominal pain out of proportion to the physical findings. The key to the successful management depends on the surgeon's ability to suspect the diagnosis, pursue appropriate investigations and institute aggressive treatment. The mortality remains high due to difficulty and delay in the diagnosis.
Collapse
Affiliation(s)
- N J Menon
- Academic Department of Surgery, The Royal Free and University College Medical School, London, UK
| | | | | | | |
Collapse
|
9
|
Abstract
Two cases of diffuse malignant mesothelioma of the peritoneum are described in 65 and 54-year-old patients a long time following abdominal radiotherapy treatment for testicular tumour in addition to orchidectomy.
Collapse
Affiliation(s)
- A M Amin
- Department of General Surgery and Department of Pathology, Eastbourne District General Hospital, King's Drive, Eastbourne, UK
| | | | | |
Collapse
|
10
|
Amin AM, Ananthakrishnan N, Nambinarayanan TK. Composition of gallstones and sequential events in biliary lithogenesis--is it different in south India compared to north? J Assoc Physicians India 2000; 48:885-90. [PMID: 11198787] [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] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
AIMS This study was carried out to determine the gross type and composition of gallstones from South India in order to compare it with published results from the North to see whether the sequential events in biliary lithogenesis are different in these two geographical areas. MATHODOLOGY: A total of 76 stones collected from various hospitals in South India including JIPMER were analysed using X-ray crystallography. Patient characteristics were recorded. Gross typing was done according to Bockus' morphological criteria. RESULTS Patients with gallstones in South India were found to be older in age with near equal gender distribution. Pigment calcium stones accounted for 56.5%, pigment stones for 17.2% and mixed stones for 14.2% of gallstones. Bilirubin and its salts were the most frequently identified class of compounds by crystallography. Analysis of gallstones layer by layer revealed equal distribution of bilirubin compounds between the centre and outer layers except crystalline bilirubin which was found only in outer layers. Vaterite, a polymorph of calcium carbonate was found in the nucleus, whereas vaterite and aragonite were found in the outer layers. Combination of anhydrous cholesterol and cholesterol II were found in the nucleus. Epitaxial relationship were found to hold good except for vaterite and aragonite. CONCLUSION Gallstones from South India are probably due to infection rather than supersaturation as evidenced by predominance of pigment calcium stones and various types of bilirubin and calcium carbonate compounds. Vaterite is important for nucleation. Further growth of stones is influenced by epitaxial relationship. These findings are dissimilar to that reported from North India indicating a different stimulus for stone precipitation in these two areas.
Collapse
Affiliation(s)
- A M Amin
- Department of Surgery, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondichery-605006
| | | | | |
Collapse
|
11
|
al-Mishlab T, Amin AM, Ellul JP. Dieulafoy's lesion: an obscure cause of GI bleeding. J R Coll Surg Edinb 1999; 44:222-5. [PMID: 10453143] [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] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Dieulafoy's lesion is an uncommon cause of major gastrointestinal bleeding and may be difficult to recognise. It consists of an arteriole that protrudes through a tiny mucosal defect, usually within 6 cm of the gastroesophageal junction on the lesser curve of the stomach. Similar lesions have also been described in the distal oesophagus, small intestine, colon, and rectum. Awareness of the condition and experience in endoscopy are the mainstay of diagnosis. Therapeutic endoscopy is the first line of treatment. It is safe, effective and has very good long term results.
Collapse
Affiliation(s)
- T al-Mishlab
- Department of Surgery, Queen Mary's Hospital, Sidcup, Kent, U.K.
| | | | | |
Collapse
|
12
|
el Serougi AO, Amin AM. The quantitative buffy coat capillary tubes versus thin and thick blood films in the diagnosis of malaria in Saudi Arabia. J Egypt Soc Parasitol 1998; 28:17-22. [PMID: 9617039] [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] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The Quantitative Buffy Coat (QBC) capillary tube was compared with both the thin and thick films in the diagnosis of malaria among three groups of hospitalized patients. Group (1) comprised subjects with no symptoms or signs, group (2) comprised patients with fever and rigors of unknown cause, and group (3) comprised treated malarial patients consulting the hospital for a follow up. The QBC test showed more sensitivity than the two conventional methods in the three groups as follows: in group (1) the QBC was positive in 14.2% compared to 9% only in either thin or thick blood films. In group (2) the positivity was 95.1% compared to 79.3% & 76.8% in the thin and thick blood films respectively. In group (3) the sensitivity was 22.9% compared to only 5.7% in both of the thin and thick blood films. The authors found that the QBC technique in addition to its high sensitivity is very practical, reliable, simple and easy to perform. No doubt, the thin blood film still the method of choice in species identification of malaria parasites.
Collapse
Affiliation(s)
- A O el Serougi
- Department of Parasitology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | | |
Collapse
|
13
|
Mangoud AM, Ramadan ME, Morsy TA, Amin AM, Mostafa SM. The histopathological picture of the liver of hamsters experimentally infected with Leishmania D. infantum on top of Schistosoma mansoni infection. J Egypt Soc Parasitol 1998; 28:101-17. [PMID: 9617047] [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] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
No doubt, double and triple infection in a patient is not an uncommon phenomenon in the Old World. Consequently, the histopathological picture of the liver of Syrian golden hamsters experimentally infected with Leishmania. d. infantum on top of pre-infection with S. mansoni was studied. The results showed that the liver was markedly affected by the concomitant infection than infection with either parasite alone. The superadded Leishmania infection caused the early appearance of cell necrosis and fatty changes. The schistosomal granulomas were rounded in shape and well circumscribed. However, they were smaller in size and less in number when compared with schistosomal control. Also, there was a comparative decrease in the number of their cellular constitutions but without changing in the cell types. The schistosomal granulomas were surrounded with a rim of amastigotes laden macrophages. On the other hand, the leishmanial granulomas, were irregular in shape but comparatively increased in size and in number on the behalf of the schistosomal granulomas. Their cellular constitutions comparatively increased as well. So, it is concluded that the L.d. infantum infection on the top of S. mansoni infection suppressed the schistosomal pathological picture in the liver of hamsters.
Collapse
Affiliation(s)
- A M Mangoud
- Early Cancer Detection Unit, Faculty of Medicine, Zagazig University, Egypt
| | | | | | | | | |
Collapse
|
14
|
Amin AM. In vitro effect of ivermectin on the larvae of Lucilia sericata meigen in Saudi Arabia. J Egypt Soc Parasitol 1998; 28:53-8. [PMID: 9617042] [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] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Myiasis or the infestation of the living, necrotic or dead tissues of the body of man or animals by the dipterous fly larvae is a world wide welfare problem. Consequently, control of these larvae attracted the attention of many authors. In this paper, the broad spectrum antiparasitic drug, ivermectin was used in-vitro against the larvae of the green bottle fly, Lucilia sericata. The LC 50 was found to be 9 ppm (0.76-1.5) and the slope function was 0.59. This means that ivermectin is a safe and very effective larvicide for L. sericata.
Collapse
Affiliation(s)
- A M Amin
- Department of Medical Parasitology, Faculty of Medicine and Allied Sciences, King Abdul Aziz University, Jeddah, Saudi Arabia
| |
Collapse
|
15
|
Amin AM. Blastocystis hominis among apparently healthy food handlers in Jeddah, Saudi Arabia. J Egypt Soc Parasitol 1997; 27:817-23. [PMID: 9425825] [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] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A prospective study was carried out to investigate the prevalence of Blastocystis hominis among random sample of apparently healthy food handlers. A total of 250 non Saudi males over 21 years of age were examined. Ninety (36%) had pathogenic and non pathogenic intestinal parasites. A total of 143 parasites were detected in their stool specimens. Twenty were B. hominis (13.99%) while other parasites were 123 (86.01%). B. hominis was found in 20 positive cases (22.22%) with an overall rate of 8%. Of these twenty cases, two had B. hominis as a sole parasite, twelve as a double infection and six as a triple infection. Other intestinal parasites were found, Giardia lamblia (16.8%), Entamoeba histolytica (10%), E. coli (6.4%), Chilomastix mesnili (5.6%), Trichomonas hominis (1.2%), and Endolimax nana (0.8%). The helminths were represented by Ascaris lumbricoides (4%), Hymenolepis nana (3.2%), Enterobius vermicularis (1.2%) and Trichocephalus trichiura (0.8%). No doubt, B. hominis should be in mind of parasitologists and physicians when dealing with patients with gastrointestinal troubles.
Collapse
Affiliation(s)
- A M Amin
- Department of Medical Parasitology, Faculty of Medicine and Allied Sciences, King Abdul Aziz University, Jeddah, Saudi Arabia
| |
Collapse
|
16
|
Mangoud AM, Ramadan ME, Morsy TA, Amin AM, Mostafa SM. Histopathological studies of Syrian golden hamsters experimentally infected with Leishmania D. infantum. J Egypt Soc Parasitol 1997; 27:689-702. [PMID: 9425815] [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] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In the 1980s, infantile visceral leishmaniasis was documented in Al Agamy (Alexandria). The causative agent is Leishmania d. infantum and the insect vector is Phlebotomus langeroni. In this paper, Syrian golden hamsters were chosen as a model animal for histopathological studies of L. d. infantum. Twenty four male hamsters were experimentally infected with L.d. infantum. Every week, two hamsters were sacrificed and parts from the liver, heart, lung, spleen, small intestine and kidney were paraffin sectioned and stained with haematoxylin and eosin or with Giemsa stain. The leishmanial granuloma was the main histopathological changes and the liver was the main organ affected. Leishmanial granulomas were common in the liver, but few in lung and small intestine. The hepatic granulomas increased in surface areas and in number in the late stage of the infection (< 6 weeks). They were formed mainly of histiocytes, less lymphocytes and very few eosinophils with necrosis inside and bridging in between granulomas mainly occurred in the late stage of infection. Neither fibrosis nor peripheral delimitation was seen. Kupffer cell hyperplasia was seen throughout the experimental period (12 weeks). The spleen showed expansion of the red pulp and atrophy of the white pulp. The kidney showed mesangial cell proliferation and the mesangial matrix increased accompanied with amyloid deposition. All the tissue sections were photographed and the results were discussed.
Collapse
Affiliation(s)
- A M Mangoud
- Early Cancer Detection Unit, Faculty of Medicine, Zagazig University, Egypt
| | | | | | | | | |
Collapse
|
17
|
Amin AM, Morsy TA. Anti-toxoplasma antibodies in butchers and slaughtered sheep and goats in Jeddah Municipal abattoir, Saudi Arabia. J Egypt Soc Parasitol 1997; 27:913-8. [PMID: 9425834] [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] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Toxoplasma gondii is a zoonotic parasite of world-wide distribution. It is more or less endemic in all countries of the Middle East. In Jeddah Municipal abattoir, anti-Toxoplasma IgG was found to be 39% in sheep and 28% in goats as indicated by IHAT. On the other hand, anti-Toxoplasma IgG and IgM in butchers were 80% and 20% respectively, as indicated by the micro-ELISA. The risk of Toxoplasma transmission particularly, from meat inadequately cooked was discussed.
Collapse
Affiliation(s)
- A M Amin
- Department of Medical Parasitology, Faculty of Medicine and Allied Science, King Abdul Aziz University, Jeddah, Saudi Arabia
| | | |
Collapse
|
18
|
Marzouki ZM, Amin AM. The effect of Schistosoma mansoni infection on testicular lipid in mice. J Egypt Soc Parasitol 1997; 27:581-595. [PMID: 9257997] [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] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
This study was performed to establish the changes in the level of some serum hormones (Follicle stimulating hormone "FSH", Leutinizing hormone "LH" and testosterone) as well as to determine the changes in the concentrations of some testicular lipid parameters (viz., total cholesterol and total triacylglycerols) of infected mice with Schistosoma mansoni for different periods of time. Electron microscopical studies were also performed to define any histological changes in the testis upon infection with S. mansoni. The serum levels of gonadotropins (FSH, LH) showed no significant changes in infected as compared to control mice. On the other hand, the serum level of testosterone showed a significant decrease (P < 0.001) in infected as compared to control mice starting form the 14th week post infection. Testicular lipids showed a significant increase (P < 0.01) in the concentration of total cholesterol and a significant decrease (P < 0.005) in the concentration of total triacylglycerols in infected as compared to control mice especially at late stages on infection (14-20 weeks post infection). However, electron microscopical studies showed non significant histological changes in the testicular tissues of infected mice at different stages of infection. It is concluded that schistosomiasis has an important metabolic effect on testicular lipids as well as on the serum level of testosterone, whereas structural changes and spermatogenesis might require a longer period of infection and/or severe infection with higher number of cercariae.
Collapse
Affiliation(s)
- Z M Marzouki
- Department of Clinical Biochemistry, Faculty of Medicine and Allied Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | | |
Collapse
|
19
|
el-Marzouki ZM, Amin AM. Changes in serum lipids of mice experimentally infected with Schistosoma mansoni. J Egypt Soc Parasitol 1997; 27:419-29. [PMID: 9257980] [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] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Serum samples of mice infected with 80 cercariae of Schistosoma mansoni for different time periods (2-20 weeks) were used in this study. It was observed that the concentrations of serum total cholesterol and triacylglycerol decreased significantly (P < 0.001, P < 0.0001 respectively) in infected as compared to control mice starting from the fourth week post infection. Similarly, the concentration of serum high density lipoprotein-cholesterol (HDL-C) decreased significantly (P > 0.001) in infected as compared to control mice. However, the serum lipoproteins profile was variable at different stages of infection. On the other hand, the liver weight increased significantly (P < 0.0001) in infected as compared to control mice starting from the sixth week post infection. These changes might be attributed to several metabolites released by S. mansoni which affect the host hepatic tissue resulting in decreased synthesis of these parameters and their release into the circulation.
Collapse
Affiliation(s)
- Z M el-Marzouki
- Department of Clinical Biochemistry, Faculty of Medicine and Allied Sciences, King Abdulaziz University, Saudi Arabia
| | | |
Collapse
|
20
|
Zaki AM, Amin AM, Farghaly A. Flexure strength of nickel base solder joint through the different cooling methods. Egypt Dent J 1990; 36:127-38. [PMID: 1983317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- A M Zaki
- Crown and Bridge Department, Faculty of Oral and Dental Medicine, Cairo University
| | | | | |
Collapse
|
21
|
Zaki AM, Amin AM, Badawy BA. Some factors affecting the compressive strength of the gypsum-bonded investment. Egypt Dent J 1990; 36:21-31. [PMID: 2135260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- A M Zaki
- Crown and Bridge Department, Faculty of Oral and Dental Medicine, Cairo University
| | | | | |
Collapse
|
22
|
Sulaiman MI, Amin AM, Mikhail EG. Effect of schistosomiasis mansoni on open-field exploratory behavior in mice. J Egypt Soc Parasitol 1989; 19:369-79. [PMID: 2504820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The response of mice infected with Schistosoma mansoni to a novel environment has been investigated in an attempt to study the effects of the disease on brain cognitive function by using opto-varimix instrument and autotrack computer program. Two to 18 weeks infected mice showed lower ambulatory activities than their matched controls with the largest reduction occurring between weeks 6 to 10. Maximum effects were observed in week 8. The first 5 minutes of ambulatory activities, designated as the "first session", were 22.3% lower in infected mice as compared with controls. The decline in the first session activities of infected mice was slower than the controls. Infected mice showed fewer stereotype movements with maximum reduction in week 16 of infection. There was no correlation between mice ambulatory activities or stereotype movements and infection duration. The importance of these findings in relation to the course of the disease and the underlying mechanism(s) are discussed.
Collapse
|
23
|
Amin AM, Mikhail EG. Experimental schistosomiasis mansoni: electrophoretic studies on serum proteins before and after administration of oxamniquine. J Egypt Soc Parasitol 1989; 19:447-60. [PMID: 2504823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
By means of electrophoresis quantitative estimation of serum protein components were made at various intervals before and after treatment with oxamniquine. During infection of mice with S. mansoni serum protein fractions showed marked alterations. Significant increase of total protein, alpha-2 globulin and beta globulin started at week 4 and alpha-1 globulin and gamma globulin at week 6. The significant decrease of globulins at week 6 resulted in reduced albumin globulin ratios. Some of these changes developed during maturation of worms and became more evident with initiation of egg deposition. The possible cause of these variations and their significance were discussed. Oxamniquine treatment of infected mice inhibited such alterations. Administration of the drug to normal mice was followed by temporary increase of serum albumin.
Collapse
|
24
|
Amin AM, Mikhail EG. Schistosoma mansoni: tegumental surface alterations following oxamniquine treatment of infected mice. J Egypt Soc Parasitol 1989; 19:815-26. [PMID: 2507653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The in vivo effects of oxamniquine on the tegumental surface of adult Schistosoma mansoni were studied using scanning electron microscopy. Pronounced tegumental alterations were observed in all worms including marked oedema, wrinkling and distortion, atrophy, loss of tone and complete disorganization of suckers, blebbing, destruction of tubercles, collapse of sensory papillae and erosion or peeling of the surface layer. The amount of damage was more marked in males than females and varied considerably among worms recovered from the same host and even in different regions of the same worm. Damage was irreversible and all worms were eventually eliminated.
Collapse
|
25
|
Zaki AM, Amin AM, Elrefaie FA. Electrochemical stability of low gold prosthodontic alloys. Egypt Dent J 1988; 34:339-52. [PMID: 3078000] [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: 01/04/2023]
|
26
|
Amin AM, Mikhail EG. Susceptibility of Schistosoma mansoni prevalent in Saudi Arabia to oxamniquine in experimentally infected mice. J Trop Med Hyg 1988; 91:192-5. [PMID: 3136251] [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] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The therapeutic efficiency of oxamniquine against the local strain of Schistosoma mansoni was investigated in experimentally infected mice. The drug was administered orally using a human-equivalent dose of 20 mg kg-1 day-1 for 3 consecutive days (total dose of 60 mg kg-1). Oxamniquine proved to be very effective as indicated by hepatic shift, oogram changes, complete elimination of adult worms and eradication of faecal eggs.
Collapse
Affiliation(s)
- A M Amin
- Medical Parasitology Department, Faculty of Medicine and Allied Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | | |
Collapse
|
27
|
Arafa MS, Omar EA, Amin AM, Moselhi M. Eosinophilia, a manifestation of intestinal parasitic infections in Jeddah region, Saudi Arabia. J Egypt Soc Parasitol 1986; 16:707-15. [PMID: 3782918] [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: 01/07/2023]
|
28
|
Amin AM, Creveling CR, Lowe MC. Immunohistochemical localization of catechol methyltransferase in normal and cancerous breast tissues of mice and rats. J Natl Cancer Inst 1983; 70:337-42. [PMID: 6337293] [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: 01/19/2023] Open
Abstract
The immunocytochemical localization of catechol methyltransferase was determined in normal and cancerous breast tissues of inbred female Swiss-Webster mice and in normal, lactating, and cancerous breast tissues of inbred Sprague-Dawley rats. The enzyme was found to be cytoplasmically localized in ductal epithelial cells of secretory tubules in both inactive and stimulated mammary glands, in endothelial cells lining blood vessels, in fibroblasts in the connective tissue matrix, and, especially, in tumor cells. Adipose cells were nonreactive. The intensity of the immunocytochemical reaction in tumor cells was stronger than that in lactating tissues, which, in turn, was more reactive than that in normal, unstimulated breast tissues.
Collapse
|
29
|
Amin AM, Ismail AA. Immunoperoxidase localization of catechol-o-methyl transferase (COMT) in human breast cancer. Gegenbaurs Morphol Jahrb 1983; 129:125-128. [PMID: 6343177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Immunoperoxidase reaction of appropriately fixed tissue with an antiserum to catechol-o-methyl transferase (COMT), as the primary step in the peroxidase-immunoglobulin bridge technique, has been utilized for the localization of COMT in biopsy specimens of human breast neoplasm and its metastases. Our immunocytochemical identification of a strong activity of COMT in all cases studied might have a diagnostic implication in breast cancer.
Collapse
|
30
|
Abstract
A study of the cardiotoxicity induced by adriamycin (ADR) was done on the heart tissue of Sprague-Dawley rats receiving a single intravenous dose (15 mg/kg). Condensed bright orange-red fluoresced chromatin was observed in the nuclei of the myocardial cells of the left ventricle 2 h after drug injection. Just then, the intensity of the fluorescence emission started to decrease until it reached its minimum after 21 days, and disappeared completely 28 days after drug injection.
Collapse
|
31
|
Ismail AA, Hamilton JM, Amin AM. Studies of estrogen induced renal tumours in male Syrian hamsters. I. Cytochemical studies of lysosomal enzymes acid phosphatase and beta-glucuronidase. Acta Histochem 1978; 61:287-95. [PMID: 99953 DOI: 10.1016/s0065-1281(78)80074-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The localization and concentration of lysosomal enzymes acid phosphatase and beta-glucuronidase in kidney cells of Syrian hamsters after DES administration were studied. A positive cytoplasmic reaction was demonstrated for both enzymes. Increased activity of these enzymes were observed in renal tumour in contrast to normal homologous cells. These results can be explained on the basis that lysosomal enzymes were synthesized in tumour cells at a higher rate or it may be due to the invasion of tumour tissue by hydrolase rich microphages.
Collapse
|