In contrast to coherent states‖ α> which have zero Hanbury Brown and Twiss Effect [ie, g (... more In contrast to coherent states‖ α> which have zero Hanbury Brown and Twiss Effect [ie, g (2)(0)= 1], it is shown that generalized coherent states‖ n, α> are antibunched for‖ α‖ 2<(1/2). The range of values for α (real) in terms of the squeezing parameter r (real) for the ...
In this paper we investigate the quantum phase properties for the coherent superposition states (... more In this paper we investigate the quantum phase properties for the coherent superposition states (Schrödinger-cat states) for two-mode multiphoton Jaynes-Cummings model in the framework of the Pegg-Barnett formalism. We also demonstrate the behavior of the Wigner (W ) function at the phase space origin. We obtain many interesting results such as there is a clear relationship between the revival-collapse phenomenon occurring in the atomic inversion (as well as in the evolution of the W function) and the behavior of the phase distribution of both the single-mode and two-mode cases. Furthermore, we find that the phase variances of the single-mode case can exhibit revival-collapse phenomenon about the long-time behavior.
Chemioterapia : international journal of the Mediterranean Society of Chemotherapy, 1984
Prophylactic chemotherapy was given to 100 patients who underwent cesarean section. Ampicillin wa... more Prophylactic chemotherapy was given to 100 patients who underwent cesarean section. Ampicillin was given to 50 patients and I.V. metronidazole to the other 50 (in a single dose of 500 mg to 20 and in 3 doses to 30 patients). The overall febrile morbidity was 20%. Metronidazole was superior in reducing febrile morbidity and wound sepsis, compared to ampicillin (P less than 0.05). This study supports the concept of prophylactic chemotherapy being beneficial to the obstetric patient. A single dose of 500 mg I.V. is satisfactory for prophylactic use in cesarean section.
Eclampsia is the occurrence of generalized convulsions during pregnancy, labor or within seven da... more Eclampsia is the occurrence of generalized convulsions during pregnancy, labor or within seven days of delivery, not due to epilepsy or other convulsive disorders. It is largely a preventable disease provided the pregnant women get regular antenatal care. Despite all prevention measures, diagnostic modalities and intensive treatment, it is still one of the leading causes of maternal mortality in the developing world. In this review, we present definitions, epidemiologic data, pathophysiology, diagnosis and management of this life threatening condition.
Vitamin D analogues have been found to be effective in treating the skin lesions of psoriasis. Th... more Vitamin D analogues have been found to be effective in treating the skin lesions of psoriasis. The therapy is thought to work through the vitamin D receptors, resulting in alteration of the proliferation/differentiation balance of the cells. Vitamin D also has an effect on T helper cells, which have a major role in the pathogenesis of psoriasis. There is controversy about the association of vitamin D receptor gene polymorphisms with psoriasis in different populations, and it is a factor that might influence the treatment of these patients. To study vitamin D receptor gene polymorphisms using two restriction enzymes in a group of Egyptian patients with psoriasis. In total, 50 patients with psoriasis were examined using restriction fragment length polymorphism analysis to study ApaI and TaqI genotypes of the vitamin D receptor in a sample of Egyptian patients, and compared with 50 healthy control subjects. We did not find any significant difference in ApaI and TaqI vitamin D receptor gene polymorphisms between patients and controls. There is ethnic variability in vitamin D receptor gene polymorphisms. The lack of significant prevalence of the studied gene polymorphisms in our population suggests that their association with other functionally known gene polymorphism might have a role in the pathogenesis of psoriasis.
Background Apoptosis of eosinophils is of increasingly important value in modulating allergic air... more Background Apoptosis of eosinophils is of increasingly important value in modulating allergic airway inflammation in asthma. Our purpose was to investigate the degree of expression of the antiapoptotic B-cell lymphoma/leukaemia-2 (Bcl-2) protein in sputum eosinophils during acute asthma exacerbation and its relationship with exacerbation severity. Methods Sputum was obtained from 33 asthmatic children and 15 healthy children as a control group. Patients were studied during an acute asthma exacerbation. They were classified according to the severity of exacerbation into mild, moderate and severe (n 5 11 for each). Patients with severe exacerbation were followed up until remission and another sputum sample was obtained. Number of sputum eosinophils was expressed as percentage of leucocytes. Bcl-2 expression in sputum eosinophils was assessed by immunohistochemical staining techniques; the results were expressed as percentage of positively stained cells over total eosinophils. Results Sputum eosinophils and Bcl-2 1 eosinophils' percentages were significantly higher in patients with acute exacerbation than controls (Po0.01). Patients with severe exacerbation had significantly higher sputum Bcl-2 1 eosinophils' percentage than those with mild-to-moderate exacerbation (mean AE SD 5 42.4 AE 31.96% vs. 5.7 AE 14.5%, Po0.01). A significant negative correlation was found between Bcl-2 1 eosinophils' percentage and peak expiratory flow rate % predicted (Po0.05). After remission, patients with severe exacerbation showed a significant decrease of Bcl-2 1 eosinophils' percentage (Po0.05). Conclusion Our findings suggest that Bcl-2 prolongs survival and decreases apoptosis of airway eosinophils in asthma especially during exacerbation. Eosinophil apoptosis and Bcl-2 represent a target for new and effective therapeutic strategies of asthma.
A modified surgical technique for carrying out cervical cerclage by the transabdominal route duri... more A modified surgical technique for carrying out cervical cerclage by the transabdominal route during pregnancy is presented. It is designed for the patient whose cervix is so short or damaged that the transvaginal procedure is not feasible. Basically, the method consists of a standard laparotomy at which a nylon tape is placed around the uterine isthmus medial to the uterine vessels and fixed to the anterior isthmus, Mackenrodt's ligaments, and to the insertions of the uterosacral ligaments. Results in 10 cases are reported. There were no operative or postoperative complications. One case was terminated by early spontaneous abortion and 2 by hysterotomy at 26 and 30 weeks, respectively, because of placenta previa. Seven cases were terminated by cesarean section at or near term, with delivery of 7 infants who survived. The 7 mothers had had a total of 50 prior pregnancies with only 5 living children; 4 of them had ahd 25 prior pregnancies with no living children. Various aspects o...
Pre-eclampsia was diagnosed in 40 patients after the exclusion --as far as possible --of chronic ... more Pre-eclampsia was diagnosed in 40 patients after the exclusion --as far as possible --of chronic renal or hypertensive disease. Percutaneous renal biopsies were obtained from those patients. Pathologic examination of the 32 adequate biopsies showed the specific pre-eclamptic lesion in a pure form in only 53.1%. A variety of lesions were seen in the other biopsies: chronic pyelonephritis, chronic proliferative glomerulonephritis, benign nephrosclerosis, and minimal lesion nephrotic syndrome. One biopsy was apparently normal. The high incidence of chronic pyelonephritis (21.9%) was considered an important finding in Egyptian pregnant women. The significance of these findings as regards the response to treatment, and remote prognosis was outlined.
In contrast to coherent states‖ α> which have zero Hanbury Brown and Twiss Effect [ie, g (... more In contrast to coherent states‖ α> which have zero Hanbury Brown and Twiss Effect [ie, g (2)(0)= 1], it is shown that generalized coherent states‖ n, α> are antibunched for‖ α‖ 2<(1/2). The range of values for α (real) in terms of the squeezing parameter r (real) for the ...
In this paper we investigate the quantum phase properties for the coherent superposition states (... more In this paper we investigate the quantum phase properties for the coherent superposition states (Schrödinger-cat states) for two-mode multiphoton Jaynes-Cummings model in the framework of the Pegg-Barnett formalism. We also demonstrate the behavior of the Wigner (W ) function at the phase space origin. We obtain many interesting results such as there is a clear relationship between the revival-collapse phenomenon occurring in the atomic inversion (as well as in the evolution of the W function) and the behavior of the phase distribution of both the single-mode and two-mode cases. Furthermore, we find that the phase variances of the single-mode case can exhibit revival-collapse phenomenon about the long-time behavior.
Chemioterapia : international journal of the Mediterranean Society of Chemotherapy, 1984
Prophylactic chemotherapy was given to 100 patients who underwent cesarean section. Ampicillin wa... more Prophylactic chemotherapy was given to 100 patients who underwent cesarean section. Ampicillin was given to 50 patients and I.V. metronidazole to the other 50 (in a single dose of 500 mg to 20 and in 3 doses to 30 patients). The overall febrile morbidity was 20%. Metronidazole was superior in reducing febrile morbidity and wound sepsis, compared to ampicillin (P less than 0.05). This study supports the concept of prophylactic chemotherapy being beneficial to the obstetric patient. A single dose of 500 mg I.V. is satisfactory for prophylactic use in cesarean section.
Eclampsia is the occurrence of generalized convulsions during pregnancy, labor or within seven da... more Eclampsia is the occurrence of generalized convulsions during pregnancy, labor or within seven days of delivery, not due to epilepsy or other convulsive disorders. It is largely a preventable disease provided the pregnant women get regular antenatal care. Despite all prevention measures, diagnostic modalities and intensive treatment, it is still one of the leading causes of maternal mortality in the developing world. In this review, we present definitions, epidemiologic data, pathophysiology, diagnosis and management of this life threatening condition.
Vitamin D analogues have been found to be effective in treating the skin lesions of psoriasis. Th... more Vitamin D analogues have been found to be effective in treating the skin lesions of psoriasis. The therapy is thought to work through the vitamin D receptors, resulting in alteration of the proliferation/differentiation balance of the cells. Vitamin D also has an effect on T helper cells, which have a major role in the pathogenesis of psoriasis. There is controversy about the association of vitamin D receptor gene polymorphisms with psoriasis in different populations, and it is a factor that might influence the treatment of these patients. To study vitamin D receptor gene polymorphisms using two restriction enzymes in a group of Egyptian patients with psoriasis. In total, 50 patients with psoriasis were examined using restriction fragment length polymorphism analysis to study ApaI and TaqI genotypes of the vitamin D receptor in a sample of Egyptian patients, and compared with 50 healthy control subjects. We did not find any significant difference in ApaI and TaqI vitamin D receptor gene polymorphisms between patients and controls. There is ethnic variability in vitamin D receptor gene polymorphisms. The lack of significant prevalence of the studied gene polymorphisms in our population suggests that their association with other functionally known gene polymorphism might have a role in the pathogenesis of psoriasis.
Background Apoptosis of eosinophils is of increasingly important value in modulating allergic air... more Background Apoptosis of eosinophils is of increasingly important value in modulating allergic airway inflammation in asthma. Our purpose was to investigate the degree of expression of the antiapoptotic B-cell lymphoma/leukaemia-2 (Bcl-2) protein in sputum eosinophils during acute asthma exacerbation and its relationship with exacerbation severity. Methods Sputum was obtained from 33 asthmatic children and 15 healthy children as a control group. Patients were studied during an acute asthma exacerbation. They were classified according to the severity of exacerbation into mild, moderate and severe (n 5 11 for each). Patients with severe exacerbation were followed up until remission and another sputum sample was obtained. Number of sputum eosinophils was expressed as percentage of leucocytes. Bcl-2 expression in sputum eosinophils was assessed by immunohistochemical staining techniques; the results were expressed as percentage of positively stained cells over total eosinophils. Results Sputum eosinophils and Bcl-2 1 eosinophils' percentages were significantly higher in patients with acute exacerbation than controls (Po0.01). Patients with severe exacerbation had significantly higher sputum Bcl-2 1 eosinophils' percentage than those with mild-to-moderate exacerbation (mean AE SD 5 42.4 AE 31.96% vs. 5.7 AE 14.5%, Po0.01). A significant negative correlation was found between Bcl-2 1 eosinophils' percentage and peak expiratory flow rate % predicted (Po0.05). After remission, patients with severe exacerbation showed a significant decrease of Bcl-2 1 eosinophils' percentage (Po0.05). Conclusion Our findings suggest that Bcl-2 prolongs survival and decreases apoptosis of airway eosinophils in asthma especially during exacerbation. Eosinophil apoptosis and Bcl-2 represent a target for new and effective therapeutic strategies of asthma.
A modified surgical technique for carrying out cervical cerclage by the transabdominal route duri... more A modified surgical technique for carrying out cervical cerclage by the transabdominal route during pregnancy is presented. It is designed for the patient whose cervix is so short or damaged that the transvaginal procedure is not feasible. Basically, the method consists of a standard laparotomy at which a nylon tape is placed around the uterine isthmus medial to the uterine vessels and fixed to the anterior isthmus, Mackenrodt's ligaments, and to the insertions of the uterosacral ligaments. Results in 10 cases are reported. There were no operative or postoperative complications. One case was terminated by early spontaneous abortion and 2 by hysterotomy at 26 and 30 weeks, respectively, because of placenta previa. Seven cases were terminated by cesarean section at or near term, with delivery of 7 infants who survived. The 7 mothers had had a total of 50 prior pregnancies with only 5 living children; 4 of them had ahd 25 prior pregnancies with no living children. Various aspects o...
Pre-eclampsia was diagnosed in 40 patients after the exclusion --as far as possible --of chronic ... more Pre-eclampsia was diagnosed in 40 patients after the exclusion --as far as possible --of chronic renal or hypertensive disease. Percutaneous renal biopsies were obtained from those patients. Pathologic examination of the 32 adequate biopsies showed the specific pre-eclamptic lesion in a pure form in only 53.1%. A variety of lesions were seen in the other biopsies: chronic pyelonephritis, chronic proliferative glomerulonephritis, benign nephrosclerosis, and minimal lesion nephrotic syndrome. One biopsy was apparently normal. The high incidence of chronic pyelonephritis (21.9%) was considered an important finding in Egyptian pregnant women. The significance of these findings as regards the response to treatment, and remote prognosis was outlined.
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Papers by M. Mahran