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Ishido H, Chiba S, Takahashi H, Isa M, Ogawa Y, Kubota H, Imanishi A, Omori Y, Ono T, Tsutsui K, Han G, Kondo H, Tsuji H, Nakamagoe K, Ishii A, Tanaka K, Tamaoka A, Shimizu T, Nishino S, Miyamoto T, Kanbayashi T. Characteristics of hypersomnia due to inflammatory demyelinating diseases of the central nervous system. BMJ Neurol Open 2023; 5:e000428. [PMID: 37396796 PMCID: PMC10314432 DOI: 10.1136/bmjno-2023-000428] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/06/2023] [Indexed: 07/04/2023] Open
Abstract
Background Neuromyelitis optica spectrum disorder (NMOSD) diagnostic criteria for inflammatory demyelinating central nervous system diseases included symptomatic narcolepsy; however, no relevant case-control studies exist. We aimed to examine the relationship among cerebrospinal fluid orexin-A (CSF-OX) levels, cataplexy and diencephalic syndrome; determine risk factors for low-and-intermediate CSF-OX levels (≤200 pg/mL) and quantify hypothalamic intensity using MRI. Methods This ancillary retrospective case-control study included 50 patients with hypersomnia and 68 controls (among 3000 patients) from Akita University, the University of Tsukuba and community hospitals (200 facilities). Outcomes were CSF-OX level and MRI hypothalamus-to-caudate-nucleus-intensity ratio. Risk factors were age, sex, hypersomnolence and MRI hypothalamus-to-caudate-nucleus-intensity ratio >130%. Logistic regression was performed for the association between the risk factors and CSF-OX levels ≤200 pg/mL. Results The hypersomnia group (n=50) had significantly more cases of NMOSD (p<0.001), diencephalic syndrome (p=0.006), corticosteroid use (p=0.011), hypothalamic lesions (p<0.023) and early treatment (p<0.001). No cataplexy occurred. In the hypersomnia group, the median CSF-OX level was 160.5 (IQR 108.4-236.5) pg/mL and median MRI hypothalamus-to-caudate-nucleus-intensity ratio was 127.6% (IQR 115.3-149.1). Significant risk factors were hypersomnolence (adjusted OR (AOR) 6.95; 95% CI 2.64 to 18.29; p<0.001) and MRI hypothalamus-to-caudate-nucleus-intensity ratio >130% (AOR 6.33; 95% CI 1.18 to 34.09; p=0.032). The latter was less sensitive in predicting CSF-OX levels ≤200 pg/mL. Cases with MRI hypothalamus-to-caudate-nucleus-intensity ratio >130% had a higher rate of diencephalic syndrome (p<0.001, V=0.59). Conclusions Considering orexin as reflected by CSF-OX levels and MRI hypothalamus-to-caudate-nucleus-intensity ratio may help diagnose hypersomnia with diencephalic syndrome.
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Affiliation(s)
- Hideaki Ishido
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
- Neurology, Dokkyo Ika Daigaku Saitama Iryo Center, Koshigaya, Saitama, Japan
- Neurology, Hakusuikai Hatsuishi Hospital, Kashiwa, Chiba, Japan
| | - Shigeru Chiba
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
- Psychiatry, Ibaraki Prefectural Medical Center of Psychiatry, Kasama, Ibaraki, Japan
- Psychiatry, Minamisaitama Hospital, Koshigaya, Saitama, Japan
| | - Hana Takahashi
- Neurology, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Megumi Isa
- Neurology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Yasuhiro Ogawa
- General Medicine, Ibaraki Prefectural University of Health Sciences, Inashiki-gun, Ibaraki, Japan
| | | | - Aya Imanishi
- Psychiatry, Akita University, Akita, Akita, Japan
| | - Yuki Omori
- Psychiatry, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku, Tokyo, Japan
| | - Taisuke Ono
- Geriatric Medicine, Kanazawa Medical University, Kahoku-gun, Ishikawa, Japan
| | - Ko Tsutsui
- Psychiatry, Akita University, Akita, Akita, Japan
- Psychiatry, Kato Hospital, Akita, Akita, Japan
| | - GoEun Han
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hideaki Kondo
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
- General Medicine, Institute of Biomedical Sciences, Nagasaki University, Nagasaki, Nagasaki, Japan
| | - Hiroshi Tsuji
- Neurology, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | | | - Akiko Ishii
- Neurology, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Keiko Tanaka
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Niigata, Japan
| | - Akira Tamaoka
- Neurology, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Neurology, Tsukuba Memorial Hospital, Tsukuba, Ibaraki, Japan
| | - Tetsuo Shimizu
- Department of Mental Health and Welfare, Akita Mental Health and Welfare Center, Akita, Akita, Japan
| | - Seiji Nishino
- Psychiatry, Sleep and Circadian Neurobiology Laboratory, Stanford University, Stanford, California, USA
| | - Tomoyuki Miyamoto
- Neurology, Dokkyo Ika Daigaku Saitama Iryo Center, Koshigaya, Saitama, Japan
| | - Takashi Kanbayashi
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
- Neurology, Dokkyo Ika Daigaku Saitama Iryo Center, Koshigaya, Saitama, Japan
- Psychiatry, Ibaraki Prefectural Medical Center of Psychiatry, Kasama, Ibaraki, Japan
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Isa M, Hongo Y, Sakamoto N, Yamazaki K, Takazaki H, Asakuma J, Ikewaki K, Suzuki K. Immune checkpoint inhibitor-related myositis and myocarditis with multiple myositis-specific/-associated antibodies. J Neurol Sci 2023; 444:120528. [PMID: 36565689 DOI: 10.1016/j.jns.2022.120528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 12/09/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Affiliation(s)
- Megumi Isa
- Division of Neurology, Anti-aging, and Vascular Medicine. Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Yu Hongo
- Division of Neurology, Anti-aging, and Vascular Medicine. Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Naohiro Sakamoto
- Division of Neurology, Anti-aging, and Vascular Medicine. Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Keishi Yamazaki
- Division of Neurology, Anti-aging, and Vascular Medicine. Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Hiroshi Takazaki
- Division of Neurology, Anti-aging, and Vascular Medicine. Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Junichi Asakuma
- Department Urology, National Hospital Organization, Nishisaitama-Chuo Hospital, Tokorozawa, Japan
| | - Katsunori Ikewaki
- Division of Neurology, Anti-aging, and Vascular Medicine. Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kazushi Suzuki
- Division of Neurology, Anti-aging, and Vascular Medicine. Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan.
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Ayuti SR, Fikri M, Rastina R, Herrialfian H, Helmi TZ, Isa M, Zamzami RS. Evaluating of The Addition Coconut Pulp (Cocos Nucifera L) Fermentation in Feed and The Effect on Percentage of Carcass Broiler Chicken. IJTVBR 2022. [DOI: 10.21157/ijtvbr.v7i1.27559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Broilers are chickens with high meat production. The productivity of broiler is seen from the percentage of carcass and abdominal fat. This study aims to determine the effect of giving fermented coconut pulp (Cocos nucifera L) on the percentage of carcass and abdominal fat of broilers. This study used a completely randomized design experimental method (CRD) consisting of 6 treatments and 6 replications so that the total observations were 36 units of observation. Each treatment had P1: 100% commercial feed without fermented coconut dregs, P2: 90% commercial feed + 10% fermented coconut dregs, P3: 80% commercial feed + 20% fermented coconut dregs, P4: 70% commercial feed + 30 % fermented coconut dregs, P5: 60% commercial feed + 40% fermented coconut dregs, P6 : 50% commercial feed + 50% fermented coconut dregs. The data were analyzed using the analysis of variance which was preceded by the battle test, followed by the Tukey test using the SPSS program. The analysis of variance showed significantly different results (P0.05) on the percentage of carcass and abdominal fat of the broiler. Tukey's follow-up test on the carcass showed a significant difference (P0.05) and there was no significant difference in fat (P0.05). It can be concluded that the supplementary feed of fermented coconut pulp can be used 40% as additional feed to increase the carcass percentage but not reduce the broiler abdominal fat percentage.
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Admi M, Sari Y, Rasmaidar R, Amiruddin A, Helmi TZ, Akmal Y, Isa M. Sensitivity Test of Bandotan Leaf Extract (Ageratum conyzoides) Against Pseudomonas aeruginosa Bacteria. IJTVBR 2022. [DOI: 10.21157/ijtvbr.v7i1.28504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The leaves of Bandotan (Ageratum conyzoides) are a plant thought to have antibacterial properties. This study aims to determine the sensitivity of Bandotan leaf extract in inhibiting the growth of the bacteria Pseudomonas aeruginosa. This study used a stock extract of Bandotan leaves from the Pharmacology Laboratory and a bacterial isolate of P. aeruginosa in the Microbiology Laboratory of the Faculty of Veterinary Medicine, Universitas Syiah Kuala, which was identified by Gram staining, indole test, Methyl Red test, and confectionery test. The research method was carried out by planting the re-identified bacterial isolates on Nutrient Broth (NB) media, incubated at 37ºC for 24 hours. Then the turbidity composition of the isolates was arranged to match the turbidity in 0.5 McFarland solution. Furthermore, the sensitivity test of the extract on Mueller Hinton Agar (MHA) media was carried out by levelling the bacterial isolates on the surface of the media and attaching a disc containing bandotan leaf extract with a concentration of 25%, 50%, 75% and gentamicin disk as a positive control and distilled water as a negative control. All treatments were incubated at 37ºC for 24 hours, and then the inhibition zone was measured using millimeters (mm) callipers. The results showed that concentrations of 25%, 50% and 75%, respectively, had an inhibition zone of 8.16 mm, 9.82 mm, and 16.08 mm, respectively. In contrast, the average inhibition zone for gentamicin was 25, 30 mm and 0 mm distilled water. Therefore, it can be concluded that the Bandotan leaf extract is sensitive to growth inhibition of P. aeruginosa bacteria.
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Ihdayhid AR, Motoyama S, Fujimoto S, Isa M, Nerlekar N, Kato E, Miyajima K, Comella A, Kamo Y, Sarai M, Kawai H, Arakita K, Hislop-Jambrich J, Cameron J, Ko B. P7 The impact of coronary calcification on diagnostic performance of workstation CT derived fractional flow reserve - a multicentre experience. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehz872.014] [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: 11/13/2022] Open
Abstract
Abstract
Background
On-site workstation based computed tomography derived fractional flow reserve (CT-FFR) is an emerging method to assess the vessel specific ischaemia in coronary artery disease (CAD). The impact of coronary calcification on its diagnostic performance is unknown.
Purpose
To evaluate the impact of coronary calcification on the diagnostic performance of reduced-order CT-FFR at detecting vessel specific ischaemia.
Methods
This is a retrospective pooled analysis of 141 patients with suspected CAD enrolled from 3 global centres who underwent CT-coronary angiography (CTA), onsite CT-FFR and invasive FFR. Coronary calcification was assessed by Agatston score (AS). The diagnostic performance of CT-FFR (≤0.8) and CTA (≥50%) in evaluation of vessel specific ischaemia (FFR ≤ 0.8) was assessed across AS quartiles (Q1-4). A comparison of diagnostic performance of the low to mid AS (Q1 to Q3) versus high AS (Q4) was performed.
Results
Mean age and median AS was 65.8 ± 9.9 and 327.3 (interquartile range = 78.5 – 798.1). Diagnostic accuracy, sensitivity and specificity of CT-FFR for low-mid AS (0-798) and high AS (799-4019) were 77.4% vs 82.9%; 78.9% vs 94.7%; 68.8% vs 76.5% respectively with no statistical difference between the two groups. The AUC for ischaemia of CT-FFR in low to mid AS was comparable with AUC in the high AS (0.76 [95% CI: 0.66-0.86] vs 0.84 [0.69-0.99]; P = 0.397). The AUC for ischemia for CT-FFR in both low to mid AS and high AS was significantly higher than for CTA (0.76 [0.66-0.86] vs 0.57 [0.50-0.64]; P = 0.003 and 0.84 [0.69-0.99] vs 0.48 [0.38-0.57]; P < 0.001 respectively).
Conclusion
On-site workstation CT-FFR demonstrated consistently high diagnostic performance in patients with high AS. Its diagnostic performance was superior when compared with significant stenosis assessment on CTA across all spectrum of Agatston scores.
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Affiliation(s)
- A R Ihdayhid
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - S Motoyama
- Fujita Health University, Department of Cardiology, Fujita, Japan
| | - S Fujimoto
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - M Isa
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - N Nerlekar
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - E Kato
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - K Miyajima
- Fujita Health University, Department of Cardiology, Fujita, Japan
| | - A Comella
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - Y Kamo
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - M Sarai
- Fujita Health University, Department of Cardiology, Fujita, Japan
| | - H Kawai
- Fujita Health University, Department of Cardiology, Fujita, Japan
| | - K Arakita
- Canon Medical Systems Japan, Otawara, Japan
| | | | - J Cameron
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - B Ko
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
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Ihdayhid AR, Fujimoto S, Motoyama S, Comella A, Kato E, Miyajima K, Isa M, Kamo Y, Sarai M, Kawai H, Arakita K, Hislop-Jambrich J, Cameron J, Seneviratne S, Ko B. P6187Multicentre diagnostic performance of on-site workstation CT derived fractional flow reserve. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0793] [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: 11/13/2022] Open
Abstract
Abstract
Background
On-site workstation based computed tomography derived fractional flow reserve (CT-FFR) is an emerging method to assess vessel specific ischaemia in coronary artery disease (CAD). Global data on its diagnostic performance when compared with CT coronary angiography (CTA) is limited.
Purpose
To evaluate the on-site multicentre diagnostic performance of reduced-order CT-FFR at detecting vessel specific ischaemia.
Method
This is a retrospective pooled analysis of 141 patients (204 vessels) with suspected CAD enrolled from 3 global centres who underwent CTA, onsite CT-FFR and invasive FFR. On-site CT-FFR was performed using a reduced order model on a standard desktop computer with dedicated software. The per vessel diagnostic performance of CT-FFR (≤0.8) for vessel specific ischemia (FFR≤0.8) was compared with CTA (≥50% stenosis).
Results
Mean age was 65.8±9.9, 70.7% were male. FFR significant stenosis was present in 34.3% (70/204) of vessels. Pearson correlation of CT-FFR for invasive FFR was 0.52, P<0.001. Bland Altman analysis demonstrated a mean difference of 0.06±0.15 (95% limits of agreement −0.22 to 0.35). Per vessel diagnostic accuracy, sensitivity and specificity of CT-FFR and CTA were 79.9% vs 53.5%; 78.6% vs 85.7%; 80.6% vs 35.9% respectively. Diagnostic performance as assessed by area under the receiver operator curve (AUC) for CT FFR was superior to CTA (0.82 [95% CI 0.76–0.88] vs 0.61 [0.55–0.67]; P<0.001).
Conclusion
On-site workstation CT-FFR demonstrated high per vessel diagnostic performance and was superior when compared with CTA in assessment of vessel specific ischaemia as assessed by invasive FFR in a multicentre setting.
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Affiliation(s)
- A R Ihdayhid
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - S Fujimoto
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - S Motoyama
- Fujita Health University, Department of Cardiology, Fujita, Japan
| | - A Comella
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - E Kato
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - K Miyajima
- Fujita Health University, Department of Cardiology, Fujita, Japan
| | - M Isa
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - Y Kamo
- Juntendo University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - M Sarai
- Fujita Health University, Department of Cardiology, Fujita, Japan
| | - H Kawai
- Fujita Health University, Department of Cardiology, Fujita, Japan
| | - K Arakita
- Canon Medical Systems Japan, Otawara, Japan
| | | | - J Cameron
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - S Seneviratne
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - B Ko
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
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Othman M, Isa M, Mazlee MN, Piah M, Rahman NA. Simulation of 33kV String Insulators Using Finite Element Method (FEM). 2019 IEEE Student Conference on Research and Development (SCOReD) 2019. [DOI: 10.1109/scored.2019.8896273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Rahman NA, Isa M, Rohani MNKH, Hamid HA, Abdullah MMAB. Electric Field and Voltage Distribution (EFVD) Analysis for 132kV Bushing Transformer Using Finite Element Analysis. IOP Conf Ser : Mater Sci Eng 2019; 551:012019. [DOI: 10.1088/1757-899x/551/1/012019] [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]
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Akmal M, Gholib G, Rinidar R, Fitriani F, Helmi TZ, Sugito S, Isa M, Nurliana N, Wahyuni S, Dasrul D, Yaman MA. The concentration of testosterone, pituitary adenylate cyclase-activating polypeptide, and protamine 1 in the serum of male chicken following administration of epididymis and testicular extracts and their combination. Vet World 2019; 12:1101-1107. [PMID: 31528039 PMCID: PMC6702581 DOI: 10.14202/vetworld.2019.1101-1107] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/12/2019] [Indexed: 01/16/2023] Open
Abstract
Bakcground and Aim Testis and epididymis are male reproductive organs that play an important role in spermatogenesis. These two organs are rich in the content of hormones and other molecules needed in the process of spermatogenesis which affect the quality of the spermatozoa. The objective of this study was to examine the effect of the administration of epididymis and testicular extracts and their combination on testosterone, pituitary adenylate cyclase-activating polypeptide (PACAP), and protamine 1 (PRM1) concentrations in the serum of male chicken. Materials and Methods Twenty male chickens (broiler strain Cp707), aged 3 weeks and weighing 800-1000 g, were randomly divided into four different groups including a control group (T0) = injected with 1 ml normal saline and treatment groups: T1 = injected with 1 ml epididymis extract, T2 = injected with 1 ml testicular extract, and T3 = injected with a combination of 1 ml epididymis + 1 ml testicular extract. The experiment was conducted for 13 days and at the end of the study (day 14), the chickens were sacrificed to obtain the serum. Furthermore, the concentrations of testosterone, PACAP, and PRM1 were then measured by using an enzyme-linked immunosorbent assay technique. Results The concentrations of PACAP and PRM1 did not show a significant difference between treatment groups (T1, T2, and T3) and control group (T0) (p>0.05). However, the concentration of testosterone showed a significantly higher difference in a group injected with a combination of 1 ml epididymis and 1 ml testicular extracts (T3) compared to the control group (T0) (p<0.05). Conclusion The administration of epididymis and testicular extracts and their combination did not affect the increase of PACAP and PRM1 concentration. However, a combination of these extracts significantly affects the increase of testosterone concentration in the serum of male chicken.
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Affiliation(s)
- Muslim Akmal
- Laboratory of Histology, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia
| | - Gholib Gholib
- Laboratory of Physiology, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia
| | - Rinidar Rinidar
- Laboratory of Pharmacology, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia
| | - Fitriani Fitriani
- Laboratory of Histology, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia
| | - T Zahrial Helmi
- Laboratory of Biochemistry, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia
| | - Sugito Sugito
- Laboratory of Clinic, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia
| | - M Isa
- Laboratory of Biochemistry, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia
| | - Nurliana Nurliana
- Laboratory of Veterinary Public Health, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia
| | - Sri Wahyuni
- Laboratory of Anatomy, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia
| | - Dasrul Dasrul
- Laboratory of Reproduction, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia
| | - M Aman Yaman
- Field Laboratory of Animal Sciences, Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Aceh, Indonesia
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Isa M, Othman M, Abdullah AZ, Piah MAM, Rahman NA, Mazlee MN. Characteristics of RTV Coating on Ceramic Insulator. 2019 IEEE International Conference on Automatic Control and Intelligent Systems (I2CACIS) 2019. [DOI: 10.1109/i2cacis.2019.8825080] [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]
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Isa M, Coombs P, Cameron J, Mirzaee S. Detection of Achilles Tendon Xanthoma in Patients with Phenotypical Familial Hypercholesterolemia: Physical Examination vs Sonography. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mirzaee S, Lin A, Isa M, Cameron J, Alison J, Zaman S, Nicholls S. The Incidence of Fatal Arrhythmia Among Patients with Early Onset Acute Coronary Syndrome and Familial Hypercholesterolaemia. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mirzaee S, Doery J, Lu Z, Isa M, Ihdayhid A, Cameron J, Nasis A, Nicholls S. Effects of Postprandial Lipaemia on Cardiovascular Disease in Familial Hypercholesterolaemia. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Thein P, Isa M, Wong E, Brown A, Cameron J, Nasis A. Association of Global Longitudinal Strain with the Development of Adverse Left Ventricular Remodelling: A Systematic Review and Meta-Analysis. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mirzaee S, Lin A, Isa M, Thakur U, Nerlekar N, Cameron J, Nasis A, Nicholls S, Wong D. Coronary Artery Disease and Pericoronary Adipose Tissue Attenuation by Computed Tomography in Familial Hypercholesterolemia. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mirzaee S, Isa M, Thein P, Coombs P, Nasis A, Cameron J. The Role of Ultrasound in the Diagnosis of Tendon Xanthoma in Patients With Familial Hypercholesterolaemia: A Review. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sugito ., Hambal M, Isa M, Nurliana ., Delima D. Administration of extract Salix tetrasperma combined with extract of turmeric and neem to improve eggs quality of chicken reared under heat stress. JITV 2015. [DOI: 10.14334/jitv.v20i3.1186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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18
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Isa M, Iqbal K, Afzal M, Buzdar S, Chow J. Poster - Thur Eve - 60: Physical and dynamic wedges in radiotherapy for rectal cancer: A dosimetric comparison. Med Phys 2012; 39:4636. [DOI: 10.1118/1.4740168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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El-Shabrawi MHF, El Din ZE, Isa M, Kamal N, Hassanin F, El-Koofy N, El-Batran G, El-Makarem SA, El-Hennawy A. Colorectal polyps: a frequently-missed cause of rectal bleeding in Egyptian children. ACTA ACUST UNITED AC 2011; 31:213-8. [PMID: 21781415 DOI: 10.1179/1465328111y.0000000014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
OBJECTIVES Colorectal polyps are important causes of rectal bleeding but they have been infrequently reported in Egyptian children. The prevalence and characteristics of colorectal polyps in a consecutive cohort of Egyptian children with rectal bleeding are presented. METHODS A total of 174 children aged 2-12 years [mean (SD) 6.4 (3.7)] with fresh rectal bleeding were enrolled prospectively. Rectal examination, laboratory investigations and fibre-optic colonoscopy were performed in all patients. RESULTS The source of bleeding was diagnosed as colorectal polyps in 100 patients (57.4%) and was owing to other causes in 74. The interval between onset of symptoms and presentation ranged from 2 to 48 months [mean (SD) 18.3 (16)]. In patients with other causes, rectal bleeding was attributed to intestinal amoebiasis (42), diarrhoea/dysentery (18), severe constipation (2) and intestinal schistosomiasis (2). Polyps were solitary in 56 children (56%) and ranged from 2 to 5 in 34 (34%) and >5 in 10 (10%). Polyps were confined to the rectum in 68 children, were rectosigmoid in 20, in the descending colon in 8, and splenic flexure in 4. Polyps were juvenile in 84 children (84%), inflammatory in 10 (10%) and hyperplastic, schistosomal or adenomatous in 2 each (6%). Colonoscopic polypectomy was successful and arrested the bleeding in all cases. CONCLUSION In Egyptian children, colorectal polyps are relatively common and an easily treatable cause of fresh rectal bleeding. They should be high on the list of differential diagnoses.
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Abstract
PURPOSE To determine minimum inhibitory concentration (MIC) of various anti-tuberculosis drugs for Mycobacterium avium complex (MAC) strains isolated from clinical samples. METHODS Forty-nine human isolates of MAC were tested for susceptibility to nine chemotherapeutic agents. All isolates were from Indian patients suffering from chronic pulmonary mycobacteriosis. Drug susceptibility was performed both by agar dilution and MIC method. MIC values were analysed, both visually and by enzyme-linked immunosorbent assay reader. RESULTS More than 40% of the MAC isolates were sensitive to ciprofloxacine (48.98%), amikacin (46.94%) and roxithromycin (42.86%) by the MIC method. In contrast, the isolates showed high degree of resistance to the first line antituberculosis drugs: only 28.6% were sensitive to rifampicine, 22.85% to isoniazid and ethambutol each and 36.7% were sensitive to streptomycin. In addition, 22.85% of the strains were sensitive to clofazimine and 34.7% to kanamycin. CONCLUSIONS Results of the study confirm the suitability of the rapid broth micro dilution (MIC) method as a simple yet reliable method to assay for the drug susceptibility of nontuberculosis mycobacterium.
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Affiliation(s)
- D Venugopal
- Department of Microbiology, VP Chest Institute, University of Delhi, New Delhi - 110 007, India
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Dam T, Isa M, Bose M. Drug-sensitivity profile of clinical Mycobacterium tuberculosis isolates--a retrospective study from a chest-disease institute in India. J Med Microbiol 2005; 54:269-271. [PMID: 15713610 DOI: 10.1099/jmm.0.45635-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 11/18/2022] Open
Abstract
Multi-drug-resistant tuberculosis (MDR-TB) is a major public-health problem, because treatment is complicated and patients remain infectious for months or years, despite receiving the best available therapy. To gain better understanding of MDR-TB, a retrospective study was initiated to determine the level of drug resistance among patients in a chest-disease institute in India. Two hundred and sixty-three isolates from treatment-failure pulmonary tuberculosis patients (20-70 years) were studied. Drug-sensitivity testing was performed by the modified-proportion method. First- and second-line drugs, along with two quinolone drugs (ofloxacin and ciprofloxacin), were tested. Patients included in this study did not improve with therapy; however, 151 isolates (57.5 %) were susceptible to all four first-line antituberculosis drugs. This study reports low resistance to fluoroquinolones among the strains present in these patients.
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Affiliation(s)
- T Dam
- Department of Microbiology, VP Chest Institute, University of Delhi, Delhi 110 007, India
| | - M Isa
- Department of Microbiology, VP Chest Institute, University of Delhi, Delhi 110 007, India
| | - M Bose
- Department of Microbiology, VP Chest Institute, University of Delhi, Delhi 110 007, India
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Dam T, Bose M, Isa M, Virdi JS. Isolation of plasmids from Mycobacterium avium-intracellulare complex (MAC) strains from India. J Med Microbiol 2000; 49:392-3. [PMID: 10755638 DOI: 10.1099/0022-1317-49-4-392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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23
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Ucar H, Van derpoorten K, Cacciaguerra S, Spampinato S, Stables JP, Depovere P, Isa M, Masereel B, Delarge J, Poupaert JH. Synthesis and anticonvulsant activity of 2(3H)-benzoxazolone and 2(3H)-benzothiazolone derivatives. J Med Chem 1998; 41:1138-45. [PMID: 9544213 DOI: 10.1021/jm970682+] [Citation(s) in RCA: 102] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A series of 2(3H)-benzoxazolone and 2(3H)-benzothiazolone derivatives were synthesized and evaluated for anticonvulsant activity. The compounds were assayed, intraperitoneally in mice and per os in rats, against seizures induced by maximal electroshock (MES) and pentylenetetrazole (scMet). Neurologic deficit was evaluated by the rotarod test. The compounds were prepared to determine the relationship between the 2(3H)-benzoxazolone and 2(3H)-benzothiazolone derivatives' structures and anticonvulsant activity. Several of these compounds showed significant anticonvulsant activity. Compounds 43 and 45 were the most active of the series against MES-induced seizures with ED50 values of 8.7 and 7.6 mg/kg, respectively. Compound 45 displayed good protection against MES-induced seizures and low toxicity in rats with an oral ED50 of 18.6 mg/kg and a protective index (PI = TD50/ED50) of < 26.9. In vitro receptor binding studies revealed that compounds 43 and 45 bind to sigma 1 receptors with nanomolar affinities.
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Affiliation(s)
- H Ucar
- Laboratory of Medicinal Chemistry, School of Pharmacy, University of Louvain, Bruxelles, Belgium.
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Gallego S, Recalde A, Gastaldello R, Isa M, Nates S, Medeot S. Kinetics study of human retrovirus antigens expression in T lymphocytic cell lines by indirect immunofluorescence assay. Viral Immunol 1997; 10:149-57. [PMID: 9344337 DOI: 10.1089/vim.1997.10.149] [Citation(s) in RCA: 11] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Indirect immunofluorescence assay (IFA) is a well-accepted assay for the confirmation of human retrovirus infection. Fluctuations in HIV-1 antigen expression in infected E-B2 cells depending on several factors have been reported. Cells kept in log phase expressed the highest levels of viral antigen. Thus, we studied the time kinetics of IFA positivity in MT-2 (HTLV-I), MO-T (HTLV-II), CEM, and H9 (HIV-1) cell lines. Uninfected T cell line, HT, was used as nonspecific control. Reference HTLV-I/II and HIV-1 serum panels from the Centers for Disease Control and Prevention (CDC) were tested by conventional IFA procedure on slides of each cell line made on different days. On the second day after subculture, HTLV-I strongly positive sera reacted on MT-2 and MO-T cells with a bright pericytoplasmic fluorescence pattern. Weakly positive sera showed a faint staining from the fifth day on, when all the sera showed the highest degree of fluorescence. With HIV-1 cell lines, sera predominantly reacted with a diffuse cytoplasmic pattern, although some sera showed a granular and pericytoplasmic capping staining. The highest degree of fluorescence was found at 3-5 days after subculture. We demonstrated that the sensitivity of the IFA for the detection of antibodies against human retroviruses depended on the day when the slides were assayed and on the serum antibody titer. The fifth day was the most appropriate for HTLV-I/II and HIV-1/H9 systems, whereas for HIV-1/CEM, the fourth day was better. Furthermore, the intensity of the immunofluorescence pattern differed with the antibody titers and the level of antigens expressed on the four cell lines studied. The IFA, improved in our laboratory, proved to be very sensitive, specific, and rapid and could be used as a supplementary/confirmatory assay for retrovirus infection.
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Affiliation(s)
- S Gallego
- Institute of Virology Dr. J.M. Vanella, School of Medical Sciences, National University of Córdoba, Argentina
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Ucar H, Cacciaguerra S, Spampinato S, Van derpoorten K, Isa M, Kanyonyo M, Poupaert JH. 2(3H)-benzoxazolone and 2(3H)-benzothiazolone derivatives: novel, potent and selective sigma1 receptor ligands. Eur J Pharmacol 1997; 335:267-73. [PMID: 9369382 DOI: 10.1016/s0014-2999(97)01248-x] [Citation(s) in RCA: 24] [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] [Indexed: 02/05/2023]
Abstract
A series of original 2(3H)-benzoxazolone and 2(3H)-benzothiazolone derivatives were evaluated for their affinity at sigma1 and sigma2 receptor subtypes in competition binding experiments, using [3H](+)-pentazocine or [3H]1,3-di-o-tolyl-guanidine (DTG) in the presence of 100 nM (+)-N-allylnormetazocine (NANM) in guinea-pig brain membranes. Several of these derivatives showed preferential selectivity for sigma1 binding sites. Compound 1 [3-(1-piperidinoethyl)-6-propylbenzothiazolin-2-one] emerged as a potent sigma1 receptor ligand (Ki = 0.6 nM) and displayed a moderate selectivity over the sigma2 receptor subtype (Ki for sigma2/Ki for sigma1 = 29). Compounds 2 [3-(1-piperidinopropyl)-6-propanoylbenzothiazolin-2-one] and 3 [3-(1-piperidinopropyl)-6-propanoylbenzoxazolin-2-one] still showed rather high affinities for sigma1 binding sites with Ki values of 2.3 and 8.5 nM, respectively. On the contrary, they had 87- and 58-fold less affinity at sigma2 receptors, respectively. Unlike their potent affinity for sigma binding sites, these compounds had negligible affinity for mu-, delta- and kappa-opioid receptors, 5-HT2, dopamine D2, and muscarinic M2 receptors. Sigma receptor ligands may affect neuronal transmission and display, in animal models, antipsychotic, cognitive, motor, neuroprotective and anticonvulsant activity. Therefore, on the basis of these findings, these novel sigma receptor ligands were assayed, in mice, in three tests: maximal electroshock, subcutaneous pentylenetetrazol and rotarod neurotoxicity. Compound 1, administered intraperitoneally, was the most effective against maximal electroshock-induced seizures and was devoid of significant neurotoxic effects.
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Affiliation(s)
- H Ucar
- Unité de Chimie Pharmaceutique et de Radiopharmacie, Ecole de Pharmacie, Université catholique de Louvain, Brussels, Belgium.
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Ismail MN, Isa M, Janudin A. Energy requirements of Malaysian soldiers in a base camp. Malays J Nutr 1996; 2:168-174. [PMID: 22692139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The energy intake and expenditure of 20 healthy soldiers (mean age, 25 years, weight 61 kg and height 1.67 m) was assessed. Trained personnel stayed in the camp throughout the 5 weeks study period. Each soldier was subjected to a 7-day comprehensive protocol involving anthropometric, food intake, activity pattern and energy expenditure measurements. The mean change in body weight and fat content was minimal, -0.2kg and -0.25%, respectively. Body fat and BMI ranges from 10.0-21.6% and 19.8-24.9, respectively. The mean energy intake of 2190 ± 197 kcal was well below (81%) the recommended allowance of 2700 kcal for the Malaysian Armed Forces. The ration scale analysed chemically provides 2900 kcal thus suggesting a 24% wastage of daily ration. Contribution of protein (15%), fat (25%) and carbohydrate (60%) to energy intake appears to be in line to healthy dietary guidelines. Energy cost of standardised activities were found to be lower in Malaysian soldiers as compared to British soldiers studied under similar environment in the tropics. The mean total daily energy expenditure (TDEE) for soldiers were 2886 ± 222 kcal with a negative energy balance of about 700 kcal. The results suggested that there is a need to review the current provision with regard to food supply and preparation in army camps, to ensure that the menu provided are appealing as well as nutritious for the soldiers.
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Affiliation(s)
- M N Ismail
- Department of Nutrition and Dietetics, Faculty of Allied Health Sciences, Universiti Kebangsaan Malaysia, 50300 Kuala Lumpur
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27
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Isa M. [Use of human liver biopsy samples as a technique for evaluation of cytochrome P-450]. J Pharm Belg 1996; 51:189-91. [PMID: 8965248] [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: 02/03/2023]
Abstract
Liver cytochromes-P450 are of primary importance in the metabolism of numerous drugs. Their activity is modulated by exogenous factors such as drug treatment. The parameters of human oxidase metabolism were determined "in vitro" in order to evaluate the activity of a specific monooxygenase (benzopyrene hydroxylase). Substances capable of modulating monooxygenase function were identified. This may be useful to predict drug-Cyt-P450 interaction "in vivo". The hydroxylation of benzopyrene in human microsomes prepared from human liver samples (biopsies) was used as a model to study the treatment effect on cytochrome-P450. The kinetic parameters of this reaction are stable and reproducible (Km = 1.37 +/- 0.35 microM, Vmax = 0.49 +/- 0.03 nmole 30 H-BP/min/ nmole CYT-P450). The Michaelis-Menten values are given by mean +/- standard deviation.
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Affiliation(s)
- M Isa
- Lab. de chimie Pharmaceutique, Ecole de Pharmacie, Université Catholique de Louvain, Bruxelles, Belgique
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Isa M, Cumps J, Poupaert JH, Atassi G. Cytochrome-P450 induction and antineoplastic action of fotemustine in mice. J Pharm Belg 1996; 51:192-4. [PMID: 8965249] [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: 02/03/2023]
Affiliation(s)
- M Isa
- Unité de Chimie Pharmaceutique, Ecole de Pharmacie, Université Catholique de Louvain, Brussels, Belgium
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Isa M, Cumps J, Fossoul C, Atassi G. [Conditions for analysis of cytochrome p-450 activity in human liver microsomes]. J Pharm Belg 1992; 47:407-11. [PMID: 1479533] [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: 12/27/2022]
Abstract
Multiples forms of CYT-P450 have been isolated from human liver microsomes. The distribution of CYT-P450 could be correlated with pathologic and influence the individual's response to therapeutic drugs and susceptibility to the toxic and cancerogenic effects of environmental pollutants. The aim of the this work is to determine the amounts of CYT-P450's in small samples from human liver such as biopsies and eventually to correlate them with pathology. For these reasons, tests providing informations about the distribution of CYT-P450 in individual subjects are very important. In this study we have reviewed the method for measuring the activity of CYT-P450 and the dosage of Benzopyrene hydroxylase. We modified some of these methods for the study of CYT-P450 from human liver microsomes.
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Affiliation(s)
- M Isa
- ULB Institut de pharmacie Lab. de Pharmacologie Cellulaire, Buxelles
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Abstract
A procedure for the solubilization and purification of cytochrome-P450 (cyt-P450) from human liver microsomes is described. Successive treatment of microsomes with protease XXVII and 3-(3-cholamidopropyl)dimethylammoniopropanesulphonic acid gave a solubilized cyt-P450 in more than 80% yield and with a three-fold increase in specific activity. With this treatment it was possible to eliminate 80% of cytochrome-b5 and 75% of NADPH cyt-P450 reductase. The solubilized cyt-P450 was filtered on a Sephacryl-200 column and then subjected to high performance liquid chromatography with a Mono-P column (chromatofocussing). The recovery of separated cyt-P450 was about 50% with a specific activity of 11.5 nmol cyt-P450/mg protein. Also with this technique it was possible to determine the isoelectric points of cyt-P450. These results allowed us to confirm the usefulness of our method, for the study the cyt-P450 from surgical biopsies.
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Affiliation(s)
- M Isa
- Laboratoire de Pharmacologie Cellulaire, Université Libre de Bruxelles, Belgium
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Chong T, Apt D, Gloss B, Isa M, Bernard HU. The enhancer of human papillomavirus type 16: binding sites for the ubiquitous transcription factors oct-1, NFA, TEF-2, NF1, and AP-1 participate in epithelial cell-specific transcription. J Virol 1991; 65:5933-43. [PMID: 1656080 PMCID: PMC250257 DOI: 10.1128/jvi.65.11.5933-5943.1991] [Citation(s) in RCA: 118] [Impact Index Per Article: 3.6] [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: 12/28/2022] Open
Abstract
The enhancer of human papillomavirus type 16 (HPV-16) is considered to be specific for epithelial cells, in particular for cervical carcinoma-derived cell lines. We reexamined this hypothesis with the complete enhancer as well as nonoverlapping subclones and found all clones to be active in epithelial cell lines derived from the epidermis and from carcinomas of the cervix, mammary gland, and colon, but inactive in fibroblast, lymphoma, and embryonal carcinoma cells. Although the virus infects only human mucosal epithelia, enhancer activity was independent of the exact type or of the species of origin of the transfected epithelial cell. In spite of epithelial cell specificity, we found that the activity of the HPV-16 enhancer varied strongly from a cytomegalovirus enhancer and the simian virus 40 enhancer in a cell line-dependent manner. This suggests varying quantitative contributions of enhancer elements rather than regulation by an all-or-none switch. Cell type specificity was maintained by a 91-bp subclone of the 400-bp enhancer. Most of the enhancer activity of this fragment was eliminated by alternative mutations in binding sites for the ubiquitous factors AP-1, nuclear factor 1 (NF1), or TEF-2. These three types of factors bind this 91-bp enhancer without cooperation, although activation appears to be synergistic. Outside the 91-bp fragment, a motif typical for papillomavirus enhancers, namely an octamerlike sequence flanked by an NF1-binding site, contributes to enhancer function, as the activity was strongly reduced upon its deletion. In HPV-16, this motif is bound by the oct-1 factor as well as by a probably novel factor, NFA, whereas a related motif of HPV-11 is recognized only by NFA. On examination, none of the five types of transcription factors involved in HPV enhancer activation was restricted to epithelial cells, but NF1, AP-1, and oct-1 were present in higher concentration in HeLa cells than in fibroblasts. Only NF1 showed some qualitative cell type-specific differences. We propose that the epithelial specificity of the HPV-16 enhancer is brought about via binding sites for supposed ubiquitous transcription factors. The mechanism of this activation apparently involves synergism between factors that vary in concentration and may include cell-specific functional differences residing outside the DNA-binding domain of these factors.
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Affiliation(s)
- T Chong
- Institute of Molecular and Cell Biology, National University of Singapore
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Isa M, Cumps J, Fossoul C, Atassi G. [Purification of cytochrome P-450 and NADPH cytochrome p-450 reductase from human liver]. J Pharm Belg 1990; 45:237-44. [PMID: 2127060] [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: 12/30/2022]
Abstract
Two methods for the purification of cytochromes-P450 from microsomes of human liver are described. Method A: Cyt-P450 were solubilized from microsomes using a non ionic detergent, the Lubrol. The Cyt-P450 were purified by affinity, hydrophobicity followed by ion-exchange chromatography on DEAE-5PW column (HPLC) with an overall yield of 18% and a specific activity of 10 nmole/mg of protein. The recovery of NADPH Cyt-P450 reductase by method A (affinity) is about 60% with a specific activity of 16.2 U.I./mg of protein. Method B: Cyt-P450 were solubilized from microsomes using a zwitterionic detergent, the CHAPS. Cyt-P450 were filtered and separated by chromatofocusing on Mono-P column (HPLC). By this method it was possible to increase strongly the specific activity keeping a yield of 50% of Cyt-P450. Also it was possible to apply this method to small samples of human liver like biopsies (0.5 to 2.5 g).
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Affiliation(s)
- M Isa
- Laboratoire de Biochimie Générale, U.L.B. Bruxelles, Belgique
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Isa M, Cumps J, Fossoul C, Atassi G. [Enrichment of cytochrome P-450 in human liver microsomes by the action of proteases]. J Pharm Belg 1989; 44:41-9. [PMID: 2656981] [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: 01/02/2023]
Abstract
Human liver microsomes have been partially enriched in cytochrome P450 using a simple and rapid method. Microsomes were digested with protease XXVII (40 micrograms/nmole cyt. P450), then incubated with CHAPS, a zwitterionic detergent (25 mg/nmole cyt. P450) in combination with 0.07% protamine sulfate and the solubilized cyt. P450 was separated by ultracentrifugation. By this method, about 35% of total microsomal protein was solubilized with more than 80% of cyt. P450. This technique increases the specific activity of cyt. P450 by three fold.
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Isa M. [Problems in nursing management: objection by nursing supervisors to their relocation]. Kango Tenbo 1988; 13:967. [PMID: 3210727] [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]
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Isa M, Cumps J, Fossoul C, Atassi G. [Solubilization of cytochromes P-450 from the human liver by various classes of detergents]. J Pharm Belg 1988; 43:246-57. [PMID: 3236197] [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]
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Kasuga K, Morimoto H, Atarashi H, Isa M. A zirconium(IV) derivative of bis(phthalocyaninato)-neodymium(III). Inorganica Chim Acta 1986. [DOI: 10.1016/s0020-1693(00)81362-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Isa M. [The nursing standard and the present status of hospitals]. Kango Tenbo 1982; 7:879-84. [PMID: 6923968] [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: 01/22/2023]
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Ohta T, Isa M, Suzuki Y, Yamahata N, Suzuki S, Kurechi T. Formation of mutagens from tryptophan by the reaction with nitrite. Biochem Biophys Res Commun 1981; 100:52-7. [PMID: 7020697 DOI: 10.1016/s0006-291x(81)80061-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Gunenkov VV, Isa M, Vertinskaia KK, Siurin VN. [Etiology of diseases of the respiratory organs in calves]. Veterinariia 1972; 4:34-6. [PMID: 4354414] [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: 01/10/2023]
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40
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Isa M, Yoshioka Y. [Psychological considerations in nursing of patients with chronic hepatitis]. Kango Gijutsu 1970; 6:127-32. [PMID: 5200589] [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: 01/14/2023]
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Yoshioka F, Isa M. [Keypoints in nursing during infusion therapy. Nursing experience in a case of drip transfusion]. Kango Gijutsu 1970:75-83. [PMID: 5199397] [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: 01/14/2023]
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Hachisuka S, Isa M. [Considerations in the night round on the ward - considerations for the patients' sleep]. Kango Gijutsu 1969; 7:107-11. [PMID: 5195368] [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: 01/14/2023]
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Isa M, Izawa M. [Sleeplessness in acute hepatitis and its nursing care]. Kango Gijutsu 1969; 7:42-7. [PMID: 5195374] [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: 01/14/2023]
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Isa M. [The organization of nursing services of a ward with critically ill patients]. Kango Gijutsu 1966; 12:15-23. [PMID: 5179056] [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: 01/14/2023]
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