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Derks SHAE, Jongen JLM, van der Meer EL, Ho LS, Slagter C, Joosse A, de Jonge MJA, Schouten JW, Oomen-de Hoop E, van den Bent MJ, van der Veldt AAM. Impact of Novel Treatments in Patients with Melanoma Brain Metastasis: Real-World Data. Cancers (Basel) 2023; 15:cancers15051461. [PMID: 36900253 PMCID: PMC10000692 DOI: 10.3390/cancers15051461] [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: 02/01/2023] [Revised: 02/20/2023] [Accepted: 02/22/2023] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND Melanoma brain metastasis (MBM) is associated with poor outcome, but targeted therapies (TTs) and immune checkpoint inhibitors (ICIs) have revolutionized treatment over the past decade. We assessed the impact of these treatments in a real-world setting. METHODS A single-center cohort study was performed at a large, tertiary referral center for melanoma (Erasmus MC, Rotterdam, the Netherlands). Overall survival (OS) was assessed before and after 2015, after which TTs and ICIs were increasingly prescribed. RESULTS There were 430 patients with MBM included; 152 pre-2015 and 278 post-2015. Median OS improved from 4.4 to 6.9 months (HR 0.67, p < 0.001) after 2015. TTs and ICIs prior to MBM diagnosis were associated with poorer median OS as compared to no prior systemic treatment (TTs: 2.0 vs. 10.9 and ICIs: 4.2 vs. 7.9 months, p < 0.001). ICIs directly after MBM diagnosis were associated with improved median OS as compared to no direct ICIs (21.5 vs. 4.2 months, p < 0.001). Stereotactic radiotherapy (SRT; HR 0.49, p = 0.013) and ICIs (HR 0.32, p < 0.001) were independently associated with improved OS. CONCLUSION After 2015, OS significantly improved for patients with MBM, especially with SRT and ICIs. Demonstrating a large survival benefit, ICIs should be considered first after MBM diagnosis, if clinically feasible.
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Affiliation(s)
- Sophie H. A. E. Derks
- Department of Neuro-Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
- Department of Radiology & Nuclear Medicine, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Joost L. M. Jongen
- Department of Neuro-Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
| | - Edgar L. van der Meer
- Department of Neuro-Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
| | - Li Shen Ho
- Department of Neuro-Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
| | - Cleo Slagter
- Department of Radiotherapy, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
| | - Arjen Joosse
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
| | - Maja J. A. de Jonge
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
| | - Joost W. Schouten
- Department of Neurosurgery, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Esther Oomen-de Hoop
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
| | - Martin J. van den Bent
- Department of Neuro-Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
| | - Astrid A. M. van der Veldt
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands
- Department of Radiology & Nuclear Medicine, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands
- Correspondence: ; Tel.: +31-10-704-02-52
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Starmans MPA, Ho LS, Smits F, Beije N, de Kruijff I, de Jong JJ, Somford DM, Boevé ER, te Slaa E, Cauberg ECC, Klaver S, van der Heijden AG, Wijburg CJ, van de Luijtgaarden ACM, van Melick HHE, Cauffman E, de Vries P, Jacobs R, Niessen WJ, Visser JJ, Klein S, Boormans JL, van der Veldt AAM. Optimization of Preoperative Lymph Node Staging in Patients with Muscle-Invasive Bladder Cancer Using Radiomics on Computed Tomography. J Pers Med 2022; 12:jpm12050726. [PMID: 35629148 PMCID: PMC9147130 DOI: 10.3390/jpm12050726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/27/2022] [Accepted: 04/27/2022] [Indexed: 12/10/2022] Open
Abstract
Approximately 25% of the patients with muscle-invasive bladder cancer (MIBC) who are clinically node negative have occult lymph node metastases at radical cystectomy (RC) and pelvic lymph node dissection. The aim of this study was to evaluate preoperative CT-based radiomics to differentiate between pN+ and pN0 disease in patients with clinical stage cT2-T4aN0-N1M0 MIBC. Patients with cT2-T4aN0-N1M0 MIBC, of whom preoperative CT scans and pathology reports were available, were included from the prospective, multicenter CirGuidance trial. After manual segmentation of the lymph nodes, 564 radiomics features were extracted. A combination of different machine-learning methods was used to develop various decision models to differentiate between patients with pN+ and pN0 disease. A total of 209 patients (159 pN0; 50 pN+) were included, with a total of 3153 segmented lymph nodes. None of the individual radiomics features showed significant differences between pN+ and pN0 disease, and none of the radiomics models performed substantially better than random guessing. Hence, CT-based radiomics does not contribute to differentiation between pN+ and pN0 disease in patients with cT2-T4aN0-N1M0 MIBC.
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Affiliation(s)
- Martijn P. A. Starmans
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (L.S.H.); (F.S.); (W.J.N.); (J.J.V.); (S.K.); (A.A.M.v.d.V.)
- Correspondence: ; Tel.: +31-10-704-10-26
| | - Li Shen Ho
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (L.S.H.); (F.S.); (W.J.N.); (J.J.V.); (S.K.); (A.A.M.v.d.V.)
| | - Fokko Smits
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (L.S.H.); (F.S.); (W.J.N.); (J.J.V.); (S.K.); (A.A.M.v.d.V.)
| | - Nick Beije
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands; (N.B.); (I.d.K.)
| | - Inge de Kruijff
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands; (N.B.); (I.d.K.)
| | - Joep J. de Jong
- Department of Urology, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (J.J.d.J.); (J.L.B.)
| | - Diederik M. Somford
- Department of Urology, Canisius-Wilhelmina Hospital, 6532 SZ Nijmegen, The Netherlands;
| | - Egbert R. Boevé
- Department of Urology, Franciscus Gasthuis & Vlietland, 3045 PM Rotterdam, The Netherlands;
| | - Ed te Slaa
- Department of Urology, Isala, 8025 AB Zwolle, The Netherlands; (E.t.S.); (E.C.C.C.)
| | | | - Sjoerd Klaver
- Department of Urology, Maasstad, 3079 DZ Rotterdam, The Netherlands;
| | | | - Carl J. Wijburg
- Department of Urology, Rijnstate, 6815 AD Arnhem, The Netherlands;
| | | | - Harm H. E. van Melick
- Department of Urology, St Antonius Ziekenhuis, Nieuwegein, 3543 AZ Utrecht, The Netherlands;
| | - Ella Cauffman
- Department of Urology, Zuyderland, 6162 BG Sittard, The Netherlands; (E.C.); (P.d.V.); (R.J.)
| | - Peter de Vries
- Department of Urology, Zuyderland, 6162 BG Sittard, The Netherlands; (E.C.); (P.d.V.); (R.J.)
| | - Rens Jacobs
- Department of Urology, Zuyderland, 6162 BG Sittard, The Netherlands; (E.C.); (P.d.V.); (R.J.)
| | - Wiro J. Niessen
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (L.S.H.); (F.S.); (W.J.N.); (J.J.V.); (S.K.); (A.A.M.v.d.V.)
| | - Jacob J. Visser
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (L.S.H.); (F.S.); (W.J.N.); (J.J.V.); (S.K.); (A.A.M.v.d.V.)
| | - Stefan Klein
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (L.S.H.); (F.S.); (W.J.N.); (J.J.V.); (S.K.); (A.A.M.v.d.V.)
| | - Joost L. Boormans
- Department of Urology, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (J.J.d.J.); (J.L.B.)
| | - Astrid A. M. van der Veldt
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (L.S.H.); (F.S.); (W.J.N.); (J.J.V.); (S.K.); (A.A.M.v.d.V.)
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015 GD Rotterdam, The Netherlands; (N.B.); (I.d.K.)
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Rosecrans AM, Gittelsohn J, Ho LS, Harris SB, Naqshbandi M, Sharma S. Process evaluation of a multi-institutional community-based program for diabetes prevention among First Nations. Health Educ Res 2008; 23:272-86. [PMID: 17639123 DOI: 10.1093/her/cym031] [Citation(s) in RCA: 57] [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] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Epidemic rates of diabetes among Native North Americans demand novel solutions. Zhiiwaapenewin Akino'maagewin: Teaching to Prevent Diabetes was a community-based diabetes prevention program based in schools, food stores and health offices in seven First Nations in northwestern Ontario, Canada. Program interventions in these three institutions included implementation of Grades 3 and 4 healthy lifestyles curricula; stocking and labeling of healthier foods and healthy recipes cooking demonstrations and taste tests; and mass media efforts and community events held by health agencies. Qualitative and quantitative process data collected through surveys, logs and interviews assessed fidelity, dose, reach and context of the intervention to evaluate implementation and explain impact findings. School curricula implementation had moderate fidelity with 63% delivered as planned. Store activities had moderate fidelity: availability of all promoted foods was 70%, and appropriate shelf labels were posted 60% of the time. Cooking demonstrations were performed with 71% fidelity and high dose. A total of 156 posters were placed in community locations; radio, cable TV and newsletters were utilized. Interviews revealed that the program was culturally acceptable and relevant, and suggestions for improvement were made. These findings will be used to plan an expanded trial in several Native North American communities.
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Affiliation(s)
- A M Rosecrans
- Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD 21205, USA.
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Abstract
Type 2 diabetes mellitus is a major cause of morbidity and mortality among First Nations in Canada. We used multiple research methods to develop an integrated multi-institutional diabetes prevention program based on the successful Sandy Lake Health and Diabetes Project and Apache Healthy Stores programs. In-depth interviews, a structured survey, demonstration and feedback sessions, group activities, and meetings with key stakeholders were used to generate knowledge about the needs and resources for each community, and to obtain feedback on SLHDP interventions. First Nations communities were eager to address the increasing epidemic of diabetes. Educating children through a school prevention program was the most popular proposed intervention. Remote communities had poorer access to healthy foods and more on-reserve media and services than the smaller semi-remote reserves. While the reserves shared similar risk factors for diabetes, variations in health beliefs and attitudes and environmental conditions required tailoring of programs to each reserve. In addition, it was necessary to balance community input with proven health promotion strategies. This study demonstrates the importance of formative research in developing integrated health promotion programs for multiple communities based on previously evaluated studies.
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Affiliation(s)
- L S Ho
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, Baltimore, MD 21205, USA.
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Jiang JL, Chan HC, Zhou Q, Yu MK, Yao XY, Lam SY, Zhu H, Ho LS, Leung KM, Chen ZN. HAb18G/CD147-mediated calcium mobilization and hepatoma metastasis require both C-terminal and N-terminal domains. Cell Mol Life Sci 2004; 61:2083-91. [PMID: 15316657 DOI: 10.1007/s00018-004-4146-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
HAb18G/CD147 is a heavily glycosylated protein containing two immunoglobulin superfamily domains. Our previous studies have indicated that overexpression of HAb18G/CD147 enhances metastatic potentials in human hepatoma cells by disrupting the regulation of store-operated Ca2+ entry by nitric oxide (NO)/cGMP. In the present study, we investigated the structure-function of HAb18G/CD147 by transfecting truncated HAb18G/CD147 fragments into human 7721 hepatoma cells. The inhibitory effect of HAb18G/CD147 on 8-bromo-cGMP-regulated thapsigargin-induced Ca2+ entry was reversed by the expression of either C or N terminus truncated HAb18G/CD147 in T7721deltaC and T7721deltaN cells, respectively. The potential effect of HAb18G/CD147 on metastatic potentials, both adhesion and invasion capacities, of hepatoma cells was abolished in T7721deltaC cells, but not affected in T7721deltaN cells. Release and activation of matrix metalloproteinases (MMPs), MMP-2 and MMP-9, were found to be enhanced by the expression of HAb18G/CD147, and this effect was abolished by both truncations. Thapsigargin significantly enhanced release and activation of MMPs (MMP-2 and MMP-9) in non-transfected 7721 cells, and this effect was negatively regulated by SNAP. However, no effects of thapsigargin or SNAP were observed in T7721 cells, and expression of HAb18G/CD147 enhanced secretion and activation of MMPs at a stable and high level. Taken together, these results suggest that both ectodomain and intracellular domains of HAb18G/CD147 are required to mediate the effect of HAb18G/CD147 on the secretion and activation of MMPs and metastasis-related processes in human hepatoma cells by disrupting the regulation of NO/cGMP-sensitive intracellular Ca2+ mobilization although each domain may play different roles.
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Affiliation(s)
- J L Jiang
- Cell Engineering Research Center, Fourth Military Medical University, 710032, Xi'an, China
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Chan KM, Lau CW, Lai KKT, Auyeung MC, Ho LS, Luk HT, Lo KH. Preliminary results of using a commercial fibrin sealant in the treatment of fistula-in-ano. J R Coll Surg Edinb 2002; 47:407-10. [PMID: 11878300] [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: 02/24/2023]
Abstract
A prospective non-randomised study fibrin sealant injection to manage patients with fistula-in-ano, with magnetic resonance imaging (MRI) monitoring, was performed during the period 5/6/1999 to 28/2/2000. The aim was to determine whether a fibrin sealant could be used as a treatment modality for anorectal fistula and the usefulness of MRI perineum to monitor the disease activity. Ten patients were included in the study. Mean age was 47 years (range 7 months to 70 years). Male: female ratio was 9:1. Mean follow-up duration was 26.4 weeks. The overall success rate was 60%. The success rate of different fistula types were different (60%, 0%, 100% for intersphincteric, transphincteric, subcutaneous, respectively). Variable decrease in signal on STIR images and contrast enhancement was noted in the patients with successful and failure of fibrin sealant injection. In conclusion, fibrin sealant injection is a useful alternative treatment in the management of fistula-in-ano. MRI is helpful in delineating the anatomy of fistula-in-ano but not a useful tool to follow-up disease activity.
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Affiliation(s)
- K M Chan
- Department of Radiology, Princess Margaret Hospital, Lai Chi Kok, Kowloon, Hong Kong.
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Jiang JL, Zhou Q, Yu MK, Ho LS, Chen ZN, Chan HC. The involvement of HAb18G/CD147 in regulation of store-operated calcium entry and metastasis of human hepatoma cells. J Biol Chem 2001; 276:46870-7. [PMID: 11591720 DOI: 10.1074/jbc.m108291200] [Citation(s) in RCA: 106] [Impact Index Per Article: 4.6] [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: 01/29/2023] Open
Abstract
The present study examined the effect of hepatoma-associated antigen HAb18G (homologous to CD147) expression on the NO/cGMP-regulated Ca(2+) mobilization and metastatic process of human hepatoma cells. HAb18G/CD147 cDNA was transfected into human 7721 hepatoma cells to obtain a cell line stably expressing HAb18G/CD147, T7721, as demonstrated by Northern blot and immunocytochemical studies. 8-Bromo-cGMP (cGMP) inhibited the thapsigargin-induced Ca(2+) entry in a concentration-dependent manner in 7721 cells. The cGMP-induced inhibition was abolished by an inhibitor of protein kinase G, KT5823 (1 microm). However, expression of HAb18G/CD147 in T7721 cells decreased the inhibitory response to cGMP. A similar concentration-dependent inhibitory effect on the Ca(2+) entry was observed in 7721 cells in response to a NO donor, (+/-)-S-nitroso-N-acetylpenicillamine (SNAP). The inhibitory effect of SNAP on the thapsigargin-induced Ca(2+) entry was significantly reduced in HAb18G/CD147-expressing T7721 cells, indicating a role for HAb18G/CD147 in NO/cGMP-regulated Ca(2+) entry. Experiments investigating metastatic potentials demonstrated that HAb18G/CD147-expressing T7721 cells attached to the Matrigel-coated culture plates and invaded through Matrigel-coated permeable filters at the rate significantly greater than that observed in 7721 cells. Both the attachment and invasion rates could be suppressed by SNAP, and the inhibitory effect of SNAP could be reversed by NO inhibitor, N(G)-nitro-l-arginine methyl ester. The sensitivity of the attachment and invasion rates to cGMP was significantly reduced in T7721 cells as compared with 7721 cells when cells were pretreated with thapsigargin. The difference in the sensitivity between the two cells could be abolished by a Ca(2+) channel blocker, Ni(2+) (3 mm). These results suggest that HAb18G/CD147 enhances metastatic potentials in human hepatoma cells by disrupting the regulation of store-operated Ca(2+) entry by NO/cGMP.
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Affiliation(s)
- J L Jiang
- Epithelial Cell Biology Research Center, Department of Physiology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
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Ho LS. Health care funding and delivery in Hong Kong: what should be done? Hong Kong Med J 2001; 7:155-61. [PMID: 11514750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
This paper outlines a taxonomy of alternative health care funding avenues and the implications of these alternatives. The current approach to health care funding in Sweden is highlighted and a similar proposal outlined to meet the Hong Kong situation. The benefits of the proposed combination of tax-funded and capped voluntary payments, supplemented by 'moral hazard neutral' fees are presented, in terms of expenditure containment, universal access to health care, and optimal resource allocation.
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Affiliation(s)
- L S Ho
- Centre for Public Policy Studies, Lingnan University, Tuen Mun, Hong Kong
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Abstract
This paper provides an overview of the medical care system in the People's Republic of China, and assesses the impact of market reforms on the evolution of the medical care system. There is clear indication that China is moving towards a 'prepaid' system closely related to the HMO of the west. Decentralization of the medical care system administration has paved the way for a diversity of local experiments with different ways of reform, but the main direction is towards a integration of decisions over medical services and the insurance function. It is argued that reforms in this direction, while retaining a degree of socialization, will improve the efficiency and equity aspects of the Chinese medical care system.
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Affiliation(s)
- L S Ho
- Department of Economics, Chinese University of Hong Kong, Shatin, Hong Kong
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Abstract
Splanchnic uptake of haloperidol (HAL) and release of reduced haloperidol (RHAL) were studied in vivo in guinea pigs. Anesthetized animals with implanted cannulae in the aorta, the hepatic vein and the inferior vena cava were infused intravenously with HAL at a rate of 9.6 micrograms/min/animal for 90 min. Plasma HAL and RHAL in samples taken from the arterial and hepatic venous cannulae were measured by HPLC with an electrochemical detector. Contamination of the hepatic venous samples by blood from the inferior vena cava was ruled out by the validation method of tritiated water washout [Huang MT, J Appl Physiol 71: 359-364, 1991]. HAL concentrations plateaued at 70-80 ng/mL in the aorta and 5-7 ng/mL in the hepatic vein during the final 30 min of infusion. Splanchnic extraction of HAL was 91%. Hepatic blood flow was estimated to be 1.95 +/- 0.40 (SD) mL/min/g. If assuming that splanchnic uptake of HAL took place in the liver, a rate of uptake of HAL in the liver of 79.2 +/- 18.6 (SD) ng/min/g could be calculated by the Fick principle. The uptake in the whole liver accounted for 14% of the rate of HAL infusion into the animal. Plasma RHAL in the aorta, 6.4 +/- 6.6 (SD) ng/mL at 60 min and 9.4 +/- 4.6 (SD) ng/mL at the end of HAL infusion, was about 10-12-fold less than aortic HAL. The concentrations of RHAL in the hepatic vein were not significantly different from those in the aorta, indicating that splanchnic tissues including the liver are not responsible for plasma RHAL secretion. The highly efficient uptake of HAL as well as the ketone reductases found previously in vitro in liver microsomes of guinea pigs were probably involved only in biliary excretion of HAL.
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Affiliation(s)
- M T Huang
- Department of Biochemistry, Chang Guang Medical College, Taiwan, R.O.C
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Abstract
Mixtures of short-acting and intermediate-acting insulins often represent an effective regimen to achieve near-normal blood glucose values, yet controversy exists concerning the stability and predictability of such mixtures. In a study of diabetic patients, the biologic activity of a specific intermediate-acting insulin (insulatard) and a short-acting insulin (Velosulin) premixed in a 70:30 ratio was reproducible at three intervals and was stable for a period of up to three months. The serum levels of free insulin and the rate of onset and extent of the blood glucose lowering effects were not altered, showed two distinct peaks, and were comparable to those experienced with separate injections of equivalent doses of the intermediate-acting and short-acting insulins.
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Jawadi MH, Ho LS, Dipette D, Ross DL. Regulation of plasma arginine vasopressin in patients with chronic renal failure maintained on hemodialysis. Am J Nephrol 1986; 6:175-81. [PMID: 3740126 DOI: 10.1159/000167108] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Plasma arginine vasopressin (PAVP) was studied in patients before and after hemodialysis. The levels of PAVP were higher before and reverted to normal range after dialysis (5.7 vs. 2.7 pg/ml). Sequential chemical dialysis showed that vasopressin was removed during the chemical dialysis phase. Data obtained during a simulation experiment were also consistent with the view that vasopressin was removed during the chemical dialysis phase.
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Gao YT, Shen PY, Wang BH, Lü SD, Huang GC, Ho LS. Controlled release effect of insecticide microcapsules and their results in common household insect pest control. J Microencapsul 1984; 1:307-15. [PMID: 6336530 DOI: 10.3109/02652048409031543] [Citation(s) in RCA: 12] [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: 01/19/2023]
Abstract
Since 1978 we have prepared microencapsulated insecticides by complex coacervation and interfacial polymerization for household insect pest control, fenthion being the main core element. A series of tests have been conducted against mosquitoes (Culex pipiens quinquefasciatus), cockroaches (Periplaneta americana) and bedbugs (Cimex lectularius), and the results indicate that microencapsulation can prolong persistent effects by 2-12 times, enhance safety and subdue offensive odour. Furthermore, the production cost is comparatively low.
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Affiliation(s)
- Y T Gao
- Military Medical Research Institute of Fuchow Military District, Fujian, People's Republic of China
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