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Data release: targeted systematic literature search for tick and tick-borne pathogen distributions in six countries in sub-Saharan Africa from 1901 to 2020. Parasit Vectors 2024; 17:84. [PMID: 38389097 PMCID: PMC10885379 DOI: 10.1186/s13071-023-06086-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 12/07/2023] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND Surveillance data documenting tick and tick-borne disease (TBD) prevalence is needed to develop risk assessments and implement control strategies. Despite extensive research in Africa, there is no standardized, comprehensive review. METHODS Here we tackle this knowledge gap, by producing a comprehensive review of research articles on ticks and TBD between 1901 and 2020 in Chad, Djibouti, Ethiopia, Kenya, Tanzania, and Uganda. Over 8356 English language articles were recovered. Our search strategy included 19 related MeSH terms. Articles were reviewed, and 331 met inclusion criteria. Articles containing mappable data were compiled into a standardized data schema, georeferenced, and uploaded to VectorMap. RESULTS Tick and pathogen matrixes were created, providing information on vector distributions and tick-pathogen associations within the six selected African countries. CONCLUSIONS These results provide a digital, mappable database of current and historical tick and TBD distributions across six countries in Africa, which can inform specific risk modeling, determine surveillance gaps, and guide future surveillance priorities.
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Community pharmacy-level factors associated with medical and nursing home facility collaboration in Japan. DIE PHARMAZIE 2020; 74:630-638. [PMID: 31685091 DOI: 10.1691/ph.2019.9489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
The aim of this study was to clarify the community pharmacy-level factors related to experiences of and attitudes toward collaboration with medical and nursing home care facilities. We conducted a postal questionnaire survey of all pharmacies in Gifu, Japan, assessing the experiences and attitudes of supervising pharmacists regarding the following activities related to collaboration between medical facilities and nursing home care facilities: regional care meetings/service adjustment meetings, case discussion conferences, joint workshops/continuing education conferences, community service, information sharing through medical cooperation networks, and pharmacists accompanying physicians on home care visits. The factors significantly related to inter-professional collaboration were the family pharmacist guidance fee and the number of patients offered pharmaceutical care through cooperation with other medical facilities. Items on attitudes toward collaborating with other medical facilities showed similar results. Overall, policies that support inter-professional collaboration to create a foundation, establish mechanisms to facilitate collaboration, and identify collaborative activities that can be carried out at each pharmacy should be developed.
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Cationic comb-type copolymer as a nucleic acid chaperone for DNA quadruplex. ACTA ACUST UNITED AC 2009:61-2. [DOI: 10.1093/nass/nrp031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Poly (L-lysine)-graft-dextran acts as a nucleic acid chaperone for tetramolecular quadruplex formation. ACTA ACUST UNITED AC 2008:227-8. [DOI: 10.1093/nass/nrn115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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5
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Novel analysis for single nucleotide polymorphism using cationic comb-type copolymers. ACTA ACUST UNITED AC 2007:339-40. [DOI: 10.1093/nass/nrm170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Finasteride 1 mg has no inhibitory effect on omeprazole metabolism in extensive and poor metabolizers for CYP2C19 in Japanese. Eur J Clin Pharmacol 2006; 62:939-46. [PMID: 16953457 DOI: 10.1007/s00228-006-0189-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2006] [Accepted: 07/24/2006] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To examine the inhibitory effect of finasteride 1 mg on the metabolism of omeprazole in genetically determined extensive (EMs) and poor metabolizers (PMs) for CYP2C19 in young healthy Japanese male subjects. METHODS Twenty-four volunteers participated in this study, among whom 12 were homozygous EMs and 12 were PMs for CYP2C19. A single center, controlled, randomized, open, crossover study with a 5 day washout between the two study periods was performed. Each of the six EMs and PMs received a single oral 20 mg dose of omeprazole on day 1 (treatment I). After a 5 day washout period, these subjects received 1 mg of finasteride once a day for three consecutive days, and a single oral 20 mg dose of omeprazole was co-administered on day 3 (treatment II). The 12 other EMs and PMs received treatments I and II in reverse. Plasma samples were collected for up to a 12 hours postdose of omeprazole, and the pharmacokinetic parameters of omeprazole were determined. RESULTS The geometric mean ratio (GMR) for the AUC((0-12 hr)) of omeprazole when co-administered with finasteride/omeprazole alone is 1.13 (90%CI, 1.03, 1.25) and 0.96 (0.88, 1.05) in EMs and PMs, respectively. Finasteride did not significantly alter C(max), T(max) and t(1/2) in both genotypes. CONCLUSION Finasteride 1 mg, widely used for the treatment of androgenetic alopecia in men, did not meaningfully increase omeprazole exposure (20 mg) in both EMs and PMs for CYP2C19. These results indicate that finasteride does not meaningfully inhibit CYP2C19 activity in vivo at the dose of 1 mg.
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pH-sensing nano-crystals of carbonate apatite: effects on intracellular delivery and release of DNA for efficient expression into mammalian cells. Gene 2006; 376:87-94. [PMID: 16723196 DOI: 10.1016/j.gene.2006.02.028] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2005] [Revised: 01/04/2006] [Accepted: 02/17/2006] [Indexed: 12/17/2022]
Abstract
Two unique and fascinating properties of carbonate apatite which are well-known in hard tissue engineering, have been unveiled, for the first time, for the development of the simplest, but most efficient non-viral gene delivery device - ability of preventing the growth of crystals needed for high frequency DNA transfer across a plasma membrane and a fast dissolution rate for effective release of DNA during endosomal acidification, leading to a remarkably high transgene expression (5 to 100-fold) in mammalian cells compared to the widely used transfecting agents. Moreover, by modulating the crystal dissolution rate of carbonate apatite through incorporation of fluoride or strontium into it, transfection activity could be dramatically controlled, thus shedding light on a new barrier in the non-viral route, which was overlooked so far. Thus we have developed an innovative technology with significant insights, that would come as a promising tool for both basic research laboratories and clinical settings.
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Detection method for architectural distortion based on analysis of structure of mammary gland on mammograms. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.ics.2005.03.324] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Immunolocalization of centriole-associated striated rootlets in human submandibular gland cells with and without solitary cilia. THE HISTOCHEMICAL JOURNAL 2001; 33:613-20. [PMID: 12197669 DOI: 10.1023/a:1016346116017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Using an antibody specific to striated rootlets, we investigated the immuolocalization of striated rootlets in cells constituting human submandibular glands. Striated rootlets were positively stained in all cell types constituting acini, intercalated ducts, striated ducts, and interlobular ducts, but their shapes were different. The mean lengths of striated rootlets were 1.46 +/- 0.49, 3.15 +/- 1.35 and 3.99 +/- 1.02 microm in acinar secretory cells, myoepithelial cells, and columnar cells of the striated duct, respectively. The rootlets were the longest in columnar cells of the striated duct, in which paired centrioles were located in the apical cytoplasm away from nuclei. These findings suggest that striated rootlets play important roles in the positioning of centrioles in the cell. 2-8% of striated rootlets in myoepithelial cells were associated with solitary cilia, but they were not associated with solitary cilia in acinar cells and columnar cells of the striated duct. These observations suggest that striated rootlets may be associated with centrioles under normal physiological conditions, without formation of solitary cilia.
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Localization of gamma-tubulin to the basal foot associated with the basal body extending a cilium. THE HISTOCHEMICAL JOURNAL 2000; 32:669-71. [PMID: 11272806 DOI: 10.1023/a:1004163315822] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The human oviduct epithelium primarily consists of ciliated cells and secretory cells. Solitary cilia usually extend from the apical surface of the secretory cells. We investigated the localization of gamma-tubulin in the ciliary basal apparatus of both cell types by fluorescence immunohistochemistry and immunoelectron microscopy. In addition to basal bodies, gamma-tubulin was identified in the lateral basal foot, especially the basal foot cap. This observation is consistent with previous observations that microtubules radiate from the basal foot and the basal foot serves as the microtubule organizing centre.
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11
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Immunocytochemistry of the striated rootlets associated with solitary cilia in human oviductal secretory cells. Histochem Cell Biol 2000; 114:205-12. [PMID: 11083463 DOI: 10.1007/s004180000184] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The human oviduct epithelium is a simple columnar structure that consists primarily of ciliated and secretory cells. Solitary cilia usually extend from the apical cell surface of secretory cells. By injecting crude preparations of striated rootlets into rats, we successfully obtained six monoclonal antibodies (R38, R67, R95, R149, R155, R213) that commonly labeled ciliary rootlets. Using these antibodies, proteins of 205-215 kDa were identified by immunoblotting. Using a clone, R67, we investigated the morphology of the striated rootlets associated with solitary cilia by immunocytochemistry. It was found that the shapes of the rootlets were not simple but varied considerably. The rootlets had branched, radiated, arched, and looped shapes. This is the first report of the rootlets having a variety of shapes. The 205- to 215-kDa antigens identified by the six different antibodies were mostly localized to dark bands of striations, suggesting that they are constitutive components of dark striations of the rootlet.
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Preparation of dendritic graft copolymer consisting of poly-(L-lysine) and arabinogalactan as a hepatocyte specific DNA carrier. Prep Biochem Biotechnol 1999; 29:353-70. [PMID: 10548252 DOI: 10.1080/10826069908544934] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The dendriTIc graft copolymers (PAX) consisting of a poly(L-lysine) (PLL) main chain and grafts of arabinogalactan (AG) were prepared as a liver cell-specific DNA carrier. The copolymers were successfully prepared by reductive amination reaction between a reductive end of AG and epsilon-amino groups of PLL using NaBH3CN as a catalyst. The fractionation of a low molecular weight fraction (Mn = 25 kDa) from a crude AG (Mn = 33 kDa) was essential for the reaction to proceed. The resulting copolymers were isolated by ultrafiltration from unreacted AG and characterized by 1H NMR and gel permeation chromatography equipped with a multiangle laser light scattering detector (GPC-MALLS). The binding and internalization of DNA to hepatoma cells, HepG2, were considerably enhanced by complexing DNA with PAX copolymers. The interactions between PAX/DNA complexes and HepG2 cells were thoroughly inhibited in the presence of a competitor to asialoglycoprotein receptors (ASGP-R), indicating high specificity of the complex to ASGP-R. Furthermore, the PAX copolymers allowed the expression of the reporter gene. Our results reveal that the PAX copolymers may provide a new research tool for cell-specific gene delivery and eventually enhance gene-therapy technology.
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IRF-1 is an essential mediator in IFN-gamma-induced cell cycle arrest and apoptosis of primary cultured hepatocytes. Biochem Biophys Res Commun 1999; 257:672-7. [PMID: 10208842 DOI: 10.1006/bbrc.1999.0276] [Citation(s) in RCA: 119] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
IFN-gamma induces cell cycle arrest and p53-independent apoptosis in primary cultured hepatocytes. However, it is not yet understood what molecules regulate the mechanism. We report here that interferon regulatory factor 1 (IRF-1) is an essential molecule in these phenomena. Hepatocytes from IRF-1-deficient mice were completely resistant to IFN-gamma in apoptosis indicated by three different hallmarks such as LDH release, DNA fragmentation and the activation of caspase-3 family. Caspase-1 expression was little detected in hepatocytes, and constitutive and IFN-gamma-induced mRNA expression of Fas or caspase-3 did not change in between wild type and IRF-1-deficient hepatocytes. Expression of IFN-gamma-inducible caspase, caspase-11, did not change either. Thus, it is unlikely that these molecules directly regulate the mechanisms. Interestingly, IRF-1-deficient hepatocytes were also resistant to IFN-gamma-induced cell cycle arrest despite IFN-gamma-induced cell cycle arrest and apoptosis are regulated by independent pathways. Results by Northern blot analysis showed that IFN-gamma-induced but not constitutive p53 mRNA expression was regulated by IRF-1. In fact, IFN-gamma did not induce cell cycle arrest in p53-deficient hepatocytes. Taken together, IRF-1 mediates IFN-gamma signaling into primary hepatocytes for cell cycle arrest via p53 expression and for apoptosis.
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Abstract
The mechanism by which IFN-gamma induces cell cycle arrest and cell death in primary cultured hepatocytes was examined. The cell death exhibits apoptotic characters such as the appearance of apoptotic bodies and DNA fragmentation. IFN-gamma induced cell cycle arrest at the initial stage, followed by cell death. A protein synthesis inhibitor, cycloheximide, significantly inhibited cell death, implying that IFN-gamma induces de novo proteins involved in the death of hepatocytes. One of the most important apoptosis-related proteins, p53, was induced by IFN-gamma in hepatocytes in a dose- and time-dependent manner. Northern blot analysis demonstrated that IFN-gamma enhanced p53 mRNA expression as well as p21(WAF1/Cip1/Sdi1) mRNA expression, which is mediated by the increased expression of the p53 protein. Interestingly, IFN-gamma also induced cell death in p53-deficient hepatocytes. The cell death occurred rather earlier in p53-deficient cells than in normal hepatocytes. However, the cell death was not accompanied by apoptotic bodies. Therefore, IFN-gamma-induced hepatocyte cell death is p53-independent, and p53 may contribute to the apoptotic characters. In conclusion, IFN-gamma is supposed to cause cell cycle arrest by inducing p53 and p21(WAF1/Cip1/Sdi1), and it was demonstrated that IFN-gamma induces p53-independent cell death in primary cultured hepatocytes.
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Abstract
Benign cementoblastoma is a rare benign odontogenic tumour of mesenchymal origin. A case of a 24-year-old man with benign cementoblastoma is presented. The lesion manifested as a round, radiopaque mass attached to the root of the left first molar of the mandible. The tooth was extracted and the lesion was removed. A diagnosis of benign cementoblastoma was made microscopically. There has been no evidence of recurrence during the three-year follow-up period. A review of the literature and a discussion of the histologic features of this case are included.
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EFFECT OF NH4-N LEVEL IN THE NUTRIENT SOLUTION ON THE INCIDENCE OF BLOSSOM-END ROT AND GOLD SPECKS ON TOMATO FRUIT GROWN IN ROCKWOOL. ACTA ACUST UNITED AC 1995. [DOI: 10.17660/actahortic.1995.401.46] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Effects of ventilation and pleural effusion on measurements of airway thermal volume and blood flow in dog lungs. J Appl Physiol (1985) 1995; 79:1320-9. [PMID: 8567579 DOI: 10.1152/jappl.1995.79.4.1320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
We studied the effects of ventilation and pleural effusion on measurements of airway thermal volume (ATV) and pulmonary blood flow (PBF) by using the airway gas thermometry method of V. B. Serikov, M. S. Rumm, K. Kambara, M. I. Bootomo, A. R. Osmack, and N. C. Staub (J. Appl. Physiol. 72: 944-953, 1992) in 39 anesthetized dogs with or without lung edema or pleural effusion. To examine the differential effects of increased-pressure and increased-permeability lung edema on accuracy and sensitivity of ATV and PBF, two models of lung edema were induced by intravenous infusion of a Dextran 70 solution and alloxan monohydrate, respectively. Dogs were hyperventilated for 3 min by using a wide range of minute ventilation (VE) to produce two steady-state conditions of airway temperature. Higher levels of VE increased an estimated amount of ATV. The ATV produced by hyperventilation at VE values of 559, 158, and 72 ml.min-1.kg-1 was consistent with the gravimetric total lung mass, the blood-free wet lung weight, and the extravascular lung water volume, respectively. The coefficient of lung thermal conductivity, a practical index of the rate of heat conduction through tissue from lung vessels, was related to the ratio of the decrease in expired air temperature to VE, and estimated PBF was consistent with the thermodilution cardiac output. Pleural effusion had little effect on measurements of ATV and PBF. However, ATV and PBF showed increased variation in dogs with dextran-induced lung edema.
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Abstract
The response of atrial natriuretic peptide (ANP) release to haemodynamic influences after cardioversion of atrial fibrillation has not been fully examined. We measured plasma concentrations of ANP and assessed haemodynamic changes 60-120 min after DC cardioversion in 22 patients with non-valvular chronic atrial fibrillation. Passive leg elevation to enhance volume expansion was performed 60 min after DC cardioversion. Sinus rhythm was restored in 18 of the 22 patients (successful DC cardioversion group). The control group consisted of seven patients with non-valvular chronic atrial fibrillation who did not undergo DC cardioversion (atrial fibrillation control group). In the successful DC cardioversion group, the mean pulmonary artery wedge pressure decreased significantly 15 min after cardioversion (P < 0.05) and then remained unchanged. Plasma concentrations of ANP also decreased significantly 15 min after cardioversion (P < 0.05). Furthermore, there was an additional significant decrease in ANP levels for up to 60 min after cardioversion (P < 0.05 from 15 min). Passive leg elevation for 15 min led to an increase in the mean pulmonary artery wedge pressure (P < 0.01) and right atrial pressure (P < 0.05), but did not result in increased plasma concentrations of ANP (47.1 +/- 27.6 vs 43.9 +/- 34.4 pg.ml-1, mean +/- SD, P = ns). In the atrial fibrillation control group, passive leg elevation increased the mean pulmonary artery wedge pressure (P < 0.01), the mean right atrial pressure (P < 0.05) and plasma concentrations of ANP (139.9 +/- 85.8 vs 168.1 +/- 108.2, P < 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
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An improvement of heater probe tip in bleeding gastric ulcer treatment. Am J Gastroenterol 1994; 89:1603. [PMID: 8079961 DOI: pmid/8079961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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[A case of gastric cancer completely responding to sequential methotrexate and 5-fluorouracil therapy]. Gan To Kagaku Ryoho 1994; 21:2035-8. [PMID: 8085854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A case of an 81-year-old male with Borrmann II type was reported. The lesion was diagnosed histologically as undifferentiated adenocarcinoma. Biochemically modulated chemotherapy preceded by administration of Methotrexate (MTX) and followed by 5-fluorouracil (5-FU) was given to him. The procedure was weekly intermediate-dose therapy consisting of MTX 100 mg (i.v.) followed 3 hours later by 5-FU 600 mg (i.v.) with leucovorin rescue in the following 2 days. After this treatment was repeated 6 times, advanced gastric cancer disappeared on endoscopic and histological findings, so the patient was regarded as showing a complete response. Ths, this biochemically modulated chemotherapy was thought to be in effective method against gastric cancer.
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Abstract
To provide high-quality duplicate chest images for the intensive care units, we have developed a digital duplication system in which film digitization is performed in conjunction with nonlinear density correction, contrast adjustment, and unsharp mask filtering. This system provides consistent image densities over a wide exposure range and enhancement of structures in the mediastinum and upper abdominal areas, improving visibility of catheters and tubes. The image quality is often superior to that of the original radiograph and is more consistent from day to day. Repeat rates for portable chest radiographs have been reduced by more than a factor of two since implementation of digitization in December 1991, and the number of repeat examinations caused by exposure errors have been substantially reduced.
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Digital image subtraction of temporally sequential chest images for detection of interval change. Med Phys 1994; 21:453-61. [PMID: 8208221 DOI: 10.1118/1.597308] [Citation(s) in RCA: 174] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
An automated digital image subtraction technique for temporally sequential chest images has been developed in order to aid radiologists in the detection of interval changes. A number of small regions of interest (ROIs) are selected automatically in the lung areas of two temporally sequential chest images. A local matching, based on a cross-correlation method, is performed on each pair of corresponding ROIs in order to determine shift values for the coordinates of two images. A proper warping of x,y coordinates is obtained by fitting two-dimensional polynomials to the distributions of shift values. One of the images is warped and then subtracted from the other. Forty six pairs of chest images (42 with interval changes and 4 without interval change) were processed using this method. The subtraction images were able to enhance various important interval changes, such as differences in the size of tumor masses, changes in heart size, and changes in pulmonary infiltrates or pleural effusions. Approximately 70% of the pairs showed reasonably good registration.
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[Urease test]. NIHON RINSHO. JAPANESE JOURNAL OF CLINICAL MEDICINE 1993; 51:3192-5. [PMID: 8283631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In order to elucidate bacterial infection, as a rule, isolated and cultured bacteria of a specimen are identified by their morphologies or biochemical characteristics. However, the culture of Helicobacter pylori (H. pylori) is difficult and takes, much time. Therefore, favorable test results are currently obtained by combining the culture method, histopathologic method, urease test and sero-immunologic test. The merits of the urease test are that judgement is available immediately after endoscopy and that the test is inexpensive. The demerits are that the existence of H. pylori is diagnosed only by estimation that endoscopy is indispensable for the test. When compared with the culture method, the urease test has 91.8% sensitivity and 94.7% specificity and when compared with the histopathologic method, it has 94.4% sensitivity 88.4% specificity. In the future, the clinical requirement will increase for quick investigation on the evidence of H. pylori-induced infection. These results show that urease test is useful because it is simple and allows quick judgement.
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Effects of acetylsalicylic acid on pulmonary vascular tone and membrane permeability in blood-perfused dog lung. J Appl Physiol (1985) 1993; 75:2561-9. [PMID: 8125875 DOI: 10.1152/jappl.1993.75.6.2561] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
We studied the effects of acetylsalicylic acid (ASA) on pressor response, microvascular filtration coefficient (Kf), extravascular lung water, and plasma concentrations of cyclooxygenase- and 5-lipoxygenase-derived products in 21 blood-perfused dog lungs with constant flow. The lungs were perfused for 1 h with an intrapulmonary injection of saline as vehicle (n = 5), a low dose of ASA [136 +/- 25 (SD) micrograms/ml perfusate; n = 5], a high dose of ASA (1,006 +/- 278 micrograms/ml perfusate; n = 6), or alloxan (1,000 mg; n = 5). Alloxan significantly increased Kf and extravascular lung water, whereas neither the low nor high dose of ASA increased Kf or extravascular lung water. The ASA-induced increase in vascular resistance did not correlate with the extent of the decrease in perfusate 6-keto-prostaglandin F1 alpha or the ratio of perfusate 6-ketoprostaglandin F1 alpha to thromboxane B2. Moreover, ASA did not enhance the generation of perfusate leukotrienes B4, D4, or E4. We conclude that pulmonary microvascular permeability is unaltered by ASA and that neither the decrease in plasma prostacyclin nor the increase in plasma sulfidopeptide leukotrienes may account for ASA-induced pulmonary vasoconstriction.
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Abstract
RATIONALE AND OBJECTIVES Computer-aided diagnosis (CAD) schemes for chest radiography are being developed with which to alert radiologists to possible lesions, and thus potentially improve diagnostic accuracy. However, CAD schemes have not been tested on a large number of clinical cases. The authors identify design parameters that would be required for development of an intelligent workstation. METHODS Computer-aided diagnosis programs were applied for the automated detection of lung nodules, cardiomegaly, and interstitial infiltrates to 310 consecutive chest radiographs, and were analyzed for potential usefulness and limitations. Computer-aided diagnosis output was evaluated by radiologists and physicists for accuracy and technical problems, respectively. RESULTS Approximately 70% of the results were judged to be potentially acceptable; however, the number of false-positive findings was relatively high. Technical problems included failure to detect subtle abnormalities and the occurrence of false-positive detections caused by normal anatomical structures. CONCLUSION Computer-aided diagnosis has the potential to be a valuable aid to radiologists in clinical practice, if certain technical problems can be overcome and if optimal operating points can be defined for clinical use.
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[Evaluation of the potential benefit of computer-aided diagnosis (CAD) for lung cancer screenings using photofluorography: analysis of an observer study]. NIHON IGAKU HOSHASEN GAKKAI ZASSHI. NIPPON ACTA RADIOLOGICA 1993; 53:1195-207. [PMID: 8255750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
To evaluate the potential benefit of computer-aided diagnosis (CAD) in lung cancer screenings using photofluorographic films, we performed an observer test with 12 radiologists. We used 60 photofluorographic films obtained from a lung cancer screening program in Yamaguchi Prefecture (30 contained cancerous nodules and 30 had no nodules). In these cases, our current automated detection scheme achieved a sensitivity of 80%, but yielded an average of 11 false-positives per image. The observer study consisted of three viewing conditions: 1) only the original image (single reading), 2) the original image and computer output obtained from the current CAD scheme (CAD 1), 3) the original image and computer output obtained from a simulated improved CAD scheme with the same 80% true-positive rate, but with an average of one false-positive per image (CAD 2). Compared with double reading using independent interpretations, which is based on a higher score between two single readings, CAD 2 was more sensitive in subtle cases. The specificity of CAD was superior to that of double reading. Although CAD 1 (Az = 0.805) was inferior to double reading (Az = 0.837) in terms of the ROC curve, CAD 2 (Az = 0.872) significantly improved the ROC curve and also significantly reduced observation time (p < 0.05). If the number of false positives can be reduced, computer-aided diagnosis may play an important role in lung cancer screening programs.
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Clinical experience with an advanced laser digitizer for cost-effective digital radiography. Radiographics 1993; 13:635-45; discussion 645-6. [PMID: 8316670 DOI: 10.1148/radiographics.13.3.8316670] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Film digitization has not been widely pursued in clinical settings mainly because of perceived limitations involving film latitude and image quality. However, a high-quality laser digitizer can be combined with wide-latitude film and specially developed digital processing techniques to achieve image quality comparable or superior to that of storage phosphor computed radiography (SPR) over a wide range of exposure. This film digitization system provides the operational advantages of digital radiography, such as consistent image density, high-quality inexpensive duplicates, and digital storage and retrieval capability. The reliability and monetary costs of the system also compare favorably with those of SPR. In the long term, technologies that employ reusable plates and do not require chemical processing to produce diagnostic images may well replace screen-film systems. Presently, however, film digitization remains a practical and cost-effective approach to digital radiography.
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Abstract
We previously reported that in Micrococcus luteus, a Gram-positive eubacterium with high genomic G + C content, certain codons ending with A did not appear in coding frames, including termination sites, and tRNAs that translate these codons were not detected. These facts suggest that at least some of them are unassigned (nonsense) codons, i.e. not assigned to any amino acid or to any stop signal. We have investigated whether AGA and AUA, universal Arg and Ile codons, respectively, are really unassigned codons by using a cell-free extract prepared from M. luteus and synthetic messenger RNAs. Translation of synthetic mRNA containing in-frame AGA codons does not result in "read-through" to codons beyond the AGA codons, i.e. translation ceases at codon AGA. Essentially the same result was obtained with mRNA containing AUA in-frame. A sucrose-gradient centrifugation profile of the reaction mixture has shown that practically all of the peptides that have been synthesized are attached to 70 S ribosomes. When in-frame AGA or AUA codons are replaced by UGA codons in mRNA, no read-through occurs beyond UGA, just as in the case of AGA or AUA. However, the synthesized peptide is released from the 70 S ribosomes. These data suggest that AGA and AUA are unassigned codons and differ from UGA in that they are not used for termination.
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Predictors of relapse in peptic ulcer. HEPATO-GASTROENTEROLOGY 1992; 39:396-9. [PMID: 1459517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Four hundred and two patients with peptic ulcer were selected for acute therapy with either pirenzepine (100 mg/day) or cimetidine (800 mg/day) using the envelope method. Those who achieved healing within 3 months (251 patients) were randomized in a double-blind fashion to maintenance therapy with either pirenzepine (75 mg/day) or placebo. In a preliminary study of 163 patients in which a multiple regression life-table method was employed, 4 out of 15 possible predictors were found to have a significant influence on relapse. These were site of ulcer lesions, psychological stress, endoscopic findings at the time of healing of the original ulcers, and acute therapy. Stratified analysis of the evolution of relapse by the Cutler-Ederer life-table method indicated that several other factors also influenced relapse in certain patient subgroups. Most relapses (93.8%) occurred at the same site as, or close to the site of, the original ulcers, indicating that ulcer scars also play a role in relapse.
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Abstract
RATIONALE AND OBJECTIVES To reduce the number of false-negative diagnoses by radiologists, the authors are developing a computer-aided diagnosis scheme for detection of lung nodules in digital chest images. In this study, the authors attempted to reduce the number of false-positive diagnoses obtained with a previous computer scheme by incorporating additional knowledge from experienced chest radiologists into the computer scheme. METHODS The authors applied their previous computer scheme, using less-strict criteria, to 60 clinical chest radiographs; this yielded 735 candidate nodules (23 true nodules and 712 false-positive diagnoses). These candidates were analyzed using region-growing, trend-correction, and edge-gradient techniques to determine measures by which to quantify image features of candidate nodules. RESULTS The 712 false-positive diagnoses represented various anatomic structures that were located throughout the chest image. From this analysis, we were able to decrease the number of false-positive errors from an average of 12 to approximately 5 per image without eliminating any true nodules. CONCLUSION Our results show that incorporating knowledge from experienced chest radiologists into the computer algorithm will play an important role in the development of computerized schemes for the detection of pulmonary nodules.
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Novel anticodon composition of transfer RNAs in Micrococcus luteus, a bacterium with a high genomic G + C content. Correlation with codon usage. J Mol Biol 1991; 221:387-401. [PMID: 1717697 DOI: 10.1016/0022-2836(91)80061-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The number and relative amount of isoacceptor tRNAs for each amino acid in Micrococcus luteus, a Gram-positive bacterium with high genomic G + C content, have been determined by sequencing their anticodon loop and its adjacent regions and by selective labelling of tRNAs. Thirty-one tRNA species with 29 different anticodon sequences have been detected. All the tRNAs have G or C at the anticodon first position except for tRNA(ICGArg) and tRNA(NGASer), in response to the abundant usage of NNC and NNG codons. No tRNA with the anticodon UNN capable of translating codon NNA has been detected, in accordance with a very low or zero usage of NNA codons. The relative amount of isoacceptor tRNAs for an amino acid determined by selective labelling strongly correlates with usage of the corresponding codons. On the basis of these and other observations in this and other eubacterial species, we conclude that the relative amount and anticodon composition of isoacceptor tRNA species are flexible, and their changes are mainly adaptive phenomena that have been primarily affected by codon usage, which in turn is affected by directional mutation pressure.
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32
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[An advanced gastric cancer with varied histopathologic features including a choriocarcinoma: report of a case]. GAN NO RINSHO. JAPAN JOURNAL OF CANCER CLINICS 1990; 36:736-42. [PMID: 2161470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A 77-year-old male, complaining of epigastralgia, was admitted to hospital. An upper GI series revealed a hemispheric filling defect at the greater curvature of the lower gastric body and two submucosal tumor-like lesions of the antrum. Closer inspection revealed a tumor measuring 60 x 42 mm, with an irregular ulcer, and two submucosal tumor-like lesions with bridging folds, measuring 42 x 28 mm and 20 x 14 mm, respectively. Histologically, the microscopic features in the ulcerated tumor showed a variety of tumor cells with clear PAS-positive cytoplasms and marked atypical nuclei forming glandular structures that predominated. Additionally, a clear cell carcinoma, a papillary adenocarcinoma, a signet-ring cell carcinoma, and a choriocarcinoma were partially seen. Finally, in the submucosal tumor-like lesions, diffuse small tumor cells with scanty PAS-positive cytoplasms without granular structures were seen.
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Effects of 17 beta-estradiol on the responses to vasoactivators and electrical transmural stimulation in isolated dog arteries. NIHON HOIGAKU ZASSHI = THE JAPANESE JOURNAL OF LEGAL MEDICINE 1989; 43:407-15. [PMID: 2516542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The effects of 17 beta-estradiol, one type of estrogen, on the contractile and relaxant responses associated with the release of TXA2-like and PGI2-like substances activated by vasoactive substances and electrical transmural stimulation in isolated dog arteries were evaluated. The basilar artery and interlober branches of the renal artery were suspended with a tension of 1.5 g, in a tissue organ bath containing 20 ml of Krebs-Henseleit solution, which was maintained at 37 +/- 0.5 degrees C and aerated with a mixture of 95% O2 and 5% CO2, and isotonic changes were recorded. 17 beta-Estradiol increased the contractile response of the basilar artery caused by the release of a TXA2-like substance mediated by muscarinic cholinergic and angiotensin II receptors, and inhibited the relaxant response of the renal artery caused by the release of PGI2-like substance mediated by angiotensin II receptor. It inhibited the relaxant response when PGI2 was exogenously applied to the renal artery. These results indicate that estradiol increases the TXA2/PGI2 ratio. In this study, it was considered that estradiol is involved in the production of TXA2 and PGI2, which can be a cause of vasospasms.
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Abstract
A case of small carcinoma of the rectum with four different histologic types is presented. The carcinoma was a round node (7 X 7 X 2 mm) surrounded by a flat discolored zone (14 X 14 mm) and had four independently different histologic types: well-differentiated adenocarcinoma, adenocarcinoma with microtubular structure, mucinous carcinoma, and signet-ring cell carcinoma. In part of the tumor the direct transition between well-differentiated adenocarcinoma and signet-ring cell carcinoma was seen. The authors believe that the case of rectal carcinoma was a primary form of linitis plastica.
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[A phase I study of VP-16-213 (VP, etoposide) by single and 5-day intravenous administration]. Gan To Kagaku Ryoho 1986; 13:319-29. [PMID: 3947109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A phase I study of VP was undertaken using the methods of a single (40 cases; range of dose levels 30-540 mg/m2) and 5-day (41 cases; range of dose levels 40-140 mg/m2/day) intravenous administration. The dose-limiting toxicity of VP was moderate to severe leukopenia. MTD was estimated to be 540 mg/m2 for a single and 140 mg/m2/day for 5-day administration. The median days to WBC nadir from the start of therapy and to recovery from reaching the nadir were 10 and 10.5 for single, and 15 and 7 for 5-day administration, respectively. Thrombocytopenia was less frequent and less pronounced than leukopenia. Mild gastrointestinal disturbances and alopecia were frequently observed. Transient hepatic dysfunction, fever, headache, fatigue, dyspnea, hypotension, and pain along the vein were also encountered in a small number of patients. There were no cases with renal, neurologic or cardiac toxicity. Objective tumor regression was seen in one case each of IBL(CR), bladder cancer, non-Hodgkin's lymphoma and ATL (PR). The post-infusion plasma decay of VP in 4 cases given 80-120 mg/m2 by a single administration was biphasic with t1/2 alpha ranging from 0.13 to 0.39 h and t1/2 beta ranging from 3.33 to 4.85 h. No accumulation of VP was found in plasma after five repeated daily doses. Doses of 360-480 mg/m2 by single and 80-100 mg/m2/day by 5-day administration repeated every 3 to 4 weeks can therefore be recommended for phase II studies in good-risk patients.
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[Effect of 4-(o-benzylphenoxy)-N-methylbutylamine hydrochloride (bifemelane hydrochloride, MCI-2016) on cerebral glucose metabolism]. Nihon Yakurigaku Zasshi 1985; 86:425-31. [PMID: 4093078 DOI: 10.1254/fpj.86.425] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
To predict the influence of MCI-2016 on cerebral energy metabolism, the activity of MCI-2016 on uptake of 2-deoxy-D-[14C]glucose ([14C]-DG) into the brain under normal or hypoxic conditions, formation of 14CO2 from 14C-glucose in the brain, and local cerebral glucose utilization (LCGU) were examined. Cerebral uptake of [14C]-DG in mice were significantly enhanced by 6 day repeated administration of MCI-2016 (25 mg/kg, i.p.) and Ca-hopantenate (100 mg/kg, i.p.). The two drugs showed a slight enhancing effect on [14C]-DG uptake after single administration. As an index of cerebral glucose metabolism, 14CO2 formation from 14C-glucose was also stimulated by 6 day repeated administration of MCI-2016 (100 mg/kg, p.o., mice and rats) and Ca-hopantenate (250 mg/kg, i.p., rats). MCI-2016 moderately attenuated the decreased [14C]-DG uptake under the hypoxic condition in rats after 6 day repeated administration (100 mg/kg, p.o.). In addition, local cerebral glucose utilization (LCGU) in rats was also significantly potentiated by MCI-2016 (100 mg/kg, p.o., 6 days) in the areas of the visual cortex, thalamus ventral nucleus and uvula. From these results, MCI-2016 may be suggested to have a moderate activating effect on cerebral energy metabolism.
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[Relationship between symptoms of chronic subdural hematoma and hematoma volume or regional cerebral blood flow]. Neurol Med Chir (Tokyo) 1984; 24:869-75. [PMID: 6084194 DOI: 10.2176/nmc.24.869] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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38
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[Fibrinolytic therapy for toxemia of late pregnancy--experimental studies of pregnant rabbits treated with urokinase]. NIHON SANKA FUJINKA GAKKAI ZASSHI 1984; 36:72-80. [PMID: 6699451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The method for dosing with urokinase (UK) during toxemia of pregnancy, now being studied by us with non- and pregnant rabbits has remained unclarified. The kg/body weight doses determined were 2,500, 5,000, 10,000 and 20,000 in each unit, and the following results were obtained from methods A: a rapid injection, and B: a rapid injection of half the volume followed by drip infusion of the remaining half. The following characteristics of both groups tended to resemble each other: (a) The ELT shortening rate was enhanced with A at doses of 2,500 and 5,000 units/kg, and with B at doses of 10,000 and 20,000 units/kg. (b) alpha 2-antipl., and plg., which tended to decrease with A at doses of 2,500 and 5,000 units/kg, decreased with B more than with A when given 20,000 units/kg. (c) An upward peak of serum FDP was seen in A at 5 minutes and in B at 120 minutes after doses of 10,000 and 20,000 units/kg. Changes with platelet count, PT, APTT and Fbg. were not of significance either both group compared in the non-treated rabbits, irrespective of the dose method employed. Thus, the dose amount of UK during pregnancy nearly equivalent to that in non-pregnancy is seen to be required for enhancement of fibrinolytic activity.
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39
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[Fibrinolysis in pregnancy toxemia]. NIHON SANKA FUJINKA GAKKAI ZASSHI 1983; 35:2311-20. [PMID: 6607299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Pathogenesis of toxemia of pregnancy has been studied of late in terms of coagulation and fibrinolysis, and the results show evidence of hypercoagulability but not of fibrinolysis which has remained unclarified. Our study aims to elucidate the fibrinolytic kinetics of toxemia in normal pregnant women divided into mild and severe types and eclampsia, and also to study changes in the coagulation and fibrinolytic system in toxemia given urokinase. In the affected group the following 1)--3) parameters characteristics were more significant than in other groups. 1) Decreased platelet count. 2) Prolonged ELT. 3) Increased AT-III. 4) There was no significant difference between the groups examined in PT, APTT, Fbg., serum FDP, alpha 2-antipl., alpha 1-AT, alpha 2-MG, C1-INA, and plg. 5) Signs in eclampsia, with region slightly distributed, tended to resemble those in the serious group. 6) alpha 2-antipl., and alpha 1-AT in the case given urokinase tended to decrease. 7) There was observed a case of accelerating and lowering fibrinolysis that appeared simultaneously with the following signs: decreased alpha 2-antipl., increased serum FDP, and prolonged ELT; and also the case whose signs widely changed even after a relatively small dose of urokinase. The results obtained suggest the possibility of variable fibrinolytic kinetics.
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Purification of intestinal brush border membrane vesicles by the use of controlled-pore glass-beads column. Life Sci 1979; 24:669-77. [PMID: 440015 DOI: 10.1016/0024-3205(79)90347-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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41
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[Evaluation of the microtiter method in syphilis serodiagnosis: standardization of the test]. RINSHO BYORI. THE JAPANESE JOURNAL OF CLINICAL PATHOLOGY 1974; 22:164. [PMID: 4475771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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42
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[Clinical application of electrophoresis of serum lipoprotein on a cellulose acetate membrane]. RINSHO BYORI. THE JAPANESE JOURNAL OF CLINICAL PATHOLOGY 1970; 18:299-302. [PMID: 5463497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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43
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[Nucleic acid metabolism of leukemic leukocytes. I. Incorporation of 14C-labeled purines into human leukemic leukocytes]. NAIKA HOKAN. JAPANESE ARCHIVES OF INTERNAL MEDICINE 1968; 15:237-43. [PMID: 5751145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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44
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[Nucleic acid metabolism of leukemic leukocytes. 2. The effect of 6-mercaptopurine on nucleic acid metabolism of leukemic leukocytes]. NAIKA HOKAN. JAPANESE ARCHIVES OF INTERNAL MEDICINE 1968; 15:245-53. [PMID: 5751146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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45
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[Serum gel reaction as the screening test of paraproteinemia)]. RINSHO BYORI. THE JAPANESE JOURNAL OF CLINICAL PATHOLOGY 1966; 14:765-8. [PMID: 6009732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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46
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[Internal medicine and abdominal surgery, with reference to ulcerative cancer and polypoid cancer of the stomach]. SAISHIN IGAKU. MODERN MEDICINE 1966; 21:1484-95. [PMID: 5967538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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