1926
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Nosanchuk JS, Chang J, Bennett JM. The analytic basis for the use of platelet estimates from peripheral blood smears. Laboratory and clinical applications. Am J Clin Pathol 1978; 69:383-7. [PMID: 645636 DOI: 10.1093/ajcp/69.4.383] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Estimation of the platelet count from examination of peripheral blood smears is a widely practiced procedure, but statistical validity to judge the accuracy of the technic has been lacking. More than 400 patients' platelet estimates and counts were analyzed to develop a simple working formula to permit a reasonably accurate platelet estimate. Smear-to-smear and technician-to-technician variabilities were defined, and the influences of different microscopes on the platelet estimates were demonstrated. Platelet estimates can be used as a rapid, convenient measurement suitable for providing useful information for clinical judgement of a patient's platelet status providing that the method's limitations are recognized.
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1927
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Johnson JW, Chang J, Narasagoudar RA, O'Keefe TJ. Anodic dissolution of galena concentrate in perchloric acid. J APPL ELECTROCHEM 1978. [DOI: 10.1007/bf00615390] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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1928
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Pigadas A, Chang J, McGowan AJ, Keyloun VE. Squamous cell carcinoma of the renal pelvis presenting with hypercalcemia. J Urol 1978; 119:126-8. [PMID: 621797 DOI: 10.1016/s0022-5347(17)57406-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A case of hypercalcemia associated with documented squamous cell carcinoma of the renal pelvis without bony metastasis is reported. Pseudohyperparathyroidism was suspected strongly because of the radioimmunoassay values of parathormone. This was confirmed by the prompt decrease of serum calcium after removal of the neoplasm. The radiologic findings were non-specific.
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1929
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Chang J, Lewis GP, Piper PJ. The effect of anti-inflammatory drugs on the prostaglandin system in human subcutaneous adipose tissue [proceedings]. Br J Pharmacol 1977; 61:446P-447P. [PMID: 201322 PMCID: PMC1667889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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1930
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1931
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Abstract
Mammography is of real assistance to the surgeon in evaluating breast problems not associated with a breast mass. Use of mammography in the detection of early breast cancer in breast demonstration projects has brought forth the time honored value judgement of benefit vs risk. This report introduces an additional aspect in the consideration of benefit vs risk, the interval cancer. From the demonstration project at KUMC, 326 biopsies were performed and 65 proved to be cancer. However, 24 additional women developed cancer before their next recommended screening date. This reduces the accuracy of mammography and physical examination by trained nurses in screening for breast cancer to 73%.
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1932
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Chang S, Clements S, Chang J. Aortic stenosis: echocardiographic cusp separation and surgical description of aortic valve in 22 patients. Am J Cardiol 1977; 39:499-504. [PMID: 848433 DOI: 10.1016/s0002-9149(77)80157-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Diminished echocardiographic aortic cusp separation is used as one indicator of the severity of aortic stenosis. To test the validity of this index, 22 patients--12 (55 percent) with isolated aortic valve disease and 10 (45 percent) with aortic stenosis associated with mitral or coronary artery disease--underwent M mode echocardiographic examination before aortic valve replacement. Tracings of diagnostic quality were obtained without difficulty from all 22 patients. Cardiac catheterization was performed in 21 patients. Echocardiographic cusp separation was measured from the apparent mid-systolic orifice and from the outer periphery of the anterior cusp to the outer periphery of the posterior cusp (maximal peripheral cusp separation). Mid-systolic cusp separation varied in nearly every patient, depending on the angle of leaflet presentation to the ultrasonic beam. Maximal peripheral cusp separation measured 16 mm in 18 of 22 patients (82 percent); it indicated neither the severity of the aortic stenosis as documented with cardiac catheterization nor the mobility of the cusps seen at operation. The surgical and echocardiographic descriptions of leaflet and aortic root calcification were similar. In situ examination of aortic cusp separation indicated that diseased aortic valves are not comparable with normal valves or valves with uncomplicated congenital obstruction. The aortic leaflets were curled, fused, calcified and deformed from their natural state of coaptation. Abnormal thickening and limited or eccentric mobility of the aortic leaflets were useful indicators of the cause of valve disease, but cusp deformity secondary to aortic stenosis invalidated mid-systolic cusp separation and maximal peripheral cusp separation as indicators of the severity of aortic stenosis.
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1933
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Taberner DA, Chang J, Otridge BW. Co-existent chronic lymphatic leukaemia with polycythaemia vera. Postgrad Med J 1977; 53:222-3. [PMID: 859791 PMCID: PMC2496494 DOI: 10.1136/pgmj.53.618.222] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A patient presenting with chronic lymphocytic leukaemia and iron deficiency anaemia who, following oral iron therapy, developed the clinical and pathological features of polycythaemia vera is reported. The relationship between these two diseases when co-existing is discussed.
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1934
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Albins MS, Chang J, Tung AS, Maivald P, Pautler S. Anesthesia for the sitting position. Anesth Analg 1977; 56:325-6. [PMID: 557935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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1935
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Chang J, Lewis GP, Piper PJ. Inhibition by glucocorticoids of prostaglandin release from adipose tissue in vitro. Br J Pharmacol 1977; 59:425-32. [PMID: 191127 PMCID: PMC1668015 DOI: 10.1111/j.1476-5381.1977.tb08396.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
1 When rabbit chopped adipose tissue was incubated with a lipolytic agent (adrenocorticotrophic hormone, ACTH1-24, 0.1 microng/ml) in Krebs solution, prostaglandin E2 was formed in the tissue and about the same amount was found in the medium. 2 In the presence of indomethacin (1 microng/ml) the appearance of prostaglandin E2 was almost abolished both in the tissue and in the medium. 3 When the incubation was carried out in the presence of hydrocortisone or betamethasone (1-10 microng)ml) the concentration of prostaglandin E2 leaking or carried into the medium was significantly reduced, whereas that remaining in the tissue was significantly increased. This action of the steroids was not reversed by increasing substrate (arachidonic acid) concentration in the medium. 4 The steroids did not affect lipolysis, nor did they influence prostaglandin metabolism since such activity was not detectable in the adipose tissue. 5 Anti-inflammatory steroids therefore did not reduce prostaglandin formation but increased the tissue/medium ratio, which supports the view that they inhibit the release of prostaglandins after these have been synthesized.
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1936
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1937
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Theodorides VJ, Nawalinski T, Chang J. Efficacy of albendazole against Haemonchus, Nematodirus, Dictyocaulus, and Monieza of sheep. Am J Vet Res 1976; 37:1515-6. [PMID: 136914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Albendazole was highly efficacious in the removal of monospecific and mixed infection of Haemonchus contortus, Nematodirus spathiger, and Dictyocaulus filaria from sheep. A dose level of 5 mg/kg removed nearly all gastrointestinal nematodes, and 10 mg/kg removed all lungworms. Tapeworms of the genus Moniezia were completely removed by a dose level of 10 hg/kg.
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1938
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McClure HM, Chang J, Kaplan W, Brown JM. Pulmonary nocardiosis in an orangutan. J Am Vet Med Assoc 1976; 169:943-5. [PMID: 789315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Pulmonary nocardiosis was diagnosed in an adult male orangutan (Pongo pygmaeus) being maintained in an outdoor facility. Periodically, the orangutan had had clinical signs of an upper respiratory tract infection, as evidenced by slight nasal discharge and cough. At the terminal stage, the orangutan had acute respiratory embarrassment, with epistaxis, and died before diagnosis could be made and treatment initiated. Gross necropsy findings included fibrosis of the pulmonary parenchyma as well as evidence of air sac infection, extensive pneumonia, and extensive chronic pleuritis. Microscopically, some of the lung sections had alveoli filled with polymorphonuclear cells, with other sections being diffusely fibrotic; the areas of fibrosis contained interspersed foci of polymorphonuclear cell infiltration. Many of the latter areas contained organism colonized in the form of granules that resembled those seen in actinomycosis. These organisms were gram-positive and branched, and measured close to 1 mum in diameter. Nocardia asteroides was isolated from the pulmonary tissue.
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1939
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McClure HM, Chang J. Chromobacterium violaceum infection in a nonhuman primate (Macaca assamensis). LABORATORY ANIMAL SCIENCE 1976; 26:807-10. [PMID: 824500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Chromobacteriosis caused by Chromobacterium violaceum was diagnosed as an Assam macaque, Macaca assamensis, that died 4 days after receipt of the Yerkes Primate Center, It was received from a primate facility in Florida where it has been housed with a group of rhesus monkeys for 5 years. The animal died suddenly without showing any signs of clinical illness. Necropsy findings included extensive hepatic necrosis with the formation of multiple large cavitary lesions. Foci of necrosis were also found in the lungs and lymph nodes. Numerous gram-negative bacilli were demonstrable in the lesions and Chromobacterium violaceum was isolated from the blood, liver, lungs, spleen and kidneys.
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1940
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Chang J, Lewis GP, Piper PJ. Proceedings: The effects of anti-inflammatory steroids on levels of prostaglandin in adipose tissue in vitro. Br J Pharmacol 1976; 56:342P-343P. [PMID: 177139 PMCID: PMC1666934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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1941
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Abstract
Albumin molecules appeared to be synthesized in the light hepatocytes of rats by bound polysomers on rough and endoplasmic reticulum and the nuclear envelope. The molecules were discharged directly into the cytosol, then to the external cellular spaces. This conclusion failed to support the current theory from biochemical studies that albumin is synthesized by bound ribosomes, discharged into the cisternae of rough endoplasmic reticulum, and transported to the smooth endoplasmic reticulum and then to the Golgi apparatus. In addition to the liver, positive syntheic activities were observed in the aorta, kidney, and hepatoma cells of rat. Earlier investigators have reported that only liver cells can synthesize albumin.
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1942
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Chang J, McClure HM. Disseminated oesophagostomiasis in the rhesus monkey. J Am Vet Med Assoc 1975; 167:628-30. [PMID: 126218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Disseminated oesophagostomiasis was diagnosed at necropsy of 5 rhesus monkeys (Macaca mulatta). Nodular lesions were in visceral organs as well as in the colon and mesentery. Lesions varied greatly with respect to degree of organ involvement and damage due to parasite invasion. In 2 monkeys, nodular lesions were in the colon, mesentery, liver, kidneys, abdominal wall, urinary bladder, and uterus; in 1 of these 2 monkeys, a nodular lesion inhabited by a parasite was in a lung. The ectopic nodules in the less severely affected monkeys were scattered in the liver, kidneys, and abdominal wall.
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1943
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McClure HM, Chang J. Ectopic pregnancy in a squirrel monkey. J Am Vet Med Assoc 1975; 167:654-5. [PMID: 809396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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1944
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1945
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Kedziora JA, Wolff M, Chang J. Limited form of Wegener's granulomatosis in ulcerative colitis. THE AMERICAN JOURNAL OF ROENTGENOLOGY, RADIUM THERAPY, AND NUCLEAR MEDICINE 1975; 125:127-33. [PMID: 1200204 DOI: 10.2214/ajr.125.1.127] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The limited form of Wegener's granulomatosis is described as a complication in 2 cases of chronic ulcerative colitis. The coexistence of ulcerative colitis and the limited form of Wegener's granulomatosis raises the question of a common etiologic basis, possibly an immunologic defect. Awareness of such an association may help shed further light on the etiology of both disorders.
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1946
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Clemett AR, Chang J. The radiologic diagnosis of spontaneous mesenteric venous thrombosis. Am J Gastroenterol 1975; 63:209-15. [PMID: 1119475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Spontaneous mesenteric venous thrombosis is a distinct clinicopathologic entity that typically presents as abdominal pain of obscure origin. Pathologically, thrombosis of multiple small tributaries of the superior mesenteric vein causes segmental congestion, edema, hemorrhage and ultimately mucosal necrosis. Characteristic radiologic changes were found in 10 of 12 cases.
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1947
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Hawkins RD, Chang J. Behavioral measurement of the neural refractory periods for stimulus-bound eating and self-stimulation in the rat. JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY 1974; 86:942-6. [PMID: 4833598 DOI: 10.1037/h0036394] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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1948
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Chang J. Anaesthesia for cervical osteotomy. CANADIAN ANAESTHETISTS' SOCIETY JOURNAL 1974; 21:83-91. [PMID: 4809381 DOI: 10.1007/bf03004582] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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1949
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Theodorides VJ, Chang J, DiCUOLLO CJ, Grass GM, Parish RC, Scott GC. Oxibendazole, a new broad spectrum anthelmintic effective against gastrointestinal nematodes of domestic animals. THE BRITISH VETERINARY JOURNAL 1973; 129:xcontdvii-scvi. [PMID: 4779247 DOI: 10.1016/s0007-1935(17)36351-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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1950
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Ames ER, Wescott RB, Chang J. Strongyloides ransomi infection in baby pigs in Missouri. J Am Vet Med Assoc 1973; 163:161-2. [PMID: 4717121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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