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Pettersson H, Ackerman N, Kaude J, Googe RE, Mancuso AA, Scott KN, Hackett RH, Hager DA, Caballero S. Gadolinium-DTPA Enhancement of Experimental Soft Tissue Carcinoma and Hemorrhage in Magnetic Resonance Imaging. Acta Radiol 2016. [DOI: 10.1177/028418518702800116] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An experimental series in the rabbit was performed to test gadolinium-DTPA (Gd-DTPA) enhancement of VX-2 carcinoma and hemorrhages induced in the soft tissues. The recognition of both malignant and benign lesions was greatly facilitated on T1 weighted images after intravenous administration of 0.3 mmol Gd-DTPA/kg body weight because of reduced T1 relaxation times. Gd-DTPA enhancement reached its maximum after 10–15 minutes and was most apparent in tumor tissue, connective tissue surrounding the tumor and in the area of fresh hemorrhage.
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Ackerman N, Aharmim B, Auger M, Auty DJ, Barbeau PS, Barry K, Bartoszek L, Beauchamp E, Belov V, Benitez-Medina C, Breidenbach M, Burenkov A, Cleveland B, Conley R, Conti E, Cook J, Cook S, Coppens A, Counts I, Craddock W, Daniels T, Danilov MV, Davis CG, Davis J, deVoe R, Djurcic Z, Dobi A, Dolgolenko AG, Dolinski MJ, Donato K, Dunford M, Fairbank W, Farine J, Fierlinger P, Franco D, Freytag D, Giroux G, Gornea R, Graham K, Gratta G, Green MP, Hägemann C, Hall C, Hall K, Haller G, Hargrove C, Herbst R, Herrin S, Hodgson J, Hughes M, Johnson A, Karelin A, Kaufman LJ, Koffas T, Kuchenkov A, Kumar A, Kumar KS, Leonard DS, Leonard F, LePort F, Mackay D, MacLellan R, Marino M, Martin Y, Mong B, Díez MM, Morgan P, Müller AR, Neilson R, Nelson R, Odian A, O'Sullivan K, Ouellet C, Piepke A, Pocar A, Prescott CY, Pushkin K, Rivas A, Rollin E, Rowson PC, Russell JJ, Sabourov A, Sinclair D, Skarpaas K, Slutsky S, Stekhanov V, Strickland V, Swift M, Tosi D, Twelker K, Vogel P, Vuilleumier JL, Vuilleumier JM, Waite A, Waldman S, Walton T, Wamba K, Weber M, Wichoski U, Wodin J, Wright JD, Yang L, Yen YR, Zeldovich OY. Observation of two-neutrino double-beta decay in 136Xe with the EXO-200 detector. Phys Rev Lett 2011; 107:212501. [PMID: 22181874 DOI: 10.1103/physrevlett.107.212501] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2011] [Indexed: 05/31/2023]
Abstract
We report the observation of two-neutrino double-beta decay in (136)Xe with T(1/2) = 2.11 ± 0.04(stat) ± 0.21(syst) × 10(21) yr. This second-order process, predicted by the standard model, has been observed for several nuclei but not for (136)Xe. The observed decay rate provides new input to matrix element calculations and to the search for the more interesting neutrinoless double-beta decay, the most sensitive probe for the existence of Majorana particles and the measurement of the neutrino mass scale.
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Affiliation(s)
- N Ackerman
- SLAC National Accelerator Laboratory, Stanford, California, USA
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Nelson G, Bazalova M, Chang K, Ackerman N, Colomer MV, Graves E. SU-E-T-315: In Silico, in Vitro, and in Vivo Quantification of Tungsten and Iodine in Dose Enhanced RT (DERT). Med Phys 2011. [DOI: 10.1118/1.3612266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ackerman N, Graves E, Bazalova M. SU-E-T-15: GEANT4 Microdosimetry for Simulation of Dose Enhancement in Vivo at Orthovoltage Energy. Med Phys 2011. [DOI: 10.1118/1.3611965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Montero Díez M, Twelker K, Fairbank W, Gratta G, Barbeau PS, Barry K, DeVoe R, Dolinski MJ, Green M, LePort F, Müller AR, Neilson R, O'Sullivan K, Ackerman N, Aharmin B, Auger M, Benitez-Medina C, Breidenbach M, Burenkov A, Cook S, Daniels T, Donato K, Farine J, Giroux G, Gornea R, Graham K, Hagemann C, Hall C, Hall K, Hallman D, Hargrove C, Herrin S, Karelin A, Kaufman LJ, Kuchenkov A, Kumar K, Lacey J, Leonard DS, Mackay D, MacLellan R, Mong B, Niner E, Odian A, Piepke A, Pocar A, Prescott CY, Pushkin K, Rollin E, Rowson PC, Sinclair D, Slutsky S, Stekhanov V, Vuilleumier JL, Wichoski U, Wodin J, Yang L, Yen YR. A simple radionuclide-driven single-ion source. Rev Sci Instrum 2010; 81:113301. [PMID: 21133463 DOI: 10.1063/1.3499505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We describe a source capable of producing single barium ions through nuclear recoils in radioactive decay. The source is fabricated by electroplating (148)Gd onto a silicon α-particle detector and vapor depositing a layer of BaF(2) over it. (144)Sm recoils from the alpha decay of (148)Gd are used to dislodge Ba(+) ions from the BaF(2) layer and emit them in the surrounding environment. The simultaneous detection of an α particle in the substrate detector allows for tagging of the nuclear decay and of the Ba(+) emission. The source is simple, durable, and can be manipulated and used in different environments. We discuss the fabrication process, which can be easily adapted to emit most other chemical species, and the performance of the source.
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Affiliation(s)
- M Montero Díez
- Department of Physics, Stanford University, Stanford, California 94305, USA
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Malik NN, Sheth HG, Ackerman N, Davies N, Mitchell SM. A prospective study of change in visual function in patients treated with pegylated interferon alpha for hepatitis C in the UK. Br J Ophthalmol 2008; 92:256-8. [PMID: 17962387 DOI: 10.1136/bjo.2006.106278] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Hepatitis C virus and interferon treatment have been associated with retinopathy. Baseline and ongoing assessment by ophthalmologists have therefore been advocated in previous studies. Our experience suggests that the incidence is low, with no or negligible impact of pegylated interferon alpha on actual visual function. This study was conducted to determine whether ophthalmic assessment is necessary in such patients. METHODS The study was a prospective case series of 52 patients (104 eyes). Visual acuity, contrast sensitivity, colour vision, visual field by perimetry and fundal assessment were measured at baseline and at 3 and 6 months post commencement of interferon alpha treatment. RESULTS Forty-two men and ten women were followed. No patients reported any subjective visual symptoms. The mean changes in right and left logarithmic minimal angle resolution (LogMAR) visual acuity were negligible between baseline and 6 months (0.05 (SD 0.13) and 0.10 (SD 0.12), respectively). Mean changes in contrast sensitivity and colour vision were also negligible. Of all eyes monitored by serial perimetry for the full follow-up period and deemed to have reliable tests, none developed visual field defects. One patient appeared to develop nasal field defects within 3 months of commencing treatment but failed to attend for repeat testing. No patients developed optic disc changes or permanent fundal changes over the follow-up period. CONCLUSION In contrast to previous studies in America and south-east Asia, our findings based on a UK cohort suggest that routine ophthalmic screening is not essential for patients with hepatitis C treated with pegylated interferon alpha who have no subjective visual complaints.
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Affiliation(s)
- N N Malik
- Department of Ophthalmology, Chelsea & Westminster Hospital, 369 Fulham Road, London SW10 9NH, UK.
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Madewell BR, Ackerman N, Sesline DH. Invasive Carcinoma Radiographically Mimicking Primary Bone Cancer in the Mandibles of Two Cats. ACTA ACUST UNITED AC 2005. [DOI: 10.1111/j.1740-8261.1976.tb00576.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
An 11-week-old rottweiler puppy was presented for evaluation of progressive paraparesis, urinary and faecal incontinence. Radiography and myelography revealed widening of the vertebral canal and remodelling of several lumbar vertebrae associated with an intramedullary spinal mass. Magnetic resonance imaging revealed an extensive, heterogeneous mass involving the lumbosacral spinal cord. Histopathological examination indicated a meningeal sarcoma with very varied cytological architecture.
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Affiliation(s)
- A L Hopkins
- University of Florida, College of Veterinary Medicine, Gainesville 32610, USA
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de Haan J, Ackerman N. What is your diagnosis? Fat opacity within the soft tissues. Bony involvement was not evident. J Am Vet Med Assoc 1993; 203:371-2. [PMID: 8226212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- J de Haan
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610-0126
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Handy LH, Peyton LC, Calderwood-Mays MB, Ackerman N. Focal gingival hyperplasia in a horse. J Am Vet Med Assoc 1993; 202:1287-8. [PMID: 8496089] [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: 01/31/2023]
Abstract
A diagnosis of gingival hyperplasia in a 22-year-old Quarter Horse gelding was confirmed by histologic examination. Clinical signs included difficulty eating hay, and a large, intraoral soft tissue mass measuring 13 x 8 x 4.5 cm. The mass was located in the mucosa on the lingual aspect of the caudal left portion of the mandible, ventral to the base of the tongue, and covered the second and third lower molars, extending rostrally along the buccal mucosa to the premolars. The left maxillary second and third molars were overgrown with sharp edges. Lateral radiography of the mandible revealed absence of the left third molar, with associated bony irregularity and sclerosis. The horse was positioned in right lateral recumbency under general anesthesia, and the entire mass was resected. It was speculated that the lesion developed secondary to chronic irritation from opposing teeth and food-packing after loss of the lower third molar; this would not be an unexpected development in a species with continuously advancing molars.
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Affiliation(s)
- L H Handy
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610-0116
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Abstract
Magnetic resonance imaging was used to diagnose degenerative lumbosacral stenosis in four dogs that had physical and neurologic signs consistent with a cauda equina lesion. Nerve root displacement by protruding disc material and loss of epidural fat were identified. In all dogs, the diagnosis was confirmed by dorsal laminectomy of the lumbosacral area.
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Affiliation(s)
- J J de Haan
- Department of Small Animal Clinical Sciences College of Veterinary Medicine, University of Florida, Gainesville 32610-0126
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Abstract
The performance of four automated biopsy devices (Bard Biopty, Bard Monopty, Microvasive ASAP 18, Medical Device Technologies Ultra-Cut) was compared when they were used to obtain 96 liver and 96 kidney samples from eight dogs under ultrasound guidance. There was no significant difference in the lengths of the samples obtained with the four devices. The Monopty device yielded a significantly greater mean weight of both kidney (30.8%) and liver (31.6%) samples compared with the other devices. There were no significant differences between the four devices relative to cellular and histologic preservation, crush artifact, and number of renal glomeruli or liver lobules and portal triads. Renal subcapsular hematomas were identified in most instances, and there was no difference between the devices in the amount of renal trauma resulting from their use. There was only one instance of severe injury to the liver. The choice of instrument should remain one of personal preference, since all four devices were satisfactory and none produced significantly greater renal or hepatic injury.
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Affiliation(s)
- C R Mladinich
- Department of Radiology, College of Medicine, University of Florida, Gainesville 32610-0374
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Cervantes C, Madison JB, Ackerman N, Reed WO. Surgical treatment of dorsal cortical fractures of the third metacarpal bone in thoroughbred racehorses: 53 cases (1985-1989). J Am Vet Med Assoc 1992; 200:1997-2000. [PMID: 1639714] [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: 12/28/2022]
Abstract
Between January 1985 and May 1989, 53 Thoroughbred horses (mean age 3.2 years) were surgically treated for dorsal cortical fractures of the third metacarpal bone (MC III). All horses were treated with cortical drilling through the fracture line (osteostixis). Diagnosis of the fractures was confirmed by xeroradiography. Lifetime racing records were obtained for all horses. Forty-seven horses returned to racing after surgery (89%). The mean time between surgery and the first race was 6.8 months. Horses had a mean of 10.9 starts before surgery and 16.1 starts after surgery. The mean earnings per start before surgery was $6,459 and after surgery was $5,685. Of the 47 horses that raced after surgery, 70% raced at the same class or improved. Complications related to surgery were seen in 10 horses. Two horses had a second fracture of MC III at the same site, and were again treated by osteostixis, after which both horses returned to competition. Fractured drill bits were left in the MC III of 4 horses. One of these horses had catastrophic failure of MC III. Two horses developed subcutaneous infections and 2 horses had catastrophic failure of MC III in the surgically treated limb. Osteostixis appears to be an effective treatment for returning horses affected with dorsal cortical fractures to racing.
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Affiliation(s)
- C Cervantes
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610
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Thompson JP, Ackerman N, Bellah JR, Beale BS, Ellison GW. 192iridium brachytherapy, using an intracavitary afterload device, for treatment of intranasal neoplasms in dogs. Am J Vet Res 1992; 53:617-22. [PMID: 1586039] [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: 12/27/2022]
Abstract
After surgical removal of a primary intranasal neoplasm, an implant device, designed to deliver 192iridium (192Ir) brachytherapy, was positioned in the nasal cavity of 8 dogs. Ribbons containing 192Ir seeds were placed in the device, using an afterloading technique. Dosimetry, to a dose of 7,000 to 10,000 centiGray (cGy), was calculated to encompass the site previously occupied by the tumor and a 1-cm margin of surrounding normal tissue. The quantity of 192Ir implanted varied between 16.69 and 100.80 mg of radium equivalent. The duration of implantation ranged from 90 to 168 hours. All dogs tolerated the implant well, but had a mucoid nasal discharge after radiotherapy. The implant device allowed rapid application and removal of the radioactive ribbons. Mean (+/- SD) radiation exposure to each radiotherapist during seed loading and unloading was 14.4 (+/- 5.3) and 4.5 (+/- 0.9) mrem, respectively. A uniform dose distribution around the intranasal implant device was achieved; however, dogs that received doses in excess of 9,400 cGy at the dorsolateral surface of the nose and/or hard palate had bone and soft tissue necrosis between 70 and 120 days after treatment. One dog was euthanatized 50 days after treatment because of metastatic disease, and 2 dogs were euthanatized because of local tumor recurrence at 125 and 212 days. Death, considered unrelated to treatment, occurred in 1 dog that was euthanatized 27 days after treatment and in 3 dogs that died 30, 93, and 456 days after treatment. Necropsy was performed on 3 of these dogs and evidence of intranasal neoplasia was not observed. One dog remained disease-free at 587 days after treatment.
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Affiliation(s)
- J P Thompson
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610
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Ackerman N, Spencer CP. What is your diagnosis? Prepubic tendon injury, with avulsion fracture of the left pubis. J Am Vet Med Assoc 1992; 200:721-2. [PMID: 1568919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- N Ackerman
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610-0102
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de Haan JJ, Ellison GW, Ackerman N. What is your diagnosis? Mummified fetus in the middle portion of the abdomen. J Am Vet Med Assoc 1991; 199:1199-200. [PMID: 1752775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- J J de Haan
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610-0126
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Salmeri KR, Bellah JR, Ackerman N, Homer B. Unilateral congenital aneurysm of the jugular, linguofacial, and maxillary veins in a dog. J Am Vet Med Assoc 1991; 198:651-4. [PMID: 2019535] [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: 12/29/2022]
Abstract
A 5-month-old female Gordon Setter was examined because of a soft, fluctuant, subcutaneous swelling in the right submandibular region. Clinical problems were not associated with the mass. Cytologic examination and blood gas analysis of an aspirate from the mass confirmed its contents to be venous blood. Venous angiography delineated a fusiform dilatation of the right jugular, maxillary, and linguofacial veins, with no evidence of obstruction or anomalous venous return to the heart. The dilated segments were surgically excised, and the tissue was submitted for histologic examination. The clinical, radiographic, and histologic features of this lesion supported the diagnosis of congenital venous aneurysm.
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Affiliation(s)
- K R Salmeri
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610
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Neville ME, Pezzella KM, Schmidt K, Galbraith W, Ackerman N. In vivo inhibition of tumor growth of B16 melanoma by recombinant interleukin 1 beta. II. Mechanism of inhibition: the role of polymorphonuclear leukocytes. Cytokine 1990; 2:456-63. [PMID: 1966551 DOI: 10.1016/1043-4666(90)90055-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Recombinant human interleukin 1 beta (IL 1 beta) inhibits growth of B16 melanoma in syngeneic C57BL/6 mice in a dose-dependent manner when given intratumorally, intradermally, or intramuscularly over a period of 5 to 7 days. Inhibition of tumor growth was rapid and measurable within 3 days after the initial injection and occurred regardless of the route of injection. However, only intratumoral (ITU) injections of IL 1 beta resulted in greater than 90% inhibition in tumor growth. This enhanced inhibition of tumor growth was not dependent on T or NK cells since inhibition of tumor growth occurred in nude and Beige mice. Also, a profound lymphopenia occurred in mice receiving IL 1 beta. Inhibition of tumor growth did correlate with an increase in the number of polymorphonuclear leukocytes (PMN's) in the circulation. However, only ITU injections of IL 1 beta increased the number of PMN's within the tumors. IM injections of IL 1 beta, while increasing the number of PMN's in the circulation, did not increase the influx of PMN's into the tumors. Furthermore, the transfer of PMN's directly into B16 tumors caused a 49% reduction in tumor growth without the presence of IL 1 beta. These results suggest that in vivo, PMN's may effectively control the growth of tumors and that IL 1 beta may increase this effectiveness by increasing the number of PMN's in the circulation and by locally stimulating the production of chemotactic factors for PMN's within the tumor.
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Affiliation(s)
- M E Neville
- Dupont, Medical Products Department, Glenolden, PA 19036
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Bloom ND, Norbergs DA, Sherman B, Sadjadi M, Ramaswamy G, Jacobs R, Ackerman N. Augmentation of the effect of doxorubicin with low-dose tumor necrosis factor in experimental liver metastasis. Mol Biother 1990; 2:121-4. [PMID: 2363856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The antitumor activity of recombinant human tumor necrosis factor was studied in vivo as a single agent and in combination with a conventional chemotherapeutic agent. Dosages of tumor necrosis factor of 100 micrograms, 50 micrograms, and 25 micrograms were injected intraportally in Sprague-Dawley rats containing hepatic implants of Walker carcinosarcoma. An effect on the tumor was seen but was associated with a significant acute mortality. Lower dosages of tumor necrosis factor, 10 micrograms, 5 micrograms, and 1 microgram, administered with 10 mg/kg of doxorubicin (Adriamycin) significantly enhanced the antitumor effect of doxorubicin without an acute mortality. This suggests that lower dosages of tumor necrosis factor with conventional chemotherapy may augment the latter's effect without any added toxicity.
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Affiliation(s)
- N D Bloom
- Department of Surgery, Metropolitan Hospital Center, New York, NY 10029
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Kaplow R, Ackerman N, Outlaw E. Co-primary nursing in the intensive care unit. Nurs Manag (Harrow) 1989; 20:41-2, 46. [PMID: 2594296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Caligiuri R, Bellah JR, Collins BR, Ackerman N. Medical and surgical management of esophageal foreign body in a ferret. J Am Vet Med Assoc 1989; 195:969-71. [PMID: 2793582] [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: 01/02/2023]
Abstract
A ferret was examined because of anorexia, repeated episodes of regurgitation, and subsequent dehydration. Radiography had revealed a radiodense midesophageal foreign body. Results of endoscopy of the esophagus, however, could not confirm the diagnosis. Contrast radiography revealed esophageal perforation, with subsequent penetration of the foreign body into the right pleural space, causing pleural effusion. Surgical repair of the esophagus was performed, and a gastrostomy feeding tube was inserted to provide adequate nutrition during esophageal healing. Nine days after surgery, radiography revealed a severe stricture at the esophageal surgical site. Surgery was repeated; the esophagus was transected, the stricture was removed, and esophageal tissues were closed in 2 layers. Systemically administered antibiotics and gastrostomy tube feedings were continued throughout the post-operative healing period. The esophagus healed with a mild stricture that diminished over time in response to corticosteroid administration.
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Affiliation(s)
- R Caligiuri
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610
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Muchowski JM, Galeazzi E, Greenhouse R, Guzmán A, Peréz V, Ackerman N, Ballaron SA, Rovito JR, Tomolonis AJ, Young JM. Synthesis and antiinflammatory and analgesic activity of 5-aroyl-6-(methylthio)-1,2-dihydro-3H-pyrrolo[1,2-a]pyrrole-1-ca rboxyl ic acids and 1-methyl-4-(methylthio)-5-aroylpyrrole-2-acetic acids. J Med Chem 1989; 32:1202-7. [PMID: 2724294 DOI: 10.1021/jm00126a010] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [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: 01/02/2023]
Abstract
5-Aroyl-6-(methylthio)-1,2-dihydro-3H-pyrrolo[1,2-a]pyrrole-1-carb oxylic acids and 1-methyl-4-(methylthio)-5-aroylpyrrole-2-acetic acids were synthesized and assayed as antiinflammatory and analgesic agents. The majority of these compounds exhibit a surprisingly low level of antiinflammatory activity (rat carrageenan paw) but have considerable potency as analgesics (mouse phenylquinone writing). For example, the p-tolyl-substituted bicyclic and monocyclic compounds 44 and 58 are 301 and 66 times more potent than aspirin (mouse writhing) but only 3.4 and 1.5 times more potent than phenylbutazone in the antiinflammatory screen (rat paw).
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Affiliation(s)
- J M Muchowski
- Syntex Research, Institute of Organic Chemistry, Palo Alto, California 94304
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Lombard CW, Ackerman N, Berry CR, King RR, Buergelt CD. Pulmonic stenosis and right-to-left atrial shunt in three dogs. J Am Vet Med Assoc 1989; 194:71-5. [PMID: 2914796] [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: 01/03/2023]
Abstract
Using cardiac catheterization, pulmonic stenosis and right-to-left atrial shunt were diagnosed in 3 young dogs that were evaluated because of weakness, cyanosis, and polycythemia. Injection of contrast material into the caudal vena cava or crossing the atrial septal defect with the catheter tip from the right atrium into the left atrium confirmed the diagnosis. Tetralogy of Fallot, with right-to-left shunt through a ventricular septal defect, is a more common congenital malformation associated with the aforementioned clinical signs. Differentiation between the 2 defects is important, because surgical decompression of the right ventricle will lead to reduction of right atrial pressure and diminishment of the shunt.
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Affiliation(s)
- C W Lombard
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610
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Berry CR, Lombard CW, Hager DA, Ackerman N, King RR. Echocardiographic evaluation of cardiac tamponade in dogs before and after pericardiocentesis: four cases (1984-1986). J Am Vet Med Assoc 1988; 192:1597-603. [PMID: 3410781] [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: 01/05/2023]
Abstract
The echocardiographic (M-mode and 2-dimensional) features (before and after pericardiocentesis) of 4 dogs with pericardial effusion and clinical evidence of cardiac tamponade were reviewed. M-Mode echocardiography revealed pericardial effusion, with exaggerated swinging motion of the heart and abnormal septal motion in all 4 dogs. In each case, 2-dimensional echocardiography demonstrated right ventricular diastolic free-wall collapse. Three dogs had right atrial diastolic collapse as well. Clinical signs improved, and right ventricular and right atrial diastolic collapse subsided after pericardiocentesis. Two-dimensional echocardiographic features of right atrial and ventricular collapse were used as indicators for determining the presence of cardiac tamponade.
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Affiliation(s)
- C R Berry
- Department of Medical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610
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Abstract
Percutaneous nephrostomies (PN) were created with teflon fascial dilators under fluoroscopic guidance, to implant stones bilaterally into the renal pelves of five dogs weighing 7 to 35 kg. Between one and seven stones of 0.25 to 1.00 cm diameter were implanted into each renal pelvis. Two to 4 weeks later, PN tracts were recreated, and the implanted renal stones were successfully removed under fluoroscopic and endoscopic visualization. Results of gross and histopathologic evaluation of the kidneys 2, 7, 14, 30, and 90 days after stone removal showed minimal, localized renal parenchymal trauma. Complications, although infrequent, included proximal ureteral tears and hemorrhage. Difficulty was encountered in maneuvering equipment around large or numerous stones. Canine percutaneous nephrolithotomy was successful despite great variation in kidney size, as well as variations in the number, size, and shape of stones in the upper urinary tract.
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Affiliation(s)
- G S Donner
- Department of Surgical Sciences, College of Veterinary Medicine, University of Florida, Gainesville
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Yancey JM, Ackerman N, Kaude JV, Googe RE, Fitzsimmons JR, Scott KN, Mancuso AA, Hackett RL, Hager DA, Caballero S. Gadolinium-DTPA enhancement of VX-2 carcinoma of the rabbit kidney on T1 weighted magnetic resonance images. Acta Radiol 1987; 28:479-82. [PMID: 2958067] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Experimental renal carcinoma was induced by percutaneous injection of VX-2 carcinoma cells into the left kidney in New Zealand white rabbits. Magnetic resonance imaging (MRI) was performed at 0.15 T before and after intravenous injection of 0.3 mmol gadolinium-DTPA (Gd-DTPA) per kg body weight. Gd-DTPA enhanced the tumors by increasing the signal intensity on T1 weighted images. The enhancement was evident immediately after Gd-DTPA injection, increasing during the observation time of 30 minutes. Histologically the areas of enhancement corresponded well to the viable tumor tissue.
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Affiliation(s)
- J M Yancey
- Department of Radiology, College of Medicine, University of Florida, Gainesville 32610
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Ling GV, Lowenstine LJ, Cullen JM, Ackerman N, Ruby AL. Chronic urinary tract infection in dogs: induction by inoculation with bacteria via percutaneous nephropyelostomy. Am J Vet Res 1987; 48:794-8. [PMID: 3296890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Dogs were inoculated via percutaneous nephropyelostomy with bacteria isolated from canine patients with urinary tract infections (4 dogs were inoculated with Escherichia coli, 2 were inoculated with Proteus mirabilis, and 1 was inoculated with coagulase-positive staphylococci). At approximately monthly intervals after bacterial inoculation, bladder urine specimens were collected via antepubic cystocentesis, and renal pelvic urine specimens were collected via percutaneous nephropyelocentesis. Dogs were euthanatized between 89 and 294 days after bacterial inoculation. Extensive microscopic examination was conducted on the urinary tract of each dog. The dogs did not develop any of the common clinical signs of urinary tract infections (ie, increased frequency of urination, fever, craniodorsal abdominal [renal] pain, or malaise). Inflammation in the lower urinary tract of the dogs was more severe than that in the kidneys. Although pyelitis was present, extension into the outer medulla and renal cortex seemed to be confined to nephropyelostomy tracts. The most severe bladder lesion was found in the dog that developed cystic calculi after inoculation with coagulase-positive staphylococci.
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Ackerman N. Radiographic aspects of heartworm disease. Semin Vet Med Surg Small Anim 1987; 2:15-27. [PMID: 3321291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Yancey JM, Ackerman N, Kaude JV, Googe RE, Fitzsimmons JR, Scott KN, Mancuso AA, Hackett RL, Hager DA, Caballero S. Gadolinium-Dtpa Enhancement of Vx-2 Carcinoma of the Rabbit Kidney on T1 Weighted Magnetic Resonance Images. Acta Radiol 1987. [DOI: 10.3109/02841858709177385] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Pettersson H, Ackerman N, Kaude J, Googe RE, Mancuso AA, Scott KN, Hackett RH, Hager DA, Caballero S. Gadolinium-DTPA Enhancement of Experimental Soft Tissue Carcinoma and Hemorrhage in Magnetic Resonance Imaging. Acta Radiol 1987. [DOI: 10.3109/02841858709177312] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Pettersson H, Ackerman N, Kaude J, Googe RE, Mancuso AA, Scott KN, Hackett RH, Hager DA, Caballero S. Gadolinium-DTPA enhancement of experimental soft tissue carcinoma and hemorrhage in magnetic resonance imaging. Acta Radiol 1987; 28:75-8. [PMID: 2952147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An experimental series in the rabbit was performed to test gadolinium-DTPA (Gd-DTPA) enhancement of VX-2 carcinoma and hemorrhages induced in the soft tissues. The recognition of both malignant and benign lesions was greatly facilitated on T1 weighted images after intravenous administration of 0.3 mmol Gd-DTPA/kg body weight because of reduced T1 relaxation times. Gd-DTPA enhancement reached its maximum after 10-15 minutes and was most apparent in tumor tissue, connective tissue surrounding the tumor and in the area of fresh hemorrhage.
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Jacobson ER, Ellison GW, McMurphy R, Heard DJ, Ackerman N. Ventriculostomy for removal of multiple foreign bodies in an ostrich. J Am Vet Med Assoc 1986; 189:1117-9. [PMID: 3505946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- E R Jacobson
- College of Veterinary Medicine, University of Florida, Gainesville 32610
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Kheifets J, Thieme T, Mirkovich A, Ackerman N. The effects of histamine and serotonin on polymorphonuclear leukocyte accumulation in the rat. Eur J Pharmacol 1986; 128:179-86. [PMID: 3792441 DOI: 10.1016/0014-2999(86)90764-8] [Citation(s) in RCA: 14] [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
Histamine and serotonin were evaluated for their effects on rat polymorphonuclear leukocyte (PMN) accumulation in vivo and PMN migration in vitro. Both of the mediators inhibited the accumulation of PMNs when injected into the pleural cavity in a saline vehicle, and reduced the PMN content of the peripheral blood. Histamine also reduced the cellular influx when administered in combination with an intrapleural injection of carrageenan. Peripheral blood leukocytes removed from rats injected intrapleurally with histamine and carrageenan had a lesser chemotactic responsiveness compared with those removed from rats injected only with carrageenan. The effects of histamine in reducing PMN accumulation was abolished by treatment with cimetidine, an H2 antagonist, but not by treatment with chlorpheniramine, an H1 antagonist. These results suggest that a local release of histamine may play a role in reducing cellular infiltration into an inflammatory site.
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Tilmant LL, Gorman NT, Ackerman N, Mays MB, Parker R. Chemotherapy of synovial cell sarcoma in a dog. J Am Vet Med Assoc 1986; 188:530-2. [PMID: 3007411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A synovial cell sarcoma of the tarsus in a 6-year-old dog was treated with doxorubicin HCl and cyclophosphamide. The tumor regressed after treatment. There was no recurrence 3 years after initiation of treatment. Previously, synovial cell sarcoma has not been reported to be responsive to chemotherapeutic agents, and the treatment of choice has been amputation.
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Palmore WP, Ackerman N. Blood flow in the renal portal circulation of the turkey: effect of epinephrine. Am J Vet Res 1985; 46:1589-92. [PMID: 4026043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Control of blood flow in the renal portal circulation of turkeys given epinephrine was evaluated by determining the distribution of injected radiopaque contrast medium within the portal circulation. Radiopacity in the region of the renal parenchyma and/or the caudal renal portal vein was increased in each of the 6 birds after epinephrine (4.0 micrograms/kg of body weight) was injected into the wing vein. In 1 bird, the contrast medium also was distributed into the mesenteric vein. Thus, epinephrine not only induced flow of blood from the pelvic limb (leg) to the kidneys, but to the abdominal viscera as well. Regulation of the patency of the renal portal valve is thought to be one means by which renal portal blood flow is controlled. However, epinephrine had no consistent effect on the valve. Thus, epinephrine seemed to control renal portal blood flow and, perhaps, blood flow to other abdominal viscera at sites other than the renal portal valve.
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Hamlin DJ, Ackerman N, Kaude JV, Fitzsimmons JR, Gaskin JM. Magnetic resonance imaging of renal abscess in an experimental animal model. Acta Radiol Diagn (Stockh) 1985; 26:315-9. [PMID: 4013821 DOI: 10.1177/028418518502600316] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The value of magnetic resonance imaging (MRI) in the diagnosis of renal abscess was investigated in an experimental animal model. MRI is capable of depicting the location and extent of the inflammatory process using T1 weighted scans because of relatively long T1 relaxation values which were significantly longer than T1 relaxation times of adjacent normal renal parenchyma.
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Abstract
A dog with polyarthritis, angular joint deformities, and a high serum antinucleolar antibody titer was treated over a period of 20 months. During the clinical course, leukopenia, thrombocytopenia, Coombs' positive hemolytic anemia, and a pemphigus-type skin disorder developed, all of which responded to immunosuppressive therapy. It is not known whether the polysystemic disease in this dog represents a pleomorphic manifestation of canine systemic lupus erythematosus or multiple autoimmune disorders occurring in the same animal.
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Abstract
We describe a family with classic features of continuous muscle fiber activity (Isaacs-Mertens syndrome) appearing in an autosomal dominant pattern. Both a mother and her son had muscle stiffness and rigidity in early childhood. Because the mother's condition was not immediately apparent, we recommend a thorough examination of family members.
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Ackerman N, Martinez S, Thieme T, Mirkovich A. Relationship between adherence, chemotaxis and the accumulation of rat polymorphonuclear leukocytes at an inflammatory site. J Pharmacol Exp Ther 1982; 221:701-7. [PMID: 7086682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The effects of a nonsteroidal anti-inflammatory agent, indomethacin, a steroidal anti-inflammatory drug, dexamethasone and an antirheumatic agent, levamisole, on rat polymorphonuclear leukocyte (PMN) adherence and migration were examined. Adherence was evaluated using nylon fiber columns and migration was studied in vitro using Boyden chambers In addition, the effects of these drugs on PMN accumulation in he carrageenan-injected pleural cavity was evaluated. PMNs removed from animals treated with indomethacin, 1 mg/kg p.o., had a significantly reduced adherence, and fewer cells accumulated at an inflammatory site. Cellular migration measured in vitro was unaffected. PMNs removed from animals treated with dexamethasone, 0.1 and 1.0 mg/kg p.o., had a significantly reduced adherence and fewer cells accumulated at an inflammatory site. Cell migration was not consistently affected. After treatment with levamisole, 5 and 25 mg/kg p.o., adherence and chemotaxis were reduced, whereas PMN accumulation was unaffected. These results demonstrate that no simple relationship exists between PMN adherence, chemotaxis and their accumulation at an inflammatory site. Neither a reduction in adherence nor migration, as measured in vitro with a Boyden chamber, was predictive of a change in inflammatory cell migration.
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