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Carr DJJ, Austin BA, Halford WP, Stuart PM. Delivery of Interferon-gamma by an adenovirus vector blocks herpes simplex virus Type 1 reactivation in vitro and in vivo independent of RNase L and double-stranded RNA-dependent protein kinase pathways. J Neuroimmunol 2008; 206:39-43. [PMID: 19042034 DOI: 10.1016/j.jneuroim.2008.10.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Revised: 10/20/2008] [Accepted: 10/20/2008] [Indexed: 10/21/2022]
Abstract
HSV-1 is a significant human pathogen that can result in the loss of sight as a result of episodic reactivation of latent virus from sensory ganglion neurons. In this study the potential efficacy of anti-viral cytokine expression in preventing latent virus reactivation was investigated. Both type I (IFN-beta) and type II (IFN-gamma) IFN transgene expression following transduction of trigeminal ganglion explant cultures significantly reduced the incident of HSV-1 reactivation that in the case of IFN-beta was dependent on the presence of double stranded RNA-dependent protein kinase and RNase L. In vivo, expression of the IFN-gamma but not IFN-beta transgene significantly delayed and reduced the frequency of reactivation of latent mice exposed to UV light without discernable inflammation. This result is the first report that demonstrates the ability to block reactivation using an ectopic cytokine expression system and warrants further exploration as a means to prevent HSV-1 reactivation.
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Affiliation(s)
- Daniel J J Carr
- Department of Ophthalmology, The University of Oklahoma Health Sciences Center, 608 Stanton L. Young Blvd., Oklahoma City, OK 73104, USA.
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2
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Austin BA, Coulon C, Liu CY, Kao WWY, Rada JA. Altered collagen fibril formation in the sclera of lumican-deficient mice. Invest Ophthalmol Vis Sci 2002; 43:1695-701. [PMID: 12036967] [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: 02/25/2023] Open
Abstract
PURPOSE To better understand the role of lumican (corneal keratan sulfate proteoglycan) in the scleral extracellular matrix, collagen fibril size, shape, and organization were evaluated in the sclera of wild-type mice and in mice homozygous or heterozygous for a null mutation in the lumican gene. METHODS. Anterior and posterior sclera from 6-month-old wild-type (lum+/lum+) and lumican-deficient mice (lum+/lum- and lum-/lum-) were analyzed by transmission electron microscopy. In addition, lumican was characterized in the sclera of wild-type and lumican-deficient mice by Western blot analyses. RESULTS Lumican was present in the mouse sclera as an approximately 48-kDa core protein containing short glycosaminoglycan side chains consisting of moderate- to low-sulfated keratan sulfate. The wild-type mouse sclera consisted of irregularly arranged lamellae of collagen fibrils with an average diameter of 47.37 +/- 0.648 nm in the anterior sclera and 54.68 +/- 0.342 nm the posterior sclera. Collagen fibrils in the sclera of lumican mutant mice (lum+/lum- and lum-/lum-) were significantly larger in diameter in anterior (72.61 +/- 0.445 and 84.47 +/- 0.394 nm, respectively) and posterior (75.92 +/- 0.361 and 80.90 +/- 0.490 nm, respectively) scleral regions compared with wild-type mice (P < 0.001). CONCLUSIONS The results of the present study indicate that null mutations in one or both alleles of the lumican gene result in significant defects in scleral collagen fibril formation that could lead to alterations in ocular shape and size and severely affect vision.
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Affiliation(s)
- Bobbie A Austin
- Department of Anatomy & Cell Biology, School of Medicine & Health Sciences University of North Dakota, Grand Forks, North Dakota 58202-9037, USA
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3
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Abstract
The forces exerted at laryngoscopy with the McCoy and Macintosh blades have been compared in 40 patients. The variables measured were the duration of laryngoscopy, the three maximally-applied forces and the mean force. The mean (SD) forces recorded were 18.9 (7.82) and 10.1 (5.33) N, respectively, with the Macintosh and the McCoy blades (p < 0.001) with a similar duration of laryngoscopy. There was a significant positive correlation between the mean force and patients' weight, height and body mass index for the Macintosh blade but only for weight and height for the McCoy blade. It is concluded that the use of the McCoy blade results in significantly less force being applied during laryngoscopy. This may be the reason for the reduction in the stress response reported previously with the use of the McCoy blade.
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Affiliation(s)
- E P McCoy
- Department of Anaesthetics, Queen's University of Belfast
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4
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Rao BN, Hayes FA, Thompson EI, Kumar AP, Fleming ID, Green AA, Austin BA, Pate JW, Hustu HO. Chest wall resection for Ewing's sarcoma of the rib: an unnecessary procedure. 1988. Updated in 1995. Ann Thorac Surg 1995; 60:1454-5. [PMID: 8526658 DOI: 10.1016/0003-4975(95)00474-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Approximately 10% of all cases of Ewing's sarcoma arise from a rib. Conventional management has included chest wall resection (3 or more ribs) and radiation therapy. These forms of therapy have led to complications such as scoliosis and local deformity. The addition of radiation therapy can result in damage to the lung and adjacent viscera and also potentiate pulmonary restrictive disease. Between 1971 and 1978, 9 patients were treated with surgery, radiation therapy, and combination chemotherapy (three- or four-drug regimen). Only 2 patients (22%) survive. Since 1979, 14 patients were entered into a new protocol consisting of sequential induction chemotherapy, followed by delayed surgical resection whenever feasible. Three patients had complete resection of their primary lesion at onset. Initially, 7 patients had either biopsy (N = 4) or incomplete chest wall resection N = 3). All 4 patients with biopsy only at diagnosis had excellent responses to induction chemotherapy, allowing delayed resection of the involved rib without chest wall resection. Overall, 12 of 14 patients (86%) treated since 1979 survive, with only 2 receiving radiation therapy for residual disease in the primary rib site.
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Affiliation(s)
- B N Rao
- Department of Surgery, St. Jude Children's Research Hospital, Memphis, Tennessee 38105-2794, USA
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5
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Abstract
In characterising the forces exerted during laryngoscopy it is accepted that the significant force component is that which is parallel to the axis of the laryngoscope handle. This paper describes a new method of evaluating the forces exerted at laryngoscopy. A laryngoscope handle has been redesigned, incorporating a force-displacement transducer on the handle at the end opposite to where the blade is attached. The device is designed specifically to sense the axial component of force. The blade attachment block has been detached from the sleeve and connected to a steel shaft which forms the new battery compartment. This allows the axial force exerted at the blade during laryngoscopy to be transmitted along this shaft to the sensing transducer. Linear ball bearings have been introduced between the new shaft and the handle sleeve (outer casing). The rolling friction has been reduced to less than 0.1% by diamond-lapping the precision ground surface-hardened rod to produce a mirror finish. Thus, the force transmitted to the transducer is essentially constant regardless of where the load is applied along the blade. The output from the system is directly downloaded to a laptop computer and the data analysed almost instantaneously to determine the duration of laryngoscopy, the peak forces applied, the mean force with its standard deviation and graphic display of the data. Provision has been made for data entry checks, recording patient details and study data, and creating a data base for the storage and retrieval of the study details.
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Affiliation(s)
- E P McCoy
- Department of Anaesthetics, Queen's University of Belfast, Northern Ireland
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6
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Abstract
Even though epidural analgesia is effective and has advantages over conventional postoperative analgesia, it is also labor intensive, requiring 24-hour supervision by an anesthesiologist. In an effort to decrease the manpower requirements, some hospitals allow the nursing staff to administer epidural narcotics to adult patients. In children, however, this practice has been limited. We retrospectively reviewed our experience over 12 months with this procedure. Epidural catheters (caudal, lumbar, or thoracic) were placed in 43 pediatric patients for acute and chronic pain management. All patients received a continuous epidural infusion of bupivacaine hydrochloride with fentanyl citrate. Eleven (26%) of the 43 patients required supplemental analgesia and were given 45 doses of epidural fentanyl. Adequate analgesia was achieved in all patients. No intravascular or intrathecal injections were noted, nor did any inadvertent epidural injections of medications occur. No patient had respiratory depression (respiratory rate less than 10% for age). We believe epidural administration of fentanyl by a carefully educated nursing staff is safe and effective in children.
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Affiliation(s)
- J D Tobias
- Department of Pediatric Anesthesiology, St. Jude Children's Research Hospital, Memphis, TN
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Hinds PS, Wentz T, Hughes W, Pearson T, Sims A, Mason B, Pratt M, Austin BA. An investigation of the safety of the blood reinfusion step used with tunneled venous access devices in children with cancer. J Pediatr Oncol Nurs 1991; 8:159-64. [PMID: 1930808 DOI: 10.1177/104345429100800403] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Infection has been identified as the most serious potential complication of the indwelling catheter. As a result, the primary nursing goal using the catheters is to prevent infection. Nurses must frequently manipulate the catheters when securing blood specimens and are concerned that this manipulation may serve as a source of infection for the immunocompromised pediatric oncology patient. One particular step in catheter manipulation during blood sampling is blood reinfusion, ie, residual blood in the catheter is withdrawn and set aside while a second sample is collected for laboratory analysis but is subsequently returned to the patient through the catheter. The purpose of this study was to examine this nursing procedure for its potential of contaminating the blood sample that was to be reinfused, or for the potential of reinfusing a sample that contained preexisting pathogens independent of the procedure itself. An experimental design was used with 21 patients randomly assigned to an experimental group (unclean procedure to exaggerate the potential to incur pathogens during the process), and 21 randomly assigned to a control group (usual clean procedure followed with the reinfusion sample). The usual blood sampling procedure was altered for all participants as the typical amount of blood that normally constitutes the reinsertion sample was not reinserted, but was instead used to complete certain microbial analyses. Of the 42 participants, 17 were male and 25 were female; 35 were white and seven were black; 22 were diagnosed with leukemias and 20 with solid tumors. The age range for participants was 2 to 20 years (mean = 9.4 years, SD = 4.8).(ABSTRACT TRUNCATED AT 250 WORDS)
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Austin BA. The art of motivation. Todays OR Nurse 1990; 12:3. [PMID: 2256133] [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: 12/31/2022]
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Tobias JD, Austin BA. Interpleural catheters for postoperative analgesia: perioperative considerations. Todays OR Nurse 1990; 12:32-4. [PMID: 2256134] [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: 12/31/2022]
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Tobias JD, Austin BA. Pediatric epidural catheter placement: perioperative considerations. Todays OR Nurse 1990; 12:30-2. [PMID: 2378015] [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: 12/31/2022]
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Rao BN, Austin BA. Methods to prevent dislodgement of externalized vascular access. Todays OR Nurse 1990; 12:30-1. [PMID: 2321252] [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: 12/31/2022]
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Mirro J, Rao BN, Kumar M, Rafferty M, Hancock M, Austin BA, Fairclough D, Lobe TE. A comparison of placement techniques and complications of externalized catheters and implantable port use in children with cancer. J Pediatr Surg 1990; 25:120-4. [PMID: 2299536 DOI: 10.1016/s0022-3468(05)80176-9] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The complications associated with the placement and use of Hickman catheters (n = 120), Broviac catheters (n = 146), and implantable ports (n = 93) in children with cancer were analyzed. Percutaneously placed central venous access devices (CVADs) tended to fail less often (P = .86) and to develop infections less often (P = .056) than surgically placed CVADs. The difference in complications with percutaneous versus surgically placed CVADs requires confirmation in a randomized trial to assure they are not a result of differences in patient characteristics. When all catheter failures (removal due to infection, obstruction, or dislodgement) were considered, ports had a significantly longer failure-free duration of use than externalized Hickman and Broviac catheters (P = .0009). Ports also remained infection-free longer than externalized catheters (P = .0014). The greatest risk of infection occurs in the first 100 days of use, particularly for ports. This study demonstrates that for long-term use (greater than 100 days) ports are superior to externalized catheters in children with cancer.
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Affiliation(s)
- J Mirro
- Department of Hematology-Oncology, St. Jude Children's Research Hospital, Memphis, TN 38101
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13
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Austin BA. Is a drug-free workplace possible? Todays OR Nurse 1989; 11:4. [PMID: 2588312] [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: 01/01/2023]
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Abstract
Between 1962 and 1988, a total of 104 patients with head and neck rhabdomyosarcoma (RMS) and 17 patients with nonrhabdomyosarcoma (NRMS) were evaluated and treated at St. Jude Children's Research Hospital. All parameningeal sites (middle ear, orbit, or nasopharynx) were excluded from further analysis; thus, 50 patients represent the cohort of head and neck sarcomas for this review. Survival was good in this group of patients, 28 of 50 being alive and disease-free at last follow-up. Twenty of the 38 patients with RMS were alive and disease-free. Similarly, 8 of the 12 patients with NRMS were disease-free at a median follow-up of 5 years. However, the site and size of the primary tumor impacted on the extent of the initial resection and further treatment in addition to surgery. Although the treatment policy evolved over time to a stage-specific strategy for treatment modalities, the data suggest that surgery alone may be sufficient initial therapy for a subset of patients. For patients in whom complete resection is not achieved, the addition of radiotherapy and chemotherapy may result in improved survival.
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Affiliation(s)
- B N Rao
- Department of Surgery, St. Jude Children's Research Hospital, Memphis, Tennessee 38101
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15
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Mirro J, Rao BN, Stokes DC, Austin BA, Kumar M, Dahl GV, Colten M, Balas L, Rafferty M, Hancock M. A prospective study of Hickman/Broviac catheters and implantable ports in pediatric oncology patients. J Clin Oncol 1989; 7:214-22. [PMID: 2915237 DOI: 10.1200/jco.1989.7.2.214] [Citation(s) in RCA: 115] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
We prospectively studied the continuous function and complication rates of 286 central venous catheters consecutively placed in 264 children and young adults at a single institution over a 19-month period (median follow-up, 376 days). Externalized catheters (91 Hickman [H], 113 Broviac [B]) and implantable ports (n = 82) were compared for complications, including infection and thrombosis. The most frequent major complication of all catheters was infection, although the rates of infection varied with the duration of catheter use and were generally lower than reported by others. Overall, when catheter failures (removal) for infection, obstruction, or dislodgement were considered, ports had a significantly longer failure-free duration of use (P = .0024) than did externalized catheters. Likewise, ports had a significantly longer infection-free (P less than .01) duration of use than H and B catheters. However, differences in patient age and clinical characteristics among the three catheter groups may have affected the outcome. In analysis of pairs matched for diagnosis, therapy, and age, ports had lower infection rates than did B catheters after 100 days (P = .053). This difference became significant at 400 days of catheter use (P = .029). Although there was a trend toward lower rates of infections for ports v H catheters, this difference was not significant. In view of our results in matched pairs, selection of catheter type based on clinical characteristics and patient preferences remains a reasonable therapeutic approach despite the apparent advantages of ports. The superiority of ports for long-term use (greater than 100 days) needs to be confirmed in a large randomized clinical trial.
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Affiliation(s)
- J Mirro
- Department of Hematology-Oncology, St. Jude Children's Research Hospital, Memphis, TN 38101
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16
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Rao BN, Hayes FA, Thompson EI, Kumar AP, Fleming ID, Green AA, Austin BA, Pate JW, Hustu HO. Chest wall resection for Ewing's sarcoma of the rib: an unnecessary procedure. Ann Thorac Surg 1988; 46:40-4. [PMID: 3382285 DOI: 10.1016/s0003-4975(10)65849-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Approximately 10% of all cases of Ewing's sarcoma arise from a rib. Conventional management has included chest wall resection (3 or more ribs) and radiation therapy. These forms of therapy have led to complications such as scoliosis and local deformity. The addition of radiation therapy can result in damage to the lung and adjacent viscera and also potentiate pulmonary restrictive disease. Between 1971 and 1978, 9 patients were treated with surgery, radiation therapy, and combination chemotherapy (three- or four-drug regimen). Only 2 patients (22%) survive. Since 1979, 14 patients were entered into a new protocol consisting of sequential induction chemotherapy, followed by delayed surgical resection whenever feasible. Three patients had complete resection of their primary lesion at onset. Initially, 7 patients had either biopsy (N = 4) or incomplete chest wall resection N = 3). All 4 patients with biopsy only at diagnosis had excellent responses to induction chemotherapy, allowing delayed resection of the involved rib without chest wall resection. Overall, 12 of 14 patients (86%) treated since 1979 survive, with only 2 receiving radiation therapy for residual disease in the primary rib site.
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Affiliation(s)
- B N Rao
- Division of Surgery, Hematology-Oncology, and Radiation Oncology, St. Jude Children's Research Hospital, Memphis, TN 38101
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Austin BA, Zacher JF. The photographer in the operating room. Todays OR Nurse 1987; 9:22-30. [PMID: 3650992] [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: 01/06/2023]
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Austin BA, Atwater C, Waage M. A preoperative teaching booklet for pediatric patients. Todays OR Nurse 1986; 8:24-33. [PMID: 3637037] [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: 01/06/2023]
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Abstract
Carcinoma of the large bowel is rare in persons under the age of 30, and generally presents with advanced stages of disease. From 1964 to 1984, 30 patients presented with nonfamilial large bowel malignancies. Seventeen patients were male, and 13 female (age range, 8-25 years). In 15 patients the primary was in the right transverse colon. In 26 patients the lesion was above the peritoneal reflection. Classification by Dukes' staging demonstrated Stage B in 3 patients, Stage C in 7 patients, and Stage D in 20 patients. Twenty-five patients had a mucinous variety of adenocarcinoma. Surgery at initial laparotomy consisted of biopsy (10 patients), palliative segmental resection (7 patients) and complete resection (13 patients; survival in each of these groups ranged from 1 to 15 months (median, 6 months), 6 to 36 months (median, 8 months) and 7 months to 14 years (median, 6 months), respectively. The only long-term survivors are three patients who had complete resection, two of whom are surviving free of disease after 5 and 15 years, respectively. Common sites of abdominal recurrence were the omentum (6 patients) and ovaries (7 patients). All patients received chemotherapy. In 16 of 24 evaluable patients, responses lasting 3 to 18 months were observed. Five patients also received radiation therapy. Follow-up of these patients included computed tomographic scans, ultrasound, and determination of carcinoembryonic antigen (CEA) levels. The CEA level in 9 of 23 patients did not correspond with the presence of either residual disease or progression of disease. Chemotherapy combined with a second-look surgical procedure in selected cases may improve the proportion of patients surviving and the duration of survival.
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20
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Abstract
Carcinoma of the large bowel is rare in persons under the age of 30, and generally presents with advanced stages of disease. From 1964 to 1984, 30 patients presented with nonfamilial large bowel malignancies. Seventeen patients were male, and 13 female (age range, 8-25 years). In 15 patients the primary was in the right transverse colon. In 26 patients the lesion was above the peritoneal reflection. Classification by Dukes' staging demonstrated Stage B in 3 patients, Stage C in 7 patients, and Stage D in 20 patients. Twenty-five patients had a mucinous variety of adenocarcinoma. Surgery at initial laparotomy consisted of biopsy (10 patients), palliative segmental resection (7 patients) and complete resection (13 patients; survival in each of these groups ranged from 1 to 15 months (median, 6 months), 6 to 36 months (median, 8 months) and 7 months to 14 years (median, 6 months), respectively. The only long-term survivors are three patients who had complete resection, two of whom are surviving free of disease after 5 and 15 years, respectively. Common sites of abdominal recurrence were the omentum (6 patients) and ovaries (7 patients). All patients received chemotherapy. In 16 of 24 evaluable patients, responses lasting 3 to 18 months were observed. Five patients also received radiation therapy. Follow-up of these patients included computed tomographic scans, ultrasound, and determination of carcinoembryonic antigen (CEA) levels. The CEA level in 9 of 23 patients did not correspond with the presence of either residual disease or progression of disease. Chemotherapy combined with a second-look surgical procedure in selected cases may improve the proportion of patients surviving and the duration of survival.
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Abstract
Research on loneliness and a theoretically plausible correlate of loneliness which has not been investigated is the relationship between loneliness and mass media consumption. 493 college students completed the Revised UCLA Loneliness Scale and reported the frequency of their using television, radio, movies, books, newspapers, and magazines. In general, virtually no relationship appeared between frequency of media use and level of loneliness.
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Austin BA, Glajchen DM, Hirson D. Feasibility of in vivo temperature monitoring using a passive microwave transponder. Med Biol Eng Comput 1984; 22:187-9. [PMID: 6717110 DOI: 10.1007/bf02446825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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24
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Abstract
Research on the topic of loneliness has begun to attract scholarly attention. The study reported here examined the dimensions of loneliness tapped by the often used UCLA Loneliness Scale which has previously been reported as a global, unidimensional, measure of the phenomenon. Data from 493 college students were subjected to factor analysis which yielded three factors. These factors were labeled and explained in terms of loneliness regarding Intimate Others, Social Others, and a feeling of a lack of Belonging and Affiliation. Demographic and attribute data were compared for each of the three dimensions. Additional research replicating this study on non-student populations is required to determine the validity of the present results for the general population.
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25
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