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Ryan JP, Fischer AM, Kudela RM, McManus MA, Myers JS, Paduan JD, Ruhsam CM, Woodson CB, Zhang Y. Recurrent frontal slicks of a coastal ocean upwelling shadow. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2010jc006398] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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de Barros DSM, Da Silva RS, Siam GA, Gheith ME, Nunes CM, Lankaranian D, Tittler EH, Myers JS, Spaeth GL. Should an iridectomy be routinely performed as a part of trabeculectomy? Two surgeons' clinical experience. Eye (Lond) 2007; 23:362-7. [PMID: 17992195 DOI: 10.1038/sj.eye.6703034] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
PURPOSE To investigate the effects of performing peripheral iridectomy on the outcome of trabeculectomy. METHODS Retrospective chart review of the medical records of 75 patients (75 eyes) who underwent trabeculectomy surgery, with or without peripheral iridectomy, who had been followed for more than 1 year. Data were collected preoperatively, 1 day postoperatively, on days 30-90 postoperatively, and 1-3 years postoperatively. The collected data included visual acuity, intraocular pressure, bleb development, postoperative inflammation, and complications. Thirty-six eyes (48%) had cataract extraction at the time of trabeculectomy. A peripheral iridectomy was performed in 43 cases (57%). Student's t-test was used for the statistical analyses. RESULTS Patients having peripheral iridectomy had more inflammation on days 30-90 than those who did not have peripheral iridectomy performed (in patients having cataract extraction with trabeculectomy (P=0.018) and those not having cataract extraction (P=0.038)). There was no statistically significant difference in intraocular pressure in eyes with or without iridectomy. Postoperative complications were rare in both groups but greater in number in the eyes with peripheral iridectomy. CONCLUSIONS Trabeculectomy performed without peripheral iridectomy appears to be as effective in lowering intraocular pressure as when performed with peripheral iridectomy, but it is a safer procedure, with a lower incidence of postoperative inflammation. It may be an advantage to avoid performing peripheral iridectomy during trabeculectomy in eyes that are not predisposed to postoperative shallowing of the anterior chamber or pupillary block.
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Affiliation(s)
- D S M de Barros
- The Glaucoma Service Department, Wills Eye Institute, Jefferson Medical College, Philadelphia, PA 19107, USA
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Rondeau G, Moreau I, Bézieau S, Petit JL, Heilig R, Fernandez S, Pennarun E, Myers JS, Batzer MA, Moisan JP, Devilder MC. Comprehensive analysis of a large genomic sequence at the putative B-cell chronic lymphocytic leukaemia (B-CLL) tumour suppresser gene locus. Mutat Res 2001; 458:55-70. [PMID: 11691637 DOI: 10.1016/s0027-5107(01)00219-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
In many haematological diseases, and more particularly in B-cell chronic lymphocytic leukaemia (B-CLL), the existence of a tumour suppressor gene located within the frequently deleted region 13q14.3, has been put forward. A wide candidate region spanning from marker D13S273 to D13S25 has been proposed and an extensive physical map has been constructed by several teams. In this study, we sequenced a minimal core deleted region that we have previously defined and annotated it with flanking available public sequences. Our analysis shows that this region is gene-poor. Furthermore, our work allowed us to identify new alternative transcripts, spanning core regions, of the previously defined candidate genes DLEU1 and DLEU2. Since their putative involvement in B-CLL was controversial, our present study provide support for reconsidering the DLEU1 and DLEU2 genes as B-CLL candidate genes, with a new definition of their organisation and context.
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Affiliation(s)
- G Rondeau
- INSERM U463, Institut de Biologie de l'Hôtel-Dieu, Centre Hospitalier Universitaire, 44093 Cedex, Nantes, France
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Henderer JD, Heeg MC, Spaeth GL, Moster MR, Myers JS, Schmidt CM, Katz LJ, Steinmann WC. A randomized trial of the long-term effects of digital ocular compression in the late postoperative period. J Glaucoma 2001; 10:266-70. [PMID: 11558809 DOI: 10.1097/00061198-200108000-00004] [Citation(s) in RCA: 9] [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: 11/26/2022]
Abstract
PURPOSE To determine whether digital ocular compression is a viable technique to lower intraocular pressure in patients at least 3 months after trabeculectomy. PATIENTS AND METHODS A 6-month prospective, randomized, controlled, single-masked trial of 29 patients who underwent a trabeculectomy at the Glaucoma Service of Wills Eye Hospital. Patients were assigned to two groups: ocular compression or cheekbone compression (control group). The ocular compression group performed compression to the operated eye three times a day in the pattern of 10 seconds of pressure, 5 seconds of rest, and 10 seconds of pressure. Pressure was applied with the index finger through the closed lid to the center of the cornea. Pressure was steady and firm, but not painful. No massaging was performed. The cheekbone compression group applied pressure to the zygomatic arch with an identical style and frequency. RESULTS At 6 months, the change in mean intraocular pressure for the ocular compression group was 0.25 mm Hg compared with -0.44 mm Hg for the control group (P = 0.7). A few patients in both groups experienced large swings in intraocular pressure and mild to moderate discomfort. CONCLUSION Ocular compression had little to no success in the long-term management of increased intraocular pressure in the late postoperative period in this study.
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Affiliation(s)
- J D Henderer
- William and Anna Goldberg Glaucoma Service, Wills Eye Hospital, Thomas Jefferson University School of Medicine, Philadelphia, Pennsylvania 19107, USA.
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Abstract
Given the recent interest in complementary and alternative medicine (CAM), some patients may seek such treatments to supplement their traditional glaucoma management. The prevalence of CAM use for glaucoma is approximately 5%. We reviewed the literature to determine the potential benefit of various alternative treatments. Aside from a temporary osmotic effect from high dose intravenous ascorbic acid, there is no evidence that megavitamin supplementation has a beneficial effect on glaucoma. During exercise, autoregulation in healthy eyes seems to maintain a consistent blood flow rate to the optic nerve despite fluctuations in intraocular pressure (IOP). In a glaucomatous eye, the very modest IOP-lowering that follows exercise may be offset by the initial elevation in IOP that occurs when one first initiates exercise. At this time, there is no evidence to encourage or discourage the use of special diets, acupuncture, relaxation techniques, or therapeutic touch specifically for the treatment of glaucoma. Very little research has been done on the majority of herbal remedies with regard to their treatment of glaucoma. Marijuana can cause a profound lowering of IOP, but the high nonresponse rate, short half life, and significant toxicity are strong indicators that it is not an appropriate therapeutic agent. Ginkgo biloba and some other Chinese herbal remedies do not affect IOP, but may improve blood flow to the optic nerve and, as such, may have a beneficial effect on glaucoma. These agents have recognized toxicities. Although there are some well-designed studies of alternative treatments, many of the recommendations for using alternative treatments are currently unsupported by the data provided.
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Affiliation(s)
- D J Rhee
- Glaucoma Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA
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Myers JS. Hypersensitivity reaction to paclitaxel: nursing interventions. Clin J Oncol Nurs 2000; 4:161-3. [PMID: 11261096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Paclitaxel, a mitotic inhibitor, is used to treat a variety of cancers. A significant incidence of paclitaxel-related hypersensitivity reactions (HSRs) occurs because of the diluent used. Premedication with dexamethasone, diphenhydramine, and H2-histamine antagonists has markedly decreased the incidence of HSRs. Paclitaxel-related HSRs should be managed immediately and appropriately by (a) stopping the infusion, (b) administering oxygen, (c) infusing fluids, (d) continuously monitoring blood pressure, pulse, and oxygenation, and (e) initiating standing orders for i.v. corticosteroids and diphenhydramine or other emergency medications. Oncology nurses are key to the rapid recognition and treatment of paclitaxel-related HSRs.
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Affiliation(s)
- J S Myers
- Research Medical Center, c/o 7 East Oncology, 2316 East Meyer Boulevard, Kansas City, MO 64132, USA.
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Myers JS, Kearney K. Emergency. Chemotherapy-induced hypersensitivity reaction. Am J Nurs 2000; 100:53-4. [PMID: 10776352] [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: 02/16/2023]
Affiliation(s)
- J S Myers
- Research Medical Center, Kansas City, MO, USA
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Abstract
OBJECTIVES To evaluate the effectiveness of excisional revision of filtering blebs for hypotony or leakage when more conservative measures have failed. PATIENTS AND METHODS Retrospective review of all patients who underwent excisional revision of a filtering bleb for hypotony (intraocular pressure [IOP] < 5 mm Hg) or leakage during a 3 year period. The revision consisted of excision of the avascular bleb, mobilization of the surrounding conjunctiva, and suturing of the conjunctiva at the limbus. RESULTS Sixteen patients were included in the study. The average age was 66.3 +/- 14.8 years (range, 39-83). Revision followed trabeculectomy in 11 cases, combined phacoemulsification-trabeculectomy in three cases, and inadvertent blebs in two cases. Five cases had bleb leaks without hypotony, four cases had hypotony alone, and seven cases had both hypotony and a bleb leak. Average follow-up after bleb revision was 25 +/- 11 months (range, 9-43). Average IOP increased from 3.8 +/- 5.6 mm Hg (range, 0-22) to 11.9 +/- 4.1 mm Hg (range, 3-18), with an average of 1.1 +/- 1.1 medication (range, 0-3). The IOP at the last visit was < 15 mm Hg in all but two patients, with 10 of the 16 patients requiring medications. At the last follow-up examination, visual acuity had improved > or = two lines in nine patients and was reduced two lines in one patient. Five patients had early postoperative limbal wound leaks; resuturing was required in one case. CONCLUSIONS Excisional bleb revision is an effective technique to correct hypotony or leakage after filtering surgery when other methods have failed. Intraocular pressure control is often maintained with the use of medications.
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Affiliation(s)
- J S Myers
- Wills Eye Hospital, Philadelphia, Pennsylvania 19107, USA
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Williams-Evans SA, Myers JS, Evena KR, Call-Schmidt T. The impact of domestic violence on children: an adolescents' story. ABNF J 2000; 11:34-6. [PMID: 11074984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The authors in this paper illustrate how growing up in a violent household impacts the emotional and psychological development of one college-aged student who confronts her father in a letter about his violent behavior as she was growing up. The Williams Assessment of Unresolved Issues (WAUI) survey instrument is briefly discussed as a tool in gathering data about violent episodes experienced by college-aged students during their childhood.
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Myers JS, Crowley JL. Vestiges of life in the oldest Greenland rocks? A review of early Archean geology in the Godthabsfjord region, and reappraisal of field evidence for > 3850 Ma life on Akilia. Precambrian Res 2000; 103:101-124. [PMID: 11577752 DOI: 10.1016/s0301-9268(00)00089-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The Godthåbsfjord region of West Greenland contains the most extensive, best exposed and most intensely studied early Archean rocks on Earth. A geological record has been described of numerous magmatic events between ~3.9 and 3.6 Ga, and evidence of life at >3.85 Ga and ~3.8-3.7 Ga has been proposed from two widely-separated localities. Some of these claims have recently been questioned, and the nature of the best preserved remnants of the oldest known terrestrial volcanic and sedimentary rocks in the Isua greenstone belt are being reinvestigated and substantially reinterpreted. The first part of this article reviews the evolution of geological research and interpretations, outlining the techniques by which the geological history has been determined and the ensuing controversies. The second part re-examines crucial field evidence upon which the antiquity of the oldest terrestrial life is claimed from the island of Akilia.
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Affiliation(s)
- J S Myers
- Department of Earth Sciences, Memorial University of Newfoundland, ST John's, Newfoundland, Canada A1B 3X5.
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Wan Z, Zhang Y, Ma X, King MD, Myers JS, Li X. Vicarious calibration of the moderate-resolution imaging spectroradiometer airborne simulator thermal-infrared channels. Appl Opt 1999; 38:6294-6306. [PMID: 18324156 DOI: 10.1364/ao.38.006294] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We made an experimental vicarious calibration of the Moderate Resolution Imaging Spectroradiometer (MODIS) Airborne Simulator (MAS) thermal infrared (TIR) channel data acquired in the field campaign near Mono Lake, Calif. on 10 March 1998 to demonstrate the advantage of using high-elevation sites in dry atmospheric conditions for vicarious calibration. With three lake-surface sites and one snow-field site, we estimated the MAS noise-equivalent temperature difference as 0.7-1.0 degrees C for bands 30-32 in the 3.68-4.13-microm region and 0.1-0.5 degrees C for bands 42, 45, 46, and 48 in the 8-13.5-microm region. This study shows that the MAS calibration error is within +/-0.4 degrees C in the split-window channels (at 11 and 12 microm) and larger in other TIR channels based on the MAS data over Mono Lake and in situ measurement data over the snow-field site.
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Affiliation(s)
- Z Wan
- Institute for Computational Earth System Science, University of California, Santa Barbara, Santa Barbara, California 93106, USA.
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Yang CB, Freedman SF, Myers JS, Buckley EG, Herndon LW, Allingham RR. Use of latanoprost in the treatment of glaucoma associated with Sturge-Weber syndrome. Am J Ophthalmol 1998; 126:600-2. [PMID: 9780111 DOI: 10.1016/s0002-9394(98)00129-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
PURPOSE To determine if latanoprost reduces intraocular pressure in eyes with glaucoma associated with Sturge-Weber syndrome. METHODS We conducted a prospective study in which eyes with uncontrolled intraocular pressure associated with Sturge-Weber syndrome were treated with latanoprost 0.005% once daily. All eyes were already receiving at least two other antiglaucoma medications. Intraocular pressure was measured at baseline and after treatment for at least 1 month. All intraocular pressure measurements were taken within 24 hours of drug instillation. RESULTS Six eyes of six patients received latanoprost. Two (28%) of the six eyes demonstrated an intraocular pressure decrease that averaged 8.8 mm Hg. These two responders had juvenile onset glaucoma, whereas the four nonresponders had congenital onset glaucoma. CONCLUSIONS Latanoprost may significantly reduce intraocular pressure in selected patients with glaucoma associated with Sturge-Weber syndrome.
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Affiliation(s)
- C B Yang
- Eye Physician Associates, S.C., Milwaukee, Wisconsin, USA
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Myers JS, Trevisani MG, Imami N, Herndon LW, Wolbarsht ML, Allingham RR, Straub KD, Shields MB. Laser energy reaching the posterior pole during transscleral cyclophotocoagulation. Arch Ophthalmol 1998; 116:488-91. [PMID: 9565047 DOI: 10.1001/archopht.116.4.488] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE To measure scattered laser energy reaching the posterior pole during transscleral cyclophotocoagulation. METHODS Transscleral cyclophotocoagulation was performed on 4 cadaver eyes with Nd:YAG noncontact, Nd:YAG contact, and diode contact lasers. Energy was measured with a photodiode through a 7-mm trephined hole in the posterior pole. Average percentage power, average power, and average energy transmission were calculated. American Conference of Governmental Industrial Hygienists (ACGIH) guidelines were used to calculate allowable energy exposures for each laser. RESULTS All 3 lasers transmitted 3% to 5% of the power to the posterior pole. The average energy transmission was 240 to 260 mJ for all lasers. The contact lasers had an average power transmission of 120 mW. The noncontact Nd:YAG laser, with shorter pulse duration, had an average power transmission of 13,000 mW, significantly greater than that of the other lasers. The ACGIH guidelines for allowable energy exposures were 93 mJ for the noncontact Nd:YAG laser, 1300 mJ for the contact Nd:YAG laser, and 440 mJ for the contact diode laser. CONCLUSIONS Three percent to 5% of laser power delivered during cyclophotocoagulation reaches the posterior pole. Exposure energies may approach or exceed ACGIH guidelines. The clinical significance of these findings remains to be shown.
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Affiliation(s)
- J S Myers
- Duke University Eye Center, Duke University, Durham, NC 27710, USA
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Thom SB, Myers JS, Rapuano CJ, Eagle RC, Siepser SB, Gomes JA. Effect of topical anti-transforming growth factor-beta on corneal stromal haze after photorefractive keratectomy in rabbits. J Cataract Refract Surg 1997; 23:1324-30. [PMID: 9423903 DOI: 10.1016/s0886-3350(97)80110-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE To determine the relationship between anti-transforming growth factor-beta (anti-TGF-beta) antibodies and the amount of corneal stromal haze after excimer laser photorefractive keratectomy (PRK). SETTING Wills Eye Hospital, Philadelphia, Pennsylvania, USA. METHODS Nineteen rabbits had bilateral PRK. Dichlorotriazinyl fluorescein was used to stain the exposed stroma; all rabbits were then treated with antibiotic ointment for 4 days. Ten rabbits were randomized to treatment with topical anti-TGF-beta1, -beta2, and -beta3 antibody 50 microg three times a day for 4 days; the others received diluent three times a day for 4 days. Stromal haze was graded weekly for 8 weeks on a 0 to 4+ scale. At the end of the study, all corneas were examined histopathologically. RESULTS All treated eyes developed appreciable haze. Seven control rabbits and one antibody-treated rabbit had an epithelial erosion (P = .00001). Antibody-treated rabbits had significantly less haze at 3, 4, and 5 weeks (right eyes) and 3, 4, 5, 7 and 8 weeks (left eyes) (P < .05). Histopathology and fluorescence microscopy showed subepithelial collagen deposition consistent with clinical haze. CONCLUSIONS Topical anti-TGF-beta antibody reduced stromal haze after PRK in the rabbit model and may be clinically beneficial in humans.
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Affiliation(s)
- S B Thom
- Cataract and Primary Eye Care Service, Wills Eye Hospital, Philadelphia, Pennsylvania 19107, USA
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Myers JS, Gomes JA, Siepser SB, Rapuano CJ, Eagle RC, Thom SB. Effect of Transforming Growth Factor β1 on Stromal Haze following Excimer Laser Photorefractive Keratectomy in Rabbits. J Refract Surg 1997; 13:356-61. [PMID: 9268935 DOI: 10.3928/1081-597x-19970701-11] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Transforming growth factor beta (TGF-beta) has been shown to affect wound repair. Anti-transforming growth factor beta 1 antibodies have been shown to neutralize its activity. METHODS Seventeen New Zealand White rabbits underwent unilateral photorefractive keratectomy followed by corneal staining with dichlorotriazinyl fluorescein. Three groups received topical transforming growth factor beta 1: 1 microgram/ml, 10 micrograms/ml, and 100 micrograms/ml; one group topical anti-transforming growth factor beta antibody (200 micrograms/ml); and a control group vehicle only. Corneal haze was graded from 0 to 4, weekly. Rabbits were sacrificed at 5 weeks and histopathological analysis and fluorescence microscopy performed. RESULTS All treated eyes developed haze and had epithelial erosions. No statistically significant differences in haze score were seen among individual treatment groups (Kruskal Wallis p > 0.05). The anti-transforming growth factor beta antibody group had less haze than all other groups at every week after the first. Comparing all transforming growth factor beta 1 treated eyes as one group to the antibody group, significantly less haze was seen at weeks 3 and 4 in the antibody treated group (p = 0.028 and 0.013, respectively). This study is limited by small group size and further studies are needed to confirm these results. CONCLUSION TGF-beta may be involved in stromal haze formation, and topical anti-TGF-beta 1 antibody may help reduce the development of stromal haze.
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Affiliation(s)
- J S Myers
- Wills Eye University Hospital, Philadelphia, Pennsylvania, USA
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Yang CB, Myers JS, Herndon LW, Allingham RR, Shields MB. Rate of progression in open-angle glaucoma estimated from cross-sectional prevalence of visual field damage. Am J Ophthalmol 1997; 123:426-8. [PMID: 9063267 DOI: 10.1016/s0002-9394(14)70154-0] [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: 02/03/2023]
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Myers JS, Warren T. Elastic net secures facial dressing comfortably. Oncol Nurs Forum 1996; 23:1484. [PMID: 8899765] [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: 02/02/2023]
Affiliation(s)
- J S Myers
- Research Medical Center, Kansas City, MO, USA
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Myers JS, Schnall BM. Bilateral posterior lenticonus. Ophthalmic Surg 1995; 26:383-4. [PMID: 8532299] [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] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- J S Myers
- Pediatric Clinic, Wills Eye Hospital, Philadelphia, PA 19107, USA
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Myers JS, Kyle KS. Intermediate-term intravenous therapy: a pilot study. J Post Anesth Nurs 1993; 8:21-25. [PMID: 8478804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Midline catheters provide an effective alternative for intermediate-term intravenous therapy. During a pilot study, 27 midline catheters were inserted in patients who met specific criteria. The insertion success rate was 64%, and the infection rate was 7%. One mechanical phlebitis occurred, but it was resolved by the application of warm, moist heat. One chemical phlebitis occurred during antibiotic therapy. The average dwell time was 8.7 days, and the longest dwell time was 49 days. Patients reported the catheters to be very comfortable and did not experience limitations in mobility.
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Kyle KS, Myers JS. Peripherally inserted central catheters. Development of a hospital-based program. J Intraven Nurs 1990; 13:287-90. [PMID: 2401933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Peripherally inserted central catheter lines (PICCs) are the "new kids on the block" for intravenous therapy. This paper reports on the development of a protocol and training program for nurses at a 350-bed community hospital. The paper describes the development and implementation of this pilot program in 25 patients over a 1-year period.
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Myers JS, Davidson J, Hutt P, Chatham S. Standardized teaching plans for management of chemotherapy and radiation therapy side effects. Oncol Nurs Forum 1987; 14:95-9. [PMID: 3658784] [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: 01/06/2023]
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Myers JS. Cancer pain: assessment of nurses' knowledge and attitudes. Oncol Nurs Forum 1985; 12:62-6. [PMID: 3847997] [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: 01/07/2023]
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Myers JS, Gabriel O. Specific conversion of D-galactose into D-galacturonic acid residues in glycoproteins: a facile method for carbohydrate linkage-analysis. Carbohydr Res 1978; 67:223-34. [PMID: 709566 DOI: 10.1016/s0008-6215(00)83744-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The terminal D-galactopyranosyl residues of asialoglycopeptides isolated from human alpha1-acid glycoprotein were oxidized in nearly quantitative yield to the corresponding uronic acid residues by a two-step sequence employing D-galactose oxidase followed by treatment with Tollens reagent, Ag(NH3)+2. Mild acid hydrolysis of the oxidized glycopeptides led to the isolation of the corresponding aldobiuronic acid(s). Structural and colorimetric analysis revealed that only one aldobiuronic acid 2-amino-2-deoxy-4-O-(beta-D-galactopyranosyluronic acid)-D-glucose, was isolated from the oxidized glycopeptides of alpha1-acid glycoprotein. This method can readily distinguish between the (1 leads to 3), (1 leads to 4), and (1 leads to 6) isomers of the corresponding aldobiuronic acids.
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Myers JS, Jakoby WB. Glycerol as an agent eliciting small conformational changes in alcohol dehydrogenase. J Biol Chem 1975; 250:3785-9. [PMID: 165183] [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: 12/13/2022] Open
Abstract
Yeast alcohol dehydrogenase is an example of a protein in which the K-m for substrate is substantially decreased by the presence of glycerol. The polyol has the effect at pH 8.0 or above of decreasing K-m and K-s for substrate and of altering both the protein's intrinsic fluorescence and ultraviolet absorption difference spectrum. The relationship between each of thse parameters and glycerol concentration displays a transition at a glycerol concentration of 20%. Circular dichroism values for the enzyme are not affected by glycerol over a large range of concentration and temperature. Treatment of the enzyme with glutaraldehyde results in the formation of cross-linked tetramers, the K-m of which are not altered by the presence of the solvent. The data are interpreted as reflecting a change in the conformation of the protein induced by glycerol.
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