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Bordelon AP, Keller HW, Scarborough AR. An inexpensive moist chamber culture technique for finding microbiota on live tree bark. Appl Plant Sci 2024; 12:e11578. [PMID: 38638615 PMCID: PMC11022227 DOI: 10.1002/aps3.11578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 03/04/2024] [Accepted: 03/07/2024] [Indexed: 04/20/2024]
Abstract
Premise Traditional moist chamber cultures (MCs) prepared in aseptic laboratory environments using sterile Petri dishes are commonly used to quantify the microbiota of rough-bark tree species and woody vines. MCs are typically expensive and may be difficult to make, so a less expensive option made from easily available supplies was developed. These cost-friendly MCs were compared with standard laboratory methods to demonstrate their efficacy. Methods and Results Modified MCs were made using inexpensive, store-bought supplies; compared to a standard laboratory setting, the modified MCs are shown to be less expensive with a faster setup time and larger size that facilitates a variety of tree and woody vine species. MC use resulted in the discovery of new species of fungi and myxomycetes with associated locality records. We provide detailed instructions for creating modified MCs, as well as a list of myxomycete species and their associated bark characteristics, pH values, and water-holding capacity. Conclusions This new, low-cost MC technique makes the study of microbiota more inclusive and accessible for those in research laboratories, classrooms, and homes, including both amateurs and professionals. MCs are easy to prepare, versatile, and applicable for many areas of botany and the biological sciences, potentially allowing exploration into unexplored areas in urban ecosystems.
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Affiliation(s)
- Ashley P. Bordelon
- Botanical Research Institute of Texas1700 University DriveFort Worth76107TexasUSA
| | - Harold W. Keller
- Botanical Research Institute of Texas1700 University DriveFort Worth76107TexasUSA
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Keller HW. Corticolous Myxomycetes VIII: Trabrooksia, A New Genus. Mycologia 2018. [DOI: 10.1080/00275514.1980.12021191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Harold W. Keller
- Department of Microbiology and Immunology, Wright State University, Dayton, Ohio 45435
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Affiliation(s)
- Harold W. Keller
- Department of Botany, University of Florida, Gainesville, Florida 32601
| | - Travis E. Brooks
- Department of Biology, Southeast Missouri State University Cape Girardeau, Missouri 63701
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Affiliation(s)
- Thomas J. Raub
- Department of Biology, Slippery Rock State College, Slippery Rock, Pennsylvania 16057
| | - Harold W. Keller
- Department of Microbiology and Immunology, Wright State University, Dayton, Ohio 45435
| | - Thomas W. Gaither
- Department of Biology, Slippery Rock State College, Slippery Rock, Pennsylvania 16057
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Affiliation(s)
- Harold W. Keller
- Department of Biological Sciences, Wright State University, Dayton, Ohio 45431
| | - Travis E. Brooks
- Department of Biology, Southeast Missouri State University, Cape Girardeau, Missouri 63701
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Affiliation(s)
- Harold W. Keller
- Department of Biological Sciences, Wright State University, Dayton, Ohio 45431
| | - Travis E. Brooks
- Department of Biology, Southeast Missouri State University, Cape Girardeau Missouri 63701
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Affiliation(s)
- Harold W. Keller
- Department of Biological Sciences, Wright State University, Dayton, Ohio 45431
| | - Travis E. Brooks
- Department of Biology, Southeast Missouri State University, Cape Girardeau, Missouri 63701
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Affiliation(s)
- Harold W. Keller
- Department of Biological Sciences, Wright State University, Dayton, Ohio 45435
| | - David M. Smith
- Department of Biological Sciences, Wright State University, Dayton, Ohio 45435
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Keller HW, Aldrich HC, Brooks TE. Corticolous Myxomycetes II: Notes on Minakatella Longifila with Ultrastructural Evidence for its Transfer to the Trichiaceae. Mycologia 2018. [DOI: 10.1080/00275514.1973.12019492] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Harold W. Keller
- Department of Botany, University of Florida, Gainesville, Florida 32601
| | - Henry C. Aldrich
- Department of Botany, University of Florida, Gainesville, Florida 32601
| | - Travis E. Brooks
- Department of Biology, Southeast Missouri State University Cape Girardeau, Missouri 63701
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Affiliation(s)
- Harold W. Keller
- Department of Biological Sciences, Wright State University, Dayton, Ohio 45431
| | - Henry C. Aldrich
- Department of Botany, University of Florida, Gainesville, Florida 32601
| | - Travis E. Brooks
- Department of Biology, Southeast Missouri State University, Cape Girardeau, Missouri 63701
| | - Jean D. Schoknecht
- Department of Life Sciences, Indiana State University, Terre Haute, Indiana 47809
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Affiliation(s)
- Travis E. Brooks
- Department of Biology, Southeast Missouri State University, Cape Girardeau, Missouri 63701
| | - Harold W. Keller
- Department of Biological Sciences, Wright State University, Dayton, Ohio 45431
| | - Maurice Chassain
- Rue du Vignoble, 44450 Saint Julien de Concelles et Chaire d'Ecologie, Ecole d'Agriculture de Briacé, 4430 Le Landreau, France
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Affiliation(s)
| | - Don R. Reynolds
- Department of Biology, Florida Technological University, Orlando, Florida 32816
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Affiliation(s)
| | - Travis E. Brooks
- Department of Biology, Southeast Missouri State College, Cape Girardeau, Missouri 63701
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Affiliation(s)
- Harold W. Keller
- Department of Microbiology and Immunology, Wright State University, Dayton, Ohio 45435
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Affiliation(s)
- Kenneth D. Whitney
- Department of Biological Sciences, California State University, Chico, California 95926
| | - Harold W. Keller
- Department of Microbiology and Immunology, Wright State University, Dayton, Ohio 45435
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Affiliation(s)
- Harold W. Keller
- Department of Biology, University of Texas at Arlington, Arlington, Texas 76019
| | - Jean D. Schoknecht
- Department of Botany and Plant Pathology, Illinois Natural History Survey, Champaign, Illinois 61820
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Keller HW, Eliasson UH, Braun KL, Buben-Zurey MJ. Corticolous Myxomycetes X: Ultrastructure and Taxonomic Status of Cribraria Minutissima and C. Confusa. Mycologia 2018. [DOI: 10.1080/00275514.1988.12025576] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Harold W. Keller
- Department of Biology, The University of Texas at Arlington, Arlington, Texas 76019
| | - Uno H. Eliasson
- Department of Systematic Botany, University of Gothenburg, Carl Skottsbergs Gata 22, S-41319 Gothenburg, Sweden
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Affiliation(s)
- Harold W. Keller
- Department of Biology, University of Texas at Arlington, Arlington, Texas 76019
| | - Jean D. Schoknecht
- Department of Botany and Plant Pathology, Illinois Natural History Survey, Champaign, Illinois 61820
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Affiliation(s)
- Harold W. Keller
- Department of Biology, University of Texas at Arlington, Arlington, Texas 76019
| | - Jean D. Schoknecht
- Department of Botany and Plant Pathology, Illinois Natural History Survey, Champaign, Illinois 61820
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Affiliation(s)
- Harold W. Keller
- Department of Biology, University of Texas at Arlington, Arlington, Texas 76019
| | - Jean D. Schoknecht
- Department of Botany and Plant Pathology, Illinois Natural History Survey, Champaign, Illinois 61820
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Snell KL, Keller HW. Vertical distribution and assemblages of corticolous myxomycetes on five tree species in the Great Smoky Mountains National Park. Mycologia 2017; 95:565-76. [DOI: 10.1080/15572536.2004.11833060] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - Harold W. Keller
- Department of Biology, Central Missouri State University, Warrensburg, Missouri 64093
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Affiliation(s)
| | - Kenneth L. Snell
- Department of Biology, Central Missouri State University, Warrensburg, Missouri 64093
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Keller HW, Skrabal M, Eliasson UH, Gaither TW. Tree canopy biodiversity in the Great Smoky Mountains National Park: ecological and developmental observations of a new myxomycete species of Diachea. Mycologia 2017. [DOI: 10.1080/15572536.2005.11832952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - Melissa Skrabal
- Department of Biology, Central Missouri State University, Warrensburg, Missouri 64093
| | - Uno H. Eliasson
- Botanical Institute, Göteborg University, Box 461, SE 405 30 Göteborg, Sweden
| | - Thomas W. Gaither
- Department of Biology, Slippery Rock University, Slippery Rock, Pennsylvania 16057
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Estrada-Torres A, Gaither TW, Miller DL, Lado C, Keller HW. The myxomycete genusSchenella: morphological and DNA sequence evidence for synonymy with the gasteromycete genusPyrenogaster. Mycologia 2017. [DOI: 10.1080/15572536.2006.11832847] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Arturo Estrada-Torres
- Centro de Investigaciones en Ciencias Biológicas, Universidad Autónoma de Tlaxcala, Apdo. Postal 183. Tlaxcala 90000, México
| | - Thomas W. Gaither
- Department of Biology, Slippery Rock University, Slippery Rock, Pennsylvania 16507-1325
| | - Dennis L. Miller
- Department of Molecular and Cell Biology F03.1, University of Texas at Dallas, Richardson, Texas 75080
| | - Carlos Lado
- Real Jardín Botánico, CSIC. Plaza de Murillo 2, 28014 Madrid, España
| | - Harold W. Keller
- Department of Biology, Central Missouri State University, Warrensburg, Missouri 64093
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Affiliation(s)
| | | | - Joseph S. Ely
- Department of Biology, University of Central Missouri, Warrensburg, Missouri 64093
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Affiliation(s)
- Courtney M. Kilgore
- Department of Biology and Earth Science, University of Central Missouri, Warrensburg, Missouri 64093
| | | | - Joseph S. Ely
- Department of Biology and Earth Science, University of Central Missouri, Warrensburg, Missouri 64093, and the Botanical Research Institute of Texas, Fort Worth, Texas 76102
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Abstract
Fungi and vascular plant interactions are necessary components of natural community establishment, productivity and degradation. While many fungal species serve as decomposers of organic matter, others have evolved mutualistic or parasitic relationships with vascular plants. This research focused on characterizing associations among macrofungi, vascular plant communities and soils. Ha Ha Tonka State Park is in central Missouri and has a varying landscape with numerous natural community types that provide diverse habitats and microhabitats that are ideally suited to the investigation of fungal, floral and soil associations. Five communities sampled within the park included glades, open woodlands, flatwoods, closed-canopy forests and karst sinks. Permanent 0.01 ha. plots were surveyed in the 2006 and 2007 growing seasons. Surveys of plots and entire communities yielded 249 fungal taxa and approximately 265 floral taxa. Soils were analyzed to help define specific edaphic components of each community and used to associate soil attributes with plant and fungal communities. Forest communities contained the most ectomycorrhizal (ECM) fungi species. Karst sinks and glades had higher soil pH and phosphorus and fewer ectomycorrhizal fungi. Statistical analyses included non-metric multidimensional scaling, multiresponse permutation procedure and indicator species analysis. Indicator species were identified for flatwood, forest and karst communities, but results were inconclusive for glades and open woodlands.
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Affiliation(s)
- Christopher D Crabtree
- Department of Biology and Earth Science, University of Central Missouri, Warrensburg, Missouri 64093, USA.
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Abstract
This study compares the occurrence and distribution of myxomycete species in the canopy of living trees and neighboring grapevines. Corticolous myxomycetes of three temperate forests in southeastern USA were studied on six tree species (30 trees) and grapevines (30 vines) to determine distribution and occurrence of myxomycete species relating to geographic location, host species, and bark pH. The double-rope climbing technique was used to access the canopy and sample bark up to 16.5 m. Bark samples were examined in 580 moist chamber cultures and 44 myxomycete species were identified representing 21 genera, averaging 3.0 +/- 2.1 species per sample site. Jaccard's coefficient determined community similarity between five individuals of six tree species, Acer saccharum, Fraxinus americana, Liquidambar styraciflua, Liriodendron tulipifera, Platanus occidentalis and Tsuga canadensis, and neighboring grapevines, Vitis aestivalis and V. vulpina. Vertical variation in species richness was significantly different only for Platanus occidentalis and might be attributable to flaking of bark with increasing height in the canopy. Tsuga canadensis and neighboring grapevines had greatest community similarity. Cribraria violacea was observed on all tree and grapevine species except T. canadensis and neighboring grapevines. Occurrence and species assemblages of myxomycetes were associated with bark pH, not geographic location. Bark of V. aestivalis (pH 4.5) was more acidic than neighboring T. canadensis (pH 4.1), compared to grapevines of the same species neighboring other tree species. Results indicated that most species are not regionally restricted, and although some myxomycetes are associated with a certain pH range, others develop on any substratum. Future research protocols for corticolous myxomycetes should emphasize sampling adequate amounts of substrata in a local region from different host species that have a wide range of bark pH, ensuring a representative sample of species for an entire region.
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Affiliation(s)
- Sydney E Everhart
- Department of Biology, University of Central Missouri, Warrensburg, Missouri 64093, USA
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Estrada-Torres A, Gaither TW, Miller DL, Lado C, Keller HW. The myxomycete genus Schenella: morphological and DNA sequence evidence for synonymy with the gasteromycete genus Pyrenogaster. Mycologia 2005; 97:139-49. [PMID: 16389965 DOI: 10.3852/mycologia.97.1.139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 11/10/2022]
Abstract
The genus Schenella has proven difficult to classify since its description as a new genus in 1911. Macbride placed it with the Myxomycetes but it was unclear with which myxomycete, if any, it should be grouped. Recent identification of abundant samples of Schenella has aided a re-evaluation of its classification as a myxomycete. Morphological evidence based on light and scanning electron microscopy of recently collected specimens and on the type specimen of Macbride suggested that it might be synonymous with the gasteromycete Pyrenogaster Analysis of DNA sequences from freshly isolated samples indicates that the genus Schenella is related closely to an anciently diverged, monophyletic group of fungi that includes several gasteromycete genera, among them Geastrum, Sphaerobolus and Pseudocolus. Comparisons of the morphology and DNA sequences of authentically identified specimens of Pyrenogaster atrogleba indicate that it is synonymous with Schenella simplex. The nomenclatural implications of this discovery are discussed.
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Affiliation(s)
- Arturo Estrada-Torres
- Centro de Investigaciones en Ciencias Biológicas, Universidad Autónoma de Tlaxcala, Mexico
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Keller HW, Skrabal M, Eliasson UH, Gaither TW. Tree Canopy Biodiversity in the Great Smoky Mountains National Park: Ecological and Developmental Observations of a New Myxomycete Species of Diachea. Mycologia 2004. [DOI: 10.2307/3762173] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Keller HW, Skrabal M, Eliasson UH, Gaither TW. Tree canopy biodiversity in the Great Smoky Mountains National Park: ecological and developmental observations of a new myxomycete species of Diachea. Mycologia 2004; 96:537-547. [PMID: 21148876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A survey and inventory of tree canopy bio-diversity for cryptogams (myxomycetes, macrofungi, mosses, liverworts, lichens and ferns) in the Great Smoky Mountains National Park resulted in the discovery of an undescribed myxomycete species. This taxon is classified in the order Physarales, family Di-dymiaceae and genus Diachea. A combination of morphological characteristics distinguishes Diachea arboricola H.W. Keller & M. Skrabal sp. nov. from all other species in the genus: peridium iridescent gold to silvery gray; stalk reddish orange above and whitish below, filled with crystals; capillitial threads stiff, dichotomously branched and arising from the tip of the columella; spore ornamentation uniformly covering the entire spore surface, appearing spiny with light microscopy, with scanning electron microscopy as vertical processes with capitate, clustered, spike-like tips. This type of spore ornamentation has not been found in any other Diachea species. Diachea arboricola is known only from the tree canopy, ranging in height from roughly 3 to 21 m, on three tree species, Fraxinus americana, Juniperus virginiana and Quercus alba. Observations of plasmodial growth and fruiting body development are described based on moist chamber cultures. Tree canopy observations in situ suggest that the plasmodium of this species migrates over extensive vertical areas of tree bark. Ecological factors are discussed that include pH of bark substrata. The species description is based on abundant sporangia from 17 different collections. A key to the species of Diachea is provided to aid in the identification of this taxon.
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Affiliation(s)
- Harold W Keller
- Department of Biology, Central Missouri State University, Warrensburg, Missouri 64093
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Snell KL, Keller HW. Vertical Distribution and Assemblages of Corticolous Myxomycetes on Five Tree Species in the Great Smoky Mountains National Park. Mycologia 2003. [DOI: 10.2307/3761932] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Keller HW, Snell KL. Feeding activities of slugs on Myxomycetes and macrofungi. Mycologia 2002; 94:757-760. [PMID: 21156549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Affiliation(s)
- Harold W Keller
- Department of Biology, Central Missouri State University, Warrensburg, Missouri 64093
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Abstract
We report the case of a 78-year-old woman with the endoscopic tentative diagnosis of a malignant tumor of the colon ascendens (biopsy without malignancy) that was removed by right hemicolectomy. Extensive mesenteric infiltration and colonic obstruction seemed to confirm this diagnosis. Surprisingly histology revealed invasion by sclerosing mesenteritis. The differential diagnoses include inflammatory pseudotumor, tumor-like fibromatosis at traumatized sites, idiopathic retroperitoneal fibromatosis, sclerosing malignant lymphoma, liposarcoma and drug-induced sclerosing mesenteritis, as well as mesenteric infiltration and metastases. Though preoperative diagnosis is not possible in most cases, the intraoperative macroscopic appearance and the histopathologic picture are conclusive.
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Affiliation(s)
- J Isenberg
- Abteilung für Allgemeine, Visceral-, Thorax- und Unfallchirurgie, Malteser-Krankenhaus, Bonn
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Eliasson UH, Keller HW. Coprophilous myxomycetes: updated summary, key to species, and taxonomic observations on Trichia brunnea, Arcyria elaterensis, and Arcyria stipata. ACTA ACUST UNITED AC 1999. [DOI: 10.29203/ka.1999.332] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
HISTORY AND CLINICAL FINDINGS A 58-year-old man was hospitalized because of acute dull upper abdominal pain, radiating into the right flank and lower abdomen. The past history was unremarkable expect for thyroidectomy, performed 30 years previously for thyroid carcinoma. There was painful resistance on palpation of the right upper abdomen. The patient had not recently sustained any trauma. BIOCHEMICAL AND IMAGING INVESTIGATIONS: Erythrocyte sedimentation rate was increased to 38 mm/h, haemoglobin concentration was 11.7 g/dl but fell to 9.9 g/dl within the first 24 hours. Ultrasound and computed tomography (CT) revealed a large retroperitoneal mass (5 x 6.5 x 15 cm), its density of 64 Hounsfield units most strongly suggesting an haematoma. CT also showed enlargement of the right adrenal. Chest radiography demonstrated a space-occupying lesion in the right upper lobe. DIAGNOSIS, TREATMENT AND COURSE As a retroperitoneal haematoma of uncertain aetiology was suspected, a laparotomy was performed. The haematoma was evacuated and the adrenal, showing tumours changes, was excised. Histologically it was a mucocellular metastasis. The chest radiograph suggested carcinoma of the lung as the primary. The illness took a rapidly fatal course. Autopsy confirmed a poorly differentiated adenocarcinoma of the lung. CONCLUSION Trauma or anticoagulation should be considered first in the differential diagnosis of retroperitoneal haematoma of uncertain aetiology. However, adrenal metastasis should be thought of as a rare possibility.
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Affiliation(s)
- U Tappe
- Innere Abteilung, Malteserkrankenhauses Bonn
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Miller JD, Palm ME, Liddell C, Francisco MS, Wicklow DT, Keller HW. Book Reviews. Mycologia 1997. [DOI: 10.1080/00275514.1997.12026792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
| | - Mary E. Palm
- USDA/APHIS, Systematic Botany and Mycology Laboratory, Beltsville, Maryland
| | | | | | | | - Harold W. Keller
- University of North Texas Health Sciences Center and Botanical Research Institute of Texas, Forth Worth, Texas
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Keller HW, Neubert H, Baumann K. Die Myxomyceten Deutschlands und des angtenzenden Alpenraumes unter besonderer Beruchsichtigung Osterreichs, Band 2, Physarales (The Myxomycetes of Germany and Its Bordering Alpine Areas with Special Attention to Austria, Vol. 2, Physarales). Mycologia 1997. [DOI: 10.2307/3761098] [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: 11/10/2022]
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Abstract
The data from 1050 patients who had undergone colorectal carcinoma resection at the University of Cologne between 1976 and 1990 were studied. The aim of the study was to determine the concomitant effects on survival of several patient characteristics (sex, age, tumour localization, blood transfusion) and histopathological variables (Dukes' staging). We first calculated survival rates, both including and excluding post-operative mortality. We set up a hierarchical log-linear model for the detection of relationships between selected crossclassified categorial variables. We then used Cox's proportional hazard regression method to study the relationship between survival and different prognostic patterns. Dukes' staging was shown to be a highly discriminating factor in survival (P<0.001). Survival rates were better in women (P<0.001), and better for younger patients (<70 years; P<0.001). Tumour site (colon; P = 0.0362) and blood transfusion (P = 0.0857) also correlated with survival.
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Affiliation(s)
- U Wolters
- Department of Surgery, University of Cologne, Germany
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Abstract
210Pb has been measured in indoor air by two methods. Low flow rate pumps and membrane filters were used to collect the samples. The air filter samples were stored for 1.7 y, after which total alpha activity was determined by scintillation counting. 210Pb was then chemically separated and measured by alpha spectrometry. The efficacy of determination of 210Pb by total alpha measurement was empirically proven. The average air concentration determined by total alpha counting was 340 microBq 210Pb m-3 and 360 microBq 210Pb m-3 by radiochemical analysis.
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Affiliation(s)
- I M Fisenne
- U.S. Department of Energy, Environmental Measurements Laboratory, New York, NY 10014-4811, USA
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Abstract
To correct angulation and to avoid plaster immobilization in diaphyseal fractures in childhood, intramedullary nailing with flexible titanium pins is an easy and safe method. Under radiographic control, fractures of femur, tibia, and humerus are stabilized with two crossing pins. Forearm fractures are splinted with a single pin each in the radius and the ulna. Even displaced fractures of the radial neck can be corrected with a distally introduced titanium pin. This method is safe in elective trauma surgery and will especially be useful in polytraumatized children in whom multiple fractures should be stabilized with minimal x-ray exposure in a short time.
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Affiliation(s)
- R I Huber
- University of Cologne, Department of Trauma-, Hand-, and Reconstructive Surgery, Germany
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Isenberg J, Fischbach R, Krüger I, Keller HW. Treatment of liver metastases from colorectal cancer. Anticancer Res 1996; 16:1291-5. [PMID: 8702252] [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: 02/01/2023]
Abstract
197 cases of distant metastases from colorectal cancer (Dukes A, B, C) were diagnosed in 664 patients after curative resection of the primary tumor. Extrahepatic progress could be excluded in 98 of 142 patients with liver metastases. These 98 patients were allocated to surgical treatment (n = 17), intraarterial chemotherapy (n = 24), transarterial chemoembolization (n = 20), systemic chemotherapy (n = 10) and syptomatic therapy (n = 27) depending on the extent and localization of the disease within the liver and the patients' general condition. Curative success in 12 of 17 patients with a 5-year survival of 47% was achieved by the careful selection of patients for surgical treatment. Prolonged median survival after systemic chemotherapy (13 months), intraarterial chemotherapy (11 months) and transarterial chemoembolization of hepatic metastases (12 months) compared with the survival of patients with a symptomatic treatment only (median 11 months) could not be demonstrated, in spite o local therapeutic effects (intraarterial chemotherapy response rate 42%, transarterial chemoembolization morphologic response 82%). Effective postoperative diagnostic screening determines the percentage of potential curative surgical treatment; nonsurgical approaches failed to demonstrate prolonged survival.
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Affiliation(s)
- J Isenberg
- Klinik und Poliklinik für Chirurgie der Universität zu Köln, Germany
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Keller HW, Isenberg J, Takai S. [Diagnosis and therapy of splenic rupture]. Chirurg 1995; 66:1092-6. [PMID: 8542771] [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: 01/31/2023]
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