Roberta L. Lyman

Works (16)

Updated: July 5th, 2023 16:03

2017 journal article

Using milk leukocyte differentials for diagnosis of subclinical bovine mastitis

Journal of Dairy Research, 84(3), 309–317.

By: J. Gonçalves  n, R. Lyman n, M. Hockett*, R. Rodriguez*, M. dos Santos * & K. Anderson n

author keywords: mastitis; diagnosis; milk leukocyte; differential cell count
MeSH headings : Animals; Cattle; Cell Count / veterinary; Female; Leukocyte Count / veterinary; Lymphocytes; Macrophages; Mastitis, Bovine / blood; Mastitis, Bovine / diagnosis; Mastitis, Bovine / microbiology; Milk / cytology; Milk / microbiology; Neutrophils
TL;DR: The milk leukocyte differential can provide an analysis of mammary quarter status more detailed than provided by SCC alone; however, the MLD response to subclinical mastitis was not found useful to specifically identify the causative pathogen. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, Crossref
Added: August 6, 2018

2014 journal article

Short communication: An in vitro assessment of the antibacterial activity of plant-derived oils

JOURNAL OF DAIRY SCIENCE, 97(9), 5587–5591.

By: K. Mullen n, A. Lee n, R. Lyman n, S. Mason *, S. Washburn n & K. Anderson n

author keywords: mastitis; plant-derived oils; alternative to antibiotics; organic
MeSH headings : Animals; Anti-Bacterial Agents / pharmacology; Cattle; Female; Mammary Glands, Animal / drug effects; Mammary Glands, Animal / microbiology; Mastitis, Bovine / drug therapy; Mastitis, Bovine / microbiology; Milk / microbiology; Oils, Volatile / pharmacology; Plant Oils / pharmacology; Staphylococcus / drug effects; Staphylococcus aureus / drug effects; Streptococcus / drug effects; Thymus Plant / chemistry
TL;DR: Only thyme essential oil had consistent antibacterial activity against the 3 mastitis-causing organisms tested in vitro, and further evaluation of physiological effects of thyme oil in various preparations on mammary tissue is recommended to determine potential suitability for mastitis therapy. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2012 journal article

An Outbreak and Source Investigation of Enterococcal Spondylitis in Broilers Caused by Enterococcus cecorum

AVIAN DISEASES, 56(4), 768–773.

By: K. Robbins n, M. Suyemoto, R. Lyman*, M. Martin*, H. Barnes & L. Borst* 

author keywords: broiler; chicken; Enterococcus cecorum; enterococcal spondylitis
MeSH headings : Animals; Bacterial Typing Techniques / veterinary; Cecum / microbiology; Chickens; Cloaca / microbiology; Disease Outbreaks / veterinary; Electrophoresis, Gel, Pulsed-Field / veterinary; Enterococcus / isolation & purification; Enterococcus / physiology; Fatal Outcome; Gram-Positive Bacterial Infections / diagnosis; Gram-Positive Bacterial Infections / epidemiology; Gram-Positive Bacterial Infections / microbiology; Gram-Positive Bacterial Infections / veterinary; North Carolina / epidemiology; Phenotype; Poultry Diseases / diagnosis; Poultry Diseases / epidemiology; Poultry Diseases / microbiology; Spondylitis / diagnosis; Spondylitis / epidemiology; Spondylitis / microbiology; Spondylitis / veterinary
TL;DR: Enterococcus cecorum was isolated from spondylitis lesions in broilers from two flocks in North Carolina that were experiencing increased mortality and revealed paresis and paralysis, clinical signs characteristic of enterococcal spONDylitis (ES). (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 journal article

Bovine Staphylococcus aureus: Dose response to iodine and chlorhexidine and effect of iodine challenge on antibiotic susceptibility

JOURNAL OF DAIRY SCIENCE, 96(2), 993–999.

By: R. Azizoglu n, R. Lyman n & K. Anderson n

author keywords: Staphylococcus aureus; disinfectant tolerance; mastitis; antibiotic stress
MeSH headings : Animals; Anti-Infective Agents, Local / administration & dosage; Anti-Infective Agents, Local / therapeutic use; Cattle; Chlorhexidine / administration & dosage; Chlorhexidine / therapeutic use; Dose-Response Relationship, Drug; Drug Resistance, Bacterial / drug effects; Female; Iodine / administration & dosage; Iodine / therapeutic use; Mammary Glands, Animal / microbiology; Mastitis, Bovine / drug therapy; Mastitis, Bovine / microbiology; Mastitis, Bovine / prevention & control; Microbial Sensitivity Tests / veterinary; Staphylococcal Infections / drug therapy; Staphylococcal Infections / microbiology; Staphylococcal Infections / veterinary; Staphylococcus aureus / drug effects
TL;DR: The minimum inhibitory concentrations of iodine were determined for 37 isolates of Staph. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2012 journal article

Molecular epidemiology of Enterococcus cecorum isolates recovered from enterococcal spondylitis outbreaks in the southeastern United States

AVIAN PATHOLOGY, 41(5), 479–485.

By: L. Borst n , M. Suyemoto n, K. Robbins n, R. Lyman n, M. Martin n & H. Barnes n

MeSH headings : Animals; Case-Control Studies; Cecum / microbiology; Cecum / pathology; Chickens; Cluster Analysis; Disease Outbreaks / veterinary; Drug Resistance, Multiple, Bacterial; Electrophoresis, Gel, Pulsed-Field / veterinary; Enterococcus / genetics; Enterococcus / isolation & purification; Enterococcus / pathogenicity; Genetic Variation; Genotype; Gram-Positive Bacterial Infections / epidemiology; Gram-Positive Bacterial Infections / microbiology; Gram-Positive Bacterial Infections / veterinary; Male; Mannitol / metabolism; Molecular Epidemiology; Phenotype; Poultry Diseases / epidemiology; Poultry Diseases / microbiology; Southeastern United States / epidemiology; Spondylitis / epidemiology; Spondylitis / microbiology; Spondylitis / veterinary
TL;DR: Findings indicate that the increase in E. cecorum-associated disease in the southeast United States is due to the emergence of new clones with increased pathogenicity and multidrug resistance. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 journal article

Molecular epidemiology of Staphylococcus aureus mastitis in dairy heifers

JOURNAL OF DAIRY SCIENCE, 95(9), 4921–4930.

By: K. Anderson*, R. Lyman*, K. Moury*, D. Ray*, D. Watson  n & M. Correa

author keywords: Staphylococcus aureus; mastitis; heifer; molecular epidemiology
MeSH headings : Animals; Cattle; Colostrum / microbiology; Electrophoresis, Gel, Pulsed-Field / veterinary; Female; Genotype; Mammary Glands, Animal / microbiology; Mastitis, Bovine / microbiology; Milk / microbiology; Molecular Epidemiology; Staphylococcal Infections / microbiology; Staphylococcal Infections / veterinary; Staphylococcus aureus / genetics; Staphylococcus aureus / isolation & purification
TL;DR: It is concluded, based upon the finding of identical pulsed-field gel electrophoresis genotypes in flies, heifer body sites, and heifer colostrum samples, that flies and heifers body sites could be important sources of Staph. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Transmission of MRSA between Companion Animals and Infected Human Patients Presenting to Outpatient Medical Care Facilities

PLOS ONE, 6(11).

By: J. Ferreira n, K. Anderson n, M. Correa n, R. Lyman n, F. Ruffin *, L. Reller*, V. Fowler *

MeSH headings : Adolescent; Ambulatory Care; Animals; Animals, Domestic; Carrier State / microbiology; Carrier State / transmission; Case-Control Studies; Cat Diseases / microbiology; Cat Diseases / transmission; Cats; DNA, Bacterial / genetics; Dog Diseases / microbiology; Dog Diseases / transmission; Dogs; Humans; Methicillin Resistance; Methicillin-Resistant Staphylococcus aureus / genetics; Methicillin-Resistant Staphylococcus aureus / pathogenicity; Staphylococcal Infections / microbiology; Staphylococcal Infections / transmission
TL;DR: It is suggested that companion animals of MRSA-infected patients can be culture-positive for MRSA, representing a potential source of infection or re-infection for humans. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Transmission of Methicillin-Resistant Staphylococcus aureus between Human and Hamster

JOURNAL OF CLINICAL MICROBIOLOGY, 49(4), 1679–1680.

By: J. Ferreira  n, V. Fowler *, M. Correa n, R. Lyman n, F. Ruffin * & K. Anderson n

MeSH headings : Adult; Animals; Bacterial Proteins / genetics; Bacterial Typing Techniques; Carrier State / microbiology; Carrier State / transmission; Cricetinae; DNA, Bacterial / genetics; Electrophoresis, Gel, Pulsed-Field; Female; Humans; Male; Methicillin-Resistant Staphylococcus aureus / classification; Methicillin-Resistant Staphylococcus aureus / genetics; Methicillin-Resistant Staphylococcus aureus / isolation & purification; Molecular Typing; Nasal Mucosa / microbiology; Penicillin-Binding Proteins; Polymerase Chain Reaction; Rectum / microbiology; Rodent Diseases / microbiology; Rodent Diseases / transmission; Staphylococcal Infections / microbiology; Staphylococcal Infections / transmission; Staphylococcal Infections / veterinary; Zoonoses / microbiology; Zoonoses / transmission
TL;DR: It is newly document that the transmission of MRSA between human and hamster is possible and methicillin-resistant Staphylococcus aureus between humans and animals is increasingly recognized. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Proof of concept of a method that assesses the spread of microbial infections with spatially explicit and non-spatially explicit data

INTERNATIONAL JOURNAL OF HEALTH GEOGRAPHICS, 7.

By: A. Rivas n, K. Anderson n, R. Lyman n, S. Smith * & S. Schwager*

MeSH headings : Animals; Animals, Domestic; Cattle; Data Interpretation, Statistical; Disease Transmission, Infectious; Microbial Sensitivity Tests / statistics & numerical data; North Carolina / epidemiology; Staphylococcal Infections / epidemiology; Staphylococcal Infections / microbiology; Staphylococcal Infections / transmission; Staphylococcus aureus / isolation & purification
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Efficacy of vaccination and antimicrobial treatment to eliminate chronic intramammary Staphylococcus aureus infections in dairy cattle

Journal of the American Veterinary Medical Association, 228(3), 422–425.

By: G. Smith n , R. Lyman* & K. Anderson*

MeSH headings : Animals; Anti-Bacterial Agents / therapeutic use; Bacterial Vaccines / administration & dosage; Cattle; Chronic Disease; Clindamycin / administration & dosage; Clindamycin / analogs & derivatives; Clindamycin / therapeutic use; Dairying / methods; Female; Mastitis, Bovine / drug therapy; Mastitis, Bovine / microbiology; Mastitis, Bovine / prevention & control; Staphylococcal Infections / drug therapy; Staphylococcal Infections / microbiology; Staphylococcal Infections / prevention & control; Staphylococcal Infections / veterinary; Staphylococcus aureus / immunology; Treatment Outcome; Vaccination / veterinary
TL;DR: Results indicate that a combination of vaccination and antimicrobial treatment can be successful in eliminating some cases of chronic intramammary S aureus infections in dairy cattle. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, Crossref, NC State University Libraries
Added: August 6, 2018

2006 article

Genetic diversity and antimicrobial susceptibility profiles among mastitis-causing Staphylococcus aureus isolated from bovine milk samples

Anderson, K. L., Lyman, R. L., Bodeis-Jones, S. M., & White, D. G. (2006, July). AMERICAN JOURNAL OF VETERINARY RESEARCH, Vol. 67, pp. 1185–1191.

By: K. Anderson n, R. Lyman n, S. Bodeis-Jones n & D. White n

MeSH headings : Animals; Anti-Bacterial Agents / pharmacology; Cattle; Drug Resistance, Bacterial; Female; Genetic Variation; Mastitis, Bovine / microbiology; Microbial Sensitivity Tests; Milk / microbiology; Staphylococcal Infections / microbiology; Staphylococcal Infections / veterinary; Staphylococcus aureus / drug effects; Staphylococcus aureus / genetics
TL;DR: Antimicrobial resistance phenotypes were associated with particular S a Aureus PFGE types; this association may have implications for future treatment and control of S aureus-associated mastitis in cattle. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Long-term persistence of specific genetic types of mastitis-causing Staphylococcus aureus on three dairies

JOURNAL OF DAIRY SCIENCE, 89(12), 4551–4556.

By: K. Anderson n & R. Lyman n

author keywords: mastitis; Staphylococcus aureus; persistence; genotype
MeSH headings : Animals; Cattle; Dairying; Deoxyribonucleases, Type II Site-Specific; Electrophoresis, Gel, Pulsed-Field / veterinary; Female; Genotype; Mastitis, Bovine / microbiology; Milk / microbiology; Phylogeny; Staphylococcal Infections / microbiology; Staphylococcal Infections / veterinary; Staphylococcus aureus / genetics; Staphylococcus aureus / isolation & purification; Staphylococcus aureus / physiology; Time Factors
TL;DR: Pulsed-field gel electrophoresis after SmaI digestion was used to investigate the persistence of specific genotypes of bovine mammary gland isolates of Staphylococcus aureus on 3 dairy herds and mastitis-causing Staph. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Inactivation of penicillin G in milk using hydrogen peroxide

JOURNAL OF DAIRY SCIENCE, 88(2), 466–469.

By: W. Hanway n, A. Hansen n, K. Anderson n, R. Lyman n & J. Rushing n

author keywords: milk; penicillin; antibiotic; hydrogen peroxide
MeSH headings : Animals; Drug Residues / analysis; Food Handling / methods; Hot Temperature; Hydrogen Peroxide / administration & dosage; Hydrogen Peroxide / pharmacology; Milk / chemistry; Penicillin G / analysis; Penicillin G / antagonists & inhibitors
TL;DR: The 0.34% concentration of hydrogen peroxide was the most effective, inactivating penicillin G to a level well below the safe level of 5 ppb with the pasteurized heat treatment, with or without incubation. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Comparison of microbial receptor assay and liquid chromatography for determination of penicillin G and amoxicillin in milk powder

Journal of AOAC International, 85(3), 546–550.

By: K. Anderson & R. Lyman

Source: NC State University Libraries
Added: August 6, 2018

2002 journal article

Distribution of strains of Staphylococcus aureus isolated from milk of cows in North Carolina

Annual Meeting, National Mastitis Council, Inc, 41(2002), 233–234.

By: P. Smith, C. Spooner, R. Lyman, C. George, W. Kloos & K. Anderson

Source: NC State University Libraries
Added: August 6, 2018

1999 journal article

A preliminary survey of antibiotic residues and viable bacteria in milk from three Caribbean basin countries

JOURNAL OF FOOD PROTECTION, 62(2), 177–180.

By: R. Baynes n , R. Lyman*, K. Anderson* & C. Brownie*

MeSH headings : Animals; Anti-Bacterial Agents / analysis; Barbados; Colony Count, Microbial; Costa Rica; Dairying / standards; Drug Residues / analysis; Hydrogen-Ion Concentration; Jamaica; Lactams; Milk / chemistry; Milk / microbiology; Staphylococcus / isolation & purification; Staphylococcus aureus / isolation & purification
TL;DR: The presence of beta-lactam residues in some of these samples suggests the appropriateness of testing milk prior to processing for consumption, and indicates the presence of drug residues in milk may have public health implications. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

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