Dawn Logas - Academia.edu (original) (raw)
Papers by Dawn Logas
John Wiley & Sons, Ltd eBooks, Oct 25, 2013
John Wiley & Sons, Ltd eBooks, Jul 18, 2014
John Wiley & Sons, Ltd eBooks, Oct 25, 2013
Journal of The American Academy of Dermatology, Jun 1, 1998
joint. In the cited article,2 the figure shows a hand in the pronated position; however, in the a... more joint. In the cited article,2 the figure shows a hand in the pronated position; however, in the anatomic position the callus is on the lateral aspect of the finger.
Veterinary Dermatology, Dec 1, 1993
The object of this study was to evaluate the effectiveness of Evening Primrose Oil (EPO) liquid (... more The object of this study was to evaluate the effectiveness of Evening Primrose Oil (EPO) liquid (Efamol Vet; Guildford, U.K.) to decrease the signs of feline pruritic skin disease. Cats were accepted into the study if their dermatologic signs were related to probable flea allergy and/or atopy, their signs did not abate with increased flea control alone and they were not on any concurrent anti-inflammatory drugs or supplements. They were initially placed on 4 weeks of intense flea control then randomly in a double-blinded manner placed on either 8 weeks of EPO liquid or olive oil (control). Pruritus, erythema, self-trauma, alopecia and overall dermatologic condition were monitored and scored at 4-week intervals for the entire 12 weeks of study. The mean of each parameter for each group (EPO or olive oil) was compared to itself over time and to the other group using an analysis of variance with repeated measures. No significant difference (P cO.05) was noted over time or between groups for any of the five parameters.
Veterinary Dermatology, Jun 1, 1993
Decreased levels of total body zinc can lead to profound effects on both the immune and integumen... more Decreased levels of total body zinc can lead to profound effects on both the immune and integumentary systems. Unfortunately, accurate measurements of total body zinc are difficult because the mineral is ubiquitous in the environment and many endogenous and exogenous factors can falsely elevate or depress measurements. In man, various dermatologic and non-dermatologic diseases have been associated with low serum zinc levels. The objective of this study was to analyse by atomic absorption and compare the serum zinc levels of healthy dogs, dogs with non-dermatologic diseases, dogs with allergic skin diseases and dogs with other dermatologic diseases. Using the Student-Newman-Keuls test, no significant differences in the mean serum zinc levels were demonstrated among any of the four groups (P > 0.05).
John Wiley & Sons, Ltd eBooks, Oct 25, 2013
PubMed, 2010
In the past 5 years, the incidence of canine skin infections caused by resistant strains of Staph... more In the past 5 years, the incidence of canine skin infections caused by resistant strains of Staphylococcus (pseud)intermedius has increased. Many older antibiotics are used to treat these infections because the sensitivity can be demonstrated in vitro. Additionally, many of these older drugs are efficacious and unlikely to induce multidrug resistance. More than a decade ago, the antibiotic tylosin tartrate was reported to be efficacious in vitro and in vivo against Staphylococcus intermedius. The purpose of this study was to determine whether S. (pseud)intermedius isolated from untreated pyoderma cases at veterinary referral centers across the United States are sensitive in vitro to this antibiotic. Minimum inhibitory concentrations for tylosin tartrate and other commonly used antibiotics were determined for 103 isolates. Most (82.61%) of the isolates not exposed to antibiotics in the 3 months before submission were sensitive to tylosin tartrate. These findings suggest that tylosin tartrate warrants further study as a first-line option for the treatment of dogs initially presenting with pyoderma.
Journal of Feline Medicine and Surgery, Oct 1, 2003
This pilot study was to determine if early oral flea exposure reduces the incidence of flea aller... more This pilot study was to determine if early oral flea exposure reduces the incidence of flea allergy dermatitis (FAD) in cats. Eighteen kittens, assigned to three groups, received no flea exposure, oral flea exposure or flea infestation for 12 weeks. Then all the kittens were exposed continually to fleas for 31 weeks. Sensitization was monitored using intradermal testing (IDT), in vitro measurement of anti-flea saliva immunoglobulin E (IgE) and development of FAD. There was no statistically significant difference between groups in IDT reactions, in vitro data or clinical scores. The development of FAD was not associated with the presence of anti-flea saliva IgE. However, the development of a delayed reaction to flea bite was associated with symptoms after flea exposure. Although not statistically significant, the FAD scores in the oral group were lower than in the controls. Further studies are required to determine the role of oral flea exposure in the development of FAD in cats.
Veterinary Dermatology, Sep 1, 1994
The objective of this double-blinded crossover study was to examine the effects of marine oil sup... more The objective of this double-blinded crossover study was to examine the effects of marine oil supplementation with high-dose eicosapentaenoic acid (EPA) on canine pruritic skin disease. Sixteen dogs that completed this study had clinical signs related to idiopathic pruritus, confirmed atopy and/or flea allergy. Each dog was randomly placed on one omega-3 fatty acid capsule (MVP: Meridian Veterinary Products, St. Augustine, FL, U.S.A.) which contained 1 ml of marine oil (180 mg EPA and 120 mg DHA) or one capsule containing 1 ml of corn oil (570 mg linoleic acid and 50 mg gamma linolenic acid) per 4.55 kg of body weight q 24 h for 6 weeks. After a 3-week washout period in which no supplement was given, each subject was crossed over to the other supplement for an additional 6 weeks. Dogs receiving marine oil showed a significant improvement in pruritus (P < O.OOl), self-trauma (P < 0.05) and coat character (P <0.01) over time. When compared to the corn oil control over time, marine oil supplementation significantly improved pruritus (P < 0.02), alopecia (P < 0.05) and coat character (P < 0.001). This study demonstrates the effectiveness of high doses of marine oil as an alternative anti-inflammatory for canine pruritic skin disease.
Nottingham University Press eBooks, Jun 15, 2012
Food allergy is an uncommon and poorly understood disease in the horse. Symptoms can be gastroint... more Food allergy is an uncommon and poorly understood disease in the horse. Symptoms can be gastrointestinal, dermatologic, or both. The terminology itself is confusing. The term food allergy implies an immunologic reaction to an ingested substance. Not all food allergies are truly allergic in nature. A better term for the condition would be "adverse reactions to food." This designation includes immunologic and nonimmunologic reactions to food substances. Nonimmunologic food sensitivities include metabolic, pharmacologic, and idiosyncratic reactions. An example of this would be pruritus resulting from the histamine content of a food (e.g., mackerel or tuna), instead of from an allergic reaction to the food itself. Fortunately, clinical symptoms and treatment of immunologic and nonimmunologic food reactions are identical. Therefore, for the sake of simplicity, most clinicians use the term food allergy to indicate adverse reactions to food.
Journal of The American Animal Hospital Association, Aug 8, 2021
ABSTRACT The purpose of this retrospective study was to compare outcome measures in dogs treated ... more ABSTRACT The purpose of this retrospective study was to compare outcome measures in dogs treated by a primary care veterinarian (pcDVM) before referral and after seeking collaboration with a board-certified veterinary dermatologist (BCVD) for cases of severe recurrent chronic otitis externa. Medical records of 65 client-owned dogs were retrospectively reviewed, and data were obtained regarding treatment history, referral timeframe, recurrence rate, clinical signs, and resolution of signs. The median number of otitis recurrences while under the care of the pcDVM was 4 (range 1–40) versus collaborative BCVD care of 2 (P < .01). There was a longer median time to otitis recurrence with collaborative care (171 days) compared with dogs managed by the pcDVM before referral (21 days; P > .01). Proliferative changes in the ear canals improved in 41/45 (91%) of cases under BCVD care compared with 6/45 (13%) under care by the pcDVM (P < .01). Dogs with chronic otitis had better long-term outcomes when collaboration with a BCVD was pursued within 6 mo of treatment. Referral or consultation with a BCVD should be considered for cases of chronic canine otitis that are persistent or quickly recurrent (20–30 days) over a 6 mo period.
Veterinary Clinics of North America-small Animal Practice, Sep 1, 1994
Otitis externa can be a complicated and difficult disease to diagnose and treat. Because of the u... more Otitis externa can be a complicated and difficult disease to diagnose and treat. Because of the unique physiology of the ear canal and common pathophysiology of otitis externa regardless of the underlying cause, the clinician must rely on history, dermatologic examination, and ancillary tests to determine the cause and appropriate therapy for a particular case.
John Wiley & Sons, Ltd eBooks, Oct 25, 2013
John Wiley & Sons, Ltd eBooks, Jul 18, 2014
John Wiley & Sons, Ltd eBooks, Oct 25, 2013
Journal of The American Academy of Dermatology, Jun 1, 1998
joint. In the cited article,2 the figure shows a hand in the pronated position; however, in the a... more joint. In the cited article,2 the figure shows a hand in the pronated position; however, in the anatomic position the callus is on the lateral aspect of the finger.
Veterinary Dermatology, Dec 1, 1993
The object of this study was to evaluate the effectiveness of Evening Primrose Oil (EPO) liquid (... more The object of this study was to evaluate the effectiveness of Evening Primrose Oil (EPO) liquid (Efamol Vet; Guildford, U.K.) to decrease the signs of feline pruritic skin disease. Cats were accepted into the study if their dermatologic signs were related to probable flea allergy and/or atopy, their signs did not abate with increased flea control alone and they were not on any concurrent anti-inflammatory drugs or supplements. They were initially placed on 4 weeks of intense flea control then randomly in a double-blinded manner placed on either 8 weeks of EPO liquid or olive oil (control). Pruritus, erythema, self-trauma, alopecia and overall dermatologic condition were monitored and scored at 4-week intervals for the entire 12 weeks of study. The mean of each parameter for each group (EPO or olive oil) was compared to itself over time and to the other group using an analysis of variance with repeated measures. No significant difference (P cO.05) was noted over time or between groups for any of the five parameters.
Veterinary Dermatology, Jun 1, 1993
Decreased levels of total body zinc can lead to profound effects on both the immune and integumen... more Decreased levels of total body zinc can lead to profound effects on both the immune and integumentary systems. Unfortunately, accurate measurements of total body zinc are difficult because the mineral is ubiquitous in the environment and many endogenous and exogenous factors can falsely elevate or depress measurements. In man, various dermatologic and non-dermatologic diseases have been associated with low serum zinc levels. The objective of this study was to analyse by atomic absorption and compare the serum zinc levels of healthy dogs, dogs with non-dermatologic diseases, dogs with allergic skin diseases and dogs with other dermatologic diseases. Using the Student-Newman-Keuls test, no significant differences in the mean serum zinc levels were demonstrated among any of the four groups (P > 0.05).
John Wiley & Sons, Ltd eBooks, Oct 25, 2013
PubMed, 2010
In the past 5 years, the incidence of canine skin infections caused by resistant strains of Staph... more In the past 5 years, the incidence of canine skin infections caused by resistant strains of Staphylococcus (pseud)intermedius has increased. Many older antibiotics are used to treat these infections because the sensitivity can be demonstrated in vitro. Additionally, many of these older drugs are efficacious and unlikely to induce multidrug resistance. More than a decade ago, the antibiotic tylosin tartrate was reported to be efficacious in vitro and in vivo against Staphylococcus intermedius. The purpose of this study was to determine whether S. (pseud)intermedius isolated from untreated pyoderma cases at veterinary referral centers across the United States are sensitive in vitro to this antibiotic. Minimum inhibitory concentrations for tylosin tartrate and other commonly used antibiotics were determined for 103 isolates. Most (82.61%) of the isolates not exposed to antibiotics in the 3 months before submission were sensitive to tylosin tartrate. These findings suggest that tylosin tartrate warrants further study as a first-line option for the treatment of dogs initially presenting with pyoderma.
Journal of Feline Medicine and Surgery, Oct 1, 2003
This pilot study was to determine if early oral flea exposure reduces the incidence of flea aller... more This pilot study was to determine if early oral flea exposure reduces the incidence of flea allergy dermatitis (FAD) in cats. Eighteen kittens, assigned to three groups, received no flea exposure, oral flea exposure or flea infestation for 12 weeks. Then all the kittens were exposed continually to fleas for 31 weeks. Sensitization was monitored using intradermal testing (IDT), in vitro measurement of anti-flea saliva immunoglobulin E (IgE) and development of FAD. There was no statistically significant difference between groups in IDT reactions, in vitro data or clinical scores. The development of FAD was not associated with the presence of anti-flea saliva IgE. However, the development of a delayed reaction to flea bite was associated with symptoms after flea exposure. Although not statistically significant, the FAD scores in the oral group were lower than in the controls. Further studies are required to determine the role of oral flea exposure in the development of FAD in cats.
Veterinary Dermatology, Sep 1, 1994
The objective of this double-blinded crossover study was to examine the effects of marine oil sup... more The objective of this double-blinded crossover study was to examine the effects of marine oil supplementation with high-dose eicosapentaenoic acid (EPA) on canine pruritic skin disease. Sixteen dogs that completed this study had clinical signs related to idiopathic pruritus, confirmed atopy and/or flea allergy. Each dog was randomly placed on one omega-3 fatty acid capsule (MVP: Meridian Veterinary Products, St. Augustine, FL, U.S.A.) which contained 1 ml of marine oil (180 mg EPA and 120 mg DHA) or one capsule containing 1 ml of corn oil (570 mg linoleic acid and 50 mg gamma linolenic acid) per 4.55 kg of body weight q 24 h for 6 weeks. After a 3-week washout period in which no supplement was given, each subject was crossed over to the other supplement for an additional 6 weeks. Dogs receiving marine oil showed a significant improvement in pruritus (P < O.OOl), self-trauma (P < 0.05) and coat character (P <0.01) over time. When compared to the corn oil control over time, marine oil supplementation significantly improved pruritus (P < 0.02), alopecia (P < 0.05) and coat character (P < 0.001). This study demonstrates the effectiveness of high doses of marine oil as an alternative anti-inflammatory for canine pruritic skin disease.
Nottingham University Press eBooks, Jun 15, 2012
Food allergy is an uncommon and poorly understood disease in the horse. Symptoms can be gastroint... more Food allergy is an uncommon and poorly understood disease in the horse. Symptoms can be gastrointestinal, dermatologic, or both. The terminology itself is confusing. The term food allergy implies an immunologic reaction to an ingested substance. Not all food allergies are truly allergic in nature. A better term for the condition would be "adverse reactions to food." This designation includes immunologic and nonimmunologic reactions to food substances. Nonimmunologic food sensitivities include metabolic, pharmacologic, and idiosyncratic reactions. An example of this would be pruritus resulting from the histamine content of a food (e.g., mackerel or tuna), instead of from an allergic reaction to the food itself. Fortunately, clinical symptoms and treatment of immunologic and nonimmunologic food reactions are identical. Therefore, for the sake of simplicity, most clinicians use the term food allergy to indicate adverse reactions to food.
Journal of The American Animal Hospital Association, Aug 8, 2021
ABSTRACT The purpose of this retrospective study was to compare outcome measures in dogs treated ... more ABSTRACT The purpose of this retrospective study was to compare outcome measures in dogs treated by a primary care veterinarian (pcDVM) before referral and after seeking collaboration with a board-certified veterinary dermatologist (BCVD) for cases of severe recurrent chronic otitis externa. Medical records of 65 client-owned dogs were retrospectively reviewed, and data were obtained regarding treatment history, referral timeframe, recurrence rate, clinical signs, and resolution of signs. The median number of otitis recurrences while under the care of the pcDVM was 4 (range 1–40) versus collaborative BCVD care of 2 (P < .01). There was a longer median time to otitis recurrence with collaborative care (171 days) compared with dogs managed by the pcDVM before referral (21 days; P > .01). Proliferative changes in the ear canals improved in 41/45 (91%) of cases under BCVD care compared with 6/45 (13%) under care by the pcDVM (P < .01). Dogs with chronic otitis had better long-term outcomes when collaboration with a BCVD was pursued within 6 mo of treatment. Referral or consultation with a BCVD should be considered for cases of chronic canine otitis that are persistent or quickly recurrent (20–30 days) over a 6 mo period.
Veterinary Clinics of North America-small Animal Practice, Sep 1, 1994
Otitis externa can be a complicated and difficult disease to diagnose and treat. Because of the u... more Otitis externa can be a complicated and difficult disease to diagnose and treat. Because of the unique physiology of the ear canal and common pathophysiology of otitis externa regardless of the underlying cause, the clinician must rely on history, dermatologic examination, and ancillary tests to determine the cause and appropriate therapy for a particular case.