| the effect of exposure to mites, psoroptes ovis (acarina: psoroptidae), on calves of varying susceptibility to common scabies. | | 1979 | 298927 |
| the scabies mite revisited, correctly. | | 1979 | 457330 |
| diagnosis of human scabies by epidermal shave biopsy. | a superficial shave biopsy is described as a simple, essentially painless, more reliable method for the demonstration of the scabies mite, eggs, and feces in human skin. | 1979 | 512081 |
| precipitating antibodies in cattle infested by psoroptes ovis (acarina: psoroptidae). | | 1977 | 606812 |
| sancassania sp. (acarina: acaridae) superimposed upon scabs of psoroptes ovis (acarina: psoroptidae) on a hereford heifer in new mexico. | | 1978 | 660392 |
| evaluation of phosmet for the control of the common scabies mite on cattle. | thirty-four young range cattle heavily infested with the common scabies mite, psoroptes ovis, were dipped in phosmet (o,o-dimethyl phosphorodithioate s-ester with n-(mercaptomethyl)phthalimide) in 15 trials. all concentrations from 0.15% to 0.25% that were applied once failed in at least one trial, but all concentrations from 0.075% to 0.20% were successful in eradicating mites when used twice at 7- to 10-day intervals. one single dip tried at 0.30% also was successful. uninfested yearlings were ... | 1978 | 711605 |
| a new outbreak of sheep scab (psoroptes ovis) in lesotho and the measures taken to control it. | psoroptic mange in sheep was reintroduced to lesotho in 1975. the course of the disease outbreak, the problems encountered in attempting to limit its spread and the eventual introduction of a simultaneous dipping policy backed by legislation are described. | 1978 | 746586 |
| the infectivity of scabies (mange) mites, psoroptes ovis (acarina: psoroptidae), to sheep in naturall contaminated enclosures. | | 1977 | 877423 |
| field efficacy of injectable and pour-on moxidectin in cattle naturally infested with psoroptes ovis (acarina: psoroptidae). | field efficacy of moxidectin, a macrocyclic lactone endectocide, was evaluated in cattle naturally infested with psoroptes ovis. three groups of six animals were used based on parasitological and clinical status. group 1 animals received one subcutaneous injection of injectable moxidectin at 0.2 mg kg-1 body weight; group 2 animals received topically one dose of 0.5 mg kg-1 body weight of pour-on moxidectin; group 3 individuals remained untreated as controls. efficacy was assessed by (a) taking ... | 1992 | 1485416 |
| treatment and control of sheep scab (psoroptes ovis) with ivermectin under field conditions in south africa. | four trials including 11,266 sheep were conducted in south africa to evaluate the efficacy of the systemic parasiticide ivermectin against field outbreaks of sheep scab (psoroptes ovis) when two doses of approximately 200 micrograms/kg were administered subcutaneously seven days apart (days 0 and 7). as sheep scab is a notifiable disease in south africa, it was not possible to include an untreated control group. the prevalence of clinically affected animals in the four treated flocks varied from ... | 1992 | 1496769 |
| field efficacy of flumethrin pour-on against psoroptes ovis in cattle. | the field efficacy of pour-on formulation of flumethrin 1 per cent was assessed in cattle naturally infested with psoroptes ovis. in a finishing unit, 18 infested animals were selected, left untreated for one month and examined twice to monitor the progress of the infestation. they were treated twice 10 days apart with a pour-on formulation of flumethrin 1 per cent (2 mg/kg bodyweight). skin samples were collected from the animals on days 0, 7, 14, 28 and 42 and examined for the presence of live ... | 1992 | 1529505 |
| crusted scabies in acquired selective iga deficiency. | crusted scabies, an unusual clinical variant of human scabies mite infestation, is usually reported in cases of gross debility, mental deficiency, or immunosuppression. we report here the occurrence of crusted scabies in a 40-year-old man with acquired selective iga deficiency suspected to be caused by long-term medication with phenytoin for epilepsy. | 1991 | 1678232 |
| cross-antigenicity between the scabies mite, sarcoptes scabiei, and the house dust mite, dermatophagoides pteronyssinus. | this study demonstrated that antigens of the parasitic mite sarcoptes scabiei (ss) cross-react with antigens of the house dust mite dermatophagoides pteronyssinus (dp). crossed immunoelectrophoresis (cie) reaction of ss extract with rabbit anti-dp serum resulted in multiple immunoprecipitates. reciprocal cie reactions gave similar results. immunoprecipitates from both reactions bound ige in the sera of dust-mite-sensitive patients who had no history of scabies. sodium dodecyl sulfate-polyacrylam ... | 1991 | 1705952 |
| scabies in the extended care facility. revisited. | infestations with sarcoptes scabiei var hominis remain a problem in nursing home patients. while the traditional signs of scabies include burrows and red papules found on the fingerwebs, chest, waist, or genitalia, the elderly or infirm patient may have only a nonspecific pruritic eruption. epidemics in skilled care facilities may be controlled and the scabies mite even eradicated from the institutions with appropriate diagnosis and adequate treatment of both patients and personnel and their con ... | 1991 | 1955223 |
| failure of a single treatment with ivermectin to control sheep scab (psoroptes ovis) on artificially infested sheep. | ivermectin at 200 micrograms/kg bodyweight given either as a single subcutaneous injection or as an oral drench failed to eradicate psoroptes ovis from artificially infested sheep. the oral drench reduced the mite populations by 43 per cent within 24 hours but no further significant decline was recorded over 38 days. the subcutaneous injection reduced the mite populations by 90 per cent after 10 days but live p ovis were present on all the treated animals 84 days after treatment. the efficacy of ... | 1991 | 2035216 |
| a technique for quantitative evaluation of ectoparasitic mites and insects of domestic animals. | a modified koh dissolution technique using tween 80 has been developed for the diagnosis and quantitative evaluation of ectoparasitic mites and insects of veterinary importance. fifty intact skin segments from ten different domestic animals were artificially inoculated in vitro with ten specimens each of the mites sarcoptes scabiei, chorioptes bovis, psoroptes ovis and demodex caprae and insects haematopinus eurysternus and bovicola bovis. sixty-seven to 88% of the mites and 80-99% of the insect ... | 1990 | 2121422 |
| preliminary trials using a macrocyclic lactone against psoroptic scabies of cattle. | a macrocyclic lactone, ll-f28249 alpha, c36h52o8, was evaluated as a one- or two-injection treatment in different formulations and concentrations against cattle infested with psoroptes ovis (hering). one injection of 2 mg kg-1 or two injections of 1 mg kg-1 of 3% active material in either an aqueous or oil formulation failed to eliminate all of the mites. a single injection of 3 mg kg-1 as a 5% aqueous formulation eliminated all mites for 35 days post-injection. at lower dosages of the aqueous f ... | 1990 | 2316174 |
| cross-reactivity between the house dust mite dermatophagoides pteronyssinus and the mange mites psoroptes cuniculi and p. ovis. i. demonstration of antibodies to the house dust mite allergen dpt 12 in sera from p. cuniculi-infested rabbits. | the cross-reactivity of the mange mites psoroptes cuniculi (pc) and psoroptes ovis (po) antigens with the house dust mite dermatophagoides pteronyssinus (dp) antigens has been studied. cross-reactivity between mange mite and house dust mite antigens was demonstrated by both elisa and immunoelectrophoresis by use of a sheep anti-dp antiserum. both pc and po were demonstrated to contain eight cross-reacting antigens. sera from rabbits infested with pc were demonstrated to produce antibodies to the ... | 1986 | 2426321 |
| lipid ingestion from sheep epidermis by psoroptes ovis (acari: psoroptidae). | skin biopsies from three groups of sheep infested with psoroptes ovis were cryofixed in liquid nitrogen to preserve outer epidermis with its lipid. from one group of five sheep (group a), biopsies were taken from relatively healthy skin near the edge of scab lesions where mites had congregated. frozen vertical sections from these biopsies were stained with oil red o and haematoxylin before mounting. red lipid globules were plentiful within the body cavity of sectioned mites, but ingested lipid c ... | 1989 | 2472699 |
| pathogenesis of psoroptic scabies in hereford heifer calves. | hereford heifer calves were experimentally infested with psoroptes ovis. histologic examination of skin specimens was conducted at weekly intervals before and after treatment with ivermectin on postinfestation week 7. electron microscopy revealed numerous degranulating mast cells in the skin of infested but not in control calves. many active, as well as degenerate, neutrophils were in the scab on infested calves. microscopic epidermal ulcers developed on infested calves when live mites were pres ... | 1989 | 2712430 |
| efficacy of ivermectin against mange and gastrointestinal nematodes of buffalo (bubalus bubalis). | the incidence of mange in dairy buffalo in india has increased significantly in recent years. the authors record an outbreak of mange affecting a dairy herd stocking about 30,000 buffalo and 1000 cows. the mange mites were either sarcoptes scabiei or psoroptes ovis, or a mixed infestation of both. the morbidity rate was 5-30% varying from group to group, with 100% in a severely affected group. signs noticed were progressive dermatitis, alopecia, keratinization, skin thickened and wrinkled, inten ... | 1989 | 2741301 |
| dexamethasone-induced bovine t-lymphocyte suppression and the effect upon susceptibility to sheep scab mite (acari: psoroptidae) infestation. | the synthetic glucocorticoid dexamethasone was used to suppress bovine t-lymphocyte function. dexamethasone-treated animals were challenged with psoroptes ovis (hering) to determine if the immunosuppressive treatment would normalize susceptibility to infestation. dexamethasone suppressed t-lymphocyte function and anti-p. ovis antibody production, and delayed the onset of scab lesions. all animals were not equally susceptible to infestation as a result of dexamethasone treatment. these data furth ... | 1989 | 2784453 |
| can androgen deficiency promote an outbreak of psoroptic mange mites in male deer? | repeated outbreaks of infection by psoroptic mange mites (psoroptes equi var. ovis) affecting most regions of the body and legs were observed in several male white-tailed deer (odocoileus virginianus) suffering from hypoandrogenism (e.g., castrates, animals treated with antiandrogens or postprime). the massive infection was characterized by a severe alopecia and skin inflammation and began usually in early winter. one or two spray treatments of a 1% solution of lindane was usually sufficient to ... | 1989 | 2810569 |
| control of cattle mange in southern africa using ivermectin. | seven trials including 768 cattle were conducted in south africa and namibia to evaluate the efficacy of the systemic parasiticide ivermectin when administered subcutaneously at a dose rate of 200 micrograms/kg against sarcoptic (sarcoptes scabiei var. bovis), chorioptic (chorioptes bovis) and psoroptic (psoroptes ovis var. bovis) mange mites. the efficacy of a single treatment against psoroptes and sarcoptes was greater than against chorioptes. there was marked clinical cure in all treated case ... | 1987 | 3114930 |
| lipid layers in dermal vesicles of sheep scab. | surveys of vertical frozen skin sections from lesions of sheep inoculated with psoroptes ovis revealed new aspects of scab histopathology, particularly lipid layers adherent to epidermis forming beneath dermal vesicles. | 1988 | 3209758 |
| haematological and immunological response of unrestrained cattle to psoroptes ovis, the sheep scab mite. | cows were infected twice with 600 and 500 nymphs and adults of a bovine strain of psoroptes ovis with a nine-week interval. the haematological response and the non-specific mitogen- and antigen-induced responsiveness of the peripheral blood lymphocytes of the animals was followed. dermal reactivity to p ovis antigen injection was studied five weeks after reinfection. after the first infection with 600 mites none of the infected animals developed clinical psoroptic mange but a leucocytosis develo ... | 1988 | 3387672 |
| comparison of cryofixation methods for skin biopsies from sheep infested with psoroptes ovis (acari: psoroptidae). | two methods of cryofixing skin samples from sheep infested with psoroptes ovis were compared. in one method the skin biopsy was placed in a capped vial before immersion, while the other allowed direct contact with liquid nitrogen. no statistically significant differences were found between the cryofixation methods with regard to location of p. ovis sections or engaged mouthparts. direct contact with liquid nitrogen is recommended as the preferred method for cryofixing epidermal feeding ectoparas ... | 1988 | 3388743 |
| development and decline of serum antibody activity to psoroptes ovis antigens in infested cattle in an endemic and nonendemic scabies area of texas. | the serum antibody activity to psoroptes ovis antigens, as determined by enzyme-linked immunosorbent assay (elisa), was monitored during the development and decline phase of scabies in cattle herds under feedlot conditions in an endemic (bushland) and a nonendemic (kerrville) scabies area of texas. the infestations were initiated by exposing six calves in each of the herds to p. ovis and allowing the infestations to spread to other members of the herd. the cattle in the endemic area developed mo ... | 1986 | 3451865 |
| humoral and cellular immunoresponsiveness of stanchioned cattle infested with psoroptes ovis. | bovine scabies in a clinical problem during the cool autumn and cold winter months. in south texas it is necessary to stanchion animals in order to elicit patent infestation during summer months. environmental factors and grooming have been purported to account for summer resistance to infestation. however, stanchioned animals exhibit varied levels of susceptibility to infestation, suggesting that the noted variability may be influenced by the host immune response. in this study, animals were in ... | 1986 | 3491458 |
| influence of psoroptes ovis on the energy metabolism of heifer calves. | to determine the effect of psoroptes ovis on the energy metabolism of heifers, 32 calves were randomly assigned to four treatments in a 2 x 2 factorial arrangement. calves were fed the same diet at two intake levels, high or low, and were either infested or were not infested with p. ovis mites. calves were housed in antigrooming stanchions. body composition was determined by urea dilution on days 0 and 63. ration digestibility was determined on fecal grab samples using acid-insoluble ash as a ma ... | 1987 | 3564357 |
| infestivity of psoroptes ovis on ivermectin-treated cattle. | psoroptes ovis was not transmitted by natural contact to susceptible cattle which were exposed to infested, ivermectin-treated cattle 6, 12, 14, 16, and 18 days after treatment was given. however, clinical scabies did develop in 2 calves naturally exposed to p ovis-infested, ivermectin-treated calves at 10 days after treatment was given subcutaneously (200 micrograms/kg). psoroptes ovis was transmitted to stanchioned cattle manually exposed to 200 to 300 ml of hair and skin scrapings from infest ... | 1987 | 3565886 |
| reproductive success of psoroptes ovis (acari: psoroptidae) on hereford calves with a previous infestation of psoroptic mites. | | 1987 | 3625717 |
| enzyme-linked immunosorbent assay for the detection of antibodies to the sheep scab mite psoroptes ovis. | an enzyme-linked immunosorbent assay has been shown to detect antibodies in the circulation of sheep infected with psoroptes ovis. strong positive reactions were obtained from 19 sheep with four-month-old infections. no cross reaction was observed with sera obtained from sheep infected with either fasciola hepatica, nematodirus battus, ostertagia circumcincta or damalinia ovis. | 1987 | 3628981 |
| vacuum sampling for psoroptes ovis (acari: psoroptidae). | | 1987 | 3669033 |
| bone marrow response in cattle with chronic dermatitis caused by psoroptes ovis. | six hereford heifer calves were infested with psoroptes ovis and compared to six uninfested control calves. infested calves developed severe exudative dermatitis which covered 100% of the body surface by 7 weeks after infestation. they developed moderate nonregenerative anemia, decreased numbers of neutrophils and lymphocytes, and increased plasma protein and fibrinogen concentrations. sternal marrow core biopsies taken 7 weeks after infestation were 75 to 90% cellular, while cores from uninfest ... | 1987 | 3672801 |
| hematology in the regressive phase of bovine psoroptic scabies. | hereford calves were infested with psoroptes ovis. hemograms were evaluated weekly for 7 weeks during progressively extensive dermatitis and compared to uninfested control calves. calves were treated with ivermectin and weekly hemograms were compared for 4 weeks during regression of clinical disease. they developed extensive dermatitis and marked decreases in total white blood cells, neutrophils, and lymphocytes. infested calves also had moderate anemia, increased plasma proteins, and increased ... | 1987 | 3672802 |
| control of psoroptic scabies of cattle with fenvalerate. | fenvalerate [cyano(3-phenoxyphenyl)methyl-4-chloro-alpha-(1-methylethyl) benzene acetate] was evaluated as a one- or two-dip treatment at two different concentrations against cattle infested with psoroptes ovis (hering). one or two dips at 0.025% or one dip at 0.05% failed to eliminate p. ovis; two dips in fenvalerate at 0.05% provided complete elimination of all mites. fenvalerate was equally effective against male, female, and immature mites, but did not exhibit ovicidal properties. | 1986 | 3727344 |
| systemic pathologic responses in experimental psoroptes ovis infestation of hereford calves. | nine hereford calves were infested with psoroptes ovis and were allowed to develop clinical mange during a 9-week period. blood, serum, and urine samples were obtained before and after calves were infested and were compared with those from 3 noninfested control calves. all calves were euthanatized and necropsied 9 weeks after they were infested. gross and microscopic anatomic changes occurred only in the skin. calves developed typical exudative dermatitis, the extent of which was dependent on po ... | 1986 | 3729135 |
| dermatopathology and immunity in experimental psoroptes ovis (acari:psoroptidae) infestation of naive and previously exposed hereford cattle. | naive and previously exposed young hereford cattle were infested with psoroptes ovis and maintained in stanchions for 7 weeks. skin biopsy samples were examined at 1, 2, 5, and 7 weeks after infestation was induced, compared with those from noninfested control calves, and correlated with changes in the mite populations and development of dermatitis. gross and microscopic appearance of lesions were qualitatively similar in both groups of infested calves. the lesions occurred early in the previous ... | 1986 | 3740624 |
| comparative efficacy of injection routes and doses of ivermectin against psoroptes in rabbits. | rabbits infested with psoroptes ovis (hering) or with p cuniculi (delafond) were injected im or subcutaneously with ivermectin or with vehicle. a single injection of ivermectin (200 micrograms/kg) either im or subcutaneously was inadequate to eliminate all mites in the ears of the rabbits. however, a single injection of ivermectin at 400 micrograms/kg, regardless of the route of injection, eliminated all p cuniculi mites, but eliminated p ovis mites in only 50% of the rabbits. ivermectin was mor ... | 1985 | 3838867 |
| psoroptes ovis (acarina: psoroptidae) in a rocky mountain bighorn sheep (ovis canadensis canadensis) in idaho. | | 1985 | 3841164 |
| [the longevity of mites of the species psoroptes ovis, psoroptes cuniculi and chorioptes bovis separate from the host]. | | 1985 | 3891299 |
| serum ige antibodies to the scabies mite. | porcine scabies mites, sarcoptes scabiei var. suis are more readily available in sufficient quantities than are human scabies mites. circulating ige antibodies specific to porcine scabies mites were found in 6 (30%) of 20 scabies patients with an rast score of at least 2. seven patients had elevated serum total ige levels. correlation between the rast values, the duration of pruritus, and the ige levels was not found. the results do not prove the existence of antibodies specific to porcine scabi ... | 1985 | 3926663 |
| some observations on the biology and control of the sheep scab mite psoroptes ovis (hering) in britain. | sheep scab was eradicated from britain in 1952 but reappeared in 1973. the host specificity of the sheep scab mite is discussed; sheep are the only reservoir of the disease in britain. control is by single dipping in the approved acaricides, hch, diazinon or propetamphos. acaricides are approved only if the minimum use rate (maintenance level) will give at least 4 weeks' protection. the method of testing is described. traditionally, compulsory dipping has been in the winter when the disease is m ... | 1985 | 4082452 |
| acaricidal treatments for protection of sheep against psoroptes ovis. | | 1971 | 4100508 |
| evaluation of acaricidal dips for control of psoroptes ovis on sheep. | | 1967 | 4167754 |
| precipitating antibodies in sheep infested with psoroptes ovis (acarina: psoroptidae), the sheep scab mite. | | 1972 | 4629832 |
| chloropyridyl phosphorothioate insecticide as dip and spray: efficacy against psoroptes ovis, dermal toxicity for domesticated animals, selective carryout, and stability in the dipping vat. | | 1970 | 5505143 |
| efficacy of coumaphos against psoroptes ovis. | | 1966 | 5950512 |
| serum ige antibodies to scabies mite. | | 1981 | 6173998 |
| effects of psoroptes ovis (acarina:psoroptidae) on certain biochemical constituents of cattle serum. | sera from psoroptes ovis-infested calves were examined for 17 selected biochemical constituents to determine if p. ovis caused changes in any of these constituents. in order to recognize a scabies effect, there had to be a statistically significant (p less than or equal to 0.10) scabies exposure x time interaction and the changes in the biochemical constituents should have been correlated with the changes in the mite infestation. five serum biochemical constituents fulfilled these criteria. tota ... | 1982 | 6187118 |
| lepromatous leprosy in man; depth of the cellular infiltrate and bacillary mass in relation to the possibility of transmission of leprosy by biting arthropods. | in order to further define the possible role of arthropods in the transmission of leprosy, the depth of the cellular infiltrate and bacillary mass in the skin of patients with untreated lepromatous leprosy was measured, and this was related to the depth of penetration of the mouthparts of some species of arthropods of medical importance. the results confirmed that large numbers of bacilli are readily available to the biting apparatus of several species of arthropods, but not to that of the scabi ... | 1983 | 6349561 |
| in vitro feeding of psoroptes ovis (acari:psoroptidae). | an in vitro feeding test is described for psoroptes ovis. the criterion for feeding response was established on the basis of coloration of mites by a red dye or by red blood cells. feeding response was about 85% for female mites held off host cattle for 1 day. mites preferred water plasma or serum and low-salt diets over whole blood. feeding response was detected within 5 min of exposure to the diet, and maximum response was observed within 30 min of contact. mites ingested an average 0.29 micro ... | 1984 | 6543045 |
| development and transmission of psoroptic mange of cattle in feed lots in endemic and non-endemic regions. | a test was begun in november 1982 to evaluate the development of psoroptes ovis, the severity of psoroptic mange of cattle, and the incidence of transfer of p. ovis from artificially infested cattle to non-infested cattle held in feed lots in either an endemic (bushland, tx) or non-endemic region (kerrville, tx). the 2 herds each consisted of 24 hereford steers. the 24 steers were randomly assigned to 3 pens of 8 steers per pen. two steers from each pen that were randomly selected were artificia ... | 1984 | 6543046 |
| infestation potential of psoroptes ovis (hering) from cattle injected with ivermectin. | cattle scabies mites, psoroptes ovis (hering), surviving on cattle injected subcutaneously with ivermectin were capable of infesting to unprotected cattle 3, 5, 7, and 9 days after injection. all recipient cattle exposed to mites from vehicle-injected cattle developed reproductive colonies in 5 weeks. all recipient cattle exposed to mites from ivermectin-injected cattle at 3 and 5 days after injection developed reproductive colonies in 5 weeks. by 8 weeks, 3 of 4 and 2 of 4 recipient cattle expo ... | 1984 | 6546842 |
| effect of ivermectin in heifers on mortality and egg production of psoroptes ovis. | ten stanchioned heifers, heavily infested with psoroptes ovis (hering), were each given a single subcutaneous injection of 200 micrograms of ivermectin/kg. another 10 heavily infested heifers (stanchioned) were injected subcutaneously with the solvent system (vehicle) used to formulate the ivermectin. treatment with the vehicle did not reduce mite populations or total egg counts. the 10 heifers treated with ivermectin had an immediate reduction in live mite and egg counts (an increase in the per ... | 1984 | 6548616 |
| cross-mating studies with psoroptes ovis (hering) and psoroptes cuniculi delafond (acarina: psoroptidae). | reciprocal cross-matings of psoroptes ovis and p. cuniculi occurred and produced viable offspring through the f2 generation. hybrids of these crosses were infective to both rabbits and cattle. mean lengths of the male l4 setae of the parental species differed significantly from each other as well as from those of the hybrid males. these data show that p. ovis and p. cuniculi are not reproductively isolated. because viable, fertile hybrids are produced, cross-matings of p. ovis and p. cuniculi ar ... | 1983 | 6631638 |
| psoroptic scabies in desert bighorn sheep (ovis canadensis nelsoni) from northwestern arizona. | scabies due to infestation by psoroptes ovis was monitored from 1979 through 1981 in nelson's desert bighorn sheep in northwestern arizona. visual examinations for ear lesions and evaluations of ear scrapings were used to assess the prevalence of mites in sheep that were live-captured or killed during the hunting season. the prevalence of psoroptic scabies in live-captured sheep for the years 1979, 1980, and 1981, was 25%, 25%, and 0%, respectively, and was higher in rams (1979, 65%; 1980, 100%) ... | 1983 | 6644933 |
| development of serum antibody activity as determined by enzyme-linked immunosorbent assay to psoroptes ovis (acarina:psoroptidae) antigens in cattle infested with p. ovis. | calves infested with psoroptes ovis (hering, 1838) for the first time (naive) or previously infested calves were examined for serum antibody activity to p. ovis (obtained from rabbits) antigens by enzyme-linked immunosorbent assay (elisa) to determine the temporal appearance of specific serum antibody activity. the development of the serum antibody activity to p. ovis antigens was then correlated with the development of lesions (% scab) and with changes in the number of p. ovis. the serum antibo ... | 1983 | 6686389 |
| preliminary evaluation of ivermectin for control of psoroptes ovis in desert bighorn sheep. | | 1983 | 6687742 |
| influence of psoroptes ovis (hering) (acari: psoroptidae) on the performance of beef steers. | | 1984 | 6747079 |
| the burrow ink test and the scabies mite. | | 1981 | 6787101 |
| [life cycle of scabies mite (sarcoptes scabiei var. hominis) studied by scanning electron microscopy (author's transl)]. | the life history of the sarcoptes scabiei var. hominis has been studied with a scanning electron microscope on crusts of a patient with hyperkeratotic (norwegian) scabies, eggs, embedded in an amorphous material, are laid in tiers on the parakeratotic floor of the burrow. once larval maturation has been completed, eggs are cut out from inside and the larvae leave the shells which remain attached to the neighbouring corneocytes. the moults are easily recognized and give us a view on the hidden fa ... | 1981 | 6789755 |
| host-parasite relationships in hyperkeratotic (norwegian) scabies: pathological and immunological findings. | the dynamics of intraepidermal penetration of the scabies mite and the host's responses to the invaders have been studied in hyperkeratotic scabies. contrary to the generally accepted view, the mites progressed not only through the stratum corneum but also into the underlying epidermis and even occasionally to the dermo-epidermal interface. morphological evidence of reactive processes included parakeratosis surrounding the burrows, psoriasiform hyperplasia with increased basal cell labelling ind ... | 1981 | 6797458 |
| feeding behaviour of psoroptes ovis. | | 1983 | 6836888 |
| systemic activity of nifluridide against sucking lice and the common scabies mite on cattle. | psoroptes ovis [hering] mites and sucking lice (linognathus vituli linnaeus) were eliminated from light to heavily infested calves with a single subcutaneous injection of nifluridide in five separate experiments. the compound was incorporated in a copolymer vehicle in a sesame oil suspension. in the first two experiments, mites were eliminated within 10 days following a 20 mg kg-1 injection. eight out of 9 calves were cleared of mites within 7 days post injection of nifluridide at 4, 6 and 9 mg ... | 1982 | 6891855 |
| control of psoroptic scabies on calves with ivermectin. | eleven hereford or angus-cross calves slightly to severely infested with common scabies mites (psoroptes ovis) were treated with 22,23-dihydroavermectin b1a (ivermectin) at dosages given subcutaneously (sc)--300 micrograms/kg; orally--400 micrograms/kg; or im--50, 100, or 200 micrograms/kg. at 14 days after treatment, live mites were not found on any of the calves treated sc or im, but live mites were found on all of the orally treated calves at 14 days and on 1 of them at 28 days after treatmen ... | 1982 | 6896409 |
| the infectivity of surviving psoroptes ovis (hering) on cattle treated with ivermectin. | ivermectin, 22,23-dihydroavermectin b1 (merck mk-933), injected intramuscularly at the rate of 200 microgram kg-1 body wt., completely eliminated psoroptes ovis populations from 6 hereford cattle within 2 weeks after treatment. however, mites surviving 1, 3, and 5 days after treatment were viable and infective when transferred to untreated cattle. mites surviving 7 days after treatment did not cause scabies or establish a colony of mites when transferred to untreated cattle. these results indica ... | 1982 | 6896597 |
| immuno-allergological aspects of scabies. a comparative study of spontaneous blastogenesis in the dermal infiltrates of common and hyperkeratotic scabies, allergic contact dermatitis and irritant dermatitis. | by means of planimetric analysis and determination of 3h-thymidine labelling indices of mononuclear cells infiltrating the dermis, it has been suggested that the cellular arm of the immune system is activated after infestation of the human host's skin by the scabies mite. subtle modifications of host-parasite relationships may explain why a single pathogenetic agent (i.e. the scabies mite) is able to evoke such a wide range of clinical lesions in the host. | 1982 | 7165363 |
| serum ige before and after treatment for scabies. | in 120 patients, treated for scabies infection, the serum ige concentrations fell from high levels in 54 and normal levels in 66 to lower levels 12 months after treatment. the specific ige antibodies to dermatophagoides pteronyssinus (rast) were also reduced 12 months after treatment. the decrease in both ige concentrations and ige antibodies was most conspicuous in non-atopic patients. these findings confirm previous observations of specific immunological hypersensitivity to scabies mite, and t ... | 1981 | 7235206 |
| immunologic studies in scabies. | various materials related to the life physiology of the scabies mite in and on the human skin have been identified by morphology. the role they could play as possible activators of both cellular and humoral arms of the host's immune system is discussed. subtle aberrations of this reactive process could be basically responsible for the wide spectrum of clinical and histological aspects reported in scabies. possible lines for future research on host-parasite relationship in scabies are proposed. | 1981 | 7239744 |
| feeding of psoroptes ovis (acari: psoroptidae) on cattle. | | 1981 | 7265139 |
| population increase of psoroptes ovis (acari: psoroptidae) on stanchioned cattle during summer. | | 1981 | 7288829 |
| antigens common to scabies and house dust mites. | twenty-five antigens were demonstrated in a crude dermatophagoides farinae (df) extract by means of crossed immunoelectrophoresis (cie), using a rabbit anti-df serum. with the same antiserum, four antigens were demonstrated in a scabies mite preparations, indicating an immunological relationship between these scabies antigens and some of the df antigens. in tandem cie experiments the df antigens were found to be partly identical to three of the scabies antigens. no ige activity against any of th ... | 1981 | 7316098 |
| effects of the sheep scab mite on cumulative weight gains in cattle. | | 1981 | 7320316 |
| susceptibility of hereford cattle to sheep scab mites after recovery from psoroptic scabies. | | 1981 | 7328214 |
| immune complexes in scabies. in vitro study of the serum c1q fixation in the presence of mite and unparasited human scale extracts. | the in vitro addition of mice or human unparasited scale extracts to the serum of 8 patients with scabies and 5 healthy controls did not significantly modify the fixation of 125i-c1q as compared to control tubes (serum with physiological saline). these results suggest that antigens or substances derived from the scabies mite are not involved in the immune complexes present in the serum of the parasited patients. | 1980 | 7351277 |
| psoroptic scabies in bignorn sheep (ovis canadensis mexicana) in new mexico. | prior to 1978, no reports were made of scabies lesions or mites recovered from any mexican bighorn sheep (ovis canadensis mexicana) examined in the san andres national wildlife refuge in southern new mexico. in 1978, all of five rams harvested by hunters had live mites of the genus psoroptes and active lesions of scabies in their ears and/or on their bodies. deaths due to scabies were not documented during this outbreak although aerial helicopter surveys conducted in march, june and september, ... | 1980 | 7373729 |
| in vitro demonstration of specific immunological hypersensitivity to scabies mite. | an extract prepared from 200 adult female scabies mites was used for prick and intracutaneous testing in twelve patients with previous scabies infestation, as well as in six healthy controls and three persons with skin sensitivity to dermatophagoides pteronyssinus who had never had scabies before. seven individuals who had had scabies less than a year prior to the testing had positive intracutaneous (immediate type) reactions, whereas all the five who had had scabies more than a year before had ... | 1980 | 7437302 |
| effect of psoroptes ovis on the weight of sheep. | | 1980 | 7445347 |
| [effectiveness of moxidectin (cydectin inj.) in mixed psoroptes ovis and sarcoptes ovis infestations in sheep]. | field efficacy of moxidectin injectable was evaluated in sheep naturally infected with both psoroptes ovis and sarcoptes ovis mange. three groups of fifteen ewes were selected from the flock based on parasitological and clinical status. group 1 remained as untreated controls. group 2 animals received a subcutaneous injection of moxidectin at 0.2 mg/kg body weight on day 0; group 3 animals received 0.2 mg/kg moxidectin twice on day 0 and day 7. efficacy was assessed by taking skin scrapings from ... | 1995 | 7571243 |
| efficacy of injectable moxidectin against mixed (psoroptes ovis and sarcoptes scabiei var. ovis) mange infestation in sheep. | field efficacy of injectable moxidectin was evaluated in sheep naturally infested with both psoroptes ovis and sarcoptes scabiei var. ovis mange. three groups of 15 ewes were selected from the flock based on parasitological and clinical status. group 1 remained as untreated controls; group 2 animals received a subcutaneous injection of moxidectin at 0.2 mg kg-1 body weight on day 1; group 3 animals received 0.2 mg kg-1 moxidectin twice on day 1 and day 7. efficacy was assessed by taking skin scr ... | 1995 | 7754610 |
| severe post-dipping dermatitis and subcutaneous fluid swellings associated with two outbreaks of sheep scab (psoroptes ovis infestation) | large subcutaneous fluid swellings developed on some of the sheep in two flocks infested with psoroptes ovis during the two weeks after they had been plunge-dipped in phenol-based solutions. the swellings contained between 1 and 10 litres of exudate and affected 4 per cent of the sheep in each flock. the sheep with subcutaneous fluid swellings or exudative dermatitis had significantly lower serum albumin concentrations than the unaffected sheep (p < 0.05). in most cases secondary bacterial infec ... | 1995 | 7771071 |
| treatment of naturally occurring sheep scab (psoroptes ovis infestation) in the united kingdom with ivermectin. | an outbreak of naturally occurring sheep scab in a flock of 207 sheep was successfully treated with three consecutive weekly subcutaneous injections of ivermectin at a dose rate of 200 micrograms/kg. plunge dipping ewes during early pregnancy was not considered appropriate on welfare grounds. | 1995 | 7785177 |
| effect of an outbreak of sheep scab (psoroptes ovis infestation) during mid-pregnancy on ewe body condition and lamb birthweight. | a naturally occurring outbreak of sheep scab in a flock of 202 ewes during mid-pregnancy resulted in exudation from the scab lesions and hypoalbuminaemia lasting for two to 10 weeks in the severely affected ewes. the serum albumin concentration at the time of diagnosis and two weeks after treatment with ivermectin was inversely correlated with the severity of the scab lesions (p < 0.001). the loss of body condition score over a period of 48 days after treatment was significantly correlated with ... | 1995 | 7793034 |
| examination of possible transmission of sheep scab mite psoroptes ovis between host species. | examination of possible transmission of the irish strain of the sheep scab mite (psoroptes ovis) of ovine origin between host species involved calves and goats being placed with infected sheep and also directly challenged with live mites. although mites remained on recipient species for up to a week, they failed to produce disease in either of these species. calves and goats that had live mites placed on them likewise failed to infect sheep with which they were housed. | 1994 | 7975195 |
| the use of moxidectin 1% injectable for the control of psoroptic mange in sheep. | three groups, each consisting of ten sheep of mixed breeds, naturally infected with psoroptes ovis, were injected with 200 mcg kg-1 moxidectin 1% solution. two groups were injected twice with an interval of 10 days between the injections, the other group was injected once. two groups of five animals, one group infected, the other uninfected, acted respectively as positive and negative controls. parasitological examinations, by direct examination of the sheep using a hand lens and microscopically ... | 1994 | 8030192 |
| feeding behaviour of female psoroptes ovis. | | 1994 | 8059518 |
| survival and retention of infectivity of the mite psoroptes ovis off the host. | psoroptes ovis mites were removed from infected sheep and placed in positions where wool and mites normally accumulate during sheep scab outbreaks. the ambient temperature and humidity were monitored over a 3-week period and the survival and infectivity times were examined. the procedure was carried out during each of the seasons. the hatchability of mite eggs was also examined. it was found that little variation occurred between seasons, with mites regularly retaining viability and infectivity ... | 1994 | 8091638 |
| effects of psoroptes ovis on lamb carcases. | | 1994 | 8135022 |
| effects of psoroptes ovis on lamb carcases. | | 1994 | 8171780 |
| [the variability of the scabies mite sarcoptes scabiei de geer (acariformes, sarcoptidae) in relation to the epidemiology of scabies. 4. the variability of the mite population on a patient and its focal variability]. | the authors analyze the individual variability of the agent of scabies in populations on individual patients and in foci of the disease. they define an elementary micropopulation and a focal population notions. a total of 763 females, collected from the hands of 100 patients with scabies were examined. the findings evidence that the degree of the chetoid covering joining in the mite females, assessed in grades, may be regarded as an indicator of the population status in the pathologic process. g ... | 1993 | 8336646 |
| the prevalence of ectoparasites in ethiopian immigrants. | newly arrived ethiopian immigrants in israel were screened for ectoparasitic insects and mites. of 304 individuals examined 65.1% were infested with the head louse (pediculus humanus capitis). the infestation rate among children varied between 65 and 100%. children aged 6-11 years were the most infested group and no differences between girls and boys were found. the infestation rate in children was significantly higher than that found in adults. approximately 39% of those examined were infested ... | 1993 | 8349453 |
| zoonoses of dermatological interest. | the zoonoses are those diseases transmitted from animals to humans. although commonly thought to be infectious in origin such as scabies or dermatophytosis, inflammatory processes may also be zoonotic. contact dermatitis may result from allergens being carried from animals to humans. although the scabies mite is somewhat species specific, various mites sometimes have the opportunity of producing skin disease on man (ie, canine scabies, porcine scabies, and feline scabies [notoedric mange]); chey ... | 1993 | 8476735 |
| epileptiform seizure in ewes associated with sheep scab mite infestation. | | 1993 | 8488653 |
| efficacy of abamectin against ectoparasites of cattle. | four trials, using 48 european breed cattle, were conducted to evaluate the efficacy of abamectin against the louse species linognathus vituli, haematopinus eurysternus and damalinia bovis and against the mange mites sarcoptes scabiei var bovis and psoroptes ovis. animals were allocated by restricted randomisation based on parasite counts to treatment with abamectin at a dose of 200 micrograms/kg given subcutaneously or to an untreated control group. ectoparasites were counted before treatment a ... | 1993 | 8517005 |
| control of sheep scab (psoroptes ovis) on artificially infested sheep with a single injection of doramectin. | | 1995 | 8578664 |
| conductive hearing loss in bighorn sheep. | in january 1993 we simulated a conductive hearing loss in three mexican bighorn sheep (ovis canadensis mexicana) by placing bone wax or saline solution in their ear canals. our objective was to test whether lesions of the external auditory canal caused by psoroptic mites (psoroptes ovis) may lead to conductive hearing loss in bighorn sheep. we assessed the effects of these manipulations using the auditory brainstem response test. placing saline solution in the external auditory canal, which load ... | 1995 | 8583641 |
| isolation of the gram-negative bacterium, serratia marcescens, from the sheep scab mite, psoroptes ovis. | | 1996 | 8686156 |
| cross-reacting antibodies to sarcoptes suis, chorioptes bovis and notoedres cati and anti-p. ovis ige in sera from sheep infested naturally with psoroptes ovis. | for the development of immunodiagnostic tests to detect mange mite infections in man and animals, it is necessary to know about antigen structure and cross-reactivity between different mite species and other arthropods in contact with the host. sera from sheep infected with psoroptes ovis (sheep anti-p. ovis sera) showed positive reactions in dot blots to p. ovis antigen and cross-reactivity to crude antigen extracts from sarcoptes suis, notoedres cati and chorioptes bovis. using sheep specific ... | 1996 | 8773532 |