Induction of Antigen-Specific IgA-Forming Cells in the Upper Respiratory Mucosa

1989 ◽  
Vol 98 (7) ◽  
pp. 523-529 ◽  
Author(s):  
Noritake Watanabe ◽  
Hirofumi Kato ◽  
Goro Mogi
Keyword(s):  
Lymphoid Tissue ◽  
Immunoglobulin A ◽  
Lymphoid Tissues ◽  
Soluble Antigen ◽  
Particulate Antigen ◽  
Antibody Titers ◽  
Group A ◽  
Nasal Secretions ◽  
Group B ◽  
Group D

We investigated the actual processes for activating respiratory mucosal immunity. Hartley guinea pigs were immunized with particulate antigen of dinitrophenylated ovalbumin into the duodenum (group A), trachea (group B), and nasal cavity (group C) 1 week after systemic priming with the soluble antigen. The control animals (group D) received only systemic priming. Immunoglobulin A antibody titers in nasal secretions and saliva from groups A and B significantly exceeded those of groups C and D (p<.01). Many antigen-specific IgA-forming cells were detected in the respiratory and gastrointestinal mucosae of groups A and B. Following duodenal immunization, the appearance of antigen-specific IgA-forming cells in Peyer's patches preceded those in mesenteric and hilar lymph nodes, while they simultaneously appeared in the lymphoid tissues after tracheal immunization. These findings suggest that intratracheal immunization mainly stimulates bronchus-associated lymphoid tissue as a source of IgA precursors, as intraduodenal immunization stimulates gut-associated lymphoid tissue.

scholarly journals Antimeasles antibodies in children submitted to different vaccination schedules

1993 ◽  
Vol 26 (2) ◽  
pp. 77-82 ◽  
Author(s):  
Solange Artimos de Oliveira ◽  
Akira Homma ◽  
Léa Camillo-Coura ◽  
Maria Lucília P. Loureiro ◽  
Maria Teresa G. N. de Almeida
Keyword(s):  
Geometric Mean ◽  
Age Groups ◽  
Age Group ◽  
The Past ◽  
Measles Antibodies ◽  
History Of ◽  
Antibody Titers ◽  
Group A ◽  
Group B ◽  
Group D

ln order to study the measles antibody behavior of three vaccination schedules, 684 children were divided into 4 Groups: Group A (341 vaccinated children under the age of one); Group B (101 children at the age of one); Group C (74 children under the age of one and one at the age of one); Group D (163 unvaccinated children with a history of measles in the past - Group control). Children of Group A presented lower rates and 25.9% of the age group under two did not show any measles antibodies. In Group B, all the children presented antibodies. In Group C onby 4.0% did not. In all age groups, the geometric mean HI antibody titers of Group A were lower than the valuesfound in the other groups. The age at vaccination was the factor of greater influence on the results of this study.

Comparative Study on Production of Antibody in Broilers Vaccinated with Four Lyophilized Newcastle Disease Vaccine

1970 ◽  
Vol 27 (1) ◽  
pp. 1-5
Author(s):  
S Kamrunnahar ◽  
MM Alim ◽  
AHM Taslima ◽  
MA Islam ◽  
NC Paul
Keyword(s):  
Newcastle Disease ◽  
Control Group ◽  
Comparative Efficacy ◽  
Unvaccinated Control ◽  
Antibody Titers ◽  
Group A ◽  
The Mean ◽  
Group B ◽  
Group D ◽  
Newcastle Disease Vaccine

A comparative efficacy of four lyophilized Newcastle disease vaccine, namely, Medivac ND-LaSota®, BCRDV®, Izovac B1 Hitchner® and Cevac Vitapest-L® in regard to the production of Himagglutination Inhibition (HI)- antibody was accomplished. For this, a total of 75 chicks were equally divided into five experimental groups such as, A, B, C, D and E. The HI antibody titers of group A vaccinated on 5 and 21 days of age with Medivac NDLaSota ® fluctuated among the Mean ± SD of 89.60 ± 33.05, 102.40 ± 33.05 and 192 ± 67.46 at 15 (10 DPV), 19 (14 DPV) and 31 (26 DPV) days of age respectively. As regards, group B administered with BCRDV® on the same days, the HI titers varied with the Mean ± SD of 83.20 ± 30.91, 102.40 ± 33.04 and 204.80 ± 66.09 at 15 (10 DPV), 19 (14 DPV) and 31 (26 DPV) days of age respectively. When considered the HI antibody titers of group C inoculated with Izovac B1 Hitchner® on days 5 and 21 of age, HI titer exhibited the Mean ± SD of 80.00 ± 43.33, 96.00 ± 33.73 and 192.00 ± 67.46 at 15 (10 DPV), 19 (14 DPV) and 31 (26 DPV) days of age respectively. Elucidation of HI antibody titers of group D birds receiving Cevac Vitapest-L® on same days were recorded to be of Mean ± SD of 96.00 ± 33.73, 115.20 ± 26.98 and 320.00 ± 173.31 at 15 (10 DPV), 19 (14 DPV) and 31 (26 DPV) days of age respectively. In birds of unvaccinated control group E, HI titers were found to be ranged from 32- 64, 16-32, 8-16, 4-8 and 2-4 with Mean ± SD of 48.00 ± 16.87, 24.00 ± 8.43, 11.20 ± 4.13, 5.20 ± 1.93 and 3.40 ± 0.97 on 3, 15, 17, 19 and 31 days of age respectively. Thus, it was found that birds of group A, B, C and D vaccinated with Medivac ND-LaSota®, BCRDV®, Izovac B1 Hitchner® and Cevac Vitapest-L® induced slightly higher level of HI antibody titers than that of BCRDV. Maternally derived antibody (MDA) persisted to a minimal level until the age of chicks of day 17 and later on MDA declined. Keywords: Vaccine; Antibody Titer; Newcastle Disease VirusDOI: http://dx.doi.org/10.3329/bjm.v27i1.9159 BJM 2010; 27(1): 1-5

scholarly journals Experimental Toxoplasmosis in Japanese Quail

1994 ◽  
Vol 6 (2) ◽  
pp. 216-221 ◽  
Author(s):  
J. P. Dubey ◽  
M. A. Goodwin ◽  
M. D. Ruff ◽  
O. C. H. Kwok ◽  
S. K. Shen ◽  
...  
Keyword(s):  
Toxoplasma Gondii ◽  
Japanese Quail ◽  
Latex Agglutination ◽  
Strain Group ◽  
Modified Agglutination Test ◽  
Antibody Titers ◽  
Group A ◽  
Small Intestinal ◽  
Group B ◽  
Group D

Twenty-four 5-month-old battery-hatched Japanese quail were inoculated orally with 105 (ME 49 strain, group A, 6 birds), 103 (ME 49 strain, group B, 6 birds), 105 (GT-1 strain, group C, 6 birds), and 103 (GT-1 strain, group D, 6 birds) Toxoplasma gondii oocysts. All birds in group C died or were euthanized within 8 days after inoculation (DAI). Five of the 6 birds in group D died or were euthanized 8, 9, 15, 19, and 23 DAI. One of the 6 quail in group A died 9 DAI, and 1 of the 6 birds in group D died 16 DAI. The 11 quail (1 from group D and 10 from groups A and B) were euthanized 63 DAI; T. gondii was isolated by bioassays in mice from the brains of 10, hearts of 10, and skeletal muscles of all 11 quail. Quail that survived marked small intestinal and splenic toxoplasmosis lived long enough to develop severe protozoal pneumonia, myocarditis, or meningoencephalitis. The quail that survived only to be examined at 63 DAI had moderate multifocal nonpurulent encephalitis and myositis and had a hypertrophic spleen that contained hemosiderin-laden macrophages. Toxoplasma gondii antibodies were found in the sera of all quail examined 63 DAI. Antibody titers to T. gondii in the modified agglutination test were higher than in the indirect hemagglutination and latex agglutination tests. Antibodies were not detected in quail sera examined by the Sabin-Feldman dye test.

scholarly journals Investigation on Baby Chick Ranikhet Disease Vaccine administration in chicks of vaccinated and nonvaccinated origin

1970 ◽  
Vol 4 (2) ◽  
pp. 93-96
Author(s):  
K Begum ◽  
MSR Khan ◽  
MB Rahman ◽  
MA Kafi ◽  
M Das ◽  
...  
Keyword(s):  
Haemagglutination Inhibition ◽  
Primary Vaccination ◽  
Vaccination Schedule ◽  
Low Level ◽  
Antibody Titers ◽  
Group A ◽  
Group B ◽  
High Level ◽  
Group D ◽  
Positive Effect

Persistence of maternally derived antibody to Baby Chick Ranikhet Disease Vaccine and its influence on vaccination programme in chicks of vaccinated and nonvaccinated origin were determined during the period from July 2005 to May 2006. The study suggested an effective vaccination schedule of Baby Chick Ranikhet Disease Vaccine in chicks of vaccinated and nonvaccinated origin. The optimum age for vaccination of chicks of vaccinated and nonvaccinated origin were determined by inoculating vaccine following two different vaccination schedules. In one schedule chicks of group C of vaccinated origin and group F of nonvaccinated origin were vaccinated primarily at day 4 and was boosted at day 19 and in another schedule the chicks of group D of vaccinated origin were vaccinated once at day 14 without giving booster dose. It was found that maternally derived antibody passed over from the parents to progeny chicks and remain protective for the chicks of group A of vaccinated origin until 18 days of age and the chicks of group B of nonvaccinated origin until 5 days of age. This maternally derived antibody was retained particularly up to 24 days and 11 days in chicks of group A and B obtained from parent vaccinated and nonvaccinated flock respectively. Chicks of group C primarily vaccinated with Baby Chick Ranikhet Disease Vaccine revealed slightly positive effect to rise of antibody during their gradual increase of age due to the presence of high level of antibody at the time of primary vaccination where as in chicks of group F antibody level was increasing impetuously due to the low level of antibody at the time of vaccination. Chicks of group D vaccinated at the state of subsidence of maternally derived antibody with Baby Chick Ranikhet Disease Vaccine showed impetuous production of antibody titers. Chicks possessing high level of maternally derived antibody may be vaccinated singly against Newcastle disease when they are 14 to 18 days old and chicks possessing low level of maternally derived antibody may be vaccinated twice at 4 and 19 days of age. Key words: BCRDV, F-strain NDV, chicks of vaccinated and nonvaccinated origin, MDA, haemagglutination inhibition test DOI = 10.3329/bjvm.v4i2.1290 Bangl. J. Vet. Med. (2006). 4 (2): 93-96

Survival of classic swine fever virus in hams made from the meat of pigs vaccinated with the PAV-250 strain and unvaccinated pigs

2019 ◽  
Vol 10 (3) ◽  
pp. 536-551
Author(s):  
Heidi Amezcua Hempel ◽  
María Salud Rubio Lozano ◽  
Eliseo Manuel Hernández Baumgarten ◽  
Pablo Correa Girón † ◽  
Oscar Torres Ángeles ◽  
...  
Keyword(s):  
Reference Strain ◽  
Clinical Signs ◽  
Classical Swine Fever ◽  
Fever Virus ◽  
Direct Immunofluorescence ◽  
Biometric Analysis ◽  
Treatment Groups ◽  
Group A ◽  
Group B ◽  
Group D

The study was to determine the presence of Classical Swine Fever virus (CSFv), in the meat of vaccinated pigs with the PAV-250 strain and then challenged using the same strain. Five treatment groups were established (each with four pigs). Group A: Pigs thatwere fed with processed hams from negative animals; Group B: Pigs that were fed with processed hams from commercial pigs inoculated with the ALD (reference strain) (titre of 104.0/ml); Group C: Pigs fed with processed hams from pigs infected with the virulent ALD strain (titre of 102.5/ml); Group D: Pigs fed with processed hams from pigs vaccinated with the PAV-250 strain and challenged with the ALD strain (titre of 101.1/ml); and Group E: Pigs fed with processed hams from pigs vaccinated with two doses of the PAV-250 strain and challenged with the ALD strain (negative). Blood samples were taken at d 1, 5, 10, 15 and 20 for biometric analysis. Groups B, C and D manifested clinical signs of CSFv: 40 °C temperature, anorexia, paralysis, vomiting, diarrhea, tremor, hirsute hair and cyanosis. Pigs were slaughtered and necropsies performed to identify lesions in tissues. Results of direct immunofluorescence testing of tissues were positive and the virus was recovered. Under these study conditions, it was found that CSFv resisted the cooking method at 68 °C for 40 min in hams from unvaccinated pigs, and that the virus was able to transmit the disease to healthy unvaccinated pigs, whereas the hams from the vaccinated animals did not transmit the virus.

scholarly journals The Role of Obesity in Predicting the Clinical Outcomes of COVID-19

Obesity Facts ◽  
2021 ◽  
pp. 1-9
Author(s):  
Serdar Sahin ◽  
Havva Sezer ◽  
Ebru Cicek ◽  
Yeliz Yagız Ozogul ◽  
Murat Yildirim ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Health Care Providers ◽  
Study Groups ◽  
Normal Weight ◽  
Overweight And Obesity ◽  
Care Providers ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Group D

<b><i>Introduction:</i></b> The aim of this was to describe the predictors of mortality related to COVID-19 infection and to evaluate the association between overweight, obesity, and clinical outcomes of COVID-19. <b><i>Methods:</i></b> We included the patients &#x3e;18 years of age, with at least one positive SARS-CoV-2 reverse transcriptase-polymerase chain reaction. Patients were grouped according to body mass index values as normal weight &#x3c;25 kg/m<sup>2</sup> (Group A), overweight from 25 to &#x3c;30 kg/m<sup>2</sup> (Group B), Class I obesity 30 to &#x3c;35 kg/m<sup>2</sup> (Group C), and ≥35 kg/m<sup>2</sup> (Group D). Mortality, clinical outcomes, laboratory parameters, and comorbidities were compared among 4 groups. <b><i>Results:</i></b> There was no significant difference among study groups in terms of mortality. Noninvasive mechanical ventilation requirement was higher in group B and D than group A, while it was higher in Group D than Group C (Group B vs. Group A [<i>p</i> = 0.017], Group D vs. Group A [<i>p</i> = 0.001], and Group D vs. Group C [<i>p</i> = 0.016]). Lung involvement was less common in Group A, and presence of hypoxia was more common in Group D (Group B vs. Group A [<i>p</i> = 0.025], Group D vs. Group A [<i>p</i> &#x3c; 0.001], Group D vs. Group B [<i>p</i> = 0.006], and Group D vs. Group C [<i>p</i> = 0.014]). The hospitalization rate was lower in Group A than in the other groups; in addition, patients in Group D have the highest rate of hospitalization (Group B vs. Group A [<i>p</i> &#x3c; 0.001], Group C vs. Group A [<i>p</i> &#x3c; 0.001], Group D vs. Group A [<i>p</i> &#x3c; 0.001], Group D vs. Group B [<i>p</i> &#x3c; 0.001], and Group D vs. Group C [<i>p</i> = 0.010]). <b><i>Conclusion:</i></b> COVID-19 patients with overweight and obesity presented with more severe clinical findings. Health-care providers should take into account that people living with overweight and obesity are at higher risk for COVID-19 and its complications.

scholarly journals AB0422 LEFT VENTRICULAR ABNORMALITIES IN SYSTEMIC LUPUS ERYTHEMATOSUS PATIENTS FOLLOWED BY SEQUENTIAL ECHOCARDIOGRAPHY

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1510.1-1511
Author(s):  
T. Kuga ◽  
M. Matsushita ◽  
K. Tada ◽  
K. Yamaji ◽  
N. Tamura
Keyword(s):  
Lupus Erythematosus ◽  
Systolic Dysfunction ◽  
Left Ventricular ◽  
Monocyte Count ◽  
Lv Dysfunction ◽  
Group A ◽  
Group B ◽  
Lv Diastolic Dysfunction ◽  
Group D

Background:Cardiovascular disease (CVD) is detected in up to 50% of systemic lupus erythematosus (SLE) patients1and major cause of death2. Even clinically silent SLE patients can develop left ventricular (LV) diastolic dysfunction3. Proper echocardiographic follow up of SLE patients is required.Objectives:To clarify how the prevalence of LV abnormalities changes over follow-up period and identify the associated clinical factors, useful in suspecting LV abnormalities.Methods:29 SLE patients (24 females and 5 men, mean age 52.8±16.3 years, mean disease duration 17.6±14.5 years) were enrolled. All of them underwent echocardiography as the baseline examination and reexamined over more than a year of follow-up period(mean 1075±480 days) from Jan 2014 to Sep 2019. Patients complicated with pulmonary artery hypertension, deep venous thrombosis or pulmonary embolism and underwent cardiac surgery during the follow-up period were excluded. Left ventricular(LV) systolic dysfunction was defined as ejection fraction (EF) < 50%. LV diastolic dysfunction was defined according to ASE/EACVI guideline4. LV dysfunction (LVD) includes one or both of LV systolic dysfunction and LV diastolic function. Monocyte to HDL ratio (MHR) was calculated by dividing monocyte count with HDL-C level.Prevalence of left ventricular abnormalities was analysed at baseline and follow-up examination. Clinical characteristics and laboratory data were compared among patient groups as follows; patients with LV dysfunction (Group A) and without LV dysfunction (Group B) at the follow-up echocardiography, patients with LV asynergy at any point of examination (Group C) and patients free of LV abnormalities during the follow-up period (Group D).Results:At the baseline examination, LV dysfunction (5/29 cases, 13.8%), LV asynergy (6/29 cases, 21.7%) were detected. Pericarditis was detected in 7 patients (24.1%, LVD in 3 patients, LV asynergy in 2 patients) and 2 of them with subacute onset had progressive LV dysfunction, while 5 patients were normal in echocardiography after remission induction therapy for SLE. At the follow-up examination, LV dysfunction (9/29 cases, 31.0%, 5 new-onset and 1 improved case), LV asynergy (6/29 cases, 21.7%, 2 new-onset and 2 improved cases) were detected. Though any significant differences were observed between Group A and Group B at the baseline, platelet count (156.0 vs 207.0, p=0.049) were significantly lower in LV dysfunction group (Group A) at the follow-up examination. Group C patients had significantly higher uric acid (p=0.004), monocyte count (p=0.009), and MHR (p=0.003) than Group D(results in table).Conclusion:LV dysfunction is progressive in most of patients and requires regular follow-up once they developed. Uric acid, monocyte count and MHR are elevated in SLE patients with LV asynergy. Since MHR elevation was reported as useful marker of endothelial dysfunction5, our future goal is to analyse involvement of monocyte activation and endothelial dysfunction in LV asynergy of SLE patients.References:[1]Doria A et al. Lupus. 2005;14(9):683-6.[2]Manger K et al. Ann Rheum Dis. 2002 Dec;61(12):1065-70.[3]Leone P et al. Clin Exp Med. 2019 Dec 17.[4]Nagueh SF et al. J Am Soc Echocardiogr. 2016 Apr;29(4):277-314.[5]Acikgoz N et al. Angiology. 2018 Jan;69(1):65-70.Numbers are median (interquartile range), Mann-Whitney u test were performed, p value less than 0.05 was considered statistically significant.Disclosure of Interests: :None declared

scholarly journals Prophylactic temporary abdominal aortic balloon occlusion for patients with pernicious placenta previa: a retrospective study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Fei Huo ◽  
Hansheng Liang ◽  
Yi Feng
Keyword(s):  
Placenta Previa ◽  
Balloon Occlusion ◽  
Artery Embolism ◽  
Abdominal Aortic ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Clinical Records ◽  
Group D ◽  
Central Placenta Previa

Abstract Background Pernicious placenta previa (PPP) can increase the risk of perioperative complications. During caesarean section in patients with adherent placenta, intraoperative blood loss, hysterectomy rate and transfusion could be reduced by interventional methods. Our study aimed to investigate the influence of maternal hemodynamics control and neonatal outcomes of prophylactic temporary abdominal aortic balloon (PTAAB) occlusion for patients with pernicious placenta previa. Methods This was a retrospective study using data from the Peking University People’s Hospital from January 2014 through January 2020. Clinical records of pregnant women undergoing cesarean section were collected. Patients were divided into two groups: treatment with PTAAB placement (group A) and no balloon placement (group B). Group A was further broken down into two groups: prophylactic placement (Group C) and balloon occlusion (group D). Results Clinical records of 33 cases from 5205 pregnant women underwent cesarean section were collected. The number of groups A, B, C, and D were 17, 16, 5 and 12.We found that a significant difference in the post-operative uterine artery embolism rates between group A and group B (0% vs.31.3%, p = 0.018). There was a significant difference in the Apgar scores at first minute between group A and group B (8.94 ± 1.43 vs 9.81 ± 0.75,p = 0.037),and the same significant difference between two groups in the pre-operative central placenta previa (29.4% vs. 0%,p = 0.044), complete placenta previa (58.8% vs 18.8%, p = 0.032),placenta implantation (76.5% vs 31.3%, p = 0.015). We could also observe the significant difference in the amount of blood cell (2.80 ± 2.68vs.10.66 ± 11.97, p = 0.038) and blood plasma transfusion (280.00 ± 268.32 vs. 1033.33 ± 1098.20, p = 0.044) between group C and group D. The significant differences in the preoperative vaginal bleeding conditions (0% vs 75%, p = 0.009), the intraoperative application rates of vasopressors (0% vs. 58.3%, p = 0.044) and the postoperative ICU (intensive care unit) admission rates (0% vs. 58.3%, p = 0.044) were also kept. Conclusions PTAAB occlusion could be useful in reducing the rate of post-operative uterine artery embolism and the amount of transfusion, and be useful in coping with patients with preoperative vaginal bleeding conditions, so as to reduce the rate of intraoperative applications of vasopressors and the postoperative ICU (intensive care unit) admission. In PPP patients with placenta implantation, central placenta previa and complete placenta previa, we advocate the utilization of prophylactic temporary abdominal aortic balloon placement.

scholarly journals Biomechanical study of Tile C3 pelvic fracture fixation using an anterior internal system combined with sacroiliac screws

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Lin Liu ◽  
Donggui Zeng ◽  
Shicai Fan ◽  
Yongxing Peng ◽  
Hui Song ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Steel Plate ◽  
Standing Position ◽  
Pelvic Fractures ◽  
Internal Fixator ◽  
Sacroiliac Joints ◽  
Sacroiliac Screws ◽  
Group A ◽  
Group B ◽  
Group D

Abstract Background How to perform minimally-invasive surgery on Tile C pelvic fractures is very difficult, and it is also a hot topic in orthopedic trauma research. We applied minimally-invasive treatment using an anterior internal fixator combined with sacroiliac screws. Objectives To compare the biomechanical properties of different fixation models in pelvic facture specimens, using an internal fixation system or a steel plate combined with sacroiliac screws. Methods Sixteen fresh adult cadaver pelvic specimens were randomly separated into four groups named A, B, C, and D. The four groups were respectively stabilized using a two-screwed, three-screwed, or four-screwed anterior internal fixator or a steel plate with sacroiliac screws. All models were tested in both standing and sitting positions. Vertical loads of 600 N were applied increasingly. Shifts of bilateral sacroiliac joints and pubis rupture were measured. Results The shifts in sacroiliac joints and pubis rupture in the standing position were all less than 3.5 mm, and the shifts in the sitting position were all less than 1 mm. In the standing position, the results of shifts in the sacroiliac joints were group C < group D < group B < group A. For comparisons between A:B and C:D, P > 0.05. For comparisons between A, B:C, and D, P < 0.05. The results of shifts in pubis ruptures were group D < group C < group B < group A. In the comparison between C:D, P > 0.05; for comparisons between A:B, A:C, A:D, B:C, and B:D, P < 0.05. In the sitting posture, the results of shifts in the sacroiliac joints were group C < group D < group B < group A, and the shifts in the pubis ruptures were group D < group C < roup B < group A. For comparison between C:D, P > 0.05. For comparisons between A:B, A:C, A:D, B:C, and B:D, P < 0.05. Conclusion Use of an anterior internal fixator combined with sacroiliac screws effectively stabilized Tile C3 pelvic fractures. The stability of specimens increased as the number of screws in the internal fixator increased.

scholarly journals Hematological Features in Sheep with IgG and IgM Antibodies against Borrelia burgdorferi sensu lato

Pathogens ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 164
Author(s):  
Labrini V. Athanasiou ◽  
Victoria M. Spanou ◽  
Eleni G. Katsogiannou ◽  
Panagiotis D. Katsoulos
Keyword(s):  
Borrelia Burgdorferi ◽  
Rural Areas ◽  
Blood Analysis ◽  
Borrelia Burgdorferi Sensu Lato ◽  
Igm Antibodies ◽  
Group A ◽  
Group B ◽  
Group D ◽  
Immunofluorescence Antibody

Exposure of sheep to Borreliaburgdorferi sensulato (s.I.) complex, the causative agent of Lyme borreliosis (LB), has been reported in tick-abundant areas worldwide, while no data have been reported in Greece. The aim of the study was to identify the hematological alterations in sheep with seropositivity against Borrelia burgdorferi (s.I.). Blood samples were obtained from 318 tick infested sheep for blood analysis and serological determination of IgG and IgM antibodies against B. burgdorferi by indirect immunofluorescence antibody (IFA) assay after exclusion of endo-ectoparasites and other tick-borne infections. A total number of 162 sheep met the inclusion criteria, allocated in four groups based on the presence or absence of IgG and/or IgM; sheep found negative for IgM and IgG (Group A), positive for IgM (Group B), positive for both IgM and IgG (Group C) and positive for IgG (Group D). Anemia, thrombocytopenia and normal or decreased leukocyte count, mainly due to lymphopenia were the main hematological features observed in seropositive sheep. The presence of these features raises the suspicion of Borrelia infection in tick infested sheep. The seropositivity of 23.58% in sheep raises concerns of Borrelia circulation, especially in rural areas and potential risk of transmission to humans.

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