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Abstract

Great economic losses to the dairy industry are associated with bovine mastitis, which results in poor milk quality and high treatment costs. Anti-inflammatory proteins play an important role in the suppression of the immune response against invading pathogenic microorganisms and are therefore being studied for possible use in the early diagnosis of mastitis. In our study, we used milk samples from 15 cows of Holstein Friesian breed with different health status (5 healthy, 5 subclinical, and 5 clinical animals), and tested them using immunohistochemical (IHC) analysis to evaluate the presence of IL-2, IL-10, TGF-β1, βDEF-2, DEF-3, and Cathelicidin LL37 proteins. The calculation of positively and negatively stained cells for each biomarker was performed using the semiquantitative counting method. We found the presence of all factors with the exception of Cathelicidin LL37, which was almost absent in milk samples of all animal groups. The significant decrease of IL-10, β-def2, and β-def3 expression levels within the 3 days of sampling, found in the milk of animals with sub- and clinical mastitis, indicates the loss of antiinflammatory protection of the affected cow’s udder. In contrast, the stable increase of IL-2 and TGF-β1 positive cells observed in the milk of mastitis-affected cows, and the similar expression of these factors in the milk of healthy animals, indicate the possible lack of involvement of these cytokines at an early stage of udder inflammation.
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Authors and Affiliations

K. Šerstņova
1
M. Pilmane
1
Z. Vitenberga-Verza
1
I. Melderis
1
Ł. Gontar
2
M. Kochański
2
A. Drutowska
2
G. Maróti
3 4
B. Prieto-Simón
5 6

  1. The Institute of Anatomy and Anthropology, RSU, 9 Kronvalda bulvaris, Riga, Latvia
  2. Research and Innovation Centre Pro-Akademia, Innowacyjna 9/11, 95-050 Konstantynow Lodzki, Poland
  3. Seqomics Biotechnology Ltd., Morahalom, Vallalkozak utja 7, Hungary
  4. Biological Research Center, Plant Biology Institute, Szeged, Temesvári krt. 62, Hungary
  5. Department of Electronic Engineering, Universitat Rovira i Virgili, C. de l’Escorxador, 43007 Tarragona, Spain
  6. ICREA, Pg. Lluís Companys 23, Barcelona, Spain
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Abstract

The interstitial cells known as telocytes have been described in various organs. Their role in the normal physiology and pathogenesis of numerous diseases is well known. They have been described in the context of various diseases (gallstone disease, endometriosis, uterine myoma, hydronephrosis, myocardial infraction, psoriasis, etc.), while their impact on inflammation, involvement in angiogenesis, and repair highlights their part in local homeostasis. What is known about their relationship with the immune system? Their secretomes, genome, immune profiles, contacts with surrounding cells, and specific loca-lization allow us to give a possible explanation for their involvement in pathological pathways. This review aims to present the roles and features of telocytes in the context of intestinal immunity (the largest in our body), in the spleen, their interactions with immunocytes, and their place in stem cell niches.
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Authors and Affiliations

Veronika Aleksandrovych
1
Anna Gil
2
Adrian Poniatowski
1 3

  1. Department of Pathophysiology, Jagiellonian University Medical College, ul. Czysta 18, 31-121 Kraków, Poland
  2. Department of Anatomy, Jagiellonian University Medical College, ul. Kopernika 12, 31-034 Kraków, Poland
  3. Vassar Brothers Medical Center, Department of Medicine, 45 Reade Place, Poughkeepsie, NY, USA
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Abstract

The aim of this work was to evaluate the relative gene expression levels of the cytokines IL- 1B, IL-8, IL-12, IFN-γ, IL-4, IL-10 and TGF-β in somatic milk cells of French Alpine breed, anestrous goats that were experimentally infected in the left mammary gland with Staphylococcus chromogenes during the lactation peak. Milk samples were obtained from both glands for 21 consecutive days post infection. Total RNA was extracted, and real-time PCR was conducted using primers specific to each cytokine. The relative RNA expression of the evaluated cytokines was determined by the comparative method 2-ΔΔCT, using milk from the right gland of the goats as a reference (control) and glyceraldehyde-3-phosphate dehydrogenase (GAPDH) as an endogenous control. According to the Wilcoxon test results, IL-1B and IL-12 expression levels showed significant differences compared to those in the control group (p<0.05) from 24 hours post infection until the end of lactation; on day three, IL1β, IL8, IL12 and TGF-β had a statistically significant change in expression with respect to those in the control group (p<0.05); closer to the end of the lactation period, there is no overexpression of the anti-inflammatory interleukins (IL-4 and TGF-β) which may reflect the effort of the host immune system to eradicate the microorganism from the mammary gland.

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Authors and Affiliations

R.A. Ruiz-Romero
D. Martínez-Gómez
R.A. Cervantes-Olivares
E. Díaz-Aparicio
A.E. Ducoing-Watty
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Abstract

Studies on serum interleukin (IL)-31 levels in dogs with atopic dermatitis (AD) and their correlation with disease severity are limited. To the author’s knowledge, there are no studies that measured serum IL-31 in dogs treated with lokivetmab injections, a selective inhibitor of this key cytokine in pruritus. The aim of the study was to evaluate serum IL-31 levels in dogs treated with lokivetmab and correlate it with the severity of canine atopic dermatitis using the pruritus visual analog scale (pVAS) and canine atopic dermatitis extent and severity index (CADESI-04). Ten client-owned dogs diagnosed with AD received two injections of lokivetmab four weeks apart. Disease severity was assessed using the pVAS and CADESI-04 scores before and after both injections. In addition, canine serum IL-31 levels were measured at the same moments. Serum IL-31 was detected in all dogs in the study. There was a significant reduction in pVAS scores and serum IL-31 after administrations. However, there was no difference in CADESI-04 scores, and there was no significant correlation between CADESI-04 scores and serum IL-31 in dogs diagnosed with AD. Nonetheless, a significant positive correlation was observed between the pVAS scores and serum IL-31 levels with lokivetmab therapy, which reinforces the role of IL-31 in the pathogenesis of pruritus in dogs with AD. The data presented here provide further evidence that IL-31 is directly involved in pruritus pathogenesis in dogs with AD. In addition, blocking IL-31 has a significant antipruritic effect, but has no influence on skin lesion severity and extension.
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Authors and Affiliations

J.R. Calesso
1
V.S. Marques
1
O.V. de Carvalho
2
A.P. Costa-Val
1

  1. Department of Veterinary Clinical Sciences and Surgery, Federal University of Minas Gerais, 6627 Antonio Carlos Avenue, Belo Horizonte – Minas Gerais, 31270-901, Brazil
  2. TECSA Laboratories, Virology Department, 6226 Contorno Avenue, Belo Horizonte – Minas Gerais, 30110-042, Brazil

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