1. The role of vascular lesions in diabetes across a spectrum of clinical kidney diseaseRosa Rodriguez-Rodriguez, Radovan Hojs, Francesco Trevisani, Enrique Morales, Gema Fernández, Sebastjan Bevc, Clara Maria Cases Corona, Josep Maria Cruzado, María Quaro, Maruja Navarro Díaz, Mads Hornum, Beatriz Fernandez-Fernandez, Arianna Bettiga, Federico Di Marco, Marina López Martínez, Francisco J. Moreso, Clara García Garro, Khaled Khazim, Fedaa Ghanem, Manuel Praga, Meritxell Ibernón, Ivo Laranjinha, Luís Mendonça, Miguel Bigotte Vieira, Bo Feldt-Rasmussen, Patricia Fox Concepción, Natalia Negrín Mena, Alberto Ortiz, Esteban L. Porrini, 2021, original scientific article Abstract: Introduction: The clinical-histologic correlation in diabetic nephropathy is not completely known.
Methods: We analyzed nephrectomy specimens from 90 patients with diabetes and diverse degrees of proteinuria and glomerular filtration rate (GFR).
Results: Thirty-six (40%) subjects had normoalbuminuria, 33 (37%) microalbuminuria, and 21 (23%) non-nephrotic proteinuria. Mean estimated GFR (eGFR) was 65±23 (40% <60 ml/min per 1.73 m2). About 170 glomeruli per patient were analyzed, and all samples included vascular tissue. Six subjects (7%) were classified in diabetic nephropathy class I, 61 (68%) in class II-a, 13 (14%) in class II-b, 9 (10%) class III, and 1 (1%) in class IV. Eighty percent to 90% of those with normoalbuminuria or microalbuminuria were classified in class II-a or II-b and <10% in class III; 52% of those with proteinuria were in class II-a, 15% in class II-b, and 19% in class III. Nodular sclerosis (57%) and mesangial expansion (15%) were more frequent in cases with proteinuria than in normoalbuminuria (28% and 8%; P = 0.028 and 0.017). About 20% to 30% of all cases, regardless the level of albuminuria or proteinuria or the histologic class had tubular atrophy, interstitial fibrosis, or inflammation in >10% to 20% of the sample. Moderate hyalinosis and arteriolar sclerosis were observed in 80% to 100% of cases with normoalbuminuria, microalbuminuria, proteinuria, as well as in class I, II, or III.
Conclusions: Weak correspondence between analytical parameters and kidney histology was found. Thus, disease may progress undetected from the early clinical stages of the disease. Finally, vascular damage was a very common finding, which highlights the role of ischemic intrarenal disease in diabetes.
Keywords: albuminuria, chronic kidney disease, diabetes, diabetic nephropathy, histology, normoalbuminuria
Published in DKUM: 06.12.2024; Views: 0; Downloads: 10
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3. Borrelial lymphocytoma of the areola in a 9-year-old boy: a case reportDarja Arko, Rajko Kavalar, Iztok Takač, Nina Čas-Sikošek, Vida Gavrić-Lovrec, 2023, other scientific articles Keywords: lymphocytoma, Lyme borreliosis, areola, histology
Published in DKUM: 21.12.2023; Views: 207; Downloads: 24
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4. Salivary gland adaptation to dietary inclusion of hydrolysable tannins in boarsMaša Mavri, Marjeta Čandek-Potokar, Gregor Fazarinc, Martin Škrlep, Catrin Rutland, Božidar Potočnik, Nina Batorek Lukač, Valentina Kubale, 2022, original scientific article Abstract: The ingestion of hydrolysable tannins as a potential nutrient to reduce boar odor in entire males results in the significant enlargement of parotid glands (parotidomegaly). The objective of this study was to characterize the effects of different levels of hydrolysable tannins in the diet of fattening boars (n = 24) on salivary gland morphology and proline-rich protein (PRP) expression at the histological level. Four treatment groups of pigs (n = 6 per group) were fed either a control (T0) or experimental diet, where the T0 diet was supplemented with 1% (T1), 2% (T2), or 3% (T3) of the hydrolysable tannin-rich extract Farmatan®. After slaughter, the parotid and mandibular glands of the experimental pigs were harvested and dissected for staining using Goldner’s Trichrome method, and immunohistochemical studies with antibodies against PRPs. Morphometric analysis was performed on microtome sections of both salivary glands, to measure the acinar area, the lobular area, the area of the secretory ductal cells, and the sizes of glandular cells and their nuclei. Histological assessment revealed that significant parotidomegaly was only present in the T3 group, based on the presence of larger glandular lobules, acinar areas, and their higher nucleus to cytoplasm ratio. The immunohistochemical method, supported by color intensity measurements, indicated significant increases in basic PRPs (PRB2) in the T3 and acidic PRPs (PRH1/2) in the T1 groups. Tannin upplementation did not affect the histo-morphological properties of the mandibular gland. This study confirms that pigs can adapt to a tannin-rich diet by making structural changes in their parotid salivary gland, indicating its higher functional activity.
Keywords: pigs, dietary supplements, tannins, parotid gland, mandibular gland, immunohistochemistry, histology, proline-rich proteins (PRP), swine
Published in DKUM: 07.07.2023; Views: 506; Downloads: 199
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