Nuova ricerca

ERJON RADHESHI

Docente a contratto
Dipartimento di Scienze Biomediche, Metaboliche e Neuroscienze sede Arcispedale Santa Maria Nuova
Docente in convenzione
Dipartimento di Scienze Mediche e Chirurgiche Materno-Infantili e dell'Adulto sede Arcispedale Santa Maria Nuova

Home | Curriculum(pdf) | Didattica |


Pubblicazioni

2016 - Postmortem diagnosis of anaphylaxis in presence of decompositional changes [Articolo su rivista]
Radheshi, Erjon; REGGIANI BONETTI, Luca; Confortini, Annalisa; Silingardi, Enrico; Palmiere, Cristian
abstract

Eosinophil and activated mast cell identification in the spleen combined with mast cell tryptase determination in postmortem serum may diagnose fatal anaphylaxis with a high degree of certainty. Mast cell tryptase measurement and significance in corpses with decompositional changes remains however an issue of controversy. Analogously, immunohistochemistry in corpses with decompositional changes may be influenced by several mechanisms, including protein alteration, antigen diffusion and unspecific antibody binding to disrupted protein structures. The authors present an autopsy case involving a 55-year-old woman who unintentionally received clarithromycin. Due to difficult in administrative procedures, the postmortem examination was performed 96 h after death. Mast cell tryptase was measured in postmortem serum from femoral, aortic and right heart blood. The obtained results were consistent with mast cell activation. Histochemistry (Pagoda Red) and immunohistochemistry (anti-tryptase antibodies) allowed splenic eosinophils and mast cells to be detected. Based on the results of all postmortem investigations, the hypothesis of anaphylaxis following accidental clarithromycin administration was formulated.

2015 - Estimation of the time of death through the analysis of clock miRNAs expression in blood and vitreous humor [Articolo su rivista]
Corradini, Beatrice; Alu', Milena; Radheshi, Erjon; Gabbolini, Valentina; Ferrari, Francesca; Santunione, Anna Laura; Silingardi, Enrico
abstract

Estimation of the time since death is a practical task in daily forensic casework but available methods lack reliability especially in complex deaths and after long PM period. MirRNA analysis should be ideally an useful ancillary tool as it proved to be sensitive in forensics especially for body fluid identification. Here we analyzed 10 miRNAs with a supposed role in circadian rhythms through an RT-qPCR assay in postmortem samples of blood (n = 12) and vitreous humor (n = 12) from individuals died in the day or at night, in order to find those with an oscillating pattern of variation. The expression stability of four endogenous controls was also tested to find the most suitable for normalization.SNORD95 proved to be the best and was used in both body fluids. Four miRNAs showed significant differential expression between individuals died at daytime and at nighttime, mir-106b and mir-96 in vitreal samples and mir-142-5p and mir-219 in blood. Results are preliminary and limited to the small sample set. Future studies on more samples and with additional markers are needed to further elucidate the role of miRNA profiling in postmortem contexts and how useful they would be as “chronobiomarkers” for time of death determination

2015 - investigation of erthquake related deaths using post-mortem multi detector computed tomography [Abstract in Atti di Convegno]
Santunione, Anna Laura; Perini, Andrea; Radheshi, Erjon; Amorico, Maria Grazia; Tata, Cristina; Torricelli, Pietro; Silingardi, Enrico
abstract

Purpose: Post-mortem Multi-Detector Computed Tomography (MDCT) is now recognized as a valuable adjunct medicolegal tool. Beside its application for identification purposes, MDCT is used to assist pathologists in determining cause of death. Compared to conventional radiography MDCT offers advantages in detecting blunt force injury, and can quickly provide a guide to lethal injuries. Therefore, the use of MDCT for earthquake-related deaths is an obvious choice, as blunt force injuries are common in such victims. The purpose of this study was to evaluate the impact of MDCT on the assessment of causes of death, in a case series of fatal injuries after the 2012 Modena earthquake. Methods and materials: 12 medicolegal cases underwent full-body CT-scan and external examination. The circumstances of death were collected and reviewed. Conventional autopsy was not authorized by the local Prosecutor for all cases. Results: In all cases, post-mortem MDCT and external examination revealed lesions consistent with fatal blunt force injuries, and the absence of contrary evidence that could support another cause of death. These findings together with the circumstantial data were sufficient to assess cause and manner of death. Conclusions: The results of this study confirm that post-mortem MDCT provides an important contribution to determining cause of death, especially when autopsy is not performed. Therefore, radiologists with experience in post-mortem imaging are needed to support forensic pathologists in establishing causes of death, without necessarily having to perform conventional autopsy.

2014 - Splenic hypereosinophilia in anaphylaxis-related death: different assessments depending on different types of allergens? [Articolo su rivista]
Reggiani Bonetti, Luca; Maccio, Livia; Trani, Nicoletta; Radheshi, Erjon; Palmiere, Cristian
abstract

The aim of this study was to evaluate splenic eosinophil and mast cell accumulation using pagoda red stain in a series of anaphylaxis-related deaths that underwent medico-legal investigations. Our goal was to assess whether fatal reactions to insect stings, intramuscularly administered antibiotics and intravenously injected contrast media are responsible for specific patterns of eosinophil and mast cell accumulation. Two study groups were prospectively formed, an anaphylaxis-related death group and a control group. Autopsy, histology (haematoxylin-eosin stain, pagoda red stain and immunohistochemistry using anti-tryptase antibodies), toxicology and postmortem biochemistry (beta-tryptase, total IgE and specific IgE) were performed in all cases. All tested parameters (spleen weight, beta-tryptase and total IgE levels as well as eosinophil, mast cell and degranulated mast cell numbers in the spleen) were significantly higher in the anaphylaxis-related death group. No statistically significant differences were observed among the various groups (intramuscular antibiotic injection, intravenous contrast medium administration and stinging insects) in any combination, suggesting that mast cell and eosinophil accumulation in the spleen during anaphylaxis does not have any specific pattern related to the triggering allergen. Despite a lower sensitivity than immunohistochemical staining in discriminating eosinophil and mast cells, pagoda red stain allowed these cells to be identified and could therefore be proposed as a low-cost, first-line diagnostic procedure in those situations where immunohistochemistry is not systematically performed or cannot be carried out.

2010 - Y-STR variation in Albanian populations: implications on the match probabilities and the genetic legacy of the minority claiming an Egyptian descent. [Articolo su rivista]
Ferri, Gianmarco; Tofanelli, S; Alù, M; Taglioli, L; Radheshi, Erjon; Corradini, Beatrice; Paoli, G; Capelli, C; Beduschi, Giovanni
abstract

Y chromosome variation at 12 STR (the Powerplex(R) Y system core set) and 18 binary markers was investigated in two major (the Ghegs and the Tosks) and two minor (the Gabels and the Jevgs) populations from Albania (Southern Balkans). The large proportion of haplotypes shared within and between groups makes the Powerplex 12-locus set inadequate to ensure a suitable power of discrimination for the forensic practice. At least 85% of Y lineages in the Jevgs, the cultural minority claiming an Egyptian descent, turned out to be of either Roma or Balkan ancestry. They also showed unequivocal signs of a common genetic history with the Gabels, the other Albanian minority practising social and cultural Roma traditions.

2009 - Slow and fast evolving markers typing in Modena males (North Italy) [Articolo su rivista]
Ferri, Gianmarco; Alu', Milena; Corradini, Beatrice; Radheshi, Erjon; Beduschi, Giovanni
abstract

One hundred thirty male individuals, strictly selected for their geographical origin and for typical regional surnames were submitted to the analysis. 17 STRs (short tandem repeats) loci and 19 SNPs binary markers (single nucleotide polymorphisms) of male-specific region of the Y chromosome (MSY) were typed to well characterize the selected population of Modena province. The availability of joint distribution of MSY haplotypes and haplogroup frequencies is becoming an important tool for both human evolutionary studies and forensic investigation, but large databases of complete Y-lineages are needed for a better understanding of the power of the combined use of Y-specific polymorphisms. A total of 129 haplotypes and 9 haplogroups were found and R1b haplogroup with a frequency of 67.7% was the most frequent, as expected because of the geographical location of the sample (Northwestern Italy). The Modena Y-lineages (STRs and SNPs independently) were also compared with published data of other neighbouring populations' samples.