Pellumb Zalla

Prof. Pellumb Zalla


Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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12 March 2023 in Animals
Verified
Journal Article
Open access
PDF file
EAEgon Andoni
Egon Andoni
SCSonila Cocoli
Sonila Cocoli
Dino MiragliaDino Miraglia
Dino Miraglia
Claudia Maria BalzarettiClaudia Maria Balzaretti
Claudia Maria Balzaretti
Gabriele BrecchiaGabriele Brecchia
Gabriele Brecchia
Marta CastricaMarta Castrica
Marta Castrica
In June 2014, Albania was granted EU candidate status, thus starting a process of compliance with the membership criteria. In this context, a modern meat inspection approach in line with the European legislation was applied to a pig slaughterhouse in northern Albania in order to investigate the ante-mortem (AM) and post-mortem (PM) conditions and the relationship between these findings. For this purpose, 3930 pigs divided into 35 batches were evaluated over a 3-month period. The most frequent AM conditions recorded were tail lesions and dyspnea (9.1%), followed by skin (8.9%) and ear lesions (8.5%), while in the PM inspections, pleuritis was the most frequently observed condition (10.2%), followed by pneumonia (8.5%), liver alterations (5.7%), milk spot liver (3.8%), and pericarditis (3.3%). With the exception of liver alterations, the other PM lesions mentioned were positively associated with lesions on the ears (OR = 1.036; p < 0.001) and skin (OR = 1.026; p = 0.011) and dyspnea (OR = 1.021; p = 0.005), confirming the link between these variables and the health and welfare conditions of pigs on farms. Overall, the evidence that emerged from this Albanian slaughterhouse can be considered in line with other European contexts, especially in light of the considerable variability in the data present in the literature.

27 June 2025 in Animals
Verified
Journal Article
Open access
PDF file
Marta CastricaMarta Castrica
Marta Castrica
EAEgon Andoni
Egon Andoni
AQAlda Quattrone
Alda Quattrone
XKXhelil Koleci
Xhelil Koleci
EOEnkeleda Ozuni
Enkeleda Ozuni
Stella AgradiStella Agradi
Stella Agradi
Trace elements, which may have harmful health effects, are present in the environment at varying concentrations. In Albania, data on exposure risks are limited. This study aimed to assess and compare the concentrations of various trace elements (aluminum, arsenic, boron, calcium, cadmium, chromium, copper, iron, potassium, magnesium, manganese, nickel, lead, and zinc) in the hair of cattle and sheep raised in Central Albania (Tirana and Elbasan Counties). Hair samples were collected from 25 cattle and 25 sheep per county and analyzed using inductively coupled plasma–optical emission spectroscopy. Zinc concentrations were significantly higher in cattle than in sheep (p = 0.029), while no differences were observed between counties (p > 0.05), indicating similar environmental conditions. Copper (17.84, 95%CI: 13.63–16.34 and 15.84, 95%CI: 14.00–17.69 mg/kg in cattle, and 15.58, 95%CI: 13.61–17.56 and 14.14, 95%CI: 12.07–16.20 mg/kg in sheep, in Elbasan and Tirana County, respectively), arsenic (2.08, 95%CI: 1.45–1.21 and 1.51, 95%CI: 1.19–1.81 mg/kg in cattle, 1.73, 95%CI: 1.38–2.07 and 1.39, 95%CI: 1.02–1.75 mg/kg in sheep, in Elbasan and Tirana County, respectively), and cadmium (2.36, 95%CI: 1.63–2.07 and 2.00, 95%CI: 1.68–2.32 mg/kg in cattle, 2.00, 95%CI: 1.59–2.40 and 1.71, 95%CI: 1.39–2.02 mg/kg in sheep, in Elbasan and Tirana County, respectively) concentrations exceeded the values reported in the literature, likely due to contamination from local mining and metal processing activities. Further research is needed to determine the sources of contamination and assess potential risks to animal and human health.

2 April 2025 in Antioxidants
Verified
Journal Article
Open access
PDF file
AQAlda Quattrone
Alda Quattrone
Nour Elhouda FehriNour Elhouda Fehri
Nour Elhouda Fehri
Stella AgradiStella Agradi
Stella Agradi
Laura MenchettiLaura Menchetti
Laura Menchetti
OBOlimpia Barbato
Olimpia Barbato
Giulio CuroneGiulio Curone
Giulio Curone
Lipopolysaccharide (LPS)-induced inflammation impairs sperm function; however, its impact on ejaculated rabbit sperm remains unexplored. This dose-response study aims to determine the LPS concentration that negatively affects sperm motility in vitro, while also providing the first identification of TLR4 localization on rabbit spermatozoa. Additionally, it evaluates malondialdehyde (MDA) levels in seminal plasma as an indicator of oxidative stress. Sperm motility was analyzed using computer-assisted sperm analysis (CASA) after incubation with increasing LPS concentrations (0, 50, 100, 200, 400, 600, and 800 µg/mL) at multiple time points (0, 1, 2, and 4 h). LPS doses ≥ 400 µg/mL significantly reduced progressive and non-progressive motility, as well as curvilinear velocity (all p < 0.001), while increasing the proportion of static spermatozoa (p < 0.05). Receiver operating characteristic (ROC) analysis identified 300 µg/mL as the threshold dose for motility decline. Immunofluorescence revealed TLR4 localization in the midpiece of sperm tails, with weak labeling in control samples and a marked increase after 4 h of incubation with 400 μg/mL LPS. MDA levels were assessed using the thiobarbituric acid reactive substances (TBARS) assay with a colorimetric kit, showing no significant effect of LPS treatment. No correlation was found between MDA and other semen parameters. ccThese findings identify TLR4 on rabbit sperm for the first time and establish a threshold LPS dose for future in vitro studies.

1 July 2025 in Access Microbiology
Verified
Journal Article
Open access
XKXhelil Koleci
Xhelil Koleci
PZPellumb Zalla
Pellumb Zalla
MSMAJLIND SULCE
MAJLIND SULCE
TRTristan Russell
Tristan Russell
GMGerald Muça
Gerald Muça
SFSéamus Fanning
Séamus Fanning
Shiga toxin-producing Escherichia coli (STEC) poses a significant public health risk due to its zoonotic potential and association with foodborne outbreaks. This study investigates the presence of STEC in faecal samples collected from sheep, focusing on bacteriological methods for isolation and preliminary characterization. Growth on selective agar showed that 90 of 140 faecal samples were positive for STEC. The total average prevalence was 64.3% (95% CI 56.1–71.7%). The highest prevalence was 71.4% (54.9–83.7%), recorded in summertime, while the lowest was 51.4% (35.6–67%) in the autumn. Selected isolates were found to be resistant to commonly used antibiotics, with isolates expressing a resistant phenotype to two, three or more of the tested antibiotics. Based on the Biocheck.UGent system for risk-based assessment of farm biosecurity, the total, internal and exterior average farm biosecurity scores were substantially lower than the world average.

14 February 2025
Verified
Preprint
Open access
XKXhelil Koleci
Xhelil Koleci
PZPellumb Zalla
Pellumb Zalla
MSMAJLIND SULCE
MAJLIND SULCE
TRTristan Russell
Tristan Russell
GMGerald Muça
Gerald Muça
SFSéamus Fanning
Séamus Fanning
Shiga toxin-producing Escherichia coli (STEC) poses a significant public health risk due to its zoonotic potential and association with foodborne outbreaks. This study investigates the presence of STEC in fecal samples collected from sheep, focusing on bacteriological methods for isolation and preliminary characterization. Growth on selective agar showed 90 of 140 fecal samples were positive for STEC. The total average prevalence was 64.3% (95% CI 56.1 to 71.7%). The highest prevalence was 71.4% (54.9 to 83.7%) recorded in summertime, while the lowest was 51.4% (35.6 to 67%) in the autumn. Selected isolates were found to be resistant to commonly used antibiotics, with isolates expressing a resistant phenotype to two, three or more of the tested antibiotics. Based on the Biocheck.UGent system for risk-based assessment of farm biosecurity, the total, internal, and exterior average farm biosecurity scores were substantially lower than the world average.

22 May 2025
Verified
Preprint
Open access
XKXhelil Koleci
Xhelil Koleci
PZPellumb Zalla
Pellumb Zalla
MSMAJLIND SULCE
MAJLIND SULCE
TRTristan Russell
Tristan Russell
GMGerald Muça
Gerald Muça
SFSéamus Fanning
Séamus Fanning
Shiga toxin-producing Escherichia coli (STEC) poses a significant public health risk due to its zoonotic potential and association with foodborne outbreaks. This study investigates the presence of STEC in fecal samples collected from sheep, focusing on bacteriological methods for isolation and preliminary characterization. Growth on selective agar showed 90 of 140 fecal samples were positive for STEC. The total average prevalence was 64.3% (95% CI 56.1 to 71.7%). The highest prevalence was 71.4% (54.9 to 83.7%) recorded in summertime, while the lowest was 51.4% (35.6 to 67%) in the autumn. Selected isolates were found to be resistant to commonly used antibiotics, with isolates expressing a resistant phenotype to two, three or more of the tested antibiotics. Based on the Biocheck.UGent system for risk-based assessment of farm biosecurity, the total, internal, and exterior average farm biosecurity scores were substantially lower than the world average.