Eugenol; Effective Anthelmintic Compound against Foodborne Parasite <i>Trichinella spiralis</i> Muscle Larvae and Adult

Trichinosis is a foodborne parasitic infection that results from ingestion of raw or under-cooked pork meat infected by parasitic nematode Trichinella spiralis with cosmopolitan distribution. Anthelmintic drugs are used to eliminate intestinal adult parasites and larvae as well as tissue-migrating newborn and in-turn encysted larvae. However, eliminating the infection or averting it from transmission is rarely possible using anthelmintic groups of benzimidazole derivatives. Eugenol (EO) is the main extracted constituent of clove oil (80–90%) and is responsible for its aroma. Therefore, this study aims to investigate the effect of eugenol on both adult and muscle larvae of Trichinella spiralis in vitro. IC50 for different concentrations of eugenol were calculated for both muscle larvae (187.5 µM) and adults (190.4 µM) to determine the accurate dose range. Both the nematode stages were cultured in the commonly used RPMI-1640 media in 24-well plates. Different concentrations of eugenol (122, 305, 609, 1218, and 3045 µM) were administered in different groups of larvae/adults. The parasitological parameters were monitored after 1, 3, 6, 10, 24 h for each EO concentration in concomitant with the control groups. Reference chemotherapeutic anthelminthic drug “albendazole” (at dose 377 µM) was experimentally grouped in triplicates as positive control and the untreated as negative control, respectively. Mortality was observed where time-dependent adult stages were less susceptible than muscle larvae. Eugenol achieved 100% efficacy against T. spiralis larvae and killed the total larvae after 10 and 24 h at concentrations of 1218 and 3045 µM, the same as albendazole’s effect on the positive control group. In regard to adults, resembling muscle larvae (ML), a significant effect of both concentrations at p p < 0.0001. Furthermore, the treated/untreated adult and muscle larvae were collected and processed for scanning electron microscopy (SEM). Massive destruction of parasite burden was observed, especially at high concentrations (1218 and 3045 µM). In addition, complete and mild loss in cuticular striation in both the treated and positive controls were confirmed by SEM, respectively, in comparison to the control untreated group

Clinical significance of serum B cell chemokine (CXCL13) in early rheumatoid arthritis patients

Background: The diagnosis of early rheumatoid arthritis (RA) is challenging. B-cell chemokine (CXCL13) plays a critical role in the disease pathogenesis. Aim of the work: To assess the diagnostic value of serum CXCL13 in early RA and compare it with rheumatoid factor (RF) and anti-cyclic citrullinated peptide (anti-CCP) antibodies. Patients and methods: The study included 60 RA patients; 30 early, 30 established RA and 30 healthy controls. The modified health assessment questionnaire (MHAQ), modified Sharp-van der Heijde score (MSS) and disease activity score (DAS28) were assessed in RA patients. RF, anti-CCP and serum level of CXCL13 were measured. Results: Patients had a mean age of 39 ± 7.4 years and disease duration of 4.4 ± 5.7 years; they were 46 females and 12 males (F:M 3.8:1). Serum CXCL13 was significantly higher in early (191.7 ± 74.4 pg/ml) compared to established (136.4 ± 79 pg/ml) RA (p = 0.007) which were not observed with RF and anti-CCP; both were higher than in control (30.4 ± 13.5 pg/ml) (p < 0.001). In early RA, the frequencies of CXCL13, RF and anti-CCP positivity were 90%, 73.3% and 56.7% while in the established cases the frequencies were 36.7%, 66.7% and 63.3% respectively. CXCL13 significantly correlated with DAS28 (early: 0.49, p = 0.006; established: r = 0.38, p = 0.04) but not with MHAQ or MSS. The CXCL13 significantly correlated with both the RF and anti-CCP in both early and established cases (p < 0.001). Conclusion: CXCL13 is an important for the diagnosis of early RA with a superior diagnostic performance compared to RF and anti-CCP. It may also be considered a potential biomarker of disease activity. Keywords: Rheumatoid arthritis, Diagnosis, CXCL13, Anti-CCP, Rheumatoid facto

COVID-19 and liver diseases

Abstract Coronavirus causes an outbreak of viral pneumonia that spread throughout the world. Liver injury is becoming more widely recognized as a component of the clinical picture of COVID-19 infection. Hepatitis with serum ALT elevation has been reported in up to half of patients. Patients with CLD were at a higher risk of decompensation with liver failure, hospitalization, and mortality. The percentage of acute liver injury (ALI) varied from 5 to 28%. COVID-19 hinders HCV elimination by 2030. It is recommended to continue treatment of chronic HCV and chronic HBV if already receiving treatment. Consider using antiviral therapy to prevent viral flare-ups in patients with occult or resolved HBV and COVID-19 who are receiving immunosuppressive agents. Patients with AIH do not have an increased risk of adverse outcomes even in high-risk areas. There is an association between MAFLD and disease progression. Patients with any type of cancer are at a higher risk of infection and are more likely to develop more severe clinical outcomes. Most societies advise against immunosuppressant modifications in patients with mild COVID-19, whereas in rare cases such as severe lymphopenia, worsening pneumonia, or bacterial or fungal superinfection, reduction or discontinuation of antiproliferative agents and lymphocyte-depleting therapies has been suggested

Long Term Study of Protective Mechanisms of Human Adipose Derived Mesenchymal Stem Cells on Cisplatin Induced Kidney injury in Sprague-Daweley Rats

Background/Aims: Long-term evaluation of cisplatin induced nephrotoxicity and the probable renal protective activities of stem cells are lacking up until now. We evaluated the early and long-term role of human adipose derived mesenchymal stem cells (ADMSCs) in prevention or amelioration of cisplatin induced acute kidney injury (AKI) in Sprague-Dawley rats. For this, we determined the kidney tissue level of oxidative stress markers in conjugation with a renal histopathological scoring system of both acute and chronic renal changes. Methods: This study used eighty Sprague-Dawley (SD) rats weighing 250-300g. They were assigned into four equal groups (each group n=20): (I) Negative control group, rats injected with single dose of 1 ml normal saline. (II) Positive control cisplatin, rats injected with a single dose of 5 mg/kg I.P in 1 ml saline. (III) Cisplatin and culture media group, rats injected with 0.5 ml of culture media single dose into the tail vein and (IV) Cisplatin and ADMSCs group, rats injected with a single dose of 0.5 ml of culture media containing 5 x106ADMSCs into the tail vein one day after cisplatin administration. Each main group was further divided according to the timing of sacrifice into four subgroups (each subgroup n=5). Rats in the subgroup A were sacrificed after 4 days; subgroup B were sacrificed after 7 days; subgroup C were sacrificed after 11 days; and subgroup D were sacrificed after 30 days. Before sacrifice, 24 hrs.-urine was collected using a metabolic cage. Renal function was evaluated through blood urea nitrogen (BUN), serum creatinine and creatinine clearance. Kidney tissue homogenate oxidative stress parameters, Malondialdehyde (MDA), Superoxide dismutase (SOD) and Glutathione (GSH) were determined. In addition, histopathological analysis for active injury, regenerative and chronic changes was performed. Results: ADMSCs were characterized and their capability of differentiation was proved. Cisplatin induced a significant increase in plasma creatinine and tissue MDA and induced a decrease in SOD, GSH and creatinine clearance. ADMSCs attenuated these changes. Cisplatin resulted in prominent histopathological changes in the term of tubular necrosis, atrophy, inflammatory cells infiltration and fibrosis. ADMSCs significantly lowered the injury score at day 4, 7, 11 and 30 with marked regenerative changes starting from day 4 and limited fibrotic score at day 30. Conclusion: ADMSCs have both protective and regenerative abilities with consequent limitation of the development of renal fibrosis after the cisplatin induced acute tubular necrosis, largely through an anti-oxidative activity

Correlation of Spleen Stiffness Measured by Acoustic Radiation Force Impulse Imaging (ARFI) with Hepatic Venous Pressure Gradient (HVPG) in the Prediction of Esophageal Varices (EVs) Grades in Cirrhotic Patients

Background: measurement of spleen stiffness (SS) by ARFI may predict the presence of EVs. Aim: To assess the correlation of SS measured by ARFI as noninvasive assessment with HVPG in the prediction of presence and grades of EVs in cirrhotic patients. Methods: 30 patients with post HCV liver cirrhosis who underwent biochemical tests, abdominal ultrasound (US) , Doppler , Upper gastrointestinal endoscopy (UGE), liver stiffness (LS) and spleen stiffness (SS) measurements using ARFI elastography and HVPG. Results: statistically significant difference was found between EVs presence and grades in relation to HVPG. In contrary no statistically significant difference was found between EVs presence and grades in relation to SS. Conclusion: HVPG had good significant positive correlation with presence and grades of EVs. There was no significant correlation between non-invasive parameters including the SS and LS (by ARFI) and presence or grades of EVs. There was no significant correlation between HVPG and SS and LS (by ARFI)