SUMMARYProblems of logistics, compliance and drug resistance point to an urgent need for immunotherapeutic strategies capable of shortening the current six month antibiotic regimens used to treat tuberculosis. One potential immunotherapeutic agent is transfer factors. Transfer factors (TF) are low molecular weight dialysable products from immune cells which transmit the ability to express delayed-type hypersensitivity (DTH) and cell mediated immunity from sensitized donors to nonimmune recipients. In this study we determined the efficiency of TF as immunotherapy to treat experimental tuberculosis. When BALB/c mice are infected via the trachea with Mycobacterium tuberculosis H37Rv there is an initial phase of partial resistance dominated by Th-1 type cytokines plus tumour necrosis factor-alpha (TNF a ) and the inducible isoform of nitric oxide synthase (iNOS), followed by a phase of progressive disease characterized by increasing expression of IL-4, diminished expression of TNF a and iNOS, and low DTH. Animals in this late progressive phase of the disease (day 60) were treated with different doses of TF (one injection per week) obtained from spleen cells when the peak of immune protection in this animal model is reached (day 21), or with different doses of TF from peripheral leucocytes of PPD + healthy subjects. We show here that the treatment with murine or human TF restored the expression of Th-1 cytokines, TNF a and iNOS provoking inhibition of bacterial proliferation and significant increase of DTH and survival. This beneficial effect was dose dependent. Interestingly, murine TF in combination with conventional chemotherapy had a synergistic effect producing significant faster elimination of lung bacteria loads than chemotherapy alone.

Background and Aims Clinical trials and real-life studies with ustekinumab in Crohn's disease (CD) have shown a good efficacy and safety profile. However, these data are scarcely available in elderly patients. Therefore, we aim to assess the effectiveness and safety of ustekinumab in elderly patients with CD. Methods Elderly patients (>60 years old) from the prospectively maintained ENEIDA registry treated with ustekinumab due to CD were included. Every patient was matched with two controls under 60 years of age, according to anti-TNF use and smoking habit. Values for the Harvey-Bradshaw Index (HBI), endoscopic activity, C-reactive protein (CRP), and faecal calprotectin (FC) were recorded at baseline and at weeks 16, 32 and 54. Results 648 patients were included, 212 elderlies. Effectiveness was similar between young and elderly patients during the follow-up. Steroid-free remision was similar at week 16 (54.6 vs 51.4%, p=0.20), 32 (53.0% vs 54.5%, p=0.26) and 54 (57.8% vs 51.1%, p=0.21). Persistence of ustekinumab as maintenance therapy was similar in both age groups (log-rank test; p=0.91). There was no difference in the rate of adverse effects (14.2% vs 11.2%, p=0.350), including severe infections (7.1% vs 7.3%, p=1.00), except for the occurrence of de novo neoplasms, which was higher in older patients (0.7% vs 4.3%, p= 0.003). Conclusions Ustekinumab is as effective in elderly patients with CD, as it is in non-elderly. Safety profile seems to be also similar but for a higher rate of de novo neoplasms, probably related to the age of the elderly patients.

in this study, the CBD was eventually reached with the insertion of a plastic pancreatic stent after an unintentional GW passage into the pancreatic duct while attempting a CBD cannulation. No adverse events were observed following pancreatic stent insertion.

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