Stem cell secretome treatment improves whole-body metabolism, reduces adiposity, and promotes skeletal muscle function in aged mice.

Aging coincides with the progressive loss of muscle mass and strength, increased adiposity, and diminished physical function. Accordingly, interventions aimed at improving muscle, metabolic, and/or physical health are of interest to mitigate the adverse effects of aging. In this study, we tested a stem cell secretome product, which contains extracellular vesicles and growth, cytoskeletal remodeling, and immunomodulatory factors. We examined the effects of 4 weeks of 2×/week unilateral intramuscular secretome injections (quadriceps) in ambulatory aged male C57BL/6 mice (22-24 months) compared to saline-injected aged-matched controls. Secretome delivery substantially increased whole-body lean mass and decreased fat mass, corresponding to higher myofiber cross-sectional area and smaller adipocyte size, respectively. Secretome-treated mice also had greater whole-body physical function (grip strength and rotarod performance) and had higher energy expenditure and physical activity levels compared to control mice. Furthermore, secretome-treated mice had greater skeletal muscle Pax7+ cell abundance, capillary density, collagen IV turnover, reduced intramuscular lipids, and greater Akt and hormone sensitive lipase phosphorylation in adipose tissue. Finally, secretome treatment in vitro directly enhanced muscle cell growth and IL-6 production, and in adipocytes, it reduced lipid content and improved insulin sensitivity. Moreover, indirect treatment with secretome-treated myotube culture media also enhanced muscle cell growth and adipocyte size reduction. Together, these data suggest that intramuscular treatment with a stem cell secretome improves whole-body metabolism, physical function, and remodels skeletal muscle and adipose tissue in aged mice.

Impact of the International Nosocomial Infection Control Consortium (INICC) multidimensional approach on rates of ventilator-associated pneumonia in intensive care units of two hospitals in Kuwait.

OBJECTIVE: To analyse the impact of the International Nosocomial Infection Control Consortium (INICC) multidimensional approach (IMA) on ventilator-associated pneumonia (VAP) rates in three intensive care units (ICUs) from two hospitals in Kuwait City from January 2014 to March 2015. DESIGN: A prospective, before-after study on 2507 adult ICU patients. During baseline, we performed outcome surveillance of VAP applying CDC/NHSN definitions. During intervention, we implemented the IMA through the INICC Surveillance Online System (ISOS), which included: (1) a bundle of infection prevention interventions; (2) education; (3) outcome surveillance; and (4) feedback on VAP rates and consequences. Logistic regression analysis was performed to estimate the effect of the intervention on VAP, controlling for potential bias. RESULTS: During baseline, 1990 mechanical ventilator (MV)-days and 14 VAPs were recorded, accounting for 7.0 VAPs per 1000 MV-days. During intervention, 9786 MV-days and 35 VAPs were recorded, accounting for 3.0 VAPs per 1000 MV-days. The VAP rate was reduced by 57.1% (incidence-density ratio = 0.51; 95% CI = 0.28-0.93; p = 0.042). Logistic regression showed a significant reduction in VAP rate during the intervention phase (OR = 0.39, 95% CI = 0.18-0.83), with 61% effectiveness. CONCLUSIONS: Implementing IMA through ISOS was associated with a significant reduction in the VAP rate in Kuwait ICUs.

Device-associated infection rates, bacterial resistance, length of stay, and mortality in Kuwait: International Nosocomial Infection Consortium findings.

BACKGROUND: To report the results of the International Infection Control Consortium (INICC) study conducted in Kuwait from November 2013-March 2015. METHODS: A device-associated health care-acquired infection (DA-HAI) prospective surveillance study in 7 adult, pediatric, and neonatal intensive care units (ICUs) using the U.S. Centers for Disease Control and Prevention's (CDC's) National Healthcare Safety Network (NHSN) definitions and INICC methods. RESULTS: We followed 3,732 adult and pediatric patients for 21,611 bed days and 671 neonatal patients for 4,515 bed days. In the medical-surgical ICUs, the central line-associated bloodstream infection (CLABSI) rate was 3.5 per 1,000 central line days, the ventilator-associated pneumonia (VAP) rate was 4.0 per 1,000 mechanical ventilator days, and the catheter-associated urinary tract infection (CAUTI) rate was 3.3 per 1,000 urinary catheter days; all of them were lower than INICC rates (CLABSI: 4.9; VAP: 16.5; and CAUTI: 5.3) and higher than NHSN rates (CLABSI: 0.9; VAP: 1.1; and CAUTI: 1.2). Resistance of Staphylococcus aureus to oxacillin was 100%, resistance of Acinetobacter baumannii to imipenem and meropenem was 77.6%, and resistance of Klebsiella pneumoniae to imipenem and meropenem was 29.4%. Extra length of stay was 27.1 days for CLABSI, 22.2 days for VAP, and 19.2 days for CAUTI in adult and pediatric ICUs. Extra crude mortality was 19.9% for CLABSI, 30.9% for VAP, and 11.1% for CAUTI in adult and pediatric ICUs. CONCLUSIONS: DA-HAI rates in our ICUs are higher than the CDC-NSHN rates and lower than the INICC international rates.

Weissella confusa: a rare cause of vancomycin-resistant Gram-positive bacteraemia.

We describe a case of bacteraemia caused by Weissella confusa in a 48-year-old male who was operated on for adenocarcinoma of the gastro-oesophageal junction and maintained on total parenteral nutrition. Blood cultures were positive for a vancomycin-resistant streptococcus-like organism which was identified as W. confusa by 16S rRNA gene sequencing.

Squamous cell carcinoma arising from perineal lesion in a familial case of Hidradenitis suppurativa.

Hidradenitis suppurativa (HS) is a chronic dermatologic disorder characterised by multiple vesiculopustular cutaneous lesions in skin. It sometimes express autosomal dominant mode of inheritance. In some patients, it can give rise to squamous cell carcinoma of skin. Unlike the usual marjolin's ulcer which develops in chronic scars, this disease carries a grave prognosis with high recurrence rate and mortality. Here we are reporting the case of a 40-year-old gentle man with hidradenitis suppurativa, who presented with squamous cell carcinoma in the perianal region, and had multiple family members affected with HS. A short history and review of literature are discussed. Squamous cell carcinoma arising from HS is a major therapeutic challenge. This malignancy carries very high rates of recurrence and mortality. Careful surveillance of the lesions of HS, especially occurring in perineal region is very important to diagnose secondary malignancies. Similarly, meticulous surgical excision with careful resection of all sinus tracks and frozen section examination of margins are very important to eradicate the disease.