Increased levels of acute-phase reactants and lymphopenia are predictors of disease severity in coronavirus disease 2019 . This study aimed to investigate the role of apoptosis in the etiology of lymphopenia in patients with COVID-19. This multicentered, prospective, and case-control study was conducted with polymerase chain reaction (+) severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) patients, and an age-gender-matched control group. Samples were taken at the time of diagnosis and analyzed via flow cytometry within 24 h. The participants' demographic data and initial laboratory tests were also recorded. In total, 33 patients with COVID-19 (mean age = 45.4 ± 17.2) and 25 controls (mean age = 43.4 ± 17.4) participated in the study. All patients were identified as having mild (16), moderate (5), or severe (12) disease severity. Both early and late apoptotic cells in B and T lymphocytes were increased in all patients with COVID-19 (p < .05). Early apoptotic (EA) B and T lymphocytes were also higher in severe cases compared to mild cases (p = .026). There was no significant difference between lymphopenia and apoptosis in patients with COVID-19. However, patients with lymphopenia (n = 14) and severe COVID-19 (p = .013) had increased EA T lymphocytes. This study's results show that B and T lymphocytes' apoptosis increases in patients with COVID-19. In addition, enhanced T lymphocyte apoptosis is associated with disease severity in lymphopenic patients with COVID-19.
Sphingomonas paucimobilis, is a yellow-pigmented, aerobic, non fermentative, gram negative motile bacillus. S. paucimobilis which is widely found in nature and hospital environments rarely cause serious or life threatening infections. In this report, a case of hospital acquired bloodstream infection due to S. paucimobilis in a patient with Down syndrome who was on treatment for presumed pneumonia is presented.A one year-old child patient who was a known case of Down syndrome and had previously experienced cardiac surgery was hospitalized and treated for pneumonia. On the 12th day of hospitalization, blood cultures were taken because of a high body temperature. One of the blood cultures was positive for gram-negative rods. After 48 hour of incubation, the sub-cultures on blood agar medium yielded pure growth of a yellow, non-fermentative, gram-negative, rod-shaped bacterium. The microorganism was positive for oxidase, and esculin hydrolysis, while negative for urea and nitrate reduction, citrate utilisation and motility. The isolate had been identified as S. paucimobilis by using Vitek 2 system. The antibiotic susceptibility test was also performed with the same system and the strain was found to be susceptible to piperacillin-tazobactam and other antibiotics. Treatment with intravenous piperacilin-tazobactam (150 mg/kg/day) was initiated. He responded well to the treatment and was discharged after 10 days. This case is reported to emphasize that S. paucimobilis should be kept in mind as a nosocomial infectious agent in patients with Down syndrome and immunosuppressive patients and the infections should be treated according to the sensitivity test results.
Demodicosis is an ectoparasitic cutaneous infestation of pilosebaceous unit caused by Demodex mites. Demodex spp. are considered to be pathogenic when they increase in number and infect dermis.They can be the cause of diseases such as pityriasis folliculorum, papulopustular rosacea, granulomatous rosacea, inflammatory papule, acne vulgaris, perioral dermatitis, blepharitis and folliculitis. These mites can be found in most mammals including human. Canine and feline demodicosis is a well-known example of severe dermatitis caused by the proliferation of Demodex mites. Dogs are one of the most popular pets worldwide with well-being feeling to their owners. However, they may cause a health risk to humans due to their zoonotic diseases potential. Demodicosis is a severe and prevalent dermatologic disease in dogs. In this case report, a Demodex case thought to be related with a dog infestation was presented. A twenty-year-old girl student who feeds a Miniature Pinscher crossbred dog in her house for a while noticed common itchy papulopustular lesions, incrustation and some alopecic loci in her dog and admitted to Selçuk University Faculty of Veterinary Medicine, Department of Parasitology. Itchy papules and pustules were also observed in dog's owner face and arm about three or four weeks later. Skin scrapings and hair samples were taken from the patient and the dog and examined with light microscope. Adult and egg forms of Demodex spp. were detected in both patient and dog specimens in microscopic examination. Ivermectin treatment was recommended as 0.2 mg/kg for the dog. The owner of the dog was sent to a dermatology clinic and topical permethrin was recommended for the treatment. At the end of the first month the dog was controlled again, a whole clinical and microscopic improvement was observed and all of the lesions were disappeared for both the dog and its owner. This demodicosis case, thought to originate from a dog, is a rare condition because of Demodex mites are known to be highly host specific and not a zoonotic parasite. Although host specific cross infections between humans and animals have been rarely reported, D. canis was determined to be more transmissible across species than the other Demodex mites as indicated in the literature. As a result, it is necessary and important to keep in mind about Demodex spp. infestation in patients with skin complaints and pet feeding.
ÖZTüm dünyada önemli bir nozokomiyal patojen olan Pseudomonas suşlarında gittikçe artan oranlarda karbapenem direncine rastlanmaktadır. Karbapenem direncinden çoğunlukla metallo-beta-laktamaz (MBL) ve moleküler sınıf D'de yer alan karbapenemleri hidrolize eden oksasilinaz enzimleri sorumlu tutulmaktadır. MBL enzimlerine sıklıkla Pseudomonas'larda rastlanırken; sınıf D oksasilinazların tamamına yakını karbapeneme ve çok ilaca dirençli olan Acinetobacter baumannii '
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