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1.
J Foot Ankle Surg ; 55(2): 260-2, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-25128306

RESUMEN

Guillain-Barré syndrome is a serious disorder that occurs when the body's immune system mistakenly attacks the peripheral nervous system. This leads to nerve inflammation and damage that can cause muscle weakness and/or paralysis, including foot drop. Therapy ranges from supportive measures, such as physical therapy, to surgical intervention. It appears from the published data that these patients, generally, have been left to their own devices, because no known cure is available, necessitating reliance on others for their daily activities and ambulation. We present a unique surgical option, with a follow-up period of 24 months, in which bilateral subtalar and ankle fusion allowed unassisted ambulation to a patient who might otherwise have never walked again.


Asunto(s)
Articulación del Tobillo/cirugía , Trastornos Neurológicos de la Marcha/cirugía , Síndrome de Guillain-Barré/cirugía , Articulación Talocalcánea/cirugía , Anciano , Artrodesis , Trastornos Neurológicos de la Marcha/etiología , Síndrome de Guillain-Barré/complicaciones , Humanos , Masculino
2.
Med Princ Pract ; 22(3): 245-9, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23147072

RESUMEN

OBJECTIVE: This study was undertaken to determine the frequency of Panton-Valentine leukocidin (PVL)-producing Staphylococcus aureus among strains isolated in our laboratory and to study the association of PVL-positive strains with clinical disease. MATERIALS AND METHODS: A total of 291 S. aureus isolates obtained from different clinical specimens from June 1, 2009, to March 31, 2010, at the Farwania Hospital Laboratory were investigated for antimicrobial susceptibility, carriage of genes for PVL, and SCCmec elements. Antimicrobial susceptibility testing was performed by standard methods. The presence of mecA genes for PVL SCCmec typing was determined by PCR. RESULTS: Of the 291 S. aureus isolates, 89 (30.6%) were methicillin-resistant S. aureus (MRSA), whereas 202 (69.4%) were methicillin susceptible (MSSA). Genes for PVL were detected in 13 (14.6%) and 24 (12.0%) of the MRSA and MSSA isolates, respectively. The majority of the PVL-producing MRSA and MSSA were isolated from 12 (30.7%) and 19 (21.8%) cases of skin and soft tissue infections (SSTI), respectively. Although both MSSA and MRSA strains were uniformly susceptible to rifampicin, teicoplanin, and vancomycin, multidrug resistance was observed among PVL-producing and nonproducing MRSA isolates. Both MRSA types carried SCCmec type III, IV, IVc, and V genetic elements. CONCLUSION: This study revealed the presence of genes for PVL in both MSSA and MRSA, associated mostly with SSTI and respiratory tract infections, supporting previous observations that PVL production is widespread among S. aureus strains obtained from different clinical sources.


Asunto(s)
Toxinas Bacterianas/aislamiento & purificación , Exotoxinas/aislamiento & purificación , Leucocidinas/aislamiento & purificación , Staphylococcus aureus/aislamiento & purificación , Antibacterianos/farmacología , Proteínas Bacterianas/genética , Toxinas Bacterianas/genética , Técnicas Bacteriológicas , ADN Bacteriano/genética , Exotoxinas/genética , Femenino , Humanos , Kuwait/epidemiología , Leucocidinas/genética , Masculino , Staphylococcus aureus Resistente a Meticilina/aislamiento & purificación , Proteínas de Unión a las Penicilinas , Infecciones del Sistema Respiratorio/microbiología , Infecciones Cutáneas Estafilocócicas/microbiología , Staphylococcus aureus/enzimología , Staphylococcus aureus/genética
3.
Antibiotics (Basel) ; 10(10)2021 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-34680830

RESUMEN

Following a surge in the prevalence of chloramphenicol-resistant methicillin-resistant Staphylococcus aureus (MRSA) in Kuwait hospitals, this study investigated the genotypes and antibiotic resistance of the chloramphenicol-resistant isolates to ascertain whether they represented new or a resurgence of sporadic endemic clones. Fifty-four chloramphenicol-resistant MRSA isolates obtained in 2014-2015 were investigated. Antibiotic resistance was tested by disk diffusion and MIC determination. Molecular typing was performed using spa typing, multilocus sequence typing, and DNA microarray. Curing and transfer experiments were used to determine the genetic location of resistance determinants. All 54 isolates were resistant to chloramphenicol (MIC: 32-56 mg/L) but susceptible to florfenicol. Two chloramphenicol-resistance determinants, florfenicol exporter (fexA) and chloramphenicol acetyl transferase (cat), were detected. The fexA-positive isolates belonged to CC5-ST627-VI-t688/t450/t954 (n = 45), CC5-ST5-V-t688 (n = 6), whereas the cat-positives isolates were CC8-ST239-III-t037/t860 (n = 3). While cat was carried on 3.5-4.4 kb plasmids, the location of fexA could not be established. DNA sequencing of fexA revealed 100% sequence similarity to a previously reported fexA variant that confers chloramphenicol but not florfenicol resistance. The resurgence of chloramphenicol resistance was due to the introduction and spread of closely related fexA-positive CC5-ST5-V and CC5-ST627-VI clones.

4.
Infect Drug Resist ; 13: 617-626, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32110072

RESUMEN

PURPOSE: Methicillin-resistant S. aureus (MRSA) belonging to clonal complex 15 (CC15-MRSA) is rare among clinical isolates with few reports from retail camel meat and human patients. This study investigated the genetic relatedness of CC15-MRSA isolated for the first time from patients in Kuwait hospitals. METHODS: Antibiotic susceptibility was tested by the disk diffusion method. Minimum inhibitory concentration was determined using Etest strips. Molecular typing was performed using spa tying, multilocus sequence tying and DNA microarray. RESULTS: Of 1327 MRSA isolates, 42 (3.1%) were identified as CC15-MRSA. The 42 isolates belonged to sequence type ST1535-harbored SCCmec type V and spa types t084 (36 isolates), t346 (3 isolates) and one of t114, t228 and t7583. All 42 isolates were resistant to gentamicin, kanamycin, fusidic acid and cadmium acetate; 38 isolates were resistant to tetracycline. The isolates harbored aacA-aphD and fusC that codes for gentamicin and fusidic acid resistance, respectively. Tet(K) was present in the tetracycline-resistant isolates. In addition, the 42 isolates carried inu(A) (lincosamide nucleotidyltransferase) that confers resistance to lincomycin and clindamycin although phenotypically susceptible to these antibiotics. The isolates belonged to accessory gene regulator type II and capsular polysaccharide group 8 but lacked genes for Staphylococcus enterotoxins, toxic shock syndrome toxin, collagen-binding adhesins and Panton-Valentine leukocidin. CONCLUSION: This study revealed the emergence and transmission of a previously rare MRSA clone among human patients in Kuwait hospitals and highlights the increasing infiltration of rare MRSA into the human population.

5.
Front Microbiol ; 10: 2912, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31969864

RESUMEN

Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) has been reported to colonize and cause infections in animals as well as in humans. LA-MRSA isolates have only recently been identified in patients admitted to Kuwait hospitals. This study was conducted to characterize LA-MRSA isolates obtained from patients admitted to Kuwait hospitals. A total of 202 (7.1%) of 2,823 MRSA isolates obtained from clinical samples in 2016 and 2017 in 11 public Kuwait hospitals were assigned to lineages previously known to be associated with livestock. They were characterized using antibiogram, spa typing, and DNA microarray for the assignment of clonal complexes (CCs) and detection of antibiotic resistance and virulence determinants. Identification as putative LA-MRSA clones was based on the molecular definition inferred from DNA microarray. The LA-MRSA isolates consisted of CC96 (N = 31), CC97 (N = 169), and CC398 (N = 2). Isolates belonging to CC96 and CC398 were resistant to erythromycin and clindamycin mediated by erm(A) and erm(C). CC97 isolates were multiresistant to gentamicin, kanamycin, erythromycin, clindamycin, tetracycline, chloramphenicol, fusidic acid, trimethoprim, and ciprofloxacin and harbored aacA-aphD, erm(A), erm(C), msr(A), tet(K), cat, fusC, and dfrS1. In total, 35 spa types were identified among the isolates. CC398 isolates consisted of t899 and t034. Ten spa types were identified among CC96 with t11822 (N = 13) as the most prevalent. CC97 consisted of 26 spa types with most belonging to t267 (N = 73) followed by t359 (N = 39). CC398 was composed of CC398-MRSA-IV and CC398-MRSA-V (PVL+). CC96 belonged to CC96-MRSA-IV and CC96-MRSA-IV (PVL+) Central Asian caMRSA/WA MRSA-119. CC97 consisted of six strains including CC97-MRSA-V (fusC +), CC97-MRSA-IV WA MRSA-54/63, CC97-MRSA-V, CC97-MRSA-(V+fus), CC97-MRSA-(mec VI+fus), and CC97-MRSA (mecV/VT+fus+ccrAB2). Whereas CC96 and CC97 isolates were identified in 2016 and 2017, CC398 isolates were detected only in 2016. This study identified four LA-MRSA clones among MRSA isolated from patients in Kuwait hospitals in 2016-2017 with CC97-MRSA-V (fusC +) as the dominant clone. The presence of LA-MRSA with different genetic backgrounds suggests its independent acquisition from different sources.

6.
PLoS One ; 13(4): e0195933, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29668723

RESUMEN

BACKGROUND: Frequent changes in the epidemiology of methicillin-resistant Staphylococcus aureus (MRSA) occurring worldwide demand regular surveillance to study their composition and distribution in healthcare facilities. We investigated the genotypic characteristics of MRSA obtained in Kuwait hospitals to better understand their clonal distribution. MATERIALS AND METHODS: A total of 1,327 MRSA isolates obtained from clinical samples in 13 Kuwait hospitals from 1 January to 31 December 2016 were investigated using antibiogram, SCCmec typing, spa typing and DNA microarray. RESULTS: The isolates belonged to six SCCmec types with the majority belonging to type IV (658; 49.5%) and type V (355; 26.7%). Two hundred and sixty-one spa types were identified with spa types t688, t304, t860, t127, t044, t311, t002, t223, t267, t019, t3841, t005, t084, t852, and t657 constituting 51.0% (n = 677) of the isolates. Among the 1,327 MRSA isolates, 102 (7.68%) isolates were identified as novel variants of internationally recognized MRSA clones. These 102 isolates were investigated further and belonged to 14 clonal complexes (CCs) with CC361 (32; 32.3%), CC30 (15; 14.7%), CC22 (13; 12.7%) and CC1 (11, 10.7%) as the dominant CCs. Eighty-one (79.4%) of the novel isolates harbored SCCmec IV or V+fusC composite genetic elements. Four isolates (3.9%) harbored unusual combinations of ccr and mec complexes comprising of CC6-MRSA [IV+fusC+ccrC], CC97-MRSA [V/VT+fusC+ccrAB2], CC121-MRSA [V/VT+fusC+ccrB4] and CC1-MRSA-pseudoSCCmec [class B mec+fusc+ccrAB1]. Forty-six (45.1%) of these isolates were positive for PVL and 89 (87.2%) were resistant to fusidic acid mediated by fusC. CONCLUSIONS: The study showed the emergence of novel variants of previously recognized MRSA genotypes with unusual genetic characteristics including high prevalence of PVL and fusidic acid resistance in Kuwait hospitals. This has added to the dynamic lists of known variations in MRSA genomes which can impose serious challenges for infection control and treatment of MRSA infections.


Asunto(s)
Infección Hospitalaria , Variación Genética , Genotipo , Staphylococcus aureus Resistente a Meticilina/clasificación , Staphylococcus aureus Resistente a Meticilina/genética , Infecciones Estafilocócicas/epidemiología , Infecciones Estafilocócicas/microbiología , Genes Bacterianos , Hospitales , Humanos , Kuwait/epidemiología , Tipificación de Secuencias Multilocus , Virulencia/genética
7.
J Infect Dev Ctries ; 11(6): 513-516, 2017 Jun 27.
Artículo en Inglés | MEDLINE | ID: mdl-30951513

RESUMEN

The isolation of a rare community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) strain from an infected dog bite wound is here reported. A 27-year old man presented with a deep open wound on his right hand caused by his dog's bite at the outpatient clinic of Infectious Disease Hospital (IDH), Kuwait. A wound swab was obtained for bacteriological culture and susceptibility testing. The wound culture yielded pure heavy growth of an MRSA isolate, designated IDH70, which was susceptible to vancomycin, teicoplanin, erythromycin, clindamycin, trimethoprim, fusidic acid and rifampicin. The patient was successfully treated with a combination of rifampicin and cotrimoxazole twice daily for 10 days. Molecular characterization revealed that IDH70 was positive for genes encoding Panton-Valentine leucocidin. IDH70 also carried the SCCmec V genetic element, belonged to coagulase type XIIIa, spa type t903, and was assigned to clonal complex 1153 and sequence type ST1153 (ST1153-V-t903). The report highlights the increasing burden of CA-MRSA in the community and the risk of its acquisition from bites of companion animals.

8.
J Am Podiatr Med Assoc ; 105(2): 185-8, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25815660

RESUMEN

Ciprofloxacin and other fluoroquinolones are commonly used broad-spectrum antimicrobial agents for treating bacterial infections. This class of antibiotic drugs has uncommon adverse effects that include tendonitis, tendon ruptures, and other tendon abnormalities. We describe a patient with spontaneous bilateral complete Achilles tendon rupture after ciprofloxacin treatment. Surgical repair was performed successfully, and the patient completed physical rehabilitation without incident. Care should be exercised when selecting pharmaceutical agents to maintain a positive benefit-to-risk balance.


Asunto(s)
Tendón Calcáneo/lesiones , Ciprofloxacina/uso terapéutico , Traumatismos de los Tendones/tratamiento farmacológico , Tendón Calcáneo/diagnóstico por imagen , Anciano de 80 o más Años , Inhibidores del Citocromo P-450 CYP1A2/uso terapéutico , Humanos , Imagen por Resonancia Magnética , Masculino , Quinolonas , Rotura , Traumatismos de los Tendones/diagnóstico por imagen
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