Novel Wearable Radio-Frequency Antennas Based on Woven Conductive Fabrics

In this study, a new practical method for fast fabrication of low-cost wearable antennas is introduced. The antennas are directly cut from woven conductive fabrics, while their terminals are connected to microchips by using a repair glue. Following simple trials to demonstrate the fabrication procedure, high-performance radio-frequency antennas that are suitable for the proposed method are designed in a simulation environment based on the multilevel fast multipole algorithm and genetic algorithms. Simulations and measurements on fabricated samples demonstrate very good agreement, showing the feasibility of low-cost, lightweight, flexible, and wearable antennas to be fabricated via the proposed approach

Comparison Of The Therapeutic Effects Of Tri-Iodothyronine And Methylprednisolone During Early Sepsis In Laboratory Animals

Background: Despite major advances, the treatment of sepsis is still a challenging problem for surgeons. This study was aimed to compare the therapeutic effects of methylprednisolone and tri-iodothyronine replacement therapy during an early sepsis. Material and methods: Forty male Wistar albino rats weighing 300-340g were divided into the Control, CLP, CLP/MP, CLP/T3 and CLP/MP/T3 groups. The Control group underwent a sham operation. Only cecal ligation and puncture was performed in the CLP group. The CLP/MP groups received an intramuscular injection of (MP) methylprednisolone (30 mg/kg) at one and half hour before CLP. The CLP/T3 group was given an intraperitoneal (IP) injection of tyroid hormone (T3) 0.4 mu g/100 g immediately after CLP. The CLP/MP/T3 group was given IM injection of MP 30 mg/kg before CLP and IP injection of T3 0.4 mu g/100 g after CLP. Hemavet changes, blood cultures, peritoneal bacteria content, hormonal alterations and histopathologic changes of intestinal, lung and liver tissue were used to asses the possible therapeutic effects of MP and T3 during early sepsis. Results: A septic insult resulted in significant alterations on hemavet values, free T3, free T4 and cortisol levels, peritoneal bacteria content and intestinal lung and liver tissue samples of the CLP group. Hemavet changes and peritoneal inflammation findings were significantly limited in the CLP/T3 and CLP/MP/T3 groups. Histopathologic changes had no significant difference between the groups during an early sepsis. Conclusion: Compared to the MP replacement therapy, therapeutic effects of T3 replacement therapy have been found significantly more promising (Tab. 1, Fig. 10, Ref. 49). Full Text in PDF www.elis.sk.Wo

Ethyl Pyruvate Protects Colonic Anastomosis From Ischemia-Reperfusion Injury

Ethyl pyruvate is a simple derivative in Ca+2- and K+-containing balanced salt solution of pyruvate to avoid the problems associated with the instability of pyruvate in solution. It has been shown to ameliorate the effects of ischemia-reperfusion (I/R)injury in many organs. It has also been shown that I/R injury delays the healing of colonic anastomosis. In this study, the effect of ethyl pyruvate on the healing of colon anastomosis and anastomotic strength after I/R injury was investigated. Anastomosis of the colon was performed in 32 adult male Wistar albino rats divided into 4 groups of 8 individuals: (1) sham-operated control group (group 1); (2) 30 minutes of intestinal I/R by superior mesenteric artery occlusion (group 2); (3) I/R+ ethyl pyruvate (group 3), ethyl pyruvate was administered as a 50-mg/kg/d single dose; and (4) I/R+ ethyl pyruvate (group 4), ethyl pyruvate administration was repeatedly (every 6 hours) at the same dose (50 mg/kg). On the fifth postoperative day, animals were killed. Perianastomotic tissue hydroxyproline contents and anastomotic bursting pressures were measured in all groups. When the anastomotic bursting pressures and tissue hydroxyproline contents were compared, it was found that they were decreased in group a when compared with groups 1,3, and 4 (P .05). Ethyl pyruvate significantly prevents the delaying effect of I/R injury on anastomotic strength and healing independent from doses of administration

Asymptomatic oral carriage of Candida species in HIV-infected patients in the highly active antiretroviral therapy era Carreadores assintomáticos de espécies de Candida na mucosa bucal de pacientes infectados pelo HIV na era da terapia antiretroviral

Oropharyngeal candidiasis is the most common opportunistic fungal infection in individuals infected with human immunodeficiency virus. CD4+ lymphocytes count and the quantification of viral RNA in blood plasma have been found to be the main markers of HIV disease progression. The present study was conducted to evaluate Candida sp. diversity in the oral cavity of HIV-infected patients and to determine whether there was association of CD4+ cell count and viral load with asymptomatic oral Candida carriage. Out of 99 HIV-positive patients studied, 62 (62.6%) had positive culture for Candida (oral carriage) and 37 patients (37.4%) had Candida negative culture (no oral carriage). The etiologic agents most common were C. albicans and C. tropicalis. The range of CD4+ was 6-2305 cells/mm³ in colonized patients and 3-839 cells/mm³ for non-colonized patients, while the viral load was 60-90016 copies/mL for colonized patients and 75-110488 copies/mL for non colonized patients. The viral load was undetectable in 15 colonized patients and in 12 non colonized patients. Our results showed that there was no significant difference of the variables CD4+ cell count and viral load between oral candida carriage and no oral candida carriage patients.<br>Candidíase de orofaringe é a infecção fúngica oportunística mais comum em indivíduos infectados com o vírus da imunodeficiência humana. Contagem de linfócitos CD4+ e quantificação de RNA viral no plasma sanguíneo são os principais marcadores da progressão da doença pelo HIV. O presente estudo foi conduzido para avaliar a diversidade de espécies de Candida presentes na cavidade bucal de pacientes infectados pelo HIV e para determinar se havia associação de contagem de células CD4+ e de carga viral com carreadores assintomáticos de Candida, na mucosa bucal. Dos 99 pacientes HIV positivo estudados, 62 (62,6%) apresentaram cultura positiva para Candida sp. sendo denominados carreadores de Candida e os 37 pacientes (37,4%) que não possuíam leveduras do gênero Candida na mucosa bucal foram denominados não carreadores. Os agentes etiológicos mais comuns foram C. albicans e C. tropicalis. A variação de CD4+ foi de 6-2305 cels/mm³ em pacientes colonizados e de 3-839 cels/mm³ para pacientes não colonizados, enquanto a carga viral variou de 60-90016 cópias/mL para pacientes colonizados e de 75-110488 cópias/mL para não colonizados. Não foi possível a detecção de carga viral em 15 pacientes colonizados e em 12 não colonizados, porque o limite mínimo de detecção era de 50 cópias/mL. Nossos resultados mostraram que não houve diferença significante na contagem de células CD4+ e de carga viral entre os pacientes carreadores e não carreadores de Candida na mucosa bucal de pacientes com AIDS