Medical University of Varna

About: Medical University of Varna is a education organization based out in Varna, Varna, Bulgaria. It is known for research contribution in the topics: Population & Medicine. The organization has 1199 authors who have published 1273 publications receiving 32940 citations. The organization is also known as: MU-Varna & Higher Medical Institute of Varna.

High-energy lasers: principles, types, indications in periodontial practices

Abstract: Investigations in the area of laser application in dental practices date back to 1964. Shortly after lasers came to being, they were introduced both in medicine and in dental medicine where they were successfully used for the diagnostics and treatment of a number of diseases. The current literature review presents the nature and properties of lasers and laser beams. Their biological and healing action is discussed. The most common lasers that are employed in dental practices are indicated. The accent is on high-energy lasers used in operative dentistry and periodontology, namely the Ar:Cr:YSGG e Er:YAG lasers, and their emission characteristics. The focus in this literature review is on laser application in periodontal practices. The properties and indications of the most frequently applied lasers are indicated and their advantages are outlined. The latter are due to their specific biological and therapeutic effects both on healthy and on pathologically altered periodontal tissues.The paper also comprises clinical reports by renowned experts in periodontology about laser application in the treatment of different periodontial diseases. Twenty-seven articles are cited.

Feeling the meaning: sobering thoughts at seventy

Abstract: Another title of this Foreword might be "Ju, or the differences between 100 fireflies". Anyhow, the story began "when the night has come" and I sent a message to Professor Hiroshi Yamamoto in Kanazawa asking him to write in Japanese: "Longevity is a good thing". Shortly I received two kanji, cho-ju, calligraphically expressing the meaning of longevity. Adipobiology 2010; 2: 3-4.

Physioterapeutic view on the management of low back pain

Abstract: Back pain is a common problem in the physiotherapy practice. The percentage of the people affected reaches 80%. The medical and social significance of the issue is determined by the fact that these crises are found mainly in the working age patients. The temporary incapacity for work and disability as a result of failed or untimed rehabilitation, cause huge losses to the economy, the healthcare and the social security systems. The choice of an effective approach by any patient with Low back pain (LBP) is a serious challenge in the daily work of the health professionals. The aim of this study is to present the physiotherapeutic look on the management of low back pain. The results of the study show that the treatment through movement is an essential instrument in the plan of the integrated care for patients with low back pain. The plan is provided by a broad multidisciplinary team of specialists - a doctor, an orthopedist, a physiotherapist, a neurosurgeon, a specialist of physical medicine and rehabilitation and others. An individual physioterapeutic schedule is arranged. Training with the right posture, gait and creating useful motor skills in the chronic phase of the disease will lead to a change in the lifestyle, reduction of the relapses and reduction of the disability risk.

Tumor Necrosis Factor - alpha in Clinical Manifestation of Paroxysmal Atrial Fibrillation

Abstract: Въведение: Предсърдното мъждене (ПМ) е най-честата аритмия в клиничната практика. Все повече данни се натрупват за участието на цитокините в патогенезата на аритмията, като обект на изследване до момента са преди персистиращата и перманентната форма на ритъмното нарушение. Цел: Да се потърсят промени в плазмените концентрации на TNF-α, свързани с изявата на пароксизмалното предсърдно мъждене (ППМ). Материал и методи: Плазмените концентрации на TNF-α бяха измерени трикратно при 51 пациенти (26 мъже и 25 жени; средна възраст 59.84±1.60 г) с ППМ, а именно: незабавно след хоспитализацията им (т.е. по време на ритъмното нарушение), 24 часа и 28 дни след възстановяване на синусов ритъм. Показателят беше измерен еднократно при 52 контроли (26 мъже и 26 жени; средна възраст 59.50±1.46 г.) без анамнестични или електрокардиографски данни за ПМ до момента. Плазмените концентрации на TNF-α бяха определени с ELISA кит (Elabscience Biotechnology Co., Ltd, China). Синусов ритъм бе възстановен медикаментозно с propafenone. Резултати: При постъпване на пациентите в отделението концентрациите на TNF-α бяха повишени спрямо тези на контролите (15.06±0.81 vs 8.20±0.29 pg/mL, p<0.001). Двадесет и четири часа след възстановяване на синусов ритъм промените персистираха (13.09±0.70 vs 8.20±0.29 pg/mL, p<0.001). На двадесет и осмия ден липсваше значима разлика (9.21±0.54 vs 8.20±0.29 pg/mL, p=0.10). Заключение: При ППМ се наблюдават динамични промени в плазмените концентрации на TNF-α. Те са значимо повишени по време на клиничната изява на ритъмното нарушение. След възстановяване на синусов ритъм те се нормализират бавно във времето. Специфичният характер на установените отклонения дават сериозно основание да се приеме клиничната им значимост за изявата на заболяването.

Estimation of human health risk from polychlorinated biphenyls through consumption of fish from Black Sea, Bulgaria

Abstract: INTRODUCTION: The present study evaluates the human daily intake of polychlorinated biphenyls (PCBs) through consumption of fish from the Black Sea, Bulgaria. The health risks were assessed using a risk quotient (RQ) of the fish consumption as the ratio of daily fish exposure level in relation to oral reference dose. MATERIALS AND METHODS: PCBs were determined in muscle tissue of four fish species widely consumed by the population of Bulgaria: goby ( Neogobius cephalargoides), sprat ( Sprattus sprattus ), horse mackerel (Trachurus Mediterraneus ponticus) and shad (Alosa pontica pontica) . Samples were collected from Bulgarian Black Sea coast during 2007 - 2011. The Indicator and dioxin-like PCBs were determined by capillary gas chromatography system with mass spectrometry detection. RESULTS: The sum of the six Indicator PCBs ranged from 7.2 to 27.3 ng/g ww (in goby and shad, respectively). The EDI of I-PCBs in fish from Black Sea was calculated between 1.36 and 5.14 ng/kg bw day through consumption of goby and shad, respectively. Dioxin - like PCBs were used in order to estimate the toxicity potential (TEQ) of PCB exposure. WHO-TEQs of the 6 `dioxin-like` PCB congeners were calculated from 0.03 pg TEQ/g ww (goby) to 0.28 pg TEQ/g ww (shad) and did not exceed the limit of 3 pg TEQ/g ww, according to European Commission. CONCLUSION: The estimated intake levels of dioxin-like PCBs in this study were several orders lower than their respective TDI for adults. The dietary intake of polychlorinated biphenyls through marine fish for the Bulgarian consumer does not pose a health risk.