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Summary

Chronic periodontitis is a result of polymicrobial infection and its treatment aims removal of dental calculus and biofi lm from the periodontal pocket. Many hand and power-driven instruments are created for this purpose. In recent years, lasers are widely discussed tools for periodontal therapy. The aim of the present study is to evaluate the early microbiological and clinical effectiveness of the Er:YAG laser in the treatment of chronic periodontitis. 30 patients with moderate chronic periodontitis were enrolled in the study. Using a split-mouth design they were treated either with Er:YAG laser (chisel tip, 100 mJ, 15 Hz, 5-6 water spray)-test group or with Gracey curettes- control group. Probing pocket depth (PPD), gingival recession (GR), clinical attachment level (CAL), bleeding on probing and plaque presence were evaluated at baseline and one month after the therapy. Microbiological samples were taken from the deepest four pockets of each quadrant from 20 randomly selected patients (n = 80). They were evaluated using real time PCR for periodontal pathogens from the red complex (Porphyromonas gingivalis, Treponema denticola and Tannerella forsythia). One month after therapy in the control group PPD decreased from 4.59 mm to 3.36 mm, the CAL gain was 1.09 mm and the reduction of bleeding and plaque - from 87.9% to 33.7% and from 75.9% to 40.9%, respectively. In the test group PPD decreased from 4.58 mm to 3.15 mm, the CAL gain was 1.37mm and the reduction of bleeding and plaque was from 85.6% to 25.9% one month after the treatment. The results were statistically significant in favour of the laser group (p < 0.05). Microbiological analysis revealed that the pathogens from the red complex decreased 3 times in the control and 6 times in the test group. Therefore, the Er:YAG laser demonstrate pronounced early effectiveness in chronic periodontitis treatment and would be appropriate alternative of the conventional periodontal therapy.

Summary

Basal cell carcinoma (BCC) is the most frequent non-melanoma skin cancer. Only 5-15% of BCC cases can be found in patients aged 20-40 years (so-called early onset). The early onset BCC is characterized by active and aggressive tumour growth, clinically presenting in most of the cases as a morpheaform, locally infiltrating or recurrent BCC. Despite the advances in the study of the pathogenesis of this tumour, surgery remains the most used, most effective and most suitable treatment modality. We describe a case of a 39-year-old woman who developed an early onset BCC of the nasolabial fold. After the subsequent surgical excision an excellent cosmetic result was achieved.

Summary

Hepcidin is a 25-aminoacid cysteine-rich iron regulating peptide. Hepcidin quantification in human blood may provide further insights for the pathogenesis of disorders of iron homeostasis and might prove a valuable tool for clinicians for the differential diagnosis of anaemia. This study describes ELISA immunoassay for hepcidin quantification in human serum. We used a sandwich ELISA method from USCN Life Science inc., that consists of ready to use, pre-coated 96-well strip plate with 2 antihepcidin-25 monoclonal antibodies. A recombinant hepcidin in 16 μg/l concentration is used as a standard; it reconstitutes with 1.0 ml standard diluent to prepare a stock solution. We correlated ELISA results of hepcidin-25 measurements in healthy population with hemodialysis patients. The sandwich ELISA was highly specific for hepcidin-25, having a low limit of quantification of 0.020 μg/l. Hepcidin- 25 concentrations were increased in hemodialysis patients (median 33.05 μg/l, range 22.31 -60.98 μg/l, n = 10) compared with healthy individuals (median 12.41 μg/l, range 6.05-18.53 μg/l, n = 40). The use of 2 monoclonal antibodies in a sandwich ELISA format provides a robust, convenient and not very expensive method for measuring concentrations of the active form of hepcidin. It should help to improve our understanding of the role of hepcidin in regulating iron metabolism.

Summary

HPV infection is involved in the etiology of a number of nonmalignant, premalignant and malignant cutaneous lesions. One of them is the so-called giant condyloma of Buschke-Löwenstein type (Buschke-Löwenstein tumor, BLT), which sometimes can imitate clinically other tumors or tumor-like conditions. Clinicians face a particular challenge in cases of BLT where, clinically, the lesions demonstrate a permanent brown hyperpigmentation in parallel with the dermatoscopic lack of the characteristic melanocytic network, globules or regression zones. There are uncommon clinical presentations with solitary, sharply demarcated pigmented lesions. In these cases the histopathological verification of the lesion is obligatory and the most efficient treatment method in the early period of the disease is the complete surgical excision. We report a case of a 74-year-old man who was admitted to the University Hospital “Lozenetz” in connection with profuse variceal bleeding of the esophagus associated with liver cirrhosis of unknown etiology. He underwent a consultative examination at the department of dermatology because of suspected advanced stage melanoma of the prepuce. Computed tomographic analysis indicated diffuse bone metastases located in the small pelvis and femur, as well as metastatic disease in the left inguinal lymph nodes. However, the subsequent histopathologic examination of the lesion, rather than showing melanoma, confirmed the presence of HPV-associated giant condyloma of Buschke and Löwenstein in initial stage, without histopathological evidence for invasive and destructive tumor growth. After his death, the patient’s relatives did not give consent for an autopsy, and therefore the genesis of the metastases, demonstrated by nuclear magnetic resonance imaging (NMR), remained unclear. In some cases, the clinical picture of the malignant and premalignant cutaneous lesions in the genital area could be problematic. The complete surgical excision with a subsequent histopathological verification is the best way to find out the exact diagnosis

Summary

Wound reparative process after surgery, burns, injuries, and inflammatory processes results in a spectrum of scar formation ranging from nearly scarless healing to excessive fibrosis or atrophy. Scarring is considered a major medical problem that leads to aesthetic and functional sequelae. Scar tissue is clinically distinguished from normal skin by an aberrant color, rough surface texture, increased thickness (hypertrophy), occurrence of contraction, and firmness. In the last decade, the concept of wound healing kinetics has been developed to describe the delicate balance of cell activity involved in scar formation and remodeling. Hypertrophic scars and keloids are formed as a result of the process of abnormal wound healing. Despite all that has been written on improving the appearance of these types of scars, there are no definitive management protocols. The aim of the present article is to make a brief review of the basic wound healing, while focusing on medicine’s latest understanding of the development and treatment of keloids and hypertrophic scars.

Summary

The aim of the present study was to evaluate the levels of pro-insulin and pro-insulin/ insulin ratio (PIR) in pregnant with normal glucose tolerance (NGT), pregnant with gestational diabetes mellitus (GDM) and women after delivery with GDM history. Normal pregnancy is characterized by progressive insulin resistance, which is physiologically compensated by an increase in insulin secretion. The higher secretion of the insulin precursor pro-insulin has been associated with β-cell dysfunction. A total of 102 pregnant women between 24-28 gestational weeks (53 GDM pregnant, 49 with NGT) and 22 postpartum with GDM history, as assessed by a 2h oral glucose tolerance test, were included in the study. Fasting plasma insulin and pro-insulin (PI) concentrations at the basal state were measured in all women. The ratio pro-insulin/insulin was calculated. BMI was significantly higher in GDM pregnant compared to NGT weight-matched group (30.56 ± 6.9 vs. 30.56 ± 6.9; p < 0, 011) and compared to the levels after delivery (30.56 ± 6.9vs. 27.9 ± 6, 27; p < 0, 001). Significant differences in the levels of PI between NGT and GDM pregnant (3.94 ± 2.78 vs. 7.59 ± 5.27; p = 0.006), between GDM and postpartum women (7.59 ± 5.27 vs. 4.46 ± 1.14; p = 0.022) were established. No signifi cant difference in the level of PIR between two pregnant groups was observed. Separately NGT and GDM showed signifi cant difference compared to young mothers (0.41 ± 0.14 vs. 0.148 ± 0.031, p < 0.02; 0.46 ± 0.16 vs. 0.148 ± 0.031, p = 0.009). Fasting insulin was statistically higher in GDM pregnant compare to NGT and women after delivery (13.84 ± 8.43 vs. 11.35 ± 7.38, p = 0.02; 13.84 ± 8.43 vs. 10.60 ± 7.53, p < 0.01). The correlation between PIR and BMI in the three groups studied were r = 0.416; r = 0,741; r = 0,556 (with statistical significance p = 0.01 between NGT and GDM pregnancy, p = 0.02 between GDM pregnancy and postpartum, p < 0.0001 between NGT pregnancy and young mother with GDM history). In our study, comparison of PI levels between pregnant with NGT and GDM demonstrated that the OR of developing GDM was 1.194 (95% CI, 1.028-1.329, P = 0.001). Increasing the value of PI with 10 pmol/l increases the risk for development of GDM with 19.4%. According to our results, pregnant with GDM have elevated levels of pro-insulin and PIR which could serve as a markers for this condition. These results support our findings about relationship and influence of BMI on β-cell functions, established in this study with normotolerant, gestational diabetes pregnant and women postpartum with GDM history. These results demonstrate that gestational diabetics have abnormalities in pancreatic beta-cell secretion, which are likely to be important both in the etiology of gestational diabetes and non-insulin dependent diabetes.

Summary

An “in vitro” experimental study has been carried out on 70 extracted teeth. A laser resection of the root apex has been carried out with diode laser beam with a wavelength of - 810 ± 10 nm. Sequentially a radiation with increasing power has been applied, as follows: 1,3 W, 2W, 3W, 4W, 5W, 6W, 7W, in electro surgery mode. Successful resection of the tooth apex has been performed at: 3W; 4W; 5W; 6W and 7W power. It was established that when laser resected the tooth apex carbonizes.

Summary

The aim of the study was to identify the main ergonomic and organizational risks contributing to stress, visual and musculoskeletal disorders in open plan office workers. A total of 73 subjects of mean age 28.3 ±4.7 years were studied. Measurements of salivary cortisol and self-ratings for strain, fatigue, stress symptoms, visual and musculoskeletal complaints were performed. The work places were organized well, but the studied staff reported high work load and time pressure. The data showed higher cortisol levels during the workday under time pressure. High incidence of visual and musculoskeletal complaints mainly in the region of the back and the neck were found, associated with flickering and blinks on the screen monitors and overtime. Optimizing workplace organization could help reduce stress and health complaints of office staff.

Summary

Dirofilariasis is a relatively rare zoonotic disease that affects mainly dogs. The two most common representatives are Dirofilaria immitis and Dirofilaria nochtiella. Studies have documented the spread of the disease across Central and Eastern Europe in recent years due to global changes. In Bulgaria since 2001 there are around 20 cases of dirofilariasis in dogs registered yearly. We report a case of subconjuctival dirofilariasis in a 47-year-old woman living in Southwestern Bulgaria. The infection manifested as a painful, inflamed nodule in the left eye, containing a vital parasite. Morphological analysis aroused suspicion for a filarial worm belonging to the genus Dirofilaria. Subsequent analysis confirmed suspicions and identified the parasite as Dirofilaria repens. After removal, the subconjunctival nodule completely resolved and the patient was successfully cured.

Summary

The present review provides general information about the parasitic infection of toxoplasmosis and describes the ways of its transmission. It outlines the importance of the consequences of toxoplasmosis infection and the methods of its prevention. The review traces the harmful effects of the disease on human and animal organisms, the causes and stages of development of the disease. The review specifically focuses on the ocular manifestations of toxoplasmosis which can cause ocular lesions, inflammation and scarring. Herein are described the ways toxoplasmosis can damage the eyes causing chorioretinitis, nystagmus, microphthalmia, etc. Furthermore, the review addresses the problem of how congenital and acquired toxoplasmosis affects eyes. The ocular symptoms of toxoplasmosis include weakened or blurred vision, eyeballs pain, ocular sensitivity to light, etc. The harmful effects of toxoplasmosis to pregnant women and immunocompromised patients have been delineated. Some of the disease manifestations include jaundice, rash, asphyxia, etc. The review traces the diagnostic work-up and comments on common tests for toxoplasmosis, such as taking of blood serum samples. The review ends with the treatment of the disease and of its ocular manifestations in particular, for example application of intravitreous injection. The prevention of the infection is extremely important for pregnant women, immunocompromised patients and patients with AIDS.