An electrophoretic characterization of iron-transporting proteins in Mannheimia haemolytica A1.

Iron-regulated outer membrane proteins (IROMPs) in Mannheimia haemolytica A1, which function as a receptor for complexes containing iron ions, are induced by iron deficiency in the growth environment of the bacteria. Densitometric analysis of SDS-PAGE separation showed expression of IROMPs of 71, 77, and 100 kDa in the case of bacteria grown in a medium with 2,2-dipyridyl. The electrophoregrams obtained in 2-DE separations confirmed the presence of protein fractions with these molecular weights and isoelectric points ranging from 5.4 to 6.4. The results of the study also confirmed the ability of M. haemolytica A1 proteins involved in iron uptake to induce a protective immune response. In Western blot with serum from convalescent calves naturally infected with M. haemolytica A1, distinct reactions were obtained for IROMPs of 71, 77, and 100 kDa.

Characterization of outer membrane proteins participating in iron transport in Pasteurella multocida serotype A3.

Iron-regulated outer membrane proteins (IROMPs) of P. multocida serotype A3, which function as receptors for complexes containing iron ions, are induced by iron deficiency in the bacterial growth environment. Analysis of an electrophoresis image of proteins isolated from bacteria grown on medium supplemented with 2,2'-dipyridyl revealed expression of 16 new proteins that were not noted in the case of the bacteria grown in standard conditions, with molecular weights from 30 to 160 kDa. Induction of IROMP expression occurred within 30 minutes after restricted iron conditions were established. In immunoblotting, distinct reactions were noted for proteins of molecular weight ranges of 25-49 kDa, 61-95 kDa, and 108-214 kDa. Proteins of the molecular weight of 68, 75 and 86 kDa were analysed using mass spectrometry and matched with the highest probability to proteins in the NCBI data base. Several dozen different proteins with similar amino acid sequences were matched to each sample.

Use of oromucosally administered interferon-alpha in the prevention and treatment of animal diseases.

Interferon-alpha (IFN-alpha) is well known as a clinically effective antiviral and antineoplastic therapeutic agent. It has also been shown to have immunoregulatory properties. IFN-alpha stimulates a cell-mediated innate immune response and then participates in the transition of the initial host innate response to an effective adaptive immune response. IFN-alpha is produced in small quantities in nasal secretions during viral infections, prompting many authors to suggest that low-dose oromucosal administration of IFN-alpha effectively mimics nature. Moreover, the injectable high-dose interferon therapy currently approved for various human disorders causes numerous side effects. By contrast, oromucosal administration of IFN-alpha is not associated with toxic effects. Another distinct advantage is ease of administration: the IFN can be dissolved in drinking water or administered by nebulization to the oral or nasal cavity. This review describes the current state of knowledge concerning orally administered IFN-alpha, of both human and animal origin, as a prophylactic or therapeutic agent in veterinary medicine. We present the effects of IFN-alpha in such animals as cattle, pigs, horses, cats, dogs and chickens, and attempt to explain its mechanism of action following oromucosal administration. It is hoped that this review of the medical literature on the use of IFN-alpha in animals will give practitioners a better understanding of the challenges and benefits of using this interesting cytokine in clinical practice.

[Bipolar hysteroscopic electrosurgery done with Versapoint system: comparison to operations done with monopolar electrodes, own experience]. / Dwubiegunowa elektrochirurgia histeroskopowa przy zastosowaniu systemu VERSAPOINT--porównanie z zabiegami wykonywanymi elektrodami jednobiegunowymi, doswiadczenia wlasne.

The aim of the paper was to compare properties of mono- and bipolar electrodes in histeroscopic surgery. The bipolar electrodes allow enriching better hemostasis, thanks of the vaporisation effect it takes less time to remove submucosal myomas. Versapoint is an alternative tool for the laser. Use of physiologic saline as the medium for uterine cavity distension is safer for patients during long-lasting histeroscopic operations.

[The influence of cumulative dexamethasone, promethazine and dextran 70 used as protection against intraperitoneal adhesions on selected parameters of humoral immunity in women operated on for infertility]. / Wplyw zapobiegajacego zrostom sródotrzewnowym lacznego podawania deksametazonu, prometazyny i dekstranu 70 na wybrane parametry odpornosci humoralnej u kobiet operowanych z powodu nieplodnosci mechanicznej.

One of the most frequent reasons of the intraperitoneal adhesions formation in young women is pelvic inflammatory disease and surgical operations of pelvic organs. The element of more complex activities against adhesion creation is to limit an inflammatory reaction in the area of operation by intraperitoneal and systemic pharmacotherapy. The system of activities put into practice in the Clinic of Gynaecology includes in the field of pharmacological prophylaxis a systemic and intraperitoneal use of dexamethasone and promethazine before, during and after the operation, in total doses respectively: 250 mg and 300 mg, as well as intraperitoneal dosing of 500 ml of dextran 70, just before closing the peritoneal cavity. Verification of the results of these activities during laparoscopy or laparotomy shows its high effectiveness. For many years we did not observe any complications of any wound healing after the operations. Due to existing reports about possible complications in the postoperation period, which are probably caused by the use of the above-mentioned pharmaceutics, I decided to investigate how dexamethasone, promethazine and dextran 70 influence the selected parameters of humoral resistance in women who were operated on due to mechanical infertility. The investigated group consisted of 30 women, while the control group comprised 10 women who had gynaecological operations of similar extent. The venal blood samples were collected before the operation and on the third, fifth and twenty first day after the operation. The levels of selected acute phase proteins were checked and the character as well as the dynamics of value changes were monitored in both groups. Because of great variability between the proteins the fractions were picked out focusing on the differences in dynamics of metabolism, half-life time and biological functions. Following proteins were investigated: C-reactive protein, alfa1-acid glycoprotein, haptoglobin, alfa1-antitripsin, ceruloplazmin, alpha2-macroglobin, hemopexin, immunoglobulins A, G, M, albumins, transferrin, alpha2-HS-glycoprotein. The analysis of the study results has indicated that the application of dexamethasone, promethazine and dextran 70 only exerts modulating influence on the course of acute phase reaction induced by the operations. In the group having been studied earlier (in 3rd postoperative 24-hours) significant changes were revealed concerning the level of particular proteins in accordance with their physiological character (increase or decrease of level) in the control group such changes appeared later (about 5th 24-hours) and were characterized by markedly smaller amplitude and dynamics (Tab. 1-2, Fig. 1-15). The levels of proteins defined prior to operation were reached faster by patients of the study group (up to 21st 24-hours after operation). It has been disclosed that the use of composed antiadhesion therapy with dexamethasone, promethazine and dextran 70 accelerates, intensifies and simultaneously restricts the duration of transformations defined as acute phase reaction, which result in reducing the number of intraperitoneal adhesions. This therapy does not impair the mechanisms of humoral immunity in patients operated on.

[Evaluating the possibility of performing diagnostic and operative hysteroscopy depending on the type of hysteroscopy and agent used for filling the uterine cavity]. / Ocena mozliwosci wykonania diagnostycznych i operacyjnych hysteroskopii w zaleznosci od typu hysteroskopu i zastosowanego srodka wypelniajacego jame macicy.

The aim of the paper is to present own experiences concerning diagnostic and operative hysteroscopy performed with 4 types of hysteroscopes. Flexible hysteroscope HYP 1T, rigid hysteroscope 5 mm in diameter with single flow, operative hysteroscope 8 mm in diameter with constant flow, hysteroresectoscope 9 mm in diameter with constant flow produced by Olympus; for filling the uterine cavity CO2 0.2% NaCl, 5% glucose, Purisol, Hyskon were implemented. In even case the degree of hardship of the procedure, traumatism for the patient, degree of operated-on patient's safety during the procedure, possibility of applied in the presence of bleeding, price of instrument and agents applied for filling the uterine cavity were estimated. It has been found out that the use of rigid hysteroscope 5 mm in diameter and operative hysteroscope 8 mm in diameter with constant flow and utilization of CO2 as well as Purisol and Hyskon solutions provide possibility of extensive diagnosis and therapy.

[Effect of hydrotubation on the anatomical state of oviducts in women with mechanical infertility]. / Wplyw hydrotubacji na stan anatomiczny jajowodów u kobiet z nieplodnoscia mechaniczna.

The aim of the paper was to evaluate the anatomical state of uterine adnexa in women operated on due to mechanical infertility. Hydrotubation were previously applied in 31 women stemming from various centres in the country, while in 31 such a treatment was not performed at all. The mentioned groups of women were encumbered, to a similar degree, with a risk factor of infertility, except for the duration of sterility, which in those treated by hydrotubation lasted on the average 2 years longer. From 5 to 50 hydrotubations were carried out, most frequently in series of 5 procedures. It was reported by the women that 8 of them after hydrotubation experienced hypogastric pain persisting for some days, and in 6 there was acute adnexitis. Destructive changes in uterine adnexa, being estimated during the reconstructive operation, were decidedly more advanced in women treated by hydrotubation. That was expressed mainly by frequent appearance of lytic adhesions as well as by more advanced fibrosis of oviducts, particularly that of endosalpinx. Unchanged oviducts, after their release from adhesions, also appeared less frequently.