Effects of epidural analgesia on the course of labor

OBJECTIVE

The aim of this study was to assess the effects of epidural analgesia on the course of labor.

SUBJECTS AND METHODS

The material for the study was obtained from the analysis of 300 medical records of patients delivering under epidural analgesia in the period 2015-2019. A questionnaire by the authors was used as the research tool. Statistical analysis was performed using Fisher's test, Pearson's Chi-square test of independence, and Cramer's V-test.

RESULTS

The first stage of labor in primiparas usually lasted six to nine hours, and in multiparas under five hours (p = 0.041). The second stage was shorter in multiparas (p < 0.001). Our five-year analysis demonstrated that the second stage of labor was longer from year to year (p = 0.087). The fetal station had an effect on the duration of the first stage of labor (p = 0.057). After administration of epidurals, the majority of the women bore the pain well (p = 0.052).

CONCLUSIONS

Epidural analgesia reduces labor pain, but may also disturb the natural rhythm of labor. This happens even if the moment of application of the analgesia is chosen with the guidance of obstetric indications, and may result in the necessity for surgical intervention.

Male Infertility Coexists with Decreased Sperm Genomic Integrity and Oxidative Stress in Semen Irrespective of Leukocytospermia

Our research was designed to verify the relationship between male infertility, basic semen characteristics (with respect to detailed sperm morphology), sperm DNA fragmentation (SDF), oxidation-reduction potential in semen (ORP), and leukocytospermia. The obtained results showed that infertile groups (with or without leukocytospermia) had significantly lower basic semen characteristics and higher SDF, raw ORP, and static ORP (sORP) than fertile controls. The thresholds of 13% SDF (AUC = 0.733) and 1.40 sORP (AUC = 0.857) were predictive values for discriminating infertile from fertile men. In infertile groups, a higher prevalence and risk for >13% SDF and >1.40 sORP were revealed. Unexpectedly, leukocytospermic subjects had lower sORP, prevalence, and risk for >1.40 sORP than leukocytospermic-negative men. These groups did not differ in SDF and raw ORP. Both SDF and sORP negatively correlated with basic semen parameters but positively correlated with sperm head and midpiece defects. sORP positively correlated with sperm tail defects, immature sperm cells with excess residual cytoplasm, and SDF. In turn, raw ORP negatively correlated with sperm count but positively correlated with SDF and sORP. These findings indicate that (1) there is a relationship between male infertility, SDF, and OS in semen; (2) in infertile men, there is a clinically significant risk of SDF and OS irrespective of leukocytospermia; and (3) the assessment of SDF and oxidative stress should be independent of leukocytospermia.

Evaluation of selected semen parameters and biomarkers of male infertility - preliminary study

Background: Because the etiopathogenesis of male infertility is multifactorial our study was designed to clarify the relationship between standard semen parameters, testicular volume, levels of reproductive hormones and the fragmentation of sperm nuclear DNA (SDF). Methods: Patients (n = 130) were clustered as subjects: 1) with an abnormal volume (utrasonography) of at least one testis (<12 mL) or with a normal volume of testes and 2) with abnormal levels of at least one of the reproductive hormones (FSH, LH, PRL, TSH, total T - electrochemiluminescence method) or with normal hormonal profiles and 3) with high level of SDF (>30%), moderate (>15-30%) or low (≤15%) (sperm chromatin dispersion test). Results: In subjects with a decreased testicular volume and in subjects with abnormal levels of reproductive hormones, decreased basic semen parameters were found. Participants with abnormal testicular volume had a higher percentage of SDF and a higher level of FSH (Mann-Whitney U test). In turn, men with a high level of SDF had lower testicular volume and conventional sperm parameters than men with a low level of SDF (Kruskal-Wallis test). Conclusions: We showed that spermatogenesis disorders coexisted with decreased testicular volume and increased FSH levels. The disorders of spermatogenesis were manifested by reduced basic sperm characteristics and a high level of sperm nuclear DNA damage.

The impact of premenstrual syndrome on women's quality of life - a myth or a fact?

OBJECTIVE

The aim of this study was to assess the quality of life (QoL) of women with premenstrual syndrome (PMS).

PATIENTS AND METHODS

The study involved 231 regularly menstruating women aged 18 years and older. The research was carried out from July 2018 to November 2018 at St. Maksymilian Maria Kolbe Catholic Secondary School in Szczecin, Non-Public Healthcare Center "MEDI-PLUS" in Zwierzyno, and by electronic means. The research instruments used in the study were: the author's questionnaire concerning the severity of individual PMS symptoms (based on the APA criteria for PMDD, included in the Diagnostic and Statistical Manual of Mental Disorders, 4th ed.), and the standardized World Health Organization Quality of Life (WHOQOL-BREF) questionnaire. Statistical analysis was performed using the SPSS 24 statistical package. The Kolmogorov-Smirnov test was used. The level of statistical significance was set as p < 0.05.

RESULTS

The QoL of women with PMS was at a medium level. Emotional symptoms were the most severe ones (p = 0.010). The highest QoL scores were obtained for the social relationship domain (p = 0.002), and the lowest for the mental health domain (p = 0.006).

CONCLUSIONS

PMS involves significant morbidity, and the health burden it causes is still not fully assessed. Young women constitute a group that shows the greatest need for psychological support because they experience the most severe PMS symptoms.

Updating the recommendations of the Working Group for the Preservation of Fertility in Oncological and Hematological Patients and Other Patients Treating Gonadier Therapies "ONCOFERTILITY" (GROF) of the Polish Society of Oncological Gynecology regarding cryopreserves and autologous transplant

Update of the recommendations of the Fertility Preservation Working Group in Oncological, Hematological and Other Patients Treated with Gonadotoxic Therapies "ONCOFERTILITY" (GROF) of the Polish Society of Oncological Gynecology regarding cryopreservation and autologous ovarian tissue transplantation. The Fertility Preservation Working Group in Oncological, Hematological and Other Patients Treated with Gonadotoxic Therapies "ONCOFERTILITY" (GROF) of the Polish Society of Oncological Gynecology has developed current clinical guidelines and recommendations to improve the quality of healthcare provision in the area of reproductive health in patients undergoing therapy that may impair their reproductive potential. The guidelines are based on current scientific evidence available at the time of writing this document. In the absence of scientific evidence on some aspects, a consensus was reached among GROF stakeholders. The purpose of the guidelines is to assist healthcare professionals in making decisions in specific clinical situations regarding the selection of an appropriate and effective diagnostic and therapeutic process. The document provides practical guidelines for the management of cryopreservation and autologous ovarian tissue transplantation.

Can personality traits affect the quality of life of women with the BRCA1/BRCA2 mutations before and after prophylactic adnexectomy?

OBJECTIVE

Ovarian, fallopian tube, and peritoneal carcinomas are the most common hereditary gynecological cancers associated with the BRCA1 and BRCA2 mutations. It is recommended to radicalize management, using RRSO. Personality traits are regarded as significant contributors to human QoL and adaptability to the changed conditions of functioning. The aim of this study was to demonstrate the effect of personality on the QoL of women with the BRCA1 and BRCA2 mutations before and after RRSO.

PATIENTS AND METHODS

The study involved 62 patients with the BRCA1 and BRCA2 mutations referred to hospital for RRSO. The research instruments were the WHQ, NEO-FFI, and self-developed sociodemographic data collection tool.

RESULTS

Highly neurotic patients with the BRCA1 and BRCA2 mutations had lower QoL, especially in the domains of depressed mood, anxiety/fears, and sleep problems. At the same time, higher levels of conscientiousness, openness to experience, extroversion, and agreeableness were associated with better QoL outcomes.

CONCLUSIONS

(1) Personality traits can contribute to the QoL of women with the BRCA1 and BRCA2 mutations before and after RRSO. (2) Identification of personality traits may be an important prognostic factor indicating potential changes in the QoL of patients after RRSO.

Assisted reproductive medicine in Poland, 2013-2016: Polish Society of Reproductive Medicine and Embryology (PTMRiE) and Fertility and Sterility Special Interest Group of the Polish Society of Gynaecologists and Obstetricians (SPiN PTGiP) report

OBJECTIVES

The purpose of this publication is to present data on the results and complications associated with infertility treatment using assisted reproductive technology (ART) and intrauterine insemination (IUI) in Poland between 2013 and 2016.

MATERIAL AND METHODS

The report was prepared by the Polish Society of Reproductive Medicine and Embryology (PTMRiE) and the Fertility and Sterility Special Interest Group of the Polish Society of Gynaecologists and Obstetrics (SPiN PTGiP) as a part of the European IVF Monitoring program (EIM) for the European Society of Human Reproduction and Embryology (ESHRE). Reporting was voluntary and the data was not subject to external control. The report presents the availability and structure of infertility treatment services, the number of procedures, their effectiveness and complications.

RESULTS

Between 2013 and 2016, a total of 106,718 treatment cycles using ART [64,413 classical in vitro fertilization and in vitro fertilization with intracytoplasmic sperm injection (IVF + ICSI), 36,041 frozen embryo replacements (FER)] and 51,405 IUI were recorded. The clinical pregnancy rates per embryo transfer in IVF, ICSI and FER were 38.3%, 38.1% and 32.4%, respectively. The effectiveness of IUI with husband/partner's semen (IUI-H) was 11.1% and with donor semen (IUI-D) 16.7%. Multiple delivery rates were 11.3% and 6.2% in IVF + ICSI and IUI, respectively. The most common complication was the ovarian hyperstimulation syndrome (OHSS) (0.34%).

CONCLUSIONS

PTMRiE and SPiN PTGiP report is the only national study documenting Polish reproductive medicine. The results of infertility treatment effectiveness in Poland are comparable with the European data, complications are less frequent than in other countries. The low percentage of multiple pregnancies, and so perinatal complications, is especially valuable. However, due to the lack of a central database and register, the possibility of external control and monitoring of pregnancies and births is limited. Thus, a fully reliable assessment of the treatment quality in our country is not possible.

Oocyte matched follicular fluid anti-Müllerian hormone is an excellent predictor of live birth after fresh single embryo transfer

STUDY QUESTION

What is the relationship between the anti-Müllerian hormone (AMH), gonadotropin and androgen concentrations within a single follicle and live birth after ICSI and a transfer of an embryo developed from the matched oocyte?

SUMMARY ANSWER

Among the analysed markers on the day of oocyte retrieval, AMH concentration in follicular fluid (FF) is a predictor of live birth after single embryo transfer (SET).

WHAT IS KNOWN ALREADY

High serum concentrations of AMH and low FSH concentrations have been associated with a high chance of pregnancy after ART. Whether there are differences in the hormonal milieu for individual follicles and whether this impacts the laboratory and clinical outcomes for the individual oocyte developing within that follicle are unknown.

STUDY DESIGN, SIZE, DURATION

This prospective cohort study included 322 individual FF samples from 199 infertile women scheduled for ICSI/SET over an 18-month period. Of these women, 76 provided a single FF sample, while 123 women contributed two FF samples taken from two different follicles.

PARTICIPANTS/MATERIALS, SETTING, METHODS

The first follicle aspirated in each ovary on the day of oocyte retrieval had the FF aspirated; the individual cumulus-oocyte complex (COC) was tracked, and the associated FF was stored at -80°C. FF AMH, FSH, LH, testosterone (T) and androstenedione (A2) levels were measured by mass spectrometry (androgens) and immunoassays. The laboratory and clinical outcomes for each individual oocyte were related to their unique follicle hormone concentrations.

MAIN RESULTS AND THE ROLE OF CHANCE

Of the 322 oocytes with paired FF samples, 70 (21.7%) oocytes did not fertilise. From the remaining 252 2PN embryos, 88 (34.9%) were transferred as single embryos on Day 3; of the remaining 164, 78 developed into blastocysts, and 18 single blastocyst transfers were performed. Thus, a total of 106 transferred embryos had matching FF samples. An analysis of these individual FF concentrations revealed that AMH concentrations were higher in follicles in which the oocyte developed into a top quality (TQ) blastocyst (6.33 ± 5.52 ng/ml) and whose transfer led to live birth (7.49 ± 5.03 ng/ml) than those in which there was a failure of fertilisation (3.34 ± 2.21 ng/ml). In contrast, follicular FSH concentrations were the lower for oocytes that resulted in a TQ blastocyst (5.36 ± 2.20 mIU/ml) and live birth (5.60 ± 1.41 mIU/ml) than for oocytes that failed to fertilise (9.06 ± 3.36 mIU/ml). FF AMH was the only studied marker that increased the chance of live birth (odds ratio: 1.93 [95% CI: 1.40-2.67], P < 0.001). The receiver operating characteristic analysis showed that FF AMH levels predicted live birth with a very high sensitivity (91.2%), specificity (91.7%) and an excellent AUC value of 0.954, whereas serum AMH level only had a fair (AUC = 0.711) significance as a predictor for live birth after ICSI/SET. The predictive capabilities of the interfollicular markers were not limited to the TQ embryos or blastocysts; they applied to all SET cycles.

LIMITATIONS, REASONS FOR CAUTION

Whether an altered intrafollicular hormonal environment reflects the developmental capacity of the oocyte or defines cannot be determined from this cross-sectional analysis. Inclusion of 21 subjects with polycystic ovary syndrome (PCOS) may have biased the findings due to a unique intrafollicular milieu associated with PCOS.

WIDER IMPLICATIONS OF THE FINDINGS

Our results suggest that highly competent human oocytes have an FF composition of AMH, FSH, T and A2 that is close to that in a natural cycle. Also, the relationships between intrafollicular AMH, gonadotropin and androgen levels in the same follicle support the hypothesis that FF AMH concentration may reflect granulosa cell proliferation during gonadotropin-stimulated follicle growth. Finally, the serum AMH concentration is markedly lower than the FF AMH concentration, with a moderate correlation between serum and FF AMH, implying ovarian follicle autonomy with regards to its secretory products.

STUDY FUNDING/COMPETING INTEREST(S)

The National Science Centre of Poland supported this work (grant number: N N407 217 040). The authors declare that there is no conflict of interest regarding the publication of this article.

Is copeptin a new potential biomarker of insulin resistance in polycystic ovary syndrome?

O: BJECTIVES: Copeptin has been reported to play an important role in metabolic response in women with PCOS. However, the optimal cut-off value for detecting subjects with insulin resistance (IR) remains undetermined. We investigated whether copeptin can serve as an indicator of IR and tried to determine the optimal cut-off value of plasma copeptin concentration in detecting subjects with PCOS and IR.

MATERIAL AND METHODS

We carried out a case-control study on 158 women with PCOS and HOMA-IR < 2.5, 96 women with PCOS with HOMA-IR ≥ 2.5, and 70 healthy volunteers. Plasma copeptin, as well as hormonal, biochemical, metabolic, and IR parameters, were measured. To investigate whether copeptin allows IR to be predicted in PCOS, we used logistic regression models and ROC curve analysis.

RESULTS

Median plasma copeptin concentration was the highest in the women with PCOS and HOMA-IR ≥ 2.5. Logistic regression analysis revealed that copeptin was the strongest predictor of HOMA ≥ 2.5 (OR: 53.34 CI 7.94-358.23, p < 0.01). Analysis of ROC curves indicated that the cut-off value above 4 pmol/L of plasma copeptin concentration had high (99%) specificity but very low (21%) sensitivity in diagnosing of IR (AUC 0.607 (95% CI 0.53-0.68.

CONCLUSIONS

Our findings suggest that copeptin is associated with IR in PCOS patients, but due to low sensitivity should not be considered as a marker of IR.

The impact of sedentary work on sperm nuclear DNA integrity

INTRODUCTION

Contemporary professional jobs that often enforce a sedentary lifestyle and are frequently associated with testicular overheat, deserve special attention with respect to male fertility potential. Interestingly, the harmful effect of testicular heat stress on sperm characteristics including nuclear DNA integrity was well characterized; however, the influence of sedentary work on sperm chromatin has not yet been documented. Therefore, our research was designed to examine the potential effects of sedentary work not only on conventional semen features but also on sperm nuclear DNA status.

MATERIALS AND METHODS

The study was carried out on ejaculated sperm cells obtained from men who spent ≥ 50% of their time at work (≥ 17.5 h per week) in a sedentary position (n = 152) and from men who spent < 50% of their time at work in a sedentary position (n = 102). Standard semen characteristics were assessed according to the WHO 2010 recommendations, while sperm nuclear DNA fragmentation (SDF) was evaluated using the Halosperm test.

RESULTS

There were no significant differences in the standard semen parameters between the study groups. The groups differed only in SDF parameter. The men who spent at least 50% of their work time in a sedentary position had a higher proportion of SDF than the men who spent < 50% of their time at work in a sedentary position (median value 21.00% vs. 16.50%, respectively). The incidence of low SDF levels (related to 0-15% sperm cells with abnormal DNA dispersion) was significantly lower (27.63% vs. 45.10%), the percentage of men with high SDF levels (related to > 30%) was significantly higher (30.92% vs. 16.67%) in group of men who spent at least 50% of their work time in a sedentary positon. Furthermore, these men were more than twice as likely to have not a low SDF level (OR: 0.4648) and had more than twice the risk of having a high SDF level (OR: 2.2381) than the men in less sedentary occupations.

CONCLUSIONS

Despite lack of association between sedentary work and conventional semen characteristics our study revealed detrimental effect of seated work on sperm nuclear DNA integrity. A sedentary job doubled the risk of high levels of sperm DNA damage. The pathomechanism could be related to testicular heat stress resulting in sperm chromatin remodelling failure during spermiogenesis. Therefore, it seems reasonable to simultaneously carry out routine seminological analyses and tests assessing sperm chromatin status while diagnosing male infertility.

The effect of human sperm chromatin maturity on ICSI outcomes

Because sperm chromatin may play a key role in reproductive success, we verify the associations between sperm chromatin abnormalities, embryo development and the ability to achieve pregnancy. The evaluation of sperm chromatin maturity using aniline blue (AB), chromomycin A3 (CMA3) and toluidine blue (TB) staining were carried out in group of males from infertile couples that underwent ICSI. Low levels of sperm chromatin abnormalities (< 16%) were found in most subjects (> 50%). A higher percentage of TB-positive sperm cells were discovered in the men from couples who achieved ≤ 50% fertilized oocytes compared to men who achieved > 50%. No significant differences were discovered by the applied tests between the men from couples who achieved ≤ 50% and those who achieved > 50% high-quality embryos on the 3rd or 5th day after fertilization, nor between the men from couples who achieved pregnancy and those who failed. The sperm chromatin maturity did not correlate with the ICSI results. However, the ROC analysis revealed a significant predictive value of TB-positive spermatozoa only for fertilization. Therefore, the TB assay can be considered as a useful test for the prediction of fertilization. Our findings suggest that the level of sperm chromatin abnormalities of the examined men was not clinically significant. No found associations between sperm chromatin maturity and embryo development and the ability to achieve pregnancy. We could not exclude the effects of the repairing processes in the fertilized oocyte. The use of complementary tests that verify the status of the sperm chromatin seems justified.

MMP2, MMP9 and TIMP2 polymorphisms affect sperm parameters but not fertility in Polish males

Proper function of the blood-testis barrier is pivotal to spermatogenesis. Synchronised action of matrix metalloproteinases (MMP) and their inhibitors (TIMP) is mandatory to maintain dynamic balance of the barrier. Therefore, the association of functional genetic variants of MMP-2, MMP-9 and TIMP-2 and male infertility was studied. A total of 416 infertile males and 421 healthy subjects were genotyped for 7 SNPs within MMP2, MMP9 and TIMP2 genes, along with the assessment of semen parameters (concentration, motility and morphology of spermatozoa). No association was observed between the studied genotypes and male infertility. However, higher sperm concentration was associated with TIMP2 rs8080623 C and rs2277698 T variants among infertile men, and with MMP9 rs17576 A minor allele in controls (p < .05). TIMP2 rs9900972 T and rs2277698 T allele were associated with higher percentage of morphologically normal spermatozoa among controls. MMP2 rs2285053 TT homozygous infertile patients presented higher percentage of spermatozoa displaying nonprogressive motility. Haplotype analysis revealed strong linkage disequilibrium between the studied loci (5 of 8 possible TIMP2 haplotypes, and 3 of 4 possible MMP2 and MMP9 were found). None of the haplotypes showed association with infertility. This study results suggest an association between MMP9 and TIMP2 SNPs with sperm parameters, but not infertility.

Association study of folate-related enzymes (MTHFR, MTR, MTRR) genetic variants with non-obstructive male infertility in a Polish population

Spermatogenesis is a process where an important contribution of genes involved in folate-mediated one-carbon metabolism is observed. The aim of the present study was to investigate the association between male infertility and the MTHFR (677C > T; 1298A > C), MTR (2756A > G) and MTRR (66A > G) polymorphisms in a Polish population. No significant differences in genotype or allele frequencies were detected between the groups of 284 infertile men and of 352 fertile controls. These results demonstrate that common polymorphisms in folate pathway genes are not major risk factors for non-obstructive male infertility in the Polish population.

Evidence for clinical safety, efficacy, and parent and physician perceptions of levocetirizine for the treatment of children with allergic disease

Allergic rhinitis (AR) and chronic idiopathic urticaria (CIU) are highly burdensome diseases, which are increasing in prevalence, especially in the paediatric population. Despite the availability of a large number of medications for treatment of AR and CIU, their use in children has primarily been based on data obtained from a limited number of clinical trials in children and/or testing in adults. The H(1)-antihistamines have traditionally been used as first-line treatment for the relief of both AR and CIU symptoms in children. The first-generation H(1)-antihistamines are associated with marked adverse effects such as sedation, sleepiness/drowsiness as well as difficulties in learning and cognitive processing; thus, they are recommended for limited or discontinued use in children with AR or CIU. In contrast, second-generation H(1)-antihistamines are more adapted for the use in children with AR and CIU due to better safety profiles. However, only a limited number of trials with these agents have been conducted and generally, data from well-designed trials in children are lacking. Levocetirizine is one of the most extensively investigated H(1)-antihistamines for its pharmacologic properties, safety, efficacy as well as overall global satisfaction in children aged 2-12 years. Levocetirizine is the only H(1)-antihistamine launched in the 21st century shown to lack clinically relevant adverse effects on physical and psychomotor development or routine laboratory tests over a long-term period of 18 months in 1- to 3-year-old children predisposed to development of allergic disease. Available data suggest that levocetirizine is a suitable treatment option for AR and CIU in children aged 6 months to 12 years.

Patterns of infertility in Poland - multicenter study

OBJECTIVE

Infertility seems to be a great worldwide problem. Many publications present the epidemiology of infertility, but the percentage distribution of factors responsible for infertility varies significantly. The objective was to define infertility profiles in Poland assessed according to the information provided by 4 large infertility centers: Bialystok, Poznan, Szczecin and Warsaw.

MATERIAL AND METHODS

Multicenter study was performed. Couples with primary infertility, attending one of the four centers in Poland, were asked to fulfill a questionnaire. Overall 1517 questionaires were analysed: Bialystok - 468, Poznan - 325, Szczecin - 341, Warsaw - 383. Only semen analyses fulfilling WHO Manual 1999 criteria were used in the study and were afterwards compared with 2010 WHO standards.

RESULTS

Results from 4 Polish centers showed that the average age of infertile women was 31.41 years and of infertile men 33.2 years. The mean duration of infertility equaled 3.31 years. Among 1517 surveyed women, no pathological findings concerning reproductive abilities were observed in 1088 cases (71.72%). In the remaining patients the following were diagnosed: uterine factor in 26 (6.02%) women, ovulation disorders in 134 (31.33%), including 70 (16.27%) of PCOS patients, tubal factor in 165 (38.55%) and endometriosis in 145 (33.73%). The average of 18.9% of couples had a mixed cause of infertility, while idiopathic factor was assigned to 15.99%. In the study male factor accounted for 55.73% of cases. Change of reference values for semen analysis implemented in 2010 caused an increase in the number of normal results and asthenozoospermia.

CONCLUSIONS

According to the data provided by Polish infertility centers the rate of male factor as a reason of infertility has reached 55.73%. However, the implementation of new reference values for semen analysis in 2010 led to the decrease in male factor frequency and the increase in the rate of idiophatic infertility. Anovulatory cycles and endometriosis are the main reasons affecting the female reproductive potential.

Expression of transient receptor potential vanilloid channels TRPV5 and TRPV6 in retinal pigment epithelium

PURPOSE

Hydration and ionic composition of the subretinal space (SRS) is modulated by the retinal pigment epithelium (RPE). In particular calcium concentration (Ca(2+)) in the SRS varies with light exposure, and although this change is regulated by RPE transport activity, the specific transport proteins involved have yet to be defined. Two members of the transient receptor potential vanilloid family, TRPV5 and TRPV6, are calcium selective ion channels and are known to be expressed in calcium-transporting epithelial tissues. The present work characterizes of TRPV5 and TRPV6 in RPE.

METHODS

Reverse transcriptase PCR was used to examine the presence of TRPV5 and TRPV6 mRNA in cultured human RPE. Protein expression was assessed by western blotting using TRPV5- and TRPV6-specific antibodies. Immunocytochemistry was employed to examine subcellular localization of TRPV5 and TRPV6 in frozen, formaldehyde-fixed sections of native RPE-choroid tissue and in cultured human RPE monolayers. Finally, TRPV5/TRPV6 activity was assessed in cultured RPE, using Ca(2+) indicator dyes to follow [Ca(2+)](i) as a function of changes in [Ca(2+)](o) with and without addition of the TRPV5/TRPV6 inhibitor ruthenium red.

RESULTS

Direct sequencing of PCR DNAs documented the presence of TRPV5 and TRPV6 transcripts in human RPE. Immunocytochemistry showed that TRPV5 and TRPV6 are expressed in native RPE-choroid tissue with strong immunoreactivity for both channels on the apical as well as the basal plasma membranes. Immunostaining for both channels was also positive in monolayers of cultured RPE cells. In cultured cells subcellular localization was variable with immunoreactivity present in the cytoplasmic domain as well as on the plasma membrane. Plasma membrane staining was increased with phagocytosis. The reported molecular weight of the core protein for both TRPV5 and TRPV6 is about 75 kDa, with the expected size of the glycosylated proteins in the range of 85-100 kDa. Western blot analysis of TRPV6 in RPE detected a distinct band at approximately 85 kDa, with another strong band at approximately 60 kDa. A similar pattern was seen for TRPV5, with strong bands at 82 kDa and 71 kDa. In live-cell imaging experiments, [Ca(2+)](i) was lower in the presence of the TRPV5/TRPV6 inhibitor ruthenium red.

CONCLUSIONS

RPE expresses the epithelial calcium channels TRPV5 and TRPV6, the most calcium-selective channels of the TRP superfamily. Present findings suggest that these channels could function in RPE to mediate calcium influx from SRS and thus regulate changes in SRS calcium composition that accompany light/dark transitions.

HLA-G polymorphism and in vitro fertilization failure in a Polish population

To investigate whether human leukocyte antigen-G (HLA-G) gene polymorphism is associated with in vitro fertilization (IVF) failure, we sequenced exons 2-4 of the HLA-G gene in 50 couples with three or more IVFs (including 10 couples with five or more IVFs) and 58 control fertile couples from a Polish population. Of the 10 different HLA-G alleles identified in our study subjects, neither allele was found to be associated with IVF. We also genotyped 50 couples with IVF and 71 control couples for the -725C>G variant in the promoter region and the 14 bp insertion or deletion polymorphism in the 3' untranslated region of the HLA-G gene. The frequency of -725GG or GC genotype in women with IVF and in control fertile women was similar [26% vs 25.3%; odds ratio (OR) = 1.0; P = 1.0]. The 14 bp ins/ins or ins/del genotype was more common in women with IVF than in control women (76.9% vs 59.1%; OR 2.4; P = 0.03), but the difference was not significant after Bonferroni correction for multiple comparisons. The frequency of the ins/ins or ins/del genotype was particularly high (90%) in women who experienced five or more IVFs (OR = 6.2; P = 0.08), but again, the excess was not statistically significant, possibly because of small sample sizes. These results are in line with functional studies that show lower levels of HLA-G mRNA and protein related to the HLA-G allele including the 14 bp sequence and suggest that the insertion allele may be associated with an increased risk of IVF.

Protective potential of SCF for mice preimplantation embryos cultured in vitro in suboptimal conditions

PURPOSE

To examine the effect of stem cell factor (SCF) to embryos exposed to detrimental factors.

METHODS

Mice embryos cultured in control medium or Exp.1. with FasL or FasL+SCF Exp.2. with hydrogen peroxide (HP) or HP+SCF; Exp.3. frozen-thawed and cultured with or without SCF. Immunohistochemistry for Fas and c-kit receptors was performed in blastocysts. Blastocyst rates, total numbers of blastocyst cells (TB) and inner cell mass cell counts (ICM) were determined.

RESULTS

Immunohistochemical studies revealed expression of both Fas and c-kit in blastocyst cells. Exp.1. Significantly more blastocysts were found in control when compared to FasL group and to FasL+SCF group. TB and ICM counts in control and FasL+SCF group were significantly higher comparing to FasL group. Exp.2. We found significant differences between three groups in all three evaluated parameters. The highest blastocyst rates, TB and ICM counts were found in control, lower in HP+SCF group and the worst in HP group. Exp.3. No significant differences in TB and ICM counts were found. More embryos formed blastocyst in control than in two cryopreserved groups. Blastocyst rates did not differ between two cryopreserved groups.

CONCLUSION

SCF may improve culture of embryos exposed to unfavorable milieu.

Biotechnological and clinical outcome of in vitro fertilization in non-obese patients with polycystic ovarian syndrome

INTRODUCTION

Polycystic ovarian syndrome (PCOS) is a hormonal and metabolic disorder which poses problems with controlled ovarian stimulation (COH). It has been also postulated that PCOS patients have oocytes and embryos with poorer quality which affects IVF results.

AIM

To verify IVF outcome in non-obese patients with PCOS.

MATERIALS AND METHODS

IVF results of 71 non-obese PCOS patients with 243 non-obese non-POCS patients, regardless of stimulation protocol, from years 2004-2006 were compared.

RESULTS

Biotechnological results of PCOS patients in opposition to non-PCOS patients were respectively as follows: higher average number (10.19 vs. 7.61; p=0.001) and percentage (82.34% vs. 76.25%; p=0.025) of retrieved mature M2 oocytes; similar (77.01% vs. 76.75%; p=0.835) fertilization rate with higher average number of embryos (7.633 vs. 5.650 p=0.003); higher average number (4.830 vs. 3.304; p=0.001) and percentage (65.66% vs. 60.57%; p=0.006) of embryos with optimal Z1 and Z2 pronuclei pattern according to Scott; higher average number of class Aembryos (3.57 vs. 2.34; p=0.001). Similar number of embryos were transferred in both groups (2.408 vs. 2.485, p=0.552). Clinical results in PCOS and non-PCOS patients were as follows: similar stimulation duration (10.53 days vs. 10.31 days; p=0.639) with significant less gonadotropin total usage (1866.54 IU vs. 2276.18 IU; p=0.001). Also clinical pregnancy per transfer (57.75% vs. 41.98%; p=0.021) and delivery per transfer (45.07% vs. 32.51%; p=0.066) were more often in PCOS patients with comparable miscarriages (12,68% vs. 6,58%; p=0.131) and ectopic pregnancy (0.00% vs. 2.06%; p=0.591) rates, respectively.

CONCLUSION

PCOS in non-obese patients is linked with good biotechnological and clinical IVF outcome.

Relation between anatomical courses of the intramural portions of the uterine tubes and pelvic endometriosis

OBJECTIVE

Endometriosis may originate from implants of endometrium due to retrograde flow of menstrual blood. The flow may be stimulated by anatomical anomalies of uterine tubes or uterus. The aim of the study was to find links between anatomical courses of the intramural portions of the uterine tubes and endometriosis.

DESIGN

Retrospective comparative study.

SETTING

Academic hospital.

PATIENT(S)

Women (n = 227) operated on because of various gynecological indications.

INTERVENTION(S)

Total or subtotal abdominal hysterectomies.

MAIN OUTCOME MEASURE(S)

Pathological reports correlated with courses of the intramural parts of uterine tubes. To evaluate the intramural courses of uterine tubes, specimens were injected with barium sulfate and x-rayed.

RESULT(S)

The intramural portions were categorized into three patterns: straight, curved, or tortuous. Logistic regression identified the course of the intramural portion of the uterine tubes and the parity to be associated with endometriosis. Endometriosis was more frequent in women with straight courses and was infrequent in women with tortuous ones.

CONCLUSION(S)

We suggest that a tortuous course of the intramural portion of the uterine tubes constitutes a normal anatomical finding. It controls the retrograde flow of blood during menstruation and limits the possibility of developing endometriosis. Straight or curved intramural portions represent an anatomical abnormality that may predispose women to endometriosis.

Diagnostic evaluation of oxidoreductive capability of sperm mitochondria

In the present paper, morphological and functional features of human sperm midpiece, contributing to the assessment of sperm fertility potential, have been described. The NADH-dependent NBT screening assay was used to identify and visualise: 1/ morphological defects of sperm midpiece, 2/ immature sperm forms with extensive cytoplasmic retention, reflecting developmental failure in spermatogenic remodelling process, 3/ cytoplasmic sperm conglomerates, related to apoptotic bodies and 4/ sperm NADH-dependent oxidoreductase system at the mitochondrial level, related to the reaction intensity. The used assay is an adequate marker of sperm mitochondrial activity and sperm maturity. It can also help discover sperm defects that result in asthenozoospermia and can be used as an additional indicator in the evaluation of the sperm midpiece, as well as in routine morphological examination of spermatozoa, having a considerable predictive value for in vivo and in vitro fertilization.

Evaluation of mouse preimplantation embryos cultured in media enriched with insulin-like growth factors I and II, epidermal growth factor and tumor necrosis factor alpha

Culture of preimplantation embryos is complex and requires strictly defined culture media to sustain their viability and quality. In the current study, an effort was made to evaluate comprehensively the quality of mice embryos, grown in media enriched with IGF I, IGF II, EGF and TNFalpha. For that purpose, critically chosen and thoroughly described, complex morphological methods based on contrast-phase, fluorescent and confocal microscopy were used. The study evaluated blastulation and hatching rates, total blastocyst cells, inner cell mass cell numbers (differential staining) as well as identified embryo cells with positive reactions for necrosis or apoptosis (TUNEL). The critical evaluation of the effects of the studied cytokines allowed for simultaneous, meticulous assessment of the applied study methods. Significantly more blastocysts were found in culture media enriched with IGF-I, IGF II and EGF. Significantly more hatched blastocysts were found in media with IGF-I and IGF II. Additionally, IGF I and II increased inner cell mass and total blastocyst cell numbers. Very few cells with necrosis and apoptosis were found in the culture media enriched with IGF I, IGF II and EGF. TNFalpha produced negative effects. The observed effects were dose-dependent.

Confocal microscopy: principles and applications to the field of reproductive biology

Confocal microscopy allows analysis of fluorescent labeled thick specimens without physical sectioning. Optical sections are generated by eliminating out-of-focus fluorescence and displayed as digitalized images. It allows 3-dimensional reconstruction (XYZ) and time-analysis (XYT), thus providing unique chance to link morphology with cell function. Since images are obtained by scanning, excess illumination of the specimen and quick decrease of the fluorescent signal are avoided. Resolution obtained with a Laser Scanning Confocal Microscopy (LSCM) is theoretically better than that of a conventional microscope. The preparation of the specimen may be based on standard techniques, such as immunocytochemistry applied to fixed cells, or on staining of living cells, following the use of different fluorescent probes at the same time (colocalization). In our laboratory, we use the LSCM system Fluoview version 2.1 (Olympus) to study reproductive biology of animals and humans. We work on stainings of oocytes and blastocysts (mouse, bovine, human), and human ovarian tissues. We study mitochondrial distribution, cortical granule migration, calcium oscillations and spindle quality to link culture conditions and oocyte quality. Staining of F-actin is used to check transzonal projections (in zona pellucida) or to detect abnormalities following experimental treatment. Blastocyst quality is analyzed in sequential optical sections for microfilament organization and counting of total cell number (staining with phalloidin (actin) and picogreen (DNA). Trophectoderm and inner cell mass distribution (differential staining), apoptotic cells (TUNEL method) and viable cells (live/dead test) are also evaluated. Confocal imaging can be helpful for rapid determination of follicle density (staining with AM Calcein) and follicle morphology (picogreen) in ovarian cortical biopsies. The current review describes the principles of confocal microscopy and illustrates its applications to the field of reproductive biology by a large collection of pictures.

Diurnal variations of respiratory system resistance and compliance derived from input impedance in asthmatic children

The forced oscillation technique is more and more often used in the evaluation of the results of bronchomotor tests and in assessing respiratory mechanics in children. There is little information available concerning diurnal variability of indices of respiratory mechanics derived from input impedance (Z(rsin)). In 29 asthmatic children, aged 8-13 years we have studied diurnal changes of respiratory system resistance (R(rs)) and compliance (C(rs)) by measuring input impedance with the head generator every hour from 08:00 to 21:00 h. Diurnal coefficient of variation for zero frequency resistance (R(0)), mean resistance in the range 4-32 Hz (R(avg)) and C(rs) were 10.6+/-4.9, 11.2+/-4.5 and 8.9+/-3.3%, respectively. Significant circadian rhythm on R(0) was detected in 11 children, on R(avg) in nine children and on C(rs) in seven children. Only three children had all the three rhythms significant. We conclude, that diurnal variability of input impedance derived indices of respiratory mechanics is rather small, and circadian variability is present in about one third of the examined children. Diurnal variations of respiratory mechanics in children with significant circadian rhythm do not exceed 20%.

[Umbilical cord blood cytokines: a new diagnostic parameter? A preliminary report]

The aim of neonatologist is to anticipate clinical status of newborn immediately after delivery. Important are all parameters helpful in determining perinatal outcome. Particular attention is paid to proinflammatory cytokines: IL-1 alpha, IL-1 beta, IL-6, IL-8 and TNF alpha. The aim was to verify a relationships between umbilical cord blood cytokines and way of delivery, umbilical factor and clinical status of newborn in perinatal period. Newborns with lower 10 min Apgar score had higher levels of umbilical blood cytokines. Elevated IL-6 and IL-8 levels were found in newborns with subsequently diagnosed bacterial infection. Higher levels of cytokines were found in umbilical blood of newborns who passed meconium into the amniotic sac and who required an incubator. Proinflammatory cytokines, especially IL-6 and IL-8 may indicate the newborn clinical status in perinatal period.

[The effect of umbilical cord blood cytokines on clonogenicity of hemopoietic stem cells isolated from umbilical cord blood]

Human umbilical cord blood contains haematopoietic stem cells, which are a potential source of cells for hematopoietic transplants. Early cord blood hematopoietic cells are influenced by so called proinflammatory cytokines, which are present in cord blood serum. In this study we tried to correlate the concentration of these cytokines with the number, viability and clonogenicity of cord blood mononuclear cells. Accordingly, cord blood samples were harvested by employing an "open" collection method. Subsequently, we measured in those samples the concentration of selected pro inflammatory cytokines (Il-1 alpha, Il-1 beta, Il-6, Il-8 and TNF alpha), number of mononuclear cells and evaluated in vitro clonogenicity of myeloid progenitors (CFU-GM). We found the negative correlation between number of mononuclear cells and concentration of TNF alpha, and between number of detectable CFU-GM and concentration of IL-1 beta. Other cytokines, which were studied in this report did not correlate with evaluated parameters.

[Predictive values of peak expiratory flow measured with mechanical meters for Polish children and adolescents between 7-19 years of age]

The aim of this study was to evaluate the predicted values of pack expiratory flow for the Polish children and youth by means of measures Mini Wright and Personal Best. The accounts were based on a group of 86 boys and 110 girls. It was established that it was necessary to state different predicted values for different measures and that an optimum model of regression for counting of predicted values of PEFR in relation to body height for the Polish children and youth was an exponential model. Model indices for both measures were set up separately for boys and girls.

[Changeability of respiratory tract and skin symptoms in patients with asthma-prurigo syndrome under the influence of emotional and environmental factors]

In a group of 228 patients suffering from asthma-prurigo syndrome the influence of emotional state, permanent residence and season time on dynamic of the clinical symptoms were studied. The evaluation of emotional state in 80 adult patients was carried-out by means of Eysenck Personality Inventory. The emotional state had less negative influence on the exacerbation of the symptoms upon children then in adults (especially on their skin symptoms). It was confirmed that the patients with high level of neurotic symptoms revealed easier the exacerbation of asthma and skin disorders under the influence of emotional stress. The climatic treatment on the sea-side was more efficient for them than any mountain climatic cure, especially in the treatment of airways symptoms. Similarly, the summer season brought the relief of their symptoms from both the respiratory and skin symptoms.

[Some clinical symptoms and allergens on asthma-prurigo syndrome]

The group of 146 patients suffering from asthma-prurigo syndrome (85 adults and 64 children) have been inquired in many various clinical centers. It was established that in 79.6% of the patients the first symptoms of illness appeared already in infancy and only 28.2% of the patients had negative familiar anamnesis on the allergy. In 73.2% of the patients with asthma-prurigo syndrome the symptoms of atopic dermatitis persisted longer than asthma symptoms and in 89.9% of them asthma-prurigo symptoms accompanied other form of allergic diseases. The most important causal allergens provoking asthma-prurigo symptoms were: house dust (in 64.4% of the patients), chocolate (in 42.2%), cat epithelia (in 40.2%) and cow milk proteins (in 29.5% of the patients).

Inducible nitric oxide synthase in the epithelial epididymal cells of the rat

The expression of mRNA for inducible nitric oxide synthase (iNOS) in rat epithelial cells of epididymis was investigated with reverse transcription followed by polymerase chain reaction. Immunocytochemical reaction for iNOS was performed to confirm the enzyme's localization in the epididymal epithelium. Additionally, an indirect spectrophotometric method for nitric oxide (NO) determination was applied for measurement of nitrite production by cultured epididymal epithelial cells. Inducible NOS mRNA was detected in freshly isolated epithelial cells, in cultured cells without stimulation as well as in cultured cells after stimulation by lipopolysaccharide and interferon-gamma. Inducible NOS immunoreactivity was observed in the apical part of epithelial cells of epididymal sections and in the cytoplasm of cells in culture. Release of nitrite was observed in vitro in both the unstimulated and stimulated cells of caput (1.44+/-0.94 v. 4.37+/-2.42 microM) and cauda (0.69+/-1.21 v. 5.21+/-2.76 microM) epididymis (P < 0.001). To the best of our knowledge, this is the first study to demonstrate iNOS in the epididymal epithelial cells of the rat. Nitric oxide released by epididymal epithelial cells may act on cells and tissues located nearby. The results may help explain epididymal function: sperm storage, passage and maturation. Excessive epididymal NO production may also play a role in the inflammatory infertility of the male.

[The role of steroid therapy in treatment of bronchial asthma in children]

Bronchial asthma is a chronic inflammatory disease of respiratory system. Antiinflammatory therapy, especially inhaled steroid is a basic form of pharmacotherapy. Inhaled steroids are used in chronic mild, medium and severe bronchial asthma. Dose of drugs depends on severity of the illness.

[Internal standardization of sperm morphology evaluated according to strict morphological criteria]

OBJECTIVE

To evaluate sperm morphology and find cut-off values for local andrology lab based on morphological strict criteria. To compare the results to WHO guidelines.

MATERIAL AND METHODS

Strict morphological criteria were applied to 300 sperm smears stained according to the Papanicolaou method. Specific sperm defects were described in details. The results were analyzed statistically.

RESULTS

The normal sperm morphology was found in 18.54% of cases, which is less than the cut-off value suggested in the WHO guidelines. The lab cut-off value aimed by the 25th percentile was 8%.

CONCLUSION

Sperm morphology requires broader multi-center standardization to enable compatible exchange of morphological data and find predictive factors of sperm fertilizing potential.

[The analysis of the sperm parameters in view of its concentration and motility in relation to men's age and occupation]

OBJECTIVE

To evaluate chosen sperm parameters (concentration and progressive motility) in relation to men's age and occupation.

MATERIAL AND METHODS

Retrospective study of laboratory records containing semen analysis results (n = 473, 1995-1997) of patients attending local andrology lab. Linear regression analyses was applied to co-related the age of the patients with the sperm concentration and progressive motility. Mean sperm counts and percentage of motile spermatozoa were compared in the general population vs. car drivers and soldiers.

RESULTS

Sperm characteristics were not associated with the age of men. No differences between the general population, drivers and soldiers were found. The values of the mean sperm counts and percentage of motilile spermatozoa were higher than the cut-off values of the WHO.

CONCLUSION

The data show no evidence of deterioration in sperm quality in relation to the age and occupation of patients.

[Clinical efficacy and safety of levocarbastine++ in the therapy in children suffering from seasonal allergic rhinitis and conjunctivitis who are less than 12 year of age]

Levocabastine is an antihistaminic agent for topical application. It is without not advisable general side-effects and since many years is widely used for the treatment of pollinosis in adults and children more than 12 years of age. The group of 32 children aged from 5 to 11 years suffering from seasonal allergic rhinitis and conjunctivitis were treated by means of levocabastine applied topically by 20 days during the period of natural exposition to grass pollen. The clinical efficacy and tolerability including potential side-effects, were evaluated on the basis of clinical-laryngological investigations, visual analogs scales and diary cards filed in by parents of examined children. Levocabastine has been demonstrated to have rapid onset of action in children with SAR and the topical application of the drug does not irritate the mucosa of conjunctivas and nasal cavities.

[Modulation of peritoneal macrophage function: effect of selected drugs on their activity and sperm phagocytosis]

Leukocytes and their products (free oxygen radicals, cytokines, nitrogen intermediates and prostanoids) are considered to be the major etiopathological factors of male and female infertility. Particular attention is paid to macrophages, which play a crucial role in pathogenesis of infertility. They may modulate immunological response which is often directed towards spermatozoa, decreasing their ability to move, and fertilize egg cells. Spermatozoa are often phagocytosed by the macrophages. The immune cells may also damage egg cells and embryos, or even impair implantation. The aim of the work was to verify the influence of potentially immunomodulating drugs: nifedipine, danazol and acetylsalicylic acid on the activity of peritoneal macrophages. Mouse peritoneal macrophages were cultured with the studied drugs and spermatozoa. It was assumed that the production and release of tumor necrosis factor-alpha, nitrates and prostaglandin F2 alpha were indicative of the increased activity of the macrophages. Biochemical studies were correlated with the morphological ones conducted under transmission and scanning electron microscopes. These studies covered the morphology of the cells as well as the sperm phagocytosis by the macrophages. Nifedipine was found to decrease the release of nitrites and TNF alpha by the peritoneal macrophages (Tab. 1, 4, 5). The inhibitory effect was dose and time dependent. Nifedipine caused morphological changes which correlated with the decreased activity of the cells (Fig. 3, 4). The macrophages were round with short protrusions surrounding the spermatozoa. There were numerous endocytic vesicles in the cytoplasm of the macrophages. Danazol did not exert any effect on the activity of the studied peritoneal macrophages (Tab. 2, 4, 5). At higher concentration, a decreased release of nitrites and TNF alpha was noted. This correlated with necrotic changes in the scanning and transmission electron microscopes (Fig. 5, 6). The changes were seen in the studied macrophages and spermatozoa. The sperm phagocytosis was completely abolished. The acetylsalicylic acid had an inhibitory effect on the release of nitrites, PGF2 alpha and TNF alpha (Tab. 3, 4, 5). The effect was dose, and time dependent. It was not noted in the concentration lower than therapeutical. Acetylsalicylic acid did not cause any morphological changes, but the phagocytosis was inhibited (Fig. 7, 8). The experiments were to verify new potential possibilities of infertility treatment, particularly those depending on the malfunction of the immunological system.

[Better control of asthma symptoms with salmeterol]

Patients treated for severe bronchial asthma often suffer from attacks of bronchoconstriction despite appropriate anti-inflammatory treatment. The aim of this study was to find out whether the use of salmeterol (Serevent) in this group of patients might significantly improve the course of asthma. Patients with a stable course of asthma for last 4 weeks prior to the start of study were included. All had been treated with inhaled corticosteroids and some had been on oral corticosteroids as well, but they had also needed either regular treatment with short-acting beta 2-agonists or had taken them "on demand", at least 4 puffs/24 h. One hundred and three patients were included in the study. Their ages ranged from 6 to 60 years (mean, 24 +/- 17.7); the mean duration of asthma was 11.7 +/- 7.7 years and they had been treated with corticosteroids for a mean period of 4.4 +/- 4.8 years. Addition of salmeterol to therapy produced a rapid significant improvement of all parameters investigated, which was gradual and reached its peak at the end of the fourth (last) week of treatment. All the parameters measured, symptom index, PEF and spirometry findings significantly improved in the course of treatment. After discontinuation of treatment, deterioration was observed, although even at two weeks the mean values of the parameters measured were significantly better compared to the pre-treatment findings. The study has demonstrated that a regular treatment with salmeterol in patients with serve bronchial asthma allows very good control of symptoms in most patients while spirometry findings return to normal. The beneficial effect of salmeterol can be observed many days after discontinuation, which might suggest certain anti-inflammatory effects of salmeterol in addition to its bronchorelaxant action.

[The effect of uropolinum on phagocytosis of sperm by cultured peritoneal macrophages in rats]

Peritoneal macrophages and sperm were cultured with and without uropolinum. The macrophages were isolated from female rat peritoneal cavities and sperm from male rat cauda epididymis. Sperm phagocytosis index was estimated in cultures with increasing concentrations of uropolinum. Authors concluded that uropolinum inhibited sperm phagocytosis by peritoneal macrophages. The results were verified by electron microscopic examinations. The latter additionally revealed that uropolinum enhanced an adhesion between the macrophages.

Evidence against differential release of noradrenaline, neuropeptide Y, and dopamine-beta-hydroxylase from adrenergic nerves in the isolated perfused sheep spleen

The subcellular storage and release of noradrenaline (NA), dopamine-beta-hydroxylase (D beta H), and neuropeptide Y (NPY) was studied in the isolated perfused sheep spleen. Subcellular distribution studies showed a bimodal distribution for NA which was well reflected by D beta H and indicated the occurrence of two types of NA storage vesicles. The most dense, presumably large dense-cored vesicles (LDV), contain both membrane-bound and soluble D beta H; the less dense presumably corresponds to small dense-cored vesicles (SDV) and at least does not contain soluble D beta H. The distribution of NPY is extended but shows a peak only at the position of LDV, indicating that LDV contain NPY. Continuous electrical stimulation of the splenic nerve at 2 Hz, 5 Hz, 10 Hz, and 20 Hz or at 20 hz with bursts induced the release of NA, NPY, and D beta H. The ratio among these components was constant. The fractional release of D beta H and NA was comparable at all frequencies used; that of NPY was 10-20 times lower, suggesting the occurrence of a large nonreleasable NPY pool. The present data argue against a high frequency stimulation or intermittent stimulation-induced preferential release of NPY from adrenergic neurons and question the concept of frequency-dependent chemical coding of sympathetic transmission in general. The simplest interpretation of our data is that NA and NPY are released at all frequencies from a single pool. The present finding might signify that only large dense-cored vesicles are involved in the sympathetic stimulation-evoked secretion of catecholamines from adrenergic nerve terminals of the isolated sheep spleen.

Morphology of in vitro sperm phagocytosis by rat peritoneal macrophages under influence of oily contrast medium (Lipiodol)

Morphology of sperm phagocytosing rat peritoneal macrophages (PM) in control and Lipiodol added cultures was evaluated under light as well as scanning electron and transmission electron microscopes. The spermiophagic index (SPI) was assessed to estimate an inhibitory effect of Lipiodol on sperm phagocytosis to be compared with the outcome of morphological studies. Lipiodol inhibits in vitro sperm phagocytosis as indicated by SPI and evaluation under light, scanning electron and transmission electron microscopes. The highest SPI was seen in control cultures (14.44), declined in cultures with 0.25% and 0.5% Lipiodol (3.3 and 3.02 respectively) to reach the lowest value with 1% Lipiodol (1.60). The macrophages in cultures with Lipiodol were covered by a thin layer of oily contrast medium. The layer produced changes in the macrophages' shape and the cytoplasmic surface configuration. Lipiodol hinders both sperm phagocytosis and movement of PM by altering their shape and impairing pseudopodia and protrusions formation. Morphological studies of sperm phagocytosis by PM can help explain therapeutic effects of oily contrast media used in hysterosalpingography. Number of studies have suggested therapeutic effects of hysterosalpingography (HSG). These studies have demonstrated an increase in pregnancy rates after HSG in previously infertile women (Fullenlove, 1969; Palmer, 1960). Pregnancies were even more numerous after applying oil, than water based contrast media (DeCharney et al., 1980; Schwabe, 1983). Sawatari et al., 1993 have lately shown, that Lipiodol significantly increases pregnancy rates in animals. Hypothesis has been put forward as to the possibility of modulating activity of these agents exerted upon the peritoneal and oviductal macrophages (Boyer et al., 1986; Schwabe et al., 1983).(ABSTRACT TRUNCATED AT 250 WORDS)

[Comparative results of skin tests and the analysis of specific antibodies by the RAST method in children up to 3 years of age with obstructive bronchitis]

In 55 children (age range 4-34 months) with obstructive bronchitis skin prick tests and determination of specific antibody levels to common allergens (IgE class-RAST) were carried out. In 51.9% (D. pteronyssimus) and 91.8% (milk) of the subjects the results were comparable. The mean comparable level was 79.2%. The results may imply the role of skin prick tests as first line diagnosis of allergy in youngest children.

[Evaluation of the degree of allergy in children up to 3 years of age with obstructive bronchitis based on the analysis of specific IGE antibodies by the RAST method]

In 53 children with obstructive bronchitis, levels of specific antibodies of IgE class directed against common allergens were calculated using the RAST-IgE method. On all 17 allergens were tested. In 20 cases (37.7%) reagins to selected allergens could not be demonstrated. In 33 children (62.3%) IgE antibodies were found, in 25 of which to more than two allergens. Most often antibodies to D. pteronyssimus and grass pollens were found. Only in 4 children (7.5%) antibodies to alimentary allergens could be demonstrated. The authors have stressed the possible role of allergization in development of pulmonological disorders.