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Biomedical subjects

L Bablok

Publications and source records attributed to L Bablok.

At least 19 recordsLinked to original sources
PubMed2005

Multiple neoplastic lesions of the lower genital tract in a human papilloma virus-infected kidney-pancreas allograft recipient: a case report.

States of immunodeficiency are associated with an increased rate of certain cancers. Immunosuppressed allograft recipients are at high risk of Human Papilloma Virus (HPV)-related de novo malignancies. A female pancreas plus kidney transplant patient developed multiple genital malignancies within 6 years. The genome of human papilloma virus type 16 was detected in malignant lesions obtained from surgical procedures. All detected lesions were removed at an early state of development.

Adolescent↗
PubMed2002

Proteasome localization and ultrastructure of spermatozoa from patients with varicocele--immunoelectron microscopic study.

Localization of proteasomes in spermatozoa from patients with varicocele-associated sterility was studied by means of immunolabeling with the MPC21 monoclonal antibody detecting the C3 subunit of the 20S proteasome. The reaction was visualized for electron microscopy using the secondary Nano-Gold-coupled antibody with Gold-Enhancement in pre-embedding technique. We found that semen samples from varicocele patients contained a large amount of abnormal spermatozoa characterized by the presence of dispersed chromatin and large residual bodies (cytoplasmic droplets) as well as spermatids at various stages of spermiogenesis. In normal spermatozoa, the immunolabeling was found in the acrosome, postacrosomal regions, nuclear vacuoles, in the neck and in the middle-piece as well as in the residual bodies, while chromatin remained unlabeled. In varicocele spermatozoa, the immunolabeling was also associated with chromatin and large residual bodies (cytoplasmic droplets). In contrast to normal, mature spermatozoa, the chromatin of the cells at earlier stages of spermiogenesis was strongly immunolabeled. The association of proteasomes with sperm chromatin and large residual bodies can be the sign of abnormality and disturbances in spermatogenesis associated with varicocele.

Acrosome↗
PubMed2000

[Testicular artery Doppler flow evaluation in men with degenerative changes of seminiferous tubules].

AIM: The aim of this study was to assess the eventual impact of degenerative changes of seminiferous tubules on Doppler flow parameters in testicular vessels. MATERIAL AND METHODS: There were 12 men with degenerative changes of seminiferous tubules (diagnosed by testicular biopsy) in study group and 24 healthy men with normal semen parameters in control group. Patients' age in both groups was respectively 32.22 +/- 5.31 and 29.64 +/- 3.17 (ns). Sonographic biometry of testes volume was performed and the values of qualitative flow indices in terminal section of testicular artery were evaluated. The both groups results were compared with themselves by T-test. Also the values of qualitative flow parameters in testis after biopsy and contralateral one were compared. Additionally the correlation between vascular flow parameters and selected hormone levels (FSH, LH, T, E2 and Prl) was determined. RESULTS: The mean testes volume in the study group was 10.81 +/- 3.77 cm3 and in the control one 14.42 +/- 5.42 cm3 (ns). The values of particular flow indices in both study and control group were respectively: S:D 3.20 +/- 0.95 and 2.92 +/- 0.96 (ns), PI 1.46 +/- 0.46 and 1.23 +/- 0.41 (ns), RI 0.69 +/- 0.09 and 0.66 +/- 0.08 (ns). There were no differences between flow parameters in testis after biopsy and contralateral one. Testosterone was the only hormone correlating with analyzed flow indices (S:D, PI, RI) and the correlation coefficient value was respectively 0.51, 0.49 and 0.52 (p < 0.05). CONCLUSIONS: The significant influence of degenerative changes of seminiferous tubules on vascular flow in testicular artery was not observed. There were no differences between flow parameters in testis after biopsy and contralateral one. The testosterone was the only hormone significantly correlating with analyzed flow indices.

Adult↗
PubMed1998

[The naloxone test in the degenerative changes of seminiferous tubules].

AIM: Are there any changes in hypophyseal and gonadal hormones levels during the naloxone test in the degenerative changes of the seminiferous tubules? MATERIAL AND METHODS: The naloxone test (0.4 mg i.v.) was performed in 13 patients with degenerative changes of the seminiferous tubules. The plasma FSH, LH, prolactin, testosterone and estradiol levels were determined before and 30, 60, 90, 120 minutes after the administration of the drug. RESULTS: In the examined group of patients the plasma FSH, prolactin and estradiol levels were significantly higher, testosterone levels significantly lower and LH levels were in the same range compared with the patients with azoospermia and normal spermatogenesis. The plasma FSH, prolactin and testosterone levels did not change significantly their values during the test. The plasma estradiol levels decreased significantly and plasma LH levels increased significantly during the test. CONCLUSION: Elevated plasma FSH, prolactin and estradiol levels, diminished testosterone levels and the decrease of plasma estradiol levels and the increase plasma LH levels during the naloxone test indicate the degenerative changes of the seminiferous tubules in the cases of azoospermia.

Adult↗
PubMed1998

[The naloxone test in patients with varicocele].

AIM: Is there any influence of naloxone administration on plasma levels of hypophyseal and gonadal hormones in varicocele patients? MATERIAL AND METHODS: The naloxone test (0.4 mg i.v.) was performed in 15 varicocele patients The plasma FSH, LH, prolactin, testosterone and estradiol levels were determined before and 30, 60, 90, 120 minutes after the administration of the drug. RESULTS: The prolactin levels decreased significantly, and FSH, LH, testosterone and estradiol levels did not change their values. The similar results were obtained in patients with azoospermia and normal spermatogenesis. CONCLUSION: The treatment of varicocele patients with anti-opioid drugs is not recommended because the naloxone did not increase LH and testosterone plasma levels.

Adult↗
PubMed1998

[Doppler flowmetry measurements in testicular artery of aging men].

AIM: Testicular artery Doppler flow measurements in aging males were performed for the evaluation of eventual disorders of vascular flow in vessels supplying the testes. MATERIAL AND METHODS: 40 men aged between 51 and 80 years (studied group) and 40 healthy men aged below 40 (control group) were examined. The volume of testes and qualitative flow indices (S: D, PI, RI) in terminal section of testicular artery were measured. The difference between particular values obtained in both groups and the correlation of those parameters with testes volume and patients' age was determined. RESULTS: PI and RI values were significantly higher in studied group when compared to the control one. The correlation coefficient between values of flow indices and testes volume as same as patients' age appeared to be unsignificant in all cases with the only exception in case of S: D and testes volume in studied group. CONCLUSION: The values of qualitative flow indices indicate the increased vascular resistance in testicular artery of aging males.

Aged↗
PubMed1998

[Computer-assisted analysis of cardiotocographic recordings in the course of fetal hemolytic disease].

OBJECTIVES: The aim of this study was to assess the usefulness of computerized cardiotocography in the diagnostics of fetal hemolytic disease. STUDY DESIGN: 50 invasive diagnostic and therapeutic procedures proceeded by computer assisted CTG recording were analysed. The values of particular parameters of CTG were compared with adequate values obtained in uncomplicated pregnancy. The correlation between both cardiotocographic and hematological parameters was estimated. The common relationship between all analyzed features was examined using multidimensional analysis of variancy. RESULTS: The most significant correlation was determined in case of short-term variation and hematocrite of fetal blood. The five-feature algorhythm, containing short- and long-term variation, number of accelerations, fetal movements and gestational age, was established for the prognosing of the most probable level of fetal hematocrite. CONCLUSION: Computerized cardiotocography seems to be the useful diagnostic method which enable to decrease the number of invasive intrauterine procedures in case of fetal hemolytic disease.

Adolescent↗
PubMed1997

[Diagnosis and treatment of vesicouterine fistula occurring after cesarean section].

Eleven cases of vesicouterine fistula were reported. The initial diagnosis was made when urinary incontinence was occurring. The diagnosis was best confirmed by cystoscopy and hysterography, which was positive in 9 cases. The ultrasonographic examinations allow to visualize the fistula in 5 out of 6 cases examined and to establish the diagnosis. If sonographic examination visualizes the fistula, the performing of hysterography is not necessary. The management consists of the cure of the infection of the urogenital tract and abdominal operation based on the excision of the fistula and closing of the bladder and uterus. All operated patients were cured.

Adult↗
PubMed1994

[Congenital malformations of the epididymis and vas deferens as reasons for male infertility].

Between 1966-1991 330 patients where the semen analysis revealed azoospermia and the histopathological examination of biopsy specimen of testis shown retained spermatogenesis and spermiogenesis underwent the surgical intervention. In 80% of cases congenital malformations of epididymis and vas deferens were found. The types of malformations detected during the surgery are discussed.

Adult↗
PubMed1994

[Ultrasonographic investigations in diagnosis of congenital malformations of epididymis in cases of azoospermia].

Between 1984-1991 in 28 patients referred for the surgical treatment for the reason of obstruction of epididymis outlet ducts there was a suspicion of a congenital epididymis malformation put after the physical examination. The ultrasound examination of the scrotum which was performed in all cases revealed the proper view of the epididymis in 5 cases, the proper head of the epididymis with the broad tubules and the lack of the corpus and cauda in 19 cases and in 4 cases the residual head of the epididymis located in region of the upper pole of the testis. Intraoperative findings were consistent with the ultrasound results in 75.0% of cases. The highest consistency between the ultrasonographic and intraoperative findings was found in the cases with the proper view of the head of the epididymis with agenesis of corpus and cauda. In 32.1% of cases malformations of epididymis and vas deferens were associated with the malformations of the urinary tract.

Epididymis↗
PubMed1994

[Fertility disturbances in males working as professional computer operators].

From 2376 patients who were diagnosed as infertile between 1986-1991, 20 professional computer operator males in the age of 26-40 were chosen (0.8%). Their working time was at least 5 hours daily and they have been working for 2-12 years (mean 7.7 +/- 3.3 years). The mean number of spermatozoa in 1 ml of sperm was 45.5 +/- 23.7 X 10(6)/ml, the percentage of properly motile spermatozoa equaled 21.5 +/- 12.2% and the percentage of pathological forms equaled 26.6 +/- 6.1%. The percentage of properly motile spermatozoa was decreased in all patients. There was not significant tendency of decreasing of the number of spermatozoa in 1 ml of sperm and percentage of properly motile spermatozoa dependent on the years of working in front of computer monitors. Whereas percentage of pathological forms increases statistically significantly in dependency of the years of working.

Adult↗
PubMed1990

Male infertility and its treatment: a review of over 4700 patients treated for male related infertility.

Changes in semen parameters are presented for 4708 patients treated for infertility. The largest group comprised patients with oligoasthenozoospermia of various grades (57.7%). Improvement in the seminal state was noted in 70.3%. The percentage of achieved normospermia increased proportionally to the initial semen state. Pregnancy rate also increased proportionally to the initial seminal state. Among the patients' wives 20.4% conceived: 28.2% of these pregnancies had occurred after having achieved normospermia, while in 71.8% the seminal states were still below the accepted normal values.

Humans↗
PubMed1985

Heterotopic adrenal tissue.

In a group of 102 adult patients operated upon for cryptorchism heterotopic adrenal tissue was found in two cases. In one case it was present in the inguinal canal and in another case it was situated at the border between the testicle and rete testis.

Adrenal Cortex↗
PubMed1985

Semen characteristics in pubertal boys. I. Semen quality after first ejaculation.

Semen specimens from 134 pubertal boys were examined, and some 274 assays were made. An analysis of the biological quality of semen in relation to the period of time after first ejaculation brings high values of statistical dependence of the volume of semen, its liquefaction, spermatozoal concentration, percentage of morphologically normal forms of spermatozoa, and normal spermatozoal motility on the period of time after first ejaculation. Normal figures for semen volume, semen liquefaction, spermatozoal concentration, and morphology are observed 12-14 months after first ejaculation. The percentage of normally motile spermatozoa becomes standard 21-23 months after first ejaculation. There were changes in semen characteristics from azoospermia through cryptozoospermia, oligozoospermia, and asthenozoospermia to normospermia. Azoospermia dominates until the fifth month after the first ejaculation, oligozoospermia from the sixth to the eleventh month, asthenozoospermia from the twelfth to the twentieth month, and normospermia from the twenty-first month.

Adolescent↗
PubMed1985

Semen characteristics in pubertal boys. II. Semen quality in relation to bone age.

Semen specimens from 134 pubertal boys were examined and compared to bone age. Normal figures for semen volume, liquefaction, sperm concentration, and morphology were observed between 15 0/12 and 16 0/12 years of bone age. The number of normally motile spermatozoa became standard at 17 0/12 years of bone age. Azoospermia was noted from 13 0/12 to 14 0/12 years of bone age, oligozoospermia from 14 0/12 to 15 0/12, asthenozoospermia from 16 0/12 to 17 0/12, and normospermia from 17 0/12 on.

Adolescent↗
PubMed1985

Semen characteristics in pubertal boys. III. Semen quality and somatosexual development.

The biological quality of semen in 134 pubertal boys was contrasted with somatosexual development. The absence or sparcity of pubic and axillary hair, the absence of facial hair, and infantile-type penile growth are prominent characteristics in azoospermic and cryptozoospermic boys. Sparse or meager pubic hair, absence or sparcity of axillary and facial hair, and puerile penile type are characteristics in oligozoospermia. Female or male pubic hair, meager or normal axillary hair, sparse facial hair, and puerile penile type are characteristic of asthenozoospermia. Female or male pubic hair, meager or normal axillary hair, sparse facial hair, and adult penile type are characteristic in normospermia. Along with the improvement of semen quality the area of the testis expanded and was the largest in normospermia.

Adolescent↗