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F Guillé

Publications and source records attributed to F Guillé.

At least 19 recordsLinked to original sources
PubMed2000

Value of immunohistochemical Ki-67 and p53 determinations as predictive factors of outcome in renal cell carcinoma.

OBJECTIVES: Nuclear grade and tumor stage are important prognostic factors in renal cell carcinoma, but tumors of similar stage and grade can exhibit a wide variation in biologic behavior and clinical outcome. In this retrospective study, we evaluated the immunologic markers, Ki-67 (MIB1) and p53, in 73 cases of conventional (clear cell) renal cell carcinoma and compared these markers with the accepted prognostic features of grade, stage, and tumor size in predicting outcome. METHODS: Specimens of 73 renal cell carcinomas of different nuclear grade (20 Furhman I/II, 32 Fuhrman III, and 21 Fuhrman IV) and different stage (10 pT1, 23 pT2, 36 pT3, and 4 pT4) were immunostained with monoclonal antibodies against Ki-67 and p53. RESULTS: Univariate statistical analysis showed that tumor size (P <0. 001), nuclear grade (P <0.01), tumor stage (P <0.01), Ki-67 index (P <0.001), and p53 immunostaining (P <0.03) correlated significantly with a poor prognosis. A Ki-67 index of 20% was a powerful predictor of survival in all patients (P <0.00001), with strong predictive values. On multivariate analysis, the Ki-67 index and metastases were significant independent prognostic factors (P <0.02 and <0.01, respectively). CONCLUSIONS: Ki-67 immunostaining appeared to be an additional prognostic indicator of biologic aggressiveness in renal cell carcinoma. Immunohistochemical assessment of tumor antigens could be used to identify patients at high risk of tumor progression in addition to conventional prognostic factors.

Adult↗
PubMed2000

Artificial sphincter insertion after radiotherapy: is it worthwhile?

OBJECTIVE: To determine the influence of radiotherapy on the outcome of artificial urinary sphincter implantation. PATIENTS AND METHODS: A series of 72 men who had an artificial urinary sphincter inserted were reviewed retrospectively, analysing in detail the information from 15 patients with a past history of pelvic radiotherapy. RESULTS: In those who had undergone radiotherapy, the complication rate was higher, both for re-operation (eight of 15) and infection (three); 11 of the 15 patients were continent after surgery, compared with 51 (89%) of the 57 in the unirradiated group. CONCLUSIONS: An artificial sphincter can be inserted after pelvic radiotherapy reasonably successfully, but at the cost of a high complication and re-operation rate. Patients with a previous history of radiotherapy should be informed of the higher risk of surgical revision associated with insertion of the prosthesis.

Adult↗
PubMed2000

[Unusual variety of bladder urothelial carcinoma: "nest type" microlobular carcinoma: report of an anatomoclinical case and review of the literature].

We report a case of nested cell carcinoma, an uncommon transitional tumor. These tumors are composed of regular cuboidal transitional cells forming small nests with minimal cytologic atypia. Despite the benign course, this tumor resembling proliferation of Brunn's nests or inverted papilloma, must be considered as an aggressive transitional tumor. Thus, morphologic criteria are needed to make the diagnosis. Because of its aggressive behaviour, the surgical therapy depends on the tumor's infiltration.

Aged↗
PubMed2000

Interleukin-2 expanded lymphocytes from lymph node and tumor biopsies of human renal cell carcinoma, breast and ovarian cancer.

Adoptive immunotherapy with immune effector cells has proved to be potent for treatment of tumors, however neither the attendant criteria for potential clinical efficacy of the injected cells, nor the method to prepare these cells are presently well established. Our procedure of collecting lymphocytes from biological samples, was based on the use of low IL-2 concentrations (90 to 150 IU/ml) and on the stringent separation of lymphocytes from tumor cells at the very early stages of their outgrowth in culture. When lymphocytes were derived from tumor biopsies (TIL), we observed differences depending on the histological type of tumor. In renal cell carcinoma, natural killer cells were expanded in 4/11 biopsies contrary to what was observed in breast cancer (92 +/- 5% of T lymphocytes from 9 biopsies). The outgrowth of lymphocytes from breast tumors was slower and lower than from renal carcinomas. The autologous tumor cell line was more difficult to obtain from breast carcinoma (23%) than from renal cell carcinoma (61%) biopsies. For ovarian cancer, short-term culture of tumor cells could be obtained for half of the tumor-invaded biological samples. Eight of the 23 tumor-derived cultures contained more than 40% CD8 T. TIL were consistently cytolytic each time they could be evaluated. For ascitic and pleural fluids, data were of similar range. In ascitic-derived cultures, tumor cells and antigen-presenting cells are present and can be supposed to rechallenge T cells with tumor antigens. Lymphocytes derived from lymph nodes could be expanded to a larger number than TIL. However, only 1/18 of these cultures contained more than 40% CD8 T. The presence of few tumor cells in this culture was in favor of significant specific and non-specific cytotoxicity in RCC lymph node cultures and higher percentages of CD8 T in breast cancer lymph nodes. Correlations could not be established between CD8 T percentages and specific in vitro cytotoxicity in our polyclonal populations. Our conclusion is that phenotypic and functional quality of lymphocytes is of interest when the T cells are derived 1) from tumors (RCC, breast or ovarian cancer) and isolated very early to avoid inhibitor factors secreted from tumor cells or 2) from lymph nodes and ascitic and pleural fluids when very few tumor cells are co-cultivated with lymphocytes at initial steps of culture. Final expansion to a number of lymphocytes suitable for therapy (> 109) could be attained in a second step of the procedure by the use of 1,000 IU/ml IL-2 each time it was assayed with 50.106 lymphocytes. In view of these data it appears that phenotypic and functional changes occur during culture depending on the presence of a particular ratio of tumor antigens. This could be artificially reproduced.

Biopsy↗
PubMed1999

[Bologna procedure in stress urinary incontinence with stage III cystocele (with or without vaginal hysterectomy)].

OBJECTIVES: The vaginal approach constitutes a solution for all types of urinary stress incontinence (USI). The type of surgery depends on the position of the bladder neck and urethra, the quality of the sphincter and the severity of genital prolapse. The objective of this study was to evaluate the efficacy of the Bologna procedure in the treatment of urinary stress incontinence (USI) with stage III cystocele. MATERIAL AND METHODS: This procedure can repair genital prolapse and USI via a 2 cm suprapubic incision, with vaginal hysterectomy, and intraoperative cystoscopy. The patient is placed in the lithotomy position and a Crossen T-shaped vaginal incision is made releasing the anterior wall and allowing the creation of 2 pedicled vaginal flaps posterior to the urethral meatus. The flaps, passed through the suprapubic pelvic fascia, support the bladder neck by means of 2 nonresorbable sutures to the rectus abdominis muscles. Fifty-four patients were treated by the Bologna procedure with or without vaginal hysterectomy from 1990 to 1996 and were reviewed with a mean follow-up of 30 months (16 to 46 months). All women (mean age: 63.4 years) underwent a preoperative clinical examination, renal ultrasound, cystoscopy and urodynamic assessment (37 cases). RESULTS: Twelve patients developed postoperative complications (9 local infections, 3 cases of deep vein thrombosis with one pulmonary embolism). All complications were treated by local drainage and/or removal of the suspension sutures. Continence was excellent in 45 women (83.3%), improved in 4 (7.4%), and unchanged in 5 (9.3%). The anatomical results were excellent with correction of prolapse in 48 patients (89%). Six patients subsequently developed prolapse of the vaginal dome and 5 complained of voiding discomfort. CONCLUSION: USI and genital prolapse must be treated simultaneously. The vaginal approach is minimally invasive and can treat both diseases during the same operation.

Aged↗
PubMed1999

[Microsurgical epididymal sperm aspiration (MESA), testicular biopsy and intracytoplasmic sperm injection (ICSI) in the treatment of male infertility].

OBJECTIVE: To assess if ICSI using epididymal or testicular spermatozoa is effective in the treatment of couples with male factor infertility. MATERIAL AND METHODS: 56 couples suffering from male infertility underwent a total of 88 treatment cycles of ICSI, in combination with microsurgical epididymal sperm aspiration (MESA): 62 cycles, or testicular sperm retrieval: 26 cycles. RESULTS: Overall, fertilization rate was 63% per injected metaphase II oocyte. In MESA group, fertilization rate was 64% compared to 61% embryos in testicular sperm aspiration. The overall pregnancy rate was 26% per started ICSI cycle. Pregnancy rates were also similar in both group: 24% for MESA and 32% for testicular sperm extraction. 9 pregnancy (41%) were obtained using cryopreserved epididymal sperm (6 cases) or testicular sperm (3 cases). CONCLUSION: ICSI combined with epididymal or testicular sperm achieved a high fertilization and pregnancy rate. It constitutes an efficient alternative in the treatment of men suffering of testicular failure or azoospermia not amenable to surgical reconstruction.

Adult↗
PubMed1998

[Outcome of renal function in 114 patients who underwent uninephrectomy for renal cancer].

OBJECTIVE: To evaluate the medium-term and long-term impact of radical nephrectomy on renal function and to identify prognostic factors able to help predict deterioration of renal function in patients treated for renal cancer by radical nephrectomy, with a functionally and morphologically healthy remaining kidney. MATERIAL AND METHODS: Between January 1992 and June 1996, 114 patients (72 males, 42 females) with renal cancer were treated by radical nephrectomy. The contralateral kidney was healthy. The mean age of the patients was 64 years (31-85 years). Pre- and postoperative renal function was assessed by serum creatinine assay, in micromol/l. RESULTS: 105 patients were alive (16 with metastases) and 9 had died. The mean follow-up of the survivors was 19.6 months (3-53 months). A slight elevation of mean serum creatinine was observed in this group after nephrectomy compared to preoperative figures (117.9 micromol/l versus 95.6 micromol/l). 37 patients (35.2%) had a postoperative serum creatinine greater than or equal to 121 micromol/l, most of them were elderly, male (81%) and/or hypertensive (43%) and/or diabetic (11%). 6 (5.7%) of these 37 patients had a serum creatinine greater than or equal to 170 micromol/l and all were hypertensive and/or diabetic. CONCLUSION: This study shows that HT, diabetes, advanced age and male sex constitute risk factors for deterioration of renal function. The indication for conservative surgery for T1 T2 N0 M0 tumours should be discussed in the presence of these factors. In their absence and provided the remaining kidney is healthy, renal function remains relatively stable after radical nephrectomy for cancer.

Adult↗
PubMed1998

[Current state of knowledge concerning the mechanisms of action of BCG].

The better understanding of antitumour immunity has improved our knowledge concerning the mechanisms of action of BCG. There are three phases in the immune response to BCG: first of all, BCG adheres and is then phagocytosed by antigen-presenting cells, but also by urothelial cells. This phase corresponds to the early release of so-called inflammatory cytokines (IL-1, IL-6, IL-8). These cytokines may be responsible for certain adverse effects, but may also participate in the cytotoxic phenomenon. The second phase consists of recognition of bacterial antigens by CD4 lymphocytes, which release mainly IL-2 and IFN-gamma(TH1 response). This cell activation leads to the third phase, which consists of amplification of cytotoxic-populations: CD8, gamma delta lymphocytes, macrophages, NK, LAK, BAK. All these cells also release cytokines which then regulate the response. The identification of these modulations allows rationalization of BCG instillation protocols, but identification of the truly cytotoxic elements would allow the proposal of more effective immunization protocols.

Adjuvants, Immunologic↗
PubMed1998

[Injuries of the renal pedicle: is renal revascularization justified?].

OBJECTIVE: Renal trauma with pedicle lesions may require emergency vascular repair, a surveillance in a surgical unit or immediate or secondary nephrectomy. The objective of this study was to evaluate these various treatment modalities. MATERIAL AND METHODS: 28 patients presenting with renal pedicle trauma, treated in two urological centres between 1985 and 1995 were reviewed. All cases of trauma were investigated by intravenous urography, CT and/or arteriography. 16 patients had associated intra-abdominal lesions. RESULTS: 7 patients underwent vascular repair after a mean interval of 4.8 hours. There were 5 nephrectomies and 2 functional kidneys, including 1 with hypertension. 13 patients underwent first-line nephrectomy: 4 performed as an emergency for haemodynamic instability, and 9 performed as a deferred emergency for silent kidney or secondary haemodynamic disorders. The mean time to diagnosis was 20 hours. No complication was observed in this group. Non-surgical management was decided in 8 patients. The mean time to diagnosis was 7.5 hours. One death was observed in this group, due to associated cerebral lesions. 3 patients subsequently underwent late nephrectomy for severe hypertension and 4 had a persistent silent kidney without sequelae. Overall: 21 nephrectomies, 2 functional kidneys (1 patient was hypertensive), 4 silent kidneys without hypertension and one death were observed. CONCLUSION: In cases of renal pedicle trauma seen after the 4th hour, the severity of ischaemic lesions and renal sequelae and the small number of kidneys saved despite revascularization surgery argue in favour of immediately elective nephrectomy.

Emergencies↗
PubMed1997

[Surgery of infiltrating bladder tumors].

Surgical treatment of transitional bladder tumours is based on liberal resection of the bladder. After cystectomy, reconstitution of the urinary tract is required for urinary excretion and patient comfort. The bladder can be replaced by a segment of intestine detached from the digestive tract. Another mean is urinary diversion at the abdominal wall by a direct or continent fistula. The patient should be seen 6 weeks after surgery to assess the quality of the surgical assemblage, the absence of distension of the upper urinary tract and the degree of patient comfort. Subsequently, the patient should be seen every 6 months. Early treatment of bladder cancer leads to cure at 5 years in 50 to 75% of cases.

Cystectomy↗
PubMed1996

Pretherapeutic erythrocyte polyamine spermine levels discriminate high risk relapsing patients with M1 prostate carcinoma.

BACKGROUND: Androgen deprivation is currently the standard treatment for patients with metastatic prostate carcinoma. Few reliable prognostic markers are able to select, at diagnosis, patients who will respond favorably and durably to hormone ablation. Circulating polyamines, markers of cell proliferation that are elevated in prostate carcinoma, have been evaluated as a prognostic tool. METHODS: Eighty-eight patients with untreated, M1 classified prostate carcinoma who received endocrine therapy between 1988 and 1993 were included in this study. Performance status, hemoglobin, alkaline phosphatases, prostate specific antigen, Gleason tumor grade, extent of disease by bone scan, and circulating erythrocyte spermidine and spermine were correlated with observed progression free and cause-specific survivals. Multiple correspondence analysis and ascending hierarchical classification were performed to determine significant pretreatment prognostic factors. RESULTS: Pretreatment performance status, alkaline phosphatase, hemoglobin, and erythrocyte spermine levels were correlated with progression, with hemoglobin and erythrocyte spermine level being the most significant independent variables (P < 0.00001 and P < 0.0001, respectively). With regard to cause specific survival, only hemoglobin and spermine erythrocyte levels were significant independent variables (P < 0.0001 and P < 0.0005, respectively). Patients with spermine levels of less than 9 nmol/8.10(9) had a statistically better outcome than patients with 9 nmol/8.10(9) or more erythrocytes. Erythrocyte spermine was the best sole determinant of progression. A test combining spermine with performance status or hemoglobin improved each variable's predictive values. CONCLUSIONS: Circulating erythrocyte spermine levels, extracted from a blood sample, can discriminate, at diagnosis, patients with hormone-refractory from those with hormone-responsive metastatic prostate carcinoma.

Aged↗
PubMed1996

In vivo, synergestic inhibition of MAT-LyLu rat prostatic adenocarcinoma growth by polyamine deprivation and low-dose cyclophosphamide.

Polyamine deprivation in vivo produces significant tumor growth inhibition of the hormone-resistant, metastatic Dunning Mat-LyLu murine prostatic carcinoma. In order to produce a cytotoxic effect in addition to the cytostatic effect of polyamine deprivation, various chemotherapy regimens, combined with drug-containing polyamine-deficient chow (DC-PDC), were assessed. Triple chemotherapy combining methotrexate, cyclophosphamide and vindesine; and monochemotherapy with high-dose cyclophosphamide (90 mg. kg-1) and low-dose cyclophosphamide (20 mg.kg-1) were studied alone and in combination with DC-PDC. A variant of DC-PDC excluding the polyamine oxidase inhibitor MDL 72527 was also studied in combination with low-dose cyclophosphamide. The triple-chemotherapy regimen alone or in combination with polyamine deprivation was effective on tumor growth inhibition but was also toxic. High-dose cyclophosphamide alone produced significant tumor growth inhibition and an increase in life span. High-dose cyclophosphamide in combination with DC-PDC was also effective on tumor growth but was also toxic. Low-dose cyclophosphamide alone was moderately effective on tumor growth inhibition with a marginal increase in life span. When combined with polyamine deprivation, results with low-dose cyclophosphamide compared favourably with those of high-dose cyclophosphamide alone and prevented the formation of lung metastases. The polyamine oxidase inhibitor does not appear to be mandatory to achieve this effect if DC-PDC is combined with low-dose cyclophosphamide. Polyamine deprivation appears to be an important tool in anticancer therapy, allowing the use of reduced doses of cytotoxic agents with the same antitumoral efficacy.

Adenocarcinoma↗
PubMed1996

[General practitioners' approach to urination disorders in men over the age of 50. A survey of 250 physicians in Brittany].

A questionnaire was set to 250 general practitioners in the Brittany region, to determine the impact of information campaigns concerning benign prostatic hyperplasia (BPH) and prostatic cancer on their everyday approach to disorders of micturition in men over the age of 50 years. 225 questionnaires were interpretable. 75% of general practitioners systematically investigated the presence of disorders of micturition. In the presence of such symptoms, 76% of general practitioners conducted further investigations to exclude prostatic cancer. 89% of general practitioners performed first-line digital rectal examination, and 34% of them systematically performed this examination once a year. The investigations most frequently performed after digital rectal examination concerned the state of urine (50%) but only 30% of general practitioners used reagent dip-sticks and 43% ordered urine cultures. Other investigations consisted of transrectal ultrasonography (31%) an PSA assay (26%). 3% of PSA assays were ordered before digital rectal examination. Renal and vesical ultrasonography occupied 5th place, although distension of the upper urinary apparatus was a source of concern for 51% of general practitioners. In the presence of symptomatic BPH, general practitioners readily prescribed medical treatment (96%). They assessed the results of this treatment on the course of disorders of micturition (95%), digital rectal examination (91%), and PSA (50%). General practitioners are familiar with disorders of micturition after the age of 50 years. However, 25% of them do not systematically question patients about these symptoms. Digital rectal examination is now performed more frequently, although systematic examination of the prostate is rare (34%). PSA assay is not the doctor's first priority (3rd place in the list of examinations). Two examinations are rarely used and should be developed: reagent dip-sticks (30%) and renal and vesical ultrasonography (5th place). Only 4% of general practitioners did not prescribe any treatment in the case of uncomplicated BPH, which is not in line with current recommendations. There is certainly a need for better information of general practitioners, but this information is only valid when a consensus has been reached among urologists.

Age Factors↗
PubMed1996

[Pelviscopy: a good solution].

With the ongoing evaluation of laparoscopic techniques in urology, the transperitoneal access used initially has been progressively replaced by the much simpler retroperitoneal route. The applicability of these new techniques has now been proven though their application still requires a delicate procedure. A long training period is usually required to be able to perform safe operations of reasonable duration. We present a different technique using a modified vaginal speculum and a laparoscopic optic positioned between the valves of the speculum to give a good visualization and expose the operative field. Several retroperitoneal procedures can be performed with this technique using the video-assisted pelviscope, including nephrectomy, pyeloplasty, lymphadenectomy in the pelvis... This video-assisted surgical technique is an interesting compromise between classical surgery and laparoscopic surgery. It is both simple and safe causing little tissue damage and has the advantage of a short postoperative recovery period.

Endoscopy↗
PubMed1995

[Testicular microlithiasis: ultrasonographic diagnosis and semiologic value].

Testicular microlithiasis corresponds to calcifications in the lumen of seminiferous tubules. This rare condition, primarily diagnosed histologically, is usually discovered on scrotal ultrasonography. The characteristic appearance combines multiple microscopic hyperechoic areas disseminated bilaterally throughout the testicular parenchyma. The coexistence of microlithiasis and testicular neoplasms has been described and raises the problem of the therapeutic approach following incidental discovery on scrotal ultrasonography performed for other reasons. The authors report a case of testicular microlithiasis discovered on ultrasonography performed after testicular trauma.

Adolescent↗
PubMed1995

[The vaginal route in the treatment of stress urinary incontinence].

Female stress incontinence can always be treated by a transvaginal approach. It is often associated with genital prolapse which must be treated at the same time as the incontinence. Patients can be classified into 4 groups according to the position of the bladder neck, the degree of sphincter function and the associated genital prolapse. Operative techniques designed to simultaneously control incontinence and genital prolapse are indicated for each of these groups. Urologists should be just as familiar with the transvaginal treatment of female stress incontinence and disorders of pelvic tone as gynaecologists now are with urodynamics and cystoscopy.

Female↗