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PubMed2005

Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target.

Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. The asymmetry depends on the azimuthal angles of both the pion (phi) and the target spin axis (phi(S)) about the virtual-photon direction and relative to the lepton scattering plane. The extracted Fourier component sin((phi+phi(S))(pi)(UT) is a signal of the previously unmeasured quark transversity distribution, in conjunction with the Collins fragmentation function, also unknown. The component sin((phi-phi(S)(pi)(UT) arises from a correlation between the transverse polarization of the target nucleon and the intrinsic transverse momentum of quarks, as represented by the previously unmeasured Sivers distribution function. Evidence for both signals is observed, but the Sivers asymmetry may be affected by exclusive vector meson production.

Journal Article↗

PubMed1996

Haemopoietic growth factors, the cell cycle of acute myeloblastic leukaemia progenitors and sensitivity to cytosine arabinoside.

We describe an 'in vitro' model which permits assessment of acute myeloblastic leukaemia (AML) progenitor cells' response to Ara-C alone and in conjunction with recombinant human (rh) cytokines by evaluating cell cycle characteristics of purified AML blast progenitors and their chemosensitivity in clonogenic culture before and after cytokine priming. Parallel investigation of Ara-C/cytokine treatment on normal CFU-GM progenitors was included as these cells are important for post-therapeutic reconstitution of haemopoiesis. Kinetic and clonogenic findings for AML marrows were extremely variable with G+GM-CSF or IL-3 priming. However, inclusion of rhSCF and resultant synergism with the other cytokines, introduced a pronounced element of consistency in AML results. Normal CFU-GM responded to rhG+GM-CSF or IL-3 with increased kinetic activity and sensitivity to Ara-C. rhSCF synergised strongly with the other factors, causing increased cell cycling and attainment of maximal chemosensitivity 'in vitro'. No correlation was evident between 'in vitro' findings for AML samples, patient FAB types or clinical outcome. This study highlights the fact that both normal and AML cells can be targeted by rh cytokines, particularly when rhSCF is included in priming cocktails.

Antimetabolites, Antineoplastic↗

PubMed2005

Case report: inspiratory muscle training in chronic critically ill patients--a report of two cases.

BACKGROUND AND PURPOSE: Inspiratory muscle weakness and fatigue has been documented following prolonged mechanical ventilation despite successful weaning from mechanical ventilation. This report describes the application of inspiratory muscle training in two patients following successful discharge from an intensive care unit (ICU) after prolonged mechanical ventilation. METHODS: Both patients undertook inspiratory muscle training in conjunction with standard physiotherapy rehabilitation. RESULTS: Improvements in inspiratory muscle strength and endurance, exercise tolerance and functional performance following twice-daily inspiratory muscle training were recorded. In both cases, an improvement in maximal inspiratory pressure (MIP) and maximal tolerated inspiratory load (MIP(load)) was found following training. CONCLUSION: These positive results indicate further research is needed to investigate the effect of inspiratory muscle training on respiratory function, exercise tolerance and functional performance, for the possible inclusion of inspiratory muscle training into the physiotherapy management of patients following prolonged mechanical ventilation.

Activities of Daily Living↗

PubMed1995

High efficiency prokaryotic expression and purification of a portion of the hepatitis C core protein and analysis of the immune response to recombinant protein in BALB/c mice.

Hepatitis C virus (HCV) produces chronic persistent liver infection in 1-2% of the U.S. population and is the leading cause of end stage liver disease in patients presenting for liver transplantation at our center. Efforts to cure persistent HCV infection are frequently unsuccessful, so the development of a HCV vaccine is a high priority. HCV envelope proteins are hypervariable so production of a recombinant surface antigen vaccine such as is available for hepatitis B is not likely to confer widespread, high level protective immunity. As the most highly conserved structural protein in the HCV genome, the core protein is one reasonable target for vaccine production. Presented here are data on the manufacture of recombinant core protein containing partial carboxy terminus deletions in an effort to increase the efficiency of core expression. The maltose binding protein (MBP) and glutathione S-transferase (GST) protein prokaryotic expression systems were used to study two different constructs, expressing the first 140 and 163 amino acids of the core region. Deletion of the 23 amino acids (aa) from aa141-163 led to a marked increase in the efficiency of protein production from < 1 to 3-4 mg/liter for both systems studied. Protein purification was accomplished using affinity chromatography (MBP) or inclusion body isolation (GST) as determined by SDS-PAGE gels and immunotransblot with HCV core protein-specific monoclonal antibody. Finally, the immune response to recombinant protein was assessed in BALB/c mice using a MBP HCV core fusion protein and an ELISA developed using GST HCV core protein as a target. In all mice of this strain, serum anti-HCV core antibody titer increased to 10(-4), two logs above background, following immunization in conjunction with Freund's complete adjuvant. These results represent an encouraging first step toward production of a core protein vaccine. Recombinant core protein is a useful tool to study the immune response to core protein and may be useful to further study the epidemiology and biology of the HCV virus.

3T3 Cells↗

PubMed1995

Inclusion of comorbidity in a staging system for head and neck cancer.

The widespread use of the TNM staging system has helped standardize the classification of cancers. Despite its excellence in describing a tumor's size and extent of anatomic spread, the TNM system does not account for the clinical biology of the cancer. Clinical factors, such as symptom severity, performance status, and comorbidity, which are important for classification, prognostication, and evaluation of treatment effectiveness, remain excluded from this system. In several studies of cancer prognosis, the presence of severe comorbidity was found to dramatically influence survival statistics and the evaluation of treatment effectiveness. A statistical technique known as conjunctive consolidation was used to incorporate comorbidity into the TNM staging system and maintain the four category system. Utilizing this technique, comorbidity was added to the TNM system for laryngeal cancer to create a composite staging system. Quantitative evaluation of the new system showed that the addition of comorbidity provides improved prognostic precision over TNM stage alone.

Adult↗

PubMed1990

A progesterone-modulated, low-molecular-weight protein from the uterus of the sheep is associated with crystalline inclusion bodies in uterine epithelium and embryonic trophectoderm.

A protein of Mr 14,000 (14K protein) has been identified in the medium after culturing sheep conceptuses in vitro. However, it was also a component of uterine flushes of nonpregnant ewes during the luteal phase of the estrous cycle. The 14K protein, which consists of several isoforms, was purified from conceptus culture medium by a simple three-step procedure, involving ammonium sulfate precipitation, high-performance anion-exchange chromatography, and gel filtration on Sephacryl S-200. Western blotting procedures with an anti-14K antiserum showed that endometrium from ovariectomized ewes began to release the 14K protein after 6 to 14 days of progesterone treatment. Immunostaining of tissue from Day 16 pregnant ewes and from ewes treated with progesterone for 14 or 30 days showed the protein to be confined to the surface and upper glandular epithelium of the endometrium and to be absent from the deep glands. It was also present in trophectoderm of Day 16 conceptuses. Immunogold labeling in conjunction with electron microscopy revealed that within trophectoderm the 14K protein was localized to large, membrane-bound rhomboidal or needle-shaped crystal structures, and it seems likely that the protein was accumulated by the conceptus as a result of uptake of uterine histotroph. In the uterine epithelium, immunogold label was again most strongly concentrated over crystal-like structures but was also uniformly present over the cytoplasm and nucleoplasm. It was absent over mitochondria, over lipid droplets, and over non-epithelial types of endometrial cell. Such a cellular distribution for a secretory protein is novel, and it remains unclear whether the protein is synthesized by these cells.

Animals↗

PubMed1993

Affinity purification of a difficult-sequence protein. Implications for the inclusion of capping in synthetic protocols.

A biotinylated derivative of a designed, difficult-sequence protein (the Minibody, Bianchi, E., Tramontano, A., Sollazzo, M. & Pessi, A. (1993) Int. J. Peptide Protein Res. 41, 385-393) which represented only 3.7% of the crude, cleaved material was quantitatively recovered with about 70% purity, in a single step, by affinity chromatography on immobilised avidin. Purification to homogeneity was then easily achieved by preparative HPLC. This highly effective purification scheme must be contrasted with the previously shown multidimensional, low-yield chromatographic protocol. Since no facilitation of the purification had been obtained by capping alone, this result suggests that capping is useful only in conjunction with affinity chromatography.

Amino Acid Sequence↗

PubMed1992

A cytologic, ultrastructural and immunocytochemical comparison of tumor cells and cell cultures originating in invasive bladder carcinoma.

Tumor cells and urine-voided cells from patients with invasive bladder carcinoma as well as from healthy patients were examined cytologically, ultrastructurally and immunocytochemically. The ultrastructure of tumor cells showed an abundant, dilated, rough endoplasmic reticulum in the form of membrane-bound vacuoles full of granular to fibrillar material located perinuclearly and/or paranuclearly. Some cells exhibited enlarged modified lysosomes containing sparce flocculent and particulate precipitate. Papanicolaou staining of these cells showed two basophilic cytoplasmic textures, one green glossy-patchy, perinuclearly and/or paranuclearly, well segregated from the other texture of peripheral hematoxylinophilic foamy cytoplasm, comparable to the cytologic features of cell cultures originating in invasive bladder carcinoma. PAS diastase showed double distribution and texture of the perinuclear glycosaminoglycans, a glossy accumulated mass and large granules. Glycosaminoglycan sacs similar to those of cell cultures were also present in tumor-dispersed cells. There was a nonspecific binding of antisera against lysozyme, human chorionic gonadotropin and alpha 1-trypsin in normal and tumor cells. Tumor cells and tissues were positive for alpha 1-chymotrypsin distributed perinuclearly and in large spheres. Normal cells lacked the above characteristics. The results indicate that it is feasible to use the aforementioned characteristics in conjunction with the existing bladder-cytologic criteria for malignancy as markers in urothelial cancer with regard to prognosis of superficial tumors with high malignant potential.

Carcinoma, Transitional Cell↗

PubMed1999

[Multicenter study on sensitization to Alternaria mold].

The reality emerged of a non-negligible frequency of positive tests to "Alternaria". This was conducted by the inclusion of this mould in the standard allergy assessment, especially if a summer predominance of symptoms was known. A significant difference emerged between seasonal peaks which had to do with mono or polysensitisation. The highest frequency of positives was found near to humid surroundings or woods.

Adolescent↗

PubMed2000

Prospective cohort trial of Euphrasia single-dose eye drops in conjunctivitis.

INTRODUCTION: Eye drops made from Euphrasia rostkoviana Hayne have been used in anthroposophical medicine for more than 70 years for the structuring of the fluid organism in the eye, especially in inflammatory and catarrhal conjunctivitis. The aim of this prospective cohort trial was to describe the efficacy and tolerability of these eye drops in a community-based setting. To evaluate these questions, prospective cohort studies are the best method. This enables the investigator to attain real insights as to which treatment administered related to specific results in a specific group of patients. DESIGN: Prospective, open label, one-armed, multicentered, multinational cohort trial. SETTING: The trial was carried out in the clinics of 12 experienced anthroposophical general practitioners and ophthalmologists in Germany and Switzerland. PATIENTS: Patients with inflammatory or catarrhal conjunctivitis, treated with Euphrasia single-dose eye drops were included in the trial. INTERVENTION: One drop of Euphrasia single-dose eye drops 1-5 times a day was prescribed. The prescription was determined solely by medical therapeutic needs. OUTCOME MEASURES: Efficacy variables were: redness, swelling, secretion, burning of the conjunctiva, and foreign body sensation. Tolerability variables were: conjunctival reddening, burning of the conjunctiva, foreign body sensation, and veiled vision. All symptoms were given for the right or left eye separately, with degree of severity in relation to baseline after approximately 7 days (+/-3 days; first follow-up examination) and after approximately 14 days (+/-3 days; second follow-up examination). If, after the first follow-up, all symptoms had disappeared, no second follow-up was done. RESULTS: Sixty-five (65) patients fulfilled the inclusion criteria for the protocol evaluation. A complete recovery was seen in 53 patients (81.5%) and a clear improvement in 11 patients (17.0%). A slight worsening could only be determined in 1 patient in the second week of treatment (1.5%). No serious adverse events were observed during the entire trial. The efficacy and tolerability were evaluated by the patients and doctors as "good" to "very good" in more than 85%. CONCLUSION: Euphrasia single-dose eye drops can effectively and safely be used for various conjunctival conditions by general practitioners and ophthalmologists. A dosage of one drop three times a day seems to be the general prescribed dosage.

Cohort Studies↗

PubMed2000

Interventions for preventing falls in the elderly.

BACKGROUND: Fractures in the elderly often result from a simple fall. OBJECTIVES: To assess the effects of programmes designed to reduce the incidence of falls in community dwelling, institutionalised, or hospitalised elderly people. SEARCH STRATEGY: We searched MEDLINE, EMBASE, CINAHL, PsycLIT, Social Science Citation Index, Dissertation Abstracts, Index to UK Theses, the Cochrane Register of Controlled Trials, and bibliographies of identified studies. We contacted known workers in the field. Trials were also obtained from the Cochrane Musculoskeletal Injuries Group trials register. Date of the most recent search: May 1997. SELECTION CRITERIA: Randomised trials of interventions designed to minimise the effect of, or prevent exposure to, any putative risk factor for falling in elderly individuals living in the community, in institutional care, or in hospital. The main outcomes of interest were number of fallers or falls, or the number sustaining a fall resulting in injury. Trials that focused on intermediate outcomes such as improved balance or did not report fall outcomes, were excluded. DATA COLLECTION AND ANALYSIS: Two reviewers selected trials for inclusion. For each included trial, quality assessment and data extraction was carried out independently by two reviewers. Results of trials of similar design were pooled. MAIN RESULTS: Eighteen trials and one pre-planned meta-analysis were included. The analysis of four trials which studied the effect of exercise alone did not establish protection against falling (Peto odds ratio 1.05; 95% confidence interval 0.74 to 1.48). Based on one trial, there was no evidence to support exercise in conjunction with health education classes (Peto odds ratio 1.72; 95% confidence interval 0.78 to 3.75), or of health education classes alone (Peto odds ratio 1.25; 95% confidence interval 0.51 to 3.03) for the prevention of falls. However, significant protection against falling was apparent from interventions which targeted multiple, identified, risk factors in individual patients (Peto odds ratio 0.77; 95% confidence interval 0. 64 to 0.91), and from interventions which focused on behavioural interventions targeting environmental hazards plus other risk factors (Peto odds ratio 0.81; 95% confidence interval 0.71 to 0.93). REVIEWER'S CONCLUSIONS: Health care purchasers and providers contemplating fall prevention programmes should consider health screening of at risk elderly people, followed by interventions which are targeted at both intrinsic and environmental risk factors of individual patients. There is inadequate evidence for the effectiveness of single interventions such as exercise alone or health education classes for the prevention of falls.

Accidental Falls↗

PubMedDate not supplied

A sequential histopathologic and immunocytochemical study of chicken anemia virus infection at one day of age.

Detection systems for chicken anemia virus (CAV) antigen in paraffin sections were evaluated. Mouse monoclonal antibodies to CAV used in conjunction with an avidin-biotin-peroxidase-complex detection system gave best results. Immunoreactivity of CAV was markedly affected by fixation. Fixation in neutral buffered formalin for 6 hours gave best results. Use of decalcifying fluid containing formic acid eliminated immunoreactivity of CAV, whereas use of an EDTA solution did not. In a sequential study, CAV antigen and lesions were first detected in bone marrow, thymus, and spleen at days 3-4 postinoculation (PI). Subsequently, antigen and/or cells containing nuclear inclusions were found in many tissues, but usually within lymphoid tissue therein. Thymus, spleen, bone marrow, proventriculus, and ascending duodenum contained most antigen. No antigen was detected after 26 days PI. The results indicated that CAV replicates in thymic lymphoblasts, intra- and extra-sinusoidal hemocytoblasts, and reticular cells, with consequent lymphocytic depletion of the thymic cortex and hypoplasia of the bone marrow, and that CAV antigen is widely distributed in the body.

Anemia↗

PubMed2006

Long-term follow-up of atopic dermatitis: retrospective analysis of related risk factors and association with concomitant allergic diseases.

BACKGROUND: The association of atopic dermatitis (AD) with other allergic diseases has been extensively studied; however, there is a lack of reports focusing on long-term studies of the clinical and allergometric evaluations observed during the course of AD in respect to its evolution and association with allergic responses in affected patients. OBJECTIVE: The aim of this study was to evaluate, with defined criteria of clinical diagnosis, severity assessment, and objective allergometric test at the time of inclusion, the natural course of AD, the factors influencing its healing or persistence, and the appearance of other allergic diseases with particular focus on asthma and the presence of specific immunoglobulin E at first observation. METHODS: This study included only children, aged between 6 and 36 months, whose first clinical examination was made between 1981 and 1989. A total of 252 children satisfied these criteria. A semistructured interview was performed by the physician using a preformed questionnaire, which was completed for 205 children (104 boys and 101 girls). RESULTS: AD had completely disappeared in 124 cases (60.5%). Other allergic manifestations that appeared included asthma in 70 cases (34.1%) and rhinoconjunctivitis (RC) in 118 cases (57.6%). Generally the average age of patients recovering from AD was higher in severe AD (6.0 +/- 3.5 years) than in its moderate or mild forms (5.8 +/- 4.5 and 5.5 +/- 3.9 years, respectively). This phenomenon was particularly evident in children with hen's egg sensitization, who show a longer persistence of the condition (Student t = 2.462 and P < .02). The initial severity score of AD was found to be associated with a high frequency of asthma appearance (Pearson chi2 = 14.225 and P < .001). Hen's egg sensitization was significantly related to the appearance of asthma (Fisher's exact test P < .007) and RC (Fisher's exact test P < .05). A retrospective analysis of related risks factors and their association with concomitant allergic diseases in our case studies shows that the egg sensitization, severity of AD, and onset of RC were positively related to the occurrence of asthma. In addition, our analysis shows that, although the appearance of RC was proportional to the incidence of atopy and asthma, it was inversely related to the persistence of AD (corrected odds ratio confidence intervals <1). LIMITATIONS: The study includes children referred to the hospital. However, it is the practice of local national health pediatricians to send all patients with suspected AD, whatever the severity grade, to hospital specialists to perform allergometric assessment. CONCLUSION: The use of defined criteria of clinical diagnosis for the determination of the condition's severity, along with the performance of objective allergometric tests at the time of inclusion, shows that the course of AD is significantly related to egg sensitivity. In addition, the average healing time is higher in egg-sensitive patients affected by the most severe form of AD than in mild or moderate cases.

Asthma↗

PubMed2000

Magnesium sulfate for treating exacerbations of acute asthma in the emergency department.

BACKGROUND: Treatment of acute asthma is based on rapid reversal of bronchospasm and arresting airway inflammation. There is some evidence that intravenous magnesium can provide additional bronchodilation when given in conjunction with standard bronchodilating agents and corticosteroids. No systematic review of this literature has been completed on this topic. OBJECTIVES: To examine the effect of additional intravenous magnesium sulfate in patients with acute asthma managed in the emergency department. SEARCH STRATEGY: Randomised controlled trials were identified from the Cochrane Airways Review Group register. Bibliographies from included studies, known reviews and texts were searched. Primary authors and content experts were contacted. SELECTION CRITERIA: Randomised controlled trials or quasi-randomised trials were eligible for inclusion. Studies were included if patients presented with acute asthma and were treated with IV magnesium sulfate vs placebo. DATA COLLECTION AND ANALYSIS: Data were extracted and methodological quality was assessed independently by two reviewers. Missing data were obtained from authors. MAIN RESULTS: Seven trials were included (5 adult, 2 pediatric). A total of 665 patients were involved. Patients receiving magnesium sulfate demonstrated non-significant improvements in peak expiratory flow rates when all studies were pooled (weighted mean difference: 29.4 L/min; 95% confidence interval: -3.4 to 62). In studies of people with severe acute asthma, peak expiratory flow rate improved by 52.3 L/min (95% confidence interval: 27 to 77.5). The forced expiratory volume in one second also improved by 9.8 % predicted (95% confidence interval: 3.8 to 15.8). Overall, admission to hospital was not reduced, odds ratio: 0.31 (95% confidence interval: 0.09 to 1.02). In the severe subgroup, admissions were reduced in those receiving magnesium sulfate (odds ratio: 0.10, 95% confidence interval: 0.04 to 0.27). No clinically important changes in vital signs or adverse side effects were reported. REVIEWER'S CONCLUSIONS: Current evidence does not support routine use of intravenous magnesium sulfate in all patients with acute asthma presenting to the emergency department. Magnesium sulfate appears to be safe and beneficial in patients who present with severe acute asthma.

Acute Disease↗

PubMed2000

Clinical failure after percutaneous transluminal angioplasty of the superficial femoral and popliteal arteries.

OBJECTIVE: Anatomic patency after percutaneous transluminal angioplasty (PTA) of the superficial femoral and popliteal arteries does not guarantee clinical success. The aim of this report is to determine the causes of clinical failure after PTA. METHODS: The records of all patients who have undergone PTA of the femoropopliteal arterial segment by our vascular group were retrospectively reviewed. Only patients with complete records and at least one postprocedure clinical and anatomic assessment within the same 30-day time interval were included. Success was defined according to the Society for Vascular Surgery/International Society for Cardiovascular Surgery Ad Hoc Subcommittee on Reporting Standards for Endovascular Procedures. Anatomic cumulative patency and clinical success were calculated according to life table analysis on an intent-to-treat basis. RESULTS: We identified 85 patients who met inclusion criteria. We treated 112 lesions with an average stenosis of 80% +/- 16% and lesion length of 2.3 +/- 1.8 cm. Technical failure occurred in six (5.4%) of 112 lesions. Cumulative clinical success was 69% at 1 year, 54% at 2 years, 49% at 3 years, and 40% at 4 years. Anatomic patency was 74% at 1 year, 62% at 2 years, 57% at 3 years, and 52% at 4 years. There were 45 clinical failures; of these, twenty-seven (60%) occurred in conjunction with anatomic failure. Anatomic failure was due to restenosis in 12 patients (44%), occlusion in eight patients (30%), and restenosis with progression of disease in six patients (22%). Anatomic failure at the time of the procedure occurred in one patient (4%). Clinical failure occurred despite anatomic patency in the remaining 18 patients (40%). Etiology for clinical failure in this latter group included progression of disease within the treated vessel in 12 patients (67%), iliac disease in three patients (17%), tibial disease in two patients (11%), and bypass graft failure in one patient (5%). Fifty percent of all 45 clinical failures were successfully treated with supplemental percutaneous procedures. CONCLUSION: A PTA is an acceptable therapeutic option for the treatment of focal occlusive disease of the femoropopliteal arterial segment. Most clinical failures were due to anatomic failure, but a significant number occurred despite patency at the PTA site. Although primary clinical success rates were inferior to surgical bypass graft, supplemental PTA was possible in 50% of patients. Repeat percutaneous treatment may extend the interval of clinical success and may obviate the need for surgical bypass graft.

Angioplasty, Balloon↗

PubMed2006

Early use of a phosphodiesterase inhibitor after brachytherapy restores and preserves erectile function.

OBJECTIVE: To investigate whether the early use of phosphodiesterase inhibitors (PDEIs) after brachytherapy (BT) is associated with better erectile function, as of men potent before BT 38-70% have erectile dysfunction afterward. PATIENTS AND METHODS: We evaluated a prospectively created database of 2500 patients who had had BT at our institution since 1992. We measured baseline age, cancer stage, Gleason grade, prostate specific antigen (PSA) level at diagnosis, implant type, use of neoadjuvant and adjuvant hormonal suppression therapy, use of external beam radiotherapy in conjunction with interstitial therapy, and follow-up PSA levels. Men were stratified by their use of PDEIs at <1 year (early group) or >1 year after implantation (late group). We excluded all men who did not have baseline Sexual Health Inventory for Men (SHIM) scores and at least one follow-up SHIM score; the latter were obtained at 6-month intervals after BT. Data were analysed using the Mann-Whitney U-test. RESULTS: In all, 210 men met the inclusion criteria; 85 began using PDEIs within a year of BT, and 125 started after a year. The mean time to PDEI use was 191 days in the early and 595 days in the late group. The median age was 62 years in the early and 63 years in the late group (P = 0.02). Baseline Gleason scores did not differ, nor did PSA levels between the groups. Of men in the early group, 48% received neoadjuvant and/or adjuvant hormonal suppression therapy, vs half of men in the late group. Baseline SHIM scores were not significantly different, nor were scores at the first two follow-up assessments, but the scores at 18-36 months after BT were significantly different. CONCLUSION: The early use of PDEIs after BT is associated with a significant improvement in and maintenance of erectile function compared with late use. Men undergoing BT should be encouraged to use PDEIs early after implantation, to preserve erectile function.

Brachytherapy↗

PubMed1996

Pituitary adenylate cyclase activating polypeptide-immunoreactive sensory neurons innervate rat adrenal medulla.

Rat adrenal chromaffin cells were invested by a dense network of nerve fibers immunoreactive to pituitary adenylate cyclase activating polypeptide-38 (PACAP-IR). Immunohistochemical studies demonstrated the presence of PACAP-IR in nodose and dorsal root ganglion cells, but not in neurons of the intermediolateral cell column and other autonomic nuclei of the thoracic and upper lumbar spinal cord. Somata of the T7 to T12 paravertebral ganglia were PACAP-negative. A few lightly labeled neurons were occasionally noted in the dorsal motor nucleus of the vagus. Injection of the retrograde tracer Fluorogold into the left adrenal medulla 3 days prior to sacrifice resulted in the labeling of a population of neurons in the ipsilateral spinal cord intermediolateral cell column (T1 to L1), ipsilateral and contralateral nodose ganglia and ipsilateral dorsal root ganglia from T7 to T10 inclusive. A small number of lightly labeled somata was occasionally noted in the dorsal motor nucleus of the vagus. Combined retrograde tracing and PACAP immunohistochemistry showed that a population of Fluorogold-containing nodose and dorsal root ganglion cells were also PACAP-positive. Pre-treatment of the rats with capsaicin caused a marked reduction of the PACAP-IR in the adrenal gland as well as in the superficial layers of the dorsal horn and caudal spinal trigeminal nucleus. These findings, in conjunction with the apparent absence of PACAP-IR in spinal sympathetic preganglionic neurons, sympathetic postganglionic neurons, and dorsal motor nucleus of the vagus, raise the possibility that PACAP-IR fibers observed in the adrenal medulla are primarily sensory in origin. As a corollary, catecholamine secretion from chromaffin cells may be modulated by the peptidergic sensory afferents in addition to the cholinergic sympathetic preganglionic nerve fibers.

Adrenal Medulla↗

PubMed1988

[Therapeutic results in uterine sarcoma (1955-1985)].

This is a retrospective analysis of prognostic factors and treatment outcomes in 126 uterine sarcoma cases from the period of 1955 to 1985 inclusively. Up to now there lacks unanimity and extensive scientific based therapeutic concept; and treatment results could not be improved despite better operative and radiation therapy possibilities. From the examined charts and materials, the five year survival rate achieved for all stages is 31%. The mean age of the patients is 57.9 years and significant prognostic differences will be appreciated only in relation to the clinical stages at the commencement of therapy and also after local total operative intervention (stages I and II) in conjunction with postoperative radiation therapy. The difference in course in relation to the histologic tumour type can not be statistically verified.

Adult↗