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1.
Disabil Rehabil ; 44(14): 3686-3693, 2022 07.
Article in English | MEDLINE | ID: mdl-33577359

ABSTRACT

BACKGROUND: Rotator cuff related shoulder pain (RCRSP) is a common and disabling shoulder condition and surgical management is becoming more common. The rates and costs of surgical interventions have been on the rise. Understanding decision-making related to surgery and providing adequate information to people with RCRSP may improve patient-centred care and potentially reduce rates of surgery. OBJECTIVES: To explore the decision-making processors of people who have undertaken surgery for RCRSP. DESIGN: An in-depth thematic analysis. METHOD: Interviews were conducted with patients from Melbourne who had had surgical management for RCRSP. Data were analysed using an inductive thematic approach. RESULTS: Fifteen participants were recruited. Six key themes emerged: (1) Needing to get it done: "It was necessary to remedy the dire situation"; (2) Non-surgical treatment experience:" I knew that I'd done all I could"; (3) Mechanical problem:" Physio's not going to repair a torn tendon"; (4) Trust in medical professionals "If they told me that I needed to swallow a thousand spiders, I would have done it."; (5) Varied information sources "Dr Google played a big part in it"; (6) Organisational barriers "It was absolutely useless, my insurance." CONCLUSION: Surgery appears to be commonly precipitated by unremitted severe symptoms and failed non-surgical treatment. While there was strong trust in highly trained surgeons, decision to undergo surgery also drew on questionable pathoanatomical beliefs and instances of inadequate patient information about treatment choices and risks that may be addressed by adopting a more patient-centred care approach.IMPLICATIONS FOR REHABILITATIONUnderstanding decision-making related to surgery and providing adequate information to people with rotator cuff related shoulder pain may improve patient-centred care.Surgery appears to be commonly precipitated by unremitted severe symptoms and failed non-surgical treatment.Decision to undergo surgery sometimes drew on questionable pathoanatomical beliefs.There was strong trust in highly trained surgeons but there were instances of inadequate patient information about treatment choices and risks.


Subject(s)
Rotator Cuff Injuries , Rotator Cuff , Humans , Rotator Cuff/surgery , Rotator Cuff Injuries/surgery , Shoulder , Shoulder Pain/etiology , Shoulder Pain/surgery
2.
Sci Rep ; 11(1): 19805, 2021 10 05.
Article in English | MEDLINE | ID: mdl-34611184

ABSTRACT

Rodent predators are implicated in declines of seabird populations, and removing introduced rats, often, but not always, results in the expected conservation gains. Here we investigated the relationship between small mammal (Norway rat, wood mouse and pygmy shrew) abundance and Manx shearwater breeding success on the island of Rum, Scotland, and tested whether localised rodenticide treatments (to control introduced Norway rats) increased Manx shearwater breeding success. We found that Manx shearwater breeding success was negatively correlated with late summer indices of abundance for rats and mice, but not shrews. On its own, rat activity was a poor predictor of Manx shearwater breeding success. Rat activity increased during the shearwater breeding season in untreated areas but was supressed in areas treated with rodenticides. Levels of mouse (and shrew) activity increased in areas treated with rodenticides (likely in response to lower levels of rat activity) and Manx shearwater breeding success was unchanged in treated areas (p < 0.1). The results suggest that, unexpectedly, negative effects from wood mice can substitute those of Norway rats and that both species contributed to negative impacts on Manx shearwaters. Impacts were intermittent however, and further research is needed to characterise rodent population trends and assess the long-term risks to this seabird colony. The results have implications for conservation practitioners planning rat control programmes on islands where multiple rodent species are present.


Subject(s)
Biodiversity , Ecosystem , Introduced Species , Rodentia , Animals , Behavior, Animal , Breeding , Geography , Population Dynamics , Rats , Rodenticides , Scotland
4.
J Dairy Sci ; 98(10): 7248-63, 2015 Oct.
Article in English | MEDLINE | ID: mdl-26254528

ABSTRACT

Proper performance monitoring of cows on pasture-based diets is crucial to inform nutritional recommendations that minimize undesirable effects of high ruminant CH4 emissions into the environment. The prediction of linkages between rumination patterns, methane emissions, and correlated production traits of cows in a pasture-based automatic milking system was tested. A previous 10-d baseline measurement of rumination activity by acoustic methodology of 156 Holstein-Friesian cows was used for frequency analysis of rumination time and identification of 2 treatment groups (n = 37 cows/group) represented by cows with consistently high (HR; 75th rumination percentile = 617.55 ± 81.37 min/d) or low (LR; 25th rumination percentile = 356.65 ± 72.67 min/d) rumination. The HR and LR cows were paired by nearest parity, days in milk, body weight (BW), and previous 10-d milk production, and within pairs randomly assigned to 1 of 2 experimental groups managed on a voluntary milking system with diets consisting of at least 75% pasture, plus concentrates. Animal traits, including rumination time, mass flux of CH4 (QCH4) and carbon dioxide (QCO2), milk production, and estimated dry matter intake according to individual QCO2 fluxes over a 22-d period were analyzed with repeated measure mixed models for a completely randomized design, structural equation modeling, and nonlinear regression. High rumination and methane was seen in older and heavier cows that had greater estimated dry matter intake and milk production. A consistent difference in rumination time and QCH4 across days was detected between HR and LR, even after adjustment for metabolic BW. Estimated dry matter intake had direct positive effects on rumination and QCH4, but no independent direct effect of rumination on QCH4 was detected. The LR cows produced more QCH4/milk, associated with lower milk, BW, concentrate intake, and greater activity at pasture. A typical dilution of maintenance effect on QCH4/milk was detected as a consequence of increasing milk yield and similar significant reduction of QCO2/milk. The results raise challenging questions regarding the rumination patterning of grazing dairy cows and alternatives to reduce ruminant methane emissions in grazing dairy cows.


Subject(s)
Cattle/physiology , Diet/veterinary , Feeding Behavior , Methane/metabolism , Milk/metabolism , Animals , Automation , Body Weight , Dairying/instrumentation , Dairying/methods , Female , Lactation , Nonlinear Dynamics , Random Allocation
5.
Br J Cancer ; 109(7): 1725-34, 2013 Oct 01.
Article in English | MEDLINE | ID: mdl-24022191

ABSTRACT

BACKGROUND: This phase 1 clinical trial was conducted to determine the safety, maximum-tolerated dose (MTD), and pharmacokinetics of imatinib, bevacizumab, and metronomic cyclophosphamide in patients with advanced colorectal cancer (CRC). METHODS: Patients with refractory stage IV CRC were treated with bevacizumab 5 mg kg(-1) i.v. every 2 weeks (fixed dose) plus oral cyclophosphamide q.d. and imatinib q.d. or b.i.d. in 28-day cycles with 3+3 dose escalation. Response was assessed every two cycles. Pharmacokinetics of imatinib and cyclophosphamide and circulating tumour, endothelial, and immune cell subsets were measured. RESULTS: Thirty-five patients were enrolled. Maximum-tolerated doses were cyclophosphamide 50 mg q.d., imatinib 400 mg q.d., and bevacizumab 5 mg kg(-1) i.v. every 2 weeks. Dose-limiting toxicities (DLTs) included nausea/vomiting, neutropaenia, hyponatraemia, fistula, and haematuria. The DLT window required expansion to 42 days (1.5 cycles) to capture delayed toxicities. Imatinib exposure increased insignificantly after adding cyclophosphamide. Seven patients (20%) experienced stable disease for >6 months. Circulating tumour, endothelial, or immune cells were not associated with progression-free survival. CONCLUSION: The combination of metronomic cyclophosphamide, imatinib, and bevacizumab is safe and tolerable without significant drug interactions. A subset of patients experienced prolonged stable disease independent of dose level.


Subject(s)
Antibodies, Monoclonal, Humanized/therapeutic use , Antineoplastic Agents/therapeutic use , Benzamides/therapeutic use , Colorectal Neoplasms/drug therapy , Cyclophosphamide/therapeutic use , Piperazines/therapeutic use , Pyrimidines/therapeutic use , Adult , Aged , Angiogenesis Inhibitors/adverse effects , Angiogenesis Inhibitors/pharmacokinetics , Angiogenesis Inhibitors/therapeutic use , Antibodies, Monoclonal, Humanized/adverse effects , Antibodies, Monoclonal, Humanized/pharmacokinetics , Antineoplastic Agents/adverse effects , Antineoplastic Agents/pharmacokinetics , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Antineoplastic Combined Chemotherapy Protocols/pharmacokinetics , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Benzamides/adverse effects , Benzamides/pharmacokinetics , Bevacizumab , Cyclophosphamide/adverse effects , Cyclophosphamide/pharmacokinetics , Drug Administration Schedule , Female , Humans , Imatinib Mesylate , Male , Maximum Tolerated Dose , Middle Aged , Neoplastic Cells, Circulating/drug effects , Piperazines/adverse effects , Piperazines/pharmacokinetics , Pyrimidines/adverse effects , Pyrimidines/pharmacokinetics , Treatment Outcome
6.
Child Care Health Dev ; 39(2): 185-93, 2013 Mar.
Article in English | MEDLINE | ID: mdl-22066491

ABSTRACT

BACKGROUND: Over the past two decades, there is increasing emphasis being placed upon providing family-centred care (FCC) in paediatric oncology settings. However, there is a lack of knowledge of FCC in paediatric oncology from the perspectives of immigrant parents. The purpose of this paper is to describe Chinese and South Asian immigrant parents' experiences of FCC in paediatric oncology settings in Canada. METHODS: This study adopted a constructivist grounded theory approach. Fifty first generation Chinese and South Asian parents of children with cancer who were at least 6 months post-diagnosis were recruited from six Canadian paediatric oncology centres. Interviews were conducted in English, Cantonese, Mandarin, Urdu, Punjabi or Hindi, and transcribed into English. Analysis involved line-by-line, focused and theoretical coding, and the use of the constant comparison method. RESULTS: Findings indicated that overall parents were highly satisfied with the care and services they received, and their experiences were reflective of the key elements of FCC. However, there were some areas of concern identified by participants: parents not perceiving themselves as a member of the medical team; inconsistency in the quality and co-ordination of services among healthcare providers; disrespectful and mechanical manner of a few healthcare providers; and parents' discomfort with healthcare providers communicating sensitive health-related information directly with their child. CONCLUSIONS: In order to successfully provide family-centred services to immigrant parents of children with cancer, better communication of the elements of FCC between healthcare staff and families is needed to negotiate a clear role for the parents as partners of the healthcare team. Moreover, a better understanding of how family relationships are structured in immigrant families will assist healthcare providers to balance the best interests of the child with that of the family as a unit.


Subject(s)
Child Health Services/organization & administration , Emigrants and Immigrants/psychology , Neoplasms/ethnology , Oncology Service, Hospital/organization & administration , Parents/psychology , Adolescent , Adult , Asia/ethnology , Attitude to Health , Canada , Child , Child, Preschool , China/ethnology , Family , Female , Health Services Research/methods , Humans , Infant , Infant, Newborn , Male , Middle Aged , Neoplasms/therapy , Patient-Centered Care/organization & administration , Professional-Family Relations , Qualitative Research , Socioeconomic Factors
8.
Scott Med J ; 50(3): 102-6, 2005 Aug.
Article in English | MEDLINE | ID: mdl-16163994

ABSTRACT

BACKGROUND: There are few real life independent comparative studies of atypical antipsychotics. We prospectively examined five commonly used atypical antipychotics in the UK, without support from the pharmaceutical industry. METHOD: Prospective naturalistic systematic clinical evaluation. Patients being newly prescribed atypical anti-psychotics over a one year period were assessed by psychiatrists at initiation and after six months treatment using five outcome measures: clinical global impression; positive and negative psychotic symptoms; drug related side effects; and quality of life. RESULTS: 373 patients participated in total. Olanzapine and risperidone produced statistically significant reductions in all ratings at six months. Amisulpride, clozapine, and quetiapine were also studied. There was limited variance between the different drugs, although some sample sizes were small. CONCLUSION: Atypical anti-psychotics were found to be clinically effective, and produced similar outcomes. Routine monitoring of outcomes in psychiatry is feasible.


Subject(s)
Antipsychotic Agents/therapeutic use , Psychotic Disorders/diagnosis , Psychotic Disorders/drug therapy , Adolescent , Adult , Aged , Amisulpride , Antipsychotic Agents/adverse effects , Benzodiazepines/adverse effects , Benzodiazepines/therapeutic use , Clozapine/adverse effects , Clozapine/therapeutic use , Dibenzothiazepines/adverse effects , Dibenzothiazepines/therapeutic use , Dose-Response Relationship, Drug , Drug Administration Schedule , Female , Follow-Up Studies , Humans , Male , Middle Aged , Olanzapine , Patient Compliance , Probability , Prospective Studies , Psychiatric Status Rating Scales , Quality of Life , Quetiapine Fumarate , Risk Assessment , Risperidone/adverse effects , Risperidone/therapeutic use , Severity of Illness Index , Statistics, Nonparametric , Sulpiride/adverse effects , Sulpiride/analogs & derivatives , Sulpiride/therapeutic use , Treatment Outcome
9.
J Helminthol ; 78(1): 69-76, 2004 Mar.
Article in English | MEDLINE | ID: mdl-14972040

ABSTRACT

The reliability of different egg counting methods for estimating the intensity of Trichostrongylus tenuis infections in red grouse, Lagopus lagopus scoticus, was investigated in the autumn, when grouse may harbour high parasite intensities. Possible limitations to the use of these methods were also examined. Faecal egg counts were found to accurately estimate T. tenuis worm intensities, at least up to an observed maximum of c. 8000 worms. Two egg counting methods (smear and McMaster) gave consistent results, although the exact relationship with worm intensity differed according to the method used. Faecal egg counts significantly decreased with increasing length of sample storage time, but egg counts were reliable for estimating worm intensity for three weeks. The concentration of eggs in the caecum was also found to reliably estimate worm intensity. However, egg counts from frozen gut samples cannot be used to estimate worm intensities. These results conclude that, despite some limitations, faecal and caecum egg counts provide useful and reliable ways of measuring T. tenuis intensities in red grouse.


Subject(s)
Bird Diseases/parasitology , Feces/parasitology , Intestinal Diseases, Parasitic/veterinary , Trichostrongylosis/veterinary , Trichostrongylus , Animals , Cecum/parasitology , Freezing , Life Style , Parasite Egg Count , Time Factors , Tissue Preservation
11.
J Pediatr Health Care ; 15(5): 223-8, 2001.
Article in English | MEDLINE | ID: mdl-11562639

ABSTRACT

Despite federal, state, and community attention to the issue, pregnancy among adolescents remains a significant problem, with close to a million adolescents becoming pregnant each year. Most pregnancy prevention programs focus on young women; few effective or innovative programs exist for adolescent males. Current research supports the supposition that gender differences exist with regard to sexual knowledge, attitudes, and behaviors and that young men are at an educational disadvantage compared with their female peers. Gender differences must be addressed when planning effective pregnancy prevention interventions. Using the Health Belief Model, pediatric nurse practitioners can better design interventions that actively involve adolescent males in the responsibilities of pregnancy prevention.


Subject(s)
Family Planning Services/methods , Health Education/methods , Men , Pregnancy in Adolescence/prevention & control , Adolescent , Contraception Behavior , Female , Health Knowledge, Attitudes, Practice , Humans , Male , Pregnancy , Sexual Behavior , United States
12.
J Fr Ophtalmol ; 23(2): 141-50, 2000 Feb.
Article in French | MEDLINE | ID: mdl-10705110

ABSTRACT

BACKGROUND: Limbal autograft transplantation is the procedure of choice in the management of ocular surface disorders secondary to stem cells deficiency. The aim of our study was to investigate the indications, results and limits of this infrequent surgery. METHODS: Limbal autograft transplantation was performed in 8 patients and the mean follow-up period was 11 months. Limbal stem cell deficiency was due to chemical burns in 4 patients, history of prior surgery extending to the limbus in 2 patients, chronic limbitis with dystichiasis in one patient and persistent corneal epithelial defect after keratoplasty in one case. RESULTS: In 6 out of 8 cases, the stability of the ocular surface normalized and comfort significantly improved. Four of these patients had increased visual acuity after surgery. Two patients who presented with severe alkali burn did not respond well to limbal autotransplantation. CONCLUSION: Limbal autograft transplantation is a reliable and effective procedure in limbal stem cells deficiencies. New associate procedures such as amniotic membrane transplantation will however be necessary to improve the prognosis of very severe corneal surface disorders.


Subject(s)
Corneal Diseases/surgery , Corneal Transplantation , Epithelium, Corneal/surgery , Limbus Corneae/surgery , Adolescent , Adult , Aged , Aged, 80 and over , Female , Follow-Up Studies , Humans , Male , Middle Aged , Postoperative Complications/etiology , Suture Techniques , Transplantation, Autologous
13.
Pediatrics ; 105(1): e14, 2000 Jan.
Article in English | MEDLINE | ID: mdl-10617751

ABSTRACT

OBJECTIVES: To determine whether skin-to-skin contact between mothers and their newborns will reduce the pain experienced by the infant during heel lance. DESIGN: A prospective, randomized, controlled trial. SETTING: Boston Medical Center, Boston, Massachusetts. PARTICIPANTS: A total of 30 newborn infants were studied. INTERVENTIONS: Infants were assigned randomly to either being held by their mothers in whole body, skin-to-skin contact or to no intervention (swaddled in crib) during a standard heel lance procedure. OUTCOME MEASURES: The effectiveness of the intervention was determined by comparing crying, grimacing, and heart rate differences between contact and control infants during and after blood collection. RESULTS: Crying and grimacing were reduced by 82% and 65%, respectively, from control infant levels during the heel lance procedure. Heart rate also was reduced substantially by contact. CONCLUSION: Skin-to-skin contact is a remarkably potent intervention against the pain experienced during heel stick in newborns.


Subject(s)
Infant, Newborn/physiology , Mother-Child Relations , Pain Management , Touch , Blood Specimen Collection/adverse effects , Crying , Facial Expression , Female , Heart Rate , Humans , Infant Behavior , Infant, Newborn/psychology , Male , Pain/physiopathology , Pain/psychology , Pain Measurement , Prospective Studies , Skin
14.
Cornea ; 19(1): 12-6, 2000 Jan.
Article in English | MEDLINE | ID: mdl-10632001

ABSTRACT

PURPOSE: Asking the family of a deceased patient to consider eye donation is one of the most difficult aspects of the donation process. The aim of this prospective study was to describe the content of interviews with the families of potential donors and to analyze their reactions to improve the process of eye donation. METHODS: We consecutively met with 151 families of suitable corneal donors at the Rouen University Hospital. All interviews with donor families were analyzed using a preestablished questionnaire. RESULTS: In only 17.9% of cases was the family aware of the potential donor's last will. In 77.7% of these cases, the patient wished to donate. Procurement rate was 71.5%. This acceptance was mostly facilitated by the awareness and motivation of the hospital staff, the experience of the physician, and the 13.3-h period of time allowed after the donor's death. The commitment on the part of the ophthalmologist to carry out optimal anatomical restoration was a very important point for 32% of families who accepted donation. Twenty-one percent of families asked for a delay for reflection. This delay helped to obtain a positive response in 72.7% of cases and even sometimes helped families to reconsider a previously negative position (14% of initial refusals). CONCLUSION: We demonstrate that a high positive response (71.5%) can be obtained from the donor's family when a trained and motivated group manages the post-mortem cornea donation request.


Subject(s)
Cornea , Tissue Donors , Tissue and Organ Procurement/methods , Adult , Aged , Aged, 80 and over , Corneal Transplantation , Family , Female , Humans , Informed Consent , Interviews as Topic , Male , Middle Aged , Prospective Studies
15.
Br J Ophthalmol ; 83(1): 104-9, 1999 Jan.
Article in English | MEDLINE | ID: mdl-10209446

ABSTRACT

AIMS: A prospective study was carried out in order to evaluate the efficacy and safety of peribulbar anaesthesia during keratoplasty and to describe surgical conditions. METHODS: Of 137 consecutive keratoplasties, 100 (73%) were performed under peribulbar anaesthesia. Patients received a mean volume of 16.5 (SD 4) ml (range 9-22 ml) of a mixture of etidocaine, bupivacaine, and hyaluronidase. Ocular compression duration was at least 20 minutes and intraocular pressure (IOP) was measured with a Tonopen after injection, compression, and before trephination. Degree of akinesia, pain scoring, complications, and surgical conditions were studied. RESULTS: Before trephination, IOP was 5.73 mm Hg below the preinjection value and was never above 21 mm Hg. Akinesia was complete in 80% of cases and 94% of patients found that surgery was painless. Two patients (2%) were very agitated during surgery. The last patient presented with an acute intraoperative suprachoroidal haemorrhage that did not result in a true expulsive haemorrhage despite an "open sky" situation. Surgical conditions were judged to be optimal by the patients in 92% of cases and by the surgeon in 98% of cases. CONCLUSION: These results demonstrate that peribulbar anaesthesia offers excellent anaesthesia and akinesia during keratoplasty and may be recommended for this type of surgery.


Subject(s)
Anesthesia, Local/methods , Corneal Transplantation/methods , Adolescent , Adult , Aged , Aged, 80 and over , Child , Corneal Transplantation/adverse effects , Female , Humans , Intraocular Pressure , Male , Middle Aged , Patient Satisfaction , Prospective Studies
17.
Public Health ; 110(4): 229-35, 1996 Jul.
Article in English | MEDLINE | ID: mdl-8757704

ABSTRACT

Injuries sustained in schools account for 20-30% of all accident and emergency attendances in school age children. Little information has been available on the epidemiology of school accidents in the United Kingdom. Two years of routine school incident reports were analysed from Renfrew Sub-Region, an area with a school roll of 55,521 children attending 135 schools. Schools returned 1,660 report forms in the two year period, of which 1,440 referred to injuries to school children. The peak incidence of injuries was in the 10-12 year age group. The male:female ratio was 1.37:1. Cuts/ laceration and fractures were the commonest diagnoses reported for both Primary and Secondary Schools. Injuries to face and features were commonest in Primary, and upper limb injuries in Secondary Schools. Uncontrolled areas, e.g. playgrounds, stairways and corridors were the most frequent places of occurrence in Primary Schools (Relative Risk 5.24, 95% C.I. 3.28-8.35). Report accuracy was assessed by comparing one year of school reports in a Local Government District to records in the local District General Hospital. This identified 156 children who had attended hospital as the result of a school accident. Schools overestimated the number of fractures by 27%, but where schools had not provided a diagnosis, 15.4% were identified as fractures in hospital records. Each child seen at the hospital received an average of 2.1 X-rays. Nine children underwent manipulations under general anaesthetic. Seventeen children were admitted to hospital, and the group required 103 outpatient follow-up appointments.


Subject(s)
Schools , Wounds and Injuries/epidemiology , Adolescent , Child , Female , Hospitalization/statistics & numerical data , Humans , Incidence , Male , Population Surveillance , Risk Factors , Risk Management , Scotland/epidemiology , Wounds and Injuries/etiology
18.
Psychoneuroendocrinology ; 21(4): 421-30, 1996 May.
Article in English | MEDLINE | ID: mdl-8844880

ABSTRACT

To delineate putative cognitive effects of estrogen in women with Alzheimer's disease, we compared neuropsychological performances in three groups of patients with clinically diagnosed Alzheimer's disease: women receiving estrogen replacement therapy (n = 9), women not receiving replacement therapy (n = 27), and men (n = 26). Untreated women and men were matched by age, education, and duration of dementia symptoms to women receiving estrogen replacement. We hypothesized that treated women would have better scores on neuropsychological tasks. Results showed that women receiving hormonal therapy performed significantly better than other women on some, but not all, tasks; on no task did women receiving estrogen score significantly worse. The largest group difference was on the Boston Naming Test, a semantic memory task previously shown to be more impaired in women with Alzheimer's disease than in men with this diagnosis. Of tests considered in a discriminant analysis, the naming task was the only neuropsychological variable to distinguish between the two women's groups. Mean differences between estrogen-treated women and men were small and were not statistically significant. Findings support the hypothesis that estrogen therapy for women with Alzheimer's disease is associated with better cognitive skills and that previously noted gender-associated differences in Alzheimer's disease may reflect a state of acquired estrogen deficiency among women with this disorder.


Subject(s)
Alzheimer Disease/drug therapy , Alzheimer Disease/psychology , Cognition/physiology , Estrogen Replacement Therapy , Aged , Cognition/drug effects , Female , Humans , Language Tests , Male , Memory, Short-Term/drug effects , Memory, Short-Term/physiology , Neuropsychological Tests , Psychiatric Status Rating Scales , Regression Analysis , Space Perception/drug effects , Space Perception/physiology , Speech/drug effects
19.
In Vitro Cell Dev Biol Anim ; 31(5): 379-86, 1995 May.
Article in English | MEDLINE | ID: mdl-7633673

ABSTRACT

We examined 12 non-small cell lung carcinoma cell lines for expression of airway goblet, serous, and mucous cell characteristics. The cells expressed some ultrastructural traits of secretory epithelial cells but none contained secretory granules typical of the airway secretory cells. Using immunocytochemistry and cell-specific monoclonal antibodies, we identified heterogeneous expression of goblet, mucous, and serous cell markers among the cell lines. After metabolic radiolabeling, cells incorporated isotope into high molecular weight material. Incubation of pulse-radiolabeled cells with a number of known mucus secretogogues revealed that 5 of the 12 cell lines released radiolabeled material in response to the agonists. However, in each cell line only one of the receptor-activated pathways tested was intact. Although we did not identify a single cell line expressing a phenotype similar to normal airway secretory cells, particular functions retained by some of these cell lines may make them useful for specific studies of mucus production or secretion.


Subject(s)
Bronchi/cytology , Carcinoma, Non-Small-Cell Lung/pathology , Lung Neoplasms/pathology , Trachea/cytology , Tumor Cells, Cultured , Bronchi/metabolism , Bronchi/ultrastructure , Carcinoma, Non-Small-Cell Lung/metabolism , Cell Differentiation , Chromatography, Agarose , Epithelial Cells , Epithelium/metabolism , Epithelium/ultrastructure , Humans , Immunohistochemistry , Lung Neoplasms/metabolism , Mucus/metabolism , Trachea/metabolism , Trachea/ultrastructure
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