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PubMed2002

Changes in skin physiology during bath PUVA therapy.

BACKGROUND: Frequent bathing leads to a skin barrier damage with various changes in physiological skin parameters. Conversely, ultraviolet (UV) irradiation may improve the impaired skin barrier by reducing inflammatory reactions. OBJECTIVES: The aim of this study was to investigate the changes of physiological skin parameters during a therapy with 8-methoxypsoralen (8-MOP) bathing and subsequent UVA irradiation. METHODS: Thirty patients with a skin disease without barrier disruption were treated with daily bathing in a 8-MOP solution (0.0005%) and subsequent UVA irradiation. Multiple physiological skin parameters (transepidermal water loss, skin blood flow, skin colour, sebum content, skin hydration) were measured repeatedly on clinically non-affected skin on the back, forearm and forehead. In addition, patch testing with sodium lauryl sulphate (SLS) (0.5%) was performed on the forearm and on the back. RESULTS: We found a moderate but significant disturbance of skin barrier and hydration on the forearm and the back (bathing + irradiation) after increasing dosages of therapy. In addition, SLS testing leads to stronger reactions. CONCLUSIONS: We conclude that on clinically healthy skin the impairment of skin barrier by frequent bathing cannot be completely compensated by subsequent UVA irradiation. When conducting a treatment with 8-MOP bathing and UVA irradiation a concomitant therapy supporting the recovery of skin barrier, e.g. with moisturizer, should be performed.

Adult↗
PubMed1999

The effect of a new sewage treatment plant on faecal indicator numbers, campylobacters and bathing water compliance in Morecambe Bay.

Until recently, sewage from Morecambe was macerated, but otherwise untreated, and discharged at high water via a short outfall pipe into Morecambe Bay adjacent to a recognized bathing water. In March 1997, a new biological sewage treatment plant came on-line and the effluent was discharged via a longer outfall pipe into the Bay south of Heysham. The effect of the new sewage treatment on the quality of the bathing waters was monitored by testing sea water collected from the three EU designated bathing waters on Morecambe Bay: Morecambe North, Morecambe South and Heysham. After sewage treatment came on-line, the numbers of faecal coliforms and faecal streptococci were lower at Morecambe North and Morecambe South but higher at Heysham. Although the changes in numbers were not always statistically significant, they were sufficient to affect compliance with the EU Bathing Water Directive Imperative (mandatory) standards. Compliance improved markedly at Morecambe North and South but declined at Heysham, the closest bathing site to the new outfall. Numbers of thermophilic campylobacters were similar in both years, which is suggestive of their sources being different from those of the indicator bacteria. Campylobacter lari and urease-positive thermophilic campylobacters (UPTC) were the only species of Campylobacter isolated from Morecambe's bathing waters. Very low numbers of Salmonella were found, with Salm, arizonae the only species isolated.

Campylobacter↗
PubMed1994

Effect of altered bathing pH on calcium activated force in alpha toxin permeabilised rat portal vein and human umbilical artery.

OBJECTIVE: The aim was to investigate the effect of altered bathing pH on calcium activated force generated by the contractile proteins in an alpha toxin permeabilised phasic (rat portal vein) and tonic (human umbilical artery) smooth muscle. METHODS: Strips of the two muscles were permeabilised using crude alpha toxin from Staphylococcus aureus (2 mg.ml-1). The relationship between [Ca2+] and tension was then examined at different bathing pH values. [Ca2+] was monitored using indo-1 fluorescence. RESULTS: GTP-gamma-S (100 microM) potentiated maximum calcium activated force in rat portal vein on average to 146%, but had no significant effect on human umbilical artery, confirming the difference in contractile behaviour between the two muscles. Lowering bathing pH from 7.2 to 6.7 depressed submaximal calcium activated force and increased maximum calcium activated force in rat portal vein. Raising bathing pH from 7.2 to 7.7 depressed both submaximal and maximum calcium activated force in rat portal vein. Altered bathing pH had no significant effect on either maximum or submaximal calcium activated force in human umbilical artery. The calcium sensitivity of tension production was not significantly effected by acidic pH in either preparation. However, alkaline pH caused a similar fall in the calcium sensitivity in both preparations. CONCLUSIONS: Tension generated from the contractile proteins of a phasic smooth muscle (rat portal vein) are more sensitive to altered bathing pH than those of a tonic smooth muscle (human umbilical artery).

Animals↗
PubMed2002

Non-Markoffian effects of a simple nonlinear bath.

We analyze a model of a nonlinear bath consisting of a single two-level system coupled to a linear bath (a classical noise force in the limit considered here). This allows us to study the effects of a nonlinear, non-Markoffian bath in a particularly simple situation. We analyze the effects of this bath onto the dynamics of a spin by calculating the decay of the equilibrium correlator of the z-component of the spin. The exact results are compared with those obtained using three commonly used approximations: a Markoffian master equation for the spin dynamics, a weak-coupling approximation, and the substitution of a linear bath for the original nonlinear bath.

Journal Article↗
PubMed2005

Bathing in a magnesium-rich Dead Sea salt solution improves skin barrier function, enhances skin hydration, and reduces inflammation in atopic dry skin.

Magnesium salts, the prevalent minerals in Dead Sea water, are known to exhibit favorable effects in inflammatory diseases. We examined the efficacy of bathing atopic subjects in a salt rich in magnesium chloride from deep layers of the Dead Sea (Mavena(R) Dermaline Mg(46) Dead Sea salt, Mavena AG, Belp, Switzerland). Volunteers with atopic dry skin submerged one forearm for 15 min in a bath solution containing 5% Dead Sea salt. The second arm was submerged in tap water as control. Before the study and at weeks 1-6, transepidermal water loss (TEWL), skin hydration, skin roughness, and skin redness were determined. We found one subgroup with a normal and one subgroup with an elevated TEWL before the study. Bathing in the Dead Sea salt solution significantly improved skin barrier function compared with the tap water-treated control forearm in the subgroup with elevated basal TEWL. Skin hydration was enhanced on the forearm treated with the Dead Sea salt in each group, which means the treatment moisturized the skin. Skin roughness and redness of the skin as a marker for inflammation were significantly reduced after bathing in the salt solution. This demonstrates that bathing in the salt solution was well tolerated, improved skin barrier function, enhanced stratum corneum hydration, and reduced skin roughness and inflammation. We suggest that the favorable effects of bathing in the Dead Sea salt solution are most likely related to the high magnesium content. Magnesium salts are known to bind water, influence epidermal proliferation and differentiation, and enhance permeability barrier repair.

Administration, Cutaneous↗
PubMedDate not supplied

Penetration kinetics of 8-methoxypsoralen after 8-methoxypsoralen bath procedure with and without UVA irradiation.

Administration of 8-methoxypsoralen (8-MOP) in a dilute bath water solution is an effective therapeutic alternative for systemic application of 8-MOP, avoiding systemic side effects such as nausea and cataractogenesis. The aim of our study was to determine the epicutaneous penetration of 8-MOP in a dilute bath water solution with and without additional UVA irradiation in human skin under in vitro conditions. To simulate the PUVA bath procedure, 8 skin samples were exposed to radioactively labeled 8-MOP in a water solution. After 20 min, the test solution was removed and the skin surface was dried. Immediately after the bath procedure, 4 of the skin samples were irradiated with 0.5 J/cm2 UVA. During a test period of 15 h, the 8-MOP penetration was observed. In both test groups (with and without UVA irradiation) 8-MOP permeated through all skin layers between 30 min and 1 h after application. Compared to the unirradiated skin samples, the UVA-irradiated skin samples showed a significantly slower increase and a lower maximum of 8-MOP permeation. Following our results, UVA irradiation of 8-MOP-exposed skin samples led to a significantly decreased permeation rate. This might be due to UVA-induced links between 8-MOP molecules and human DNA. In addition, we investigated the levels of radioactivity emitted by tritium-labeled 8-MOP in stratum corneum, epidermis and dermis up to 30 min after 8-MOP bath in two further test groups with and without additional UVA irradiation. The statistical analysis revealed no significant differences between these two test groups. Thus, the levels of radioactivity remained constant in the epidermis and dermis during the test period of 30 min. Since the levels of radioactivity were constant up to 30 min after UVA irradiation, a previously supposed marked loss of 8-MOP concentration might not be responsible for the rapid extinction of observed in vivo photosensitivity within 1 h after PUVA bath observed in vivo in human skin.

Adult↗
PubMed1977

Tissue bath improvements for the Oxford Vibratome.

Modification of the tissue bath on the Oxford Vibratome Sectioning System facilitates simpler and more efficient operation. The basic modification consists of the introduction of a small, approximately 25 ml capacity tissue bath into the larger bath provided by the instrument's design. Temperature in the modified system is controlled by using the instrument's large bath as an ice chamber. This modification allows better temperature control, easier retrieval of tissue sections, and more efficient use of expensive buffers, reduces the chance of section carry-over from one specimen to another, and requires less cleanup time. When it is advantageous to have the tissue in a large volume of solution, more efficient section retrieval and solution use can still be obtained by substituting a wire mesh collection basket for the small tissue bath, while using the standard bath in the usual way.

Cold Temperature↗
PubMed2000

Effect of hyperthermic water bath on parameters of cellular immunity.

Effects of hyperthermic water bath on selected immune parameters (lymphocyte subpopulations, natural killer (NK) cell counts and their activity) were studied in a group of 10 volunteers. Application of hyperthermic water bath (both topical and whole-body) was followed by a significant reduction of relative B lymphocyte counts. Whole-body hyperthermic water bath reduced relative total T lymphocyte counts, increased relative CD8+ T lymphocyte and NK cell counts and increased NK activity. Whole-body hyperthermic bath increased somatotropic hormone (STH) activity in eight out of 10 volunteers; higher relative counts of CD8+ lymphocytes and NK cells were observed compared with the group of volunteers not responding to hyperthermic water bath by STH secretion. In five volunteers STH was released in response to local hyperthermic water bath and the NK activity of lymphocytes also increased but their relative counts did not. The results suggest that these increases in CD8+ lymphocyte and NK cell counts are probably dependent on increased STH production.

Adult↗
PubMed1990

[Combination of a carbon dioxide bath and a diuretic--follow-up study of several days].

A series of 22 men underwent a 30 minute carbon dioxide bath and was simultaneously administered Hydrochlorothiazide SPOFA. Their renal response was studied, and that both separately to the bath or the diuretic and to their combination. Diuresis was increased by 200 l x 10(-3) after the carbon dioxide bath and by 500 l x 10(-3) after hydrochlorothiazide. This increase was even further enhanced after the combination of the two treatments. Sodium excretion showed a similar increase, whereas kaliuresis did not exhibit such a marked rise and the differences between the response to the bath and to the diuretic were small. Repeated combination of the carbon dioxide bath and the diuretic resulted in a slightly increasing diuresis over the days studied. The authors emphasize the necessity to understand the bath--drug interactions particularly in balneological practice and substantiate the advantage and usefulness of the combination studied in indicated cases.

Adult↗
PubMedDate not supplied

[Pharmacokinetic study of percutaneous absorption of salicylic acid from baths with salicylate methyl ester and salicylic acid].

Percutaneous uptake of methyl salicylate was investigated by use of Leukona-Rheumabad (Dr. Atzinger) in 10 volunteers. Percutaneous uptake of salicylic acid was investigated by use of Contrheuma-Bad (Spitzner) in 15 volunteers. By use of bathing concentration of 0.03 g/l of methyl salicylate, plasma levels of 220-820 ng/ml were found 1 h after beginning, and 46-193 ng/ml after 6 h. 2.3-8.7 mg of salicyluric acid was eliminated on the first day, and 0.47 to 1.48 mg on the second day. By use of bathing concentration of 0.33 g/l of salicylic acid constant plasma levels of 10 +/- 1.27 ng/ml were found in a period of 24 h. The renal elimination of 0.92 +/- 0.14 at first day, 0.72 +/- 0.11 at second day, and 0.50 +/- 0.08 mg salicyluric acid at third day was found. Salicylic acid was eliminated 0.086 +/- 0.009 resp. 0.079 +/- 0.007 resp. 0.043 +/- 0.011 mg by those days. The half-time of elimination in urine after methyl salicylate bathing is (as with injected salicylic acid) between 2.4 to 4 h. Conversely half-time of elimination in urine by salicylic acid bathing is between 30 to 50 h, and is greater with salicylic acid bathing than with other application forms. This is in agreement with earlier examinations and results which point out the deposition of salicylic acid in skin. Any definitive deposition of salicylic acid in skin by methyl salicylate bathing was not found.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1989

[Improving the quality of bathing water by oxygen releasing substances].

The bath water of an indoor swimming bath of 25m length has been preparatory acc. to TGL 37780/02 and by procedings of flocculation-filtration-chlorination. the filter drain water (clear water) had been supplemented by 20...30 percentage hydrogen peroxide or potassium peroxide sulphate. The reaction with chlorine existing in surplus and hydrogen peroxide results in a spontaneous formation of nascinating oxygen. The occurring wet oxidation of contents substances of the bath water also with an increased frequentation of the indoor swimming bath results in reduced rates of CSVMn and chloramine. This fact can be explained by the concurring reaction between oxygen and chlorine. Because of its low expense, the forced decomposition of hydrogen peroxide could be an alternative for utilization of ozone in small bathes. Contrary to this the combination potassium peroxide sulphate/chlorine will not result in such a significant improvement of the quality of bath water.

Disinfectants↗
PubMed1995

[Survival ability of Trichomonas vaginalis in mineral baths].

The role of mineral thermal baths and particularly of bath fittings such as benches and toilet seats in the spreading of Trichomonas vaginalis is controversial. In order to clarify the possibility of transmission by smear infection of this ubiquitous urogenital parasite the ability to survive was investigated in 11 mineral baths in Baden-Württemberg by contamination of water samples of varying mineral content. In addition, Trichomonas-contaminated water samples were placed in Petri-dishes on different benches in the bath area to determine the different milieu-factors influencing survival and thus the possibility of smear infections. The determination of viable cells was carried out by recultivation and semiquantitative extinction measurement. The survival time of Trichomonas vaginalis in the water samples of the 11 mineral baths varied considerably from 30 min up to more than 3 hours. The total mineral content played the most important role. When exposed in Petri dishes in addition the evaporation of the medium (mineral water) is of importance. Generally at high evaporation rates the cells will lose viability faster than in closed tubes. But also in open dishes in 4 mineral baths viable Trichomonads were still detectable after 3 hours. Generally the ability of Trichomonas vaginalis to survive in water of a total mineral content of 0.05-2.2% is increased to such an extent that infection is theoretically possible. Transmission in the mineral pool itself appears nevertheless highly unlikely due to the dilution effect of the enormous water volume. However transmission of infection via wet, contaminated benches and toilet seats cannot be generally ruled out.

Animals↗
PubMed2005

Classification of bathing water quality based on the parametric calculation of percentiles is unsound.

Analyses of Irish bathing water quality data sets are reported to investigate whether the parametric calculations proposed in the draft Bathing Water Directive are valid. Faecal coliforms (assumed to be Escherichia coli) and faecal streptococci (assumed to be intestinal enterococci) have been analysed separately. It was noted that classifications based on the parametric 95th percentile calculations disagreed with those based on percentage compliance with the standards on 13.8% of occasions. When these disagreements were studied, it was found that the datasets frequently contained many censored data points (Result < 1). Also, the datasets were not log normally distributed on at least 85% of occasions. Both these findings fatally undermine the validity of using a parametric method for calculating 95th percentiles to classify bathing water quality. By contrast the non-parametric Hazen method is a better estimate of true population 95th percentiles, but essentially gives very similar classifications to the percentage compliance approach, fully agreeing on over 95% of occasions. The same is also true when considering 90th percentiles. A series of Monte Carlo studies were also conducted to determine the impact of small numbers. It was ascertained that small sample sizes are very undependable in determining bathing water classification and the parametric method in particular is particularly unreliable. In conclusion, the parametric method for calculating bathing water compliance is so severely and fatally flawed statistically that it should not form the basis of any legislation. The Hazen method gives a better estimate of true 90th or 95th percentiles, though as the resultant classifications agree with percentage compliance so closely it is doubtful that there is any statistical value in using a percentile approach over the long established and well understood percentage compliance approach.

Bathing Beaches↗
PubMed1998

Is there an association between water baths during labor and the development of chorioamnionitis or endometritis?

OBJECTIVE: Our purpose was to determine whether water baths during labor are associated with the development of chorioamnionitis or endometritis. STUDY DESIGN: One hundred ten cases of chorioamnionitis or endometritis and 97 controls were identified among singleton term gestations from the University of California at San Francisco perinatal database. Medical record review and patient interviews provided information on membrane rupture, history of bathing during labor, and relaxation and pain relief perceived by patients who experienced water bathing during labor. RESULTS: There was no statistically significant association between water baths during labor and the occurrence of chorioamnionitis or endometritis (odds ratio 0.93 [95% confidence interval 0.53 to 1.63]). CONCLUSIONS: Water baths during labor are not associated with chorioamnionitis or endometritis.

Adult↗
PubMed1997

Treatment of chronic palmoplantar eczema with local bath-PUVA therapy.

BACKGROUND: Systemic PUVA therapy may be useful in the treatment of chronic palmoplantar eczema. Topical PUVA-paint avoids some of the unwanted side effects of systemic psoralens and has been used successfully in the treatment of palmoplantar eczema and psoriasis. However, few data are available on the effectiveness of local bath-PUVA therapy in palmoplantar eczema. OBJECTIVE: Our purpose was to assess the effectiveness of local bath-PUVA therapy in 28 patients with chronic palmar or plantar eczema or both who were resistant to conventional topical treatment. METHODS: After fungal or bacterial infection had been excluded in all patients, hands or feet or both were soaked for 15 minutes in warm water containing 1 mg/L 8-methoxypsoralen. Immediately after, the skin was irradiated with increasing doses of UVA, starting with 0.5 J/cm2. PUVA-bath therapy was performed 4 times a week up to a total of 25 treatments. No additional therapy was allowed except emollients. RESULTS: Excellent or good effects were achieved in 93% of the patients with dyshidrotic and in 86% of the patients with hyperkeratotic eczema. In the patients with dyshidrotic eczema, the cumulative doses and the highest single doses of UVA were lower than those in the patients with hyperkeratotic eczema (21.4 vs 27.9 J/cm2 and 2.4 vs 3.0 J/cm2 of UVA), but this was not statistically significant. No phototoxic reactions were observed. CONCLUSION: Local bath-PUVA therapy is of value in the management of chronic palmoplantar eczema resistant to standard modes of topical treatment. Compared with topical PUVA-paint, local bath-PUVA therapy has several advantages, particularly the absence of phototoxic reactions, severe hyperpigmentation, and protracted photosensitivity.

Adolescent↗
PubMed1997

The efficacy of tepid sponge bathing to reduce fever in young children.

Tepid sponge baths distress febrile children, and their efficacy at reducing fever has not been established. This study compared fever reduction and with (1) acetaminophen alone and (2) acetaminophen plus a 15-minute tepid sponge bath. Twenty children, ages 5 to 68 months, who presented to the emergency department or urgent care center with fever of > or = 38.9 degrees C were randomized to receive (1) acetaminophen alone or (2) acetaminophen plus a 15-minute tepid sponge bath. All subjects received a 15-mg/kg dose of acetaminophen. Tympanic temperature was monitored every 30 minutes for 2 hours. Subjects were monitored for signs of discomfort (crying, shivering, goosebumps). Sponge-bathed subjects cooled faster during the first hour but there was no significant temperature difference between the groups over the 2-hour study period (P = .871). Subjects in the sponge bath group had significantly higher discomfort scores (P = .009).

Acetaminophen↗
PubMed1998

Sudden onset aphonia caused by a Japanese-style bath.

An 86-year-old man was referred by his family physician to our clinic because of sudden onset aphonia immediately after a Japanese-style bath. On examination, the only abnormality was aphonia, with an otherwise normal physical examination. However, we found vocal fold oedema on laryngeal fibrescopy. For treatment, he was immediately given 30 mg prednisolone intravenously. Twelve hours after injection the oedema had completely disappeared and his aphonia had resolved. The patient was healthy for three months after returning home. However, at the beginning of a cold winter night he again complained of sudden onset hoarseness, after taking a Japanese-style bath. Japanese-style baths are completely different from Western-style baths. There is a temperature difference of almost 30 degrees C between the inside and outside of a bath; the transition may represent a type of physical exercise in elderly and exhausted individuals. This difference could cause a cold or heat-induced allergic reaction. We strongly recommend a laryngeal study in case of sudden onset aphonia.

Aged↗
PubMed2002

Effects of sponge bathing on vagal tone and behavioural responses in premature infants.

The purpose of this study was to evaluate the effects of sponge bathing on physiological (vagal tone, heart rate, heart period, oxygen saturation) and behavioural responses in newly born premature infants in the intensive care unit of a university hospital in South Korea. A convenience sample was taken of 40 infants who were between 27 and 36 weeks gestational age at birth and free of congenital defects. The infants' physiological parameters were recorded 10 min before, during and after bathing. To determine behavioural status, tools were modified from the instruments used in a previous study by Scafidi et al. (1990). Analysis of the results showed that the premature infants reacted to sponge bathing with decreases in vagal tone and heart period and increases in heart rate. Oxygen saturation did not demonstrate any remarkable alteration during bathing. Also, there were no significant differences in behavioural signs, motor activity and behavioural distress. Results of this study indicated that nurses in a neonatal intensive care unit should decide according to a premature infant's physiological state whether or not to give a sponge bath.

Analysis of Variance↗