Consumption of <Emphasis Type="Italic">Bifidobacterium animalis</Emphasis> subsp. <Emphasis Type="Italic">lactis</Emphasis> BB-12 in yogurt reduced expression of TLR-2 on peripheral blood-derived monocytes and pro-inflammatory cytokine secretion in young adults

Purpose

Probiotic bacteria modulate immune parameters and inflammatory outcomes. Emerging evidence demonstrates that the matrix used to deliver probiotics may influence the efficacy of probiotic interventions in vivo. The aims of the current study were to evaluate (1) the effect of one species, Bifidobacterium animalis subsp. lactis BB-12 at a dose of log10 ± 0.5 CFUs/day on immune responses in a randomized, partially blinded, 4-period crossover, free-living study, and (2) whether the immune response to BB-12 differed depending on the delivery matrix.

Methods

Healthy adults (n = 30) aged 18–40 years were recruited and received four treatments in a random order: (A) yogurt smoothie alone; smoothie with BB-12 added (B) before or (C) after yogurt fermentation, or (D) BB-12 given in capsule form. At baseline and after each 4-week treatment, peripheral blood mononuclear cells (PBMCs) were isolated, and functional and phenotypic marker expression was assessed.

Results

BB-12 interacted with peripheral myeloid cells via Toll-like receptor 2 (TLR-2). The percentage of CD14⁺HLA-DR⁺ cells in peripheral blood was increased in male participants by all yogurt-containing treatments compared to baseline (p = 0.0356). Participants who consumed yogurt smoothie with BB-12 added post-fermentation had significantly lower expression of TLR-2 on CD14⁺HLA-DR⁺ cells (p = 0.0186) and reduction in TNF-α secretion from BB-12- (p = 0.0490) or LPS-stimulated (p = 0.0387) PBMCs compared to baseline.

Conclusions

These findings not only demonstrate a potential anti-inflammatory effect of BB-12 in healthy adults, but also indicate that the delivery matrix influences the immunomodulatory properties of BB-12.

     

Relationships of alcohol dehydrogenase 1B (<Emphasis Type="Italic">ADH1B</Emphasis>) and aldehyde dehydrogenase 2 (<Emphasis Type="Italic">ALDH2</Emphasis>) genotypes with alcohol sensitivity,drinking behavior and problem drinking in Japanese older men

Objectives

Many East Asians have the genetic polymorphisms rs1229984 in alcohol dehydrogenase 1B (ADH1B) and rs671 in aldehyde dehydrogenase 2 (ALDH2). Here we analyzed the relationships of the two genotypes with alcohol sensitivity, drinking behavior and problem drinking among older and younger men living in rural areas of Japan.

Methods

The subjects were 718 Japanese men aged 63.3 ± 10.8 (mean ± SD), categorized into the older (≥65 years, n = 357) and younger (<65 years, n = 361) groups. Facial flushing frequency, drinking behavior and positive CAGE results were compared among the genotypes using Bonferroni-corrected χ² test and a multivariate logistic regression analysis adjusting for age, BMI and lifestyle factors.

Results

The frequency of ‘always’ facial flushing among the ADH1B*1/*2 carriers was significantly lower than that among the ADH1B*2/*2 carriers in the older group (P < 0.01). The alcohol consumption (unit/day) in the ADH1B*1/*2 carriers tended to be higher compared with that in the ADH1B*2/*2 carriers among the older group (P = 0.050). In the younger group, no significant differences in alcohol sensitivity and drinking habits were generally found among the ADH1B genotypes. The ADH1B*1/*1 genotype tended to be positively associated with problem drinking in the older group (P = 0.080) but not in the younger group. The ALDH2 genotypes consistently and strongly affected the alcohol sensitivity, drinking behavior and problem drinking in both the younger and older group.

Conclusions

We for the first time observed a significant difference in alcohol sensitivity between ADH1B*1/*2 and ADH1B*2/*2 in older men aged 65 and above.

     

Anthropometrically predicted visceral adipose tissue and blood-based biomarkers: a cross-sectional analysis

Purpose

We hypothesized that anthropometrically predicted visceral adipose tissue (apVAT) accounts for more variance in blood-based biomarkers of glucose homeostasis, inflammation, and lipid metabolism than body mass index (BMI), waist circumference (WC), and the combination of BMI and WC (BMI + WC).

Methods

This was a cross-sectional analysis of 10,624 males and females who participated in the Third National Health and Nutrition Examination Survey (NHANES III; 1988–1994). apVAT was predicted from a validated regression equation that included age, height, weight, waist, and thigh circumferences. Bootstrapped linear regression models were used to compare the proportion of variance (R ²) in biomarkers explained by apVAT, BMI, WC, and BMI + WC.

Results

apVAT accounted for more variance in biomarkers of glucose homeostasis than BMI (?R ² = 8.4–11.8 %; P < 0.001), WC (?R ² = 5.5–8.4 %; P < 0.001), and BMI + WC (?R ² = 5.1–7.7 %; P < 0.001). apVAT accounted for more variance in biomarkers of inflammation than BMI (ΔR ² = 3.8 %; P < 0.001), WC (ΔR ² = 3.1 %; P < 0.001), and BMI + WC (ΔR ² = 2.9 %; P < 0.001). apVAT accounted for more variance in biomarkers of lipid metabolism than BMI (ΔR ² = 2.9–9.2 %; P < 0.001), WC (ΔR ² = 2.9–5.2 %; P < 0.001), and BMI + WC (ΔR ² = 2.4–4.1 %; P ≤ 0.01).

Conclusions

apVAT, estimated with simple and widely used anthropometric measures, accounts for more variance in blood-based biomarkers than BMI, WC, and BMI + WC. Clinicians and researchers may consider utilizing apVAT to characterize cardio-metabolic health, particularly in settings with limited availability of imaging and laboratory data.

     

Growth Recovery of <Emphasis Type="Italic">Lemna gibba</Emphasis> and <Emphasis Type="Italic">Lemna minor</Emphasis> Following a 7-Day Exposure to the Herbicide Diuron

In agricultural catchments, aquatic ecosystems can experience a pulse exposure to pesticides. Following such exposure, non-target organisms that are not extirpated may recover. This paper investigates the potential of two duckweed species (Lemna minor and Lemna gibba) to recover from a 7-day exposure to different concentrations (0.4–208 µg L^?1) of the herbicide diuron. There was significant inhibition in the growth and biomass after the initial 7-day exposure (e.g. frond number EC₅₀ = 59.2 and 52.2 µg L^?1 for L. minor and L. gibba, respectively). Following transfer to clean media, recovery (the highest concentration yielding no significant difference in the effect endpoint from the control) was observed for all effects endpoints at concentrations ranging 60–111 µg L^?1 for L. minor and 60–208 µg L^?1 for L. gibba. These results suggest that recovery is possible for primary producers at environmentally relevant concentrations considered significant in ecological risk assessment.     

Fluctuating patterns in quality of life outcomes among patients with moderate and severe stages of chronic obstructive pulmonary disease

Purpose

How changes in depression and anxiety and well-being may fluctuate with changes in disease-specific quality of life (QOL), and further how changes in well-being may fluctuate with changes in depression and anxiety among patients with moderate and severe chronic obstructive pulmonary disease (COPD).

Methods

In a longitudinal study (as part of a randomized controlled trial), we investigated 150 patients with moderate and severe COPD at baseline, 143 at 4 weeks, and 130 at 4 months. Lung function was tested, and a questionnaire was completed at all appointments. The questions captured demographic variables, disease-specific QOL (St. George’s Respiratory Questionnaire), anxiety and depression (Hospital Anxiety and Depression Scale), and well-being (World Health Organization-5 Well-being Index). Multiple regression analyses were performed.

Results

At 4 weeks and 4 months, changes in disease-specific QOL (st. β = –0.35, p < 0.001, partial (p) R ² = 11–12 %), depression (st. β = –0.32 to –0.36, p < 0.001, pR ² = 9–12 %), and anxiety (st. β = –0.21 to –0.40, p < 0.02–0.001, pR ² = 4–15 %) were significantly associated with changes in well-being. Changes in disease-specific QOL were significantly associated with changes in anxiety at 4 months (st. β = 0.21, p = 0.02, pR ² = 4 %), but not with changes in depression.

Conclusions

Changes in disease-specific QOL, depression, and anxiety were associated with changes in well-being. Changes in disease-specific QOL contributed slightly to changes in anxiety, but not to changes in depression. Well-being may capture some aspects of mental QOL in COPD patients better than depression and anxiety.

     

Evaluation of bone mineral density and 25-hydroxyvitamin D levels in subjects with silica exposure

Objective

The purpose of the study was to evaluate the bone mineral density (BMD) and 25-hydroxyvitamin D (25(OH)D) levels in patients with silica exposure.

Materials and methods

The study included 104 male subjects with silica exposure and 36 healthy subjects. Posterior–anterior radiographs were classified according to the International Labour Office (ILO) Classification. Category 0 patients were classified as Group I (n = 54), category I patients were classified as Group II (n = 25), Category II and III patients were classified as Group III (n = 25).

Results

Femoral neck BMD values were significantly lower in Group III (p = 0.007). Lumbar vertebrae BMD values were significantly lower in all groups with silica exposure than in the control group (p = 0.000). The osteoporosis rate was significantly higher in Group III (p = 0.000). Subjects with silica exposure were determined to have diminished 25(OH)D levels (p = 0.012).

Conclusion

The results of this study demonstrated that subjects with silica exposure have diminished BMD and 25(OH)D levels.

     

Associations between daily physical activity,handgrip strength,muscle mass,physical performance and quality of life in prefrail and frail community-dwelling older adults

Purpose

The aim of this study was to examine the associations between daily physical activity (DPA), handgrip strength, appendicular skeletal muscle mass (ASMM) and physical performance (balance, gait speed, chair stands) with quality of life in prefrail and frail community-dwelling older adults.

Methods

Prefrail and frail individuals were included, as determined by SHARE-FI. Quality of life (QoL) was measured with WHOQOL-BREF and WHOQOL-OLD, DPA with PASE, handgrip strength with a dynamometer, ASMM with bioelectrical impedance analysis and physical performance with the SPPB test. Linear regression models adjusted for sex and age were developed: In model 1, the associations between each independent variable and QoL were assessed separately; in model 2, all the independent variables were included simultaneously.

Results

Eighty-three participants with a mean age of 83 (SD: 8) years were analysed. Model 1: DPA (ß = 0.315), handgrip strength (ß = 0.292) and balance (ß = 0.178) were significantly associated with ‘overall QoL’. Balance was related to the QoL domains of ‘physical health’ (ß = 0.371), ‘psychological health’ (ß = 0.236), ‘environment’ (ß = 0.253), ‘autonomy’ (ß = 0.276) and ‘social participation’ (ß = 0.518). Gait speed (ß = 0.381) and chair stands (ß = 0.282) were associated with ‘social participation’ only. ASMM was not related to QoL. Model 2: independent variables explained ‘overall QoL’ (R ² = 0.309), ‘physical health’ (R ² = 0.200), ‘autonomy’ (R ² = 0.247) and ‘social participation’ (R ² = 0.356), among which balance was the strongest indicator.

Conclusion

ASMM did not play a role in the QoL context of the prefrail and frail older adults, whereas balance and DPA were relevant. These parameters were particularly associated with ‘social participation’ and ‘autonomy’.

     

A Pilot Evaluation of the Toxicity of EarthTec® QZ on Invasive (<Emphasis Type="Italic">Bithynia tentaculata</Emphasis>) and Native (<Emphasis Type="Italic">Physa gyrina</Emphasis>) Snail Species from the Upper Mississippi River

We used a comparative approach to investigate the effects of a copper-based pesticide (EarthTec® QZ) on embryos of an invasive snail (Bithynia tentaculata) and a native snail (Physa gyrina). Embryos were exposed to one of three treatments: control (0 mg/L Cu²⁺), low-dose (0.1 mg/L Cu²⁺), or high-dose (0.6 mg/L Cu²⁺), which reflect manufacturer-recommended low and medium 4-day molluscicide treatment concentrations. Exposure to 0.6 mg/L Cu²⁺ over 4 days generated 100% mortality in both invasive and native snail embryos; however, reducing the exposure time from 4 to 1 day resulted in 100% mortality in B. tentaculata but some hatching (7%) in P. gyrina. In contrast, embryos of both species exposed to 0.1 mg/L Cu²⁺ treatment for 4 days showed almost 100% survivorship. Further manipulations of Cu²⁺ concentrations and exposure times may yield regimes that maximize mortality in B. tentaculata while minimizing negative impacts on native species.     

When global rating of change contradicts observed change: Examining appraisal processes underlying paradoxical responses over time

Aims

Interpreting change scores is challenging when patients’ global rating of change (GRC) scores contradict their observed change scores. We examine appraisal processes associated with having GRC-observed change contradictions.

Methods

This secondary analysis of longitudinal multiple sclerosis (MS) registry data examined predictors of GRC scores in the whole sample (n = 858). Logistic modeling then examined predictors of membership in one of two paradoxical subgroups (n = 525): (a) Worsened GRC with unchanged observed Rand-12 Mental Component scores (MCS) (Symptom-Maximizers, n = 171) versus no change GRC among stable MCS subsample; and (b) same GRC with declined observed MCS scores (Symptom-Minimizers, n = 84) versus declining GRC among declining MCS subsample. Independent variables were cognitive appraisal processes from the Quality of Life (QOL) Appraisal Profile.

Results

GRC scores were more strongly associated with appraisal processes than with change in patient-reported outcomes (PROs) (R ² = 11 and 2 %, respectively). Symptom-Maximizers tended to focus on MS-related experiences and emphasize big changes; over time, they decreasingly defined QOL in terms of independence, increasingly focused on their MS, and increasingly compared themselves to doctor’s predictions (Pseudo R ² = 0.20). In contrast, Symptom-Minimizers tended not to recall recent episodes; over time, they focused increasingly on goals related to living situation and emphasized long-term concerns (Pseudo R ² = 0.25).

Conclusions

Appraisal explains more variance in GRC scores than do changes in PROs. People whose GRC assessment contradicts their observed change can be characterized by distinct cognitive appraisal processes reflecting response shift.

     

The dietary form of choline during lactation affects maternal immune function in rats

Purpose

The present study was designed to determine the effects of both choline form and availability on maternal immune function during lactation.

Methods

Sprague–Dawley rats were randomized to one of the three diets 24–48 h before parturition and fed ad libitum until 21 days postnatal: 1 g/kg choline as free choline (C, n = 11), the current form, and amount of choline in commercial diets; 1 g/kg choline as phosphatidylcholine (PC1, n = 11); or 2.5 g/kg choline as PC (PC2.5, n = 8). Choline metabolites in offspring stomach contents were quantified. At 21 days, lymphocytes from mothers’ mesenteric lymph nodes and spleens were isolated and phenotypes and ex vivo cytokine production after mitogen exposure were determined.

Results

There was a higher proportion of choline and a lower proportion of lyso-PC in stomach contents (representing dam’s milk) of C pups compared to PC1. In the mesenteric lymph nodes, feeding PC1 compared to C led to a higher IL-2 production after Concanavalin A (ConA) stimulation and a higher proportion of T cells (CD3+) and a lower proportion of B cells [immunoglobulin (Ig)κ, CD45RA+, and IgM+; P < 0.05]. Splenocytes from the PC1 group produced more IL-6 and TNF-α after lipopolysaccharides stimulation compared to C (P < 0.05). Splenocytes from the PC2.5 group produced more IL-2 and IL-6 after ConA stimulation compared to PC1 (P < 0.05).

Conclusions

Feeding choline as PC in the maternal diet improved the ability of immune cells to respond ex vivo to mitogens and increasing the amount of PC in the diet further improved T cell proliferation.

     

Effects of Ammonia and Density on Filtering of Commensal and Pathogenic <Emphasis Type="Italic">Escherichia coli</Emphasis> by the Cladoceran <Emphasis Type="Italic">Daphnia magna</Emphasis>

Grazing by cladocerans can reduce the survival of enteric bacteria associated with fecal pollution. This study examined the potential of Daphnia magna to filter commensal and pathogenic Escherichia coli of human origin. Grazing on commensal and pathogenic bacteria was comparable, but slightly greater at 20 compared to 15 and 25°C. Filtering activity was strongly dependent on D. magna and E. coli densities at environmentally relevant bacterial concentrations. Maximum feeding rates were >10⁷ cells h^?1 daphnid^?1, clearance rates were 1–6 mL h^?1 daphnid^?1, and filtering was independent of bacterial cell sizes between 0.7 and 1.8 µm. Filtering and ingestion of E. coli by D. magna was susceptible to acute inhibition by unionized ammonia with a 24 h EC50 of 0.18 mg L^?1 NH₃–N, and a LOEC of 0.09 mg L^?1 NH₃–N. The study indicated that biological and chemical constraints should be considered when applying Daphnia for attenuation of fecal pollution.     

Iodine nutrition and thyroid nodules among children and adolescents in a coastal area of China

Aim

This study aims to assess iodine nutritional status and investigate the prevalence of thyroid nodules in children and adolescents in Ningbo city, China.

Subject and methods

A cross-sectional survey was conducted in Ningbo, China, in 2011. Salt iodine, urine iodine concentration (UIC) and thyroid nodules (by ultrasonography) were measured in 329 participants aged 6–17 years.

Results

The median UIC of all participants was 167.23 μg/L. No significant differences in UICs were observed between boys and girls (Z?=??1.06, P?=?0.29), children and adolescents (Z?=??1.88, P?=?0.06), iodized salt users and noniodized salt users (Z?=??0.10, P?=?0.92). A total of 114 nodules with maximum diameters between 1.5 and 12 mm were found among 51 (15.50 %) participants, the prevalence of thyroid nodules between children and adolescents has no significant difference (χ ²?=?0.29, P?=?0.59), and there were no significant differences in age (t?=?1.56, P?=?0.12), gender (χ ²?=?0.13, P?=?0.72), type of salt (χ ²?=?0.14, P?=?0.71), family history of thyroid diseases (P?=?0.46, Fisher’s exact test) and UICs (Z?=??1.12, P?=?0.26) between the participants with thyroid nodules and those without.

Conclusion

The iodine nutrition was adequate in children and adolescents in Ningbo city, but the prevalence of thyroid nodules among children and adolescents was high.

     

Affective disorders and Health-Related Quality of Life (HRQoL) in adolescents and young adults with Multiple Sclerosis (MS): the moderating role of resilience

Purpose

To investigate the moderating role of resilience in the relationship between affective disorders and Health-Related Quality of Life (HRQoL) for adolescents and young adults with multiple sclerosis (MS).

Methods

A quantitative methodology was adopted. Fifty-three adolescents and young adults were interviewed to assess resilience as a personality trait (Ego-Resiliency Scale) and resilience as an interactive competence (CYRM-28), Health-Related Quality of Life (PedsQL 4.0), depression and anxiety (BDI-II and STAI-Y).

Results

Affective disorders, both depression (β = ?.38, p < .001) and anxiety (State β = –.35, p < .001; Trait β = ?.41, p < .001), were negatively associated with HRQoL. Data also showed that the resilience competencies using Individual (β = .22, p < .001) and relational resources (β = .12, p < .05) are significantly associated HRQoL. According to the regression analyses, we tested the moderating role of resilience competence using individual resources on the relationship between the Depression Cognitive Factor and Emotional Functioning. Data show that in step 2 of the regression analysis, we obtained a variation of β = ?.45 (p < .001) to β = ?.30 (p < .001) in the dimension for the Depression Cognitive Factor. The Sobel test showed that the moderating effect of resilience was significant regarding the increase in R² (p < .01).

Conclusions

Resilience competence using individual resources moderates the relationship between the Depression Cognitive Factor and Emotional Functioning in adolescents with MS. Our study suggests that to improve well-being for adolescents with MS resilience could play a key role.

     

Impact of a community-based lifestyle intervention program on health-related quality of life

Background

The presence of risk factors for type 2 diabetes and cardiovascular disease, or the conditions themselves, contributes to lower health-related quality of life (HRQoL) among adults. Although community-based lifestyle intervention programs have been shown to be effective for improving risk factors for these diseases, the impact of these interventions on HRQoL has rarely been described.

Purpose

To examine changes in HRQoL following participation in the Group Lifestyle Balance program, a community translation of the Diabetes Prevention Program lifestyle intervention for adults with prediabetes and/or the metabolic syndrome.

Methods

Participants enrolled in the 12-month, 22-session intervention program (N = 223) completed the EuroQol Health Questionnaire (EQ-5D-3L) at baseline, 6, and 12 months. Linear mixed-effects regression models determined change in EQ-5D-visual analog scale (VAS) and Index scores post-intervention.

Results

Mean EQ-5D-VAS was improved by +7.38 (SE = 1.03) at 6 months and by +6.73 (SE = 1.06) at 12 months post-intervention (both; p < 0.0001). Mean changes in EQ-5D index values were +0.00 (SE = 0.01; NS) and +0.01 (SE = 0.01; p < 0.05), respectively. Adjusted for age, baseline score, and achieving intervention goals, mean change in EQ-5D-VAS was +11.83 (SE = 1.61) at 6 months and +11.23 (SE = 1.54) at 12 months (both; p < 0.0001). Adjusted mean change in EQ-5D index value was +0.04 (SE = 0.01) at 6 months and +0.05 (SE = 0.01) at 12 months (both; p < 0.01).

Conclusion

Participation in a community lifestyle intervention program resulted in improved HRQoL among adults with prediabetes and/or the metabolic syndrome. These benefits to HRQoL, together with improved clinical and behavioral outcomes, should increase the appeal of such programs for improving health.

     

Effect of increased water intake on plasma copeptin in healthy adults

Purpose

Inter-individual variation in median plasma copeptin is associated with incident type 2 diabetes mellitus, progression of chronic kidney disease, and cardiovascular events. In this study, we examined whether 24-h urine osmolality was associated with plasma copeptin and whether increasing daily water intake could impact circulating plasma copeptin.

Methods

This trial was a prospective study conducted at a single investigating center. Eighty-two healthy adults (age 23.6 ± 2.9 years, BMI 22.2 ± 1.5 kg/m², 50% female) were stratified based upon habitual daily fluid intake volumes: arm A (50–80% of EFSA dietary reference values), arm B (81–120%), and arm C (121–200%). Following a baseline visit, arms A and B increased their water intake to match arm C for a period of 6 consecutive weeks.

Results

At baseline, plasma copeptin was positively and significantly associated with 24-h urine osmolality (p = 0.002) and 24-h urine specific gravity (p = 0.003) but not with plasma osmolality (p = 0.18), 24-h urine creatinine (p = 0.09), and total fluid intake (p = 0.52). Over the 6-week follow-up, copeptin decreased significantly from 5.18 (3.3;7.4) to 3.90 (2.7;5.7) pmol/L (p = 0.012), while urine osmolality and urine specific gravity decreased from 591 ± 206 to 364 ± 117 mOsm/kg (p < 0.001) and from 1.016 ± 0.005 to 1.010 ± 0.004 (p < 0.001), respectively.

Conclusions

At baseline, circulating levels of copeptin were positively associated with 24-h urine concentration in healthy young subjects with various fluid intakes. Moreover, this study shows, for the first time, that increased water intake over 6 weeks results in an attenuation of circulating copeptin.

Clinical Trial Registration Number

NCT02044679.

     

Growth Study and Hydrocarbonoclastic Potential of Microorganisms Isolated from Aviation Fuel Spill Site in Ibeno,Nigeria

The growth study and hydrocarbonoclastic potential of microorganisms isolated from aviation fuel spill sites at Inua-eyet Ikot in Ibeno, Nigeria were examined using standard microbiological methods. The results of the analysis revealed that the viable plate count of microorganisms in the polluted soil ranged from 2.2 ± 0.04 × 10³ to 3.4 ± 0.14 × 10⁶ cfu/g for bacteria and 1.4 ± 0.5 × 10² to 2.3 ± 0.4 × 10⁴ cfu/g for fungi while count of biodegraders ranged from 1.2 ± 0.4 × 10³ to 2.1 ± 0.8 × 10⁵ cfu/g. A total of 11 microbial isolates comprising of Micrococcus, Klebsiella, Flavobacterium, Bacillus, Pseudomonas, Candida, Aspergillus, Cladosporium, Penicillium, Saccharomyces and Fusarium were characterized. The ability of the selected isolates to utilize the pollutant (aviation fuel) as their sole source of carbon and energy was examined and noticed to vary in growth profiles between the isolates. The results of their degradability after 28 days of incubation shows that species of Cladosporium, Pseudomonas, Candida, Bacillus, Micrococcus and Penicillium were the most efficient Aviation fuel degraders with percentage weight loss of 86.2, 78.4, 78, 56, 53 and 50.6 respectively. Flavobacterium, Saccharomyces and Aspergillus exhibited moderate growth with percentage weight loss of 48, 45.8 and 43.4 respectively while Klebsiella and Fusarium species showed minimal growth with percentage weight loss of 20 and 18.5 respectively. The results imply that the most efficient biodegraders like Cladosporium, Pseudomonas, Candida, Bacillus and Microoccus could tolerate and remove aviation fuel from the environment.     

Relationships between hydration biomarkers and total fluid intake in pregnant and lactating women

Introduction

Previous research established significant relationships between total fluid intake (TFI) and urinary biomarkers of the hydration process in free-living males and females; however, the nature of this relationship is not known for pregnant (PREG) and lactating (LACT) women.

Purpose

To determine the relationship between urinary and hematological hydration biomarkers with TFI in PREG and LACT.

Methods

Eighteen PREG/LACT (age: 31 ± 3 years, pre-pregnancy BMI: 24.26 ± 5.85 kg m^?2) collected 24-h urine samples, recorded TFI, and provided a blood sample at 5 time points (15 ± 2, 26 ± 1, 37 ± 1 weeks gestation, 3 ± 1 and 9 ± 1 weeks postpartum during lactation); 18 pair-matched non-pregnant (NP), non-lactating (NL) women (age: 29 ± 4 years, BMI: 24.1 ± 3.7 kg m^?2) provided samples at similar time intervals. Twenty-four-hour urine volume (U _VOL), osmolality (U _OSM), specific gravity (U _SG), and color (U _COL) were measured. Hematocrit, serum osmolality (S _OSM), and serum total protein (S _TP) were measured in blood.

Results

Significant relationships were present between TFI and urinary biomarkers in all women (P < 0.004); these relationships were not different between PREG and NP, and LACT and NL, except U _VOL in PREG (P = 0.0017). No significant relationships between TFI and hematological biomarkers existed (P > 0.05).

Conclusion

Urinary biomarkers of hydration, but not hematological biomarkers, have a strong relationship with TFI in PREG, LACT, NP, and NL women. These data suggest that urinary biomarkers of hydration reflect TFI during pregnancy and breast-feeding.

     

Indication of Risk of Mother-to-Child <Emphasis Type="Italic">Toxoplasma gondii</Emphasis> Transmission in the Greater Accra Region of Ghana

Objectives Congenital infection with Toxoplasma gondii is known to result in neurological and brain disorders including ophthalmic disorders later in life. Research in Ghana revealed high sero-prevalence among pregnant women and eye patients. This study determines the risk of congenital transmission of T. gondii infection in Accra, Ghana. Methods One hundred consented pregnant women aged 18–45 years (mean 29.85 ± 5.76) participated. Venous blood and tissue samples were taken from the maternal side of each placenta after delivery. Cord blood samples were also taken after they were separated from the infants. Finger-prick blood was taken from infants of participating women at 2 or 6 weeks post-natal. ELISA was used to detect T. gondii antibodies in all blood samples while Nested-PCR was used to detect T. gondii DNA from placental tissues. Data was analysed using SPSS v. 16. Results Overall, 37.6 % of maternal blood, 39.5 % of umbilical cord blood, and 57.5 % of post-natal infant blood were positive for anti-T. gondii IgG. No anti-T. gondii IgM was detected in any of those samples. Toxoplasma gondii DNA was detected in 39.8 % of placental tissue samples. Strong association was observed in the occurrence of placental T. gondii DNA and anti-T. gondii IgG positive women (ø = 0.810, p < 0.00001) as well as high Relative risk shown in the likelihood of foetal exposure to infection in latently-infected women (RR 10.39; CI 4.47–24.17; p < 0.00001). Conclusions for Practice The presence of anti-T. gondii IgG antibodies only, and T. gondii DNA in placental tissues indicate the women might have been infected early during the pregnancy, placing about 39.8 % of the babies at risk. These results can strongly influence policy to screen and treat pregnant women for T. gondii infection.