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Background Subacute ruminal acidosis (SARA) is characterized by a ruminal pH depression, and microbiota can also be affected by a higher acidity and/or dietary changes. Previous studies have revealed similar patterns in pH reduction in the rumen and reticulum, whereas changes in reticular pH and bacterial community following a high-grain diet are not fully understood. The aim of this study was to investigate the changes in reticular pH and bacterial community structure following a high-grain diet simultaneously with those in the rumen. Results SARA was diagnosed when ruminal and reticular pH remained under 5.6 for 350 ± 14 and 312 ± 24 min/d, respectively, on the last day of the CON period. During the CON period, lower proportion of acetic acid and higher proportion of butyric acid were observed compared with the HAY period. The proportions of acetic acid and propionic acid were lower and higher, respectively, in the rumen compared with the reticulum. From 454 pyrosequencing analysis, the relative abundance of several genera differed significantly between the two periods and the two locations. During the HAY period, higher relative abundances of Prevotella, Eubacterium, Oscillibacter, and Succiniclasticum and lower relative abundances of Ruminococcus, Clostridium, and Olsenella were identified compared with the CON period. Furthermore, the relative abundance of Eubacterium was lower in the rumen compared with the reticulum. Bacterial diversity indices were significantly different between the HAY and CON periods, being higher in the HAY period. The quantitative real-time PCR showed that the copy numbers of several cellulolytic bacteria (Fibrobacter succinogenes and Ruminococcus albus) were higher during the HAY period. Conclusion A high-grain diet showed similar impacts on the pH, fermentation, and bacterial community structure in the rumen and reticulum. During the CON period, ruminal and reticular pH decreased following the high-grain challenge, and lower bacterial diversity and changes in the bacterial composition, similarity, and bacterial copy numbers were observed due to a higher acidity and dietary changes compared with the HAY period. These changes may influence the fermentative ability of the rumen and reticulum. Electronic supplementary material The online version of this article (10.1186/s12917-018-1637-3) contains supplementary material, which is available to authorized users.

We investigated the effect of repeated subacute ruminal acidosis (SARA) challenges on the pH, fermentative function, and bacterial community in the rumen. Four rumen-cannulated Holstein bulls were fed a high-forage diet for 7 d (HF period) followed by a high-grain diet for 7 d (HG period). Four SARA challenges were carried out consecutively (first, second, third, and fourth challenges). The ruminal pH was measured continuously during the experiment, and rumen fluid samples during the first to fourth challenges were collected at 0800, 1400, and 2000 h on the last days of each feeding period for analysis; volatile fatty acid components, NH3-N, and lactic acid concentrations were measured. Bacterial community structure was analyzed at 0800 h during the first and fourth challenges on the last days of each period. The 24-h mean ruminal pH was decreased during the transition from high-forage to high-grain diet and tended to differ between the HF and HG periods. During the HG period, ruminal pH

Clobazam (CLB) is a 1,5-benzodiazepine with antiepileptic properties. More than 70% of administered CLB is dealkylated to yield N-desmethylclobazam (N-CLB), a pharmacologically active metabolite, by cytochrome P450 (CYP) 3A4 and CYP2C19. The subsequent inactivation of N-CLB is primarily catalyzed by CYP2C19. Meanwhile, P450 oxidoreductase (POR) is the obligatory electron donor to all microsomal CYP enzymes. The aim of this study was to evaluate the impact of the CYP2C19 and POR genotypes on the pharmacokinetic parameters of CLB and N-CLB.This retrospective study included 85 Japanese patients with epilepsy who were treated with CLB. CYP2C19*2, *3, and P450 oxidoreductase (POR) *28 (rs1057868CT) polymorphisms were evaluated. A total of 128 steady-state concentrations for both CLB and N-CLB were collected from the patients. A nonlinear mixed-effects model identified the pharmacokinetics of CLB and N-CLB; the covariates included CYP2C19 and POR genotypes, weight, gender, daily CLB dose, and coadministered antiepileptic drugs.Among the 85 patients, the allele frequencies of CYP2C19*2, CYP2C19*3, and POR*28 were 27.6%, 12.9%, and 41.2%, respectively. A one-compartment model with first-order absorption and/or elimination showed that the clearance of CLB and N-CLB was significantly lower by 18.1% and 84.9%, respectively, in the CYP2C19 poor metabolizers compared with the homozygous extensive metabolizers. The CLB clearance was 44% higher in subjects homozygous for the POR*28 T allele than in those homozygous for the POR*28 C allele, although the genotypes did not affect the N-CLB clearance. The concomitant use of phenobarbital, phenytoin, and zonisamide significantly affected the CLB clearance, whereas that of carbamazepine, phenytoin, and valproic acid affected the N-CLB clearance. The weight also significantly influenced the CLB clearance and volume of distribution of both CLB and N-CLB.Our results showed that the CYP2C19 and/or POR genotypes have an impact on the CLB and/or N-CLB clearance. These results suggest that determining the CYP2C19 and/or POR genotypes is helpful for obtaining appropriate serum CLB and N-CLB concentrations and preventing an overdose when starting CLB therapy.

Background: Skin surface colonization starts after birth. It is thought that early microbial colonization affects the development of skin immune functions. Although Malassezia is the predominant fungus in the skin microbiota in healthy individuals, the microorganism is associated with atopic dermatitis and seborrheic dermatitis. In the present study, transmission of skin microbiota from mothers to their neonates was elucidated using the Malassezia microbiota as an indicator. Methods: Temporal changes in the level of Malassezia colonization of the skin from 27 neonates and mothers were investigated by real-time polymerase chain reaction assay. The genotypes of Malassezia colonizing the neonate and mother were also determined. Results: Malassezia was detected from 89% and 100% of neonate samples on days 0 and 1 after birth, respectively. Subsequently, the level of Malassezia colonization of the neonates increased with time, whereas that of the mothers did not change. The Malassezia diversity of neonates shifted to the adult type by day 30. The genotype of Malassezia colonizing the skin of neonates agreed well with that of Malassezia colonizing the skin of the mothers. Conclusion: Fungal microbiota colonization of neonates began on day 0, and the fungal microbiota of neonates had changed to the adult type by day 30. To our knowledge, this is the first report of a molecular analysis of the fungal microbiota of neonates.

Background: Clobazam-induced adverse reactions have been reported in cases with CYP2C19 defective allele(s). However, the relevance of the CYP2C19 genotypes to clobazam therapy remains to be clarified. Methods: The association between CYP2C19 genotypes and the antiepileptic and adverse effects of clobazam was retrospectively investigated in 110 Japanese subjects, in relation to clobazam and N-desmethylclobazam (N-clobazam) concentrations. Results: There were 41 (37.3%) homozygous extensive metabolizers (EMs), 44 (40.0%) heterozygous EMs, and 25 (22.7%) poor metabolizers (PMs). The response rate was significantly greater in PMs and heterozygous EMs than homozygous EMs with a gene–dose effect (65.2, 47.6 and 33.3%, respectively), and the adjusted odds ratio (95% CI) of PM versus homozygous EMs was 9.88 (2.47–39.56; p = 0.001). However, the genotypes did not affect the development of tolerance or adverse reactions, although the incidence of some adverse symptoms was insignificantly higher in PMs. The N-clobazam concentration (µg/ml) increased with the number of CYP2C19-defective alleles (0.92 ± 0.61, 2.14 ± 1.69 and 7.70 ± 6.04, respectively; p

Glutathione S-transferases protect cells against exogenous and endogenous oxidative stress. Type 2 diabetes is associated with an increased production of reactive oxygen species and a reduction in antioxidant defenses. This study investigated whether GSTA1*A/*B and GSTP1 Ile105Val polymorphisms could affect the risk for type 2 diabetes. A cross-sectional case-control analysis included 468 (326 men and 142 women) Japanese participants in a health screening program. The prevalence of type 2 diabetes was 11.3% (63 subjects: 52 male and 11 female). The frequency of GSTA1*B allele carriers was higher in diabetes than in non-diabetes, though the difference was not statistically significant (adjusted OR, 1.8; 95% CI, 0.9–3.4). The risk among the GSTA1*B allele carriers was significantly increased by current-smoking status (adjusted OR, 3.7; 95% CI, 1.1–12.7; vs. never-smoking non-carriers), whereas the smoking status was not an independent risk factor. The GSTP1 genotype alone or in combination with the smoking status did not affect the risk for diabetes. This is the first report to show that the GSTA1*B allele is a potential risk factor for smoking-related type 2 diabetes.

Skin surface colonization starts after birth. It is thought that early microbial colonization affects the development of skin immune functions. Although Malassezia is the predominant fungus in the skin microbiota in healthy individuals, the microorganism is associated with atopic dermatitis and seborrheic dermatitis. In the present study, transmission of skin microbiota from mothers to their neonates was elucidated using the Malassezia microbiota as an indicator.Temporal changes in the level of Malassezia colonization of the skin from 27 neonates and mothers were investigated by real-time polymerase chain reaction assay. The genotypes of Malassezia colonizing the neonate and mother were also determined.Malassezia was detected from 89% and 100% of neonate samples on days 0 and 1 after birth, respectively. Subsequently, the level of Malassezia colonization of the neonates increased with time, whereas that of the mothers did not change. The Malassezia diversity of neonates shifted to the adult type by day 30. The genotype of Malassezia colonizing the skin of neonates agreed well with that of Malassezia colonizing the skin of the mothers.Fungal microbiota colonization of neonates began on day 0, and the fungal microbiota of neonates had changed to the adult type by day 30. To our knowledge, this is the first report of a molecular analysis of the fungal microbiota of neonates.

A 65-year-old woman presenting with multiple autoimmune disorders including incomplete CREST overlapping with aquaporin 4 (AQP4) antibody-positive recurrent myelitis was reported. She also clinically suffered from Sjogren syndrome and primary biliary cirrhosis (PBC). She had dysesthesia below C4 level, mild motor weakness and hyperreflexia without pathological reflexes on bilateral lower extremities. A T2-weighted MRI indicated multiple discontinuous spinal cord lesions at C1-5 and T7/8. A visual evoked potential study disclosed bilateral prolonged latency of P100. She clinically manifested not only incomplete CREST syndrome (facial teleangiectasia, sclerodactyly in bilateral fingers, and Raynaud's phenomenon), but also Sjogren (sicca syndrome) and PBC (jaundice). Immunoserological study showed that she was positive for anti-nuclear, anti-centromere, and anti-AQP4 (= NMO-IgG) antibodies. A combination therapy with corticosteroid and plasmapheresis was effective for all clinical symptoms. Therefore, this case stresses on the relevance of anti-AQP 4 antibody to the other overlapping autoimmune disorders, such as CREST syndrome, when recurrent myelitis is clinically diagnosed.

There are no reports of surgical treatment for non-functioning pituitary adenomas in the 9th decade of life, and it is thought that these patients often select conservative treatment and observation, because of their worry about deterioration of their general condition due to invasive surgery and because hypopituitarism and other medical problems are often present. However, it is also true that there is necessity for considering surgical treatment for the pituitary adenomas even in the 9th decade when there is a complaint of visual disturbance. We carried out the palliative surgical removal of three non-functioning pituitary adenomas with visual disturbance in the 9th decade and report these surgical treatments and outcomes. The improvement of visual disturbance was obtained in all three cases. The only perioperative complication was pneumothorax caused by barotrauma. The palliative transsphenoidal surgical removal of non-functioning pituitary adenomas for the purpose of improvement of visual disturbance is a safe procedure in the 9th decade of life.

A 45-year-old man was admitted to our hospital because of bone pain and hypophosphatemia. He had undergone surgery 2 years previously for a "benign unclassified mesenchymal tumor" in the skull, but there were no clinical symptoms related to osteomalacia. His laboratory examination revealed low serum phosphate, high alkaline phosphatase, and normal calcium levels. The diagnosis of tumor-induced osteomalacia due to phosphaturic mesenchymal tumor mixed connective tissue variant (PMTMCT) was made by re-examining the pathologic specimens. Oral supplementation with phosphate and 1-25-dihydroxyvitamin D relieved his clinical symptoms and laboratory values returned to normal. However, subcutaneous administration of octreotide had no clinical effect. Clinicians and pathologists should be aware of the existence of PMTMCT especially nonphosphaturic or asymptomatic variants of this disorder.