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Lipid extracted algae (LEA) is an attractive feedstock for alcohol fuel production as it is a non-food crop which is largely composed of readily fermented carbohydrates like starch rather than the more recalcitrant lignocellulosic materials currently under intense development. This study compares the suitability of ionic liquid extracted algae (ILEA) and hexane extracted algae (HEA) for acetone, butanol, and ethanol (ABE) fermentation. The highest butanol titers (8.05 g L(-1)) were achieved with the fermentation of the acid hydrolysates of HEA, however, they required detoxification to support product formation after acid hydrolysis while ILEA did not. Direct ABE fermentation of ILEA and HEA (without detoxification) starches resulted in a butanol titer of 4.99 and 6.63 g L(-1), respectively, which significantly simplified the LEA to butanol process. The study demonstrated the compatibility of producing biodiesel and butanol from a single feedstock which may help reduce the feedstock costs of each individual process., (Copyright © 2016 Elsevier Ltd. All rights reserved.)

Ionic liquid (ILs) pretreatment of lignocellulosic biomass has attracted broad scientific interest, despite high costs, possible toxicity and energy intensive recycling. An alternative group of ionic solvents with similar physicochemical properties are deep eutectic solvents (DESs). Corncob residues were pretreated with three different DES systems: choline chloride and glycerol, choline chloride and imidazole, choline chloride and urea. The pretreated biomass was characterised in terms of lignin content, sugars concentration, enzymatic digestibility and crystallinity index. A reduction of lignin and hemicellulose content resulted in increased crystallinity of the pretreated biomass while the crystallinity of the cellulose fraction could be reduced, depending on DES system and operating conditions. The subsequent enzymatic saccharification was enhanced in terms of rate and extent. A total of 41 g fermentable sugars (27 g glucose and 14 g xylose) could be recovered from 100g corncob, representing 76% (86% and 63%) of the initially available carbohydrates., (Copyright © 2015 Elsevier Ltd. All rights reserved.)

This is a report on a seminar held on January 12, 2013, at the Regional Dermatology Training Centre in Tanzania, sponsored by the International Society of Dermatology as part of its Taskforce Program for Skin Care for All: Community Dermatology. There were four themes: (i) Gardens attached to health centers increase their attractiveness and result in increased attendance and, thus, increase the utilization of effective skin care interventions. Literature on the positive effect of greenery surrounding health centers on health and the environment is reviewed. (ii) Adding an expert on agriculture to the staff of health centers in Rwanda has provided nutrition and safe medicines. (iii) In southern India, these interventions are channeled through the empowerment of tribal women in an area noted for anxiety due to unemployment in the tea and forestry industry. The gardens are used for teaching about nutrition and herbal medicines, and the women are further attracted by childcare facilities. (iv) Measuring barrier function defects gives early warning of malnutrition of the skin after damage by trauma or by ultraviolet radiation. Higher cost research techniques may help to provide the science required to produce its evidence base. In conclusion, Gardens for health should be adopted as policy by skin care providers., (© 2014 The International Society of Dermatology.)

In light of unrestricted use of first-generation penicillins, these antibiotics are now superseded by their semisynthetic counterparts for augmented antibiosis. Traditional penicillin chemistry involves the use of hazardous chemicals and harsh reaction conditions for the production of semisynthetic derivatives and, therefore, is being displaced by the biosynthetic platform using enzymatic transformations. Penicillin G acylase (PGA) is one of the most relevant and widely used biocatalysts for the industrial production of β-lactam semisynthetic antibiotics. Accordingly, considerable genetic and biochemical engineering strategies have been devoted towards PGA applications. This article provides a state-of-the-art review in recent biotechnological advances associated with PGA, particularly in the production technologies with an emphasis on using the Escherichia coli expression platform., (Copyright © 2013 Elsevier Inc. All rights reserved.)

In several vertebrate species, the effects of estrogens on male aggressive behavior can be modulated by environmental cues. In song sparrows and rodents, estrogens modulate aggression in the nonbreeding season or winter-like short days, respectively. The behavioral effects of estrogens are rapid, which generally is considered indicative of nongenomic processes. The current study further examined the hypothesis that estradiol acts nongenomically under short days by utilizing a protein synthesis inhibitor, cycloheximide (CX). Mice were housed in either short or long day photoperiods, and treated with an aromatase inhibitor. One hour before resident-intruder testing mice were injected with either CX or saline vehicle, and 30 min later were treated orally with either cyclodextrin conjugated estradiol or vehicle. Under short days, mice treated with estradiol showed a rapid decrease in aggressive behavior, independent of CX administration. CX alone had no effect on aggression. These results show that protein synthesis is not required for the rapid effects of estradiol on aggression, strongly suggesting that these effects are mediated by nongenomic processes. We also showed that estradiol suppressed c-fos immunoreactivity in the caudal bed nucleus of the stria terminalis under short days. No effects of estradiol on behavior or c-fos expression were observed in mice housed under long days. Previously we had also demonstrated that cage bedding influenced the directional effects of estrogens on aggression. Here, we show that the phenomenon of rapid action of estradiol on aggression under short days is a robust result that generalizes to different bedding conditions., (Copyright © 2013 Elsevier Inc. All rights reserved.)

Compared to traditional chromatography using resins in packed-bed columns, membrane chromatography is a relatively new and immature bioseparation technology based on the integration of membrane filtration and liquid chromatography into a single-stage operation. Over the past decades, advances in membrane chemistry have yielded novel membrane devices with high binding capacities and improved mass transfer properties, significantly increasing the bioprocessing efficiency for purification of biomolecules. Due to the disposable nature, low buffer consumption, and reduced equipment costs, membrane chromatography can significantly reduce downstream bioprocessing costs. In this review, we discuss technological merits and disadvantages associated with membrane chromatography as well as recent bioseparation applications with a particular attention on purification of large biomolecules., (Copyright © 2013 Elsevier Inc. All rights reserved.)

An integrated bioprocess for effective production and purification of penicillin G acylase (PAC) was developed. PAC was overexpressed in a genetically engineered Escherichia coli strain, secreted into the cultivation medium, harvested, and purified in a single step by anion-exchange chromatography. The cultivation medium developed in this study had a sufficiently low conductivity to allow direct application of the extracellular fraction to the anion-exchange chromatography column while providing all of the required nutrients for sustaining cell growth and PAC overexpression. It was contrived with the purposes of (i) providing sufficient osmolarity and buffering capacity, (ii) minimizing ionic species to facilitate the binding of extracellular proteins to anion-exchange media, and (iii) enhancing PAC expression level and secretion efficiency. Employing this medium recipe the specific PAC activity reached a high level at 871 U/g DCW, of which more than 90% was localized in the extracellular medium. In addition, the osmotic pressure and induction conditions were found to be critical for optimal culture performance. The formation of inclusion bodies associated with PAC overexpression tended to arrest cell growth, leading to potential cell lysis. Clarified culture medium was applied to a strong anion-exchange (Q) column and PAC was purified by non-retentive separation, where most contaminant proteins bound to the chromatographic media with PAC being collected as the major component in the flow-through fraction. After removing the contaminant oligopeptides using ultrafiltration, purified PAC with a specific activity of 16.3 U/mg was obtained and the overall purification factor for this one-step downstream purification process was up to 3 fold., (Copyright © 2012 Elsevier B.V. All rights reserved.)

Downstream purification often represents the most cost-intensive step in the manufacturing of recombinant proteins since conventional purification processes are lengthy, technically complicated, and time-consuming. To address this issue, herein we demonstrated the simultaneous clarification and purification of the extracellularly produced recombinant protein by Escherichia coli using an integrated system of tangential flow filtration and anion exchange membrane chromatography (TFF-AEMC). After cultivation in a bench-top bioreactor with 1L working volume using the developed host/vector system for high-level expression and effective secretion of recombinant penicillin G acylase (PAC), the whole culture broth was applied directly to the established system. One-step purification of recombinant PAC was achieved based on the dual nature of membrane chromatography (i.e. microfiltration-sized pores and anion-exchange chemistry) and cross-flow operations. Most contaminant proteins in the extracellular medium were captured by the anion-exchange membrane and cells remained in the retentate, whereas extracellular PAC was purified and collected in the filtrate. The batch time for both cultivation and purification was less than 24h and recombinant PAC with high purity (19 U/mg), yield (72% recovery), and productivity (41 mg of purified PAC per liter of culture) was obtained. Due to the nature of the non-selective protein secretion system and the versatility of ion-exchange membrane chromatography, the developed system can be widely applied for effective production and purification of recombinant proteins., (Copyright © 2012 Elsevier B.V. All rights reserved.)

Most existing genomic engineering protocols for manipulation of Escherichia coli are primarily focused on chromosomal gene knockout. In this study, a simple but systematic chromosomal gene knock-in method was proposed based on a previously developed protocol using bacteriophage λ (λ Red) and flippase-flippase recognition targets (FLP-FRT) recombinations. For demonstration purposes, DNA operons containing heterologous genes (i.e., pac encoding E. coli penicillin acylase and palB2 encoding Pseudozyma antarctica lipase B mutant) engineered with regulatory elements, such as strong/inducible promoters (i.e., P( trc ) and P( araB )), operators, and ribosomal binding sites, were integrated into the E. coli genome at designated locations (i.e., lacZYA, dbpA, and lacI-mhpR loci) either as a gene replacement or gene insertion using various antibiotic selection markers (i.e., kanamycin and chloramphenicol) under various genetic backgrounds (i.e., HB101 and DH5α). The expression of the inserted foreign genes was subjected to regulation using appropriate inducers [isopropyl β-D: -1-thiogalactopyranoside (IPTG) and arabinose] at tunable concentrations. The developed approach not only enables more extensive genomic engineering of E. coli, but also paves an effective way to "tailor" plasmid-free E. coli strains with desired genotypes suitable for various biotechnological applications, such as biomanufacturing and metabolic engineering.

Objective: To evaluate an "information aid" for women with a family history of breast cancer., Design: Before-after descriptive study., Setting: Family practices in Ontario., Participants: Of 405 randomly selected Ontario physician members of the College of Family Physician's of Canada's National Research System, 97 agreed to participate and to recruit three consecutive female patients with any family history of breast cancer., Interventions: Patients completed a baseline questionnaire and, after reviewing the information aid, a satisfaction questionnaire. Four weeks later, they completed a third questionnaire., Main Outcome Measures: Patient satisfaction, knowledge, worries related to breast cancer, risk perception, and attitudes toward screening., Results: Of 203 patients recruited, 160 (79%) completed all three questionnaires. The information aid was rated excellent or very good by 91% of the women; 99% would recommend it to other women. Knowledge improved significantly; worry about breast cancer did not increase., Conclusion: The information aid is a useful resource for women and primary care physicians and could facilitate appropriate risk assessment and management of women with a family history of breast cancer.

During the past decade in North America, the number of self-help groups for cancer patients has grown dramatically. Nurses' knowledge and attitudes about self-help groups could influence their practice behaviours and the information they provide to cancer patients. However, little is known about oncology nurses' views regarding self-help groups. This study used a cross-sectional survey to gather information about knowledge, attitudes, and practice behaviours of Canadian oncology nurses regarding self-help groups. A total of 676 nurses completed the survey (response rate of 61.3%). The respondents had spent, on average, 21.6 years in nursing and 11.6 years in oncology nursing. Results indicated that a large majority of nurses knew about available self-help groups. Approximately one-fifth of the nurses are speaking frequently about self-help groups with patients (20.7%) and are initiating the conversation on a frequent basis (22.0%). Overall, oncology nurses rated self-help groups as helpful with regards to sharing common experiences (79.5%), sharing information (75.6%), bonding (74.0%), and feeling understood (72.0%). The most frequently identified concern regarding the groups was about misinformation being shared (37.9%), negative effects of associating with the very ill (22.1%), and promoting unconventional therapies (21.2%). Implications from the study suggest that oncology nurses would benefit from learning more about the nature of self-help groups and being able to talk with patients about the self-help experience.

Background: Members of self-help groups (SHGs) for support of cancer patients are concerned that physicians are skeptical about these groups and see them as potentially harmful. The purpose of this study was to assess family physicians' attitudes towards self-help groups and see whether these could be changed through an educational intervention., Methods: A questionnaire assessing attitudes toward SHGs was mailed to 1,422 eligible Ontario family physicians, to which 911 responded (64% response rate). Responders were sent an educational package consisting of an article about self-help groups, a list of local cancer self-help groups, and a follow-up questionnaire., Results: The study was completed by 584/911 family physicians (64%). After being exposed to educational material, the physicians were more positive about the helpfulness of SHGs (p = 0.021), and less concerned about SHGs' being harmful (p = 0.003). They were more positive about the potential for SHGs to provide participants with opportunities for: sharing information (p = 0.004), bonding with other patients (p < 0.001), feeling understood (p = 0.004), sharing common experiences (p = 0.004), providing hope (p < 0.001), sharing laughter (p = 0.001), becoming more assertive (p < 0.001), communicating with health professionals (p = 0.04), dealing with issues related to death and dying (p = 0.005), advocacy (p = 0.01), and overcoming isolation (p = 0.002). They were less concerned with the potential for SHGs to provide misinformation (p = 0.003), the negative effects of associating with the very ill (p = 0.002), dwelling on illness (p = 0.002), or cultivating false hope (p = 0.001)., Conclusion: Having family physicians complete a questionnaire, followed by educational material specific to their concerns, changed their attitudes toward self-help groups. Further study is needed to see whether behavioral changes resulted.

A sample of family physicians was randomly selected from the membership database of the College of Family Physicians of Canada (CFPC). Potential respondents were mailed a survey questionnaire, and a modified Dillman approach was utilized. A total of 964 completed questionnaires were received, providing a response rate of 50.1%. Although most family physicians were aware of many basic facts about prostate cancer, there were knowledge limitations related to risk factors, relative frequency of the disease (to other cancers), and selected aspects of PSA effectiveness. There was considerable variation in perceived effectiveness of early detection methods, with most physicians taking a conservative approach to PSA utilization. Most family physicians indicated that they have an important role to play in the care of men after they have been diagnosed with prostate cancer. They also expressed a high level of interest in obtaining additional information related to prostate cancer.

Objective: To examine the frequency of presentation to family physicians' offices for cold symptoms, the reasons for presentation, and the duration of symptoms before presentation., Design: Prospective cross-sectional survey., Participants: One hundred consecutive patient encounters in each of 15 family practices from January 27 to February 3, 1994, involving both academic and non-academic family physicians in the London region. Data were collected prospectively using a checklist attached to each chart., Main Outcome Measures: Proportion of patients presenting with cold symptoms, reasons for presentation, number of days patients had had symptoms, billing code., Results: A total of 1421 checklists were analyzed, 822 from academic practices and 599 from community practices. Proportion of presentations for cold symptoms was 14.8%, but visits coded as common cold represented 5.7%. Median number of days patients waited before presentation was 7.0; older patients tended to wait longer. Many patients were worried about developing complications (51.0%) or were fed up with their symptoms (31.9%). Most patients were between the ages of 20 and 64 (44.6%), and 57.6% of all patients had developed complications requiring treatment., Conclusions: The proportion of visits coded as common cold was lower than Ontario averages. Most patients had complications rather than simple colds and had managed their symptoms on their own for a fairly long time.

Purpose: Despite the phenomenal growth during the past decade of cancer self-help groups for adult patients with cancer, little research has been conducted to document the interface between these groups and healthcare professionals, especially physicians. This study was initiated to provide information about family physician practices, awareness, and attitudes about self-help groups., Description: A survey questionnaire was mailed to a random sample of Ontario family physicians drawn from the College of Family Physicians of Canada's membership database., Results: A total of 911 completed questionnaires were returned, for a response rate of 64%. A majority (56.8%) of respondents were aware of at least one cancer self-help group in their region; 26.8% of these spoke frequently with their cancer patients about such groups. Most family physicians indicated that they were positively inclined toward cancer self-help groups, giving especially high ratings of helpfulness to sharing common experiences, overcoming isolation, feeling understood, and sharing information. Ratings of potential harm were low, with the most concern expressed about the possible provision of misinformation and the promotion of unconventional therapies. Responses to an open-ended question showed that many family physicians qualify their support for cancer self-help groups, depending on patient need, group composition, and leadership., Clinical Implications: Family physicians and other members of the cancer care team should give increased attention to informing cancer patients about the potential benefits of self-help groups. Efforts need to be made to assist cancer self-help groups in developing informational brochures and to ensure that groups are listed in cancer resource directories. Educational initiatives about self-help groups would be useful for family physicians and other health professionals engaged in the care of cancer patients.

Objective: To assess Ontario family physicians' attitudes toward, awareness of, and practices related to self-help groups in general and cancer self-help groups specifically., Design: Mailed survey using a modified Dillman method., Setting: Ontario family practices., Participants: A random sample of 1500 Ontario members of the College of Family Physicians of Canada, of whom 949 responded. A total of 911 completed questionnaires were received, for an eligible response rate of 64%., Main Outcome Measures: Physician demographics, practice characteristics; extent of awareness of self-help groups and their perceived value; attitudes toward self-help groups; practices related to interactions with patients about self-help groups., Results: Only 40.2% of respondents were aware of six or more self-help groups in their region; 56.8% were aware of at least one cancer self-help group. Discussions with patients about groups were reported as occurring "frequently" by 12% of respondents, who indicated they made referrals to an array of groups. Ratings of group helpfulness were relatively high (83.8% scoring 3, 4, or 5 on a 5-point scale, where 5 is "very helpful"). There were low ratings of potential harm (1% scoring 4 or 5 on a 5-point scale, where 5 is "very harmful"). Confidence intervals for proportions reported on in this paper were all within 4%., Conclusions: Family physicians have predominantly positive attitudes about the potential benefits of self-help groups, and many are recommending groups to their patients.

Objective: To identify factors associated with the location of death (home or hospital) of patients referred to a palliative care home support team., Design: Retrospective case-control chart review., Setting: Palliative care inpatient unit with a home support team in a large chronic care hospital., Subjects: All 75 patients receiving services from the home support team who died at home between June 1988 and January 1990 and 75 randomly selected patients receiving the same services who died in hospital., Outcome Measures: Place of death (home or hospital)., Results: Of the 267 patients referred to the palliative care home support team during the study period 75 (28.1%) died at home. Factors significantly associated with dying at home were the patient's preference for dying at home recorded at the time of the initial assessment (p < 0.001), a family member other than the spouse involved in the patient's care (p = 0.021) and the use of private shift nursing (p < 0.001). The patients who died in hospital were more likely than the other patients to have had no home visits from the palliative care team after the initial assessment (p = 0.04). The patient's preference for dying at home was not met if the caregiver could not cope or if symptoms were uncontrolled. The patient's preference for dying in hospital was not met if his or her condition deteriorated rapidly or if the patient died suddenly., Conclusions: Patients' preference as to place of death, level of caregiver support and entitlement to private shift nursing were significantly associated with patients' dying at home. The determination of these factors should be part of every palliative care assessment. Patients and their families should be informed about available home support services.

This study measures changes in clinical confidence experienced by 42 family practice residents as they progressed through a 2-year residency program. At the beginning, 20% or more of respondents reported they lacked confidence in 47 of the 177 topics. Self-assessed competence increased substantially in many areas. However, during the residency, new areas of concern emerged.