Scaling of buccal mass growth and muscle activation determine the duration of feeding behaviours in the marine mollusc Aplysia californica.

The mechanical forces experienced during movement and the time constants of muscle activation are important determinants of the durations of behaviours, which may both be affected by size-dependent scaling. The mechanics of slow movements in small animals are dominated by elastic forces and are thus quasistatic (i.e. always near mechanical equilibrium). Muscular forces producing movement and elastic forces resisting movement should scale identically (proportional to mass2/3), leaving the scaling of the time constant of muscle activation to play a critical role in determining behavioural duration. We tested this hypothesis by measuring the duration of feeding behaviours in the marine mollusc Aplysia californica whose body sizes spanned three orders of magnitude. The duration of muscle activation was determined by measuring the time it took for muscles to produce maximum force as A. californica attempted to feed on tethered inedible seaweed, which provided an in vivo approximation of an isometric contraction. The timing of muscle activation scaled with mass0.3. The total duration of biting behaviours scaled identically, with mass0.3, indicating a lack of additional mechanical effects. The duration of swallowing behaviour, however, exhibited a shallower scaling of mass0.17. We suggest that this was due to the allometric growth of the anterior retractor muscle during development, as measured by micro-computed tomography (micro-CT) scans of buccal masses. Consequently, larger A. californica did not need to activate their muscles as fully to produce equivalent forces. These results indicate that muscle activation may be an important determinant of the scaling of behavioural durations in quasistatic systems.

Efficacy and threshold dose of intensive training targeting mobility for children with cerebral palsy: A systematic review and meta-analysis.

AIM: To systematically review the evidence for intensive mobility training in cerebral palsy (CP) and to determine the minimum effective dose to improve mobility. METHOD: Randomized controlled trials (RCTs) or quasi-RCTs that included participants with CP, and which used intensive task-oriented training (TOT) mobility interventions and reported mobility outcomes, were included. Five databases were searched; two independent reviewers selected studies and extracted data. The Grading of Recommendations Assessment, Development, and Evaluation system and the Cochrane Risk of Bias 2 tool were used to rate the certainty of evidence at the outcomes level and to determine the risk of bias respectively. Meta-analyses were conducted with clinically homogeneous studies. Threshold dose was analysed through meta-regression. RESULTS: Forty-six RCTs with 1449 participants (mean age range 1 year 2 months to 16 years 4 months) were included. TOT had statistically and clinically significant effects on walking speed (p = 0.001), cadence (p = 0.02), gross motor function (p = 0.03), and functional mobility (p = 0.009) compared with control interventions. The threshold dose was undeterminable owing to the high heterogeneity of studies. INTERPRETATION: TOT may improve walking speed, walking endurance, and balance. Studies with homogeneous samples and outcomes are needed to support clinical recommendations for intensive mobility interventions.

Home participation and personal and environmental factors in children and adolescents with Down syndrome.

AIM: To describe current home participation (frequency, involvement) and caregiver's desire for change in home participation of children and adolescents with Down syndrome, as well as home environmental factors, and to explore the associations of personal and environmental factors with current participation and caregiver's desire for change. METHOD: Eighty-two caregivers (mean age = 45 years 10 months) of children and adolescents with Down syndrome (mean age = 10 years 7 months) were surveyed about the child's home participation and environmental factors using the Participation and Environment Measure-Children and Youth. Furthermore, children's personal and environmental factors were collected. Results are reported using descriptive analysis and correlations (Spearman's rank correlation coefficients and Mann-Whitney U test) to describe the relationship between current participation and caregiver's desire for change, with personal and environmental factors as ordinal and nominal variables respectively (p < 0.05). RESULTS: Children's participation was highest with regard to personal care management and lowest with regard to school-related activities. Most caregivers desired change in homework and household chores. Greater frequency was associated with male sex, caregiver less rigorous social distancing due to the COVID-19 pandemic, and children receiving therapies. Greater involvement was associated with younger age in children and higher environmental support. Older age in children was associated with caregiver's greater desire for change. INTERPRETATION: Personal and environmental factors correlated with participation in specific ways. Creative strategies to promote participation that consider caregiver's wishes should be undertaken.

Gross Motor Family Report: Refinement and evaluation of psychometric properties.

AIM: To refine the Gross Motor Family Report (GM-FR) using parents' input and to evaluate its psychometric properties. METHOD: In this measurement study, 12 parents of children and adolescents with cerebral palsy (CP), aged 2 to 18 years, classified in all levels of the Gross Motor Function Classification System (GMFCS), were interviewed about their experience completing the GM-FR (content validity). Parents' feedback was used to refine the measure which was then completed by 146 families to evaluate internal consistency, and discriminative and concurrent validity. Forty-six parents completed the GM-FR again, 7 to 30 days later, to evaluate test-retest reliability. RESULTS: GM-FR scoring, pictures, descriptions, and the total number of items were revised based on parents' feedback. The GM-FR version 2.0 demonstrated high internal consistency (Cronbach's α = 0.99), no floor/ceiling effects, and excellent test-retest reliability (intraclass correlation coefficient = 0.99). GM-FR scores discriminated between GMFCS levels (p < 0.05) and were strongly negatively correlated with GMFCS level (r = -0.92; p < 0.001). GM-FR scores correlated positively and strongly with the Gross Motor Function Measure-66 (r = 0.94; p < 0.001) and the Pediatric Evaluation of Disability Inventory - Computer Adaptive Test mobility domain (r = 0.93; p < 0.001). INTERPRETATION: Active participation of families in the GM-FR's development facilitated creation of a family-friendly instrument. This study provides strong evidence of reliability and validity to support GM-FR use in clinical practice and research for assessing gross motor performance of children and adolescents with CP.

Influence of sociodemographic and obstetric factors on maternal mortality in Brazil from 2011 to 2021.

BACKGROUND: Obstetric causes are classified as direct (complications of pregnancy, childbirth or the puerperium) or indirect (caused by pregnancy but not directly caused by it). This study aimed to analyze maternal mortality from obstetric causes in Brazil from 2011 to 2021. METHODS: This was an ecological study on mortality and live births. The outcomes were the specific risk of mortality from direct and indirect cause adjustment and death during pregnancy and the puerperium. Binary and multiple linear logistic regressions were used to assess the influence of sociodemographic factors and maternal and child health indicators on maternal mortality and time of death (pregnancy and puerperium). RESULTS: Regarding mortality during pregnancy and during the puerperium, increased (p = 0.003) and decreased (p = 0.004) mortality over the years, respectively; residing in the northern region was associated with lower (p < 0.05) and greater (p = 0.035) odds; and the Maternal Mortality Committee was the primary and least active source of investigation, respectively (p < 0.0001). The number of deaths from indirect causes increased with age (p < 0.001) and in the northern region (p = 0.011) and decreased in the white (< 0.05) and stable union (0.002) regions. Specifically, for mortality risk, the age group [women aged 15-19 years presented an increase in cesarean section (p < 0.001) was greater than that of women who had < 4 antenatal visits (p < 0.001)], education [women who completed high school (8 to 11 years) was greater when they had < 4 prenatal visits (p = 0.018)], and marital status [unmarried women had more than 4 antenatal visits (p < 0.001); cesarean birth (p = 0.010) and < 4 antenatal visits (p = 0.009) were predictors of marriage; and women in a stable union who had < 4 prenatal visits and live births to teenage mothers (p < 0.001) were predictors]. Women who had no education (p = 0.003), were divorced (p = 0.036), had cesarean deliveries (p < 0.012), or lived in the north or northeast (p < 0.008) had higher indirect specific mortality risk. CONCLUSIONS: Sociodemographic factors and maternal and child health indicators were related to different patterns of obstetric mortality. Obstetric mortality varied by region, marital status, race, delivery, prenatal care, and cause of death.

Pharmacomechanical thrombectomy with Angiojet in acute arterial occlusions: A prospective study among the results and outcomes.

OBJECTIVE: The main objective of this present paper was to evaluate the results and outcomes of patients with acute limb ischemia (ALI) submitted to pharmacomechanical thrombectomy (PMT) endovascular surgery with Angiojet, regarding the number of cycles/pumps. METHODS: Prospective, consecutive cohort study of ALI patients submitted to PMT endovascular intervention subdivided into two groups according to the number of cycles in the Angiojet technique: Group 1 higher than 150 cycles/second and Group 2 lesser than 150 cycles/second (cycles/s). RESULTS: Overall, 92 patients with ALI submitted to PMT were evaluated. Two groups of patients were identified: Group 1 higher than 150 cycles/s with 60 patients and Group 2 lesser than 150 cycles/s with 32 patients. The overall mortality rate (OMR) was 15.1% (13 patients) in total cohort within the first 30 days. Group 1 had a higher OMR than Group 2 (16.1% vs 9.3%, p = 0.007). There were 4 cases of hematuria (4.3%), all of them in Group 1. We have performed a Kaplan-Meier regarding limb salvage rates: Group 1 had 85% and Group 2 had 95.7% at 1057 days. P = 0.081. Among the factors evaluated, the following were related to overall mortality rate: PMT with higher >150 cycles/s (HR = 7.17, p = 0.007, CI: 1.38-8.89), COVID-19 infection (HR = 2.75, p = 0.010, CI = 1.73-5.97), and post-operative acute kidney injury (HR = 2.97, p < 0.001, CI = 1.32-8.13). Among the factors evaluated, the following was related to limb loss: post-operative acute kidney injury (HR = 4.41, p = 0.036, CI: 1.771-7.132), probably because patients experiencing limb loss have a higher incidence of acute renal insufficiency due to higher circulating myoglobin higher hemolysis from the increased Angiojet cycles inducing rhabdomyolysis. CONCLUSION: PMT with Angiojet is a safe and effective therapy in patients with ALI. However, patients receiving greater than 150 cycles/s were noted to have higher rates of acute kidney injury and mortality. This is likely reflective of increased thrombus burden and higher rates of hemolysis. Acute kidney injury, greater than 150 cycles/s, and COVID-19 infection were the variables with the strongest association to perioperative mortality.

Aptamers: A Cutting-Edge Approach for Gram-Negative Bacterial Pathogen Identification.

Early and accurate diagnoses of pathogenic microorganisms is essential to correctly identify diseases, treating infections, and tracking disease outbreaks associated with microbial infections, to develop precautionary measures that allow a fast and effective response in epidemics and pandemics, thus improving public health. Aptamers are a class of synthetic nucleic acid molecules with the potential to be used for medical purposes, since they can be directed towards any target molecule. Currently, the use of aptamers has increased because they are a useful tool in the detection of specific targets. We present a brief review of the use of aptamers to detect and identify bacteria or even some toxins with clinical importance. This work describes the advances in the technology of aptamers, with the purpose of providing knowledge to develop new aptamers for diagnoses and treatment of different diseases caused by infectious microorganisms.

Physical Therapy Services During COVID-19 Pandemic: Perception of Families of Brazilian Children With Physical Disabilities.

PURPOSE: To describe the perspective of caregivers about physical therapy (PT) during the COVID-19 pandemic and the effect of social distancing on the health of children with physical disabilities. METHODS: This survey research used a remote questionnaire to identify the perceptions of caregivers about the effect of the COVID-19 pandemic on the health of children and adolescents with physical disabilities and on PT services. Data were analyzed using the frequency of responses; open-ended questions were analyzed through a hybrid approach to thematic analysis. RESULTS: Caregivers of 47 children with cerebral palsy were included. Although most received regular PT services during the pandemic, worsened children's physical conditions and anxiety were prevalent. Caregivers believed that they lacked technical skills. CONCLUSIONS: Social distancing impacted the health of children with physical disabilities, especially their physical conditions. Identifying facilitators and barriers for PT services can be helpful in future similar scenarios.Video abstract Supplemental Digital Content available at:http://links.lww.com/PPT/A503.

Practices of Physical Therapists Who Assist People With Cerebral Palsy in Brazil: A National Survey.

PURPOSE: To describe the practices of pediatric physical therapists (PTs) working with children and adolescents with cerebral palsy (CP) in Brazil. METHODS: PTs working with children and adolescents with CP were invited to participate via social media and email campaigns to complete an online survey containing 46 questions. RESULTS: In total, 373 PTs participated. Most PTs reported searching in scientific databases (96.8%) and on social media (71%). The main barrier to information reported was limited access to full-text articles (44%). Among the PTs, 58.4% and 84% reported using the International Classification of Functioning, Disability and Health (ICF) and family centered practice models, respectively. Regarding tools and interventions, there was little focus on the domains of contextual factors and participation. CONCLUSIONS: This survey points to some important advances. However, strategies are still needed to promote knowledge translation and evidence-based practices among pediatric PTs in Brazil.

Ileus at Altitude.

Autoimmune myasthenia gravis (MG) is a condition commonly caused by the production of antibodies that block acetylcholine receptors. Until recently, gastrointestinal (GI) symptoms were considered rare in myasthenia gravis, but are now being proposed as an early identification tool. Presented here is a case study that exemplifies GI symptoms in MG, exacerbated by low barometric pressure at altitude. This illustrates the need to identify GI symptoms earlier in MG patients, as well as the need for providers at high altitude to be aware of these manifestations of MG.

Primary Squamous Cell Carcinoma of the Stomach: A Case Report.

Gastric squamous cell carcinoma (SCC) is a rare and puzzling entity that challenges conventional paradigms of gastric malignancies, especially in young adults. This case report presents a 22-year-old male with invasive SCC of the stomach, emphasizing the rarity of such occurrences and their diagnostic challenges. The literature review underscores the scarcity of information on gastric SCC, necessitating a critical examination of its clinical implications, etiological factors, and optimal management. The patient's complex medical history, diagnostic journey, and treatment course are detailed, highlighting the importance of multidisciplinary collaboration and advanced diagnostic techniques. Immunohistochemistry is a crucial tool for precise tumor characterization, and the absence of established risk factors emphasizes the enigmatic nature of gastric SCC. This case report contributes to the understanding of gastric SCC, prompting further research into its unique features, etiology, and therapeutic strategies in the context of gastric cancer.

Cross-cultural adaptation of the Rotterdam Transition Profile to Brazilian Portuguese: measuring autonomy in participation of Brazilian youth with cerebral palsy.

BACKGROUND: Autonomy in participation of young adults with cerebral palsy (CP) is not well understood due to the lack of appropriate instruments, especially for the Brazilian population. The Rotterdam Transition Profile (RTP) categorizes autonomy in Participation (education, employment, finances, housing, leisure, intimate relationships, sexuality, transportation) and Health Services (care demands, services and aids, and rehabilitation services) domains. OBJECTIVES: To cross-culturally adapt the RTP for use in Brazil, and to describe the levels of autonomy in participation and associated factors of Brazilian youth with CP. METHODS: RTP was translated and content validity was investigated through an expert panel (n = 4 researchers and n = 4 clinicians); 30 adolescents and young adults with CP provided data for construct validity and internal consistency analysis. To analyze influencing factors, 56 youth with CP, mean age 25 years (SD = 6.9 years), with good cognitive level remotely responded to the RTP, sociodemographic information, and functional classifications (gross motor, manual ability). RESULTS: Following translation, content and construct validity were established, with changes made to improve the clarity of items. Cronbach's alpha (0.82) was considered good and test-reliability was fair to good for most items. High levels of autonomy were found in the areas of Leisure and Rehabilitation, with the lowest proportion of participants with autonomy in Housing, Intimate Relationships, and Finances. Autonomy in participation was associated with age, gross motor and manual ability classifications, and with context-related factors. CONCLUSION: The Brazilian Portuguese version of the RTP was considered valid and reliable. Findings will support transition planning for young people with CP.

Looking beyond Body Structure and Function: ICF Foci and Who Is Being Assessed in Research about Adolescents and Young Adults with Cerebral Palsy-A Scoping Review.

PURPOSE: The purpose of this study is to summarize the ICF foci, looking beyond body structures and function, and to analyze who has been assessed in research about adolescents and young adults (AYAs) with CP in the phase of transition to adulthood. METHOD: Medline, EMBASE, PsycINFO, and CINAHL databases were searched using terms related to cerebral palsy, adolescents/young adults, health development, participation, and independence. Studies including youth with CP (13-30 years old) published in English from 2014 to 2021 were considered. The methods of assessment reported in the included studies were used to identify the ICF foci and who was assessed. RESULTS: In this study, 86 studies were reviewed. The main ICF foci are activity and participation (51% of the studies), personal factors (23%), ICF not covered (14%), ICF not defined (9%), with environmental factors being the least focused ICF component (3%). Most studies assessed AYAs directly (49% of studies). CONCLUSIONS: Activity- and participation-related constructs are the leading research focus of studies, and more attention is needed concerning environmental factors. AYAs are the main source of information, and the perspectives of other key figures are also being valued. To bridge the gap between child and adult health care, a broader view of health development and approaches to explore AYA developmental issues must be taken.

Go Zika Go: feasibility study with modified motorized ride-on cars for the mobility of children with Congenital Zika Syndrome (CZS).

PURPOSE: To explore the feasibility of an intervention using modified ride-on cars in terms of acceptability and potential changes in goal attainment, mobility, social function, and participation of children with Congenital Zika Syndrome (CZS). MATERIALS AND METHODS: A pre- and post-intervention feasibility study was conducted with children with CZS, levels IV and V of the Gross Motor Function Classification System (GMFCS). The intervention consisted of 12 weeks of training (3 times a week for 40 min per session) and 4 weeks of follow-up. The primary outcomes included adherence, satisfaction, and learning in mobility. Secondary outcomes encompassed goal attainment, mobility, social/cognitive function, and participation. Descriptive statistics were performed. To explore potential individual changes with the intervention, Wilcoxon test was used to analyze Pediatric Evaluation of Disability Inventory - Computer Adaptive Test (PEDI-CAT) data and Young Children's Participation and Environment Measure (YC-PEM)/Participation and Environment Measure for Children and Youth (PEM-CY), along with standard error measurements of the PEDI-CAT domains. RESULTS: Four children participated (median age 4.75 years; two females: three at level V on the GMFCS). Adherence was 75% of the total intervention time, and family members reported being satisfied or very satisfied. Children showed gains in learning the use of the modified ride-on cars and an increase in goal attainment after the intervention. Individual changes were observed in the PEDI-CAT domains (mobility and social/cognitive), but there were no significant changes in participation outcomes. CONCLUSIONS: Children with CZS at GMFCS levels IV and V can learn to use motorized ride-on cars, attainment goals, and experience satisfaction.

Motorized mobility for children with Congenital Zika Syndrome and severe physical and cognitive disabilities is feasible and can encourage future interventions focused on activities and participation.This research contributes to the understanding of the potential changes that motorized mobility can have on goal attainment, satisfaction, and learning.Motorized mobility can be a means to enable children with Congenital Zika Syndrome to have opportunities for participation and guarantee their rights.

Efficacy of deep brain stimulation of the subthalamic nucleus versus globus pallidus internus on sensory complaints.

Pain control after deep brain stimulation (DBS) in Parkinson's disease (PD) remains unclear. Following six months, subthalamic (STN)-DBS reduced sensory complaints related to parkinsonism and bodily discomfort, increasing central beta-endorphin level. Pallidal GPi-DBS decreased bodily discomfort and beta-endorphin levels. Unexplained pain by other conditions and bodily discomfort were negatively correlated with beta-endorphin levels. Thus, DBS regulates central opioids, and prioritizing STN is important for PD patients with significant sensory complications.

Emerging Approaches for Mitigating Biofilm-Formation-Associated Infections in Farm, Wild, and Companion Animals.

The importance of addressing the problem of biofilms in farm, wild, and companion animals lies in their pervasive impact on animal health and welfare. Biofilms, as resilient communities of microorganisms, pose a persistent challenge in causing infections and complicating treatment strategies. Recognizing and understanding the importance of mitigating biofilm formation is critical to ensuring the welfare of animals in a variety of settings, from farms to the wild and companion animals. Effectively addressing this issue not only improves the overall health of individual animals, but also contributes to the broader goals of sustainable agriculture, wildlife conservation, and responsible pet ownership. This review examines the current understanding of biofilm formation in animal diseases and elucidates the complex processes involved. Recognizing the limitations of traditional antibiotic treatments, mechanisms of resistance associated with biofilms are explored. The focus is on alternative therapeutic strategies to control biofilm, with illuminating case studies providing valuable context and practical insights. In conclusion, the review highlights the importance of exploring emerging approaches to mitigate biofilm formation in animals. It consolidates existing knowledge, highlights gaps in understanding, and encourages further research to address this critical facet of animal health. The comprehensive perspective provided by this review serves as a foundation for future investigations and interventions to improve the management of biofilm-associated infections in diverse animal populations.

Neuroinflammation in the prefrontal-amygdala-hippocampus network is associated with maladaptive avoidance behaviour.

Maladaptive avoidance behaviour is often observed in patients suffering from anxiety and trauma- and stressor-related disorders. The prefrontal-amygdala-hippocampus network is implicated in learning and memory consolidation. Neuroinflammation in this circuitry alters network dynamics, resulting in maladaptive avoidance behaviour. The two-way active avoidance test is a well-established translational model for assessing avoidance responses to stressful situations. While some animals learn the task and show adaptive avoidance (AA), others show strong fear responses to the test environment and maladaptive avoidance (MA). Here, we investigated if a distinct neuroinflammation pattern in the prefrontal-amygdala-hippocampus network underlies the behavioural difference observed in these animals. Wistar rats were tested 8 times and categorized as AA or MA based on behaviour. Brain recovery followed for the analysis of neuroinflammatory markers in this network. AA and MA presented distinct patterns of neuroinflammation, with MA showing increased astrocyte, EAAT-2, IL-1ß, IL-17 and TNF-ɑ in the amygdala. This neuroinflammatory pattern may underlie these animals' fear response and maladaptive avoidance. Further studies are warranted to determine the specific contributions of each inflammatory factor, as well as the possibility of treating maladaptive avoidance behaviour in patients with psychiatric disorders with anti-inflammatory drugs targeting the amygdala.

Insertional effect following electrode implantation: an underreported but important phenomenon.

Deep brain stimulation has revolutionized the treatment of movement disorders and is gaining momentum in the treatment of several other neuropsychiatric disorders. In almost all applications of this therapy, the insertion of electrodes into the target has been shown to induce some degree of clinical improvement prior to stimulation onset. Disregarding this phenomenon, commonly referred to as 'insertional effect', can lead to biased results in clinical trials, as patients receiving sham stimulation may still experience some degree of symptom amelioration. Similar to the clinical scenario, an improvement in behavioural performance following electrode implantation has also been reported in preclinical models. From a neurohistopathologic perspective, the insertion of electrodes into the brain causes an initial trauma and inflammatory response, the activation of astrocytes, a focal release of gliotransmitters, the hyperexcitability of neurons in the vicinity of the implants, as well as neuroplastic and circuitry changes at a distance from the target. Taken together, it would appear that electrode insertion is not an inert process, but rather triggers a cascade of biological processes, and, as such, should be considered alongside the active delivery of stimulation as an active part of the deep brain stimulation therapy.

Exploring the Association between Educational Aspirations and Intentions to Migrate among Youth in Central Mexico by Gender.

We assessed the association between educational aspirations and the intention to migrate among 1,446 adolescents aged 11-17 years, living in semi-urban/rural communities in Jalisco, Mexico. Analyses rely on survey data from the Family Migration and Early Life Outcomes study. The outcome variable was the intention to migrate, a three-category variable coded as no intention to migrate, intention to migrate within Mexico, and intention to migrate internationally. The main independent variable was the adolescents' educational aspirations, conceptualized as the intention to achieve higher education. Multinomial logistic regression models were used to examine associations. We found an association between educational aspirations and intentions to migrate, and it was moderated by gender. Girls with the highest educational aspirations intended to migrate internationally, while higher educational aspirations were not a driver for boys' migration intentions. The study findings have implications for education and migration policies and future research.

Bacterial load in cerebrospinal fluid predicts unfavourable outcome in pneumococcal meningitis: a prospective nationwide cohort study.

OBJECTIVES: The objective of this study was to determine the role of cerebrospinal fluid (CSF) bacterial load in adults with pneumococcal meningitis. METHODS: We quantified bacterial load in CSF samples from the diagnostic lumbar puncture of adults with community-acquired pneumococcal meningitis. We also measured CSF concentrations of complement component 5a (C5a), and determined associations between bacterial load, clinical characteristics, C5a and unfavourable outcome (Glasgow Outcome Scale score <5). RESULTS: Bacterial load was quantified in 152 CSF samples. Median age of these patients was 61 years (interquartile range [IQR] 51-68), and 69 of 152 (45%) were female. Median CSF bacterial load was 1.6 × 104 DNA copies/mL (IQR 3.4 × 103-1.2 × 105), and did not correlate with CSF white cell count nor with CSF protein concentrations. Median CSF C5a concentration was 35.8 mg/L (IQR 15.9-105.6), and was moderately correlated with CSF bacterial loads (Spearman's rho = 0.42; p < 0001). High bacterial loads were associated with development of complications, such as circulatory shock (OR per logarithmic increase: 2.4, 95% CI: 2.0-2.9; p < 0.001) and cerebrovascular complications [OR: 1.9, 95% CI: 1.6-2.3; p < 0.001]). High bacterial loads were also associated with unfavourable outcome (OR: 2.8, 95% CI: 2.4-3.3; p < 0.001) and death (OR: 3.1, 95% CI: 2.6-3.8; p < 0.001). In a multivariable regression model including age, immunocompromised state, extrameningeal infection focus, admission Glasgow Coma Scale score and CSF C5a concentration, CSF bacterial load remained an independent predictor of unfavourable outcome (adjusted OR: 2.5, 95% CI: 1.6-3.9; p < 0.001). DISCUSSION: High CSF bacterial load predicts the development of complications and unfavourable outcome in adults with pneumococcal meningitis.