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Low and middle-income countries (LMICs) hold the majority of disease burden attributed to major depressive disorder (MDD). Despite this, there remains a substantial gap for access to evidence-based treatments for MDD in LMICs like Pakistan. Measurement-based care (MBC) incorporates systematic administration of validated outcome measures to guide treatment decision making and is considered a low-cost approach to optimise better clinical outcomes for individuals with MDD but there is a paucity of evidence on the efficacy of MBC in LMICs.
Objectives
This protocol highlights a randomized trial which will include Pakistani outpatients with moderate to severe major depression.
Methods
Participants will be randomised to either MBC (guided by schedule), or standard treatment (guided by clinicians’ judgement), and will be prescribed with paroxetine (10–60mg/day) or mirtazapine (7.5–45mg/day) for 24 weeks. Outcomes will be evaluated by raters blind to study protocol and treatment.
Results
National Bioethics Committee (NBC) of Pakistan has given full ethics approval. The trial is being conducted and reported as per recommendation of the CONSORT statement for RCTs.
Conclusions
With increasing evidence from high-income settings supporting the effectiveness of MBC for MDD, it is now necessary to explore its feasibility, utility. and efficacy in low-resource settings. The results of the proposed trial could inform the development of a low-cost and scalable approach to efficiently optimise outcomes for individuals with MDD in Pakistan.
Suicide is a leading cause of death among young people and most deaths by suicide occur in low and middle-income countries. School is the best place where we can identify and respond to youth suicide risk. School-based interventions for suicide prevention in young people have been successful across US, Europe and Australia, but require adaptations to be acceptable and feasible in Pakistan.
Objectives
To develop and test culturally adapted preventative interventions for suicidal behaviours among pupils in secondary schools in Pakistan. The qualitative component aimed at exploring the views of students, parents, teachers and general practitioners on cultural adaptation, experience of participation, areas of improvement and suggestions for scale-up of the school-based suicide prevention program (SEPAK).
Methods
A clustered randomised controlled trial. The four culturally modified interventions 1) Linking Education and Awareness of Depression and Suicide Awareness (LEADS) Training for pupils (students=260) 2) the Question, Persuade, and Refer (QPR) for teachers (students=203) 3) QPR for parents (students=445); 4) Screening by Professionals (Profscreen) (students=260) were compared against control intervention (educational posters) (students=227). Structured questionnaires were administered at baseline and 1-month post-intervention to assess suicidal behaviours, psychological well-being and quality of life. A total of 8 focus groups (FGs) were conducted at pre and post intervention stage with each stakeholders.
Results
Patient and public involvement and Engagement (PPIE) was strongly embedded in the project to ensure meaningful benefits for participants. A total of 40 schools were recruited from 8 cities across Pakistan. A total of 243 students attended LEADS intervention, 92 teachers and 304 parents completed QPR training, and 9 general practitioners were trained in ProfScreen. The retention rate at follow-up was 99% that shows feasibility of delivering intervention package in Pakistan. All participants marked SEPAK as effective in identifying risk of and preventing self-harm and suicide in young people and in improving pathways to treatment. Interventions were perceived as helpful in improving knowledge about mental health, impact of mental health difficulties on functioning, reducing stigma, equipping stakeholders to identify and signpost at-risk people. Improvement in clinical and teaching practice as well as understanding others behaviors were also reported.
Conclusions
This study suggest feasibility of integrating a suicide prevention program in existing educational system and highlights positive role of creating awareness about suicide in youth, introduction of school-based mental health programs, parental counseling and strengthening of the health system by training general practitioners in early identification of suicide risk and promoting suicide prevention strategies
Depression is the leading cause of disability worldwide and low and middle-income countries (LMICs) carry over 80% of this disease burden. Attempts have been made to address depression in LMICs, with improvements in the home environment and maternal knowledge. However paternal depression is a neglected and under-researched area. Since maternal depression is associated with depression in fathers there is a need for partner inclusive parenting programs to address parental mental health and improve child outcomes.
Objectives
To evaluate the clinical and cost effectiveness of partner inclusive Learning through play plus (LTP+) intervention in reducing depression in fathers and mothers.
To evaluate the effectiveness of LTP + intervention in improving child outcomes.
To conduct process evaluation and identify challenges in transition to scale up of the intervention across Karachi, Pakistan from the perspective of fathers, mothers, and other stakeholders.
Methods
This is a cluster randomised controlled (cRCT) trial of partner inclusive group parenting program called (Learning Through Play (LTP+) across 18 towns in the city of Karachi. Over 5000 parents (fathers and partners) will participate in the study with a capacity building component of training 4000 Community Health Workers across Pakistan.
Results
This large cRCT will confirm the clinical and cost-effectiveness of LTP+ in reducing depression in parents and improving child outcomes along with the barriers and facilitators to implement the LTP+ group parenting program and the possibilities to roll out the innovation at national level through engagement with policy makers.
Conclusions
Addressing depression in parents is hugely important because of its adverse effects both for child and parents. This low-cost group parenting program will help in scaling up the innovation across health services in Pakistan and other LMICs.
The variable rate of infarct progression in acute ischemic stroke as assessed by various thresholds excludes a substantial proportion of patients due to time or core constraints. We evaluated 106 patients with any-type occlusion to compare these thresholds and assessed performance of hypoperfusion index (HI) for fast and slow rate of infarct progression. Seven (12.5%) were classified fast progressors and 23 (46%), 25 (50%), 12 (24%), and 33 (66%) slow progressors using different core and time criteria. In comparison, HI categorized 100% (n = 106) of cohort with optimal cutoff 0.5 for any-type occlusion (slow progressors: HI ≤ 0.5), sensitivity/specificity 100%/91%, AUC 0.94, and indicative of eligibility for reperfusion and clinical outcomes (median 90-day modified Rankin Scale; 2 for HI ≤ 0.5 versus 5). Estimation of progressors by HI seems comprehensive but needs external validation.
A new guideline for mitigating indoor airborne transmission of COVID-19 prescribes a limit on the time spent in a shared space with an infected individual (Bazant & Bush, Proceedings of the National Academy of Sciences of the United States of America, vol. 118, issue 17, 2021, e2018995118). Here, we rephrase this safety guideline in terms of occupancy time and mean exhaled carbon dioxide (${\rm CO}_{2}$) concentration in an indoor space, thereby enabling the use of ${\rm CO}_{2}$ monitors in the risk assessment of airborne transmission of respiratory diseases. While ${\rm CO}_{2}$ concentration is related to airborne pathogen concentration (Rudnick & Milton, Indoor Air, vol. 13, issue 3, 2003, pp. 237–245), the guideline developed here accounts for the different physical processes affecting their evolution, such as enhanced pathogen production from vocal activity and pathogen removal via face-mask use, filtration, sedimentation and deactivation. Critically, transmission risk depends on the total infectious dose, so necessarily depends on both the pathogen concentration and exposure time. The transmission risk is also modulated by the fractions of susceptible, infected and immune people within a population, which evolve as the pandemic runs its course. A mathematical model is developed that enables a prediction of airborne transmission risk from real-time ${\rm CO}_{2}$ measurements. Illustrative examples of implementing our guideline are presented using data from ${\rm CO}_{2}$ monitoring in university classrooms and office spaces.
This study aims to assess the stress levels, stress busters (stress relievers), and coping mechanisms among Saudi dental practitioners (SDPs) during the coronavirus disease (COVID-19) pandemic outbreak.
Method:
A self-administered questionnaire was sent to SDPs via Google Forms. Cohen’s stress score scale was used for stress evaluation, and the mean scores were compared based on age, gender, qualification, and occupation. In addition, comparisons of the utilization of stress coping mechanisms and stress busters based on gender, age, and occupation were evaluated. Descriptive statistics were carried out using SPSS Version 21.0 (IBM Corp, Armonk, NY).
Results:
A total of 206 SDPs (69% males and 31% females) participated in the study. Male SDPs showed a higher score than females (P > 0.05). SDPs around age 50 years and above obtained high stress scores (25 ± 7.4) as compared with other age groups (P < 0.05). The occupational level showed higher stress scores (22.6 ± 4.6 than the other occupation groups (P < 0.05). The majority of the SDPs used watching TV/mobile/computer (80%) as a stress buster, followed by binge eating (64%), exercise (44%), smoking (32%), do-it-yourself (DIY; 23%), and meditation (17%).
Conclusion:
SDPs are experiencing stress levels during the COVID-19 pandemic. Male SDPs above age 50 years and private practitioners showed higher levels of stress scores. An overall commonly used stress buster was smoking in males and meditation in females.
Psychiatric disorders are increasingly prevalent and present as a comorbidity in many hospitalized patients. Studies have demonstrated that the presence of comorbid psychiatric conditions (CPC) is associated with worsened inpatient outcomes. Emergency surgical admissions and the impact of CPC on their outcomes has not been studied in Ireland to date. This study aims to provide a comprehensive analyses of the relationship between a wide range of psychiatric comorbidities and surgical presentations.
Method
The Hospital In-Patient Enquiry (HIPE) and prospectively maintained electronic patient records were used to identify all surgical emergency admissions between 31st August 2019 and 1st September 2020 to Mayo University Hospital, Ireland. Patient demographics, comorbidities, primary diagnoses, length of stay (LoS), discharge destination, and surgical interventions were recorded. Subgroup analyses were performed examining LoS variation in the type of surgical presentation. Physical comorbidities were scored using the Charlson Comorbidity Index (CCI). Statistical calculations were performed using SPSS.
Result
A total of 995 admissions were recorded. The presence of CPC increased the overall mean LoS by 1.9 days (p = .002). This trend was observed in both operative and conservative management. Significant increase in LoS was noted in patients with a comorbid depression (2.4 days, p = .003), dementia (2.8 days, p = .019), and intellectual disability (6.7 days, p = .007). Subgroup analysis revealed greater LoS in patients with CPC diagnosed with non-specific abdominal pain (1.4 days, p = .019), skin and soft tissue infections (2.5 days, p = .040), bowel obstruction (4.3 days, p = .047), and medical disorders (18.6 days, p = .010). The odds of nursing home or convalescence as a discharge destination was 2.44 (95% CI: 1.37–4.35, p = 0.002) in patients with CPC and the odds of self-discharge against medical advice in this population was 4.89 (95% CI: 1.43–16.70, p = 0.005). No significant difference was observed in mortality and readmission rates.
Conclusion
Psychiatric comorbidities significantly impact length of hospital stay and influence discharge planning in surgical inpatients. Greater vigilance is required in providing care for patients with psychiatric comorbidities, particularly those with depression, dementia and intellectual disability. Better optimisation of facilities and a more personalised approach to patients with CPC are required to improve inpatient outcomes and resource allocation.
A compartmental model is proposed to predict the coronavirus 2019 (Covid-19) spread. It considers: detected and undetected infected populations, social sequestration, release from sequestration, plus reinfection. This model, consisting of seven coupled equations, has eight coefficients which are evaluated by fitting data for eight US states that make up 43% of the US population. The evolution of Covid-19 is fairly similar among the states: variations in contact and undetected recovery rates remain below 5%; however, variations are larger in recovery rate, death rate, reinfection rate, sequestration adherence and release rate from sequestration. Projections based on the current situation indicate that Covid-19 will become endemic. If lockdowns had been kept in place, the number of deaths would most likely have been significantly lower in states that opened up. Additionally, we predict that decreasing contact rate by 10%, or increasing testing by approximately 15%, or doubling lockdown compliance (from the current ~15% to ~30%) will eradicate infections in Texas within a year. Extending our fits for all of the US states, we predict about 11 million total infections (including undetected), and 8 million cumulative confirmed cases by 1 November 2020.
Erectile dysfunction is twice common in patient with depression. Testosterone plays vital role in erectile function. Low testosterone level is found in patients of depression. High level of prolactin has depressive effect on libido function. Hypogonadism and hyperprolactinemia can be the causative factor for depression. Hormonal changes can be both cause and effect of depression with ED.
Method
In sample of 76 patients having depression with co morbid ED blood levels of prolactin, and free testosterone were determined.
Half of patients were treated with sex friendly antidepressants while in other half mesterolone and piribedil were used as adjunct medicines.
Results
In 9.2% free testosterone level was below than reference value. In 28.9% prolactin level was high .51 .31% were found having border line free testosterone level.
In younger age group free testosterone level was lower than older age group. There exist inverse relation between prolactin level and free testosterone level. Patients who were given adjunct medication showed rapid improvement both for depression and erectile dysfunction.
Discussion
Reduced level of free testosterone and high level of prolactin has bilateral relation with depression with co morbid ED. Although prevalence of hypogonadism and hyperprolactinemia is low in the study yet high numbers of borderline cases are of great significance. It is postulated that fall in sexual function is directly proportional to change in levels of these hormones from the base line that are reversed by adjunct medicines.
Conclusion
In patients with concomitant major depression and erectile dysfunction hormonal changes plays important role.
To determine incidence of complicated grief in the families of enforced disappearance in the conflict torn Kashmir valley. Complicated GRIEF is a recently identified symptom complex marked by continued separation distress and bereavement related accompanying traumatic distress.
Methods
A total of 100 family members who were recruited from a workshop conducted by department of psychiatry and MEDICENS SAN FRONTIERS with family members of enforced disappearances were screened by psychiatrists.
Results
COMPLICATED GREIF was very prevalent, 79% screened positive for complicated grief, PTSD was present in 30% of screened, 41% met criteria for major depressive disorder, 38% neither met criteria for major depressive disord: er nor PTSD, even though everybody who met criteria for PTSD had major depressive disorder as comorbidity.
Conclusion
COMPLICATED GRIEF is a important diagnosis in this subgroup of population and results into significant distress and dysfunction and hence warrants attention.
Psychological distress and suicide are known to be associated with exposure to traumatic life events. No literature is available on prevalence of suicidal ideation in the aftermath of terrorist attacks in Pakistan.
Objectives
To study suicidal ideation and desire for death in trauma exposed population in Pakistan.
Aims
To estimate the prevalence of suicidal ideation and desire for death one year after exposure to extreme trauma in a well-defined and accessible group in Pakistan.
Methods
Subjects were examined 1 year after exposure to a bomb blast in Islamabad, Pakistan. A semi-structured interview schedule and Beck Scale for Suicidal Ideation were used to assess a group of female University students. Assessment record of 50 consecutive study participants were evaluated to estimate point prevalence of suicidal ideation and desire for death in the study population.
Results
All subjects were enroled in full time university education at the time of assessment. 17 subjects (34%) presented with weak desire for death whilst 5 subjects (10%) presented with moderate to severe desire for death. 15 Subjects (30%) presented with active suicidal ideation at the time of assessment. However, ony 3 subjects (6%) presented with moderate to severe suicidal ideation. The subjects presenting with suicidal ideation described family ties, religious beliefs, fear of irreversible injury as protective factors against their suicidal thoughts. Only 2 subjects (4%) had engaged in some degree of planning towards committing suicide.
Conclusions
This study provides the first structured estimate of prevalence of suicidal ideation in trauma exposed population of Pakistan.
Severe stress or exposure to life threatening trauma is known to affect social functioning and quality of life.
Objectives
To study well-being and anger arousal as markers of social functioning and quality of life in a group of University students exposed to a suicide bomb attack on a University in Pakistan.
Aims
To examine indicators of social functioning in order to higlight them as targets for therapeutic interventions.
Methods
Subjects were assessed after one year of exposure to a life threatening incident on University campus. Subjects completed an assessment schedule incorporating World Health Organization's Well-Being Index and Novarco Anger Inventory (25 items).
Results
54 students completed the assessment. The mean age of the group was 24 years. All subjects had completed 14–16 years of education and were in full time education at the time of assessment. The Well Being Index Score range was 1–24 with 26 sujects scoring 13 or lower scores indicating poor quality of life. 29 subjects scored higer levels of anger arousal on 10 or more items of Novarco Anger Inventory indicating difficulties in social functioning. The overall group showed a statistically significant negative correlation between the Well-Being Index Scores and the number of Novarco Anger Inventory items scored in the two highest categories of anger arousal.
Conclusions
The results of the study highlight anger arousal and well-being as important markers of functioning in the aftermath of a stressful life event. The study confirms their usefulness as legitimate therapeutic targets for pharmacotherapy, psychotherapeutic, and social interventions.
Early psychosis is not a discrete disorder; rather it is mixed-up state .Different states like depression, anxiety, psychosis, obsession manifest during this period. 20% to 40% of BLIPS positive subjects eventually make transition to psychosis. Large proportion of remaining patients develops anxiety or mood disorders. During early psychosis unitary psychosis, manifest itself in forms of different psychiatric disorders.
Method:
An electronic search was made at data based websites including pub med and Blackwell synergy using key words, unitary psychosis, prodrom, early psychosis .This was followed by manual and internet study of relevant articles .
Results:
Cognitive deficits and defects of facial recognition were present in both schizophrenic and bipolar prodrom .In 24.2% schizo-obsessive patients reduced size of the left hippocampus was found. 84% subjects reported depressive symptoms before transition to psychosis, 73% of patient of schizophrenia starts with non-specific affective and negative symptoms. In presence of depression, probability of transition to psychosis increased from 4% to 21.7%. In 47.3% of patients, OCD occur before onset of frank psychosis.
Discussion:
High prevalence of comorbidities during prodromal phase indicates that shared common factor is involved. Anxiety, depression and attenuated psychosis are integral components of early psychosis. Overlapping of bipolar and schizophrenic prodrms depicts commonality of origin of two disorders.OCD is associated with schizo-obsessive subgroup. Strong interactive relationship among different disorders could be explained on basis of unitary psychosis.
Conclusion:
Presence of unitary psychosis is realized in the studies of early psychosis.
In psychiatry there exist, parallel trends of splitting and clumping of disorders. Former represents dichotomous Kraepelinian trend and latter stands for integrated approach of unitary psychosis .Advancement of biochemical studies and genetics have provided some evidences in favor of unitary psychosis.
Method:
Authors made an internet search at various databases websites including pub med, and Blackwell synergy using, early psychosis, prodrom, neuroprotection, apoptosis as key words. It was followed by manual and internet study of authentic psychiatric journals.
Results:
Anatomical, functional and neurochemical studies of brain reveal structural changes in early psychosis.
In schizophrenia, pathological process is progressive. Brain volume loss continues even after onset of overt symptoms.
Study of subjects in prodromal phase shows 15-point drop in GAD. Significant proportion also met criterion of anxiety 86% depression 76% low energy 62% and, social with drawl 71%.
Discussion:
Unitary psychosis symbolizes concept of unity in diversity. Neurodevelopmental apoptotic process has its own direction that manifests in form of affective symptoms, anxiety symptoms, obsessive symptoms cognitive deficits, positive psychotic symptoms and ends with negative symptoms. It is assumed that neurodevelopmental process move from lower to higher centers of brain. Neuroprotection during emerging phase of psychotic disorder can delay the onset. Neurochemical studies shows that SSRIs atypical antipsychotic, anticonvulsants, and lithium has antiapototic properties which modulate the progression This suggests that apoptotic process is the thread that connects apparently different disorder is unitary psychosis.
Conclusion:
Neurobiological model can account for unitary psychosis.
Attention to caregiving consequences has been mainly restricted to bipolar disorder, although studies suggest that relatives of bipolar patients also experience considerable distress.
Aim
The purpose of this study was to explore the lived experiences from family member caregiver with bipolar disorder patient.
Methods
In a qualitative research of phenomenological methodology, the family member's caregivers of bipolar disorder in farshian psychiatric hospital in Hamedan (Iran) were selected by purposive sampling in the year 2010. By reaching data saturation the number of participant was 12. Data were gathered through in-depth interviews and analyzed by “Van manen” method.
Results
Analysis of the interviews revealed six major themes: emotional impact, physical impact, social impact, Financial Impact, Disruption of family functioning and social support needs.
Conclusions
Highlight the need for family-oriented mental health services to be developed and for further research to identify the specific nursing interventions that are effective in helping to sustain family caregiving.
Many time people get addicted to a drug like opiods when prescribed for some medical purpose. Neurobiological models of addiction has proposed cellular adaptation as mechanism of drug addiction. Excessive release of dopamine in NA due to drug intake produces euphoric sensation leading to pathological learning. Repeated use of drug increase glutametergic drive from prefrontal to NA cause compulsive seeking of drug in drug addicts. Is it possible to prevent medically induced addiction.
Method
Pub med search was made by using key words, addiction model, dopamine, glutamate, anticraving medicine, oxidative stress.
Results
Different antiglutametergic medication like ketamine, mementine, accomprosate modulate glutamatic excitation to prevent addiction. Natural medicine like N acetyle cystine and oxytocin have protective role . Typical antipsychotic can block surge of dopamine in NA.
Discussion
When addictive drug has to be used inevitably for medical purpose it should be combined with other drugs to prevent development of addiction. First euphoria related to dopamine release in NA can be blocked by use of low dose typical antipsychotic or dopamine partial antagonist . NMDA is molecular target of various addictive drugs. Memtentine, ketamine or accomprosate can minimize effects of glutametergic plasticity. N accetyle cystine can restore glutamatergic pathway by its system of cystine- glutamate antiporter. It is source of glutathione largest anti oxidant system of body. Intranasal oxytocin can prevent addiction through its action on stress, learning, memory and intimacy. Intranasal oxytocin can be delivered directly to the brain.
Conclusion
Different strategies can be used to prevent medically induced addiction.
In the present study, an effective secondary selection of transgressive variants from a homozygous population of Pusa Sugandh 3 (PS3) has led to the development of basmati variant SKUA 494. SKUA 494 exhibited a grain yield (7.9 t/ha) with superiority of 21.5% over its progenitor (6.5 t/ha). Besides, the genotype revealed an earliness of about 13 and 15 days for flowering and maturity, respectively. Hulling, milling and head rice recovery traits of SKUA 494 were comparatively better over the controls PS3 and Pusa Basmati 1509. No significant differences in the cooking quality were observed in SKUA 494 over its parental line. Quality traits of SKUA 494 revealed an intermediate score for alkali spreading value, besides similar values for gel consistency and amylose content in comparison to PS3. On the basis of stability variables, stability index and overall mean for most of the traits, SKUA 494 depicted stable performance across the locations and over the years. Molecular analysis based on simple sequence repeat markers revealed polymorphism at locus flanking the quantitative trait loci for days to heading (Hd6) between SKUA 494 and its parent (PS3). Based on overall superiority in the performance and adaptability of SKUA 494, the variety has been recommended to farmers for general cultivation under temperate ecology.
The advancement of human retinal pigment epithelial cell (hRPE) replacement therapy is partly dependent on optimization of cell culture, cell preservation, and storage medium. This study was undertaken to search for a suitable storage temperature and storage medium for hRPE. hRPE monolayer sheets were cultured under standard conditions at 37°C and then randomized for storage at six temperatures (4, 16, 20, 24, 28, and 37°C) for 7 days. After revealing a suitable storage temperature, hRPE sheets were subsequently stored with and without the silk protein sericin added to the storage medium. Live/dead assay, light microscopy, pH, and phenotypic expression of various proteins were used to assess cell cultures stored at different temperatures. After 7 days of storage, hRPE morphology was best preserved at 4°C. Addition of sericin to the storage medium maintained the characteristic morphology of the preserved cells, and improved pigmentation and levels of pigmentation-related proteins in the cultured hRPE sheets following a 7-day storage period at 4°C.
B-cell non-Hodgkin lymphoma (B-cell NHL) is the second commonest malignancy in the stomach. We determined the distribution of Helicobacter pylori outer membrane protein Q (HopQ) allelic type, cytotoxin-associated gene (cag)-pathogenicity activity island (cag-PAI) and vacuolation activating cytotoxin A (vacA) genes, respectively, in patients with B-cell NHL. We also compared them with their distribution in non-ulcer dyspepsia (NUD). H. pylori was cultured from gastric biopsy tissue obtained at endoscopy. Polymerase chain reaction was performed. Of 170 patients enrolled, 114 (63%) had NUD and 56 (37%) had B-cell NHL. HopQ type 1 was positive in 66 (58%) in NUD compared with 46 (82%) (P = 0·002) in B-cell NHL; HopQ type 2 was positive in 93 (82%) with NUD compared with 56 (100%) (P < 0·001) in B-cell NHL. Multiple HopQ types were present in 46 (40%) in NUD compared with 46 (82%) (P < 0·001) in B-cell NHL. CagA was positive in 48 (42%) in NUD vs. 50 (89%) (P < 0·001) in B-cell NHL; cagT was positive in 35 (31%) in NUD vs. 45 (80%) (P < 0·001) in B-cell NHL; left end of the cagA gene (LEC)1 was positive in 23 (20%) in NUD vs. 43 (77%) (P < 0·001) in B-cell NHL. VacAs1am1 positive in B-cell NHL in 48 (86%) (P < 0·001) vs. 50 (44%) in NUD, while s1am2 was positive in 20 (17%) in NUD vs. 46 (82%) (P < 0·001) in B-cell NHL. H. pylori strains with multiple HopQ allelic types, truncated cag-PAI evidenced by expression of cagA, cagT and cag LEC with virulent vacAs1 alleles are associated with B-cell NHL development.